Abstract: A detecting circuit for a number of fans includes a connector module and a controller. The connector module includes a number of connectors. Each connector outputs a first signal or a second signal depending on the connection or non-connection to a fan. The controller receives a speed signal of the fan upon receiving the first signal which indicates a connected state.

Abstract: A fan speed testing system for testing a testing fan includes a testing fan, a collecting module, a processing module, a converting module; and a displaying module. A label is attached to the testing fan and capable of rotating with the testing fan. The collecting module is configured to collect light reflected off of the label as the fan rotates in order to produce a pulse signal. The processing module is configured to adjust the pulse signal to be a standard square wave. The converting module is configured to obtain a fan speed data of the testing fan according to conversion times between high levels and low levels of the standard square wave. The displaying module is configured to display the fan speed data.

Abstract: The invention relates to an indicating instrument, particularly for a motor vehicle, comprising an approximately circular scale (12) which is placed on a dial (5), provided for a physical quantity, and along which a pointer (10) can be displaced whereby being able to be rotatably driven about an axis of rotation. Additionally provided is a marking that indicates a particular area of the scale (12). The marking is placed on a part (27), which is situated underneath the plane of the dial (5) whereby enabling it to be rotatably driven about the axis or rotation of the pointer (10) into a control position. The dial (5) comprises, along the movement path of the marking a window (13) through which the marking can be viewed from the front of the indicating instrument.

Abstract: A tachyometric display for automotive engines comprising a display head defining a circular display field. The field comprises a plurality of concentric circular bands having a quiescent state in which all of the bands are of the same illumination level and/or color. An engine speed signal is connected through a logic circuit to change the illumination level and/or color of the bands to show speed increases. A conventional needle type speedometer indicator is combined with the display head and suitable indicia are superimposed on the display field.

Abstract: A pointer of a meter such as a speedometer for use in an automobile is so structured that it is observed as if its illuminated length extends upon turning on a key switch and as if its illuminated length is shortened upon turning off the key switch, thereby giving an ornamental effect to the meter. A pointer cover gradually covering or exposing the illuminated pointer may be provided at a vicinity of a zero-scale position. The pointer may be progressively illuminated by plural light sources disposed behind a scale plate by tuning on the light sources one by one. The light sources such as light-emitting diodes may be embedded in the transparent pointer needle. Plural light sources covered by a bimetal cover may be disposed at a foot portion of the pointer needle, and the bimetal cover may be heated to gradually uncover the light sources thereby to progressively illuminate the pointer needle.

Abstract: A tachometer with the variation of the projection light source which could set-up the critical standard speed value to provide optimum shift-shifting time, and record the fastest speed condition happened on racing at least comprising: the meter body, the micro-processor, the functional selection operation device, the memory device as well as the cylinder changeover switch; the character of this invention is to add one light source device on the circuit device inside the meter body, said light source device is comprised of a switch device, an electric-control loop and a RGB illumination device set; it utilizes the way of synchronize-light-mixing with the electric-control-loop to drive the RGB illumination device set, and by means of the program control of the microprocessor, when the rotating speed reaches the setting value, the projection light source with various color could be changed according to the setting.

Abstract: An adjustable gauge mounting cup with interchangeable mounting pedestals that provide a maximum number of mounting locations within a vehicle. The gauge mounting cup allows the operator to easily adjust the viewing angle of the gauge after the cup is mounted in the vehicle. The cup can also have replaceable mounts that have various types of mounting footprints and sizes. The gauge mounting cup mounts on a ball and socket or other adjustable mounting means. This allows the cup to be swiveled on three axes after the base pedestal is mounted and also allows the cup to be moved forward and backward on the pedistal mount.

Abstract: A pointer of a meter such as a speedometer for use in an automobile is so structured that it is observed as if its illuminated length extends upon turning on a key switch and as if its illuminated length is shortened upon turning off the key switch, thereby giving an ornamental effect to the meter. A pointer cover gradually covering or exposing the illuminated pointer may be provided at a vicinity of a zero-scale position. The pointer may be progressively illuminated by plural light sources disposed behind a scale plate by tuning on the light sources one by one. The light sources such as light-emitting diodes may be embedded in the transparent pointer needle. Plural light sources covered by a bimetal cover may be disposed at a foot portion of the pointer needle, and the bimetal cover may be heated to gradually uncover the light sources thereby to progressively illuminate the pointer needle.

Abstract: Method and apparatus for detecting mechanical vibrations and outputting a signal in response thereto. An accelerometer package having integral display and control functions is suitable for mounting upon the machinery to be monitored. Display circuitry provides signals to a bar graph display which may be used to monitor machine conditions over a period of time. Control switches may be set which correspond to elements in the bar graph to provide an alert if vibration signals increase in amplitude over a selected trip point. The circuitry is shock mounted within the accelerometer housing. The method provides for outputting a broadband analog accelerometer signal, integrating this signal to produce a velocity signal, integrating and calibrating the velocity signal before application to a display driver, and selecting a trip point at which a digitally compatible output signal is generated.

Abstract: A driving behavior monitoring system mountable within a vehicle and having a board member on which are mounted first and second accelerometer devices for measuring acceleration in mutually orthogonal directions. Each accelerometer device includes an arm member in the form of a generally L-shaped crank or elbow. The crank is pivotable at the elbow joint thereof, and one arm of the crank is provided with a weight at the end thereof with the other arm having the free end thereof attached to one end of a tension spring, the other end of which is fixedly attached to the board member. A pair of electrical switch contacts are positioned in spaced relation on either side of the spring, with each contact being placed at approximately the same distance from the axial centerline of the spring. Movement of the weight translates to deflection of the spring in a direction orthogonal to its axis.

Abstract: Method and apparatus for detecting mechanical vibrations and outputting a signal in response thereto. Art accelerometer package having integral display and control functions is suitable for mounting upon the machinery to be monitored. Display circuitry provides signals to a bar graph display which may be used to monitor machine conditions over a period of time. Control switches may be set which correspond to elements in the bar graph to provide an alert if vibration signals increase in amplitude over a selected trip point. The circuitry is shock mounted within the accelerometer housing. The method provides for outputting a broadband analog accelerometer signal, integrating this signal to produce a velocity signal, integrating and calibrating the velocity signal before application to a display driver, and selecting a trip point at which a digitally compatible output signal is generated.

Abstract: A speedometer capable of providing real-time speed signals, that can be combined with different functional devices and speed control units, to facilitate the automatic recording and controlling of the speed, thereby forming a multifunctional automatic monitoring and controlling device for vehicles. Photoelectric sensors are disposed in the conventional mechanical magnet-type speedometer, and a LED is mounted on the speed indicating needle shaft. The ON and OFF states of the LED can be controlled by a signal from within or from external of the vehicle. The output of the photosensors are connected to a multichannel photoelectric converter.

Abstract: An automotive straight line G-meter utilizes the input from a piezoresistive accelerometer to accurately measure and display both straight line forward and backward as well as lateral or side to side acceleration and deceleration of a vehicle. The automotive straight line G-meter includes solid state circuitry which temperature compensates and amplifies the transducer output before coupling to an analog meter that is calibrated to show the gravity effect of acceleration and deceleration of the vehicle. The G-meter device further includes circuitry for energizing an automotive tachometer that employs a LED (light emitting mode) bar graph to display the revolutions per minute (RPM) of the vehicle engine.

Abstract: An optical part for light transmission comprises a light conductor formed of a core of a transparent material and a clad of a material having a smaller refractive index than that of the core material, and a light emitting and/or receiving element, wherein the light emitting and/or receiving element is integrally combined with the core of the light conductor by a same material as the core material or by a material having a same refractive index as that of the core material and having a greater rigidity than that of the material forming the clad and/or jacket. The optical part can be used in a high temperature environment as well as a room temperature environment without involving any appreciable loss in light transmission.

Abstract: A vacuum fluorescent (VF) display having integral graphic patterns backlit by an alternate light source to produce emissive graphic images in substantially the same plane as the VF graphic patterns. The backlit graphic patterns are defined by patterned openings in the anode insulation layer of a conventional VF display, and color of the backlit graphic images is determined by the color of the alternate source light, independent of the color of the light emitted from the VF phosphor.

Abstract: An automotive instrument having a meter scale plate and an indicator lens which are arranged in a side-by-side fashion on the same display panel. A light-shielding projecting wall is provided on the rear side of the meter plate constituting the display panel, so as to prevent the light illuminating the meter scale plate to leak into the area of the indicator lens. A light-shielding structure is provided on a case of the instrument so as to shield the end of the light-shielding projecting wall, thereby preventing the meter illuminating light from leaking to the area of the indicator lens.

Abstract: An accelerometer comprising a permanent magnet which, when idle, is maintained dynamically balanced by virtue of magnetic fields acting on opposite sides in relation to its poles, and which is designed to travel along a respective guide. The accelerometer has a coil arranged coaxially in relation to the traveling direction of the magnet, and is designed to generate an electric signal, the intensity of which depends on the relative acceleration of the coil in relation to the magnet and in the traveling direction of the same.

Abstract: Engine timing apparatus includes a timing light and a pickup for producing a pickup signal in response to each ignition in a selected cylinder. The operator keys in the desired advance or retard angle in degrees in a range anywhere between +180.degree. and -180.degree.. A program-controlled microcontroller with an internaltimer samples the time period between pickup signals and, using this information and the advance of retard angle, calculates engine rpm and the proper time delay for the flash. The system automatically corrects for system delays to produce extremely accurate timing functions. The system may be used with an inductive pickup for timing gasoline engines or with a luminosity pickup for timing diesel engines. At high rpms the system produces a flash in response to every other pickup signal.

