Multi-way valve with magnetic angle sensor

Abstract

The utility model provides a multi-way valve with a magnetic angle sensor, which comprises a multi-way valve body and a motor connected with a rotor of the multi-way valve body, a PCB (printed circuit board) control board is arranged on the upper side of the motor, a code disc mechanism is arranged at one end, close to the multi-way valve body, of an output shaft of the motor, and a magnetic angle detection chip is arranged at the other end of the output shaft of the motor. One side of the magnetic angle detection chip is provided with a radial magnet, the radial magnet is installed on an output shaft of the motor, and the PCB control board is connected with and controls the motor, the coded disc mechanism and the magnetic angle detection chip. The multi-way valve has the advantages that the coded disc mechanism is matched with the magnetic angle detection chip and the radial magnet, and the technical problem that according to an existing multi-way valve, the rotation angle of a motor is not accurately positioned is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-way valve control, in particular to a multi-way valve with a magnetic angle sensor. Background Art

[0002] A multi-way valve is a regulating valve that changes the valve from an open position to a closed position by rotating a component. The flow of goods is connected or cut off by a rotating component. The rotating component is driven by a motor, and a mechanical code disk and an optical coupling plate are provided to ensure the accuracy of the click rotation angle.

[0003] However, the angle positioning using mechanical encoder and optical coupling plate is prone to inaccuracy, such as Figure 1 In the case where its position is between two specific angles, the mechanical code disk will still be considered to be at the previous specific angle position, and at this position, the channel of the multi-way valve is semi-open, which will cause unstable flow output. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a multi-way valve with a magnetic angle sensor, which solves the technical problem of inaccurate motor rotation angle positioning in the prior multi-way valve.

[0005] According to an embodiment of the utility model, a multi-way valve with a magnetic angle sensor is described, comprising a multi-way valve body and a motor connected to the rotor of the multi-way valve body, a PCB control board is provided on the upper side of the motor, a code disk mechanism is provided at one end of the output shaft of the motor close to the multi-way valve body, a magnetic angle detection chip is provided at the other end of the output shaft of the motor, a radial magnet is provided on one side of the magnetic angle detection chip, the radial magnet is installed on the output shaft of the motor, and the PCB control board is connected to control the motor, the code disk mechanism and the magnetic angle detection chip.

[0006] The technical principle of the utility model is: a code disk mechanism is used to achieve basic angle positioning, and a magnetic angle detection chip is used to sense a radial magnet that rotates with the output shaft of the motor to perform compensation positioning to ensure the accuracy of the motor rotation angle, that is, to ensure that the multi-way valve channel can be fully connected.

[0007] Compared with the prior art, the utility model has the following beneficial effects: through the code disk mechanism in conjunction with the magnetic angle detection chip and the radial magnet, it solves the technical problem of inaccurate motor rotation angle positioning in the existing multi-way valve.

[0008] Furthermore, the code disk mechanism includes a mechanical code disk and an optical coupling board, the mechanical code disk is connected to the PCB control board, the optical coupling board is provided with through-position notches evenly distributed circumferentially, and the optical coupling board is also provided with a zero-position notch.

[0009] Each time the mechanical code disk recognizes a through-position gap, the PCB control board will count 1. When the mechanical code disk recognizes a zero-position gap, the PCB control board counts back to zero, so that it can accurately know which channel the multi-way valve is connected to.

[0010] Furthermore, the PCB control board includes a main control chip and a code disk detection circuit, a magnetic angle detection circuit, a communication module, an indicator light, an EEPROM and a motor connected and controlled by the main control chip, the communication module is communicatively connected to a host computer, the code disk detection circuit is connected to a mechanical code disk, and the magnetic angle detection chip is connected to the magnetic angle detection circuit.

[0011] Realize the intelligent control of the host computer of the multi-way valve.

[0012] Furthermore, the main control chip is connected to the communication module through USART, the communication module communicates with the host computer through RS485 or RS232, the main control chip is respectively connected to the indicator light, the code disk detection circuit, and the motor through the IO port, the main control chip communicates with the EEPROM through IIC, and the main control chip is connected to the magnetic angle detection circuit through SPI.

[0013] Furthermore, the code disk detection circuit includes a slot-type photoelectric sensor, a Schmitt trigger and a transistor, the slot-type photoelectric sensor is connected to the Schmitt trigger, the Schmitt trigger is connected to the transistor, and the transistor is connected to the main control chip.

[0014] Further, the slot-type photoelectric sensor has four interfaces, namely, one interface, two interfaces, three interfaces and four interfaces;

[0015] The Schmitt trigger includes a VCC interface, a Y interface, a GND interface and an A interface;

[0016] The two interfaces are connected to a 5V power supply, and a resistor is provided between the two;

[0017] The first interface is grounded;

[0018] The three interfaces are also connected to a 5V power supply;

[0019] The four interfaces are grounded and connected to interface A respectively, and resistors and capacitors connected in parallel are arranged at the grounding points of the four interfaces;

[0020] The VCC interface is connected to a 5V power supply, the Y interface is connected to the base of the transistor, a resistor is provided between the base and the Y interface, and the GND interface is grounded;

[0021] The emitter of the transistor is connected to a 5V power supply, the collector of the transistor is grounded, a resistor is arranged at the grounding point of the collector, and the collector is also directly connected to a main control chip.

[0022] Furthermore, the connection structure between the magnetic angle detection circuit and the magnetic angle detection chip is:

[0023] The magnetic angle detection chip includes a CSN interface, a CLK interface, a MISO interface, a TEST interface, a GND interface, a VDD3V interface and a VDD interface;

[0024] The CSN interface is connected to the chip select signal of the main control chip, the CLK interface is connected to the clock signal of the main control chip, the MISO interface is connected to the MISO communication line of the main control chip, the MISO interface is connected to the MOSI communication line of the main control chip, the TEST interface, GND interface, VDD3V interface and VDD interface are all grounded, capacitors are respectively provided at the grounding points of the VDD3V interface and the VDD interface, and a 5V power supply is connected between the VDD interface and the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a multi-way valve with a magnetic angle sensor according to an embodiment of the utility model.

[0026] Figure 2 Schematic diagram of the optical coupling plate structure of an embodiment of the utility model.

[0027] Figure 3 This is a structural block diagram of a PCB control board according to an embodiment of the utility model.

[0028] Figure 4 This is a code disk detection circuit diagram of an embodiment of the utility model.

[0029] Figure 5 This is a magnetic angle detection circuit diagram of an embodiment of the utility model.

[0030] In the above drawings: 10, multi-way valve body; 11, rotor; 12, motor; 13, PCB control board; 20, mechanical code disk; 30, optical coupling board; 31, through position gap; 32, zero position gap; 40, magnetic angle detection chip; 41, radial magnet;

[0031] U10, slot-type photoelectric sensor; U11, Schmitt trigger; Q1, transistor; U5, magnetic angle detection chip;

[0032] 1. One interface; 2. Two interfaces; 3. Three interfaces; 4. Four interfaces;

[0033] Resistors: R15, R16, R17, R18; Capacitors: C30, C32, C43. DETAILED DESCRIPTION

[0034] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0035] like Figure 1 The multi-way valve with a magnetic angle sensor shown includes a multi-way valve body 10 and a motor 12 connected to the rotor 11 of the multi-way valve body 10. A PCB control board 13 is provided on the upper side of the motor 12. An output shaft of the motor 12 is provided with a code disk mechanism at one end close to the multi-way valve body 10 for controlling the rotation angle of the motor 12. A magnetic angle detection chip 40 is provided at the other end of the output shaft of the motor 12. A radial magnet 41 is provided on one side of the magnetic angle detection chip 40. The radial magnet 41 is installed on the output shaft of the motor 12 and rotates with the rotating shaft of the motor 12. The PCB control board 13 connects and controls the motor 12, the code disk mechanism and the magnetic angle detection chip 40.

[0036] like Figure 1-2 As shown, the code disk mechanism includes a mechanical code disk 20 and an optical coupling board 30, wherein the mechanical code disk 20 is connected to the PCB control board 13, the optical coupling board 30 is uniformly provided with through-position notches 31 in the circumferential direction, and the optical coupling board 30 is also provided with a zero-position notch 32. The mechanical code disk 20 distinguishes the angular position of the motor 12 by sensing the through-position notches 31 or the zero-position notches 32.

[0037] like Figure 3 As shown, the PCB control board includes a main control chip and a code disk detection circuit, a magnetic angle detection circuit, a communication module, an indicator light, an EEPROM and a motor connected and controlled by the main control chip. The communication module is connected to a host computer for communication. The code disk detection circuit is connected to a mechanical code disk to control the operation of the mechanical code disk. The magnetic angle detection chip is connected to the magnetic angle detection circuit to control the operation of the magnetic angle detection chip. The specific main control chip is connected to the communication module through USART, and the communication module communicates with the host computer through RS485 or RS232. The main control chip is respectively connected to the indicator light, the code disk detection circuit and the motor through the IO port. The main control chip communicates with the EEPROM through IIC, and the main control chip is connected to the magnetic angle detection circuit through SPI.

[0038] like Figure 4 As shown, the code disk detection circuit includes a slot-type photoelectric sensor U10, a Schmitt trigger U11 and a transistor Q1, wherein the slot-type photoelectric sensor U10 is connected to the Schmitt trigger U11, the Schmitt trigger U11 is connected to the transistor Q1, and the transistor Q1 is connected to the main control chip.

[0039] The specific slot-type photoelectric sensor U10 has four interfaces, namely, interface 1, interface 2, interface 3, and interface 4;

[0040] The Schmitt trigger U11 includes a VCC interface, a Y interface, a GND interface and an A interface;

[0041] The second interface 2 is connected to a 5V power supply, and a resistor R16 is provided between the two, while the first interface 1 is grounded; thus providing a suitable conduction current for the input stage of the slot-type photoelectric sensor U10.

[0042] The third interface 3 is also connected to a 5V power supply, and the fourth interface 4 is grounded and connected to the A interface respectively. A resistor R15 and a capacitor C43 are provided in parallel at the grounding of the fourth interface 4. R15 provides a pull-down resistor, and C43 performs filtering to remove the high-frequency part.

[0043] When the slot photoelectric sensor U10 is blocked, the output stage of the slot photoelectric sensor U10 is disconnected, and the voltage of the four-port 4 of the slot photoelectric sensor U10 is pulled down. When it is low to a certain level, since the four-port 4 is also connected to the A port of the Schmitt trigger U11, the analog signal output by the slot photoelectric sensor U10 will be converted into a switch signal and output to the four-port 4 to the Schmitt trigger U11.

[0044] The emitter of transistor Q1 is connected to a 5V power supply, the VCC interface is connected to a 5V power supply, the GND interface is grounded, the Y interface is connected to the base of transistor Q1, and a resistor R17 is provided between the base and the Y interface, the collector of transistor Q1 is grounded, and a resistor R18 is provided at the collector grounding point, and the collector is also directly connected to the main control chip, and the signal can be output to the main control chip, and the main control chip analyzes the signal.

[0045] like Figure 5 As shown, the connection structure between the magnetic angle detection circuit and the magnetic angle detection chip U5 is:

[0046] The magnetic angle detection chip U5 includes a CSN interface, a CLK interface, a MISO interface, a TEST interface, a GND interface, a VDD3V interface and a VDD interface;

[0047] The CSN interface is connected to the chip select signal of the main control chip, the CLK interface is connected to the clock signal of the main control chip, the MISO interface is connected to the MISO communication line of the main control chip, and the MISO interface is connected to the MOSI communication line of the main control chip to realize communication with the main control chip. The TEST interface, GND interface, VDD3V interface and VDD interface are all grounded. Capacitors C32 and C30 are respectively provided at the grounding points of the VDD3V interface and the VDD interface for filtering. A 5V power supply is connected between the VDD interface and the capacitor for inputting power.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A multi-way valve with a magnetic angle sensor, characterized in that: It includes a multi-way valve body and a motor connected to the rotor of the multi-way valve body, a PCB control board is provided on the upper side of the motor, a code disk mechanism is provided at one end of the output shaft of the motor close to the multi-way valve body, a magnetic angle detection chip is provided at the other end of the output shaft of the motor, a radial magnet is provided on one side of the magnetic angle detection chip, and the radial magnet is installed on the output shaft of the motor, and the PCB control board is connected to control the motor, the code disk mechanism and the magnetic angle detection chip.

2. The multi-way valve with a magnetic angle sensor according to claim 1, characterized in that: The code disk mechanism comprises a mechanical code disk and an optical coupling board. The mechanical code disk is connected to a PCB control board. The optical coupling board is provided with through-position notches evenly distributed circumferentially, and a zero-position notch is also provided on the optical coupling board.

3. The multi-way valve with a magnetic angle sensor according to claim 2, characterized in that: The PCB control board includes a main control chip and a code disk detection circuit, a magnetic angle detection circuit, a communication module, an indicator light, an EEPROM and a motor connected and controlled by the main control chip. The communication module is communicatively connected to a host computer, the code disk detection circuit is connected to a mechanical code disk, and the magnetic angle detection chip is connected to the magnetic angle detection circuit.

4. The multi-way valve with a magnetic angle sensor according to claim 3, characterized in that: The main control chip is connected to the communication module through USART, the communication module communicates with the host computer through RS485 or RS232, the main control chip is respectively connected to the indicator light, the code disk detection circuit, and the motor through the IO port, the main control chip communicates with the EEPROM through IIC, and the main control chip is connected to the magnetic angle detection circuit through SPI.

5. The multi-way valve with a magnetic angle sensor according to claim 4, characterized in that: The code disk detection circuit includes a slot-type photoelectric sensor, a Schmitt trigger and a transistor. The slot-type photoelectric sensor is connected to the Schmitt trigger, the Schmitt trigger is connected to the transistor, and the transistor is connected to the main control chip.

6. The multi-way valve with a magnetic angle sensor according to claim 5, characterized in that: The slot-type photoelectric sensor has four interfaces, namely, one interface, two interfaces, three interfaces and four interfaces; The Schmitt trigger includes a VCC interface, a Y interface, a GND interface and an A interface; The two interfaces are connected to a 5V power supply, and a resistor is provided between the two; The first interface is grounded; The three interfaces are also connected to a 5V power supply; The four interfaces are grounded and connected to interface A respectively, and resistors and capacitors connected in parallel are arranged at the grounding points of the four interfaces; The VCC interface is connected to a 5V power supply, the Y interface is connected to the base of the transistor, a resistor is provided between the base and the Y interface, and the GND interface is grounded; The emitter of the transistor is connected to a 5V power supply, the collector of the transistor is grounded, a resistor is arranged at the grounding point of the collector, and the collector is also directly connected to a main control chip.

7. The multi-way valve with a magnetic angle sensor according to claim 4, characterized in that: The connection structure between the magnetic angle detection circuit and the magnetic angle detection chip is: The magnetic angle detection chip includes a CSN interface, a CLK interface, a MISO interface, a TEST interface, a GND interface, a VDD3V interface and a VDD interface; The CSN interface is connected to the chip select signal of the main control chip, the CLK interface is connected to the clock signal of the main control chip, the MISO interface is connected to the MISO communication line of the main control chip, the MISO interface is connected to the MOSI communication line of the main control chip, the TEST interface, GND interface, VDD3V interface and VDD interface are all grounded, capacitors are respectively provided at the grounding points of the VDD3V interface and the VDD interface, and a 5V power supply is connected between the VDD interface and the capacitor.

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