A bus type motor valve and motor valve control system

Abstract

The utility model relates to a bus-type motor valve and a motor valve control system. The bus-type motor valve comprises: a control module; a slave communication module, the slave communication module is connected to the control module, and the slave communication module is used to receive a signal sent by a communication bus; a motor drive module, the motor drive module is connected to the control module; and a motor, the driving end of the motor is connected to the motor drive module. By adding a slave communication module as a demodulation unit in the bus-type motor valve, the bus-type motor valve is connected to the communication bus through the slave communication module, and then connected to the controller through the communication bus. Only two communication buses are needed between the bus-type motor valve and the controller, and all the bus-type motor valves are connected in parallel to the communication bus, so that the number of bus-type motor valves connected is no longer limited by the control interface of the controller. At the same time, the bus-type motor valve is connected to the controller through the communication bus, which can realize the remote control of the bus-type motor valve.

Description

Technical Field

[0001] The present application relates to the technical field of motor valves, and in particular to a bus-type motor valve and a motor valve control system. Background Art

[0002] The motor valve is also called "electric valve". The main difference between the solenoid valve and the motor valve is that the motor valve can not only control the opening and closing of the valve, but also adjust the size of the valve opening and closing amount. It is usually used as a pipeline reversing middleware and has a wide range of application scenarios. The motor valve is suitable for some special process requirements, such as leakage, special fluid media, etc. Therefore, the quality requirements of the motor valve itself are relatively high. The solenoid valve can be remotely controlled to meet different application scenarios.

[0003] The traditional motor valve needs to be directly connected to the controller to realize its switch, such as the waterproof motor valve disclosed in the existing technical solution 202321311604.9, which adopts Figure 1 The control system of the traditional motor valve shown in the figure, when it is necessary to control multiple motor valves, the motor valves need to be connected to different control interfaces of the controller. The controller can only drive one, and each motor valve requires a control interface to control its switch. The control interface of the existing controller is limited, resulting in the number of controlled motor valves being limited; at the same time, the wired control between the controller and the motor valve can only achieve short-distance control. Utility Model Content

[0004] In view of the above problems, the present application provides a bus-type motor valve and a motor valve control system to solve the problem that traditional motor valves need to be directly connected to the controller, the number of motor valves is limited by the control interface of the controller, and only short-distance control can be achieved.

[0005] To achieve the above object, the inventor provides a bus-type motor valve, comprising:

[0006] Control module;

[0007] A slave communication module, the slave communication module is connected to the control module, and the slave communication module is used to receive a signal sent by a communication bus;

[0008] A motor drive module, wherein the motor drive module is connected to the control module;

[0009] A motor, wherein a driving end of the motor is connected to the motor driving module.

[0010] In some embodiments, the slave communication module includes:

[0011] A rectifier bridge, wherein an input end of the rectifier bridge is connected to a communication bus;

[0012] A voltage divider circuit, the voltage divider circuit comprising a first resistor and a second resistor, one end of the first resistor is connected to the output end of the rectifier bridge, the other end of the first resistor is connected to one end of the second resistor and the PI pin of the slave communication chip, and the other end of the second resistor is grounded;

[0013] A transistor, wherein the base of the transistor is connected to the PO pin of the slave communication chip, the collector of the transistor is connected to the output end of the rectifier bridge, and the emitter of the transistor is grounded;

[0014] The slave station communication chip is connected to the control module.

[0015] In some embodiments, the slave station communication module further includes:

[0016] A transient voltage suppressor diode is arranged at the input end of the rectifier bridge.

[0017] In some embodiments, the slave station communication module further includes:

[0018] A diode, wherein the anode of the diode is connected to the output end of the rectifier bridge;

[0019] A first power supply unit, the first power supply unit comprises a voltage stabilizing chip, an input end of the voltage stabilizing chip is connected to the cathode of the diode, and an output end of the voltage stabilizing chip is connected to the power supply end of the control module;

[0020] The second power supply unit comprises a step-down chip, the input end of the step-down chip is connected to the cathode of the diode, and the output end of the step-down chip is connected to the power supply end of the motor drive module.

[0021] In some embodiments, the slave communication chip is a slave communication chip PB331.

[0022] In some embodiments, the motor drive module includes a DC bidirectional motor drive circuit SS6285M.

[0023] In some embodiments, the control module includes a microcontroller A31G112KUN.

[0024] Another technical solution is provided, a motor valve control system, comprising:

[0025] A controller, the controller comprising a modulation unit;

[0026] a communication bus connected to a modulation unit of the controller;

[0027] A bus-type motor valve, wherein there are multiple bus-type motor valves, and the multiple bus-type motor valves are connected in parallel to the communication bus, and the bus-type motor valve is the bus-type motor valve described above.

[0028] Different from the prior art, the above technical solution adds a slave communication module as a demodulation unit in the bus-type motor valve. The bus-type motor valve is connected to the communication bus through the slave communication module and then connected to the controller through the communication bus. Only two communication buses are needed between the bus-type motor valve and the controller, and all the bus-type motor valves are connected in parallel under the communication bus, so that the number of bus-type motor valves connected is no longer limited by the control interface of the controller. At the same time, the bus-type motor valve is connected to the controller through the communication bus, which can realize remote control of the bus-type motor valve.

[0029] The above-mentioned records related to the content of the utility model are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation method and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0031] In the drawings of the specification:

[0032] Figure 1 A structural schematic diagram of a control system of a traditional motor valve described in the background technology;

[0033] Figure 2 A schematic diagram of the structure of a bus-type motor valve described in a specific implementation method;

[0034] Figure 3 A circuit schematic diagram of the slave station communication module described in the specific implementation method;

[0035] Figure 4 A circuit schematic diagram of the first power supply unit in a specific implementation manner;

[0036] Figure 5 A circuit schematic diagram of the second power supply unit in a specific implementation manner;

[0037] Figure 6 A circuit schematic diagram of a slave station communication chip described in a specific implementation manner;

[0038] Figure 7A circuit schematic diagram of the motor drive module described in the specific implementation method;

[0039] Figure 8 A circuit diagram of the control module described in the specific implementation method;

[0040] Fig. 9 A schematic diagram of the structure of the motor valve control system described in the specific implementation method;

[0041] Fig.10 Another structural schematic diagram of the motor valve control system described in the specific implementation manner.

[0042] The reference numerals in the above drawings are described as follows:

[0043] 100. Bus type motor valve,

[0044] 110. Control module,

[0045] 120. Slave communication module.

[0046] 130. Motor drive module;

[0047] 140. Motor;

[0048] 200. Controller. DETAILED DESCRIPTION

[0049] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0050] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0051] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0052] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0053] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0054] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0055] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0056] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0057] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0058] See also Figure 2 , this embodiment is a bus-type motor valve, comprising:

[0059] Control module 110;

[0060] A slave communication module 120, the slave communication module 120 is connected to the control module 110, and the slave communication module is used to receive a signal sent by a communication bus;

[0061] A motor driving module 130 , wherein the motor driving module 130 is connected to the control module 110 ;

[0062] The motor 140 has a driving end connected to the motor driving module 130 .

[0063] The bus-type motor valve is connected to the communication bus through the slave station communication module 120 to receive the control signal sent by the controller, and then the slave station communication module 120 demodulates the control signal and sends it to the control module 110 of the bus-type motor valve. The control module 110 sends a drive signal to the motor drive module 130 according to the demodulated control signal to drive the motor 140 to perform corresponding actions, thereby controlling the switch of the bus-type motor valve.

[0064] By adding a slave communication module 120 as a demodulation unit in the bus-type motor valve, the bus-type motor valve is connected to the communication bus through the slave communication module 120, and then connected to the controller through the communication bus. Only two communication buses are required between the bus-type motor valve and the controller, and all bus-type motor valves are connected in parallel under the communication bus, so that the number of bus-type motor valves connected is no longer limited by the control interface of the controller. At the same time, the bus-type motor valve is connected to the controller through the communication bus, which can realize remote control of the bus-type motor valve.

[0065] See also Figure 3 In some embodiments, the slave communication module 120 includes:

[0066] A rectifier bridge D302, wherein an input end of the rectifier bridge D302 is connected to a communication bus;

[0067] A voltage divider circuit, the voltage divider circuit includes a first resistor R303 and a second resistor R308, one end of the first resistor R303 is connected to the output end of the rectifier bridge D302, the other end of the first resistor R303 is connected to one end of the second resistor R308 and the PI pin of the slave communication chip, and the other end of the second resistor R308 is grounded;

[0068] Transistor Q302, the base of the transistor Q302 is connected to the PO pin of the slave communication chip, the collector of the transistor Q302 is connected to the output end of the rectifier bridge D302, and the emitter of the transistor Q302 is grounded;

[0069] The slave communication chip is connected to the control module 110 .

[0070] The communication bus is connected through the input end of the rectifier bridge, and the output end of the rectifier bridge is connected to the PI pin of the slave communication chip after being divided by a voltage divider circuit composed of a first resistor and a second resistor. The output end of the rectifier bridge is connected to the collector of the transistor, and the base of the transistor is connected to the PO pin of the slave communication chip. After the electrical signal on the communication bus is rectified into direct current by the rectifier bridge, the slave communication chip extracts the control signal from the direct current signal, and then sends it to the control module 110 after demodulation, thereby realizing the extraction of the control signal on the communication bus.

[0071] See also Figure 3 In some embodiments, the slave communication module 120 further includes:

[0072] A transient suppression diode ZD301 is provided at the input end of the rectifier bridge D302.

[0073] By setting a transient suppression diode ZD301 at the input end of the rectifier bridge D302, line surge protection and input voltage limitation are achieved.

[0074] See also Figure 3-5 In some embodiments, the slave communication module 120 further includes:

[0075] A diode D301, wherein the anode of the diode D301 is connected to the output end of the rectifier bridge D302;

[0076] A first power supply unit, the first power supply unit includes a voltage stabilizing chip U302, the input end of the voltage stabilizing chip U302 is connected to the cathode of the diode D301, and the output end of the voltage stabilizing chip U302 is connected to the power supply end of the control module 110;

[0077] The second power supply unit includes a buck chip U304 , an input end of the buck chip U304 is connected to the cathode of the diode D301 , and an output end of the buck chip U304 is connected to the power supply end of the motor driving module 130 .

[0078] The slave communication module 120 can also provide power for the control module 110 and the motor drive module 130 by connecting a diode at the output end of the rectifier bridge to provide power output, and then converting the power output of the diode into a 3.3V power supply through the voltage regulator chip in the first power supply unit to provide working power for the control module 110. After the power output of the diode is stepped down by the step-down chip in the second power supply unit to obtain the power required by the motor drive module 130, the motor drive module 130 is provided with working power.

[0079] See also Figure 6 In some embodiments, the slave communication chip is a slave communication chip PB331. PB331 is a slave communication chip of POWERBUS technology. POWERBUS belongs to low-voltage power supply bus technology. By modulating the control signal on the power supply cable, it replaces the traditional separated control cable and power supply cable and greatly improves the communication stability. POWERBUS adopts the method of voltage transmission and current signal return, providing high communication anti-interference ability. PB331 can adapt to various wires used on site and realize the function of long-distance communication. The cable can be laid in any way such as bus type, tree type or star type, which greatly facilitates construction wiring, prevents wrong connection and simplifies construction and maintenance. PB331 can meet the power supply and communication needs of equipment through the POWERBUS bus.

[0080] See also Figure 7 In some embodiments, the motor drive module 130 includes a DC bidirectional motor 140 drive circuit SS6285M. SS6285M is a DC bidirectional motor 140 drive circuit, which is suitable for driving motors 140 of toys, automatic valve motors 140, electromagnetic door locks, etc. It has two logic input terminals for controlling the motor 140 to move forward, backward and brake. The circuit has good anti-interference, small standby current, low output internal resistance, and an internal diode that can release the reverse impact current of the inductive load.

[0081] See also Figure 8In some embodiments, the control module 110 includes a microcontroller A31G112KUN. The A31G112 series is a microcontroller based on ARM Cortex-M0+Core with up to 32KB of flash memory. The operating voltage of the device is 1.8V to 5.5V. The A31G112 series has POR, LVR, LVI and an internal RC oscillator. The A31G112 series supports sleep and deep sleep modes to reduce power consumption.

[0082] See also Fig. 9 and Fig.10 In another embodiment, a motor 140 valve control system includes:

[0083] A controller 200, wherein the controller 200 comprises a modulation unit;

[0084] A communication bus connected to a modulation unit of the controller;

[0085] The bus-type motor valve 100 is a plurality of bus-type motor valves 100, and the plurality of bus-type motor valves 100 are connected in parallel to the communication bus. The bus-type motor valve 100 is the bus motor valve 140 100 in the above embodiment. Figure 2 , the bus type motor valve 100 comprises:

[0086] Control module 110;

[0087] A slave communication module 120, the slave communication module 120 is connected to the control module 110, and the slave communication module is used to receive a signal sent by a communication bus;

[0088] A motor driving module 130 , wherein the motor driving module 130 is connected to the control module 110 ;

[0089] The motor 140 has a driving end connected to the motor driving module 130 .

[0090] The bus-type motor valve is connected to the communication bus through the slave station communication module 120 to receive the control signal sent by the controller, and then the slave station communication module 120 demodulates the control signal and sends it to the control module 110 of the bus-type motor valve. The control module 110 sends a drive signal to the motor drive module 130 according to the demodulated control signal to drive the motor 140 to perform corresponding actions, thereby controlling the switch of the bus-type motor valve.

[0091] By adding a slave communication module 120 as a demodulation unit in the bus-type motor valve, the bus-type motor valve is connected to the communication bus through the slave communication module 120, and then connected to the controller through the communication bus. Only two communication buses are required between the bus-type motor valve and the controller, and all bus-type motor valves are connected in parallel under the communication bus, so that the number of bus-type motor valves connected is no longer limited by the control interface of the controller. At the same time, the bus-type motor valve is connected to the controller through the communication bus, which can realize remote control of the bus-type motor valve.

[0092] Specifically, a modulation unit is added inside the controller to modulate the digital communication signal and the DC power supply signal together and transmit them on the communication bus. At the valve end of the motor 140, a slave communication module 120 is added inside as a demodulation unit to demodulate the signal on the communication bus and demodulate the digital communication signal component and the DC power supply component. The DC power supply component is supplied to the entire internal circuit of the motor 140 valve through the DC-DC module inside the motor 140 valve. The digital communication signal contains information such as the communication address and control instructions, so as to realize the corresponding control of the motor 140 valve at the target address, such as opening the valve, closing the valve, etc.

[0093] Among them, the modulation unit in the controller can use the bus master controller PB620, which is the master control IC of POWERBUS technology. POWERBUS belongs to low-voltage power supply bus technology. By modulating the control signal on the power supply cable, it replaces the traditional separated control cable and power supply cable and greatly improves the communication stability. The powerbus chip is a typical two-bus power supply bus, that is, two lines can realize simultaneous power supply communication, and has the characteristics of non-polarity wiring and arbitrary topology, which avoids the errors of reverse connection and wrong connection during on-site construction and simplifies the construction; the powerbus two-bus has strong anti-interference ability, can be mixed with the mains, and has no requirements for cables. Any cable can be used, and no electrical isolation is required, which greatly reduces the construction cost.

[0094] Because digital communication uses bus communication, multiple motor 140 valves can be connected to one controller. Only two buses are needed between the bus-type motor valve and the controller, and each bus-type motor valve is connected in parallel to the two buses. Each bus-type motor valve under the same controller has a unique address. The controller controls the corresponding motor 140 valve by addressing, so the control of the specified motor 140 valve can be completed by addressing. The DC power supply voltage is 24V-48V. The higher the voltage, the longer the transmission distance that can be supported, so it can support kilometer-level long-distance control. The system not only supports signal reading and writing operations, but also supplies power to the bus-type motor valves hanging below. The bus length can support up to 3km.

[0095] When a controller is connected to multiple motors and 140 valves, only two buses need to be arranged, saving wiring materials and labor costs. At the same time, the signal and power are on the same pair of buses, saving the cost of additional power lines.

[0096] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A bus-type motor valve, characterized in that: include: Control module; A slave communication module, the slave communication module is connected to the control module, and the slave communication module is used to receive a signal sent by a communication bus; A motor drive module, wherein the motor drive module is connected to the control module; A motor, wherein a driving end of the motor is connected to the motor driving module.

2. The bus-type motor valve according to claim 1, characterized in that: The slave station communication module comprises: A rectifier bridge, wherein an input end of the rectifier bridge is connected to a communication bus; A voltage divider circuit, the voltage divider circuit comprising a first resistor and a second resistor, one end of the first resistor is connected to the output end of the rectifier bridge, the other end of the first resistor is connected to one end of the second resistor and the PI pin of the slave communication chip, and the other end of the second resistor is grounded; A transistor, wherein the base of the transistor is connected to the PO pin of the slave communication chip, the collector of the transistor is connected to the output end of the rectifier bridge, and the emitter of the transistor is grounded; The slave station communication chip is connected to the control module.

3. The bus-type motor valve according to claim 2, characterized in that: The slave station communication module also includes: A transient voltage suppressor diode is arranged at the input end of the rectifier bridge.

4. The bus-type motor valve according to claim 2, characterized in that: The slave station communication module also includes: A diode, wherein the anode of the diode is connected to the output end of the rectifier bridge; A first power supply unit, the first power supply unit comprises a voltage stabilizing chip, an input end of the voltage stabilizing chip is connected to the cathode of the diode, and an output end of the voltage stabilizing chip is connected to the power supply end of the control module; The second power supply unit comprises a step-down chip, the input end of the step-down chip is connected to the cathode of the diode, and the output end of the step-down chip is connected to the power supply end of the motor drive module.

5. The bus-type motor valve according to claim 2, characterized in that: The slave communication chip is the slave communication chip PB331.

6. The bus-type motor valve according to claim 1, characterized in that: The motor drive module includes a DC bidirectional motor drive circuit SS6285M.

7. The bus-type motor valve according to claim 1, characterized in that: The control module includes a microcontroller A31G112KUN.

8. A motor valve control system, characterized in that: include: A controller, the controller comprising a modulation unit; a communication bus connected to a modulation unit of the controller; A bus-type motor valve, wherein there are multiple bus-type motor valves, and the multiple bus-type motor valves are connected in parallel to the communication bus. The bus-type motor valve is the bus-type motor valve according to any one of claims 1-7.

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