Abstract: A method for processing inflation defects of a tyre of a vehicle is disclosed, the tyre being equipped with sensors for measuring the pressure and the temperature of the internal cavity of said tyre. The pressure and the temperature of the internal cavity of the tyre are measured periodically and, as soon as an inflation defect of a tyre is detected, an alert is signalled to the driver of the vehicle, in which there is also transmitted to the driver of the vehicle a maximum speed setpoint: which, when the measured inflation pressure of the tyre is greater than or equal to a first inflation pressure threshold value p1, is a first maximum speed setpoint value V1; and which, when the measured inflation pressure of the tyre is less than said first pressure threshold value p1 and greater than or equal to a second pressure threshold value p2, decreases as a function of said measured inflation pressure of the tyre.

Abstract: Embodiments disclosed herein relate to a thin, light, and portable system for measuring one or more parameters of a contact patch between a tire and a surface. The system may be configured with an array of sensors capable of being removable fixed to the surface. The array of sensors may measure the one or more parameters of the contact patch between the tire and the surface. Moreover, the system may include a scanner configured to interpret the measurements from the array of sensors as data and store the data.

Abstract: A tire device has a tire side device and a vehicle body side system, and determines a road surface condition and detects a tire wear state. The tire side device includes a vibration detection unit that outputs a detection signal according to a magnitude of a tire vibration, a control unit extracts a feature amount during one rotation of the tire, and a first data communication unit that transmits a road surface data including a feature amount. The vehicle body side system includes a second data communication unit that receives road surface data, a road surface determination part that determines a road surface condition based on the road surface data, an integral calculation part that calculates an integral value of the feature amount in a specific frequency band included in the road surface data, and a wear determination part that detects the tire wear state from the integral value.

Abstract: A tread portion of a pneumatic tire includes a columnar wear measurement magnet that has magnetic flux density or magnetic field strength formed thereby decreased due to wear thereof along with wear of tread rubber of the tread portion and a columnar reference magnet provided at a position where the columnar reference magnet is not worn with the wear of the tread rubber. The wear measurement magnet and the reference magnet extend from a tread surface side toward a tire cavity region of the pneumatic tire, and an end of the reference magnet on the tread surface side is located farther from a tread surface where the tread portion contacts the ground than an end of the wear measurement magnet on the tread surface side.

Abstract: A vehicle determines that it is within a predefined proximity of a location for which an alternative tire pressure different from a current vehicle tire pressure has been defined. The vehicle changes a tire pressure monitoring system setting to utilize the alternative tire pressure as an alert threshold, responsive to determining that the vehicle is within the predefined proximity. Also, the vehicle determines that the vehicle has traveled more than a predefined distance from the location and, responsive to the vehicle having traveled more than a predefined distance, reverts the tire pressure monitoring system to use base settings for alert thresholds.

Abstract: The disclosure relates to the field of automobile detection apparatus technologies, and provides a tire pressure sensor including: a sensor body, a valve assembly connected to the sensor body, a locking member, a resilient member, and a button; wherein a fixture block assembly is disposed at a connecting end of the valve assembly; the locking member is disposed within the sensor body, and the locking member limiting the fixture block assembly when the connecting end is inserted into the sensor body; the button is disposed within the sensor body, and when the button receives an external force, the button transmits an external force to the fixture block assembly, so that the locking member relieves limiting of the fixture block assembly. An entire process of installation and disassembly of the tire pressure sensor becomes simpler and faster.

Abstract: A device for measuring a pressure in a pressurized vessel with an at least partially flexible wall. The device includes a sensor head and a device for pressing a contact surface of the sensor head against the wall. The sensor head has a detection region of the contact surface and a support edge that surrounds the detection region and is arranged in a continuation of the contact surface. A detection device is provided in the detection region for detecting a measured value for a force or pressure. An evaluation unit evaluates a progression of the measured value during a movement of the sensor head relative to the wall. A contact measured value p* is determined from a portion of the progression indicating that the pressure acting on the detection region is at least substantially equal to the pressure acting on the support edge. A pressure value is assigned to the contact measured value p*.

Abstract: A tire includes an RFID locator. The tire includes a pair of bead areas and a ground-contacting tread disposed radially outwardly of the pair of bead areas. Each sidewall of a pair of sidewalls extends from a respective bead area to the tread. A carcass extends toroidally between each of the bead areas radially inwardly of the tread and an innerliner is formed on an inside surface of the carcass. An RFID tag is attached to the tire at an area of a selected one of the sidewalls through interior sidewall attachment. A locator indicia is integrated into an axial outer surface of the selected sidewall at a locator area.

Abstract: A pressure measuring device for a bicycle has a housing that includes a pressure chamber. The pressure chamber has a valve disposed in a first opening and a second opening into or out of a tire assembly volume of a tire assembly. A sense element is in pressure communication with the pressure chamber along a flow path between the first and second openings.

Abstract: An electronic wheel unit for a wheel-monitoring system of a vehicle is disposed on one of the wheels and is configured to detect at least one wheel operating parameter of the wheel and to transmit wheel operating data telegrams according to a data transmission protocol wirelessly to a control device, configured to receive and evaluate the wheel operating data telegrams. The electronic control unit defines the data transmission protocol, which is to be used to transmit the wheel operating data telegrams, by using specification data which have previously been transmitted from the control device to the electronic wheel unit. Therefore, automatic adaptation of the data transmission protocol to the respective control device or the respective vehicle can advantageously take place. A control device for such a wheel monitoring system and a system and a method for monitoring wheels are also provided.

Abstract: The method for assembling a set of construction elements (1) comprises at least the following steps: a) assembling two complementary external faces of two construction elements (1) by adhesion, b) continuing the assembly carried out in step a) by adhering other faces of the elements (1) to complementary external faces of other construction elements (1) until a predefined portion of a building or engineered structure is obtained, c) adhering sheets (15, 16), so-called cladding sheets, made of a wood-based material to at least a portion of the coplanar faces of the elements (1) assembled in the preceding steps, d) repeating steps a) to c) until the part is obtained. The invention also relates to a building made with at least three elements assembled according to the method of the invention.

Abstract: A pump system includes a pneumatic pump, a hose, a nozzle that can attach to a tire of a vehicle, and a processing device. The processing device receives a target tire pressure for the tire, receives a current tire pressure of the tire, and controls the operation of the pneumatic pump according to the target tire pressure and the current tire pressure. A method includes receiving a target tire pressure for a tire of a vehicle, receiving a current tire pressure of the tire, and controlling operation of a pneumatic pump according to the target tire pressure and the current tire pressure.

Abstract: A system and method for issuing a tire pressure deviation in a vehicle's tire is described. The system may include a calculation unit adapted to calculate temporally successive output signals indicative of a tire pressure condition in the vehicle's tire on the basis of temporally successive vehicle's signals. The system may also include a calibration unit adapted to determine a calibration value on the basis of a number of temporally successive output signals from the calculation unit. The system may also include a detection unit configured to detect a tire pressure deviation in the vehicle's tire on the basis of further temporally successive output signals from the calculation unit and the calibration value from the calibration unit, after determination of the calibration value by the calibration unit.

Abstract: Method and apparatus are disclosed for tire pressure monitoring for vehicle park-assist. An example vehicle includes tires, pressure sensors, and a controller. The controller is to identify a target position within a parking spot for park-assist, determine a tire index based on tire pressure measurements, and identify whether the tire index is within a low range, a caution range, or a normal operating range. The controller also is to adjust, responsive to the tire index being within the caution range, the target position to facilitate access to one of the tires having low pressure.

Abstract: An assembly determines operating parameters of a tire. The assembly includes a tripod sensor mounted within an inner cavity of the tire underneath a crown portion and an innerliner on which the tripod sensor is mounted. The tripod sensor includes a tri-axial accelerometer for creating a circumferential signal for determining slip ratio, a lateral signal for determining a slip angle, and a radial signal for determining load on the tire.

Abstract: A pressure deviation between a setpoint tire pressure and an actual tire pressure for a tire of a vehicle is determined by the following steps: Ascertaining a wheel load for the tire. Ascertaining a dynamic tire radius of the tire. Determining the pressure deviation as a function of the wheel load and the dynamic tire radius.

Abstract: The present disclosure relates to methods, system and devices for monitoring tire pressure data of vehicle wheel units. In an example a method of monitoring and expressing tire pressure data information is provided. The method includes selecting a first threshold pressure value for a tire to establish a first pressure range and a second pressure range. The method also includes monitoring pressure of the tire and generating signals indicative of tire pressure. The method further includes that in the first pressure range the signals are converted to digital signals according to a first conversion variable and in the second pressure range the signals are converted according to a second conversion variable.

Abstract: A lamp, for a vehicle, that includes at least one light source configured to generate light; a transparent display configured to allow at least a portion of the light to pass through the transparent display; and a processor configured to control the transparent display to display, on a projection surface using the light, information related to the vehicle or driving conditions for the vehicle is disclosed.

Abstract: A rotary joint assembly including a rotating portion. The rotating portion includes an annular body and a pair of annular sealing members. Each annular sealing member of the pair of annular sealing members is attached to a side of the annular body. An air passageway is formed in the annular body. The rotary joint assembly also includes a non-rotating portion. The non-rotating portion has a non-rotating portion air passageway formed therein. The non-rotating portion air passageway is in fluid communication with the air passageway formed in the annular body. A pair of annular air seal members are provided between the rotating portion and the non-rotating portion. Each annular air seal member of the pair of annular air seal members contacts a sealing surface of one of the annular seal members to provide a seal around an interface between the air passageway formed in the annular body and the non-rotating portion air passageway.

Abstract: Disclosed are a method and a system for monitoring the pressure of a tire. The system measures frequencies of multiple tires mounted on the vehicle, sets a first average frequency for a normal pressure state and a second average frequency for determination of a low pressure state, wherein the first average frequency is calculated by accumulating the measured frequencies for each speed interval in a stop mode and the second average frequency is calculated by accumulating the measured frequencies for each speed interval in a driving mode, calculates low-pressure probabilities for each speed interval of the tire by using the second frequency, a predetermined low-pressure reference frequency, and a predetermined frequency determination interval for determining low-pressure, and determines whether each tire is at low pressure state by aggregating the low-pressure probabilities for each speed interval of the tire.

Abstract: A rotary feedthrough for a compressed air supply system is provided between a stator and a rotor rotating relative to this stator. A compressed air channel disposed in the stator is connected to a compressed air line and leads into an annular chamber formed in the rotor, from which at least one working channel leading to a consumer proceeds. The stator is connected in the region of the rotary feedthrough to a control line. A moment of friction occurring in the region of the rotary feedthrough resulting in premature wear is reduced by providing a switchable non-return valve in the annular chamber. Blocking elements which extend within the annular chamber concentrically to the rotational axis of the rotor are moveable into an open position by an actuating element, which is displaced from the stator in the direction of the blocking elements.

Abstract: A method, non-transitory computer readable medium, and apparatus for detecting defective brakes are disclosed. For example, the method detects that a wheel of a vehicle is in a position to be read by an infrared (IR) thermometer, signals the IR thermometer to take a temperature measurement of a brake of the wheel, receives the temperature measurement of the brake and determines that a defective brake condition exists when the temperature measurement of the brake is outside a temperature range.

Abstract: A method for checking the correct positioning of a vehicle on a measuring station for vehicle measurement includes: a) taking images of at least two tires of the vehicle; b) identifying features, in the images taken, which describe at least one area of the respectively recorded tire; c) fitting a mathematical model to the identified features; d) determining the extent of the flattening of each tire from the fitted mathematical model; e) comparing the flattening of the at least two tires.

Abstract: A tire state judging device includes wheel speed sensors configured to detect rotational speeds of tires, and a control unit configured to perform frequency-analysis of detection results of the wheel speed sensors to detect a frequency of a valley part of an output, and calculate an air pressure of the tire from the detected frequency of the valley part. According to this, the tire state judging device has an effect that this can detect a state of the tire irrespective of a state of a road surface.

Abstract: A method for controlling the tire pressure in multiple axle vehicles whose wheels are equipped with pneumatic tires and speed sensors that supply an evaluation unit with signals indicative of the speed of the respective wheel, by (a) determining simultaneously the speed of a right-hand wheel and a left hand wheel mounted on a common axle; (b) determining the deviation between the two speeds; (c) reducing the deviation in speed by a correction value representative, during a cornering motion, of that component of the deviation n speed between the right-hand wheel and the left-hand wheel which is due to the cornering motion: and (d) indicating the corrected deviation in speed, or of a signal derived therefrom, at least when the correct deviation in speed exceeds a given threshold value.

Abstract: A sensor array (13) for checking the pressure of a vehicle tire while being moved over the array comprises two sets (14) and (19) of aligned, facing sensor members. The first set (14) of sensor members is formed by slits (15) cut into a plate of metal to form first fingers (16) connected in cantilevered fashion to a first base portion (17), which extend in the direction of intended vehicle movement to free ends (18). The second set (19) of sensor members is formed by slits (20) cut into a plate of metal to form second fingers (21) connected in cantilevered fashion to a second base portion (22), which extend in the reverse of the direction of intended vehicle movement to free ends (23). The fingers of the two sets are aligned and the free ends (18) and (23) are closely adjacent. Each finger is provided with a load sensing system (28, 29) which provides an indication of the load on the finger as the tire moves over the finger.

Abstract: A receiver device is tuned to monitor for first transmissions at a first time according to a first criterion and to monitor for second transmissions at a second time according to a second criterion. When the receiver device initially recognizes one of the first transmissions being transmitted according to the first criterion or the second transmissions being transmitted according to the second criterion, the recognized transmission is verified as being valid. When the transmission is recognized as valid, a transmission apparatus is activated to transmit an indication to a receiver so that a localization process can be executed.

Abstract: A vehicle service or inspection system including a load roller for applying a radial load to a vehicle wheel assembly consisting of a tire mounted to a rim, with at least one sensor for acquiring measurements of acoustical energy generated by the wheel assembly during loaded rotational movement. The vehicle service or inspection system is configured with a programmed processor to evaluate the acquired measurements to provide a measure of tire road noise, identification of tire defects, and/or identification of sources of noise, vibrations, or acoustical energy on the tire surface such as tire flat spots, cupping, bubbles, embedded foreign objects, or other defects. The processor is further configured with software instructions to utilize the acquired measurements to provide a consumer with a figure of merit associated with the acoustics of the tire undergoing testing.

Abstract: Electronic components, conductors, and the like that the form a detecting-and-transceiving circuit are positioned in a space inside a casing other than a space E that is enclosed by an imaginary surface that forms a predetermined angle ? with respect to a coil axis x toward the outside from a position on the edge of an aperture surface of the end part of a coil-shaped antenna 450 in the direction of the coil axis x. The angle ? is, e.g., 5° or more and is preferably 90°. Minute electronic components and conductors may be positioned within the space E if doing so does not dramatically change the magnetic current of the antenna 450.

Abstract: Measurement equipment for measuring the inflation pressure of a tire of a vehicle wheel 1. The equipment comprises a body 16 defining an internal volume, a communication orifice 19 for putting the inside volume of the body 16 into communication with an inflation chamber situated between a rim 2 and a tire of the wheel and containing an inflation gas and an indicator member 25 slidably mounted in the body 16 so as to define a gastight separation between a first chamber 26 containing a given quantity of a reference gas and a second chamber 27 into which the communication orifice 19 leads. As a result, the indicator member 25 is subjected to opposing pressures that exist in each of the chambers. A position-identification device 30 is operative to identify the position of the indicator member in the body.

Abstract: A wrong operation detection device is disclosed for monitoring whether or not a calibration start for determining an initial deflation index is issued in a tire pressure unadjusted state after a deflation warning in a tire pressure monitoring system for detection of deflation of a tire. The device includes comparison means for comparing a first deflation index serving as a deflation index at any time point in a period from issue of the deflation warning to vehicle stop after the issue of the warning, with a second deflation index serving as a deflation index obtained after the calibration start; detection means for detection of wrong operation of a reset button based on a comparison result by the comparison means; and warning means for issuing a warning when the detection means detects the wrong operation.

Abstract: The present invention relates detecting the conditions of tires for a vehicle. In the present invention, signals are received from a plurality of wheel speed sensors, a reverse gear sensor, and a brake sensor. Errors of the wheel speed sensors are estimated using the received signals, a signal having a corrected error is obtained using the estimated errors, linear interpolation and band-pass filtering processing are performed on the signal, a tire resonant frequency is estimated using the processed signal, tire pressure is estimated based on the estimated resonant frequency, and whether or not to generate an alarm is determined based on the calculated tire pressure. Accordingly, there is an advantage in that whether or not pressure within a tire of a vehicle is abnormal can be determined in a cheap calculation device for a short time using a conventional wheel speed sensor.

Abstract: A wheel position detector for a vehicle includes: a transmitter at each wheel having a first control portion for transmitting a frame with specific identification information; and a receiver at a vehicle body receiving the frame from one wheel and having a second control portion for performing wheel position detection; and a wheel speed sensor for detecting a tooth of a gear. The second control portion: acquires gear information indicating a tooth position; sets a variation allowance based on the tooth position; registers the one wheel with using the variation allowance; and performs the wheel position detection by excluding an identified wheel as the one wheel from a candidate of another wheel mounting the transmitter that transmits another frame when the second control portion identifies the one wheel.

Abstract: A touch-control tire pressure sensor device includes a housing holding an air nozzle at one side thereof, a circuit board accommodated in the housing and carrying a processor and memory unit having electrically coupled thereto a pressure sensor unit, a temperature sensor unit, an acceleration sensor unit, a LF transmission interface and a RF transmission interface for transmitting a sensed signal to an on-vehicle main unit, a battery pack providing the circuit board with the necessary working voltage, and a conducting plate having one end connected to the touch sensor IC and an opposite end kept in contact with the air nozzle.

Abstract: Apparatus (4; 5) for checking the inflation pressure of a tire (3) of a vehicle (2) while the tire is being moved over the apparatus in a direction of travel (A). The apparatus comprises a base (7), a platform (8) which is mounted over the base, a first load sensor system (9) arranged between the platform and the base, and a second load sensor system (12) mounted on an upper surface of the platform and comprising a linear array of high resolution sensors (13, 25) extending across the platform. A data processing unit (6) processes data obtained by sampling the outputs of the first and second sensor system and provides an indication of the inflation pressure of the tire. The data obtained by sampling the output of the first sensor system may be used to determine the total load borne by the platform, and/or the direction of travel of the tire over the platform, and/or the speed of travel of the tire over the platform and/or the tracking angle of the vehicle tire.

Abstract: A method for testing a punctured tyre's resistance to a loss in pressure includes: creating a plurality of punctures in a wall of the tyre by inserting a plurality of puncturing objects through the wall; running the tyre with the puncturing objects in the wall thereof over a given distance with a regulated inflation pressure; stopping the running of the tyre; and determining, for each puncture, a pressure loss resistance index based on an estimate of a leak rate of the puncture.

Abstract: A TPMS setting tool includes a housing carrying a display unit and an input device on the outside and a circuit board and a power supply device on the inside, the power supply device and the circuit board being electrically coupled together to provide the TPMS setting tool with the necessary working power supply. The housing has a receptacle provided at one side thereof and a connection port with multiple pins mounted inside the receptacle for the connection of a TPMS, enabling the desired communication protocol and ID code to be written into the inserted TPMS.

Abstract: A system for monitoring a fill level of a plurality of tires of a vehicle includes a situation detecting unit set up for detecting a situation in which adaptation of a fill level of at least one of the tires of the vehicle is expected. The system further includes a fill level adaptation assistant set up for autonomously assisting a user of the vehicle during the adaptation of the fill level of the at least one tire when the situation is detected.

Abstract: Provided is a method for testing a tire. The method may comprise performing a first stopping distance test on a tire of a first specification at a first inflation pressure and gathering data about the first stopping distance test. The method may further comprise performing a second stopping distance test on a tire of the first specification at a second inflation pressure and gathering data about the second stopping distance test. The method may further comprise performing a first traction test on a tire of the first specification at either the first inflation pressure or the second inflation pressure and gathering data about the first traction test.

Abstract: The present disclosure relate to an indirect tire pressure monitoring system (TPMS). In some embodiments, the indirect TPMS has magnetic field sensor that detects a modulated magnetic field indicative of one or more resonance parameters of an automobile tire. The magnetic field sensor generates a modulated sensor signal based upon the modulated magnetic field. An analog-to-digital converter (ADC) converts the modulated sensor signal to a digital sensor signal, which is provided to a digital signal processing unit that perform analysis of the digital sensor signal to determine the one or more resonance parameters. A communication interface transmit data corresponding to the one or more resonance parameters to an electronic control unit (ECU).

Abstract: An apparatus for measuring the pressure of a tire on a moving vehicle, comprising measuring device (14, 18, 24) which is provided on or inside a floor or ground so as to interact with the tire and which generates an electronically analyzable measurement signal in reaction to the tire driving over the measuring device, and analysis unit (22, 40) which output a tire pressure signal corresponding to the tire pressure in reaction to the measurement signal. The measuring device includes an optical unit (18) for acquiring a tire width as the width of a tire footprint forming when the tire drives over the floor/ground. The analysis unit is designed to determine a footprint length from a series of tire width data generated by the optical unit and/or from a pattern of a pressure measurement signal generated by the measuring device and to determine the tire pressure from a footprint area calculated as a function of the length and width of the footprint and from a force applied to the footprint area by the tire.

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 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 monitoring device includes a housing mounted within a cavity of a tire/wheel assembly. A sensor within the housing senses a condition within the cavity via an open passage in the housing. A hollow first tube extends away from the housing coaxial to an axis of the open passage. The first tube has an internal bore aligned with the open passage, and includes: a first tubular portion having a first cross sectional width; and a second tubular portion having a second cross sectional width smaller than the first cross sectional width. The second tubular portion further has a free end opening positioned in the cavity above a level of a liquid present in the cavity when the tire monitoring device is positioned at a lowest point in the cavity. The opening has a cross sectional width sized to prevent entrance of the liquid past the opening.

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: A system includes a camera, a weigh-in-motion scale, and a processor. The camera is configured to capture one or more images of a vehicle as the vehicle goes over the weigh-in-motion scale. The weigh-in-motion scale is configured to generate one or more weight measurements of the vehicle as the vehicle goes over the weigh-in-motion scale. The processor is operatively coupled to the camera and the weigh-in-motion scale. The processor is configured to determine an acceleration of at least a portion of the vehicle based at least in part on the one or more images of the vehicle. The processor is also configured to adjust at least one of the one or more weight measurements based on the acceleration.

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: 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: 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: Described is a device (51) for monitoring the state of inflation of vehicle wheel tires, the wheels comprising a rim (100) and a respective tire (101) delimiting a hollow space (103) inside the wheel from the outside environment (104).