Virtual program control temperature test instrument

Abstract

The invention discloses a virtual program control temperature test instrument and belongs to the technical field of mechanical and electrical product test. The instrument mainly comprises an upper computer, a power supply module, a temperature sensor, a signal conditioning module, a singlechip and a serial port server, wherein the temperature sensor consists of a 24-path K-type thermal electric couple; a signal acquired by the thermal electric couple is amplified by the signal conditioning module and is subjected to cold junction compensation and A / D conversion to generate a temperature digital signal to be stored in the internal memory of the singlechip; a temperature value is transmitted to the serial port server through a serial port of the singlechip; and the serial port server converts a serial port signal into an Ethernet signal so as to realize remote communication with the upper computer. The software of the upper computer automatically judges whether temperature rise is accordant with a standard and realizes setting of a temperature acquisition frequency, the definition of a temperature channel, real-time display of a temperature test value, drawing of a temperature curve and automatic generation of a test report. The test instrument has a simple test form, can improve the intellectuality, accuracy and reliability of a system and meets the requirements of current networked tests.

Description

technical field [0001] The invention relates to a temperature tester, in particular to a program-controlled temperature tester for temperature rise test in the safety test of electromechanical products such as household appliances, hand-held electric tools and lamps. Background technique [0002] The safety, environmental protection and quality of electromechanical products are more and more valued by users. The task of electrical safety testing for electromechanical products is getting heavier and heavier, and the testing standards and requirements are getting higher and higher. National standards such as GB4706.1-2005 "Safety of Household and Similar Electrical Appliances Part One: General Requirements" in Chapter 11 stipulate that the temperature rise should be continuously monitored during the test of household appliances, and the temperature rise must not exceed the specified value. The temperature rise test of mechanical and electrical products is to simulate the maxi...

AI Technical Summary

Problems solved by technology

Existing temperature testing instruments can only passively detect and record the test temperature mechanically. There is no national standard for temperature rise limits embedded in electromechanical products, and they cannot automatically generate temperature rise test reports suitable for electromechanical products such as home appliances, electric tools, and lamps.

[0004] The DR130-00-21-1R type temperature tester manufactured by Japan YOKOGAWA company commonly used in electrical safety testing laboratories has the disadvantages of single function, lack of good communication interface, and can not formulate test procedures according to test requirements for automatic judgment of test results. Alarm, automatic generation of experimental reports with well-defined channels; more incompatible with today's trend of instrument networking

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