CN206114775U - Multi -functional DC resistance measuring appearance - Google Patents
Multi -functional DC resistance measuring appearance Download PDFInfo
- 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
- Authority
- 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
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
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
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.
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 |
Family
ID=58530097
Family Applications (1)
| 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)
| Country | Link |
|---|---|
| CN (1) | CN206114775U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771633A (en) * | 2016-12-30 | 2017-05-31 | 易瓦特科技股份公司 | Hand-held instrument for measuring DC resistance |
| CN106771632A (en) * | 2016-12-30 | 2017-05-31 | 易瓦特科技股份公司 | Multi-channel DC resistance meter |
| 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 |
-
2016
- 2016-10-10 CN CN201621108781.7U patent/CN206114775U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771633A (en) * | 2016-12-30 | 2017-05-31 | 易瓦特科技股份公司 | Hand-held instrument for measuring DC resistance |
| CN106771632A (en) * | 2016-12-30 | 2017-05-31 | 易瓦特科技股份公司 | Multi-channel DC resistance meter |
| 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 |
| CN112816889B (en) * | 2020-12-30 | 2023-02-03 | 捷威动力工业江苏有限公司 | Method for correcting DCR test result of lithium ion battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206114775U (en) | Multi -functional DC resistance measuring appearance | |
| CN103149546B (en) | The field integrated tester of a kind of portable electric energy measuring terminal | |
| CN102890243B (en) | A kind of battery electric quantity measuring circuit, measurement apparatus and battery meter | |
| CN107290706A (en) | Measurement instrument on-site calibrator built in a kind of alternating-current charging pile | |
| CN105116278B (en) | A kind of electric energy meter is visited one house after another wire searcher | |
| CN106771632A (en) | Multi-channel DC resistance meter | |
| CN203658453U (en) | Wireless secondary voltage-drop and load tester provided with wireless synchronous communication function | |
| CN203012010U (en) | Iron loss measurement apparatus for silicon steel plate based on one-chip microcomputer | |
| CN204679622U (en) | With the three-phase intelligent electric-energy meter communication interface load capacity proving installation of communication module | |
| CN201402287Y (en) | Voltage drop detecting device of secondary circuit of voltage transformer | |
| CN105372620A (en) | Power metering detector | |
| CN106443567A (en) | Real-load test system for electric energy meters | |
| CN108535575A (en) | Power quality analysis device based on short-distance wireless communication technology | |
| CN207908608U (en) | Metering device wire searcher | |
| CN207181531U (en) | A kind of three phase capacitance electric inductance measuring-testing instrument | |
| CN105182022A (en) | Electric quantity depositing device and method during meter installation, power connection and exchange | |
| CN201319049Y (en) | High-tension current mutual-inductor transformation ratio tester | |
| CN205301413U (en) | Test system for vehicle quiescent current | |
| CN209606500U (en) | A kind of high side current pincers | |
| CN104090174A (en) | Method and device for integrated line parameter insulation and phase checking test | |
| CN208672718U (en) | Power quality analysis device based on short-distance wireless communication technology | |
| CN106526379A (en) | Method for implementing power quality test analysis based on wireless sampling | |
| CN207336615U (en) | A kind of Zinc-Oxide Arrester electrification detection system | |
| CN110308314A (en) | Low-voltage anti-theft electric switch and its electricity anti-theft method | |
| CN213275769U (en) | Novel low-voltage loop resistance tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20201010 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |