CN203241476U - Loop resistance testing instrument - Google Patents

Loop resistance testing instrument Download PDF

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Publication number
CN203241476U
CN203241476U CN 201320292805 CN201320292805U CN203241476U CN 203241476 U CN203241476 U CN 203241476U CN 201320292805 CN201320292805 CN 201320292805 CN 201320292805 U CN201320292805 U CN 201320292805U CN 203241476 U CN203241476 U CN 203241476U
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CN
China
Prior art keywords
signal
module
tested
resistance
loop
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Expired - Fee Related
Application number
CN 201320292805
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Chinese (zh)
Inventor
毕青春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YANGZHOU HUANDIAN ELECTRIC Co Ltd
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YANGZHOU HUANDIAN ELECTRIC Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN 201320292805 priority Critical patent/CN203241476U/en
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Publication of CN203241476U publication Critical patent/CN203241476U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model discloses a loop resistance testing instrument. A signal sampling module collects a current signal and a resistance signal of a tested loop; a microprocessor module analyzes and processes the received current signal and the received resistance signal of the tested loop and outputs a tested loop inspection and test result; a digital display screen module receives the tested loop inspection and test result output by the microprocessor module and digitally displays the tested loop inspection and test result; and a keyboard control module inputs a control instruction to the microprocessor module. The loop resistance testing instrument provided by the utility model has the advantages of less susceptibility to interference of environments and magnetic fields, good stability, small deviation of measurement results, high accuracy, simple measurement operation process, simple structure, strong practicability and strong generalization and application values.

Description

A kind of circuit resistance tester
Technical field
The utility model belongs to electric and electronic technical field, relates in particular to a kind of circuit resistance tester.
Background technology
At present, the circuit resistance tester of using in electric system generally adopts the direct current resistance of conventional both arms direct current bridge measuring transformer coil, the contact resistance of primary cut-out, the measuring current of this class electric bridge is a milliampere level, when measuring the contact resistance of high-voltage switch gear galvanic circle, be subject to easily the impact of oxide layer between oil film and sound contact, make the resistance value several times bigger than normal of measurement.
The circuit resistance tester that prior art provides is subjected to the interference in environment, magnetic field easily, poor stability, and the measurement result deviation is large, and accuracy is lower, and measurement procedure is complicated.
The utility model content
The purpose of this utility model is to provide a kind of circuit resistance tester, is intended to solve the circuit resistance tester that prior art provides, and is subjected to easily the interference in environment, magnetic field, poor stability, the measurement result deviation is large, and accuracy is lower, the problem of measurement procedure complexity.
The utility model is achieved in that a kind of circuit resistance tester, and this circuit resistance tester comprises:
Be used for gathering current signal and the resistance signal in tested loop, and to the current signal in the tested loop that gathers and the signal sampling module that resistance signal is exported;
Be connected with described signal sampling module, be used for receiving current signal and the resistance signal in the tested loop that described signal sampling module gathers, current signal and resistance signal to the tested loop that receives carry out analyzing and processing, export the microprocessor module of tested in-circuit testing test result signal;
Be connected with described microprocessor module, be used for receiving the tested in-circuit testing test result signal of described microprocessor module output, and tested in-circuit testing test result is carried out the digital digital display screen module that shows;
Be connected with described microprocessor module, be used for the Keyboard Control module to described microprocessor module input control order.
Further, described signal sampling module comprises:
Current sample module for the current signal that gathers tested loop;
Resistance sampling module for the resistance signal that gathers tested loop.
Further, be provided with seven touch keys on the described Keyboard Control module.
Further, described microprocessor module clock can be stored 20 groups of test datas.
Further, described digital display screen module adopts 15 figure place display units.
The circuit resistance tester that the utility model provides, the signal sampling module gathers current signal and the resistance signal in tested loop, microprocessor module carries out analyzing and processing to current signal and the resistance signal in the tested loop that receives, export tested in-circuit testing test result signal, digital display screen module receives the tested in-circuit testing test result signal of microprocessor module output, and tested in-circuit testing test result is carried out number show that the Keyboard Control module is to the microprocessor module input control order; The circuit resistance tester that the utility model provides is not subject to the interference in environment, magnetic field, good stability, and the measurement result deviation is little, and accuracy is high, and measurement procedure is simple, and is simple in structure, practical, has stronger propagation and employment and is worth.
Description of drawings
Fig. 1 is the structured flowchart of the circuit resistance tester that provides of the utility model embodiment.
Among the figure: 11, Keyboard Control module; 12, signal sampling module; 13, microprocessor module; 14, digital display screen module.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Fig. 1 shows the structure of the circuit resistance tester that the utility model embodiment provides.For convenience of explanation, only show the part relevant with the utility model embodiment.
This circuit resistance tester comprises:
Be used for gathering current signal and the resistance signal in tested loop, and to the current signal in the tested loop that gathers and the signal sampling module 12 that resistance signal is exported;
Be connected with signal sampling module 12, be used for to receive current signal and the resistance signal in the tested loop that signal sampling module 12 gathers, current signal and resistance signal to the tested loop that receives carry out analyzing and processing, export the microprocessor module 13 of tested in-circuit testing test result signal;
Be connected with microprocessor module 13, be used for receiving the tested in-circuit testing test result signal of microprocessor module 13 outputs, and tested in-circuit testing test result is carried out the digital digital display screen module 14 that shows;
Be connected with microprocessor module 13, be used for the Keyboard Control module 11 to microprocessor module 13 input control orders.
In the utility model embodiment, signal sampling module 12 comprises:
Current sample module for the current signal that gathers tested loop;
Resistance sampling module for the resistance signal that gathers tested loop.
In the utility model embodiment, be provided with seven touch keys on the Keyboard Control module 11.
In the utility model embodiment, microprocessor module 13 clocks can be stored 20 groups of test datas.
In the utility model embodiment, digital display screen module 14 adopts 15 figure place display units.
Below in conjunction with drawings and the specific embodiments application principle of the present utility model is further described.
As shown in Figure 1, the circuit resistance tester that provides of the utility model comprises: Keyboard Control module 11, signal sampling module 12, microprocessor module 13, digital display screen module 14;
Keyboard Control module 11 comprises 7 touch keys, and is very clear, easy to operate, is used for the user and sends instruction to microprocessor module 13;
Signal sampling module 12 comprises current sample module and resistance sampling module, and the current sample module is responsible for gathering the current signal in tested loop, and the resistance sampling module is responsible for gathering the resistance signal in tested loop, and delivers to microprocessor module 13;
Clock in the microprocessor module 13, in 20 groups of test data memory functions are arranged, be used for the signal that analyzing and processing signal sampling module 12 gathers, and the result after will processing delivers to digital display screen module 14;
Digital display screen module 14 adopts 15 figure place display units, is used for receiving and the real-time data that show after microprocessor module 13 is processed.
Signal sampling module 12 comprises current sample module and resistance sampling module, and the current sample module is responsible for gathering the current signal in tested loop, and the resistance sampling module is responsible for gathering the resistance signal in tested loop, and delivers to microprocessor module 13; Keyboard Control module 11 is controlled by the user directly, and the user sends instruction by Keyboard Control module 11 to microprocessor module 13; Microprocessor module 13 is according to user's instruction, the signal that is gathered by the Single-chip Controlling analyzing and processing signal sampling module 12 of inside, and the result after will processing delivers to digital display screen module 14; Data after digital display screen module 14 receives and demonstration microprocessor module 13 is processed in real time to realize the verification test to various switchgears galvanic circle resistance, electric current, can prevent that high-tension current and grounded screen accident from occuring simultaneously effectively.
The circuit resistance tester that the utility model embodiment provides, signal sampling module 12 gathers current signal and the resistance signal in tested loop, current signal and the resistance signal in 13 pairs of tested loops that receive of microprocessor module carry out analyzing and processing, export tested in-circuit testing test result signal, digital display screen module 14 receives the tested in-circuit testing test result signal of microprocessor module 13 outputs, and tested in-circuit testing test result is carried out number show that Keyboard Control module 11 is to microprocessor module 13 input control orders; The circuit resistance tester that the utility model provides is not subject to the interference in environment, magnetic field, good stability, and the measurement result deviation is little, and accuracy is high, and measurement procedure is simple, and is simple in structure, practical, has stronger propagation and employment and is worth.
Below only be preferred embodiment of the present utility model, not in order to limiting the utility model, all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims (5)

1. a circuit resistance tester is characterized in that, this circuit resistance tester comprises:
Be used for gathering current signal and the resistance signal in tested loop, and to the current signal in the tested loop that gathers and the signal sampling module that resistance signal is exported;
Be connected with described signal sampling module, be used for receiving current signal and the resistance signal in the tested loop that described signal sampling module gathers, current signal and resistance signal to the tested loop that receives carry out analyzing and processing, export the microprocessor module of tested in-circuit testing test result signal;
Be connected with described microprocessor module, be used for receiving the tested in-circuit testing test result signal of described microprocessor module output, and tested in-circuit testing test result is carried out the digital digital display screen module that shows;
Be connected with described microprocessor module, be used for the Keyboard Control module to described microprocessor module input control order.
2. circuit resistance tester as claimed in claim 1 is characterized in that, described signal sampling module further comprises:
Current sample module for the current signal that gathers tested loop;
Resistance sampling module for the resistance signal that gathers tested loop.
3. circuit resistance tester as claimed in claim 1 is characterized in that, is provided with seven touch keys on the described Keyboard Control module.
4. circuit resistance tester as claimed in claim 1 is characterized in that, described microprocessor module clock can be stored 20 groups of test datas.
5. circuit resistance tester as claimed in claim 1 is characterized in that, described digital display screen module adopts 15 figure place display units.
CN 201320292805 2013-05-16 2013-05-16 Loop resistance testing instrument Expired - Fee Related CN203241476U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320292805 CN203241476U (en) 2013-05-16 2013-05-16 Loop resistance testing instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320292805 CN203241476U (en) 2013-05-16 2013-05-16 Loop resistance testing instrument

Publications (1)

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CN203241476U true CN203241476U (en) 2013-10-16

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CN 201320292805 Expired - Fee Related CN203241476U (en) 2013-05-16 2013-05-16 Loop resistance testing instrument

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CN (1) CN203241476U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108169567A (en) * 2017-12-29 2018-06-15 国网上海市电力公司 A kind of circuit resistance tester of breaker
CN111948459A (en) * 2020-06-16 2020-11-17 国网浙江义乌市供电有限公司 Alternating current loop resistance test system in low-voltage distribution network

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108169567A (en) * 2017-12-29 2018-06-15 国网上海市电力公司 A kind of circuit resistance tester of breaker
CN111948459A (en) * 2020-06-16 2020-11-17 国网浙江义乌市供电有限公司 Alternating current loop resistance test system in low-voltage distribution network

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131016

Termination date: 20190516

CF01 Termination of patent right due to non-payment of annual fee