CN214066147U - Multifunctional detection tool for vehicle instrument - Google Patents
Multifunctional detection tool for vehicle instrument Download PDFInfo
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- CN214066147U CN214066147U CN202023235221.7U CN202023235221U CN214066147U CN 214066147 U CN214066147 U CN 214066147U CN 202023235221 U CN202023235221 U CN 202023235221U CN 214066147 U CN214066147 U CN 214066147U
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Abstract
The utility model relates to a multifunctional detection tool for vehicle instruments, which comprises a processor, a DA voltage converter, a PWM wave generator, a digital potentiometer, a voltage-type instrument detection interface, a frequency-type instrument detection interface and a resistance-type instrument detection interface, wherein the processor is respectively connected with the voltage-type instrument detection interface, the frequency-type instrument detection interface and the resistance-type instrument detection interface through the DA voltage converter, the PWM wave generator and the digital potentiometer, the DA voltage converter outputs continuous adjustable voltage, the PWM wave generator outputs continuous adjustable frequency PWM wave, the digital potentiometer outputs continuous adjustable resistance value, therefore, the multifunctional detection tool can output voltage-type detection signals, frequency-type detection signals and resistance-type physical signals, can realize the detection of various instruments, improve the utilization rate of the tool, has higher universality and economy, and can reduce the workload of the production of the detection tool, moreover, the detection efficiency can be improved to a certain extent.
Description
Technical Field
The utility model relates to a vehicle instrument's multi-functional detection frock.
Background
In vehicles, such as tracked vehicles, various detection instruments, such as fuel gauges, pressure gauges, etc., are generally arranged, and sensor signal inputs of the detection instruments are mostly resistance, frequency and voltage type physical signals. During production and debugging, specific detection tools need to be manufactured for instruments of different models, and the general method is to select several key instrument indicating points such as (0, 1/4, 1/2, 3/4 and 1) of measuring range, and the tools are provided with 5 buttons to output physical quantity signals of the 5 positions respectively, and then judge the instrument adjustment result by judging whether the instrument indicates the corresponding position or not.
The current detection mode has a plurality of defects, wherein the key points are as follows: (1) one type of instrument needs to correspond to one tool, and different types of instruments cannot be used universally due to different output physical signals, so that multiple tools need to be arranged, the tools are numerous in types, and the input cost is high; (2) the existing detection tool can only output detection signals of a plurality of key positions, is insufficient in detection, cannot realize detection verification of continuously-converted signals, and causes insufficient detection.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vehicle instrument's multi-functional detection frock for solve the more single technical problem of function of current detection frock.
The utility model provides a multi-functional detection frock of vehicle instrument, includes treater, DA voltage converter, PWM ripples generator, digital potentiometer, voltage type instrument detection interface, frequency type instrument detection interface and resistance type instrument detection interface, the first signal output part of treater connects DA voltage converter's signal input part, the second signal output part of treater connects PWM ripples generator's signal input part, the third signal output part of treater connects digital potentiometer's signal input part, DA voltage converter's analog quantity output part is connected voltage type instrument detection interface, PWM ripples generator's PWM ripples output part is connected frequency type instrument detection interface, digital potentiometer's resistance value output part is connected resistance type instrument detection interface.
Further, the multifunctional detection tool further comprises a conversion interface, and the voltage type instrument detection interface, the frequency type instrument detection interface and the resistance type instrument detection interface are connected with the conversion interface.
Further, the multifunctional detection tool further comprises a human-computer interaction device, and the human-computer interaction device is connected with the human-computer interaction end of the processor.
Further, the multifunctional detection tool further comprises a power supply, and the power supply is connected with a power end of the processor.
Further, the processor is a single chip microcomputer.
The technical effects of the utility model include: can export continuous adjustable voltage through DA voltage converter, can export the PWM ripples of continuous adjustable frequency through PWM ripples generator, digital potentiometer can export continuous adjustable resistance value, consequently, this multi-functional detection frock can export voltage type detected signal, frequency type detected signal and resistance type physical signal, can realize the detection of polymorphic type instrument, improve the utilization ratio of frock, commonality and economic nature are higher, can reduce the work load that detects the frock production, moreover, can promote detection efficiency to a certain extent.
Drawings
Fig. 1 is the utility model provides a multifunctional detection frock's of vehicle instrument structure chart.
Detailed Description
The embodiment provides a multi-functional frock that detects of vehicle instrument, including treater, DA voltage converter, PWM wave generator, digital potentiometer, voltage type instrument detection interface, frequency type instrument detection interface and resistance type instrument detection interface.
In this embodiment, the processor is a single chip microcomputer (the single chip microcomputer may be an AT89CXX series chip of Atmel having a 51-structure, or an AVR single chip microcomputer), and as another embodiment, the processor may also be a processing chip such as a DSP.
The DA voltage converter may be a conventional circuit or device that converts a digital quantity to an analog quantity.
The PWM wave generator is used to generate PWM waves, and may be a conventional PWM wave generating circuit or device. It should be understood that the frequency of the PWM wave output by the PWM wave generator is adjustable and can be adjusted under the control of the single chip microcomputer, or the PWM wave generator is provided with a frequency adjusting circuit.
