Multipath thermistor detection system and detection method
A thermistor and detection system technology, which is used in the measurement of heat, nuclear power generation, measurement devices, etc., can solve the problems of labor-intensive, limited number of thermistors to be tested, and inability to detect thermistors, so as to avoid misjudgment, The effect of saving monitoring manpower and improving reliability
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Embodiment 1
[0063] In the traditional thermistor detection process, it is usually first used by a boiling equipment to boil the thermistor for boiling water for up to 1000h, and then use a multimeter to test the resistance of each boiled thermistor to be measured, the test time reaches 96h, the process requires the detector to monitor the resistance test data all the time, consuming manpower;
[0064] If it is necessary to test the resistance of multiple thermistors to be measured at the same time, in order to ensure that the resistance test data can match the thermistors one by one, it is also necessary to mark each thermistor to be measured separately, and the number of thermistors to be measured by a tester at the same time is limited, and a large number of thermistors cannot be detected, resulting in low thermistor detection efficiency.
[0065] In view of the above problems, the present application embodiment provides a multi-channel thermistor detection system, which can realize the syn...
Embodiment 2
[0077] In practical applications, the PIC microcontroller can be used as the main control chip to control the multiplexed chip for multi-channel thermistor resistance collection, and combined with the boiling experiment module, mode switching module and abnormal indication module to build a multi-channel thermistor detection system to achieve synchronous acquisition of multiple thermistors to be measured, and real-time monitoring of the resistance test process, with the abnormal indication module to timely alarm the unqualified thermistor to be measured.
[0078] The following technical solution in conjunction with the accompanying drawings describes in detail the embodiments of the present application.
[0079] Figure 2 is another structural schematic diagram of the multi-channel thermistor detection system illustrated in the present application embodiment.
[0080] See Figure 2 , a multiplexer thermistor sensing system that includes:
[0081]Multiple resistance acquisition modu...
Embodiment 3
[0103] For the mode switching module in the above embodiment I, the present application embodiment has been designed to complete the switching of the mode of the multiple thermistors to be measured.
[0104] Figure 3 Schematic diagram of the structure of the mode switching module illustrated for an embodiment of the present application.
[0105] See Figure 3 , mode switching module, including: K IC chips, K×P relays and 2× (K×P) test resistors;
[0106] where K is an integer greater than 2 and P is an integer greater than 2.
[0107] In the present embodiment of the application, the IC chip has at least P outputs, wherein the output is connected with a relay, such that the IC chip is controlled by the control module, the control relay is switched from a normally open state to a normally closed state;
[0108] Relay K1 connects two test resistors R 测, and relay K1 has two no-open pins 3, two no-close pins 5, and two common points 4; Among them, the test resistor R 测 One end is con...
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