CN102044379A

CN102044379A - Relay control device

Info

Publication number: CN102044379A
Application number: CN2010106017953A
Authority: CN
Inventors: 陈耀华
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-14
Filing date: 2010-12-14
Publication date: 2011-05-04
Anticipated expiration: 2030-12-14
Also published as: DE102011107739A1; CN102044379B; DE102011107739B4

Abstract

The invention provides a relay control device. The relay control device is provided with a relay control circuit and a direct current power supply, wherein the relay control circuit is connected with the output end of a controller; the direct current power supply is used for supplying electricity to the controller and the relay control circuit; the direct current power supply is provided with a rectifier circuit connected with an alternative power supply; a partial pressure type supply circuit composed of direct current partial pressure parts is arranged between two output ends of the rectifier circuit, and comprises a group of direct current work power supply ends for supplying the electricity to the relay control circuit and a group of direct current standby work power supply ends for supplying the electricity to the controller; the relay control circuit is provided with a switch control relay and a second switch audion, the switch control relay is connected with the direct current work power supply, and the second switch audion is connected with the switch control relay in parallel; a second switch audion base is connected with the direct current standby work power supply through a first switch audion the polarity of which is opposite to that of the second switch audion; and a first switch audion base is connected with the output end of the controller and used for providing break-over bias to the second switch audion. By using the relay control device, the power consumption of the direct current work power supply of the relay control circuit is reduced, and the operation is reliable.

Description

A kind of relay control device

Technical field

The invention belongs to a kind of electronic electric equipment, be specifically related to a kind of relay control device.

Background technology

In control device, as carrying out control assembly, the input of bang-bang circuit is connected with controller through relay commonly used, and output is connected with controlled object, and controller is controlled the work of controlled object by the contact of relay.The required direct-current working volts of the required direct-current working volts of general bang-bang circuit and controller are different, provided respectively by dc supply.In some control occasion, controlled object normally is in wait state, only when sending signal, controller just works, for example shown in Figure 1 is a kind of control circuit of remote circuit socket, controller in its square frame accepts circuit JSMK by remote signal and decoding circuit IC1 forms, bang-bang circuit mainly is made up of with the relay J D1 that is connected in its collector loop switch control triode Q1, and relay contact is serially connected in controlled object--and J3 exchanges in the output loop.

The weak point of this class relay control device is: under holding state, for the parts in the dc working power circuit of relay power supply (as being voltage-stabiliser tube Z1 and resistance R 0 in the dc working power circuit of switch control relay power supply among Fig. 1) also have electric current to flow through, therefore to consume more electric energy.

Summary of the invention

The technical problem to be solved in the present invention provide a kind of under holding state the less relay control device of consumed power.

The technical scheme that addresses the above problem is: the present invention is provided with the bang-bang circuit that is connected with controller output end, is controller and bang-bang circuit direct current power source supplying power, it is characterized in that: described DC power supply is provided with the rectification circuit that is connected with AC power, be provided with the partial pressure type power supply circuits of forming by the dc partial voltage parts between rectification circuit two outputs, the partial pressure type power supply circuits comprise that one group is that the dc supply end of bang-bang circuit power supply and one group are the direct current stand-by operation power end of controller power supply; Described bang-bang circuit is provided with the switch control relay that is connected with dc supply, with the second switch triode that is connected in parallel with the switch control relay, the second switch transistor base is by being connected with direct current stand-by operation power supply with opposite polarity first switch triode of second switch triode, the first switch triode base stage is connected with controller output end, is used to the second switch triode that the conducting bias voltage is provided.

The dc partial voltage parts of described composition partial pressure type power supply circuits can be voltage-stabiliser tube and/or resistance etc.

Operation principle of the present invention is:

Down, controller output services signal ends first switch triode in working order, and the second switch triode also ends simultaneously, and dc supply is the power supply of switch control relay, by the break-make of relay contact control controlled circuit;

Under holding state, the standby signal of controller output makes the first switch triode conducting, for second switch three utmost points provide the conducting bias voltage, the second switch triode is satisfied close conducting, the second switch triode short circuit that this moment, the switch control relay was connected in parallel, quit work, the dc supply two ends are by short circuit simultaneously, corresponding bleeder circuit no current flows through, consumed power not, like this, under holding state, have only the bleeder circuit corresponding to have electric current to flow through with direct current stand-by operation power supply, be the controller power supply, in running order controller can send working signal to the bang-bang circuit that is in holding state at any time as required, and in a single day the bang-bang circuit of holding state receives the working signal of controller, can make first again, two switch triodes end, and the switch control relay recovers to connect operating state again.

The present invention is connected in parallel with second switch triode and switch control relay, use again by controller and control, and provide the conducting bias voltage for the second switch triode with opposite polarity first switch triode of second switch triode, opposite polarity first switch triode can play paraphase, the effect that level shifts, thereby both can be added in the dc supply at bang-bang circuit two ends at short circuit under the holding state, dc partial voltage parts no current in the corresponding power bleeder circuit is flow through, consumed power not, direct current stand-by operation power supply can be at any time controller and can send control signal normally for the controller power supply, bang-bang circuit is in the holding state that can accept control signal at any time simultaneously.

The present invention can reduce the power consumption of bang-bang circuit dc supply under holding state, has reliable operation, a little advantage of power consumption under holding state.

Description of drawings

The remote circuit socket circuit figure of Fig. 1, available technology adopting bang-bang circuit

Fig. 2, frame principle figure of the present invention

Fig. 3, the embodiment of the invention adopt the remote circuit socket circuit figure of bang-bang circuit

Embodiment

Below in conjunction with Fig. 3 embodiment the present invention is further described.

This example is a kind of remote circuit socket that adopts bang-bang circuit.Its bang-bang circuit, controller and DC power supply are contained in the housing, housing is provided with the interchange input plug that can be connected with AC power and exchanges output socket, the zero line side that exchanges input plug is connected with the zero line side that exchanges output socket, the live wire end that exchanges input plug is connected with the live wire end that exchanges output socket by the normally open contact of relay J DQ, the rectification circuit of described DC power supply with exchange the input plug electrical connection.

Referring to Fig. 3, J1 exchanges the input plug N utmost point and the common zero line end that exchanges the output socket N utmost point, J2 exchanges the input plug L utmost point, and J3 is the OUT end that exchanges output socket, and this end is connected with the L utmost point (J2) that exchanges input plug by the normally open contact of switch control relay JDQ.

Be provided with controller (circuit in Fig. 3 dashed rectangle), the bang-bang circuit that is connected with controller in the Socket casing and be controller and bang-bang circuit direct current power source supplying power circuit.

The structure of described DC power supply circuit is: be provided with AC power the bridge rectifier that is connected, is made up of rectifier diode D1-D4, the partial pressure type power supply circuits are made up of the two voltage-stabiliser tube Z1, the Z2 that are connected on two dc partial voltage parts-series aiding connections between bridge rectifier two outputs, two voltage-stabiliser tube tie point ground connection, bridge rectifier two outputs one end is by the first voltage-stabiliser tube Z1 ground connection, and formation is+5 volts direct current stand-by operation power supply over the ground; The other end is by the second voltage-stabiliser tube Z2 ground connection, and constituting opposite polarity is-24 volts dc supply over the ground.

The first voltage stabilizing didoe Z1 two ends and filter capacitor C3, C5 are connected in parallel, and the second voltage stabilizing didoe Z2 two ends and filter capacitor C4, C6 are connected in parallel.

The AC power input circuit is in series with current-limiting resistance R1 and capacitor C 1, and capacitor C 1 two ends are parallel with resistance R 2, the R3 (220 kilo-ohm) of resistance much larger than current-limiting resistance R1 (100 Europe).

Described bang-bang circuit structure is: switch control relay JDQ coil two ends are connected with-24 volts of dc supplies, its normally open contact is connected on controlled J3 and exchanges in the output loop, second switch triode Q2 is the NPN type, be connected with switch control relay JDQ coils from parallel connection of coils, its grounded collector, emitter connect the other end (24 volts) of dc supply; Second switch triode Q2 base stage is with being connected with its opposite polarity positive-negative-positive first switch triode Q1 collector electrode, the first switch triode Q1 emitter is connected with+5 volts of direct current stand-by operation power ends by the diode D5 that forward connects, and the first switch triode Q1 base stage is connected with controller.

It in the dashed rectangle controller, described controller is provided with the remote signal receiving circuit that is used for receiving baseband signal, with the decoding circuit that is connected with remote signal receiving circuit output, the decoding circuit output is connected with the base stage of the first switch triode Q1 of aforementioned bang-bang circuit;

Specifically: remote signal receives the superregenerative detection circuit that the input circuit of circuit is made up of triode Q3, this circuit is connected with the base band amplifying circuit of being made up of operational amplifier 1C1A by the low-pass filter circuit that 1R5,1C6,1R6,1C6 form, and the base band amplification circuit output end is connected with decoding circuit by the pulse shaper of being made up of operational amplifier 1C1AB; Decoding circuit is made up of with peripheral circuit integrated circuit HL0604E (U2), and the pulse shaper output of remote signal receiving circuit is connected with its input 16 pin, and its control output end 4 pin are connected with the base stage of the first switch triode Q1 of bang-bang circuit.

The remote signal receiving circuit of controller and decoding circuit are powered by+5 volts of direct current stand-by operation power supplys.

This routine operation principle is:

Under holding state, + 5 volts of direct current stand-by operation power supplys are remote signal receiving circuit and decoding circuit power supply, when not receiving control signal, decoding circuit 4 pin output low levels, the first switch triode Q1 conducting, second switch triode Q2 satisfies and closes conducting, with switch control relay JDQ coil short, relay is not worked, and exchanges output loop J3 and is cut off by normally opened contact, does not have the output of interchange;

The first voltage-stabiliser tube Z1 two ends of-24 volts of dc supplies of this moment are by second switch triode Q2 short circuit, and no current flows through, and does not have power consumption.

After the remote signal receiving circuit is received the remote control working signal, through decoding circuit decoding output high level, the first switch triode Q1 ends, second switch triode Q2 is ended,-24 volts of dc supplies are added to switch control relay JDQ coil two ends, exchange the normally opened contact connection that output loop J3 is closed, the output of interchange is arranged.

Shown in Figure 1 is the remote circuit socket of available technology adopting relay control, and this circuit is in holding state following time, and the voltage-stabiliser tube Z1 of 24 volts of dc supplies also has electric current to flow through, so the power consumption of holding state is about 1W; And the embodiment of the invention is under holding state, 24 couchers are made power supply by second switch triode Q2 short circuit, the voltage-stabiliser tube Z2 non-transformer of the bleeder circuit corresponding with it flows through, alternating current process current-limiting resistance R1 and capacitor C 1 step-down, D1-D4 rectification, C3, C5 filtering, the Z1 voltage stabilizing, export+5 volts of stand-by operation DC power supply, only consume the very little active power (C1 does not consume active power) of about 0.2W, therefore have the low advantage of consumed power under holding state.

This example second voltage-stabiliser tube Z2 can prevent that crest voltage is too high, and filter capacitor C4, the C6 in parallel with it can reduce ripple, makes the adhesive of switch control relay JDQ contact more reliable and more stable.

Claims

1. relay control device, be provided with the bang-bang circuit that is connected with controller output end, be controller and bang-bang circuit direct current power source supplying power, it is characterized in that: described DC power supply is provided with the rectification circuit (D1-D4) that is connected with AC power, be provided with the partial pressure type power supply circuits of forming by dc partial voltage parts (Z1, Z2) between rectification circuit two outputs, the partial pressure type power supply circuits comprise that one group is that the dc supply end of bang-bang circuit power supply and one group are the direct current stand-by operation power end of controller power supply; Described bang-bang circuit is provided with and dc supply (V _SS) the switch control relay (JDQ) that connects, with the second switch triode (Q2) that is connected in parallel with switch control relay (JDQ), the second switch transistor base by with opposite polarity first switch triode of second switch triode (Q1) and direct current stand-by operation power supply (V _DD) connect, first switch triode (Q1) base stage is connected with controller output end, is used to second switch triode (Q2) that the conducting bias voltage is provided.

2. relay control device according to claim 1, it is characterized in that: the structure of described partial pressure type power supply circuits is: rectification circuit two outputs one end that is connected with AC power constitutes described direct current stand-by operation power supply by first voltage-stabiliser tube (Z1) ground connection; The other end constitutes described dc supply by second voltage-stabiliser tube (Z2) ground connection.

3. relay control device according to claim 2 is characterized in that: described first voltage stabilizing didoe (Z1) two ends and filter capacitor (C3, C5) are connected in parallel, and second voltage stabilizing didoe (Z2) two ends and filter capacitor (C4, C6) are connected in parallel.

4. relay control device according to claim 2, it is characterized in that: described bang-bang circuit structure is: second switch triode (Q2) is the NPN type, be connected with switch control relay (JDQ) coils from parallel connection of coils, its grounded collector, emitter connects the other end of dc supply; Second switch triode (Q2) base stage is with being connected with its opposite polarity positive-negative-positive first switch triode (Q1) collector electrode, first switch triode (Q1) emitter is connected with direct current stand-by operation power end by the diode (D5) that forward connects, and first switch triode (Q1) base stage is connected with controller.

5. according to claim 2,3 or 4 described relay control devices, it is characterized in that: described controller is provided with the remote signal receiving circuit that is used for receiving baseband signal, with the decoding circuit that is connected with remote signal receiving circuit output, the decoding circuit output is connected with the base stage of first switch triode (Q1) of described bang-bang circuit.

6. relay control device according to claim 5, it is characterized in that: described bang-bang circuit, controller and DC power supply are contained in the housing, housing is provided with the interchange input plug that can be connected with AC power and exchanges output socket, the zero line side that exchanges input plug is connected with the zero line side that exchanges output socket, the live wire end that exchanges input plug is connected with the live wire end that exchanges output socket by the normally open contact of relay (JDQ), the rectification circuit of described DC power supply with exchange the input plug electrical connection.