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A device and method for continuous power cycle monitoring of thermistor resistance

A technology of thermistor and varistor, applied in the direction of measuring resistance/reactance/impedance, measuring device, measuring electricity, etc., can solve the problem of affecting the accuracy of test results, unable to accurately monitor the resistance value of thermistor, destroying thermistor test Continuity and other issues, to achieve the effect of strong continuity in the test process, simple structure, and improved control.

Active Publication Date: 2018-05-04
XIAOGAN HUAGONG GAOLI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the conventional thermistor resistance test method on the market is mainly to disconnect the thermistor from the circuit and connect it to the multimeter pen for testing, so that the resistance value of the thermistor during the electrical test cannot be accurately monitored. At the same time, it will destroy the continuity of the thermistor test and affect the accuracy of the test results.

Method used

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  • A device and method for continuous power cycle monitoring of thermistor resistance
  • A device and method for continuous power cycle monitoring of thermistor resistance

Examples

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Embodiment 1

[0038] Embodiment 1 provided by the present invention is an embodiment of a device for continuously monitoring the resistance of a thermistor provided by the present invention, such as figure 1 Shown is the functional block diagram of a kind of thermistor resistance continuous electric cycle monitoring device provided by the present invention, by figure 1 It can be seen that the device includes: a central control system, a voltage pulse control array, a test module and a test circuit.

[0039] The test circuit includes a DC power supply and a thermistor array, the thermistor array includes at least two parallel thermistors, and the DC power supply provides DC power to each thermistor.

[0040] The test module includes an ammeter and a voltmeter to measure the total current and the total voltage of the thermistor array respectively.

[0041] The voltage pulse control array includes a voltage pulse generator and a relay array, and the relay array includes at least two relays. ...

Embodiment 2

[0048] Embodiment 2 provided by the present invention is an embodiment of a method for continuously monitoring the resistance of a thermistor provided by the present invention. The method includes:

[0049] In step 1, the DC power supply is connected and provides power to at least two thermistors connected in parallel, and the total voltage and current of the thermistors connected in parallel are measured in real time.

[0050] In step 2, each thermistor is connected to the corresponding relay, each thermistor is connected in series with the corresponding relay, and the voltage pulse generator is connected to the thermistor through the relay.

[0051] Step 3, the central control system sends a test command, and the control is connected to each relay in turn. At any time, only one relay is in the connected state, and the control voltage pulse generator generates a pulse voltage, which acts on the thermistor corresponding to the connected relay, and measures in real time The tot...

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Abstract

The invention is suitable for the technical field of thermistor technology, and provides a device for uninterrupted recursive monitoring of the value of resistance of thermistors, wherein at least two thermistors are mutually connected in parallel. A test module comprises an ammeter and a voltmeter which can measure the total current and the total voltage of a thermistor array respectively. The number of relays is equal to the number of the thermistors in the thermistor array; and the relays are connected with the corresponding thermistors in series. A voltage pulse generator is connected with the thermistor array through a relay array. A central control system controls the voltage pulse generator to generate pulse voltage, and applies to the thermistors corresponding to the relays under the connection state. The central control system controls on / off of each relay and calculates the value of resistance of each thermistor under the uninterrupted state. The value of resistance of a plurality of thermistors under the energized state can be monitored respectively; the control degree of the test process can be improved; the continuity of the test process is high; and the accuracy of the test result is improved.

Description

technical field [0001] The invention belongs to the technical field of thermistors, and in particular relates to a device and a method for monitoring the resistance of thermistors without power cycle. Background technique [0002] The thermistor is a non-power device. During the thermistor test, it is usually necessary to connect the thermistor to the circuit for a life test, and then test the resistance of the thermistor before, during and after the test. Judging whether the resistance performance of the thermistor is stable or not according to its rate of change. [0003] At present, the conventional thermistor resistance test method on the market is mainly to disconnect the thermistor from the circuit and connect it to the multimeter pen for testing, so that the resistance value of the thermistor during the electrical test cannot be accurately monitored. At the same time, it will destroy the continuity of the thermistor test and affect the accuracy of the test results. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R27/08G01K15/00
Inventor 魏文彪王瑞兵马维维阳星易敏管志鹏段德群
Owner XIAOGAN HUAGONG GAOLI ELECTRONICS
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