CN205786821U - A kind of residual voltage tester - Google Patents
A kind of residual voltage tester Download PDFInfo
- Publication number
- CN205786821U CN205786821U CN201620504792.0U CN201620504792U CN205786821U CN 205786821 U CN205786821 U CN 205786821U CN 201620504792 U CN201620504792 U CN 201620504792U CN 205786821 U CN205786821 U CN 205786821U
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- control switch
- relay control
- power supply
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Abstract
This utility model relates to a kind of residual voltage tester, includes AC frequency conversion variable-voltage power supply, relay control switch, noninductive resistance, detection circuit, display and sample and connects seat；Described sample connects seat and is arranged on the power output end of AC frequency conversion variable-voltage power supply, and is provided with relay control switch between it；Described noninductive resistance is connected in parallel on relay control switch and is connected between seat with sample, and the signals collecting end of described detection circuit is connected to noninductive resistance and is connected with sample on the wire between seat and its signal output part is connected with display, control instruction outfan is connected with relay control switch.So, can be measured the residual voltage of electric equipment, accuracy of measurement and degree of accuracy quickly and easily by this tester high, operation safety, and simple in construction, production and processing is easy, low cost, is conducive to producing in batches, promoting the use of.
Description
Technical field
This utility model belongs to electric equipment detection technique field, particularly to a kind of residual voltage test
Instrument.
Background technology
At present, electric equipment all can carry out a series of safety detection before releasing market, the most residual
Remaining voltage detecting is a detection project extremely important, requisite.Now, either factory
Family or coherent detection mechanism are all to use directly to be plugged on by electric equipment and electricity to residual voltage detection
On the socket that network source connects, after then extracting about 2 seconds, the pin of test plug is the most charged, as
This detects operation more than 10 times repeatedly, with judge electric equipment residual voltage whether meet concerned countries,
The regulation in area, such as: the People's Republic of China (PRC) " GB 4706.1-2005 domestic and similar applications electricity
The safety of device " in regulation to residual voltage.
But, this traditional detection mode operates the most loaded down with trivial details, inconvenient, and detection efficiency is extremely low, simultaneously
Due to plug is extracted the time being connected several seconds with detection equipment also can consumable portion residual voltage, from
And cause accuracy in detection and degree of accuracy the highest, and plug plug had both easily caused defective socket repeatedly,
Also the harm shocked by electricity because of false touch plug base pin it is susceptible to.
Utility model content
In order to solve above-mentioned technical problem present in prior art, this utility model provides one can
Measure the residual voltage of electric equipment, accuracy of measurement and degree of accuracy quickly and easily high, operation peace
Entirely, and simple in construction, production and processing is easy, the residual voltage tester of low cost.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that
A kind of residual voltage tester, include AC frequency conversion variable-voltage power supply, relay control switch,
Noninductive resistance, detection circuit, display and sample connect seat；Described sample connects seat peace
It is contained in the power output end of AC frequency conversion variable-voltage power supply, and between it, is provided with relay control switch；Institute
State noninductive resistance to be connected in parallel on relay control switch and be connected between seat with sample, described detection circuit
Signals collecting end be connected to noninductive resistance and be connected with sample on the wire between seat and its signal
Outfan is connected with display, control instruction outfan is connected with relay control switch.
Further, described AC frequency conversion variable-voltage power supply is the AC frequency conversion variable-voltage power supply of 50/60Hz,
The resistance value of described noninductive resistance is 2000 Ω.
Further, described sample connects seat is power supply base.
Further, described detection circuit includes process chip and sample circuit；Described sample circuit
The wire that is connected between seat with noninductive resistance and sample of end of probe connect, its outfan and process
Chip connects；The signal output part of described process chip and control instruction outfan respectively with display and
Relay control switch connects.
The beneficial effects of the utility model are:
This utility model passes through technique scheme, can measure the residual of electric equipment quickly and easily
Remaining voltage, accuracy of measurement and degree of accuracy are high, operation safety, and simple in construction, and production and processing is held
Easily, low cost, be conducive to producing in batches, promoting the use of.
Accompanying drawing explanation
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings:
Fig. 1 is the structural principle signal of a kind of residual voltage tester embodiment described in the utility model
Figure.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with
Drawings and Examples, are further elaborated to this utility model.Should be appreciated that this place is retouched
The specific embodiment stated, only in order to explain this utility model, is not used to limit this utility model.
As shown in fig. 1:
This utility model embodiment provides a kind of residual voltage tester, includes AC frequency conversion transformation
Power supply 1, relay control switch 2, noninductive resistance 3, detection circuit 4, display 5 and detected sample
Product connect seat 6；The power supply that described sample connection seat 6 is arranged on AC frequency conversion variable-voltage power supply 1 is defeated
Go out end, and between it, be provided with relay control switch 2；Described noninductive resistance 3 is connected in parallel on relay control
System switch 2 is connected between seat 6 with sample, and the signals collecting end of described detection circuit 4 is connected to
Noninductive resistance 3 is connected with sample on the wire between seat 6 and its signal output part and display
5 connections, control instruction outfan are connected with relay control switch 2.Wherein, described AC frequency conversion
Variable-voltage power supply 1 can be the AC frequency conversion variable-voltage power supply of 50/60Hz, the resistance of described noninductive resistance 3
Value is 2000 Ω；Described detection circuit 4 includes processing chip 41 (such as STM32 chip) and sampling
Circuit 42；Described sample circuit 42 can be AD sample circuit (such as AD7606 sample circuit),
Wire that its end of probe is connected between seat 6 with noninductive resistance 3 and sample connects, its outfan with
Process chip 41 to connect；The signal output part of described process chip 41 and control instruction outfan are respectively
It is connected with display 5 and relay control switch 2.
The operation principle of residual voltage tester described in the utility model is: when starting to measure, work as detection
Circuit 4 starts timing when monitoring the supply voltage zero crossing of AC frequency conversion variable-voltage power supply 1 output, first
First process chip 41 through T/4 time interval (such as T=20ms, then time interval is 5ms) to
Relay control switch 2 sends signal, deenergization, then by sample circuit 42 (voltage measurement
Precision can be 10mV) voltage at interval measurement noninductive resistance 3 two ends, finally process chip 41 right
The sampled signal of sample circuit 42 feedback shows this voltage waveform by display 5 after processing,
Until the magnitude of voltage at noninductive resistance 3 two ends is 0.
So, the residual voltage of electric equipment can be measured by tester described in the utility model, inspection
Surveying easy to operate, quick, accuracy of measurement and degree of accuracy are high, operate safety, and structure is simple
Single, production and processing is easy, low cost, is conducive to producing in batches, promoting the use of.
The above is preferred implementation of the present utility model, it is noted that for the art
Those of ordinary skill for, on the premise of without departing from this utility model principle, it is also possible to if making
Dry improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (4)
1. a residual voltage tester, it is characterised in that: include AC frequency conversion variable-voltage power supply (1),
Relay control switch (2), noninductive resistance (3), detection circuit (4), display (5) and quilt
Test sample product connect seat (6)；Described sample connects seat (6) and is arranged on AC frequency conversion variable-voltage power supply
(1) power output end, and between it, it is provided with relay control switch (2)；Described noninductive resistance
(3) it is connected in parallel on relay control switch (2) to be connected with sample between seat (6), described spy
The signals collecting end of slowdown monitoring circuit (4) is connected to noninductive resistance (3) and is connected seat (6) with sample
Between wire on and its signal output part is connected with display (5), control instruction outfan with
Relay control switch (2) connects.
Residual voltage tester the most according to claim 1, it is characterised in that: described AC frequency conversion
Variable-voltage power supply (1) is the AC frequency conversion variable-voltage power supply of 50/60Hz, the electricity of described noninductive resistance (3)
Resistance is 2000 Ω.
Residual voltage tester the most according to claim 2, it is characterised in that: described sample
Connecting seat (6) is power supply base.
4. according to residual voltage tester described in claim 1 or 2 or 3, it is characterised in that: described
Detection circuit (4) includes process chip (41) and sample circuit (42)；Described sample circuit (42)
The wire that is connected between seat (6) with noninductive resistance (3) and sample of end of probe connect, it is defeated
Go out end and be connected with processing chip (41)；Signal output part and the control of described process chip (41) refer to
Outfan is made to be connected with display (5) and relay control switch (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620504792.0U CN205786821U (en) | 2016-05-26 | 2016-05-26 | A kind of residual voltage tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620504792.0U CN205786821U (en) | 2016-05-26 | 2016-05-26 | A kind of residual voltage tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205786821U true CN205786821U (en) | 2016-12-07 |
Family
ID=59979567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620504792.0U Expired - Fee Related CN205786821U (en) | 2016-05-26 | 2016-05-26 | A kind of residual voltage tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205786821U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727922A (en) * | 2017-08-16 | 2018-02-23 | 珠海格力电器股份有限公司 | A kind of control method of voltage check device, storage medium and equipment |
| CN109212319A (en) * | 2018-08-27 | 2019-01-15 | 古之恒信息科技（苏州）有限公司 | A kind of fuel oil electrical conductivity measurement circuit and measuring instrument |
| CN110470976A (en) * | 2019-08-30 | 2019-11-19 | 深圳市华怡丰科技有限公司 | A kind of sensor parameters tester and test method |
-
2016
- 2016-05-26 CN CN201620504792.0U patent/CN205786821U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727922A (en) * | 2017-08-16 | 2018-02-23 | 珠海格力电器股份有限公司 | A kind of control method of voltage check device, storage medium and equipment |
| CN109212319A (en) * | 2018-08-27 | 2019-01-15 | 古之恒信息科技（苏州）有限公司 | A kind of fuel oil electrical conductivity measurement circuit and measuring instrument |
| CN109212319B (en) * | 2018-08-27 | 2020-12-18 | 古之恒信息科技（苏州）有限公司 | Fuel conductivity measuring circuit and measuring instrument |
| CN110470976A (en) * | 2019-08-30 | 2019-11-19 | 深圳市华怡丰科技有限公司 | A kind of sensor parameters tester and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 519000 Guangdong Province, Zhuhai city Xiangzhou District Jiuzhou Road No. 1144 East Patentee after: Zhuhai entry exit inspection and Quarantine Bureau Patentee after: Ai Nuo Electronic Science and Technology Co., Ltd. of Zhuhai City Address before: 519000 Zhuhai, Kyushu Road, Guangdong, No. 1144 Patentee before: Zhuhai discrepancy inspection and quarantine bureau Patentee before: Ai Nuo Electronic Science and Technology Co., Ltd. of Zhuhai City |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20200526 |