CN2924930Y - Micr power consumption infrared sensor switch - Google Patents
Micr power consumption infrared sensor switch Download PDFInfo
- Publication number
- CN2924930Y CN2924930Y CN 200620118433 CN200620118433U CN2924930Y CN 2924930 Y CN2924930 Y CN 2924930Y CN 200620118433 CN200620118433 CN 200620118433 CN 200620118433 U CN200620118433 U CN 200620118433U CN 2924930 Y CN2924930 Y CN 2924930Y
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Abstract
The utility model relates to an infrared induction switch with low power consumption, which comprises a load detecting circuit, a magnetic latching relay, a drive circuit, a power supply circuit, a control circuit of the transient current, an occurring circuit of the drive signals, a inductive control circuit with chips of a microcontroller and rechargeable batteries, wherein, the control circuit of the transient current and the occurring circuit of the drive signals ensure that the switch can be turned on manually when the batteries entering into over-releasing protection caused by closing the switch for a long time. When the switch is turned on, the microcontroller controls the operate mode of batteries according to the checking voltage from the load-detecting circuit, as long as the power circuit of the batteries is under saturation or in a state of charging up. The voltage drop of switch conducting is no more than 2V, which can realize low power consumption of the induction switch, increase the large power load with strong load applicability, and can be applied to various loads such as daylight lamps, energy-saving lamp, incandescent lamps and ventilating fans.
Description
Technical field
The utility model relates to a kind of induction-type wall switch, and particularly a kind of little power consumption infrared inductive switch is used for the switch control of the light fixture or the electrical equipment of family and public place.
Background technology
Mostly induction-type wall switch of the prior art is to adopt controllable silicon, common electrical magnetic relay or magnetic latching relay to drive loaded work piece as driving element, and controllable silicon damages when driving such as inductive loads such as Inductive ballast formula fluorescent lamp, electricity-saving lamp, ventilating fans easily.Because the desired heat dissipation problem of controllable silicon is restricted its bringing onto load power.The silicon controlled conduction voltage drop is bigger, and the switch conduction pressure drop that has is restricted its application up to 20V.And the electronic switch that adopts the common electrical magnetic relay needs add at coil after the adhesive of contact and keeps electric current, and power consumption is bigger.Application (patent) number is that little power consumption soft-touch control of 02280334.3 and application (patent) number are that little power consumption inductive switch of 02280333.5 adopts magnetic latching relay to drive loaded work piece as driving element to have solved the problems referred to above, but its power circuit can't be to battery charge under the switch open state, can only after cutting out, switch charge, scintillation can take place in light fixture when load is electricity-saving lamp or fluorescent lamp, adopted in the method for parallel connection Resistor-Capacitor Unit in load two ends in order not make the light fixture flicker as coad connector, this has just increased installation difficulty, makes it be difficult to promote.
Summary of the invention
The purpose of this utility model is to provide a kind of little power consumption infrared inductive switch; employing have overcharge, the power supply of the lithium polymer secondary battery of over-discharge protection circuit; under the state of switch open, battery is charged; as long as reaching capacity, switch open and battery just can not carry out large current charge to battery; guaranteed that switch can work steady in a long-term; cause battery to enter even if switch is not opened for a long time and put guard mode; also can adopt the mode of manual palpation to open switch, battery enters state of activation recovery operate as normal afterwards.When cutting out, switch, solves the problem of battery charge and load light fixture flicker effectively not to battery charge.
The technical solution of the utility model is: a kind of little power consumption infrared inductive switch, it is characterized in that: a circuit board assemblies and a lithium polymer secondary battery are installed in switch case, and circuit board assemblies comprises load detecting circuit, magnetic latching relay, drive circuit of magnetic latching relay, power circuit, transient current control circuit, drive signal generation circuit and has the infrared induction control circuit of microcontroller chip.The coil of magnetic latching relay is connected with drive circuit of magnetic latching relay; The input port of inductive control circuit is connected with load detecting circuit, output port is connected with drive circuit of magnetic latching relay and control Driver Circuit drives the magnetic latching relay opening and closing, and output port also links to each other with the Current Control input port of transient current control circuit and provides drive signal for it; Transient current control circuit and drive signal generation circuit are connected with drive circuit of magnetic latching relay and provide electric energy and drive signal for it.Power circuit is connected with lithium polymer secondary battery, infrared induction control circuit and drive circuit of magnetic latching relay and provides electric energy to it.
