Fault detection structure for automatic weather station temperature sensor
A technology of temperature sensor and automatic weather station, which is used in thermometer testing/calibration, thermometers, instruments, etc., can solve problems such as affecting the operation support ability of automatic weather stations and failure of automatic weather stations to find faults in a timely and effective manner, so as to improve operation support Ability, simple structure, accurate detection and positioning effect
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[0016] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0017] like Figure 1 ~ Figure 2 As shown: the present invention includes an excitation line 1, a temperature sensor 2, a signal line 3, a first voltage measurement module 4, an external excitation source 5, a second voltage measurement module 6, a third voltage measurement module 7, and a first AD conversion module 8 , the second AD conversion module 9 , the third AD conversion module 10 , the controller 11 and the output indication module 12 .
[0018] like figure 1 As shown: the temperature sensor 2 adopts Pt100, and the Pt100 is a platinum thermal resistance, and its resistance value will change with the change of temperature. The temperature sensor 2 has an excitation line 1 and a signal line 3, both of which are two. One excitation line 1 of the temperature sensor 2 is grounded through the resistor R, the other excitation line 1 is connected to one end...
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