CN203687184U - Control circuit for heater control valve - Google Patents

Abstract

The utility model relates to a control circuit for a heater control valve, which can be applied to heater household metering systems of new buildings or heater household metering and energy-saving transformation of existing buildings. The control circuit for the heater control valve comprises a motor M1 and a singlechip computer, wherein the motor M1 is used for opening and closing the valve; the singlechip computer is used for receiving a signal and controlling the motor to rotate. According to the control circuit, the valve can be opened and closed under the control of the singlechip computer; a heater valve can be freely opened and closed by a user; when all people leave the room, the valve can be closed, charging is stopped, and the automatic energy saving effect is achieved. Moreover, the user can freely set the indoor temperature; when the indoor temperature reaches a set value, the heater valve can be automatically closed, the charging is stopped, and the room temperature is adjusted to reach the temperature set by the user and is maintained, so that the problem of resource wasting is solved. According to the control circuit, an IC (integrated circuit) card pre-payment mode can be adopted, so that the problem of difficulty in heat supply charging is solved, and management of a heat supply department is facilitated.

Description

A kind of control circuit of heater control valve

Technical field

The utility model relates to a kind of heating installation control circuit, and be specifically related to one and can be applied to new building heating installation household metering system, or the control circuit of heater control valve of the heating installation household metering of existing building, reducing energy consumption aspect.

Background technology

Saving the energy is the fundamental state policy of China, but northern China province has 25% the energy to be consumed by heating, and heating and energy saving becomes the task of top priority.China, by hot metering pilot reform over 10 years, finds to install family and has run into the difficulty that is difficult to overcome with calorimeter, for example: if some people wants turning off steam in the time not using, can only close common manually-operated gate, cannot automatically close; Uncontrollable room temperature, the heat release of windowing when room temperature is too high; When room no man, continue heating, cause the waste of resource.Because traditional heating is pressed area charging, user does not have economy consciousness, has produced the difficult problem of paying the fees simultaneously yet.

Summary of the invention

For the above problem, the utility model provide a kind of novel structure, point family or locellus metering, can Lookup protocol temperature, free switch the control circuit of heater control valve of heating intelligent energy-saving metering device of novel, IC-card pre-payment.

For addressing the above problem, the technical solution of the utility model is: a kind of control circuit of heater control valve, comprising :-motor, for opening and closing valve;-single-chip microcomputer, for receiving signal and controlling electric machine rotation; The OPEN pin of single-chip microcomputer connects out limit switch, CLOSE pin connects pass limit switch, drive limit switch and close limit switch earth, then be all connected to power supply by pull-up resistor, the DATA pin of single-chip microcomputer connects the control line of temperature controller, being connected to power supply through pull-up resistor, is motor-drive circuit between the ON pin of single-chip microcomputer and OFF pin.Wherein motor directly adopts outside voltage-stabilized power supply power supply, and power failure does not stop to warm up like this, more meets hommization heat supply managing.The P3.2 pin of single-chip microcomputer connects temperature controller control line as DATA pin, received pulse or low and high level, and single-chip microcomputer is controlled and is opened or closed valve after processing.Above-mentioned single-chip microcomputer P3.1 pin is as OPEN pin, and P3.3 pin is as CLOSE pin, and connects power supply by pull-up resistor respectively, puts in place when driven by motor valve closes, and closes limit switch and disconnects, and CLOSE pin is drawn high, now, and Single-chip Controlling motor stalling; The principle of driving limit switch is identical with pass limit switch.

Described motor-drive circuit comprises two PMOS pipes, two NMOS pipes, the drain electrode of the source electrode of the 2nd PMOS pipe Q2 and NMOS pipe Q3 is connected to the M+ pin of motor M 1 jointly, the M-pin of the motor M 1 that the source electrode of the one PMOS pipe Q1 is connected jointly with the drain electrode of the 2nd NMOS pipe Q4, the source ground of two NMOS pipes, two PMOS pipes drain electrode connect power supply by a current-limiting resistance, the grid of the 2nd PMOS pipe Q2 and NMOS pipe Q3 is connected to OFF pin jointly, and the grid of a PMOS pipe Q1 and the 2nd NMOS pipe Q4 is connected to ON pin jointly.In the time that needs are opened valve, the output of ON pin is low, and the output of OFF pin is high, a PMOS pipe Q1 and NMOS pipe Q3 conducting, and motor rotates to exploitation direction; In the time of needs valve-off, the output of OFF pin is low, and the output of ON pin is high, the 2nd PMOS pipe Q2 and the 2nd NMOS pipe Q4 conducting, and motor rotates to closing valve direction.

Between the supply pin VCC of single-chip microcomputer and power supply lower margin GND, be connected with three shunt capacitances.Wherein two is polar capacitor, plays the effect of filtering and voltage stabilizing, and another is ceramic condenser, removes the high-frequency noise of power supply.

Between the M+ pin of motor M 1 and M-pin, be connected with electric capacity.When motor rotation, easily produce higher hamonic wave, the interference to other radio signals when electric capacity can effectively reduce machine operation.

The TXD1 pin of single-chip microcomputer and RXD1 pin be TXD1 pin and the RXD1 pin of connecting connector respectively, and is connected to power supply by pull-up resistor respectively, and 3 pin of connector meet power supply VCC, and 4 pin of connector connect power supply ground.Single-chip microcomputer is connected with the upgrading of being convenient to software for the connector of programming program.

In addition, circuit board external interface has three lines, is respectively power line VCC, ground wire GND, the control line of temperature controller.

There is electric voltage observation circuit described single-chip microcomputer inside, when supply voltage is lower than 2V, and monolithic processor resetting.Can also there be house dog single-chip microcomputer inside, if program is surprisingly run and flown, can again reset, and resumes operation.

Can also be provided with the identification circuit of swiping the card, coordinate with this circuit, by the cost information input in IC-card, if also have expense, this circuit works on, if expense is too low or use up, circuit is not worked, and prompting is supplemented with money, and this is easily to realize.

The utility model can pass through the switch of Single-chip Controlling valve, realizes user's free switch central heating valve, when room no man, can close, and stops charging, realizes automatic energy saving.In addition, user can freely arrange indoor temperature, and in the time that indoor temperature reaches setting value, central heating valve can be closed automatically, and stops charging, reaches and remains on the temperature that user sets thereby regulate the room temperature, and has solved the problem of the wasting of resources.The utility model can also adopt the mode of IC-card pre-payment, has solved the problem of heating charge difficulty, facilitates the management of heating department.

Accompanying drawing explanation

Fig. 1 is single chip circuit schematic diagram;

Fig. 2 is motor-drive circuit schematic diagram;

Fig. 3 is the wiring diagram of connector;

Fig. 4 is the wiring diagram of external interface;

Fig. 5 is single-chip microcomputer connects power supply circuit theory diagrams through pull-up resistor.

The specific embodiment

A kind of control circuit of heater control valve, comprising :-motor M 1, for opening and closing valve;-single-chip microcomputer U1, is STC15F104W-SOP8/DIP8, for receiving signal and controlling motor M 1 and rotate.Between the supply pin VCC of single-chip microcomputer and power supply lower margin GND, be connected with three shunt capacitance C1, C2 and C3, the OPEN pin (P3.1 pin) of single-chip microcomputer and CLOSE pin (P3.0 pin) be TXD1 pin (2 pin) and the RXD1 pin (1 pin) of connecting connector J1 respectively, and be connected to power supply VCC by pull-up resistor R4, R5 respectively, 3 pin of connector J1 meet power supply VCC, and 4 pin of connector J1 connect power supply ground.The OPEN pin of single-chip microcomputer meets out limit switch S2, CLOSE pin connects and closes limit switch S1, open limit switch S2 and close limit switch S1 earth, then be all connected to power supply VCC by pull-up resistor R2, R1, the DATA pin of single-chip microcomputer connects the control line of temperature controller, is connected to power supply VCC through pull-up resistor R3.The P3.4 pin of single-chip microcomputer and P3.5 pin do respectively OFF pin and ON pin, between ON pin and OFF pin, are motor-drive circuit.Described motor-drive circuit comprises two PMOS pipe Q1 and Q2, two NMOS manage Q3 and Q4, the drain electrode of the source electrode of the 2nd PMOS pipe Q2 and NMOS pipe Q3 is connected to 1 pin M+ of motor M 1 jointly, 2 pin M-of the motor M 1 that the source electrode of the one PMOS pipe Q1 is connected jointly with the drain electrode of the 2nd NMOS pipe Q4, are connected with capacitor C 4 between 1 pin M+ of motor M 1 and 2 pin M-.The source ground of two NMOS pipes, two PMOS pipes drain electrode connect power supply by a current-limiting resistance R6, the grid of the 2nd PMOS pipe Q2 and NMOS pipe Q3 is connected to OFF pin jointly, and the grid of a PMOS pipe Q1 and the 2nd NMOS pipe Q4 is connected to ON pin jointly.

Above-mentioned single-chip microcomputer P3.1 pin is as OPEN pin, and P3.3 pin is as CLOSE pin, and meets power supply VCC by pull-up resistor R2, R1 respectively, be with movable valve to close when motor M 1 and put in place, close limit switch S1 and disconnect, CLOSE pin is drawn high, now, single-chip microcomputer U1 controls motor stalling; The principle of opening limit switch S2 is identical with S1.The P3.2 pin of single-chip microcomputer connects temperature controller control line as DATA pin, received pulse or low and high level, and single-chip microcomputer is controlled and is opened or closed valve after processing.In the time that needs are opened valve, the output of ON pin is low, and the output of OFF pin is high, a PMOS pipe Q1 and NMOS pipe Q3 conducting, and motor rotates to exploitation direction; In the time of needs valve-off, the output of OFF pin is low, and the output of ON pin is high, the 2nd PMOS pipe Q2 and the 2nd NMOS pipe Q4 conducting, and motor rotates to closing valve direction.

Claims (5)

1. a control circuit of heater control valve, is characterized in that comprising:

-motor (M1), for opening and closing valve;

-single-chip microcomputer (U1), for receiving signal and controlling motor (M1) and rotate; The OPEN pin of single-chip microcomputer connects out limit switch (S2), CLOSE pin connects and closes limit switch (S1), drive limit switch (S2) and close limit switch (S1) earth, then be all connected to power supply (VCC) by pull-up resistor, the DATA pin of single-chip microcomputer connects the control line of temperature controller, being connected to power supply (VCC) through pull-up resistor, is motor-drive circuit between the ON pin of single-chip microcomputer and OFF pin.

2. control circuit of heater control valve according to claim 1, it is characterized in that: described motor-drive circuit comprises two PMOS pipes (Q1 and Q2), two NMOS pipes (Q3 and Q4), the drain electrode of the source electrode of the 2nd PMOS pipe (Q2) and NMOS pipe (Q3) is connected to the M+ pin of motor (M1) jointly, the source electrode of the one PMOS pipe (Q1) and the 2nd NMOS manages the M-pin of the common motor (M1) being connected of drain electrode of (Q4), the source ground of two NMOS pipes, two PMOS pipes drain electrode connect power supply by a current-limiting resistance, the grid of the 2nd PMOS pipe (Q2) and NMOS pipe (Q3) is connected to OFF pin jointly, the grid of the one PMOS pipe (Q1) and the 2nd NMOS pipe (Q4) is connected to ON pin jointly.

3. control circuit of heater control valve according to claim 1, is characterized in that: between the supply pin (VCC) of single-chip microcomputer and power supply lower margin (GND), be connected with three shunt capacitances.

4. according to the control circuit of heater control valve described in claim 1 or 2, it is characterized in that: between the M+ pin of motor (M1) and M-pin, be connected with electric capacity (C4).

5. control circuit of heater control valve according to claim 1, it is characterized in that: the TXD1 pin of single-chip microcomputer and RXD1 pin be TXD1 pin and the RXD1 pin of connecting connector (J1) respectively, and be connected to power supply (VCC) by pull-up resistor respectively, 3 pin of connector (J1) connect power supply (VCC), and 4 pin of connector (J1) connect power supply ground.

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