CN105680408A - Abutting circuit of water flow sensor - Google Patents
Abutting circuit of water flow sensor Download PDFInfo
- Publication number
- CN105680408A CN105680408A CN201610153604.9A CN201610153604A CN105680408A CN 105680408 A CN105680408 A CN 105680408A CN 201610153604 A CN201610153604 A CN 201610153604A CN 105680408 A CN105680408 A CN 105680408A
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- CN
- China
- Prior art keywords
- circuit
- water flow
- sensing unit
- flow sensing
- optocoupler
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses an abutting circuit of a water flow sensor. The abutting circuit comprises an electric leakage protector and also comprises an isolation output controller, a power supply input, an inversed isolation circuit, a charging current regulation circuit, an optical coupling driving circuit, a pulse conversion circuit, a battery and a water flow sensor, wherein the electric leakage protector is provided with a singlechip microcomputer output controller, the water flow sensor is electrically connected with the pulse conversion circuit, the isolation output controller is controlled by the optical coupling driving circuit, the singlechip microcomputer output controller is controlled by the isolation output controller, the optical coupling driving circuit is controlled by the pulse conversion circuit, the power supply input, a rectification voltage-stabilization circuit, the inversed isolation circuit and the charging current regulation circuit are sequentially connected, and the charging current regulation circuit is used for supplying power to the battery, the pulse conversion circuit and the optical coupling driving circuit. When the water flow sensor is working, the electric leakage protector automatically trips for protection, or otherwise, the electric leakage protector is automatically energized to work; and the abutting circuit has the ability of water feeding protection of a water heater, and the water is safer to use.
Description
Technical field
The present invention relates to electrical safety field, particularly relate to a kind of water flow sensing unit to connection circuit.
Background technology
The water heater electric leakage protector of prior art lacks current protection system, that is, when water heater is in heated condition, leakage protecting plug is thrown away so in running order, if demand uses hot water under this state, earth leakage protective device is in passive protection state (that is: can protect after producing electric leakage behavior), once there be leakage current to pass through human body under this pattern, earth leakage protective device can be protected. but because the body constitution difference of environment and people can cause electric shock intensity different, electric shock behavior cannot be avoided, this phenomenon has potential potential safety hazard. for solving above-mentioned passive electrical shock protection behavior, the present invention proposes: water outlet power-off water flow sensing unit is to connection circuit, this circuit can realize water outlet power down function, it is that truly water power isolation controls. thoroughly solve the potential safety hazard in use!
Summary of the invention
(1) to solve the technical problem that
Present invention aim to overcome disadvantages mentioned above, it is desirable to provide a kind of water flow sensing unit is to connection circuit.
(2) technical scheme
For reaching above-mentioned purpose, the water flow sensing unit of the present invention is to connection circuit, including earth leakage protective device, earth leakage protective device has single-chip microcomputer output and controls, power supply is powered by transformator or Switching Power Supply or external power supply, also includes isolation and amplifier control, power supply input, reverse isolation circuit, charging current adjustment circuit, optocoupler drive circuit, pulse conversion circuit, battery and water flow sensing unit; Described water flow sensing unit and pulse conversion circuit are electrically connected, and described isolation and amplifier controls to be controlled by optocoupler drive circuit; Single-chip microcomputer output control is controlled by isolation and amplifier control; Described optocoupler drive circuit is controlled by pulse conversion circuit; Described power supply input, regulator rectifier circuit, reverse isolation circuit and charging current regulate circuit and are sequentially connected with, and it is that battery, pulse conversion circuit and optocoupler drive circuit are powered that charging current regulates circuit.
Further; described earth leakage protective device also includes automatic power-up/down control circuit and power-up/down drive circuit; the output control of described single-chip microcomputer, automatic power-up/down control circuit and power-up/down drive circuit are sequentially connected with, and power-up/down drive circuit is used for controlling electrical apparatus release.
Further, described pulse conversion circuit includes audion Q1, resistance R1 and resistance R2; Described optocoupler drive circuit includes resistance R3 and audion Q2; Described isolation and amplifier controls to include optocoupler X1; Described audion Q2 base stage passes through resistance R1 connecting triode Q1, and is controlled by audion Q1; The input connecting triode Q2 emitter stage of described optocoupler X1, and it is controlled by audion Q2; Described optocoupler X1 outfan is for the break-make of control single chip computer logic control.
Further, the electric capacity C1 being connected between water flow sensing unit and audion Q1 base stage is also included.
Further, when water flow sensing unit does not work, audion Q1 and Q2 is turned off, and optocoupler X1 ends, and earth leakage protective device powers on automatically.
Further, when water flow sensing unit works, audion Q1 and Q2 is both turned on, and optocoupler X1 turns on, and earth leakage protective device automatic trip is protected.
Further, described power supply enters through that external power supply is powered, transformer frequency response is powered or Switching Power Supply is powered.
(3) beneficial effect
Compared with prior art, technical scheme has the advantage that 1, water flow sensing unit battery is powered, automatic trip protection during dead battery; During 2 water flow sensing unit work, X1 optocoupler will continue output pulse signal, and tripping operation is cut off load power source by earth leakage protective device, plays the defencive function of water outlet power-off; 3 is low to when X1 optocoupler cannot be made to turn on when cell voltage, and optocoupler ends, and earth leakage protective device is by tripping operation cut-out load power source; 4 batteries are normal, when water flow sensing unit does not work, during the conducting of X1 optocoupler, and output low level, earth leakage protective device will power on automatically, recovers load supplying output; Connection circuit is connect automatically to power on by 5 low-voltage variation type water flow sensing units, automatically powers off earth leakage protective device product and uses.
Accompanying drawing explanation
Fig. 1 is the water flow sensing unit module map to connection circuit of the present invention;
Fig. 2 is the water flow sensing unit circuit theory schematic diagram to connection circuit of the present invention;
Fig. 3 is the circuit theory diagrams of the embodiment of the present invention two;
Fig. 4 is the circuit theory diagrams of the embodiment of the present invention three;
Fig. 5 is the present invention and water heater mounting structure schematic diagram.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail. Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
As shown in Figure 1, the water flow sensing unit of the present invention is to connection circuit, including earth leakage protective device, earth leakage protective device has single-chip microcomputer output and controls, and also includes isolation and amplifier control, power supply input, reverse isolation circuit, charging current adjustment circuit, optocoupler drive circuit, pulse conversion circuit, battery and water flow sensing unit; Described water flow sensing unit and pulse conversion circuit are electrically connected, and described isolation and amplifier controls to be controlled by optocoupler drive circuit; Single-chip microcomputer output control is controlled by isolation and amplifier control; Described optocoupler drive circuit is controlled by pulse conversion circuit; Described power supply input, regulator rectifier circuit, reverse isolation circuit and charging current regulate circuit and are sequentially connected with, and it is that battery, pulse conversion circuit and optocoupler drive circuit are powered that charging current regulates circuit.
Described earth leakage protective device also includes automatic power-up/down control circuit and power-up/down drive circuit; the output control of described single-chip microcomputer, automatic power-up/down control circuit and power-up/down drive circuit are sequentially connected with, and power-up/down drive circuit is used for controlling electrical apparatus release.
Circuit theory diagrams are as in figure 2 it is shown, described pulse conversion circuit includes audion Q1, resistance R1 and resistance R2;Described optocoupler drive circuit includes resistance R3 and audion Q2; Described isolation and amplifier controls to include optocoupler X1; Described audion Q2 base stage passes through resistance R1 connecting triode Q1, and is controlled by audion Q1; The input connecting triode Q2 emitter stage of described optocoupler X1, and it is controlled by audion Q2; Described optocoupler X1 outfan is for the break-make of control single chip computer logic control.
Also include the electric capacity C1 being connected between water flow sensing unit and audion Q1 base stage.
When water flow sensing unit does not work, audion Q1 and Q2 is turned off, and optocoupler X1 ends, and earth leakage protective device powers on automatically.
When water flow sensing unit works, audion Q1 and Q2 is both turned on, and optocoupler X1 turns on, and earth leakage protective device automatic trip is protected.
Described power supply enters through that external power supply is powered, transformer frequency response is powered or Switching Power Supply is powered.
Wherein, Fig. 5 is seen with the mounting structure of water heater.
Operation principle is as follows:
1.X1 optocoupler ends
When battery BT1 brownout, pulse signal or Q3 deficiency, so that Q2 conducting, cause X1 to be not turned on, and make X1 output cut-off, optocoupler output high level, earth leakage protective device trip protection;
2.X1 optocoupler pulse exports
During external water flow sensing unit output pulse signal high level, high level makes Q1 turn on through C1, and Q3 ends, Q2 ends, optocoupler ends, and when pulse is low level, Q1 ends, Q3 turns on, Q2 turns on, and X1 optocoupler turns on, along with stream impulse constantly exports, X1 synchronizes conducting and forms output of pulse signal, earth leakage protective device trip protection with cut-off;
3.X1 optocoupler turns on
When water flow sensing unit does not work, Q1 ends, and Q3 turns on, and Q2 turns on, and X1 turns on, and optocoupler output low level, earth leakage protective device powers on automatically, and load switches on power.
Embodiment two
The present embodiment is essentially identical with enforcement one, is different in that, powering with transformer frequency response replaces external power supply to power. Physical circuit schematic diagram is as shown in Figure 3.
Embodiment three
The present embodiment is essentially identical with enforcement one to be different in that, powering by Switching Power Supply replaces external power supply to power. Physical circuit schematic diagram is as shown in Figure 4.
In sum, above-mentioned embodiment is not the restricted embodiment of the present invention, modification that all those skilled in the art carry out on the basis of the flesh and blood of the present invention or equivalent deformation, all at the technology category of the present invention.
Claims (7)
1. a water flow sensing unit is to connection circuit, including earth leakage protective device, earth leakage protective device has single-chip microcomputer output and controls, also include power supply input, the any one that power supply inputs in being powered by transformator, Switching Power Supply, external power supply is powered, it is characterised in that: also include isolation and amplifier control, reverse isolation circuit, charging current adjustment circuit, optocoupler drive circuit, pulse conversion circuit, battery and water flow sensing unit; Described water flow sensing unit and pulse conversion circuit are electrically connected, and described isolation and amplifier controls to be controlled by optocoupler drive circuit; Single-chip microcomputer output control is controlled by isolation and amplifier control; Described optocoupler drive circuit is controlled by pulse conversion circuit; Described power supply input, regulator rectifier circuit, reverse isolation circuit and charging current regulate circuit and are sequentially connected with, and it is that battery, pulse conversion circuit and optocoupler drive circuit are powered that charging current regulates circuit.
2. water flow sensing unit as claimed in claim 1 is to connection circuit; it is characterized in that: described earth leakage protective device also includes automatic power-up/down control circuit and power-up/down drive circuit; the output control of described single-chip microcomputer, automatic power-up/down control circuit and power-up/down drive circuit are sequentially connected with, and power-up/down drive circuit is used for controlling electrical apparatus release.
3. water flow sensing unit as claimed in claim 2 is to connection circuit, it is characterised in that: described pulse conversion circuit includes audion Q1, resistance R1 and resistance R2; Described optocoupler drive circuit includes resistance R3 and audion Q2; Described isolation and amplifier controls to include optocoupler X1; Described audion Q2 base stage passes through resistance R1 connecting triode Q1, and is controlled by audion Q1; The input connecting triode Q2 emitter stage of described optocoupler X1, and it is controlled by audion Q2; Described optocoupler X1 outfan is for the break-make of control single chip computer logic control.
4. water flow sensing unit as claimed in claim 3 is to connection circuit, it is characterised in that: also include the electric capacity C1 being connected between water flow sensing unit and audion Q1 base stage.
5. water flow sensing unit as claimed in claim 4 is to connection circuit, it is characterised in that: when water flow sensing unit does not work, audion Q1 and Q2 is turned off, and optocoupler X1 ends, and earth leakage protective device powers on automatically.
6. water flow sensing unit as claimed in claim 5 is to connection circuit, it is characterised in that: when water flow sensing unit works, audion Q1 and Q2 is both turned on, and optocoupler X1 turns on, and earth leakage protective device automatic trip is protected.
7. the water flow sensing unit as described in any one of claim 1-6 is to connection circuit, it is characterised in that: described power supply enters through that external power supply is powered, transformer frequency response is powered or Switching Power Supply is powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610153604.9A CN105680408A (en) | 2016-03-17 | 2016-03-17 | Abutting circuit of water flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610153604.9A CN105680408A (en) | 2016-03-17 | 2016-03-17 | Abutting circuit of water flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105680408A true CN105680408A (en) | 2016-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610153604.9A Pending CN105680408A (en) | 2016-03-17 | 2016-03-17 | Abutting circuit of water flow sensor |
Country Status (1)
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| CN (1) | CN105680408A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972832A (en) * | 2016-07-05 | 2016-09-28 | 广东万家乐燃气具有限公司 | Electric water heater water output power-off control system capable of preventing misoperation |
| CN106058808A (en) * | 2016-07-14 | 2016-10-26 | 余姚市嘉荣电子电器有限公司 | Controllable water outlet outage electric leakage protector |
| CN106207967A (en) * | 2016-08-08 | 2016-12-07 | 余姚市嘉荣电子电器有限公司 | One can put break-make type water outlet power-off leakage non-electricity protector |
| CN106505518A (en) * | 2016-12-27 | 2017-03-15 | 余姚市嘉荣电子电器有限公司 | A kind of earth leakage protective device |
| CN107910851A (en) * | 2017-11-28 | 2018-04-13 | 乐清市诚富电器科技有限公司 | A kind of intelligence self generation type water outlet circuit breaking controlling method |
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| US6768622B2 (en) * | 2000-11-30 | 2004-07-27 | Micrel, Incorporated | Method and apparatus for providing thermal shutdown and current limiting protection |
| CN103472874A (en) * | 2013-09-16 | 2013-12-25 | 东莞市唯成节能科技有限公司 | Instant heating type water temperature adjustment method and device |
| CN103528716A (en) * | 2013-10-30 | 2014-01-22 | 成都市宏山科技有限公司 | High-precision temperature monitoring circuit |
| CN204086432U (en) * | 2014-10-16 | 2015-01-07 | 国家电网公司 | The decision circuit of sensor die analog quantity range of signal |
| CN104868443A (en) * | 2015-05-15 | 2015-08-26 | 余姚市嘉荣电子电器有限公司 | Automatic power-on intelligent-type electric leakage protector |
| CN205429685U (en) * | 2016-03-17 | 2016-08-03 | 余姚市嘉荣电子电器有限公司 | Rivers sensor butt joint circuit |
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2016
- 2016-03-17 CN CN201610153604.9A patent/CN105680408A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6768622B2 (en) * | 2000-11-30 | 2004-07-27 | Micrel, Incorporated | Method and apparatus for providing thermal shutdown and current limiting protection |
| CN103472874A (en) * | 2013-09-16 | 2013-12-25 | 东莞市唯成节能科技有限公司 | Instant heating type water temperature adjustment method and device |
| CN103528716A (en) * | 2013-10-30 | 2014-01-22 | 成都市宏山科技有限公司 | High-precision temperature monitoring circuit |
| CN204086432U (en) * | 2014-10-16 | 2015-01-07 | 国家电网公司 | The decision circuit of sensor die analog quantity range of signal |
| CN104868443A (en) * | 2015-05-15 | 2015-08-26 | 余姚市嘉荣电子电器有限公司 | Automatic power-on intelligent-type electric leakage protector |
| CN205429685U (en) * | 2016-03-17 | 2016-08-03 | 余姚市嘉荣电子电器有限公司 | Rivers sensor butt joint circuit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972832A (en) * | 2016-07-05 | 2016-09-28 | 广东万家乐燃气具有限公司 | Electric water heater water output power-off control system capable of preventing misoperation |
| CN105972832B (en) * | 2016-07-05 | 2021-12-31 | 广东万家乐燃气具有限公司 | Electric water heater water outlet power-off control system capable of preventing misoperation |
| CN106058808A (en) * | 2016-07-14 | 2016-10-26 | 余姚市嘉荣电子电器有限公司 | Controllable water outlet outage electric leakage protector |
| CN106058808B (en) * | 2016-07-14 | 2019-09-17 | 余姚市嘉荣电子电器有限公司 | Controllable type water outlet power-off earth leakage protective device |
| CN106207967A (en) * | 2016-08-08 | 2016-12-07 | 余姚市嘉荣电子电器有限公司 | One can put break-make type water outlet power-off leakage non-electricity protector |
| CN106505518A (en) * | 2016-12-27 | 2017-03-15 | 余姚市嘉荣电子电器有限公司 | A kind of earth leakage protective device |
| CN107910851A (en) * | 2017-11-28 | 2018-04-13 | 乐清市诚富电器科技有限公司 | A kind of intelligence self generation type water outlet circuit breaking controlling method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160615 |
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| RJ01 | Rejection of invention patent application after publication |