CN205429685U - Rivers sensor butt joint circuit - Google Patents
Rivers sensor butt joint circuit Download PDFInfo
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- CN205429685U CN205429685U CN201620206770.6U CN201620206770U CN205429685U CN 205429685 U CN205429685 U CN 205429685U CN 201620206770 U CN201620206770 U CN 201620206770U CN 205429685 U CN205429685 U CN 205429685U
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- water flow
- sensing unit
- optocoupler
- flow sensing
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Abstract
The utility model discloses a rivers sensor butt joint circuit, earth -leakage protector have the singlechip output control, still including keeping apart output control, power input, reverse isolation circuit, charging current regulating circuit, optocoupler drive circuit, pulse converting circuit, battery and rivers sensor, the rivers sensor carries out electrical connection with pulse converting circuit, keeps apart the output control and is controlled by optocoupler drive circuit, the singlechip output control is controlled by the isolation output control, optocoupler drive circuit is controlled by pulse converting circuit, power input, rectification voltage stabilizing circuit, reverse isolation buffer circuit and charging current regulating circuit connect gradually, and the charging current regulating circuit is that battery, pulse converting circuit and optocoupler drive circuit supply power. The utility model discloses a rivers sensor during operation, the automatic trip protections of earth -leakage protector, on the contrary then the automatic electricity of going up carries out work, has possessed the ability of water conservation on the water heater, and it is safer to make the water heater use.
Description
Technical field
This utility model relates to electrical safety field, particularly relates 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 the most 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 utility model 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！
Utility model content
(1) to solve the technical problem that
The purpose of this utility model seeks 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; water flow sensing unit of the present utility model 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 regulation circuit, optocoupler drive circuit, pulse conversion circuit, battery and water flow sensing unit；Described water flow sensing unit is electrically connected with pulse conversion circuit, 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 regulation circuit are sequentially connected with, and charging current regulation circuit is that battery, pulse conversion circuit and optocoupler drive circuit are powered.
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 works, 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, the technical solution of the utility model 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, played the defencive function of water outlet power-off by earth leakage protective device；3 is low to when X1 optocoupler cannot be made to turn on when cell voltage, and optocoupler cut-off, tripping operation is cut off load power source by earth leakage protective device；4 batteries are normal, and when water flow sensing unit does not works, during the conducting of X1 optocoupler, output low level, earth leakage protective device will power on automatically, recovers load supplying output；5 low-voltage variation type water flow sensing units are to connect automatically to power on to connection circuit, automatically power off earth leakage protective device product and use.
Accompanying drawing explanation
Fig. 1 is the water flow sensing unit of the present utility model module map to connection circuit；
Fig. 2 is the water flow sensing unit of the present utility model circuit theory schematic diagram to connection circuit；
Fig. 3 is the circuit theory diagrams of this utility model embodiment two；
Fig. 4 is the circuit theory diagrams of this utility model embodiment three；
Fig. 5 is this utility model and water heater mounting structure schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail.Following example are used for illustrating this utility model, but are not limited to scope of the present utility model.
As shown in Figure 1; water flow sensing unit of the present utility model 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 regulation circuit, optocoupler drive circuit, pulse conversion circuit, battery and water flow sensing unit；Described water flow sensing unit is electrically connected with pulse conversion circuit, 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 regulation circuit are sequentially connected with, and charging current regulation circuit is that battery, pulse conversion circuit and optocoupler drive circuit are powered.
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 works, 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, the mounting structure with water heater is shown in Fig. 5.
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 works, 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, and difference is, 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 with implementing an essentially identical difference, and 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 restricted embodiment of the present utility model, and modification that all those skilled in the art are carried out on the basis of flesh and blood of the present utility model or equivalent deformation, all at technology category of the present utility model.
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 that power supply inputs; any one during power supply input is 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 regulation circuit, optocoupler drive circuit, pulse conversion circuit, battery and water flow sensing unit；Described water flow sensing unit is electrically connected with pulse conversion circuit, 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 regulation circuit are sequentially connected with, and charging current regulation circuit is that battery, pulse conversion circuit and optocoupler drive circuit are powered.
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 works, 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 |
|---|---|---|---|
| CN201620206770.6U CN205429685U (en) | 2016-03-17 | 2016-03-17 | Rivers sensor butt joint circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620206770.6U CN205429685U (en) | 2016-03-17 | 2016-03-17 | Rivers sensor butt joint circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205429685U true CN205429685U (en) | 2016-08-03 |
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ID=56520169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620206770.6U Active CN205429685U (en) | 2016-03-17 | 2016-03-17 | Rivers sensor butt joint circuit |
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| Country | Link |
|---|---|
| CN (1) | CN205429685U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680408A (en) * | 2016-03-17 | 2016-06-15 | 余姚市嘉荣电子电器有限公司 | Abutting circuit of water flow sensor |
| CN106711938A (en) * | 2016-12-27 | 2017-05-24 | 余姚市嘉荣电子电器有限公司 | Leakage protector |
-
2016
- 2016-03-17 CN CN201620206770.6U patent/CN205429685U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680408A (en) * | 2016-03-17 | 2016-06-15 | 余姚市嘉荣电子电器有限公司 | Abutting circuit of water flow sensor |
| CN106711938A (en) * | 2016-12-27 | 2017-05-24 | 余姚市嘉荣电子电器有限公司 | Leakage protector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |