Method and system for automatically testing resistance value and marking automobile temperature sensor

A temperature sensor and automatic testing technology, applied in thermometer testing/calibration, thermometer, measuring resistance/reactance/impedance, etc., can solve the problems of constant temperature time of the product to be tested, cumbersome testing process, constant water temperature standard cannot be given, etc. , to achieve the effects of improving test efficiency and test reliability, improving resistance test accuracy, and facilitating traceability and research analysis

Inactive Publication Date: 2020-12-25
XIAOGAN HUAGONG GAOLI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This kind of test method relies more on the standard operation of employees. If the employees are slightly negligent, the defective resistance products may flow out. For example, the standard of constant water temperature cannot be given. It is determined by the experience of the employees themselves. The situation of missing or retesting the employees holding the test pens cannot be found at all. , whether the constant temperature time of the product under test is in accordance with the requirements can not be detected
Therefore, the existing technology cannot guarantee the screening of 100% qualified sensors, and the existing testing process is cumbersome and inefficient

Method used

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  • Method and system for automatically testing resistance value and marking automobile temperature sensor
  • Method and system for automatically testing resistance value and marking automobile temperature sensor

Examples

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Embodiment 1

[0032] A method for automatically testing and marking the resistance value of an automobile temperature sensor, characterized in that it includes:

[0033] S100. Load the temperature sensor of the vehicle to be tested on the position fixer in the constant temperature water pool to ensure that the temperature sensor of the vehicle to be tested is fixed.

[0034] In some preferred embodiments, the raw material of the position fixer is epoxy resin, and 7 car temperature sensors to be tested are loaded at a time, and the two metal pins of the car temperature sensor to be tested transmit the signal through a flexible probe. The surface is gold-plated, the contact resistance between the test probe and the product pin of the temperature sensor is less than 10mΩ, and the tail of the test probe is welded with a copper core wire to lead the signal to the terminal of the relay of the control unit. The test software controls the relay "Action" / The "OFF" state adjusts which resistance val...

Embodiment 2

[0047] This embodiment discloses a system for automatically testing and marking the resistance value of an automobile temperature sensor, which is characterized in that it includes: a position fixer, a multimeter, testing software, a cylinder circuit control unit, and a cylinder marking machine; wherein:

[0048] The position fixer is used to fix the temperature sensor of the car to be tested in the constant temperature water pool. The raw material of the position fixer is epoxy resin, and 7 car temperature sensors to be tested are loaded at a time. The two metal pins of the car temperature sensor to be tested transmit the signal through the elastic probe. The surface of the probe is gold-plated. The test probe and The contact impedance of the product pins is less than 10mΩ, and the tail of the test probe is welded with a copper core wire to lead the signal to the relay terminal of the control unit. The resistance value of one. This connection method ensures that the connecti...

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Abstract

The invention provides a method for automatically testing a resistance value and marking an automobile temperature sensor. The method comprises the steps of loading a to-be-tested automobile temperature sensor to a position fixer in a constant-temperature water tank; performing temperature detection on the constant-temperature water tank where the to-be-tested temperature sensor is located, and ifthat the temperature of the constant-temperature water tank meets the temperature stability standard is detected, performing resistance value detection on the to-be-tested automobile temperature sensor; comparing the resistance value measured by the to-be-tested automobile temperature sensor with a preset threshold resistance value range; and if the resistance value of the to-be-tested automobiletemperature sensor is within the preset threshold resistance value range, controlling an air cylinder marking mechanism to mark the current to-be-tested automobile temperature sensor, and marking thecurrent to-be-tested automobile temperature sensor as a qualified product. According to the method, an existing manual test on the automobile temperature sensor is optimized and improved into an automatic test, so that the test efficiency and the test reliability are improved. The whole process of testing the automobile temperature sensor is more visually shown on test software, and test data isautomatically stored locally, so that later tracing and research analysis are facilitated.

Description

technical field [0001] The invention relates to the technical field of temperature sensor resistance measurement, in particular to a method and system for automatically testing and marking the resistance value of an automobile temperature sensor. Background technique [0002] The prior art method for testing automobile temperature sensors is as follows: immerse the sensor to be tested in a constant temperature water tank according to the matrix, then connect the temperature standard sample to a multimeter, manually observe the temperature standard sample and wait for the water temperature to be constant; then wait for the water temperature to stabilize and manually use the timer Timing, wait for the product to be at constant temperature for 2 minutes; then manually hold the two test leads of the multimeter, and perform a single test on the product to be tested in turn. [0003] This kind of test method relies more on the standard operation of employees. If the employees are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K15/00G01R27/02
CPCG01K15/007G01R27/02
Inventor 陈得良
Owner XIAOGAN HUAGONG GAOLI ELECTRONICS
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