CN206114775U - Multi -functional DC resistance measuring appearance - Google Patents

Multi -functional DC resistance measuring appearance Download PDF

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Publication number
CN206114775U
CN206114775U CN201621108781.7U CN201621108781U CN206114775U CN 206114775 U CN206114775 U CN 206114775U CN 201621108781 U CN201621108781 U CN 201621108781U CN 206114775 U CN206114775 U CN 206114775U
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CN
China
Prior art keywords
total head
circuit
processing unit
central processing
current
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN201621108781.7U
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Chinese (zh)
Inventor
霍建华
杨旭梅
王乐
刘庆河
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.)
Baoding Langxin Electronic Science And Technology Co Ltd
Original Assignee
Baoding Langxin Electronic Science And Technology 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.)
Filing date
Publication date
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Priority to CN201621108781.7U priority Critical patent/CN206114775U/en
Application granted granted Critical
Publication of CN206114775U publication Critical patent/CN206114775U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a multi -functional DC resistance measuring appearance, including the central processing unit who is connected with WIFI communication module, central processing unit disposes temperature conversion module, central processing unit's temperature data collection circuit, total head constant -current control module, voltage filtering return circuit and electric current filtering circuit are connected to through converting circuit, total head constant -current control module includes: and the total head circuit and the constant current source that connect, total head circuit connection has a voltage acquisition module, and temperature conversion module is with the resistance value under the same temperature that converts of the direct current resistance under the different temperatures, and this total head constant -current control module stresses to begin to add the electric current that total head (high pressure) improves the coil rapidly on the basis of stable state is forced to the circuit, shortens transient process. Then with undercurrent constant current source standing current measurement improvement testing speed, make to measure more accurate, take the DC resistance measuring appearance of WIFI communication module communication function to realize communication and remote control function, the tester's of being convenient for observation better.

Description

A kind of multifunctional DC resistance tester
Technical field
This utility model is related to Application of Power Metering Instruments technical field, more particularly, it relates to a kind of multifunctional DC resistance Tester.
Background technology
At present the method for measurement D.C. resistance has two kinds of bridge method and voltage drop method.
When the equipment of pre-test D.C. resistance is often present, time of measuring is long, the skill that certainty of measurement is low and test process is loaded down with trivial details Art defect.
Utility model content
In view of this, this utility model is provided and a kind of is rapidly completed accurate, the easy to use multifunctional DC of detection, result Resistance meter.
A kind of multifunctional DC resistance tester, including:
The central processing unit of WIFI communication module is connected with, the central processing unit is configured with temperature conversion module;
Temperature collection circuit, total head constant-current control module, the voltage filter of central processing unit are connected to by change-over circuit Loop and current filtering loop;
The total head constant-current control module includes:
And the total head circuit that connects and constant-current source;
The total head circuit is connected with voltage acquisition module.
Preferably, the electric discharge sound alarm unit being connected with central processing unit is also included.
Preferably, 232 communication interfaces being connected with central processing unit are also included.
Preferably, the printer being connected with central processing unit is also included.
Preferably, voltage filter loop and current filtering loop are respectively by a programmable amplifier and the central processing unit Connection.
It can be seen from above-mentioned technical scheme that, the central authorities for being connected with WIFI communication module in this utility model embodiment Processor, the central processing unit is configured with temperature conversion module;The temperature for being connected to central processing unit by change-over circuit is adopted Collector, total head constant-current control module, voltage filter loop and current filtering loop;The total head constant-current control module includes: And the total head circuit that connects and constant-current source;The total head circuit is connected with voltage acquisition module, and temperature converts module by different temperatures Under D.C. resistance be converted to resistance value under same temperature, the total head constant-current control module forces the basis of stable state in circuit On, emphasize to start the electric current for adding total head (high pressure) to improve coil rapidly, shorten transient process.Then it is steady with small current constant-current source Determine electric current and improve test speed, make measurement more accurate to measure;Unidirectional current with WIFI communication module communication function Resistance tester, so that communication and remote control function is better achieved, is easy to the observation of tester.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is a kind of multifunctional DC resistance tester structural representation disclosed in this utility model embodiment.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of this utility model protection.
This utility model embodiment discloses a kind of multifunctional DC resistance tester of offer, realizes to voltage current phase Accurate accurately technical purpose.
Fig. 1 shows a kind of multifunctional DC resistance tester, including:
The central processing unit 1 of WIFI communication module 11 is connected with, the central processing unit 1 is configured with temperature conversion module;
Gathered according to temperature sensor, the corresponding temperature of the resistance value for currently testing out is calculated by central processing unit, can By the resistance value conversion under different temperatures to same temperature, by computed in software:
Rx=Ra* ((T+tx)/(T+ta));
In formula:Rx--- is scaled to resistance during temperature tx;
The resistance that Ra--- temperature is measured when being ta;
T----- temperature conversion factors, copper cash is 235, and aluminum steel is 225;
Tx---- need to convert the temperature of Rx
Temperature during ta----- measurement Ra.
Increase WIFI communication module 11 carries out internal communication using Transistor-Transistor Logic level, improves communication reliability.This WIFI communication Module is set to WIFI communication module main website, and intelligent terminal's (such as mobile phone) is by WIFI communication module 11 and central control unit 1 Communication, realizes the function of radio management instrument for measuring DC resistance.
The WIFI communication module 11 is the flush bonding module for meeting network standard for being based on USB (universal serial bus), built-in ICP/IP protocol stack, can realize the conversion between serial ports, WIFI communication module interface.The WIFI communication module arranges WIFI and leads to News modules A P hotspot pattern connection mobile phone or connection instrument for measuring DC resistance device.
Temperature collection circuit 3, the total head constant-current control module 4, voltage of central processing unit 1 are connected to by change-over circuit 2 Filter circuit 5 and current filtering loop 6;
As shown in figure 1, voltage filter loop 5 and current filtering go back to 6 tunnels respectively by a programmable amplifier and the central authorities Processor 1 connects.
The total head constant-current control module 4 includes:
And the total head circuit 10 that connects and constant-current source 20;
The total head circuit 10 is connected with voltage acquisition module 30.
The operation principle of total head constant-current control module 4 is as follows;
Referring to Fig. 1, controlling switch K of the CPU 1 closure, by sampling resistor R and total head switch K be added to by The two ends of winding are surveyed, tested winding is charged, magnitude of voltage size depends on the L of measurement winding, the charging interval required by R Constant current value I0, sampling resistor pressure drop Un=I0*R, at this moment CPU 1 disconnect K;
Isolating diode is turned on automatically, and constant-current source 20 to tested winding supplies I0 electric currents.The electric current of circuit is forced to stable On I0, circuit is entered forces stable state, and voltage acquisition module 30 reads sample voltage value, calculates DC resistance, total head-perseverance The current charge time is very short, can ignore compared with time of measuring, so as to work efficiency.
Fig. 1 also show:Electric discharge sound alarm unit 7,232 communication interfaces 8, the printer 9 being connected with central processing unit And usb 12.
In sum;
It can be seen from above-mentioned technical scheme that, the central authorities for being connected with WIFI communication module in this utility model embodiment Processor, the central processing unit is configured with temperature conversion module;The temperature for being connected to central processing unit by change-over circuit is adopted Collector, total head constant-current control module, voltage filter loop and current filtering loop;The total head constant-current control module includes: And the total head circuit that connects and constant-current source;The total head circuit is connected with voltage acquisition module, and temperature converts module by different temperatures Under D.C. resistance be converted to resistance value under same temperature, the total head constant-current control module forces the basis of stable state in circuit On, emphasize to start the electric current for adding total head (high pressure) to improve coil rapidly, shorten transient process.Then it is steady with small current constant-current source Determine electric current and improve test speed, make measurement more accurate to measure;Unidirectional current with WIFI communication module communication function Resistance tester, so that communication and remote control function is better achieved, is easy to the observation of tester.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other The difference of embodiment, between each embodiment identical similar portion mutually referring to.To the upper of the disclosed embodiments State bright, professional and technical personnel in the field is realized or use this utility model.Various modifications to these embodiments are right Will be apparent for those skilled in the art, generic principles defined herein can be without departing from this reality In the case of with new spirit or scope, realize in other embodiments.Therefore, this utility model is not intended to be limited to this These embodiments shown in text, and it is to fit to the most wide scope consistent with principles disclosed herein and features of novelty.

Claims (5)

1. a kind of multifunctional DC resistance tester, it is characterised in that include:
The central processing unit of WIFI communication module is connected with, the central processing unit is configured with temperature conversion module;
Temperature collection circuit, total head constant-current control module, the voltage filter loop of central processing unit are connected to by change-over circuit With current filtering loop;
The total head constant-current control module includes:
And the total head circuit that connects and constant-current source;
The total head circuit is connected with voltage acquisition module.
2. multifunctional DC resistance tester as claimed in claim 1, it is characterised in that also include being connected with central processing unit Electric discharge sound alarm unit.
3. multifunctional DC resistance tester as claimed in claim 1, it is characterised in that also include being connected with central processing unit 232 communication interfaces.
4. multifunctional DC resistance tester as claimed in claim 1, it is characterised in that also include being connected with central processing unit Printer.
5. multifunctional DC resistance tester as claimed in claim 1, it is characterised in that voltage filter loop and current filtering Loop is connected respectively by a programmable amplifier with the central processing unit.
CN201621108781.7U 2016-10-10 2016-10-10 Multi -functional DC resistance measuring appearance Expired - Fee Related CN206114775U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621108781.7U CN206114775U (en) 2016-10-10 2016-10-10 Multi -functional DC resistance measuring appearance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621108781.7U CN206114775U (en) 2016-10-10 2016-10-10 Multi -functional DC resistance measuring appearance

Publications (1)

Publication Number Publication Date
CN206114775U true CN206114775U (en) 2017-04-19

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Application Number Title Priority Date Filing Date
CN201621108781.7U Expired - Fee Related CN206114775U (en) 2016-10-10 2016-10-10 Multi -functional DC resistance measuring appearance

Country Status (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106771632A (en) * 2016-12-30 2017-05-31 易瓦特科技股份公司 Multi-channel DC resistance meter
CN106771633A (en) * 2016-12-30 2017-05-31 易瓦特科技股份公司 Hand-held instrument for measuring DC resistance
CN109507500A (en) * 2018-11-08 2019-03-22 国家电网有限公司 A kind of dedicated computing device for electrical test
CN109799390A (en) * 2018-12-29 2019-05-24 国网浙江建德市供电有限公司 A kind of breaking-closing operating coil D.C. resistance intelligent device for measuring
CN112816889A (en) * 2020-12-30 2021-05-18 捷威动力工业江苏有限公司 Method for correcting DCR test result of lithium ion battery

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106771632A (en) * 2016-12-30 2017-05-31 易瓦特科技股份公司 Multi-channel DC resistance meter
CN106771633A (en) * 2016-12-30 2017-05-31 易瓦特科技股份公司 Hand-held instrument for measuring DC resistance
CN109507500A (en) * 2018-11-08 2019-03-22 国家电网有限公司 A kind of dedicated computing device for electrical test
CN109799390A (en) * 2018-12-29 2019-05-24 国网浙江建德市供电有限公司 A kind of breaking-closing operating coil D.C. resistance intelligent device for measuring
CN112816889A (en) * 2020-12-30 2021-05-18 捷威动力工业江苏有限公司 Method for correcting DCR test result of lithium ion battery

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

Granted publication date: 20170419

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