CN111503349B - Control circuit of electromagnetic valve and electromagnetic valve - Google Patents
Control circuit of electromagnetic valve and electromagnetic valve Download PDFInfo
- Publication number
- CN111503349B CN111503349B CN202010271225.6A CN202010271225A CN111503349B CN 111503349 B CN111503349 B CN 111503349B CN 202010271225 A CN202010271225 A CN 202010271225A CN 111503349 B CN111503349 B CN 111503349B
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- solenoid valve
- circuit board
- layer
- chip microcomputer
- control circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
- H05K1/0204—Cooling of mounted components using means for thermal conduction connection in the thickness direction of the substrate
- H05K1/0206—Cooling of mounted components using means for thermal conduction connection in the thickness direction of the substrate by printed thermal vias
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
- H05K1/0209—External configuration of printed circuit board adapted for heat dissipation, e.g. lay-out of conductors, coatings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0296—Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295
- H05K1/0298—Multilayer circuits
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The embodiment of the invention provides a control circuit of a solenoid valve and the solenoid valve, wherein the solenoid valve is driven by the combination of a half-bridge driving device and a singlechip controller, and the solenoid valve with high driving capability and high frequency duty ratio can be controlled because the half-bridge driving device with the maximum current larger than or equal to the preset current and the duty ratio frequency larger than or equal to the preset frequency is selected. On the other hand, heat dissipation is realized through the heat conduction copper-clad and the heat dissipation holes of the multilayer circuit board, and the normal operation of the control circuit is ensured.
Description
Technical Field
The invention relates to the technical field of electromagnetic valve control, in particular to a control circuit of an electromagnetic valve and the electromagnetic valve.
Background
The solenoid valve is a relatively wide control device, and the existing solenoid valve (for example, saao solenoid valve) control can only be controlled by a controller of an original factory, and generally needs to be combined with an upper computer to realize the control of the solenoid valve programming. The upper computer is used for realizing programming, programming a required execution program through the upper computer, and downloading the program into a controller singlechip of the electromagnetic valve programming control circuit through a serial port RS485 after the program is programmed. However, the existing solenoid valve controller belongs to a high-power driving controller or a low-power output controller similar to a PLC, and cannot drive a solenoid valve requiring high driving capability and high frequency duty ratio.
Therefore, the existing solenoid valve controller cannot control the solenoid valve with high driving capability and high frequency duty ratio.
Disclosure of Invention
The embodiment of the invention provides a control circuit of a solenoid valve and the solenoid valve, which are used for solving the problem that the existing solenoid valve controller cannot control the solenoid valve with high driving capacity and high frequency duty ratio.
In view of the above technical problems, in a first aspect, an embodiment of the present invention provides a control circuit for a solenoid valve, which is characterized by including a single-chip microcomputer controller, a multilayer circuit board, and at least one half-bridge driving device for controlling the solenoid valve;
the single chip microcomputer controller and the half-bridge driving device are arranged on the top layer of the multilayer circuit board;
the single chip microcomputer controller is connected with the half-bridge driving device through a signal layer of the multilayer circuit board, and the multilayer circuit board is provided with a heat conduction copper clad and a heat dissipation hole;
the maximum current which can be provided by the half-bridge driving device is larger than or equal to a preset current, and the frequency of the duty ratio is larger than or equal to a preset frequency.
Optionally, the preset current is 200mA, and the preset frequency is 4 kHz.
Optionally, a communication module is further included;
the communication module is arranged on the top layer of the multilayer circuit board and is connected with the single chip microcomputer controller through the signal layer of the multilayer circuit board.
Optionally, the multilayer circuit board is a six-layer circuit board;
the six-layer circuit board comprises a top layer, a bottom layer, a signal layer, a driving layer and a ground plane; wherein the signal layer comprises a first signal layer and a second signal layer.
Optionally, the method further comprises:
the communication module is used for sending information to external communication equipment or receiving information sent by external communication equipment so as to control the electromagnetic valve through the external communication equipment;
wherein, the external communication equipment is a computer or a terminal.
Optionally, the method further comprises:
and sending a program package for upgrading the single chip microcomputer controller to the single chip microcomputer controller through external communication equipment, so that the single chip microcomputer controller is upgraded according to the program package.
Optionally, the half-bridge driver devices are uniformly distributed at two ends of the top end of the multilayer circuit board, and 4 half-bridge driver devices are distributed at each end of the top end of the multilayer circuit board.
In a second aspect, an embodiment of the invention provides a solenoid valve comprising a control circuit for the solenoid valve as described in any one of the above.
The embodiment of the invention provides a control circuit of a solenoid valve and the solenoid valve, wherein the solenoid valve is driven by the combination of a half-bridge driving device and a singlechip controller, and the solenoid valve with high driving capability and high frequency duty ratio can be controlled because the half-bridge driving device with the maximum current larger than or equal to the preset current and the duty ratio frequency larger than or equal to the preset frequency is selected. On the other hand, heat dissipation is realized through the heat conduction copper-clad and the heat dissipation holes of the multilayer circuit board, and the normal operation of the control circuit is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a chip controller and a half-bridge driving device in a control circuit of a solenoid valve according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a multilayer circuit board in a control circuit for setting a solenoid valve according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a chip-computer controller and a half-bridge driving device in a control circuit of a solenoid valve provided in this embodiment, and fig. 2 is a schematic structural diagram of a multilayer circuit board in a control circuit of a solenoid valve provided in this embodiment, referring to fig. 1 and fig. 2, the control circuit of a solenoid valve includes a chip-computer controller, a multilayer circuit board and at least one half-bridge driving device for controlling the solenoid valve;
the single chip microcomputer controller and the half-bridge driving device are arranged on the top layer of the multilayer circuit board;
the single chip microcomputer controller and the half-bridge driving device are connected through a signal layer of the multilayer circuit board, and the multilayer circuit board is provided with heat conduction copper clad and heat dissipation holes (a cross section of the heat dissipation holes is shown in fig. 2);
the maximum current which can be provided by the half-bridge driving device is larger than or equal to a preset current, and the frequency of the duty ratio is larger than or equal to a preset frequency.
Wherein, the singlechip controller is MCU. Wherein, the control quantity of the singlechip controller reaches 20000 equal parts.
The half-bridge driving device comprises a half-bridge driving device, a single-chip microcomputer controller, a serial port RS485, a power supply and a power supply, wherein a required execution program is programmed through an upper computer, and after the program is compiled, the program is sent to or guided into the single-chip microcomputer controller through a serial port RS485 so as to control the half-bridge driving device through the single-chip microcomputer controller.
The control circuit of the solenoid valve provided in this embodiment is used to control a solenoid valve in which "the maximum current that can be supplied is greater than or equal to the preset current, and the frequency of the duty ratio is greater than or equal to the preset frequency", for example, the solenoid valve is a saao solenoid valve.
The single chip microcomputer controller controls each half-bridge driving device through an internal program, and the working state of the electromagnetic valve is controlled through the half-bridge driving devices.
Wherein, the multilayer circuit board is a six-layer circuit board.
Wherein, the top of the half-bridge driving device is contacted with the shell of die-casting aluminum.
It should be noted that the bottom of the half-bridge driving device is connected together through six layers of circuit boards, the circuit boards are connected together through heat conduction copper cladding and heat dissipation holes, and the top of the half-bridge driving device is in contact with a shell of die-cast aluminum, so that a good heat dissipation effect can be achieved, and the electromagnetic compatibility is considered, so that the interference between the devices is avoided.
This embodiment provides a control circuit of solenoid valve, realizes the drive to the solenoid valve through the combination of half-bridge drive device and single chip microcomputer controller, owing to select for use that the maximum current is more than or equal to predetermines the electric current, and the frequency of duty cycle is more than or equal to the half-bridge drive device of predetermineeing the frequency, consequently, can realize controlling the solenoid valve of high drive ability and high frequency duty cycle. On the other hand, heat dissipation is realized through the heat conduction copper-clad and the heat dissipation holes of the multilayer circuit board, and the normal operation of the control circuit is ensured.
Further, on the basis of the above embodiment, the preset current is 200mA, and the preset frequency is 4 kHz.
The model of the half-bridge driving device is BTN8962 TA.
In addition, the selection of a half-bridge driving device with the model number BTN8962TA is a control implementation mode for integrating high-side driving and low-side driving. The whole control can be realized, the running speed is higher, the stability is higher, the size is smaller, and the price is cheaper.
The maximum current that the half-bridge drive device in this embodiment can provide is greater than or equal to 200mA, and the frequency of duty cycle is greater than or equal to 4kHz, can realize controlling the solenoid valve of high drive ability and high frequency duty cycle.
As shown in fig. 1, further, on the basis of the above embodiments, the mobile terminal further includes a communication module;
the communication module is arranged on the top layer of the multilayer circuit board and is connected with the single chip microcomputer controller through the signal layer of the multilayer circuit board.
The communication module can remotely control the opening or closing of the electromagnetic valve, and can also upgrade programs in the single chip microcomputer controller, for example, an upgrade package needing to be upgraded is sent to the single chip microcomputer controller through the communication module, so that the upgrading process is realized.
Taking the saao solenoid valve as an example, the existing saao solenoid valve controller can only use a pre-programmed program to control operation, cannot flexibly realize remote operation, needs personnel to go to the field of equipment to perform programming processing, can be used for the saao solenoid valve programming controller, can meet remote control, can use portable mobile equipment such as a mobile phone, a tablet personal computer and the like to control and check the equipment anytime and anywhere, can also re-program a new control program to be downloaded to the control equipment, does not need to go to the field of the equipment personally, and can save labor and financial cost.
The embodiment realizes remote control of the electromagnetic valve through the communication module, and realizes remote upgrade of the single chip microcomputer controller through the communication module.
As shown in fig. 2, further, on the basis of the above embodiments, the multilayer circuit board is a six-layer circuit board;
the six-layer circuit board comprises a top layer 101, a bottom layer 106, signal layers (102 and 103), a driving layer 105 and a ground plane 104; wherein the signal layers include a first signal layer 102 and a second signal layer 103.
Core and prereg are the Core and prepreg materials, respectively, of a six-layer circuit board.
It should be noted that, in the six-layer circuit board, the Signal layer (Signal) is divided into the first Signal layer 102 and the second Signal layer 103, and the two Signal layers make the control Signal more stable and prevent the interference of large current and high voltage on the driving layer.
A separate ground plane (GND)104 may protect the stability of the control signals and also prevent interference from other large currents and high voltages. A separate Power Multiple Nets (driving layer 105) and can prevent interference with other signal controls.
In addition, the top layer and the bottom layer are double-sided welding layers, and the double-sided welding layers are easy to be used for components.
This embodiment links together through six layers of circuit boards bottom through half-bridge drive device to cover copper, louvre through heat conduction and link together the circuit board, and half-bridge drive device top through the shell contact with die-casting aluminium, can play fine radiating effect like this, compromise electromagnetic compatibility moreover and avoided the interference between the device. In addition, due to the connection of the six-layer circuit board, the condition of circuit breaking is avoided.
Further, on the basis of the above embodiments, the method further includes:
the communication module is used for sending information to external communication equipment or receiving information sent by external communication equipment so as to control the electromagnetic valve through the external communication equipment;
wherein, the external communication equipment is a computer or a terminal.
Further, on the basis of the above embodiments, the method further includes:
and sending a program package for upgrading the single chip microcomputer controller to the single chip microcomputer controller through external communication equipment, so that the single chip microcomputer controller is upgraded according to the program package.
The implementation realizes the control of the electromagnetic valve through the external communication equipment through the communication module, and realizes the remote upgrade of the singlechip controller through the communication module.
It should be noted that, in the solution provided in the present application, several half-bridge driving devices may be used.
Further, as shown in fig. 1, on the basis of the above embodiments, the half-bridge driving devices are uniformly distributed at both ends of the top end of the multilayer circuit board, and 4 half-bridge driving devices are distributed at each end of the top end of the multilayer circuit board.
8 intelligent switching power devices (half-bridge driving devices) are distributed at two ends of the circuit board.
Further, on the basis of the above embodiments, the control circuit of the electromagnetic valve further includes a serial port RS485 and a CAN bus, which are respectively connected to the single chip controller, and are configured to receive RS485 signals and CAN signals.
Further, on the basis of the above embodiments, the control circuit of the solenoid valve further includes a power module, and the 24V DC-DC step-down power module is connected to the single chip microcomputer controller and is used for providing 5V and 3.3V power for the control circuit of the solenoid valve.
In summary, the half-bridge driving devices are uniformly distributed on the edges of the six layers of circuit boards, the bottoms of all the half-bridge driving devices are connected together through the six layers of circuit boards, the circuit boards are connected together through the heat conduction copper clad and the heat dissipation holes, and the top of each half-bridge driving device is in contact with the die-cast aluminum shell, so that a good heat dissipation effect can be achieved, electromagnetic compatibility is considered, and interference among the devices is avoided.
Specifically, taking the control of the sao solenoid valve as an example:
the invention provides a programmable control circuit for a Saao solenoid valve. The circuit comprises a half-bridge driving device and a single chip microcomputer controller, wherein the half-bridge driving device is connected with the single chip microcomputer controller, and is controlled according to a signal of the single chip microcomputer controller so as to control the working state of the Saao electromagnetic valve. The control circuit can realize the equipment control of the Saao solenoid valve.
Preferably, the half-bridge driving devices are arranged on six layers of circuit boards, each half-bridge driving device is connected with the six layers of circuit boards, and the circuit boards are provided with heat conduction copper clad and heat dissipation holes.
Preferably, the half-bridge driving devices are uniformly distributed at two ends of the circuit board.
Preferably, each half-bridge driving device is BTN8962TA, the driving capacity is not lower than 200mA, and 4K high-frequency duty ratio is achieved.
Preferably, the number of the half-bridge driving devices is 8.
Preferably, the circuit further comprises an RS485 bus and a CAN bus, which are respectively connected with the single chip microcomputer controller and used for receiving the RS485 signal and the CAN signal.
Preferably, the circuit further comprises a 24V DC-DC step-down power supply module, and the 24V DC-DC step-down power supply module is connected with the single chip microcomputer controller and used for providing 5V and 3.3V power supplies for the controller.
Preferably, the controller is a single chip microcomputer MCU, and the control quantity reaches 20000 equal parts.
In another aspect, this embodiment provides a solenoid valve including a control circuit of the solenoid valve described in any of the above embodiments.
This embodiment provides a solenoid valve, realizes the drive to the solenoid valve through the combination of half-bridge drive device and single chip microcomputer controller, owing to choose for use that the maximum current is more than or equal to predetermines the electric current, and the frequency of duty cycle is more than or equal to the half-bridge drive device of predetermineeing the frequency, consequently, can realize controlling the solenoid valve of high driving ability and high frequency duty cycle. On the other hand, heat dissipation is realized through the heat conduction copper-clad and the heat dissipation holes of the multilayer circuit board, and the normal operation of the control circuit is ensured.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The control circuit of the solenoid valve is characterized by comprising a single-chip microcomputer controller, a multilayer circuit board and at least one half-bridge driving device for controlling the solenoid valve;
the single chip microcomputer controller and the half-bridge driving device are arranged on the top layer of the multilayer circuit board;
the single chip microcomputer controller is connected with the half-bridge driving device through a signal layer of the multilayer circuit board, and the multilayer circuit board is provided with a heat conduction copper clad and a heat dissipation hole;
the maximum current which can be provided by the half-bridge driving device is greater than or equal to a preset current, and the frequency of the duty ratio is greater than or equal to a preset frequency;
the multilayer circuit board is a six-layer circuit board;
the six-layer circuit board comprises a top layer, a bottom layer, a signal layer, a driving layer and a ground plane; wherein the signal layer comprises a first signal layer and a second signal layer.
2. The control circuit of claim 1, wherein the preset current is 200mA and the preset frequency is 4 kHz.
3. The control circuit for a solenoid valve according to claim 1, further comprising a communication module;
the communication module is arranged on the top layer of the multilayer circuit board and is connected with the single chip microcomputer controller through the signal layer of the multilayer circuit board.
4. The control circuit for a solenoid valve according to claim 3, further comprising:
the communication module is used for sending information to external communication equipment or receiving information sent by external communication equipment so as to control the electromagnetic valve through the external communication equipment;
wherein, the external communication equipment is a computer or a terminal.
5. The control circuit for a solenoid valve according to claim 3, further comprising:
and sending a program package for upgrading the single chip microcomputer controller to the single chip microcomputer controller through external communication equipment, so that the single chip microcomputer controller is upgraded according to the program package.
6. The control circuit of claim 1, wherein the half-bridge driver devices are evenly distributed at both ends of the top end of the multilayer circuit board, and 4 half-bridge driver devices are distributed at each end of the top end of the multilayer circuit board.
7. A solenoid valve comprising a control circuit for the solenoid valve of any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010271225.6A CN111503349B (en) | 2020-04-08 | 2020-04-08 | Control circuit of electromagnetic valve and electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010271225.6A CN111503349B (en) | 2020-04-08 | 2020-04-08 | Control circuit of electromagnetic valve and electromagnetic valve |
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| Publication Number | Publication Date |
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| CN111503349A CN111503349A (en) | 2020-08-07 |
| CN111503349B true CN111503349B (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010271225.6A Active CN111503349B (en) | 2020-04-08 | 2020-04-08 | Control circuit of electromagnetic valve and electromagnetic valve |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113639081B (en) * | 2021-06-28 | 2024-02-13 | 江苏汇智高端工程机械创新中心有限公司 | Proportional solenoid valve driving device and control method |
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| EP0838791A2 (en) * | 1996-10-25 | 1998-04-29 | Hubbell Incorporated | Multifunction sensor and network sensor system |
| CN201403252Y (en) * | 2009-03-03 | 2010-02-10 | 常州麦科卡电动车辆科技有限公司 | Circuit board for controller of brushless DC motor |
| CN206268568U (en) * | 2016-12-13 | 2017-06-20 | 贵州红林机械有限公司 | High-speed switch electromagnetic valve drive circuit |
| CN110131466A (en) * | 2019-05-28 | 2019-08-16 | 合肥师范学院 | A kind of high-pressure solenoid valve coil drive system |
| CN110206637A (en) * | 2019-05-07 | 2019-09-06 | 一汽解放汽车有限公司 | A kind of engine pneumatic actuator driving circuit for electromagnetic valve and control method |
-
2020
- 2020-04-08 CN CN202010271225.6A patent/CN111503349B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0838791A2 (en) * | 1996-10-25 | 1998-04-29 | Hubbell Incorporated | Multifunction sensor and network sensor system |
| CN201403252Y (en) * | 2009-03-03 | 2010-02-10 | 常州麦科卡电动车辆科技有限公司 | Circuit board for controller of brushless DC motor |
| CN206268568U (en) * | 2016-12-13 | 2017-06-20 | 贵州红林机械有限公司 | High-speed switch electromagnetic valve drive circuit |
| CN110206637A (en) * | 2019-05-07 | 2019-09-06 | 一汽解放汽车有限公司 | A kind of engine pneumatic actuator driving circuit for electromagnetic valve and control method |
| CN110131466A (en) * | 2019-05-28 | 2019-08-16 | 合肥师范学院 | A kind of high-pressure solenoid valve coil drive system |
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| CN111503349A (en) | 2020-08-07 |
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