Intelligent heat supply unit valve utilizing solar energy

Abstract

The utility model discloses an intelligent heat supply unit valve utilizing solar energy, which comprises a shell and a valve core arranged in the shell, and a solar panel is arranged on the front side of the shell; and a motor, a battery and a circuit part are also arranged in the shell. And the circuit part comprises a main control chip, a power supply circuit, a motor control circuit, a temperature acquisition circuit and a communication module interface. According to the utility model, the battery is charged through solar energy, so that the frequency of external charging and battery replacement is reduced, and the workload of maintenance personnel is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating, and in particular relates to a heating unit valve. Background Art

[0002] Smart heating unit valve is an important component of smart heating system, usually installed in buildings, units, etc., to achieve balanced regulation of heating system.

[0003] At present, the intelligent heating unit valves used in the secondary heating network generally have the problem of difficult wiring, and most of them are installed at higher positions in outdoor pipelines, which requires a large amount of engineering work. Therefore, most unit valves are powered by batteries. However, the intelligent control of the secondary network consumes a lot of power, resulting in frequent replacement of batteries or charging, which is very inconvenient for maintenance. Utility Model Content

[0004] The utility model proposes an intelligent heating unit valve utilizing solar energy, and its purpose is to solve the problem of frequently replacing batteries or charging the intelligent heating unit valve.

[0005] The technical solution of this utility model is as follows:

[0006] A smart heating unit valve using solar energy, comprising a shell and a valve core installed in the shell, the shell also comprising a motor, the motor is connected to the valve core through a transmission mechanism, the shell is also provided with a battery and a circuit part, the circuit part comprises a main control chip, a power supply circuit, a motor control circuit, a temperature acquisition circuit and a communication module interface, the power supply circuit is connected to the battery, the battery is used to power the circuit part, the main control chip is connected to the motor control circuit, the temperature acquisition circuit and the communication module interface respectively, the motor control circuit is connected to the motor, and a solar panel is provided on the front side of the shell;

[0007] The circuit part also includes a solar charging circuit; the solar charging circuit includes a battery linear charger, the output terminal VSS1 of the solar panel is connected to the power input terminal VCC of the battery linear charger and grounded through a capacitor CS1, and the charging output terminal BAT of the battery linear charger is connected to the solar charging terminal BATS+ of the power circuit and grounded through a capacitor CS2;

[0008] In the power supply circuit, the solar charging terminal BATS+ is connected to the positive electrode of the diode DP2, and the negative electrode of the diode DP2 is connected to the positive electrode of the battery;

[0009] A through hole is provided at the center of the solar panel, a hexagon socket is provided in the through hole, and the hexagon socket is drivingly connected to the valve core.

[0010] As a further improvement of the intelligent heating unit valve using solar energy: the power supply circuit also includes a power supply connection terminal BAT+ and a ground terminal for connecting the positive and negative electrodes of the external power supply device respectively, the power supply connection terminal BAT+ is also connected to the positive electrode of the diode DP1, and the negative electrode of the diode DP1 is connected to the positive electrode of the battery;

[0011] The power supply circuit also includes a transient voltage suppressor tube TVS1, the cathode of the diode DP1 is connected to the cathode of the transient voltage suppressor tube TVS1, and the anode of the transient voltage suppressor tube TVS1 is connected to the ground terminal.

[0012] As a further improvement of the intelligent heating unit valve utilizing solar energy: the power supply circuit also includes a magnetic bead LT3 connected in parallel with the diode DP2.

[0013] As a further improvement of the smart heating unit valve utilizing solar energy: the power supply circuit also includes an external power supply detection terminal V2 for connecting to the input pin of the main control chip, and the external power supply detection terminal V2 is connected to the power supply connection terminal BAT+ through the resistor RP1 and is grounded through the resistor RP2.

[0014] As a further improvement of the intelligent heating unit valve utilizing solar energy: the power supply circuit also includes a voltage stabilizing chip, and the voltage input terminal VIN of the voltage stabilizing chip is connected to the positive electrode of the battery.

[0015] As a further improvement of the intelligent heating unit valve utilizing solar energy: the circuit part also includes a voltage detection circuit for detecting the battery voltage, and the voltage detection circuit is also connected to the main control chip.

[0016] As a further improvement of the intelligent heating unit valve using solar energy: the voltage detection circuit includes a detection control terminal BAT_OPEN connected to the output pin of the main control chip and a voltage detection terminal CHECK connected to the input pin of the main control chip, and also includes a transistor QT1 and a field effect transistor QT2;

[0017] The detection control terminal BAT_OPEN is connected to the base of the transistor QT1 through the resistor RC3, the emitter of the transistor QT1 is grounded, and the collector of the transistor QT1 is connected to the gate of the field effect transistor QT2; the source of the field effect transistor QT2 is connected to the positive electrode of the battery and is also connected to the gate of the field effect transistor QT2 through the resistor RC4, the drain of the field effect transistor QT2 is grounded through the series-connected resistors RC1 and RC2, and the connection point between the resistors RC1 and RC2 is the voltage detection terminal CHECK.

[0018] As a further improvement of the smart heating unit valve utilizing solar energy: the circuit part also includes a valve detection circuit, the valve detection circuit includes an upper limit switch and a lower limit switch for detecting whether the valve core has reached the limit angle, and also includes a potentiometer, the active pin of the potentiometer is connected to the valve core and is used to detect the angle of the valve core.

[0019] As a further improvement of the intelligent heating unit valve utilizing solar energy: a display screen is also provided on the front side of the shell, and the circuit part also includes a display circuit connected to the display screen, and the display circuit is also connected to the main control chip.

[0020] As a further improvement of the intelligent heating unit valve utilizing solar energy: the circuit part also includes a Bluetooth circuit connected to the main control chip.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The utility model charges the battery through solar energy, which reduces the frequency of external charging and battery replacement and reduces the workload of maintenance personnel.

[0023] 2. The solar panel is arranged on the front side of the shell, and the hexagon socket of the manual control valve core is located in the through hole on the solar panel. This layout design can maximize the area of ​​the solar panel, make full use of solar energy resources, and improve charging efficiency.

[0024] 3. The diodes DP1 and DP2 in the power supply circuit can prevent the battery from outputting in reverse. At the same time, TVS1 can prevent damage to the battery and solar panel when the positive and negative poles of the external power supply are connected in reverse, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a block diagram of the circuit part of the utility model;

[0026] Figure 2 This is a front view of the product of the utility model;

[0027] Figure 3 The schematic diagram of the solar charging circuit;

[0028] Figure 4 This is the schematic diagram of the power supply circuit;

[0029] Figure 5 is the schematic diagram of the voltage detection circuit;

[0030] Figure 6 This is the schematic diagram of the motor control circuit;

[0031] Figure 7 This is the schematic diagram of the valve detection circuit;

[0032] Figure 8 This is the schematic diagram of the communication module interface part;

[0033] Fig. 9 This is the schematic diagram of the Bluetooth circuit;

[0034] Fig.10 This is the schematic diagram of the temperature acquisition circuit;

[0035] Fig.11 Schematic diagram of the interface circuit reserved for pressure;

[0036] Fig.12 A schematic diagram showing the circuit. DETAILED DESCRIPTION

[0037] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.

[0038] like Figure 1 and 2 , a smart heating unit valve utilizing solar energy, comprising a shell and a valve core installed in the shell.

[0039] The housing also includes a motor, which is connected to the valve core through a transmission mechanism (gear set) to drive the valve core to rotate and control the switch and opening size of the valve.

[0040] The housing is also provided with a battery and a circuit part, wherein the battery is used to supply power to the circuit part.

[0041] The circuit part includes a main control chip (model HC32L196MCTA) and a solar charging circuit, a power supply circuit, a voltage detection circuit, a motor control circuit, a valve detection circuit, a communication module interface, a Bluetooth circuit, a temperature acquisition circuit, a pressure reserve interface circuit and a display circuit, which are respectively connected to the main control chip.

[0042] The front side of the housing is provided with a solar panel 3 for converting solar energy into electrical energy. A through hole is provided at the center of the solar panel 3, in which a hexagon socket is provided, which is transmission-connected to the valve core, and the valve can be manually opened and closed by a wrench.

[0043] like Figure 3, the solar charging circuit includes a battery linear charger (model FS4054ALT1), the output terminal VSS1 of the solar panel 3 is connected to the power input terminal VCC of the battery linear charger, and is grounded through the capacitor CS1. The charging output terminal BAT of the battery linear charger is connected to the solar charging terminal BATS+ of the power circuit, and is grounded through the capacitor CS2. The charging output terminal BAT is used to charge the battery. When the voltage is between 2.9 and 4.1V, the battery constant current charging ensures fast full charging; when the voltage is between 4.1V and 4.2V, the battery constant voltage charging reduces the voltage drop caused by the internal resistance, so that the battery can be fully charged as much as possible; when the battery voltage is lower than 2.9V, the charging speed is too fast and may affect the battery life, so the FS4054ALT1 charging chip will enter the trickle charging mode, and the charging current in this mode is reduced to 0.1 times (the chip supports a maximum trickle charging of 50mA, that is, a maximum charging speed of 500mA).

[0044] Furthermore, the CHRG pin of the battery linear charger is connected to the cathode of the light emitting diode LS1, the anode of the light emitting diode LS1 is connected to the output terminal VSS1 of the solar panel 3 through the resistor RS1, and the CHRG pin of the battery linear charger is also connected to the input pin of the main control chip. When the charger charges the battery, the CHRG pin is pulled to a low level by the internal switch. If the solar panel 3 can output voltage at this time, the light emitting diode LS1 lights up to indicate that charging is in progress. When charging is completed, the CHRG pin is in a high impedance state and the light emitting diode LS1 is off. The main control chip can determine whether charging is currently in progress based on the state of the CHRG pin.

[0045] like Figure 4 In the power supply circuit, the solar charging terminal BATS+ is connected to the positive electrode of the diode DP2, and the negative electrode of the diode DP2 is connected to the positive electrode of the battery. The power supply circuit also includes a magnetic bead LT3 connected in parallel with the diode DP2.

[0046] Furthermore, the power supply circuit also includes a power supply connection terminal BAT+ and a ground terminal for connecting the positive and negative electrodes of the external power supply device respectively, and the power supply connection terminal BAT+ is also connected to the positive electrode of the diode DP1, and the negative electrode of the diode DP1 is connected to the positive electrode of the battery, and the battery can also be charged when the external power supply device is connected. The diodes DP1 and DP2 can prevent the battery from being reversely charged.

[0047] The power supply circuit also includes a transient voltage suppressor TVS1, the cathode of the diode DP1 is connected to the cathode of the transient voltage suppressor TVS1, and the anode of the transient voltage suppressor TVS1 is connected to the ground terminal, which can prevent the solar panel 3 and the battery from being damaged when the external power supply device is connected in reverse.

[0048] The power supply circuit also includes an external power supply detection terminal V2 connected to the input pin of the main control chip. The external power supply detection terminal V2 is connected to the power supply connection terminal BAT+ through a resistor RP1 and is grounded through a resistor RP2. The main control chip can determine whether an external power supply device is involved through the external power supply detection terminal V2.

[0049] Furthermore, the power supply circuit also includes a voltage stabilizing chip (model: ME6214A33PG), the voltage input terminal VIN of the voltage stabilizing chip is connected to the positive electrode (3.6V) of the battery, and the voltage output terminal VOUT of the voltage stabilizing chip is used to provide 3.3V power supply for other circuits.

[0050] Furthermore, if Figure 5 The circuit part also includes a voltage detection circuit for detecting the battery voltage, and the voltage detection circuit is also connected to the main control chip.

[0051] Specifically, the voltage detection circuit includes a detection control terminal BAT_OPEN connected to the output pin of the main control chip and a voltage detection terminal CHECK connected to the input pin of the main control chip, and also includes a transistor QT1 and a field effect transistor QT2.

[0052] The detection control terminal BAT_OPEN is connected to the base of the transistor QT1 through the resistor RC3, the emitter of the transistor QT1 is grounded, and the collector of the transistor QT1 is connected to the gate of the field effect transistor QT2. The source of the field effect transistor QT2 is connected to the positive electrode of the battery and is also connected to the gate of the field effect transistor QT2 through the resistor RC4. The drain of the field effect transistor QT2 is grounded through the series resistors RC1 and RC2, and the connection point between the resistors RC1 and RC2 is the voltage detection terminal CHECK.

[0053] The main control chip controls whether to detect the battery voltage through the detection control terminal BAT_OPEN, and obtains the voltage detection signal through the voltage detection terminal CHECK.

[0054] like Figure 6 The motor control circuit shown is used to control the rotation of the motor according to the signal of the main control chip, so as to achieve the purpose of controlling the opening and closing of the valve.

[0055] like Figure 7The valve detection circuit shown includes an upper limit switch and a lower limit switch for detecting whether the valve core has reached the limit angle, and also includes a potentiometer. The movable pin of the potentiometer is connected to the valve core and is used to detect the angle of the valve core. When working, the main control chip first controls the motor to turn from the upper limit to the lower limit, and obtains the AD value range of the potentiometer within the range of the upper limit to the lower limit. This range is considered to be the value corresponding to the valve opening of 0-100. Therefore, when it is necessary to control the valve to turn to a certain scale, the main control chip can determine whether it is turned to the right position by detecting the AD value of the potentiometer.

[0056] like Figure 8 The communication module interface shown is compatible with 485, MBUS, NB, 4G and other communication modes, and adopts a modular design.

[0057] like Fig. 9 The Bluetooth circuit shown controls the Bluetooth power supply through the power control circuit composed of QC9 and QC10, thereby controlling the power consumption. In this embodiment, ZX-D30 is selected as the Bluetooth main module, which has a low power consumption design, supports receiving data from the slave, and can support APP and small program development.

[0058] like Fig.10 The temperature acquisition circuit shown has two channels of temperature acquisition.

[0059] like Fig.11 The pressure reserve interface circuit shown can support the expansion of two-way pressure acquisition.

[0060] like Figure 2 A display screen 1 is also provided on the front side of the housing. Fig.12 The display circuit shown is connected to the main control chip.

[0061] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. A smart heating unit valve using solar energy, comprising a housing and a valve core installed in the housing, the housing also comprising a motor, the motor is connected to the valve core through a transmission mechanism, the housing is also provided with a battery and a circuit part, the circuit part comprises a main control chip, a power supply circuit, a motor control circuit, a temperature acquisition circuit and a communication module interface, the power supply circuit is connected to the battery, the battery is used to power the circuit part, the main control chip is connected to the motor control circuit, the temperature acquisition circuit and the communication module interface respectively, the motor control circuit is connected to the motor, and the characteristics are: A solar panel (3) is provided on the front side of the shell; The circuit part also includes a solar charging circuit; the solar charging circuit includes a battery linear charger, the output terminal VSS1 of the solar panel (3) is connected to the power input terminal VCC of the battery linear charger and is grounded through a capacitor CS1, the charging output terminal BAT of the battery linear charger is connected to the solar charging terminal BATS+ of the power circuit and is grounded through a capacitor CS2; In the power supply circuit, the solar charging terminal BATS+ is connected to the positive electrode of the diode DP2, and the negative electrode of the diode DP2 is connected to the positive electrode of the battery; A through hole is provided at the center of the solar panel (3), a hexagon socket is provided in the through hole, and the hexagon socket is drivingly connected to the valve core.

2. The intelligent heating unit valve using solar energy as claimed in claim 1, characterized in that: The power supply circuit also includes a power supply connection terminal BAT+ and a ground terminal for connecting the positive electrode and the negative electrode of the external power supply device respectively. The power supply connection terminal BAT+ is also connected to the positive electrode of the diode DP1, and the negative electrode of the diode DP1 is connected to the positive electrode of the battery; The power supply circuit also includes a transient voltage suppressor tube TVS1, the cathode of the diode DP1 is connected to the cathode of the transient voltage suppressor tube TVS1, and the anode of the transient voltage suppressor tube TVS1 is connected to the ground terminal.

3. The intelligent heating unit valve using solar energy as claimed in claim 2, characterized in that: The power supply circuit also includes a magnetic bead LT3 connected in parallel with the diode DP2.

4. The intelligent heating unit valve using solar energy as claimed in claim 2, characterized in that: The power supply circuit further includes an external power supply detection terminal V2 for connecting to an input pin of the main control chip. The external power supply detection terminal V2 is connected to the power supply connection terminal BAT+ through a resistor RP1 and is grounded through a resistor RP2.

5. The intelligent heating unit valve using solar energy as claimed in claim 1, characterized in that: The power supply circuit also includes a voltage stabilizing chip, and a voltage input terminal VIN of the voltage stabilizing chip is connected to the positive electrode of the battery.

6. The intelligent heating unit valve using solar energy as claimed in claim 1, characterized in that: The circuit part also includes a voltage detection circuit for detecting the battery voltage, and the voltage detection circuit is also connected to the main control chip.

7. The intelligent heating unit valve using solar energy as claimed in claim 6, characterized in that: The voltage detection circuit includes a detection control terminal BAT_OPEN connected to the output pin of the main control chip and a voltage detection terminal CHECK connected to the input pin of the main control chip, and also includes a transistor QT1 and a field effect transistor QT2; The detection control terminal BAT_OPEN is connected to the base of the transistor QT1 through the resistor RC3, the emitter of the transistor QT1 is grounded, and the collector of the transistor QT1 is connected to the gate of the field effect transistor QT2; the source of the field effect transistor QT2 is connected to the positive electrode of the battery and is also connected to the gate of the field effect transistor QT2 through the resistor RC4, the drain of the field effect transistor QT2 is grounded through the series-connected resistors RC1 and RC2, and the connection point between the resistors RC1 and RC2 is the voltage detection terminal CHECK.

8. The intelligent heating unit valve using solar energy as claimed in claim 1, characterized in that: The circuit part also includes a valve detection circuit, which includes an upper limit switch and a lower limit switch for detecting whether the valve core has reached a limit angle, and also includes a potentiometer, the active pin of the potentiometer is connected to the valve core and is used to detect the angle of the valve core.

9. The intelligent heating unit valve using solar energy as claimed in claim 1, characterized in that: A display screen (1) is also provided on the front side of the housing, and the circuit part further comprises a display circuit connected to the display screen (1), and the display circuit is also connected to the main control chip.

10. The intelligent heating unit valve using solar energy according to any one of claims 1 to 9, characterized in that: The circuit part also includes a Bluetooth circuit connected to the main control chip.

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