Abstract: An apparatus for measuring parameter values from an electrical input signal comprises a signal sampling device operable to sample said input signal and to produce a corresponding output comprising a measured parameter value; a signal level detector configured to detect changes in the level of the input signal by more than a threshold amount; and a controller co-operable with the signal sampling device and the signal level detector. The controller is configured to operate the signal sampling device to sample the input signal in response to the signal level detector detecting a change in the input signal level by more than the threshold amount.

Abstract: A method and system for managing tire pressure in a vehicle are disclosed. The system is a tire pressure monitoring system associated with the tire pressure sensors. The method includes the general steps of informing the operator that air pressure in a tire is below a desired level, causing the sensor to undertake a rapid sampling of pressure of the tire during an interim state while the vehicle is being driven, advising the operator to manually add pressure to the tire in discrete increments of, for example, between 5 and 10 seconds, causing the sensor to undertake a rapid sampling of tire pressure while air is being manually added to the tire, and causing the sensor to transmit tire air pressure data until the operator stops adding air. The method may also include the step of providing the operator with feedback when a predetermined tire air pressure is reached.

Abstract: A tire pressure monitoring system includes a plurality of tire pressure monitoring sensors including low frequency wireless receivers and high frequency wireless transmitters. The system further includes a plurality of low frequency transmitters each being disposed proximate one of the plurality of tire pressure monitoring sensors. The system further includes a control module in communication with the plurality of tire pressure monitoring sensors through the plurality of low frequency transmitters. In a first phase of operation the control module causes the low frequency transmitters to transmit low frequency wireless signals to the tire pressure monitoring sensors causing the tire pressure monitoring sensors to transmit data to the control module at a rate. In a second phase or operation the tire pressure monitoring sensors transmit data to the control module at a second rate.

Abstract: The present invention provides an onboard system for determining vehicle emissions. The emissions are determined in real-time and may be transmitted to a remote terminal for storage and/or analysis. Data is supplied solely to an emissions unit from a vehicle diagnostic system: the vehicle diagnostic system receives vehicle data from vehicle systems and sub-systems.

Abstract: In a wheel position identifying device for a vehicle, transmitters are disposed in wheels, respectively. Each of the transmitters has a dual axis acceleration sensor and a control unit. The dual axis acceleration sensor detects a normal-direction acceleration and a tangential-direction acceleration of the wheel associated with the transmitter. The control unit determines whether the wheel associated with the transmitter is a right wheel or a left wheel based on a sign of a product of a time differential value of the normal-direction acceleration and the tangential-direction acceleration, and stores data regarding a determination result in a frame. A receiver receives the frame from each transmitter and identifies a position of the transmitter based on the data stored in the frame. The wheel position identifying device is for example employed to a tire pressure detecting apparatus.

Abstract: A ground contact pressure controller may be configured to automatically manage tire inflation pressure in a pneumatic compactor machine. The controller may determine a target tire inflation pressure for the machine according to the parameters of, inter alia, machine weight, number of tires on the machine, ground contact area of the tires, compaction surface type, and ambient temperature. The machine may include a compressor and vent unit coupled to the pneumatic tires, and the compressor and vent unit may be configured to adjust the tire pressure of the pneumatic tires according to a target tire pressure. A unified pressure subsystem coupled to the compressor and vent unit may be configured to measure pressure of the tires, and to adjust tire pressure to the target pressure.

Abstract: The invention includes using multiple wireless vehicular sensor nodes to wirelessly receive multiple, time-interleaved vehicular waveform reports from the nodes. Each vehicular waveform report approximates a raw vehicular sensor waveform observed by a magnetic sensor at the node based upon the presence of a vehicle. The vehicular waveform reports are products of this wirelessly receiving process. The invention includes apparatus supporting the above outlined process. The vehicular waveform reports may be time synchronized.

Abstract: A tire air pressure detecting device includes an air pressure detecting unit, a transmitting unit, a running state detecting unit, an air pressure change rate detecting section and a frequency adjustment section. The frequency adjustment section is configured to adjust a transmitting frequency at which the detected value of the tire air pressure detected by the air pressure detecting unit is externally transmitted by the transmitting unit according to the running state detected by the running state detecting unit and the air pressure change rate detected by the air pressure change rate detecting section. The frequency adjustment section is further configured to variably set a threshold value for switching the transmitting frequency from low frequency to high frequency according to the running state and the air pressure change rate.

Abstract: A SAW filter includes at least four electrically interconnected DMS tracks. First and second tracks of the at least four DMS tracks are connected in parallel in opposite directions to form a first filter element. The first and second tracks have two resonant frequencies that are offset from one another from track to track within the first filter element such that they define a common passband by virtue of a lower-frequency resonance of the first track being in phase at the same frequency as a higher-frequency resonance of the second track. Third and fourth tracks of the at least four DMS tracks can be connected in a similar fashion to form a second filter element. The passbands of the first and second filter elements are offset from one another and each comprise one of two channels of a two-channel filter.

Abstract: A method, system and computer program product for detecting a tire pressure deviation in a tire of a vehicle by determining tire pressure indicating data indicative of a tire pressure condition of the tire and determining tire pressure deviation data indicative of a tire pressure deviation in the tire.

Abstract: A collision avoidance method for transmitting data from multiple wireless tire condition sensors on a vehicle is executed by each wireless tire condition sensor having a unique ID and multiple different wake-up times. After the sensor is operated to sense data, the method has steps of reading the ID and computing a determination value with the ID and a variable, selecting one of the wake-up times according to the determination result, and after the selected wake-up time expires, transmitting the sensed data. As the selected wake-up times of the sensors differ from one another, data collision at the receiving end arising from data transmission from the sensors can be avoided. Additionally, besides the wake-up time, a time gap between data transmitted twice consecutively from each sensor can be employed to achieve data collision avoidance.

Abstract: A handheld, portable device is used to facilitate inspection of vehicles, by wirelessly conveying an activation command to the vehicle to actuate a vehicle component, to facilitate inspection of the actuated component. The activation command is received by a wireless data link in the vehicle, which is electrically/logically coupled to either a switch that controls actuation of the component, an actuator configured to manipulate the component, and/or a vehicle processor configured to selectively convey an actuation command to the component. In some embodiments, in response to conveying the activation command, the handheld device enables the user to input a condition of the actuated component, which is added to an inspection record. In some embodiments, the handheld device sends a query to the vehicle, which results in the handheld device providing an indication to a user of each component in the vehicle that is capable of remote actuation.

Abstract: A tire pressure monitoring apparatus (10) includes a pressure transducer (14) and a valve stem (12). A support bracket (50) connects the valve stem (12) to the pressure transducer (14) and facilitates pivotal movement between the valve stem and the pressure transducer. The support bracket (50) includes a valve stem biasing member (80) that exerts a spring bias on the valve stem (12) to help maintain a selected angular position of the valve stem relative to the pressure transducer (14).

Abstract: A tire condition monitoring system stores information representing a number of dual wheels having two tires arranged closely adjacent to each other on, for example, a commercial vehicle. The system measures internal air temperatures of the tires on all of the wheels, and stores temperatures measured when a system reset is executed as reference temperatures. The system determines calculated values based on the temperatures measured for each tire until a measured temperature exceeds the corresponding reference temperature by 20 degrees Celsius or more. The system arranges the calculated values in an order and determines that a number of the calculated values high in the order are calculated values of temperatures of tires mounted on the inside wheel. The number of calculated values corresponding to a dual wheel is equivalent to the number of dual wheels. Thus, the system determines which tires are mounted on an inside wheel.

Abstract: Frames of data are received. Each frame includes at least a sensor identifier and a changeable data field and is sent from one of a plurality of sensors. Each of the plurality of sensors is associated with a respective one of a plurality of sensor identifiers. The changeable data field includes, in some of the frames, data representing a sensed condition and, in others of the frames, counter data. The counter data is analyzed to determine whether any of the sensor identifiers can be associated with one of a plurality of sensor locations.

Abstract: Allocates identifiers of units of a tire pressure monitoring system to the positions of ABS-sensors which are each assigned to the wheels of the vehicle. The identifiers are contained in signals that are emitted by the units. Each unit, which is called a wheel electronic, has a pressure sensor, which is sensitive to the tire pressure of the wheel, a motion sensor, which provides information on the rotation speed of the wheel, a memory with the individual identifier of the wheel stored therein, and a transmitter, which transmits signals only containing information on the rotation speed of the respective wheel, to a receiver. An evaluation device receives the transmitted identifier and compares the information on the rotation speed of the wheel transmitted along with the identifier, with rotation speed information, which were acquired by the ABS sensors for the same time span and transferred to the evaluation device.

Abstract: In a method for wireless communication between a control unit and an electronic housing mounted on a vehicle member, information for the electronic housing is transmitted in the form either of continuous signals, or of signals modulated by encoded data. Each electronic housing includes a switching strategy between reception modes for the two types of signals, including establishing a permanent standby state for continuous signal reception and, upon the reception of a continuous signal, controlling a switchover to the modulated-signal reception mode for a time T, after which the electronic housing processes the data of the potential detected modulated signal and, if no such modulated signal is detected, processes the continuous signal at the origin of the switchover. Furthermore, after the time T, a reverse switchover control to the permanent standby state is delivered.

Abstract: A tire condition monitoring system includes a transmission device, a receiving device, and a monitoring section. The transmitting device includes a sensor which detects, as tire information, a condition of gas in the tire cavity area surrounded with a tire and a rim, a transmitter which wirelessly transmits the tire information, and a housing having a wall surrounding the sensor and the transmitter and separating an inner space from the tire cavity area. The housing wall defines a communicating through hole which enables communication between the cavity area and inner space and a selectively non-communicating through hole having a member which is movable between blocking and unblocking positions to impede and enable communication, respectively, between the cavity area and inner space. The receiving device receives the tire information, and the monitoring section determines whether a tire anomaly exists based on the tire information and provides a result.

Abstract: A tire position determination system includes a tire pressure detector attached to each tire to generate a tire pressure signal. An acceleration detector generates gravitational information for each tire pressure detector. A receiver arranged in a vehicle body receives the tire pressure signal from each tire pressure detector. An axle rotation amount detector detects an axle rotation amount of an axle corresponding to each tire and generates pulses indicative of the detected axle rotation amount. An automatic locator determines the position of each tire based on the gravitational force and the pulses. A pulse combination determination unit determines whether or not a combination of the pulses from the axle rotation amount detectors is appropriate. A pulse acquisition timing setting unit sets an acquisition timing of the pulse signal for the automatic locator based on the determination of the pulse combination determination unit.

Abstract: Provided are a tire pressure detecting module that simply identifies a position of a tire detecting module to automatically assign the position of the tire detecting module and a tire pressure detecting system including the same. The tire pressure detecting module includes a phase angle sensor detecting a phase angle of a wheel, a pressure detecting sensor detecting a pressure and temperature of a tire, a pressure detecting control unit extracting a phase angle number matching a phase angle of the wheel that is detected by the phase angle sensor among a plurality of phase angle numbers that are given by uniformly dividing the wheel, and a pressure detecting transmission part transmitting tire information including a pressure value or temperature value detected by the pressure detecting sensor at the retransmission interval several times.

Abstract: Provided are a tire pressure detecting module that simply identifies a position of a tire detecting module to automatically assign the position of the tire detecting module and a tire pressure detecting system including the same. The tire pressure detecting module includes a phase angle sensor detecting a phase angle of a wheel, a pressure detecting sensor detecting a pressure and temperature of a tire, a pressure detecting control unit selecting one transmission pattern of a plurality of transmission patterns, in which phase angle numbers are arranged, to calculate a standby time taken until a phase angle number of the selected transmission pattern and the detected phase angle of the wheel match each other, and a pressure detecting transmission part transmitting tire information including the pressure or temperature detected according to the selected transmission pattern, transmission pattern information that is information with respect to the selected transmission pattern, and the standby time.

Abstract: Method for allocating identification codes which are contained in signals transmitted by components of a tire pressure monitoring system, said components being attached to wheels of the vehicle, to the wheel positions. A plurality of sensors to the tire pressure, to the rolling direction of the wheel, to the shocks, as well as a memory for the identification code, and a transmitter which supplies signals with the identification code, the rolling direction and the occurrence of a shock on a wheel to a receiver which, based on the supplied rolling direction information, distinguishes identification codes pertaining to wheels on the left-hand or right-hand side of the vehicle from shocks which occur on the left-hand or right-hand side of the vehicle, measures the time interval elapsing between shock signals on one side of the vehicle, multiplies this time interval by the velocity of the vehicle measured within the same time interval.

Abstract: A system is provided for generating data packets of a message according to a first protocol, then analyzing the message according to a second protocol. The system determines if the message provides a correct checksum according to the second protocol. If the message provides the correct checksum according to the second protocol, the system alters the message and transmits the message according to the first protocol.

Abstract: The present invention relates to a system and a method for sensing positions of tires. The system for sensing the positions of the tires comprises: a plurality of transmitters having identification numbers (ID) which are attached to inner parts of a plurality of tires to detect the states of the tires; an external device which records position information of the transmitters located in a vehicle in each of the transmitters; and a receiver for receiving the IDs and the state information and the position information of the tires.

Abstract: A multiple radio data service antenna module integrated in a rear view mirror being exposed towards a windscreen in an activated state enhances quality of reception of multiple radio data services and a display unit being integrated in a rear view mirror surface displaying information received by said antenna module informs a driver about relevant data of said data service without distracting the driver.

Abstract: A method of programming a tire pressure monitoring device includes the step of forming a physical interface between a tire pressure monitoring device and a programming device. The programming device includes a first memory including a plurality of selectable programs that provide instructions defining a communication protocol for communication between a tire pressure monitoring device and a receiver. The method further includes the step of selecting through a user interface of the programming device a desired one of the plurality of selectable programs and loading the selected one of the plurality of selectable programs from the first memory device of the programming device to a second memory device disposed within the tire pressure monitoring device.

Abstract: In a system for monitoring the pressure of the tires of a vehicle, it is proposed to compensate the raw data of the parameters of the tires only if the comparison of the successive raw data of at least one reference parameter exhibits a deviation, in absolute value, greater than a determined threshold of variation. In a TPMS monitoring system, each wheel unit includes sensors for measuring the parameters of pressure, temperature and acceleration, and elements of storage and autonomous power supply, in conjunction with a processor. The raw data provided by the sensors are stored, compensated and transmitted as finalized data by a radiofrequency emission circuit to a central unit. It is proposed that the wheel unit also includes, in a processing module, comparison elements, external to the processor, for comparing between successive raw data of one and the same parameter that are provided by the measurement sensors.

Abstract: A tire pressure adjustment method and system is provided. The method includes receiving from a plurality of sensors in a vehicle, tread depth data associated with tread depths at multiple points on a tire tread comprised by a tire on the vehicle. The tread depth data is analyzed. A tire pressure value for an internal portion of the tire is determined based on results of the analysis. The tire pressure value is associated with modifying a group of tread depths during operation of the vehicle. In response, a command signal is generated. The command signal is configured to command a tire pressure modification device to adjust a current tire pressure value of the internal portion of the tire to the determined tire pressure value. The command signal is transmitted to the tire pressure modification device resulting in the current tire pressure value being adjusted to determined tire pressure value.

Abstract: The invention relates to a method for monitoring the load of vehicle tires which are each contacting a pavement with a circumferential section during travel, by means of monitoring devices (4) which are mounted to the tire (1) and contain a transmitter and a generator which is driven by the flexion of the tire (1), said flexion occurring during vehicle operation, wherein the generator generates a first voltage pulse each time it reaches the beginning of the circumferential section of the tire (1), which is contacting the pavement, and generates a second voltage pulse each time it reaches the end of the circumferential section of the tire (1), which is contacting the pavement, the time intervals (t1) between first and second voltage pulses are measured, the time intervals (t1) or a value calculated therefrom are/is compared with a reference value, and a warning signal is generated if a difference detected in this comparison exceeds a predefined value.

Abstract: A self-powered tire pressure sensor device. The sensor device includes a power circuit, an air pressure measurement sensor, a signal circuit and a wireless transmission circuit. The power circuit converts mechanical acceleration experienced by the device into electrical potential using an electromechanical transducer. Mechanical acceleration due to collisions between the mobile sensor device and the wall of the tire while the tire is in motion cause the transducer to emit a small electrical charge. An electrical potential storage element in the power circuit accumulates and stores the charge as electrical potential. Alternatively the power circuit receives and converts electromagnetic energy into electrical potential. The electrical potential powers an air pressure measurement sensor within the tire. A signal circuit and wireless transmission circuit transmit the measurement to a chassis-mounted receiver, which makes the tire pressure measurement available to systems remote from the tire.

Abstract: Tire pressure information is sensed. The sensed tire pressure information is stored in a transmission buffer. A control program is executed to transmit the tire pressure information from the transmission buffer to an external receiver device according to each of a plurality of communications formats incorporated into the control program and not according to a manufacturers' code.

Abstract: A method of detecting a decrease in tire air pressure includes calculating tire rotation information obtained from the wheel tires; computing a first determination value showing a difference between the sums of the wheel rotation information of pairs of wheel tires on two diagonal lines and a second determination value showing a difference between the sum of the wheel rotation information of right wheel tires and the sum of the wheel rotation information of left wheel tires; assuming the computed first and second determination values as points on orthogonal coordinates; determining position of tire(s) having a decreased pressure based on the argument of the points on the polar coordinates; and comparing the moving radii of the points on the polar coordinates with a predetermined threshold value to thereby determine a decrease in tire air pressure.

Abstract: A tire information monitoring system includes a transmitting device, provided in a tire cavity region, for transmitting tire information, a receiving device, provided in a vehicle body, that receives the tire information from the transmitting device and determines a tire condition based on the tire information, and a setting device that transmits identification information and a criterion to the receiving device so as to set the identification information of the transmitting device and the criterion of the tire information used for determining the tire condition by the receiving device. The setting device can be a mobile telecommunication terminal device for setting the identification information and the criterion in the receiving device using a program downloaded via an external network.

Abstract: Improved vehicle inspection systems and inspection methods for use in measuring predetermined conditions of vehicle equipment are disclosed. Hand-held tire pressure monitoring system (TPMS) tools for communicating and transferring data between the tool and an onboard vehicle TPMS is in electronic communication with at least one measurement accessory device for measuring a preselected vehicle equipment condition are disclosed herein. The measurement accessory device may be a tread depth measuring device and a brake pad thickness measuring device.

Abstract: A communication method transmits a detection signal including a valve ID, which is a fixed data string, and detection information, which is a variable data string, performs error detection on the received detection signal, and uses the detection information when there is no error. The communication method generates third data corresponding to the detection information in accordance with a predetermined rule to increase redundancy of the detection information, generates computed data by performing an exclusive disjunction logic operation with the valve ID and data including the detection information and the third data, transmits the detection signal that includes the computed data, receives the detection signal, restores the detection information and the third data by performing an exclusive disjunction logical operation with the received detection signal and the computed data, and determines whether the detection information conforms to the third data.

Abstract: A tire inflation pressure obtaining unit obtains tire inflation pressure. An inflation pressure storing unit stores a tire inflation pressure after start of travel of a vehicle as an after-travel inflation pressure. A pressure reduction determining unit determines reduction in the tire inflation pressure based on the tire inflation pressure obtained. A reference pressure setting unit sets larger one of the after-travel inflation pressure and a predetermined lowest reference pressure as a reference pressure of tire inflation pressure determination when reduction in the tire inflation pressure is determined, and sets the lowest reference pressure as a reference pressure of tire inflation pressure determination when reduction in the tire inflation pressure is not determined. An alarm unit generates an alarm when the tire inflation pressure becomes below an alarm pressure threshold which is determined from the reference pressure.

Abstract: A method for operating a tire pressure monitoring system of a motor vehicle, including a direct or indirect sensing device for sensing and outputting the pressure which is present in the motor vehicle tires. In order to assist the driver of a vehicle when inflating a tire, a loudspeaker, which is present on the motor vehicle, is used to transmit the current pressure value (pact) to the vehicle driver by a voice message. In this context, the voice message includes the current pressure values (pact) in increments of 0.1 bar. The loudspeakers, which are present, are the loudspeakers of the vehicle's own multimedia system or a loudspeaker of the vehicle's own alarm system.

Abstract: In a tire pressure detecting apparatus, a receiver stores wheel positions detected by a previous wheel position detection as previous wheel positions. When an ignition switch is turned on and until wheel positions are newly specified by a current wheel position detection, the receiver permits an indicator to indicate tire pressure of each of wheels based on the previous wheel positions to notify a driver of the tire pressure from an earlier timing. The receiver permits the indication of the tire pressure based on the previous wheel positions only when a difference of the tire pressure between the wheels is equal to or less than a threshold. If there is a possibility that tire pressure of one of the wheels is insufficient, the receiver prevents the indicator to indicate the tire pressure until a current wheel position detection finishes.

Abstract: A tire pressure monitoring system (TPMS) is provided. The TPMS includes: a plurality of sensors which output sensing signals, the plurality of sensors including a printable pressure sensor which senses an air pressure of a tire, and a temperature sensor which senses an air temperature inside the tire; a signal processor which is configured to process the sensing signals output by the plurality of sensors; a wireless power receiver which is configured to receive energy from a power source and output power; and a rechargeable battery which is configured to be charged by the power output by the wireless receiver and supply power to the plurality of sensors to sense the air pressure of the tire and the air temperature inside the tire.

Abstract: A tire measurement system includes a computer with various memory/media elements for storing raw and transformed tire measurement data (e.g., a data set of measured radial or lateral run-out values) as well as software in the form of computer-executable instructions, which are executed by a processor to filter selected run-out values within the obtained data set that spike above adjacent measurements, identify selected ones of the filtered run-out values that lie on a convex hull surrounding the entire set of values, and perform interpolation of the identified selected ones of the run-out values that lie on the convex hull to obtain a final data set of filtered run-out measurements. Similar steps can be performed on an inverted data set to better detect sidewall deformation features such as sidewall depressions.

Abstract: Embodiments relate to tire localization in tire pressure monitoring systems (TPMS). In embodiments, a TPMS includes a wheel unit and a control unit. Each wheel unit collects acceleration data and transmits that data to the control unit for processing. The control unit processes the data and, using additional data received from another vehicle system, for example an antilock braking system (ABS) or electronic stability control (ESC) system, correlates the data in order to localize each wheel unit to a particular wheel of the vehicle. Advantages include increased processing power at the control unit as compared to the wheel unit.

Abstract: A programming system for a tire pressure monitoring device includes a programming device capable of communicating which of a plurality of communication protocols is to be utilized by the transmitter/receiver of a tire pressure monitoring device. The programming device including a user interface actuateable for communicating which of a plurality of communication protocols is to be utilized by the transmitter/receiver of the tire pressure monitoring device.

Abstract: The tire condition of each tire of a vehicle is detected, which information is transmitted by means of electromagnetic waves from the tire condition acquisition devices to a monitoring device that receives the electromagnetic waves transmitted from tire condition acquisition devices via a receiving antenna, which monitoring device contains means for displaying the electric field intensity of the electromagnetic waves transmitted from the tire condition acquisition devices. Thus, the electric field intensity at a mounting position can easily be determined when mounting the receiving antenna, enabling easy discovery of the optimal location for mounting the receiving antenna.

Abstract: A pump system for inflating a tire of a motorized vehicle, comprises a pump unit. The pump unit has an outlet connectable to an inlet of the tire, for providing a fluid to the inside of the tire. A communication interface is communicatively connectable to a tire pressure monitoring system, TPMS, in the vehicle, for receiving from the TPMS data representing information for controlling the providing of fluid to the tire. A pump controller is connected to the pump unit and to the communication interface and can control the pump unit based on at least the information.

Abstract: Provided are a tire pressure monitoring device, an information transmitting method thereof, and an integrated receiver system. A tire pressure monitoring device according to an aspect of the present invention includes a first sensing unit sensing a pressure of a tire, a second sensing unit detecting whether a vehicle is driving by sensing at least one of acceleration, motion, and shock, and a calculation unit transmitting, to an integrated system of the vehicle, pressure information of the tire at a first data transfer rate corresponding to a data transfer rate of a body control module or a smart key system when the second sensing unit detects that the vehicle is not driving.

Abstract: The present invention is related to a tire pressure display device and its detection method. The tire pressure display device includes a main module, multiple tire pressure detection modules and a vehicle audio module, wherein the main module includes a CPU and a receiver. By the composition of the above elements and the detection method, the tire pressure display device may actively report the location and tire pressure of tires during pumping up, synchronously execute broadcasting with image and voice, and directly correct errors and detect if the tire pressure detection module is break down for warning.

Abstract: In telematics device mounted to a vehicle, an auxiliary processor detects an interrupt from an accelerometer and forwards the interrupt to a main processor—the interrupt wakes up the processor from a sleep mode. The main processor may then compare vehicle voltage and/or a value for a speed parameter to predetermined criteria to determine whether the interrupt was a false positive or if the accelerometer missed a detection of a user cranking up the vehicle. The main processor may also enter a conditional state if monitored information meets a minimum threshold. During the conditional state, the processor may operate according to rules for a current operational state and also according to rules for a changed state. The threshold for deeming a changed operational state is higher than for entering a conditional state to evaluate whether a change of operational state (i.e., on to off, or off to on) occurred.

Abstract: A device for measuring the tire pressure in a pneumatic tire of a vehicle, having an electronic system housing which has an electronic system for measuring values, acted on by a tire valve, for the tire pressure, wherein the electronic system for measuring values is assigned a receiver arranged outside the pneumatic tire, and wherein the electronic system housing is arranged in the region of the rim well of a rim for the pneumatic tire and is indirectly or directly connected to the tire valve, wherein at least one spring element which is operatively connected to the rim well is provided on the electronic system housing.

Abstract: A blank tire pressure monitoring device includes a housing having an air valve at one end and connection terminals at an opposite end, a circuit board mounted in the housing and carrying a pressure sensor, a temperature sensor, an acceleration sensor, an analog-digital converter electrically connected with the pressure sensor, the temperature sensor and the acceleration sensor, a general purpose I/O terminal unit electrically connected with the connection terminals of the housing; an embedded microcontroller module electrically connected with the general purpose I/O terminal unit and the analog-digital converter and having built therein a flash memory, a microcontroller core and a special-function register controller, a LF receiver electrically connected to the embedded microcontroller module, and a transmitter electrically connected to the embedded microcontroller module; and a method is still also disclosed for setting up a blank tire pressure monitoring device.

Abstract: A tire pressure monitoring apparatus includes a plurality of transceivers, a receiver and a warning device. Each transceiver is mounted on a respective wheel having a tire in a vehicle. The receiver is mounted on a body of the vehicle. The warning device receives a warning signal transmitted from the receiver. Each transceiver includes a sensing unit, a first control unit and a transmitting unit. The receiver includes a receiving unit and a second control unit. Each transceiver or the receiver includes a determination unit, which determines whether the tire pressure increases while the vehicle is parked. When the determination unit determines that the tire pressure is increased while the vehicle is parked, the second control unit calculates the selected threshold value, and stores the selected threshold value.