TWM553809U - Simulation and calibration device for velocimeter - Google Patents

Description

Speedometer analog calibration device

This creation is related to a speedometer calibration device, and more particularly, a speedometer analog calibration device that uses an analog signal to correct a speedometer to be corrected.

In recent years, advances in science and technology have continually introduced new ways to test the speed of vehicles and objects. From the traditional induction coils to the current speed measurement of laser radars, the time of passing the object through the speed tester is used as the basis for calculating the speed of the object.

Please refer to FIG. 1 , which is a schematic diagram of a conventional speed tester. As shown, the speed tester has a first test unit 11 , a second test unit 12 , and a processing module 13 . When the object passes the first test In the unit 11, the first test unit 11 generates a first time t1 when an object passes, and when the object passes the second test unit 12, a second time t2 is generated, and the processing module 13 respectively At a time t1 and a second time t2, the distance from the first test unit 11 and the second test unit 12 is calculated to obtain a velocity value of the object.

The most commonly used speed tester calibration test method is to measure through two test units through two test units using a known fixed speed object. The speed is compared, so the required labor and cost are relatively increased.

In view of the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide a speedometer analog calibration device, which obtains the speed standard value by comparing the speed standard value generated by the analog electrical signal with the indication value of the speed measuring instrument to be tested. And the difference between the indication value of the device, and the difference between the measured speedometer and the measured data is used to achieve the purpose of the calibration speedometer.

In order to achieve the above purpose, the present invention provides a speedometer analog calibration device, which uses an analog method to perform speed correction of the speedometer to be corrected, and uses the analog signal generation module to generate a negative pulse electrical signal to respectively drive the first illumination. The unit and the second illuminating unit generate a negative pulse optical signal, and receive the negative pulse optical signal, so that the speed measuring device to be corrected generates a speed indicator, and the transmission ratio is compared to the negative pulse signal. The generated speed standard value and the device indication value are obtained, and the difference between the speed standard value and the instrument value to be corrected is obtained, and the measurement data of the speedometer is corrected by the device difference to achieve the purpose of the calibration speedometer.

11‧‧‧First test unit

12‧‧‧Second test unit

13‧‧‧Processing module

First time t1‧‧‧

T2‧‧‧ second time

21‧‧‧ Analog signal generation module

22‧‧‧Stop speedometer

211‧‧‧Signal generating unit

212‧‧‧First lighting unit

213‧‧‧second lighting unit

Figure 1 is a schematic diagram of a conventional speed tester.

The second picture is a schematic diagram of the simulation correction device of the creation speedometer.

The embodiments of the present invention are described by way of specific examples, and those skilled in the art can understand other advantages and effects of the present invention from the disclosure of the present specification.

Please refer to FIG. 2 , which is a schematic diagram of the analog calibration device of the present speedometer. As shown in the figure, the device includes an analog signal generation module 21 and a speedometer 22 to be corrected. The analog signal generation module 21 has a signal generation. The unit 211, a light emitting diode (LED) or a laser first light emitting unit 212 and a second light emitting unit 213, respectively, generate a negative pulse electrical signal by the signal generating unit 211, and drive the first light emitting unit 212 and The second illumination unit 213 sequentially generates a negative pulse optical signal, and the to-be-corrected tachometer 22 receives and calculates the negative pulse optical signal to obtain a value of the to-be-corrected tachometer 22, and generates a mode by using the analog signal. The group 21 respectively generates a time difference of a negative pulse electrical signal, and the time difference of the negative pulse electrical signal is used to simulate different speed values, thereby obtaining the speed standard value, compared with the speed standard value and the to-be-corrected speedometer 22 The value is obtained, and the difference between the values of the indicator to be corrected is obtained, and the measured data of the to-be-corrected speedometer 22 is corrected by the difference of the device to achieve the purpose of correcting the speedometer.

The above-described embodiments are merely illustrative of the features and functions of the present invention, and are not intended to limit the scope of the technical content of the present invention. Any person skilled in the art can modify and change the above embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of the rights of this creation, It should be listed in the scope of patent application as described later.

21‧‧‧ Analog signal generation module

22‧‧‧Stop speedometer

211‧‧‧Signal generating unit

212‧‧‧First lighting unit

213‧‧‧second lighting unit

Claims (3)

A speedometer analog calibration device is a speed correction method for a speedometer to be corrected by using an analog method. The device includes: an analog signal generation module having a signal generation unit, a first illumination unit, and a first a second light-emitting unit, wherein the signal generating unit generates a negative-pulse electrical signal to drive the first light-emitting unit and the second light-emitting unit to sequentially generate a negative-pulse optical signal; and the to-be-corrected speedometer is received, Calculating the negative pulse optical signal to obtain an indication value of the to-be-corrected speed measuring instrument, and generating a speed standard value by using the time difference generated by the analog signal generating module to generate a negative pulse electrical signal respectively, comparing the speed standard value and the to-be-corrected The value of the speed measuring instrument is obtained, and the difference between the indication values of the speed measuring instrument to be corrected is obtained, and the measuring data of the speed measuring instrument to be corrected is corrected by using the difference of the speed to achieve the purpose of correcting the speed measuring instrument. The speedometer analog calibration device of claim 1, wherein the light emitting unit is a light emitting diode (LED) or a laser. The speedometer analog calibration device of claim 1, wherein the time difference for generating a negative pulse electrical signal is used to simulate different speed values.