Abstract: A G-force acceleration measuring instrument for use in an aircraft, spacecraft, submarine, or other vehicle, and employing electronic sensing and display transducers for increased reliability, small size, and small mass. The instrument includes a bar graph display, preferably incorporating liquid crystal transducer elements, uses a solid state or limited motion acceleration transducer, and provides graphic and numeric indication of the present G-force value together with numeric indication of historic maximum and minimum G-force values. The instrument also includes gain adjustment arrangements for accommodating different instrument panel slopes mounting in different types of vehicles with different G force capability, and a signal output tap for recording or slave indicating or telemetry or feedback use.

Abstract: The deflection, due to inertia, of the free end of the cantilever rod of fiber optic material is an indication of the acceleration of the supporting structure of the rod. The indication of the deflection of the rod is by detecting light propagating the free end of the rod. Disclosed are fiber optic rod sensing element structures for acceleration indicators, a rate of change of acceleration indicator, a rotation indicator, and a latching acceleration indicator.

Abstract: A digital display type tachometer for an automobile for numerically displaying a rotation speed of the engine comprises a numeric character display device having display sections for 1000's, 100's, 10's and 1's digits, the 1's digit display section being constructed to display always "0", a counter for counting pulses generated in synchronism with the rotations of the engine to produce a BCD signal depending on the rotation speed, and decoding/driver means for decoding the BCD signal into decimal numeric character signals for 1000's, 100's and 10's digits and driving the 1000's, 100's, and 10's digit display sections by these character signals, respectively.

Abstract: This invention relates to a speed indicating apparatus for a vehicle comprising a plurality of indicator lights and a speed counter, each said indicator lights mounted externally on the rear frame of the vehicle being connected to said speed counter by means of electric wires respectively and said speed counter being connected with a speedometer of the vehicle by means of a soft steel shaft which is in turn connected with gears of a speed change gear of the vehicle so as to transmit the rotating speed thereof to said speedometer and speed counter.

Abstract: A speed indicating apparatus for an automobile comprising a plurality of indicator lights showing the travelling speed at all times, a half-circular magnet pivoted on a hand shaft of a speedometer in the automobile, a plurality of contact metal plates connected to a lead wire of each said indicator light separately, and a ground connection circular metal plate connected to said hand shaft of said speedometer; said speed indicating apparatus being capable of giving indications of the travelling speed to other drivers at all times and reminding the driver of his speeding so as to minimize the traffic accidents.

Abstract: A rotation displaying device for displaying the rotating speed of an engine, especially, that of an agricultural machine such as a combine harvester, in colors classified by the low speed, standard speed and high speed. The device comprises a rotary shaft rotating at a speed proportional to the rotating speed of the engine, and a color pattern plate urged in one direction by the centrifugal force produced by the rotation of the rotary shaft. The color pattern plate is provided on its surface with a pattern of three different colors, and the color pattern changing with the successive displacement of the color pattern plate is viewed through a single central displaying opening of a display plate to display the low speed, standard speed and high speed of the engine.

Abstract: A digital speedometer includes analog-to-digital converter means which may be coupled to a speed-indicator of a vehicle-mounted speedometer for converting a position of the speed indicator into a binary number which is displayed, upon being converted into a decimal number, on a display means mounted on the hood of a vehicle.

Abstract: A plurality of luminescent elements, such as light-emitting diodes, incandescent lamps or the like, are located adjacent each other, each connected to the output of a difference amplifier. The respective inputs of the difference amplifier are connected, on the one hand, to a voltage divider to have different reference voltages applied thereto and, on the other, in common to the input voltage to be sampled so that, as the voltage changes between the amplification ranges of the difference amplifiers, the output therefrom will change in accordance with input voltage so that the brightness of the respectively connected luminescent elements will also change, thus providing gradual increase in brightness of any individual element as the voltage changes. The difference amplifiers may be differentially connected operational amplifiers.

Abstract: An apparatus for measuring the velocity of a vehicle traveling between first and second measured points. The apparatus includes a cylindrical housing having an open top for receiving a transparent disk. Indicia representing speed calibrations is circumferentially spaced adjacent an outer perimeter of the disk. A stopwatch is carried in the housing below said disk and has a rotatable hand which rotates at a predetermined rate under the indicia. A lamp is carried below the stopwatch for illuminating the indicia carried on the transparent disk. The stopwatch is started when the vehicle passes a first reference point and stopped when the vehicle passes the second reference point. Thus, when the hand is stopped, such points to the calibrated indicia on said disk indicating the velocity of a vehicle.