The Digital Potentiometer (also called Digital programmable resistor) is a new type of CMOS Digital and analog mixed signal processing integrated circuit which replaces the traditional mechanical Potentiometer (analog Potentiometer). The digital potentiometer is controlled by a digital input and generates an analog output. The tap current maximum can range from a few hundred microamperes to a few milliamperes depending on the digital potentiometer. The digital potentiometer adjusts the resistance value in a numerical control mode.
The voltage type instrument detection interface, the frequency type instrument detection interface and the resistance type instrument detection interface can be conventional detection interfaces and are used for being connected with corresponding types of instruments to be detected.
As shown in fig. 1, a first signal output end of the single chip microcomputer is connected with a signal input end of the DA voltage converter, a second signal output end of the single chip microcomputer is connected with a signal input end of the PWM wave generator, a third signal output end of the single chip microcomputer is connected with a signal input end of the digital potentiometer, an analog output end of the DA voltage converter is connected with the voltage type instrument detection interface, a PWM wave output end of the PWM wave generator is connected with the frequency type instrument detection interface, and a resistance value output end of the digital potentiometer is connected with the resistance type instrument detection interface.
Therefore, the singlechip is taken as a core, the DA voltage converter can output voltage in a continuous adjustable range, the PWM wave generator can output PWM waves in a continuous adjustable frequency range, and the digital potentiometer can output resistance values in the continuous adjustable range. It should be understood that the adjustable ranges of all three devices can control the range of the measuring range of the output signal according to the technical parameter program of the actual meter to be detected.
In this embodiment, the multifunctional detection tool further comprises a conversion interface, and the voltage type instrument detection interface, the frequency type instrument detection interface and the resistance type instrument detection interface are connected with the conversion interface. Then, regardless of the type of the meter to be detected, the meter to be detected is connected with the conversion interface, and then a DA voltage converter, a PWM wave generator or a digital potentiometer is selected for detection.
In this embodiment, the multifunctional detection tool further comprises a human-computer interaction device, and the human-computer interaction device is connected with the human-computer interaction end of the single chip microcomputer. The human-computer interaction device can be a touch screen or a combination of a display screen and a keyboard. The human-computer interaction device can display related data, parameters of the instrument to be detected can be solidified in the storage space of the single chip microcomputer, the type of the instrument to be detected is selected through a touch screen or a key during use, the single chip microcomputer automatically loads corresponding instrument parameters, and a corresponding interface can be determined according to the detection type.
In this embodiment, multi-functional detection frock still includes power supply, and power supply is connected with the power end of singlechip, and power supply can be conventional DC power supply, satisfies the power supply of multi-functional detection frock.
The instrument to be detected is connected with the conversion interface, then the DA voltage converter, the PWM wave generator or the digital potentiometer is selected, the DA voltage converter, the PWM wave generator or the digital potentiometer is controlled by the single chip microcomputer to output corresponding detection signals, and the instrument to be detected is detected. Such as: if the instrument to be detected is a voltmeter, the DA voltage converter is selected, and the single chip microcomputer controls the DA voltage converter to output a voltage signal so as to detect the voltmeter.
In addition, the working mode of the multifunctional detection tool can be manual test and automatic detection, the manual test can manually output the related data of the instrument to be detected, and whether the indication position of the instrument to be detected is correct is checked; the automatic detection can dynamically and continuously output detection signals, and an inspector only needs to observe whether the signals displayed on the instrument to be detected and the tool are consistent to judge and evaluate the indication correctness of the instrument to be detected.
Claims (5)
1. The utility model provides a multi-functional detection frock of vehicle instrument, its characterized in that, includes treater, DA voltage converter, PWM wave generator, digital potentiometer, voltage type instrument detection interface, frequency type instrument detection interface and resistance type instrument detection interface, the first signal output part of treater connects DA voltage converter's signal input part, the second signal output part of treater connects PWM wave generator's signal input part, the third signal output part of treater connects digital potentiometer's signal input part, DA voltage converter's analog quantity output part connects voltage type instrument detection interface, PWM wave generator's PWM ripples output part is connected frequency type instrument detection interface, digital potentiometer's resistance value output part is connected resistance type instrument detection interface.
2. The multifunctional detection tool for the vehicle instrument according to claim 1, further comprising a conversion interface, wherein the voltage type instrument detection interface, the frequency type instrument detection interface and the resistance type instrument detection interface are connected with the conversion interface.
3. The multifunctional detection tool for the vehicle instrument according to claim 1, further comprising a human-computer interaction device, wherein the human-computer interaction device is connected with the human-computer interaction end of the processor.
4. The multifunctional detection tool for the vehicle instrument according to claim 1, further comprising a power supply connected to a power end of the processor.
5. The multifunctional vehicle instrument detection tool according to claim 1, wherein the processor is a single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023235221.7U CN214066147U (en) | 2020-12-29 | 2020-12-29 | Multifunctional detection tool for vehicle instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023235221.7U CN214066147U (en) | 2020-12-29 | 2020-12-29 | Multifunctional detection tool for vehicle instrument |
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| Publication Number | Publication Date |
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| CN214066147U true CN214066147U (en) | 2021-08-27 |
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| CN202023235221.7U Active CN214066147U (en) | 2020-12-29 | 2020-12-29 | Multifunctional detection tool for vehicle instrument |
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| CN (1) | CN214066147U (en) |
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2020
- 2020-12-29 CN CN202023235221.7U patent/CN214066147U/en active Active
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