CN202058981U - Power supply socket with electric leakage current measurement protection apparatus - Google Patents
Power supply socket with electric leakage current measurement protection apparatus Download PDFInfo
- Publication number
- CN202058981U CN202058981U CN2010206429535U CN201020642953U CN202058981U CN 202058981 U CN202058981 U CN 202058981U CN 2010206429535 U CN2010206429535 U CN 2010206429535U CN 201020642953 U CN201020642953 U CN 201020642953U CN 202058981 U CN202058981 U CN 202058981U
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- China
- Prior art keywords
- leakage current
- supply socket
- electric leakage
- power supply
- protective device
- 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
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Abstract
The utility model discloses a power supply socket with an electric leakage current measurement protection apparatus. The electric leakage current measurement protection apparatus comprises a mutual inductor, and also comprises an A/D converter, a CPU operation unit, an alarm unit and a line control unit which are connected in order, wherein the input and output ends of the mutual inductor are respectively connected with an apparatus to be detected and the A/D converter. The power supply socket itself is provided with the electric leakage current measurement protection apparatus, thereby being convenient for installation and small in volume. The electric leakage current of the apparatus to be detected is obtained through the mutual inductor by the power supply socket and is converted into a digital value, the digital value is compared with an alarm threshold, when the electric leakage current exceeds the alarm threshold the alarm unit sends an alarm signal and the connection between the line control unit and the apparatus to be detected is cut off, and when the electric leakage current is less than the alarm threshold, the connection between the line control unit and the apparatus to be detected is reset, and thereby the power supply socket with an electric leakage current measurement protection apparatus has good protection effect for the apparatus to be detected.
Description
Technical field
The utility model belongs to the power technology field, relates to a kind of supply socket of measuring protective device with leakage current particularly.
Background technology
All there is leakage current to some extent in various household electric appliances; and ordinary wall socket does not have the detection defencive function of leakage current, if this electric current is excessive, will cause electric energy loss and device damage; cause fire when serious, cause personnel and property to come to harm.Take place for fear of this situation, the form that people adopt instrument transformer (electric leakage instrument transformer) to add complicated checkout equipment is usually measured supply line in the building, and trouble is installed like this, and the volume of device is excessive, and the protection effect is undesirable.
The utility model content
Technology of the present utility model is dealt with problems and is: overcome the deficiencies in the prior art, the supply socket that provides a kind of band leakage current easy for installation, that volume is little, protection is effective to measure protective device.
Technical solution of the present utility model is: this band leakage current is measured the supply socket of protective device; its leakage current is measured protective device and is comprised instrument transformer and the A/D converter, CPU arithmetic element, alarm unit, the line control unit that connect successively, and the input of instrument transformer, output connect Devices to test, A/D converter respectively.
Because itself having leakage current, this supply socket measures protective device, so easy for installation, volume is little.This supply socket obtains the leakage current of Devices to test by instrument transformer; convert to then digital quantity and with alarm threshold value relatively; if leakage current surpasses alarm threshold value; alarm unit is just reported to the police and line control unit cuts off and being connected of Devices to test; when leakage current during less than alarm threshold value line control unit reset again and being connected of Devices to test, so effective to the protection of Devices to test.
Description of drawings
Fig. 1 is the circuit theory diagrams that leakage current of the present utility model is measured protective device.
Embodiment
Below the technical solution of the utility model is described in further detail.
Fig. 1 is the circuit theory diagrams that leakage current of the present utility model is measured protective device.This band leakage current is measured the supply socket of protective device; its leakage current is measured protective device and is comprised instrument transformer 1 and the A/D converter 5, CPU arithmetic element 6, alarm unit 7, the line control unit 8 that connect successively, and the input 11 of instrument transformer 1, output 12 connect Devices to test (not shown in figure 1), A/D converter 5 respectively.This supply socket obtains the leakage current of Devices to test by instrument transformer, convert to then digital quantity and with alarm threshold value relatively, if leakage current surpasses alarm threshold value, alarm unit is just reported to the police and line control unit cuts off and being connected of Devices to test, when leakage current during less than alarm threshold value line control unit reset again and being connected of Devices to test.
Preferably, in order to prevent this device of the excessive damage of leakage current, also comprise the amplitude limiter circuit 3, the amplifying circuit 4 that are electrically connected successively, the output of the input termination instrument transformer 1 of amplitude limiter circuit 3.
Preferably, alarm unit 7 comprises filter circuit and sound light alarming circuit.Sound light alarming circuit comprises red, yellow, green three indicator lights, wherein red light is represented to report to the police, and amber light is represented communication fault, and green light is represented normally.
Preferably, line control unit 8 comprises cut off the electricity supply circuit and reset circuit.
Preferably, the model of CPU arithmetic element is A96F902SO18.
Operation principle of the present utility model is: at first, in order to know certainty of measurement of the present utility model, the input 11 of instrument transformer 1 is connect simulation experiment circuit, promptly import the magnitude of current that oneself knows, and the output 12 of instrument transformer 1 inserts amplitude limiter circuits 3, and the magnitude of current that will be by this device acquisition and the magnitude of current that oneself knows compare learns certainty of measurement of the present utility model; Then, input 11 reception of instrument transformer 1 are surveyed the circuit of electric equipment, and the output 12 of instrument transformer 1 inserts amplitude limiter circuit 3, the leakage current of electric equipment to be measured like this is just successively through obtaining digital signal behind amplitude limiter circuit 3, amplifying circuit 4, the A/D converter, carry out filtering, alarm threshold value then relatively, if leakage current surpasses setting threshold, sound and light alarm and line disconnection.Do not surpass threshold value then reset circuit if check leakage current once more.
The utility model can be widely used in the measurement of the leakage current amount of various electric equipments; be particularly useful for fire-fighting domain; because this supply socket band leakage current is measured protective device, so the general relatively wall socket function of this device is more powerful, the end protection that realized supply line, easy for installation and have signal lamp indication, alarm sound and a circuit controlled function.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction; every foundation technical spirit of the present utility model all still belongs to the protection range of technical solutions of the utility model to any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. supply socket of measuring protective device with leakage current; it is characterized in that: leakage current is measured protective device and is comprised instrument transformer (1) and the A/D converter (5), CPU arithmetic element (6), alarm unit (7), the line control unit (8) that connect successively, and the input (11) of instrument transformer (1), output (12) connect Devices to test, A/D converter (5) respectively.
2. band leakage current according to claim 1 is measured the supply socket of protective device, it is characterized in that: also be provided with amplitude limiter circuit (3), amplifying circuit (4) successively between the output (12) of instrument transformer (1) and A/D converter (5).
3. band leakage current according to claim 2 is measured the supply socket of protective device, and it is characterized in that: alarm unit (7) comprises filter circuit and sound light alarming circuit.
4. band leakage current according to claim 3 is measured the supply socket of protective device, and it is characterized in that: line control unit (8) comprises cut off the electricity supply circuit and reset circuit.
5. band leakage current according to claim 4 is measured the supply socket of protective device, and it is characterized in that: the model of CPU arithmetic element is A96F902SO18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206429535U CN202058981U (en) | 2010-12-02 | 2010-12-02 | Power supply socket with electric leakage current measurement protection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206429535U CN202058981U (en) | 2010-12-02 | 2010-12-02 | Power supply socket with electric leakage current measurement protection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202058981U true CN202058981U (en) | 2011-11-30 |
Family
ID=45018946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206429535U Expired - Fee Related CN202058981U (en) | 2010-12-02 | 2010-12-02 | Power supply socket with electric leakage current measurement protection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202058981U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989722A (en) * | 2010-12-02 | 2011-03-23 | 饶学进 | Power socket with leakage current measurement protective device |
| CN103454477A (en) * | 2012-05-29 | 2013-12-18 | 上海汽车集团股份有限公司 | Method for controlling starting currents of automobile on basis of framework with single Hall sensor |
| CN103675493A (en) * | 2012-09-07 | 2014-03-26 | 上海汽车集团股份有限公司 | Fault detection method for starter of automobile |
| CN104345198A (en) * | 2013-07-26 | 2015-02-11 | 上海汽车集团股份有限公司 | Estimation method of storage battery working current in start and stop process and device thereof |
-
2010
- 2010-12-02 CN CN2010206429535U patent/CN202058981U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989722A (en) * | 2010-12-02 | 2011-03-23 | 饶学进 | Power socket with leakage current measurement protective device |
| CN103454477A (en) * | 2012-05-29 | 2013-12-18 | 上海汽车集团股份有限公司 | Method for controlling starting currents of automobile on basis of framework with single Hall sensor |
| CN103454477B (en) * | 2012-05-29 | 2016-06-22 | 上海汽车集团股份有限公司 | Control based on the automobile start electric current of single Hall sensor framework |
| CN103675493A (en) * | 2012-09-07 | 2014-03-26 | 上海汽车集团股份有限公司 | Fault detection method for starter of automobile |
| CN103675493B (en) * | 2012-09-07 | 2016-07-20 | 上海汽车集团股份有限公司 | Fault detection method for starter of automobile |
| CN104345198A (en) * | 2013-07-26 | 2015-02-11 | 上海汽车集团股份有限公司 | Estimation method of storage battery working current in start and stop process and device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20121202 |