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

Inactive Publication Date: 2013-08-21
CMA METEOROLOGICAL OBSERVATION CENT
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

When the temperature sensor fails, the corresponding failure cannot be found in time and effectively in the automatic weather station, which will affect the operation guarantee capability of the automatic weather station

Method used

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  • Fault detection structure for automatic weather station temperature sensor
  • Fault detection structure for automatic weather station temperature sensor

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Experimental program
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Embodiment Construction

[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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Abstract

The invention relates to a fault detection structure for an automatic weather station temperature sensor. The fault detection structure comprises a temperature sensor, wherein one excitation line of the temperature sensor is earthed by a resistor; the other excitation line of the temperature sensor is electrically connected with one end of an external excitation source; two ends of the resistor are provided with second voltage measurement modules; the signal line of the temperature sensor is connected with a third voltage measurement module; the excitation lines of the temperature sensor are connected with a first voltage measurement module; the output ends of the first voltage measurement module, the second voltage measurement modules and the third voltage measurement module are connected; the output end of a controller is connected with an output indication module; and after the controller inputs a corresponding voltage signal to the first voltage measurement module, the second voltage measurement modules and the third voltage measurement module to compare and process, an output indication module is used for outputting a corresponding fault detection result. The fault detection structure is simple, is convenient to install and use, is accurate to detect and locate and is safe and reliable, and the operation guaranteeing capability is improved.

Description

technical field [0001] The invention relates to a fault detection structure, in particular to a fault detection structure of a temperature sensor of an automatic weather station, and belongs to the technical field of automatic detection of an automatic weather station. Background technique [0002] The temperature sensor is the necessary equipment for the automatic weather station to detect the temperature signal; various failures are prone to occur during the installation and use of the temperature sensor. When the temperature sensor fails, the corresponding fault cannot be found in time and effectively in the automatic weather station, which will affect the operation guarantee capability of the automatic weather station. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a fault detection structure for temperature sensors of automatic weather stations, which has simple structure, convenien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K15/00G01W1/18
Inventor 裴翀金红伟花卫东
Owner CMA METEOROLOGICAL OBSERVATION CENT
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