Household balance regulation and control device with temperature control panel

Abstract

The utility model discloses a household balance regulation and control device with a temperature control panel. The household balance regulation and control device comprises a user valve installed outdoors and the temperature control panel installed indoors. The user valve MBUS host communication circuit is in communication connection with the panel MBUS slave communication circuit through two signal lines, the panel MBUS slave communication circuit comprises a single-chip transceiver, two MBUS communication pins of the single-chip transceiver are correspondingly connected with the two signal lines respectively, and a power supply output end is used for supplying power to the temperature control panel. According to the utility model, only two signal lines need to be connected indoors, the wiring workload is greatly reduced, the two signal lines connected to the temperature control panel have no polarity requirement, communication and power supply are not influenced even if a user mistakenly and reversely connects the signal lines by accident, and the system has the advantages of convenient construction, good fault tolerance, high reliability, stable power supply and the like.

Description

Technical Field

[0001] This utility model relates to the field of pipeline network regulation, specifically to a device for household balance regulation using a temperature control panel. Background Technology

[0002] Household balancing control devices are mainly used for balancing control of households in the secondary heating network to achieve true thermal balance among users, reduce energy loss, and improve service quality.

[0003] The residential temperature control system mainly consists of a temperature control panel installed indoors and a valve installed outdoors. Users control and set parameters indoors via the temperature control panel, which is connected to the valve to adjust its opening degree. For example... Figure 1 The existing wiring method involves connecting the host computer to the temperature control panel via MBUS communication, and then the temperature control panel connects to the household valve via two signal lines via MBUS communication. Both the household valve and the temperature control panel require separate power supply connections. The drawback of this existing solution is that the wiring of the temperature control panel at the point of entry is overly complex, involving an MBUS bus for communication with the host computer, power supply lines, and an MBUS communication connection with the household valve, resulting in as many as six wiring groups. Because the temperature control panel is located indoors and requires entry wiring, the workload is substantial. Furthermore, if the user modifies the panel during renovation, wiring errors or short circuits can easily occur, affecting bus communication and causing malfunctions. Utility Model Content

[0004] This utility model proposes a household balance control device with a temperature control panel, the purpose of which is to solve the problem of complex wiring of indoor temperature control panels and easy communication failure under the condition of misoperation.

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

[0006] A residential balance control device with a temperature control panel includes an outdoor valve and an indoor temperature control panel. The outdoor valve includes a valve system power supply circuit for converting an external power source into the system power supply voltage required by the valve system. The outdoor valve includes a valve MBUS slave communication circuit, a valve MBUS master communication circuit, and a valve MBUS master power supply circuit. The temperature control panel includes a panel MBUS slave communication circuit.

[0007] The MBUS slave communication circuit of the valve is used for communication connection with the host computer.

[0008] The valve master communication circuit and the panel MBUS slave communication circuit are connected via two signal lines. The panel MBUS slave communication circuit includes a single-chip transceiver, whose two MBUS communication pins are respectively connected to the two signal lines, and the power output is used to power the temperature control panel.

[0009] The power supply circuit of the household valve MBUS host is connected to the power supply circuit of the household valve system and the communication circuit of the household valve MBUS host respectively, and is used to supply power to the communication circuit of the household valve MBUS host.

[0010] As a further improvement to the aforementioned household balance control device with a temperature control panel: the power supply circuit of the household valve system includes a rectifier bridge circuit, the input terminal of which is an external power supply interface, and the output terminal is used to output the rectified voltage.

[0011] The power supply circuit of the valve system also includes a system step-down circuit for stepping down the rectified voltage output by the rectifier bridge circuit to the system power supply voltage.

[0012] As a further improvement to the aforementioned residential balance control device with a temperature control panel: the power supply circuit of the residential valve MBUS main unit includes a power control circuit and a boost circuit;

[0013] The input terminal of the power control circuit is connected to the output terminal of the rectifier bridge circuit, the output terminal is connected to the power input terminal MBUSVIN of the boost circuit, and the control terminal is connected to the microcontroller of the valve.

[0014] The output of the boost circuit is used to power the MBUS host communication circuit of the valve.

[0015] As a further improvement to the aforementioned residential balance control device with a temperature control panel: the power control circuit includes an NPN transistor QC2 and a MOSFET QC1;

[0016] The base of NPN transistor QC2 is connected to the MBUS_EN power switch control terminal of the microcontroller through resistor RC3, the emitter is grounded, and the collector is connected to the input terminal of the power control circuit and the gate of MOSFET QC1 through resistor RC2. The source of MOSFET QC1 is connected to the input terminal of the power control circuit, and the drain is connected to the MBUSVIN power input terminal of the boost circuit as the output terminal of the power control circuit.

[0017] As a further improvement to the aforementioned household balance control device with a temperature control panel: the household valve MBUS host communication circuit includes a PNP transistor QM11. The emitter of the PNP transistor QM11 is connected to the output terminal of the boost circuit. A resistor is connected between the emitter and base of the PNP transistor QM11. The base is connected to the transceiver circuit of the household valve MBUS host communication circuit and is also grounded through a capacitor CM6. The collector of the PNP transistor QM11 is grounded through voltage divider resistors RM22 and RM24. The connection point between voltage divider resistors RM22 and RM24 is connected to the overcurrent detection signal input terminal GZ of the microcontroller through an inverter UM3.

[0018] As a further improvement to the aforementioned residential balance control device with a temperature control panel: the two signal lines MBUS+ and MBUS- are connected to the two MBUS communication pins BUSL1 and BUSL2 of the single-chip transceiver via protective resistors RS5 and RS4, respectively.

[0019] As a further improvement to the aforementioned residential balance control device with a temperature control panel: on the temperature control panel side, a transient voltage suppression diode TVS4 is also connected between the two signal lines MBUS+ and MBUS-, with the anode of the transient voltage suppression diode TVS4 connected to MBUS- and the cathode connected to MBUS+.

[0020] As a further improvement to the aforementioned residential balance control device with a temperature control panel: the power output terminal of the single-chip transceiver is grounded through capacitor CS1.

[0021] As a further improvement to the aforementioned residential balance control device with a temperature control panel: a tantalum capacitor CS6 is also connected in parallel on both sides of capacitor CS1.

[0022] As a further improvement to the aforementioned residential balance control device with a temperature control panel: the RIDD pin of the single-chip transceiver is connected to the ground terminal through a current-adjusting resistor RS3.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The indoor temperature control panel of this utility model is connected to the household valve as the master unit via MBUS communication. It uses a single-chip transceiver to draw power from the two signal lines of the MBUS communication connection to power itself. Therefore, only two signal lines need to be connected indoors, which greatly reduces the amount of wiring work and facilitates construction. Moreover, the two signal lines connected to the temperature control panel have no polarity requirements, so even if the user accidentally reverses the connection, it will not affect communication and power supply.

[0025] 2. This utility model detects the MBUS operating current in the MBUS host communication circuit of the user valve. When an overcurrent occurs, the power supply to the MBUS will be cut off through the power control circuit to prevent short circuit damage to the equipment.

[0026] 3. This utility model integrates a rectifier bridge circuit into the power supply circuit of the household valve system, supporting a wide voltage input and adapting to different on-site power supply environments, significantly improving the applicability of the equipment. Furthermore, since the rectifier bridge circuit itself adopts a non-polarity design, there are no requirements regarding the positive and negative terminals of the external power supply, avoiding equipment damage caused by incorrect power supply wiring.

[0027] 4. Adding a tantalum capacitor to the MBUS slave communication circuit of the panel can stabilize the system current. By appropriately increasing the power draw current with the current adjustment resistor RS3, the power supply stability of the panel system can be ensured. Attached Figure Description

[0028] Figure 1 Wiring diagram of an existing residential balance control device;

[0029] Figure 2 This is a wiring diagram of the present invention;

[0030] Figure 3 Circuit diagram of the power supply circuit for the household valve system;

[0031] Figure 4 Circuit diagram of the power supply circuit for the MBUS main unit of the customer valve;

[0032] Figure 5 The circuit diagram for the MBUS host communication circuit of the user valve;

[0033] Figure 6 The circuit diagram for the MBUS slave communication circuit of the user valve;

[0034] Figure 7 This is a circuit diagram of the panel MBUS slave communication circuit. Detailed Implementation

[0035] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings:

[0036] like Figure 2 A residential balance control device with a temperature control panel includes an outdoor valve and an indoor temperature control panel.

[0037] The valve includes a valve system power supply circuit, which is used to convert the external power supply into the system power supply voltage required by the valve system.

[0038] Specifically, such as Figure 3The power supply circuit of the valve system includes a rectifier bridge circuit. The rectifier bridge circuit uses an FMSB40M chip, with input terminals (pins 3 and 4) serving as an external power supply interface, which can be connected to an external DC power supply, AC power supply, or battery. The output terminal is used to output the rectified voltage.

[0039] The power supply circuit for the household valve system also includes a system step-down circuit for stepping down the rectified voltage output from the rectifier bridge circuit to the system power supply voltage. The system step-down circuit uses an SCT2650 chip; the VIN pin is connected to the output of the rectifier bridge circuit, and the SW pin outputs a VCC 3.3V power supply through a reactor to power the household valve system.

[0040] The valve also includes a valve MBUS slave communication circuit, a valve MBUS master communication circuit, and a valve MBUS master power supply circuit. The temperature control panel includes a panel MBUS slave communication circuit. For example... Figure 2 The user valve MBUS slave communication circuit is used to communicate with the host computer, and the user valve MBUS master communication circuit and the panel MBUS slave communication circuit are connected through two signal lines.

[0041] The power supply circuit of the household valve MBUS host is connected to the power supply circuit of the household valve system and the communication circuit of the household valve MBUS host respectively, and is used to supply power to the communication circuit of the household valve MBUS host.

[0042] Specifically, such as Figure 4 The MBUS host power supply circuit of the user valve includes a power control circuit and a boost circuit.

[0043] The input terminal of the power control circuit is connected to the output terminal of the rectifier bridge circuit, its output terminal is connected to the power input terminal MBUSVIN of the boost circuit, and its control terminal is connected to the microcontroller of the valve.

[0044] In this embodiment, the power control circuit includes an NPN transistor QC2 and a MOSFET QC1. The base of the NPN transistor QC2 is connected to the MBUS_EN power switch control terminal of the microcontroller via a resistor RC3, the emitter is grounded, and the collector is connected to the input terminal of the power control circuit and the gate of the MOSFET QC1 via a resistor RC2. The source of the MOSFET QC1 is connected to the input terminal of the power control circuit, and the drain serves as the output terminal of the power control circuit, connected to the MBUSVIN power input terminal of the boost circuit.

[0045] The boost circuit is based on the MC34063 chip. Its VIN pin is connected to the power input terminal MBUSVIN, and its SC pin outputs VCC32V voltage to power the MBUS host communication circuit of the valve.

[0046] When the microcontroller's MBUS power switch control terminal MBUS_EN is high, QC2 and QC1 are turned on, and the rectified voltage output from the rectifier bridge circuit is input to the power input terminal MBUSVIN, with the SC pin outputting VCC32V. When the microcontroller's MBUS power switch control terminal MBUS_EN is low, QC2 and QC1 are turned off, shutting off the power to the boost circuit. At this time, the microcontroller's MBUS host communication circuit loses power.

[0047] The structure of the MBUS host communication circuit is as follows: Figure 5 As shown in the diagram. It's important to note that this circuit includes a PNP transistor QM11. The emitter of the QM11 is connected to the output of the boost circuit. A resistor connects the emitter and base of the QM11. The base is connected to the transceiver circuit of the MBUS host communication circuit of the valve and is also grounded through capacitor CM6. The collector of the QM11 is grounded through voltage divider resistors RM22 and RM24. The connection point between RM22 and RM24 is connected to the overcurrent detection signal input terminal GZ of the microcontroller via inverter UM3. In this embodiment, UM3 is a dual-channel inverter. 1A-1Y is used to invert the RXDM signal to RXD2 for the microcontroller inside the valve to read, and 2A-2Y is used to invert the voltage signal obtained through the voltage divider resistors.

[0048] When a short circuit occurs at any point in the communication circuit between the valve and the temperature control panel, because the voltage of capacitor CM6 cannot change abruptly, the base voltage of QM11 remains unchanged. Therefore, the current through resistors RM20 and RM21 will increase, causing QM11 to conduct. The 2A pin of UM3 will then go high, and the microcontroller's overcurrent detection signal input GZ will receive a low-level signal. At this time, the microcontroller program can control MBUS_EN to pull it low, thereby cutting off the power supply to the boost circuit through the power control circuit. This de-energizes the valve's MBUS host communication circuit and disconnects it from the temperature control panel's MBUS connection. Since the temperature control panel's power supply also comes from the valve's MBUS connection, the temperature control panel will also be de-energized at this time.

[0049] like Figure 6 The MBUS slave communication circuit of the valve is based on the single-chip transceiver US1 (model TSS721A) and communicates with the internal microcontroller of the valve. The specific structure will not be described in detail.

[0050] like Figure 7The MBUS slave communication circuit structure of the panel is similar to that of the valve MBUS slave communication circuit, including a single-chip transceiver US2 (model TSS721A). Its two MBUS communication pins, BUSL1 and BUSL2, are connected to the two signal lines MBUS+ and MBUS- through protective resistors RS5 and RS4 respectively. The power output terminal VDD is used to provide VMC3.3V power to the temperature control panel. The single-chip transceiver US2 also communicates with the controller inside the temperature control panel.

[0051] Meanwhile, on the temperature control panel side, a transient voltage suppressor diode (TVS4) is connected between the two signal lines MBUS+ and MBUS-. The anode of the transient voltage suppressor diode TVS4 is connected to MBUS- and the cathode is connected to MBUS+, which is used to achieve high current protection.

[0052] The power output of the single-chip transceiver is grounded through capacitor CS1, with a tantalum capacitor CS6 connected in parallel across CS1. The RIDD pin of the single-chip transceiver is connected to ground through a current-adjusting resistor RS3. The smaller the resistance of RS3, the larger the charging current of CS6. When the system power supply is unstable, CS6 can discharge, reducing the flickering of the temperature control panel screen.

[0053] During installation, the external power supply to the valve and the MBUS communication connection between the host computer and the valve are established outdoors. Simultaneously, the MBUS master communication circuit of the valve and the MBUS slave communication circuit of the control panel are connected via two signal lines. This establishes the MBUS communication connection between the valve and the temperature control panel, as well as the power supply connection to the temperature control panel. Since the two signal lines between the valve and the temperature control panel have no polarity requirement, even reverse connection will not affect normal communication or the power supply to the temperature control panel.

Claims

1. A domestic balancing control device with a temperature control panel, comprising a domestic valve installed outdoors and a temperature control panel installed indoors, the domestic valve comprising a domestic valve system power supply circuit for converting an external power supply into a system power supply voltage required by the domestic valve system, characterized in that: The valve contains valve MBUS slave communication circuit, valve MBUS master communication circuit and valve MBUS master power supply circuit, and the temperature control panel contains panel MBUS slave communication circuit; The valve MBUS slave communication circuit is used for communication connection with the upper computer; The valve MBUS master communication circuit is in communication connection with the panel MBUS slave communication circuit through two signal lines; the panel MBUS slave communication circuit contains a single-chip transceiver, two MBUS communication pins of which are respectively connected with the two signal lines, and the power output end is used for power supply for the temperature control panel; The valve MBUS master power supply circuit is connected with the valve system power supply circuit and the valve MBUS master communication circuit respectively, and is used for power supply for the valve MBUS master communication circuit.

2. The residential balancing regulating device with temperature control panel according to claim 1, characterized in that: The valve system power supply circuit includes a rectifier bridge circuit, and the input end of the rectifier bridge circuit is an external power supply interface, and the output end is used for output of rectified voltage; The valve system power supply circuit further includes a system voltage reduction circuit used for reducing the rectified voltage output by the rectifier bridge circuit to the system power supply voltage.

3. The residential balancing control device with temperature controlled faceplate of claim 2, wherein: The valve MBUS master power supply circuit includes a power supply control circuit and a voltage boosting circuit; The input end of the power supply control circuit is connected with the output end of the rectifier bridge circuit, the output end is connected with the power input end MBUSVIN of the voltage boosting circuit, and the control end is connected with the single-chip microcomputer of the valve; The output end of the voltage boosting circuit is used for power supply for the valve MBUS master communication circuit.

4. The residential balancing control device with temperature controlled faceplate of claim 3, wherein: The power supply control circuit includes an NPN transistor QC2 and a MOS tube QC1; The base of the NPN transistor QC2 is connected with the MBUS power switch control end MBUS_EN of the single-chip microcomputer through a resistor RC3, the emitter is grounded, and the collector is connected with the input end of the power supply control circuit through a resistor RC2 and also connected with the gate of the MOS tube QC1; the source of the MOS tube QC1 is connected with the input end of the power supply control circuit, and the drain is connected with the power input end MBUSVIN of the voltage boosting circuit as the output end of the power supply control circuit.

5. A domestic balancing control device with temperature controlled faceplate as claimed in claim 3 or 4, characterised in that: The valve MBUS master communication circuit includes a PNP transistor QM11, the emitter of the PNP transistor QM11 is connected with the output end of the voltage boosting circuit, a resistor is connected between the emitter and the base of the PNP transistor QM11, the base is connected with the transceiver circuit of the valve MBUS master communication circuit and also grounded through a capacitor CM6; the collector of the PNP transistor QM11 is grounded through voltage dividing resistors RM22 and RM24, and the connection point between the voltage dividing resistors RM22 and RM24 is connected with the overcurrent detection signal input end GZ of the single-chip microcomputer through an inverter UM3.

6. The residential balancing control device with temperature controlled faceplate of claim 1, wherein: The two signal lines MBUS+ and MBUS- are respectively connected with two MBUS communication pins BUSL1 and BUSL2 of the single-chip transceiver through protection resistors RS5 and RS4.

7. The residential balancing control device with temperature controlled faceplate of claim 1, wherein: On the temperature control panel side, a transient voltage suppression diode TVS4 is further connected between the two signal lines MBUS+ and MBUS-, the anode of the transient voltage suppression diode TVS4 is connected with MBUS-, and the cathode is connected with MBUS+.

8. The residential balancing control device with temperature controlled faceplate of claim 1, wherein: The power output end of the single-chip transceiver is grounded through the capacitor CS1.

9. The residential balancing control device with temperature controlled faceplate of claim 8, wherein: The capacitor CS1 is also connected in parallel with the tantalum capacitor CS6 on both sides.

10. The residential balancing control device with temperature controlled faceplate of claim 1, wherein: The RIDD pin of the single-chip transceiver is connected to the ground end through the current regulating resistor RS3.

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