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

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 ...

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

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