CN2646958Y

CN2646958Y - Hanging type power switch timing unit

Info

Publication number: CN2646958Y
Application number: CN 03277297
Authority: CN
Inventors: 张介品
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-22
Filing date: 2003-07-22
Publication date: 2004-10-06
Anticipated expiration: 2013-07-22

Abstract

The utility model discloses a hanging type power switch timing unit to provide an electronic circuit comprising the basic circuit components such as a resistor, a capacitance and a diode, a microprocessor and a double-direction controllable silicon (TRIAC), which is hung on the general home-use single-cut switch to realize timing relay. The electronic circuit can detect the signal trigger of the home-use single-cut switch action and start the timing of the microprocessor in fast action of close and open (OPEN-CLOSE-OPEN) and output an offset voltage to the trigger pin of the double-direction controllable silicon, therefore, the connected double-direction controllable silicon can continue the action of device. After the timer completes the time counting, the microprocessor stops sending the offset voltage. The double-direction controllable silicon is cut off and the electric device is closed. The switch feature of the double-direction controllable silicon is used as a switch.

Description

Attached mains switch timing device

Technical field

The utility model relates to a kind of attached mains switch constant time lag device, mainly is to cut off the back at various places such as indoor, corridor, bathrooms as the electric equipment switch to postpone the control device that certain hour cuts off appliances power source again.

Background technology

Usually, this area is as the device of constant time lag, and is comparatively common with timing switch or modular form, is used for dealing with the device requirement that still need operate a period of time after the user leaves.Though but relevant therewith product can reach the purpose of constant time lag, often has following problem: on the line design, because system itself is in parallel with load, so increase the degree of difficulty of its construction; The method that this area is commonly used to head it off promptly is to develop whole delay system in modular mode, causes development cost to improve also and can't reduce manufacturing cost; Because the relevant action number of times too much reduces the useful life of this assembly relatively.

Summary of the invention

According to above-mentioned, the utility model provides a kind of constant time lag device with same nature to be used as the execution mode of another form at this, when making general user use electric equipment, delay a period of time closes electrical equipment again behind the powered-down switch, reaching the user by this need not aside wait for, and electrical work finish after promptly automatically with the purpose of power-off.

Main purpose of the present utility model, be to provide with the basic circuit assembly the resistor that often uses, capacitor, diode, the electronic circuit that controllable silicon cooperates microprocessor and bidirectional triode thyristor (TRIAC) to form, attachedly be hung on general family expenses single knife switch to reach the effect of constant time lag, the electronic circuit of forming in use, accept the signal triggering of family expenses single knife switch action, starting fast, close the following startup microprocessor timing of (OPEN-CLOSE-OPEN) action and export one and be biased into bidirectional triode thyristor silicon controlled triggering pin, the action of conducting bidirectional triode thyristor continuity electrical equipment, after treating that timer is finished timing, microprocessor stops to send bias voltage, bidirectional triode thyristor cuts out, electrical equipment also cuts out thereupon, uses as a switch by the switching characteristic of bidirectional triode thyristor.

The utility model concrete structure is: a kind of attached mains switch constant time lag device, the voltage stabilizing rectification circuit that comprises operating voltage required when microprocessor work is provided, connect signal input and signal output, when trigger starting, pick up counting and export one and be biased into bidirectional triode thyristor and open ON in order to the control bidirectional triode thyristor, close the OFF microprocessor, action by the family expenses single knife switch is sent the state signal triggers circuit that a state picks up counting it and moves to microprocessor as a triggering signal and by two resistors, and by reaching out ON by microprocessor control, close OFF and come the bidirectional triode thyristor of on-off action to form, the voltage stabilizing rectification circuit is corresponding to the supply pin (V of microprocessor ₊, V _-), the state signal triggers circuit is connected to the signal input pin (A) of microprocessor, the The Trigger of Bidirectional Triode Thyristor pin is connected to the signal output pin (B) of microprocessor, forms the constant time lag apparatus main body, main body formation one attached constant time lag device in parallel with the family expenses single knife switch.

Description of drawings

Fig. 1: the rough schematic of the utility model attached mains switch constant time lag device.

Fig. 2: the assembly calcspar of the utility model attached mains switch constant time lag device.

Fig. 3 a: preferred embodiment of the utility model attached mains switch constant time lag device circuit.

Fig. 4 a: preferred embodiment of the utility model attached mains switch constant time lag device.

Embodiment

The attached mains switch constant time lag device of the utility model design referring to Fig. 2, Fig. 3, mainly is made up of voltage stabilizing rectification circuit 11, microprocessor 12, state signal triggers circuit 13, bidirectional triode thyristor 14;

Wherein:

Voltage stabilizing rectification circuit 11 is made up of voltage stabilizing didoe ZD, diode D and two capacitor C1, C2, required operating voltage when microprocessor 12 work mainly is provided; Microprocessor 12, connect a signal input pin A and a signal output pin B, when triggering the entry condition establishment, the A point is input as ON and keeps a period of time, and the situation of (RESET) does not promptly pick up counting and exports one and is biased into bidirectional triode thyristor 14 opening ON, close the OFF state in order to control bidirectional triode thyristor 14 but microprocessor also resets;

State signal triggers circuit 13, the action by family expenses single knife switch SW is as a triggering signal and send a state by two resistor R 1, R2 and it is picked up counting for microprocessor 12 and move;

Bidirectional triode thyristor 14 reaches ON, OFF by microprocessor 12 controls and is used as the switch use.

The assembling example is with the supply pin V of voltage stabilizing rectification circuit 11 corresponding to microprocessor 12 referring to Fig. 2, Fig. 4 ₊, V _-State signal triggers circuit 13 is connected to the signal input pin A of microprocessor 12, the The Trigger of Bidirectional Triode Thyristor pin is connected to the signal output pin B of microprocessor, it is in parallel with the family expenses single knife switch to form an attached mains switch constant time lag device to form constant time lag apparatus main body 1, by this, kept original switch and reached required function, so by attached extension circuit, not only be easy to construction, and more reduced cost.

Action example, (referring to Fig. 3) are with the constant time lag apparatus main body 1 attached family expenses single knife switch SW that is hung in parallel, utilize the action of the switching state control constant time lag apparatus main body 1 of family expenses single knife switch SW, total following state:

I, SW keep off-state OPEN: AC power produces pressure drop through load L, capacitor C1, voltage stabilizing didoe ZD, pressure drop VZD=3.3V (AC) on ZD, through diode D, capacitor C2 rectification is that direct current (DC) 3.3V provides microprocessor 12 operating voltages, and this moment, the A current potential VA of ordering was not 0, so the time microprocessor await orders but not-time.

II, SW keep starting state CLOSE: this moment, the circuit power supply system pressure drop was 0 (both ends of power is a short-circuit condition), capacitor C2 discharge, because of capacitor C2 voltage is discharged to the current potential (discharge time is greater than t) that microprocessor can't be worked, microprocessor enters the state of the RESET that resets.

III, SW disconnect the back and start OPEN-CLOSE: (CLOSE) time that wherein starts is during greater than discharge time, promptly by state I to state I I, the result of this kind start process is with generally switch motion is identical.

IV, SW action is for closing CLOSE-OPEN after starting: wherein when the startup CLOSE time greater than discharge time during t, this moment microprocessor thereby enter the RESET state, situation as state I I, so after SW disconnects OPEN, promptly arrive state I, no timing action produces, and the result of this kind start process is identical with general switch motion.

V, SW action disconnects OPEN-CLOSE-OPEN for starting the back: wherein, the startup CLOSE time is when being no more than t, then capacitor C2 does not discharge into and makes the microprocessor RESET that resets, it is that 0V is (because two-end-point is a short-circuit condition that microprocessor is detected A point current potential in the startup CLOSE time, judge that according to the dividing potential drop theorem A point is 0V), then pick up counting and triggering pin, make bidirectional triode thyristor conducting electrical work in B point output one evoked potential to bidirectional triode thyristor 14; After treating that microprocessor 12 timing are finished, the B point is not exported evoked potential and is made not conducting of bidirectional triode thyristor, and then electrical equipment quits work, and so, makes electrical equipment stop from working to being postponed a period of time than general switch.

Claims

1. attached mains switch constant time lag device, the voltage stabilizing rectification circuit that comprises operating voltage required when microprocessor work is provided, connect signal input and signal output, when trigger starting, pick up counting and export one and be biased into bidirectional triode thyristor and open ON in order to the control bidirectional triode thyristor, close the OFF microprocessor, action by the family expenses single knife switch is sent the state signal triggers circuit that a state picks up counting it and moves to microprocessor as a triggering signal and by two resistors, and by reaching out ON by microprocessor control, closing OFF has come the bidirectional triode thyristor of on-off action to form, it is characterized in that: the voltage stabilizing rectification circuit is corresponding to the supply pin (V+ of microprocessor, V-), the state signal triggers circuit is connected to the signal input pin (A) of microprocessor, the The Trigger of Bidirectional Triode Thyristor pin is connected to the signal output pin (B) of microprocessor, form the constant time lag apparatus main body, main body formation one attached constant time lag device in parallel with the family expenses single knife switch.