CN201682260U - Intelligent electric leakage detection protector - Google Patents
Intelligent electric leakage detection protector Download PDFInfo
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- CN201682260U CN201682260U CN2010201586915U CN201020158691U CN201682260U CN 201682260 U CN201682260 U CN 201682260U CN 2010201586915 U CN2010201586915 U CN 2010201586915U CN 201020158691 U CN201020158691 U CN 201020158691U CN 201682260 U CN201682260 U CN 201682260U
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- ground wire
- detection module
- mcu control
- control centre
- leakage
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Abstract
The utility model discloses an intelligent electric leakage detection protector, which is characterized in that a phase line-ground wire electric leakage voltage detection module detects the voltage state between the phase line and the ground wire and sends the information to a MCU control center, a neutral wire-ground wire electric leakage voltage detection module detects the voltage state between neutral wire and the ground wire and sends the information to the MCU control center, the MCU control center controls the operation of an electric leakage current detection module, the electric leakage current detection module detects the electric leakage current state of the phase line and the neutral wire and sends the information to the MCU control center, a relay is arranged on the ground wire, a control chip is arranged in the MCU control center, a control program is written in the control chip, and the MCU control center respectively controls the operation of an LCD display module and a buzzer alarm module by corresponding to the control program as per the received information and controls the on/off of the relay. The utility model can perform the all-sided intelligent electric leakage detection to an electric water heater and carry out the corresponding protective measures.
Description
Technical field
The utility model relates to electric heater detection of electrical leakage field, especially a kind of intelligent detection and protection apparatus for leakage.
Background technology
Present most of water heater all is equipped with the conventional type creepage protection function; when this function only can solve the arbitrary utmost point of phase power supply unusual electric leakage is arranged; cut off electric power system immediately; and can not quote unusual reason; and carry out corresponding protection; can not carry out self check to system, accomplish real detection of electrical leakage and protection.
Summary of the invention
In order to overcome above-mentioned defective, the utility model provides a kind of intelligent detection and protection apparatus for leakage, can realize the comprehensive intelligent detection of electrical leakage of electric heater and carries out corresponding safeguard measure.
The utility model for the technical scheme that solves its technical problem and adopt is:
A kind of intelligent detection and protection apparatus for leakage; comprise MCU control centre; intelligence detection of electrical leakage module; LCD display module and buzzer warning module; described intelligent detection of electrical leakage module is by the leakage current detection module; phase line-ground wire electrical leakage voltage detection module and zero line-ground wire electrical leakage voltage detection module is formed; described phase line-ground wire electrical leakage voltage detection module detects the voltage condition between phase line and ground wire and is messaging in MCU control centre; described zero line-ground wire electrical leakage voltage detection module detects the voltage condition between zero line and ground wire and is messaging in MCU control centre; described MCU control centre controls described leakage current detection module running; this leakage current detection module detects the leakage current state of described phase line and zero line and is messaging in MCU control centre; described ground wire is provided with a relay; be provided with control chip in the described MCU control centre; programming has control program in this control chip, and described MCU control centre is to should control program pressing the break-make that the information that is received is controlled described LCD display module and the running of buzzer warning module respectively and controlled described relay.
As further improvement of the utility model, described phase line-ground wire electrical leakage voltage detection module detects the voltage condition between phase line and ground wire and is messaging in MCU control centre: be provided with comparison circuit in described phase line-ground wire electrical leakage voltage detection module, phase line when voltage is less than 24V between phase line and ground wire-ground wire electrical leakage voltage detection module carries low level in MCU control centre, and phase line when voltage is more than or equal to 24V between phase line and ground wire-ground wire electrical leakage voltage detection module carries high level in MCU control centre; Described zero line-ground wire electrical leakage voltage detection module detects the voltage condition between zero line and ground wire and is messaging in MCU control centre: be provided with comparison circuit in described zero line-ground wire electrical leakage voltage detection module, zero line when voltage is less than 24V between zero line and ground wire-ground wire electrical leakage voltage detection module carries low level in MCU control centre, and zero line when voltage is greater than 24V between zero line and ground wire-ground wire electrical leakage voltage detection module carries high level in MCU control centre.
As further improvement of the utility model, described phase line-ground wire electrical leakage voltage detection module is connected mains-supplied with zero line-ground wire electrical leakage voltage detection module by the tripod electrical socket, be provided with a direct current power module, this DC power supplier conversion civil power is direct current and is powered at described MCU control centre.
As further improvement of the utility model, the signal end that described leakage current detection module is controlled by described MCU control centre is that receiving terminal and its signal end that is messaging in MCU control centre are output, described MCU control centre puts the receiving terminal of high or low level signal in the leakage current detection module by force by control program, and this is put by force and forms high or low level behind signal detects described phase line and zero line through the leakage current detection module the leakage current state and be delivered to MCU control centre in the output of leakage current detection module.
As further improvement of the utility model, described LCD display module shows two codes.
The beneficial effects of the utility model are: the utility model satisfies following function: automatically detect distribution unusual (between phase line and the ground wire, electrical leakage voltage detects between zero line and the ground wire, can detect simultaneously ground wire unusual etc.) 1.; 2. can quote electric leakage occurrence cause (showing) by the LCD display module; 3. the protection ground wire is unusual when charged, can make machine and power ground disconnect (realizing the ground wire break-make by relay); 4. the detection of electrical leakage system can self check (leakage current detection); 5. during unprotect ground connection, it is charged unusual to detect casing equally, and the utility model can be realized the comprehensive intelligent detection of electrical leakage of electric heater and carry out corresponding safeguard measure, thereby reach the safe handling of water heater.
Description of drawings
Fig. 1 is the utility model detection of electrical leakage schematic diagram;
Fig. 2 is the circuit diagram of phase line described in the utility model-ground wire electrical leakage voltage detection module;
Fig. 3 is the circuit diagram of zero line described in the utility model-ground wire electrical leakage voltage detection module;
Fig. 4 is the circuit diagram of leakage current detection module described in the utility model;
Fig. 5 is the connecting circuit figure of MCU control centre described in the utility model and LCD display circuit;
Fig. 6 is a principle framework schematic diagram of the present utility model.
Embodiment
Embodiment: a kind of intelligent detection and protection apparatus for leakage; comprise MCU control centre 1; intelligence detection of electrical leakage module 2; LCD display module 3 and buzzer warning module 4; described intelligent detection of electrical leakage module 2 is by leakage current detection module X1; phase line-ground wire electrical leakage voltage detection module X2 and zero line-ground wire electrical leakage voltage detection module X3 forms; described phase line-ground wire electrical leakage voltage detection module X2 detects the voltage condition between phase line L and ground wire E and is messaging in MCU control centre 1; described zero line-ground wire electrical leakage voltage detection module X3 detects the voltage condition between zero line N and ground wire E and is messaging in MCU control centre 1; the described leakage current detection module X1 running of described MCU control centre's 1 control; this leakage current detection module X1 detects the leakage current state of described phase line and zero line and is messaging in MCU control centre 1; described ground wire is provided with a relay EK; be provided with control chip in the described MCU control centre 1; programming has control program in this control chip, and the break-make that the information that is received is controlled described LCD display module 3 and 4 runnings of buzzer warning module respectively and controlled described relay EK should control program be pressed by 1 pair in described MCU control centre.
Described phase line-ground wire electrical leakage voltage detection module X2 detects the voltage condition between phase line L and ground wire E and is messaging in MCU control centre 1: be provided with comparison circuit among described phase line-ground wire electrical leakage voltage detection module X2, phase line when voltage is less than 24V between phase line L and ground wire E-ground wire electrical leakage voltage detection module X2 carries low level in MCU control centre 1, and phase line when voltage is more than or equal to 24V between phase line L and ground wire E-ground wire electrical leakage voltage detection module X2 carries high level in MCU control centre 1; Described zero line-ground wire electrical leakage voltage detection module X3 detects the voltage condition between zero line and ground wire and is messaging in MCU control centre 1: be provided with comparison circuit in described zero line-ground wire electrical leakage voltage detection module X3, zero line when voltage is less than 24V between zero line N and ground wire E-ground wire electrical leakage voltage detection module X3 carries low level in MCU control centre 1, and zero line when voltage is greater than 24V between zero line N and ground wire E-ground wire electrical leakage voltage detection module X3 carries high level in MCU control centre 1.
Described phase line-ground wire electrical leakage voltage detection module X2 is connected mains-supplied with zero line-ground wire electrical leakage voltage detection module X3 by the tripod electrical socket, be provided with a direct current power module 5, this DC power supplier 5 conversion civil powers are direct current and are powered at described MCU control centre 1.
The signal end that described leakage current detection module X1 is controlled by described MCU control centre 1 is that receiving terminal EL-T and its signal end that is messaging in MCU control centre 1 are output EL-D, described MCU control centre 1 puts the receiving terminal EL-T of high or low level signal in leakage current detection module X1 by force by control program, and this is put by force and forms high or low level behind signal detects described phase line and zero line through the leakage current detection module the leakage current state and be delivered to MCU control centre 1 in the output EL-D of leakage current detection module X1.
Described LCD display module 3 shows two codes.
As shown in Figure 1, the utility model working method is as follows:
One, holding state detection of electrical leakage
During the water heater power-up initializing, at first disconnect relay EK, and between phase line L and the ground wire E and the voltage status between zero line N and the ground wire E detect judgement, if the output level value is a (a=1 or 0) after the voltage status between phase line-ground wire electrical leakage voltage detection module X2 (circuit diagram as shown in Figure 2) detection judgement phase line L and the ground wire E, if it is b (b=1 or 0) that zero line-ground wire electrical leakage voltage detection module X3 (circuit diagram is as shown in Figure 3) detects the level value of exporting after the voltage status of judging between zero line N and the ground wire E, then:
Work as a=0, during b=0, relay EK connects, and buzzer warning module 4 is reported to the police and (E1 is defined as: no ground wire) by LCD display module 3 reveal codes " E1 ";
Work as a=1, during b=0, relay EK connects, the electric heater operate as normal;
Work as a=0, during b=1, relay EK connects, and buzzer warning module 4 is reported to the police and (E2 is defined as: the L/N reversal connection) by LCD display module 3 reveal codes " E2 ";
Work as a=1, during b=1, relay K E keeps disconnecting, and buzzer warning module (4) is reported to the police and (E3 is defined as: ground wire electrification) by LCD display module 3 reveal codes " E3 ";
Simultaneously MCU control centre to put the receiving terminal EL-T of leakage current detection module X1 (circuit diagram as shown in Figure 4) 1 (circuit diagram as shown in Figure 5) by force be high level, mutual inductor among the leakage current detection module X1 produces mutual voltage, testing circuit by leakage current detection module X1 makes output EL-D produce level signal: if output EL-D produces high level, then leakage current detection module X1 works well, and proceeds to detect and judges; If output EL-D produces low level, then leakage current detection module X2 is unusual, and (E4 is defined as MCU control centre 1 control LCD display module 3 reveal codes " E4 ": the detection of electrical leakage system exception).
Two, heated condition detection of electrical leakage
After water heater was judged through the detection of power-up initializing, the water heater incoming line was normal at holding state, and checkout gear is normal, just can guarantee at the detection signal of water heater heated condition correct.In heating process, detection system is to comparing between phase line L and the ground wire E and between zero line N and the ground wire E equally, and to the leakage current condition monitoring of phase line L and zero line N.