The utility model compared with prior art has the following advantages:
Switch under opening to battery trickle charge, as long as reaching capacity, switch open and battery just can not carry out large current charge to battery, can change the working method of power circuit according to load size, when having solved electronic switch effectively, guarantee the work energy abundance of battery in the power device heating problem again in heavy load; Do not cause battery to enter to put guard mode, also can adopt the mode of manual palpation to open switch even if do not open for a long time by transient current control circuit switch, battery enters state of activation and recovers operate as normal afterwards; Load light fixture flicker free phenomenon, workload-adaptability is strong, can be with various loads such as fluorescent lamp, incandescent lamp, electricity-saving lamp and ventilating fan.
Description of drawings
Accompanying drawing 1 is a circuit theory schematic diagram of the present utility model;
Accompanying drawing 2 is power circuit principle schematic diagrames of the present utility model;
Accompanying drawing 3 is the principle schematic after the utility model power circuit adds city's power detection circuit.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Referring to accompanying drawing one, A is a load detecting circuit, and B is a power circuit, C is the infrared induction control circuit, and D is the transient current control circuit, and E is a drive signal generation circuit, F1 is a drive circuit of magnetic latching relay, and BT is the chargeable lithium ion polymer battery, and RL is a magnetic latching relay.Load detecting circuit A inside comprises current transformer, rectification and filter circuit, and the circuit conversion bearing power is the correspondent voltage value and gives microcontroller chip in the C by output port VAD.There are a microcontroller chip, fired infra-red component and receiving element, touch key-press in infrared induction control circuit C inside, fired infra-red component is launched the infrared signal of certain frequency when staff stretches to switch, after staff reflection, received and send and be input to microcontroller chip, send control commands corresponding by microcontroller chip by infrared receiver component.A, C are prior art, in this few description.
The contact of magnetic latching relay RL is connected on control switch opening and closing in the ac circuit, and the dc output end VCC of power circuit B links to each other with the power input of infrared induction control circuit C and drive circuit of magnetic latching relay F1 respectively; The input port of infrared induction control circuit links to each other with the output port VAD of load detecting circuit, and output port is connected with input port K0, the G0 of power circuit B and R11, the R12 of drive circuit of magnetic latching relay F1 respectively.In F1, when pulse signal of resistance R 11 inputs, triode Q4, Q5, Q7 conducting, Q3, Q6, Q8 end, and the coil of magnetic latching relay RL leads to direct impulse voltage, and the closing of contact of RL makes switch open.When pulse signal of resistance R 12 inputs, triode Q3, Q6, Q8 conducting, Q4, Q5, Q7 end, and the coil of magnetic latching relay RL leads to reverse impulse voltage, and the contact of RL disconnects switch cuts out.Because only need at switch open and the instantaneous magnetic latching relay coil electricity of giving of closing, power consumption is very low.
The transient current control circuit only entered when putting guard mode at battery as protective circuit and provided immediate current for system, was not used in system's power supply at ordinary times, and circuit comprises resistance R 1～R4, field effect transistor Q1 and Q2, diode D1～D4 and capacitor C 1; The drain electrode of field effect transistor Q1 is connected the input IN as the transient current control circuit with the end of R1; The source electrode of field effect transistor Q1 is connected with the end of R3, R4, transient state diode D1, the other end of R3 links to each other with the end of C1, voltage stabilizing didoe D3, isolating diode D4 and forms the output OUT1 of transient current control circuit D, and the other end of diode D4 constitutes the output OUT2 of E; The grid of field effect transistor Q1 is connected with the other end of R1, D1 and the end of R2, and the other end of R2 is connected with the drain electrode of Q2; The grid of field effect transistor Q2 is connected with the negative pole of the other end of R4, voltage stabilizing didoe D2 and as the Current Control input port Ctrl of transient current control circuit; The negative pole of the source electrode of field effect transistor Q2 and D2, D3, C1 forms public ground and is connected with the direct current of each unit of switch publicly.
The Current Control input port Ctrl of transient current control circuit links to each other with an end of the touch key-press of infrared induction control circuit, the public ground of another termination of touch key-press.The input IN of transient current control circuit is connected with the binding post LOAD of switch, output port Out1 is connected with drive signal generation circuit, drive signal generation circuit comprises voltage checking chip IC1, when the output voltage of transient current control circuit Out1 port is higher than the transfer valve threshold voltage of IC1, IC1 will export high level and make the Q9 conducting, and then drive signal generation circuit output low level drive signal is given the driving signal input mouth IN1 of drive circuit of magnetic latching relay.The output port Out2 of transient current control circuit links to each other with the power input mouth IN2 of relay drive circuit.
When switch is in closed condition, L, N two ends add the moment of 220V alternating current, Q2 ends, Q1 obtains higher grid average voltage by resistance R 1 and is in abundant conducting state, there is big electric current to flow through the source electrode of Q1, give voltage regulation filtering element D3, C1 through current-limiting resistor voltage divider R3, the grid of Q2 obtains voltage and conducting through R4 and D2 simultaneously, and the grid average voltage of Q1 decreases and makes Q1 be in insufficient conducting state.The time of the abundant conducting of Q1 is very short, the quiescent dissipation of drive signal generation circuit is extremely low because the transient current control circuit is not used in system's power supply at ordinary times again, so the Out1 port can have the output of stable voltage and this voltage IC1 transfer valve threshold voltage far below drive signal generation circuit, Q2 obtains stable grid voltage and remains on conducting state afterwards.
When the touch key-press that touches with have gentle hands in the infrared induction control circuit, the Current Control input port of transient current control circuit has obtained sufficiently long low level control signal, Q2 ends, the grid of Q1 obtains the average high pressure of long period and its output current is increased, the transient current control circuit can provide operating current for drive circuit of magnetic latching relay for this reason, and the IC1 of drive signal generation circuit obtains to be higher than the voltage of importing threshold values, the output high level, the Q9 conducting, then drive signal generation circuit output low level drive signal is given the driving signal input mouth IN1 of drive circuit of magnetic latching relay, drive circuit of magnetic latching relay obtains drive signal and operating current driving magnetic latching relay closure, switch open in moment.Behind the switch open, the transient current control circuit loses high voltage and enters low conducting state, can not provide operating current for drive circuit of magnetic latching relay, and the operating current of system will be provided by power circuit and battery.
Referring to accompanying drawing two, according to the size of bearing power, power circuit is operated under the dual mode, and mode 1 is not adhesive of magnetic latching relay RL0, and rectifier bridge BRIDGE2 participates in work; Mode 2 is magnetic latching relay RL0 adhesive, and rectifier bridge BRIDGE2 quits work.Adopt working method 1 when bearing power is lower than certain value, power circuit can also guarantee big charging current except providing the operating current for system, and the heating situation of rectifier bridge BRIDGE2, field effect transistor Q10 is in the scope of allowing.Under the situation of high power load, attracting electric relay RL0, current transformer T1 also can provide bigger charging current.The switching of working method is by the size of the identification of the microcontroller in the infra-red remote control control circuit C from the magnitude of voltage of load detecting circuit A, when voltage is higher or lower than certain value, microcontroller sends drive signal, drive RL0 through drive circuit of magnetic latching relay F2 and make its switching closed or disconnection realization working method, can adjust the working method of power circuit according to the size of load at any time, can obtain big mean charging current, again can the power controlling device heating within the scope of allowing.
T1 is a current transformer in the power circuit, and IC2 is a voltage checking chip, and IC3 is the voltage-dropping type voltage adjuster, and Q10 is a field effect transistor, and D8, D9 are that transient voltage suppresses diode, and RL0 is a magnetic latching relay, and F2 is a drive circuit of magnetic latching relay.Mode 1: behind switch open, the induced current of T1 flows through diode D2 simultaneously through the load current of the rectifier bridge BRIDGE1 and the rectifier bridge BRIDGE2 that flows through, when the voltage of the input Vin of IC2 reaches the transfer valve threshold voltage of IC2, the IC2 output obtains high level by R14, the output of IC2 links to each other with the grid of Q10, D, the conducting of the S utmost point when the grid of Q10 obtains high level, the D10 positive pole loses voltage, the voltage at the input Vin place of IC2 begins to descend and reaches below the input threshold values, the IC2 output low level is ended Q10, and electric current flows through D10 again.C3 carries out filtering to the electric current that flows through D10, make the input of IC3 obtain a voltage around a certain magnitude of voltage fuctuation within a narrow range, the fixed voltage of IC3 output provides operating current and voltage for whole system behind isolating diode D13, if being in unsaturated state, battery will make battery enter charged state, bearing power is big more, and charging current is big more.Mode 2: magnetic latching relay RL0 closure, rectifier bridge BRIDGE2 no longer works, induced current by current transformer T1 provides operating current through rectifier bridge BRIDGE1 for whole system, the charging current of battery can obviously reduce, but the temperature of power device will fall after rise gradually, except BRIDGE2 does not participate in the work, other course of work is identical with mode 1.The operation principle of drive circuit of magnetic latching relay F2 is identical with the operation principle of F1, repeats no more.
To battery charge, several bearing powers interval can be set for more effectively, such as A, B, C, three intervals, bearing power is when A is interval, and power supply always works in mode 1 time; Bearing power can switch to mode 2 again at 1 time work of mode certain hour when B is interval, switch to mode 1 after a while again; Bearing power is switched in mode 1 and 2 of modes when C is interval equally back and forth, just will adjust switching time, can obtain big mean charging current and can make the power device heating again in the scope of allowing.
Referring to accompanying drawing three, go into to close state in order to guarantee switch in that mains failure is laggard, can be at power circuit B Zhong Jia city power detection circuit IC4, the output of its input termination IC3, output VSD connects an input of microcontroller among the infrared induction control circuit C.The VSD end is output as high level when switch is in opening, and the VSD end is with output low level if civil power has a power failure suddenly, and city power detection circuit IC4 detects this state and gives microcontroller chip, and microcontroller sends control signal makes switch enter closed condition.
Claims (3)
1, a kind of little power consumption infrared inductive switch, comprise the circuit board assemblies and the lithium polymer secondary battery that are installed in the housing, circuit board assemblies comprises load detecting circuit, magnetic latching relay, drive circuit of magnetic latching relay, power circuit, transient current control circuit, drive signal generation circuit, has the infrared induction control circuit of microcontroller chip, and it is characterized in that: the coil of magnetic latching relay is connected with drive circuit; The input port of infrared induction control circuit is connected with load detecting circuit, output port is connected with drive circuit and control Driver Circuit drives the closed or disconnection of magnetic latching relay, and the output port of control circuit also links to each other with the Current Control input port of transient current control circuit and provides drive signal for it; The transient current control circuit is connected with drive circuit with drive signal generation circuit and for it provides electric energy and drive signal, does not need microcontroller and power circuit participation work just can open switch; Microcontroller is according to the working method of the magnitude of voltage control power supply that detects from load detecting circuit, and the switch open state is the state as long as battery does not reach capacity down, and power circuit is always to battery charge.
2, switch according to claim 1, it is characterized in that: the transient current control circuit comprises resistance R 1～R4, field effect transistor Q1 and Q2, diode D1～D4 and capacitor C 1;
The drain electrode of field effect transistor Q1 is connected the input IN as the transient current control circuit with the end of R1;
The source electrode of field effect transistor Q1 is connected with the end of R3, R4, transient state diode D1, the other end of R3 links to each other with the end of C1, voltage stabilizing didoe D3, isolating diode D4 and forms the output OUT1 of transient current control circuit, and the other end of D4 forms another output OUT2 of transient current control circuit;
The grid of field effect transistor Q1 is connected with the other end of R1, D1 and the end of R2, and the other end of R2 is connected with the drain electrode of Q2;
The grid of field effect transistor Q2 is connected with the negative pole of the other end of R4, voltage stabilizing didoe D2 and as the Current Control input port Ctrl of transient current control circuit;
The negative pole of the source electrode of field effect transistor Q2 and D2, D3, C1 forms public ground and is connected with the direct current of each unit of switch publicly.
3, switch according to claim 1 is characterized in that: the positive pole of the isolating diode between power circuit and battery is introduced city's power detection circuit, and the output of city's power detection circuit is connected with microcontroller chip in the infrared induction control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620118433 CN2924930Y (en) | 2006-06-08 | 2006-06-08 | Micr power consumption infrared sensor switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620118433 CN2924930Y (en) | 2006-06-08 | 2006-06-08 | Micr power consumption infrared sensor switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924930Y true CN2924930Y (en) | 2007-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620118433 Expired - Fee Related CN2924930Y (en) | 2006-06-08 | 2006-06-08 | Micr power consumption infrared sensor switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2924930Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293473A (en) * | 2013-06-06 | 2013-09-11 | 东莞博用电子科技有限公司 | Electronic switch detecting circuit applied to LED illuminating lamp |
-
2006
- 2006-06-08 CN CN 200620118433 patent/CN2924930Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293473A (en) * | 2013-06-06 | 2013-09-11 | 东莞博用电子科技有限公司 | Electronic switch detecting circuit applied to LED illuminating lamp |
| CN103293473B (en) * | 2013-06-06 | 2015-10-14 | 深圳博用科技有限公司 | A kind of electronic switch testing circuit be applied in LED illumination lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |