CN202616772U - Automatic identification and conversion circuit for alternating current zero and live wires - Google Patents
Automatic identification and conversion circuit for alternating current zero and live wires Download PDFInfo
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- CN202616772U CN202616772U CN 201220167518 CN201220167518U CN202616772U CN 202616772 U CN202616772 U CN 202616772U CN 201220167518 CN201220167518 CN 201220167518 CN 201220167518 U CN201220167518 U CN 201220167518U CN 202616772 U CN202616772 U CN 202616772U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 10
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an alternating current zero live wire automatic identification converting circuit, including induced voltage automatic detection unit, zero live wire automatic identification unit, zero live wire automatic conversion unit, its characterized in that induced voltage automatic detection unit's output is connected with zero live wire automatic identification unit's input, and zero live wire automatic identification unit's output is connected with zero live wire automatic conversion unit's control end. The utility model discloses induced voltage automatic checkout unit transmits the induced voltage who detects the metal pole piece be connected with one of them input of alternating current and rather than producing between the relative metal pole piece to zero live wire automatic identification unit, and zero live wire automatic identification unit carries out zero live wire discernment through comparison induced voltage's size to output the result of discernment zero live wire automatic switching unit and carry out the automatic switching of zero live wire, make the alternating current zero live wire of input keep unanimous. The utility model relates to an ingenious, simple structure, easy to carry out has improved two types of domestic appliance's security reliability.
Description
Technical field
The utility model relates to a kind of interchange electrical zero live wire and discerns change-over circuit automatically.
Background technology
AC power is made up of zero live wire, normally shuts switch just passablely when people change the bulb, and normal switch is to control live wire, if shut the switch zero line that just broken, live wire is still switched on, and at this moment just is easy to cause electric shock accidents; If socket zero live wire connects instead, when appliance plug was plugged, switch cut out back electrical equipment and still switches on, and when electrical equipment has water to drench, just is easy to cause electric shock, opposed that human body has very big harm so zero live wire connects.Simultaneously, the electrical equipment that has has access to requirement and can not connect instead zero live wire, can not reach some function if connect instead, have in addition can produce electrical equipment and endanger.The consuming device that present China is defined as two electric appliances can only use two core plugs, when the plug of consuming device inserts the electrical network socket, just can't confirm whether the access of zero live wire is correct.
Summary of the invention
The purpose of the utility model is to consider the problems referred to above and provides a kind of safe and reliable interchange electrical zero live wire to discern change-over circuit automatically.
The technical scheme of the utility model is: a kind of interchange electrical zero live wire is discerned change-over circuit automatically; Comprise induced voltage automatic detection unit, zero live wire automatic identification unit, the zero automatic converting unit of live wire; The output that it is characterized in that the induced voltage automatic detection unit is connected with the input of zero live wire automatic identification unit, and the output of zero live wire automatic identification unit is connected with the control end of the zero automatic converting unit of live wire.
Said induced voltage automatic detection unit comprises metal pole piece 11, metal pole piece 12, rectifier bridge ZD11 and modulus conversion chip ADC11, resistance R 11, resistance R 12; One of them input of rectifier bridge ZD11 is connected with alternating current input 2 through metal pole piece 11; Another input of rectifier bridge ZD11 is connected with metal pole piece 12; The positive pole of rectifier bridge ZD11 is connected with an end of resistance R 11; The other end of resistance R 11 is connected with the input pin AIN+ of modulus conversion chip ADC11 and is connected with an end of resistance R 12, and the other end of resistance R 12 is connected with the negative pole of rectifier bridge ZD11 and is connected with the input pin AIN-of modulus conversion chip ADC11.
Said zero live wire automatic identification unit comprises induced voltage process chip IC21, triode Q21 and resistance R 21; First, second and third pin of induced voltage process chip IC21 is connected with first, second and third pin of modulus conversion chip ADC11; The 4th pin of induced voltage process chip IC21 is connected with the B utmost point of triode Q21 through resistance R 21; The negative pole of rectifier bridge ZD11 in the E utmost point of triode Q21 and the induced voltage automatic detection unit (1) is connected, and the C utmost point of triode Q21 is connected with the control end of the zero automatic converting unit of live wire (3).
The said zero automatic converting unit of live wire comprises double break double open switch K31; The T1 pin of double break double open switch K31 is connected with direct voltage; The C utmost point of triode Q21 in the T2 pin of double break double open switch K31 and the zero live wire automatic identification unit (2) is connected; The T3 of double break double open switch K31, T6 pin are connected with alternating current input 1 respectively; T4, the T5 pin of double break double open switch K31 are connected with alternating current input 2 respectively, and the T7 of double break double open switch K31, T8 pin are respectively the output of alternating current fire wire, zero line.
Said double break double open switch K31 realizes through the relay of two groups of conversions, or realizes through the solenoid controlled bidirectional switch.
The passing through of the utility model is provided with the structure of the metal pole piece of two unsettled correspondences in electrical equipment; Wherein a metal pole piece is connected with the alternating current input; The induced voltage automatic detection unit detects the induced voltage that produces between the two metal pole pieces; And it is transferred to zero live wire automatic identification unit; Zero live wire automatic identification unit carries out the identification of zero line, live wire through the size of induced voltage relatively, and outputs to the zero automatic converting unit of live wire to the result of identification and carry out the automatic conversion of zero live wire, and the interchange electrical zero live wire of input is consistent.The beneficial effect of the utility model is; Detect induced voltage through the metal pole piece that is connected with the alternating current input is set, judge zero live wire and then accomplish conversion automatically, design ingenious, simple in structure; And ten minutes is easy to implement, has improved the fail safe reliability of two types of household electrical appliance greatly.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the utility model.
Fig. 2 is the circuit theory diagrams of the embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the embodiment of the utility model is described further.
As shown in Figure 1; The utility model exchanges the electrical zero live wire and discerns change-over circuit automatically; Comprise induced voltage automatic detection unit 1, zero live wire automatic identification unit 2, the zero automatic converting unit 3 of live wire; Wherein the output of induced voltage automatic detection unit 1 is connected with the input of zero live wire automatic identification unit 2, and the output of zero live wire automatic identification unit 2 is connected with the control end of the zero automatic converting unit 3 of live wire.
As shown in Figure 2; Said induced voltage automatic detection unit (1) comprises metal pole piece 11, metal pole piece 12, rectifier bridge ZD11 and modulus conversion chip ADC11; Metal pole piece 11 1 ends are connected with the input 2 of alternating current; The other end is connected with the input of rectifier bridge ZD11, and metal pole piece 12 is connected with another input of rectifier bridge ZD11, and the positive pole of rectifier bridge ZD11 is connected with the input pin AIN+ of modulus conversion chip ADC11 through resistance R 11; The negative pole of rectifier bridge ZD11 is connected with the input pin AIN+ of modulus conversion chip ADC11 through resistance R 12, and the negative pole of rectifier bridge ZD11 is connected with the input pin AIN-of modulus conversion chip ADC11.
Described zero live wire automatic identification unit (2) comprises induced voltage process chip IC21, triode Q21 and resistance R 21; First, second and third pin of induced voltage process chip IC21 is connected with first, second and third pin of modulus conversion chip ADC11; The 4th pin of induced voltage process chip IC21 is connected with the B utmost point of triode Q21 through resistance R 21, and the negative pole of the rectifier bridge ZD11 in the E utmost point of triode Q21 and the induced voltage automatic detection unit (1) is connected.
The zero automatic converting unit of live wire (3) comprises double break double open switch K31; The T1 pin of double break double open switch K31 is connected with direct voltage; The C utmost point of triode Q21 in the T2 pin of double break double open switch K31 and the zero live wire automatic identification unit (2) is connected; Alternating current input 1 is connected with T3, the T6 pin of double break double open switch K31 respectively; Ac input end 2 is connected with T4, the T5 pin of double break double open switch K31 respectively, and the T7 of double break double open switch K31, T8 pin are respectively the output of alternating current fire wire, zero line.
Described double break double open switch (K1) can be realized through the relay of two groups of conversions, also can realize through the solenoid controlled bidirectional switch.
The operation principle of the utility model is: during use; Product is connected civil power; The induced voltage automatic detection unit just detects the induced voltage between the metal polar plate of one of them input of connecting civil power and the metal polar plate relative with it; Detected induced voltage is transported to the numerical values recited comparison that zero live wire automatic identification unit carries out induced voltage; Represent that when induced voltage is high detected mains electricity input end is a live wire; Represent then that when induced electricity forces down detected mains electricity input end is a zero line, zero live wire automatic identification unit differentiation finishing back requires to output a control signal to the zero automatic converting unit of live wire according to predefined zero live wire output and carries out the automatic conversion of zero live wire, makes the interchange electrical zero live wire of input meet the setting requirement.
In the present embodiment; The induced voltage of described zero live wire automatic identification unit 2 relatively; Can be that relay through the zero automatic converting unit of live wire switches; Detect alternating current two inputs to comparing with reference to the laggard line number value size of the induced voltage of metal polar plate, what induced voltage was high is live wire, and what induced electricity forced down is zero line; Also can in the induced voltage process chip of zero live wire automatic identification unit, set a reference value; Compare detected induced voltage from the induced voltage automatic detection unit and this reference value; Induced voltage is a live wire greater than this reference value, and induced voltage is a zero line less than this reference value.
Claims (5)
1. an interchange electrical zero live wire is discerned change-over circuit automatically; It is characterized in that comprising induced voltage automatic detection unit (1), zero live wire automatic identification unit (2) and the zero automatic converting unit of live wire (3); The output of induced voltage automatic detection unit (1) is connected with the input of zero live wire automatic identification unit (2), and the output of zero live wire automatic identification unit (2) is connected with the control end of the zero automatic converting unit of live wire (3).
2. interchange electrical zero live wire according to claim 1 is discerned change-over circuit automatically; It is characterized in that said induced voltage automatic detection unit (1) comprises metal pole piece 11, metal pole piece 12, rectifier bridge ZD11 and modulus conversion chip ADC11, resistance R 11, resistance R 12; One of them input of rectifier bridge ZD11 is connected with alternating current input 2 through metal pole piece 11; Another input of rectifier bridge ZD11 is connected with metal pole piece 12; The positive pole of rectifier bridge ZD11 is connected with an end of resistance R 11; The other end of resistance R 11 is connected with the input pin AIN+ of modulus conversion chip ADC11 and is connected with an end of resistance R 12, and the other end of resistance R 12 is connected with the negative pole of rectifier bridge ZD11 and is connected with the input pin AIN-of modulus conversion chip ADC11.
3. interchange electrical zero live wire according to claim 2 is discerned change-over circuit automatically; It is characterized in that said zero live wire automatic identification unit (2) comprises induced voltage process chip IC21, triode Q21 and resistance R 21; First, second and third pin of induced voltage process chip IC21 is connected with first, second and third pin of modulus conversion chip ADC11; The 4th pin of induced voltage process chip IC21 is connected with the B utmost point of triode Q21 through resistance R 21; The negative pole of rectifier bridge ZD11 in the E utmost point of triode Q21 and the induced voltage automatic detection unit (1) is connected, and the C utmost point of triode Q21 is connected with the control end of the zero automatic converting unit of live wire (3).
4. interchange electrical zero live wire according to claim 3 is discerned change-over circuit automatically; It is characterized in that the said zero automatic converting unit of live wire (3) comprises double break double open switch K31; The T1 pin of double break double open switch K31 is connected with direct voltage; The C utmost point of triode Q21 in the T2 pin of double break double open switch K31 and the zero live wire automatic identification unit (2) is connected; T3, the T6 pin of double break double open switch K31 are connected with alternating current input 1 respectively, and T4, the T5 pin of double break double open switch K31 are connected with alternating current input 2 respectively, and the T7 of double break double open switch K31, T8 pin are respectively the output of alternating current fire wire, zero line.
5. interchange electrical zero live wire according to claim 4 is discerned change-over circuit automatically, it is characterized in that said double break double open switch K31 realizes through the relay of two groups of conversions, or realizes through the solenoid controlled bidirectional switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220167518 CN202616772U (en) | 2012-04-19 | 2012-04-19 | Automatic identification and conversion circuit for alternating current zero and live wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220167518 CN202616772U (en) | 2012-04-19 | 2012-04-19 | Automatic identification and conversion circuit for alternating current zero and live wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202616772U true CN202616772U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220167518 Expired - Lifetime CN202616772U (en) | 2012-04-19 | 2012-04-19 | Automatic identification and conversion circuit for alternating current zero and live wires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202616772U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102655323A (en) * | 2012-04-19 | 2012-09-05 | 美的集团有限公司 | Automatic identification and conversion circuit for alternating current zero and live wires |
| CN107086558A (en) * | 2017-05-31 | 2017-08-22 | 徐州百可得电器有限公司 | A kind of electronic circuit of self-identifying zero line |
-
2012
- 2012-04-19 CN CN 201220167518 patent/CN202616772U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102655323A (en) * | 2012-04-19 | 2012-09-05 | 美的集团有限公司 | Automatic identification and conversion circuit for alternating current zero and live wires |
| CN102655323B (en) * | 2012-04-19 | 2017-09-29 | 美的集团股份有限公司 | A kind of live wire automatic identification change-over circuit of alternating current zero |
| CN107086558A (en) * | 2017-05-31 | 2017-08-22 | 徐州百可得电器有限公司 | A kind of electronic circuit of self-identifying zero line |
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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 |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
|
| CP03 | Change of name, title or address |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Patentee before: Midea Group |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121219 Effective date of abandoning: 20170908 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20121219 Effective date of abandoning: 20170908 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121219 Effective date of abandoning: 20170929 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121219 Effective date of abandoning: 20170929 |