CN1588733A - General electric proof wall device for monolithic processor controlled bath heater - Google Patents
General electric proof wall device for monolithic processor controlled bath heater Download PDFInfo
- Publication number
- CN1588733A CN1588733A CN 200410069571 CN200410069571A CN1588733A CN 1588733 A CN1588733 A CN 1588733A CN 200410069571 CN200410069571 CN 200410069571 CN 200410069571 A CN200410069571 A CN 200410069571A CN 1588733 A CN1588733 A CN 1588733A
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- China
- Prior art keywords
- ground wire
- processing unit
- central processing
- potential difference
- zero line
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Abstract
This invention relates to shock-proof device controlled by one-chip computer for bath equipment. It is characterized by being sequentially connected zero line/earthing wire electric potential difference detector, central processor and relay actuating circuit. Its main characteristic is a transformer, or RC voltage-dropping circuit is connected, by switch tube, to I/O terminals of one-chip computer. Said computer receives potential difference between earthing wire and zero line. When potential is detected with earthing wire, realtime cutting-off of earthing wire and electric power line is realized.
Description
Anti-electric wall technology when technical field the invention belongs to microchip technology field and is particularly related to super bath ground wire and basic insulation and lost efficacy simultaneously.
Background technology is well-known, and it must be reliably that the super bath product standard requires the ground connection in the user family, and the standard plug that the band ground wire also is housed in its product is for linking to each other good with assurance ground connection with ground wire in the socket.And in China, power utilization environment is poor, and the ground connection of many buildings is insecure, or even lack.In this case, qualified super bath can not guarantee user's safety.The anti-electric wall technology that the invention relates to is special in China's actual conditions, is intended to guarantee under unsafe power utilization environment user's safety.And before the invention applying date, super bath does not have the personal safety protector that cut off ground wire and super bath power supply when ground wire and basic insulation lost efficacy simultaneously in real time, brings potential safety hazard for the user who does not have good earth.
The purpose of summary of the invention the invention is exactly to overcome the shortcoming that the above-mentioned prior art of super bath exists, providing a kind of had when this super bath ground wire and basic insulation lost efficacy simultaneously, can cut off the power supply of ground wire and super bath in real time, even under dangerous power utilization environment, also can guarantee user's safety.The relay circuit of the invention guarantees that simultaneously super bath recovers or do not influence normal use when ground wire is not charged.
The invention solves the technical scheme that its technical problem adopts: the invention is provided with cross-over connection in ground wire E
INAnd the potential difference detecting device between zero line N (1), this device provides ground wire normal or charged logical signal to central processing unit (2) I/O input port, and central processing unit (2) is by the break-make of I/O output port control relay executive circuit.Relay executive circuit (3) is by drive circuit Q
1, Q
2And relay J
1, J
2Form, be serially connected with ground wire E respectively at its normally-closed contact, normally opened contact
IN, E
OUTAnd super bath power supply L
IN, L
OUTRelay executive circuit (3) is controlled by central processing unit (2), cuts off being serially connected in relay J when ground wire electrification
1, J
2Ground wire and super bath power supply.Under normal circumstances, the relay normally-closed contact is guaranteed ground wire E
IN, E
OUTAnd super bath power supply L
IN, L
OUTConnection.
The advantage of the invention is simple in structure, and highly versatile is suitable for all kinds of super baths and installs, and effect is obvious, does not influence the use under the ground wire normal condition, its central processing unit also can with super bath single chip machine controlling circuit shared resource.
Description of drawings Fig. 1 is the circuit structure block diagram of the invention.Wherein (1) is that zero grounding potential difference detector set (2) is central processing unit, and (3) carry out super bath for relay.
Fig. 2 is the electrical schematic diagram of the invention.E among the figure
INBe ground wire end of incoming cables, E
OUTBe the ground wire leading-out terminal, promptly link to each other with the super bath earth terminal; L
INBe live wire end of incoming cables, L
OUTBe the live wire leading-out terminal, promptly link to each other with super bath live wire end; N is a zero line, and 12V is the 12V DC power supply.
Embodiment the invention embodiment central processing unit adopts PIC16C54 (PIC16C57) chip microprocessor able to programme, and as previously mentioned, this chip microprocessor can be shared with the single chip machine controlling circuit of super bath.Cross-over connection is in zero line N and ground wire E
INBetween potential difference detecting device by transformer T or resistance-capacitance circuit R
1C
1(among Fig. 2 shown in the dotted line) step-down, D
1～D
4Diode rectification, capacitor C
0, voltage-stabiliser tube the DW voltage stabilizing circuit and the switching tube Q that form
0Form switching tube Q
0Be connected in central processing unit I/O input port, I/O output port control relay executive circuit Q
1, Q
2, J
1, J
2The relay normally-closed contact connects ground wire E
INAnd E
OUT, normally opened contact connects super bath L
INAnd L
OUT
Operation principle summary: super bath under the situation that ground connection and basic insulation lost efficacy simultaneously, zero line N and ground wire E
INBetween voltage between 36V-220V, cross-over connection is in zero line N and ground wire E
INOn transformer reduction voltage circuit or resistance-capacitance depressurization circuit produce the 1.5-6V dc pulse voltage by rectification circuit, make switching tube Q
0Conducting is to central processing unit output low level signal.Q in the relay executive circuit
1, Q
2Be respectively J
1, J
2Drive circuit.When the I/O output makes Q
1Or Q
2During for low level, the actuating of relay disconnects the ground wire E that is connected on its normally-closed contact
INAnd E
OUTAnd the L of normally opened contact (being normally-closed contact during work)
INAnd L
OUT
Claims (4)
1, a kind of electricity-preventing wall device of monolithic processor controlled bath heater, its principal character is the potential difference detecting device (1) that is provided with between cross-over connection ground wire E and zero line N, this device provides potential difference signal between ground wire and zero line to central processing unit (2) I/O input port, central processing unit (2) cuts off the ground wire E that is connected on the relay normally-closed contact in real time by the break-make of I/O output port control relay executive circuit (3) when ground wire electrification
OUTAnd the power supply L of super bath
OUT
2, the electricity-preventing wall device of monolithic processor controlled bath heater according to claim 1 is characterized in that cross-over connection is in zero line N and ground wire E
INBetween potential difference detecting device (1) by transformer T or resistance-capacitance circuit R
1C
1Step-down, D
1～D
4Diode rectification, capacitor C
0, voltage-stabiliser tube the DW voltage stabilizing circuit and the switching tube Q that form
0Form switching tube Q when ground wire electrification
0Provide logical signal (present embodiment is a low level) to central processing unit (2) I/O input port.
3, the electricity-preventing wall device of monolithic processor controlled bath heater according to claim 1 is characterized in that (a) central processing unit (2) is a programmable microprocessor; (b) zero line N and ground wire E
INBetween potential difference detecting device (1) output signal connect the I/O input port of central processing unit (2); (c) switching tube Q in the relay executive circuit (3)
1, Q
2The I/O output port that is controlled by central processing unit (2), relay J
1, J
2Be controlled by switching tube Q
1, Q
2And control the break-make of ground wire and super bath power supply respectively.
4, the electricity-preventing wall device of monolithic processor controlled bath heater according to claim 1, it is characterized in that described central processing unit (2) can be provided with separately also can with the central processing unit shared resource in the super bath control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410069571 CN1588733A (en) | 2004-07-18 | 2004-07-18 | General electric proof wall device for monolithic processor controlled bath heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410069571 CN1588733A (en) | 2004-07-18 | 2004-07-18 | General electric proof wall device for monolithic processor controlled bath heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1588733A true CN1588733A (en) | 2005-03-02 |
Family
ID=34604373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410069571 Pending CN1588733A (en) | 2004-07-18 | 2004-07-18 | General electric proof wall device for monolithic processor controlled bath heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1588733A (en) |
-
2004
- 2004-07-18 CN CN 200410069571 patent/CN1588733A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |