Management system of power-free digital control valve

Abstract

The invention relates to the field of valve control, in particular to a management system of a power-free digital control valve. When the valve needs to be driven, the power supply in the handheld device drives the control unit, the driving device and the valve body in the valve, in this way, waste of electric energy can be greatly reduced, and when the handheld device is not connected with the connecting device, the state of the valve body in the valve is kept in an opening and closing state during power failure; compared with a traditional electronic valve provided with a 4G communication module and the like, the electronic valve has the advantages that the price is lower, the encryption communication mode of the handheld device and the control unit is further adopted, the safety of data communication between the handheld device and the control unit is guaranteed, and the safety of data communication between the handheld device and the control unit is improved. Further identifying whether the valve is opened and closed abnormally or not by acquiring the opening record and the closing record; the problems of electric energy waste, high cost or misoperation in an unmanned scene of an existing electronic valve are solved.

Description

Technical Field

[0001] The invention relates to the field of valve control, in particular to a management system for power-free digital control valves. Background Art

[0002] It is known that existing valves mainly include traditional mechanical valves and electronic valves. Electronic valves all require integrated power supplies to power the valve control unit, which results in the following deficiencies in various current electronic valves: 1. The battery or external power supply in the electronic valve needs to be powered all the time, that is, no matter what state the valve is in, the power supply in the valve needs to be powered all the time. The battery usually has a short service life, resulting in increased maintenance and valve costs and energy waste; 2. When the power supply in the electronic valve is abnormal in an unmanned scenario, it will cause the valve to operate incorrectly; 3. Some intelligent electronic valves integrate communication modules such as 4G, which can achieve effective safety control and use management of the valve, but the cost is relatively high. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a management system for power-free digital control valves, which solves the problems of existing electronic valves such as power waste, high cost or misoperation in unmanned scenarios.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A management system for a power-free digital control valve includes a valve and a driving device for driving a valve body in the valve, and also includes:

[0006] A control unit, the control unit is used to output the control signal and power output by the handheld device to the drive device, and control the drive device to send a drive signal for driving the valve body in the valve to move;

[0007] A handheld device, which is used to exchange data with the control unit and send control signals, and to provide power to the control unit and the valve;

[0008] A connecting device is used to establish data communication and power interaction between the control unit and the handheld device.

[0009] Preferably, the control unit comprises:

[0010] MCU, the MCU is used to receive the control signal output by the handheld device, and control the driving device to send a driving signal for driving the valve body in the valve according to the control signal;

[0011] A protection circuit, the protection circuit is used to limit the power supply voltage output from the handheld device to the MCU and filter it;

[0012] The control circuit is used to control the driving device to send a driving signal for driving the valve body in the valve to move according to the output signal of the MCU.

[0013] Preferably, the protection circuit includes a resistor R1, a resistor R3 and a Zener diode D2. The resistor R3 and the Zener diode D2 are connected in parallel and in series with the resistor R1. The resistor R1 is connected to the power supply VCC. The output end of the Zener diode D2 is connected to the VDD port of the MCU and between the resistor R1 and the resistor R3. The VDD port of the MCU is connected to grounded capacitors C1 and C2.

[0014] Preferably, the control circuit comprises a resistor R2, a resistor R4 and a MOS tube U1 which are sequentially connected between the MCU and the driving device, and the driving device 2 is connected to a power source VCC.

[0015] Preferably, a voltage stabilizing diode D1 connected in parallel with the driving device is connected between the MOS tube U1 and the power supply VCC, and an output end of the voltage stabilizing diode D1 is connected to the power supply VCC.

[0016] Preferably, the specific steps for the handheld device to perform data exchange with the control unit and send control signals are:

[0017] S1. Connect the handheld device to the connecting device;

[0018] S2, the handheld device sends a control signal encrypted by a key to the control unit;

[0019] S3, the control unit decrypts the control signal using the communication key;

[0020] S4, judging whether it is a valid request according to the decrypted control signal;

[0021] If so, the control unit outputs a corresponding response signal according to the control signal, and the response signal is used to control the driving device or output corresponding storage data to the handheld device;

[0022] If not, then end.

[0023] Preferably, the control signal includes opening a valve, closing a valve, obtaining an opening record, and obtaining a closing record.

[0024] Preferably, in step S4, the following steps are specifically included:

[0025] S41, setting a number of executable operation signals stored in the control unit;

[0026] S42, judging whether the decrypted control signal is a valid request according to whether it is an operation signal;

[0027] If yes, the control signal is a valid request and proceeds to the next step;

[0028] If not, then end;

[0029] S43, the control unit outputs a corresponding response signal according to the effective request signal, and the response signal is used to control the driving device or output corresponding storage data to the handheld device.

[0030] Compared with the prior art, the present invention provides a management system for power-free digital control valves, which has the following beneficial effects:

[0031] 1. The present invention is provided with a handheld device equipped with a power supply. When the valve needs to be driven, the power supply in the handheld device drives the control unit, the driving device and the valve body in the valve, so that the waste of electric energy can be greatly reduced. When the handheld device is not connected to the connecting device, the state of the valve body in the valve is maintained at the open and closed state when the power is off, thereby avoiding malfunction of the valve when there is no power supply. Compared with the traditional electronic valve equipped with a communication module such as 4G, the price is lower.

[0032] 2. The present invention can control the voltage and current of the power supply input to the MCU and the drive device through the protection circuit and the control circuit, thereby protecting the MCU and the drive device and avoiding damage to them under the power supply of inappropriate current or voltage, so as to ensure the stable operation of the MCU and the drive device.

[0033] 3. The present invention further adopts a method of encrypted communication between the handheld device and the control unit to ensure the security of data communication between the handheld device and the control unit, thereby reducing the probability of a specific valve being cracked and controlled by others, and by obtaining the opening and closing records, it can further identify whether the valve is abnormally opened and closed during use, thereby ensuring the safety of the valve use. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0035] Figure 1 It is a structural block diagram of the management system of the power-free digital control valve of the present invention;

[0036] Figure 2 is a circuit diagram of a control unit of the present invention;

[0037] Figure 3 The present invention is a flow chart of data interaction and control signal transmission between the handheld device and the control unit.

[0038] In the figure: 1. valve; 2. drive device; 3. control unit; 31. MCU; 32. protection circuit; 33. control circuit; 4. handheld device; 5. connecting device. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0040] Those skilled in the art can understand that all or part of the steps in the following embodiments can be completed by instructing the relevant hardware through a program, so the present application can be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application can be in the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0041] In order to solve the problems of power waste, high cost or misoperation in unmanned scenes in existing electronic valves, the present invention provides a management system for power-free digital control valves. On the one hand, because there is no power supply, energy waste can be reduced and misoperation in unmanned scenes will not occur, and the cost is relatively lower. Figure 1-Figure 3 As shown, it includes a valve 1 and a driving device 2 for driving the valve body in the valve 1. The driving device 2 can be a motor or a magnetic device, etc., to control the opening and closing of the valve body by driving the motor or generating a magnetic force with an electromagnet, etc., and also includes:

[0042] A control unit 3 for outputting the control signal and power output by the handheld device 4 to the drive device 2, and controlling the drive device 2 to send a drive signal for driving the valve body in the valve 1 to move; a handheld device 4 for exchanging data with the control unit 3 and sending control signals, and providing power for the control unit 3 and the valve 1; a connecting device 5 for establishing data communication and power exchange between the control unit 3 and the handheld device 4. When not in use, the valve body in the valve 1 remains in the open or closed state when the power is off, and the valve 1 is not powered on at this time, so it is difficult to change the position of the valve body in the valve 1 without power, thereby changing the open or closed state of the valve 1. Therefore, there is no waste of electric energy and misoperation. When it is needed, the handheld device 4 is connected to the control unit 3 through the connecting device 5 as a connecting port, so that the valve 1 is powered on. Then, the corresponding control signal can be output through the handheld device 4. After the control unit 3 recognizes the control signal, the control unit 3 controls the driving device 2 to send a driving signal for driving the valve body in the valve 1, that is, the control unit 3 drives the motor or magnetic device to make the valve body open and close, thereby realizing the control of the valve 1. The whole process is more energy-saving, and there is no misoperation when not in use. In addition, the cost is lower than that of electronic valves with integrated communication modules such as 4G.

[0043] The control unit 3 recognizes the control signal output by the handheld device 4, processes the control signal, controls the drive device 2 to send a drive signal for driving the valve body in the valve 1, and transmits electrical energy to the drive device 2 and the valve 1. The unit is composed of the following parts:

[0044] An MCU31 is used to receive a control signal output by a handheld device 4, and control the drive device 2 to send a drive signal for driving the valve body in the valve 1 according to the control signal; a protection circuit 32 is used to limit the power supply voltage output from the handheld device 4 to the MCU31 and filter it to ensure the voltage and current of the electric energy input to the MCU, thereby avoiding damage to the MCU31 by the electric energy; a control circuit 33 is used to control the drive device 2 to send a drive signal for driving the valve body in the valve 1 according to the output signal of the MCU31, and the control circuit 33 is used to control the drive device through the control circuit 33 according to the control signal input to the MCU31, thereby driving the valve body to produce different actions.

[0045] In order to further illustrate the structure of the protection circuit 32 so as to realize the control of the current and voltage of the electric energy of the power supply input to the MCU31, the protection circuit 32 includes a resistor R1, a resistor R3 and a Zener diode D2. The resistor R3 and the Zener diode D2 are connected in parallel and then connected in series with the resistor R1. The resistor R1 is connected to the power supply VCC. The output end of the Zener diode D2 is connected to the VDD port of the MCU31 and between the resistor R1 and the resistor R3. The VDD port of the MCU31 is connected with grounded capacitors C1 and C2. The resistor R1, the resistor R3 and the parallel Zener diode D2 process the power provided by the handheld device 4 to prevent the excessively high voltage power supply from damaging the microprocessor MCU31. Then, the power provided by the handheld device 4 is filtered in cooperation with the capacitors C1 and C2 to ensure that the MCU31 obtains a stable working current.

[0046] The control circuit 33 controls the driving device 2. According to different instructions, electrical signals are sent to different control circuits 33, so that different control circuits 33 control the driving device to send different driving signals. The control circuit 33 includes a resistor R2, a resistor R4 and a MOS tube U1 connected between the MCU 31 and the driving device 2 in sequence. The driving device 2 is connected to the power supply VCC. Figure 2 2 shows two control circuits 33 respectively connected to the 5th and 6th pins of the MCU, so as to control the opening or closing of the valve body by sending a driving signal through the driving device 2.

[0047] In order to prevent the voltage provided by MCU31 to the driving device 2 from being too high, a voltage zener diode D1 connected in parallel with the driving device 2 is connected between the MOS tube U1 and the power supply VCC, and the output end of the voltage zener diode D1 is connected to the power supply VCC.

[0048] In order to improve the security of the management system and prevent the control unit 3 from being cracked by others to control the valve body in the valve 1, a key is set to improve security. The specific steps for the handheld device 4 to interact with the control unit 3 and send control signals are as follows:

[0049] S1, connecting the handheld device 4 to the connecting device 5, at which time the power supply in the handheld device 4 supplies power to the control unit 3, the driving device 2 and the valve 1;

[0050] S2, the handheld device 4 sends a control signal encrypted by a key to the control unit 3;

[0051] S3, the control unit 3 decrypts the control signal through the communication key. The control signal may include four types: opening valve 1, closing valve 1, obtaining opening records and obtaining closing records. By obtaining opening records and obtaining closing records, it can be found whether the valve 1 is abnormally opened or closed, so as to take timely countermeasures;

[0052] S4, judging whether it is a valid request according to the decrypted control signal;

[0053] If so, the control unit 3 outputs a corresponding response signal according to the control signal, and the response signal is used to control the driving device 2 or output corresponding storage data to the handheld device 4;

[0054] If not, then end.

[0055] To further illustrate the setting and identification method of a valid request, step S4 specifically includes the following steps:

[0056] S41, setting a number of executable operation signals stored in the control unit 3, such as setting four operation signals of opening valve 1, closing valve 1, obtaining opening records and obtaining closing records. The operation signal can be set with a corresponding code. When the input control signal belongs to the code corresponding to the operation signal, the two-way authentication process can be realized;

[0057] S42, judging whether the decrypted control signal is a valid request according to whether it is an operation signal;

[0058] If yes, the control signal is a valid request and proceeds to the next step;

[0059] If not, then end;

[0060] S43, the control unit 3 outputs a corresponding response signal according to the valid request signal, and the response signal is used to control the drive device 2 or output the corresponding storage data to the handheld device 4. After the authentication is passed, the handheld device 4 can obtain the unique identification feature information of the power-free safety digital valve 1, and then perform operations such as valve control and acquisition of management information.

[0061] The above implementation methods have been described in detail. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A management system for a power-free digital control valve, comprising a valve (1), and a driving device (2) for driving a valve body in the valve (1), characterized in that: Also includes: A control unit (3), the control unit (3) being used to output the control signal and power output by the handheld device (4) to the drive device (2), and to control the drive device (2) to send a drive signal for driving the valve body in the valve (1) to move; A handheld device (4), the handheld device (4) being used to perform data exchange with the control unit (3) and send control signals, and to provide power to the control unit (3) and the valve (1); A connecting device (5), wherein the connecting device (5) is used to establish data communication and power interaction between the control unit (3) and the handheld device (4).

2. The management system according to claim 1, characterized in that: The control unit (3) comprises: MCU (31), the MCU (31) is used to receive a control signal output by the handheld device (4), and control the driving device (2) to send a driving signal for driving the valve body in the valve (1) to move according to the control signal; A protection circuit (32), the protection circuit (32) is used to limit the power supply voltage output from the handheld device (4) to the MCU (31) and perform filtering processing; A control circuit (33) is used to control the drive device (2) to send a drive signal for driving the valve body in the valve (1) to move according to the output signal of the MCU (31).

3. The management system according to claim 2, characterized in that: The protection circuit (32) comprises a resistor R1, a resistor R3 and a voltage-stabilizing diode D2. The resistor R3 and the voltage-stabilizing diode D2 are connected in parallel and then in series with the resistor R1. The resistor R1 is connected to a power source VCC. The output end of the voltage-stabilizing diode D2 is connected to a VDD port of the MCU (31) and between the resistor R1 and the resistor R3. The VDD port of the MCU (31) is connected to grounded capacitors C1 and C2.

4. The management system according to claim 2, characterized in that: The control circuit (33) comprises a resistor R2, a resistor R4 and a MOS tube U1 which are sequentially connected between the MCU (31) and the driving device (2); the driving device (2) is connected to a power source VCC.

5. The management system according to claim 4, characterized in that: A voltage stabilizing diode D1 connected in parallel with the driving device (2) is connected between the MOS tube U1 and the power supply VCC, and the output end of the voltage stabilizing diode D1 is connected to the power supply VCC.

6. The management system according to claim 1, characterized in that: The specific steps of the handheld device (4) being used to perform data exchange with the control unit (3) and send control signals are as follows: S1, connecting the handheld device (4) to the connecting device (5); S2, the handheld device (4) sends a control signal encrypted by a key to the control unit (3); S3, the control unit (3) decrypts the control signal using the communication key; S4, judging whether it is a valid request according to the decrypted control signal; If so, the control unit (3) outputs a corresponding response signal according to the control signal, wherein the response signal is used to control the driving device (2) or output corresponding stored data to the handheld device (4); If not, then end.

7. The management system according to claim 6, characterized in that: The control signal includes opening the valve (1), closing the valve (1), obtaining an opening record and obtaining a closing record.

8. The management system according to claim 6, characterized in that: In step S4, the following steps are specifically included: S41, setting a plurality of executable operation signals stored in the control unit (3); S42, judging whether the decrypted control signal is a valid request according to whether it is an operation signal; If yes, the control signal is a valid request and proceeds to the next step; If not, then end; S43, the control unit (3) outputs a corresponding response signal according to the effective request signal, wherein the response signal is used to control the drive device (2) or output corresponding stored data to the handheld device (4).

Images