At first, logical holding state is the same in heating process, the leakage current detection module can detect judgement always (can realize the self check to detection system on the one hand, can detect the phase line L that passes current transformer and the state of zero line N on the other hand), the receiving terminal EL-T that MCU control centre the last 1 put leakage current detection module X1 is a low level, when passing the lead electric leakage of mutual inductor, mutual inductor can be responded to the corresponding voltage of generation, testing circuit by leakage current detection module X1 makes output EL-D produce corresponding level signal: when output EL-D is low level, input power cord is normal, returns to proceed to detect and judges; When output EL-D is high level, the input power cord electric leakage, (E5 is defined as MCU control centre 1 control LCD display module 3 reveal codes " E5 ": the input power cord electric leakage);
Secondly, in heating process to detecting in real time between zero line N and the ground wire E, when the electrical leakage voltage detected value b=0 between zero line N and the ground wire E, relay EK keeps disconnecting, and 4 buzzings of buzzer warning module are reported to the police and by LCD display module 3 reveal codes " E6 " (E6 is defined as: distribution is unusual); When the electrical leakage voltage detected value b=1 between zero line N and the ground wire E, system will carry out the relay EK that force disconnect connects ground wire, carry out described a once more, the contrast of b value is judged, phase line during with holding state-ground wire electrical leakage voltage detection module X2 output level value, and the judgement of the level value of zero line-ground wire electrical leakage voltage detection module X3 output is identical, work as a=0, during b=1, relay EK connects, and buzzer warning module 4 is reported to the police and (E2 is defined as: the L/N reversal connection) by LCD display module 3 reveal codes " E2 "; Work as a=1, during b=1, relay K E keeps disconnecting, and buzzer warning module 4 is reported to the police and (E3 is defined as: ground wire electrification) by LCD display module 3 reveal codes " E3 "; Thereby better detect water heater electric leakage situation and protect immediately.
To sum up, the shown code definition intersection of LCD display module 3 is as follows:
E1: no ground wire;
The E2:L/N reversal connection;
E3: ground wire electrification;
E4: detection of electrical leakage system exception;
E5: input power cord electric leakage;
E6: distribution is unusual.
Claims (5)
1. intelligent detection and protection apparatus for leakage; it is characterized in that: comprise MCU control centre (1); intelligence detection of electrical leakage module (2); LCD display module (3) and buzzer warning module (4); described intelligent detection of electrical leakage module (2) is by leakage current detection module (X1); phase line-ground wire electrical leakage voltage detection module (X2) and zero line-ground wire electrical leakage voltage detection module (X3) is formed; described phase line-ground wire electrical leakage voltage detection module (X2) detects the voltage condition between phase line (L) and ground wire (E) and is messaging in MCU control centre (1); described zero line-ground wire electrical leakage voltage detection module (X3) detects the voltage condition between zero line (N) and ground wire (E) and is messaging in MCU control centre (1); described MCU control centre (1) the described leakage current detection module of control (X1) running; this leakage current detection module (X1) detects the leakage current state of described phase line and zero line and is messaging in MCU control centre (1); described ground wire is provided with a relay (EK); be provided with control chip in the described MCU control centre (1); programming has control program in this control chip, and described MCU control centre (1) controls the break-make that described LCD display module (3) and buzzer warning module (4) operated and controlled described relay (EK) respectively to should control program pressing the information that is received.
2. intelligent detection and protection apparatus for leakage according to claim 1, it is characterized in that: described phase line-ground wire electrical leakage voltage detection module (X2) detects the voltage condition between phase line (L) and ground wire (E) and is messaging in MCU control centre (1): be provided with comparison circuit in described phase line-ground wire electrical leakage voltage detection module (X2), phase line when voltage is less than 24V between phase line (L) and ground wire (E)-ground wire electrical leakage voltage detection module (X2) carries low level in MCU control centre (1), and phase line when voltage is more than or equal to 24V between phase line (L) and ground wire (E)-ground wire electrical leakage voltage detection module (X2) carries high level in MCU control centre (1); Described zero line-ground wire electrical leakage voltage detection module (X3) detects the voltage condition between zero line and ground wire and is messaging in MCU control centre (1): be provided with comparison circuit in described zero line-ground wire electrical leakage voltage detection module (X3), zero line when voltage is less than 24V between zero line (N) and ground wire (E)-ground wire electrical leakage voltage detection module (X3) carries low level in MCU control centre (1), and zero line when voltage is greater than 24V between zero line (N) and ground wire (E)-ground wire electrical leakage voltage detection module (X3) carries high level in MCU control centre (1).
3. intelligent detection and protection apparatus for leakage according to claim 1 and 2; it is characterized in that: described phase line-ground wire electrical leakage voltage detection module (X2) is connected mains-supplied with zero line-ground wire electrical leakage voltage detection module (X3) by the tripod electrical socket; be provided with a direct current power module (5), this DC power supplier (5) conversion civil power is direct current and is powered at described MCU control centre (1).
4. intelligent detection and protection apparatus for leakage according to claim 1; it is characterized in that: the signal end that described leakage current detection module (X1) is controlled by described MCU control centre (1) is that receiving terminal (EL-T) and its signal end that is messaging in MCU control centre (1) are output (EL-D); described MCU control centre (1) puts the receiving terminal (EL-T) of high or low level signal in leakage current detection module (X1) by force by control program, and this is put by force and forms high or low level behind signal detects described phase line and zero line through the leakage current detection module the leakage current state and be delivered to MCU control centre (1) in the output (EL-D) of leakage current detection module (X1).
5. intelligent detection and protection apparatus for leakage according to claim 1 is characterized in that: described LCD display module (3) shows two codes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201586915U CN201682260U (en) | 2010-04-03 | 2010-04-03 | Intelligent electric leakage detection protector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201586915U CN201682260U (en) | 2010-04-03 | 2010-04-03 | Intelligent electric leakage detection protector |
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| CN201682260U true CN201682260U (en) | 2010-12-22 |
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| CN2010201586915U Expired - Fee Related CN201682260U (en) | 2010-04-03 | 2010-04-03 | Intelligent electric leakage detection protector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214910A (en) * | 2010-04-03 | 2011-10-12 | 樱花卫厨（中国）股份有限公司 | Intelligent electric leakage detection protecting device |
| CN102539991A (en) * | 2010-12-31 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Electricity leakage alarming device |
| CN103187706A (en) * | 2011-12-28 | 2013-07-03 | 樱花卫厨（中国）股份有限公司 | Voltage detection leakage protection device for electric water heater |
| CN103579992A (en) * | 2012-08-01 | 2014-02-12 | 樱花卫厨（中国）股份有限公司 | Voltage type leakage protection power line over-current protection device for electric water heater |
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2010
- 2010-04-03 CN CN2010201586915U patent/CN201682260U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214910A (en) * | 2010-04-03 | 2011-10-12 | 樱花卫厨（中国）股份有限公司 | Intelligent electric leakage detection protecting device |
| CN102214910B (en) * | 2010-04-03 | 2015-10-14 | 樱花卫厨（中国）股份有限公司 | Intelligent electric leakage detection protecting |
| CN102539991A (en) * | 2010-12-31 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Electricity leakage alarming device |
| CN103187706A (en) * | 2011-12-28 | 2013-07-03 | 樱花卫厨（中国）股份有限公司 | Voltage detection leakage protection device for electric water heater |
| CN103187706B (en) * | 2011-12-28 | 2016-05-11 | 樱花卫厨（中国）股份有限公司 | Electrical water heater electric is pressed detection type earth leakage protective device |
| CN103579992A (en) * | 2012-08-01 | 2014-02-12 | 樱花卫厨（中国）股份有限公司 | Voltage type leakage protection power line over-current protection device for electric water heater |
| CN103579992B (en) * | 2012-08-01 | 2016-08-17 | 樱花卫厨（中国）股份有限公司 | Voltage type leakage protection power line over-current protection device for electric heater |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20101222 Termination date: 20140403 |