CN205877386U - Hydraulic pressure high -speed switching valve detect and control circuit - Google Patents

Abstract

The utility model discloses a measurement and the control circuit of hydraulic switch valve, this circuit include RAM board basic circuit part, displacement signal detection circuitry subtotal control signal output circuit part. The utility model discloses a high -speed switching valve of hydraulic pressure detects and controlling means's circuit is inspectd through actual, can measure the magnitude of voltage that the valve displacement corresponds effectively to turn into corresponding control flap signal, its error is at negligible's within range. The hydrovalve door -trip detects and controlling means, can be arranged in hydraulic pressure valve control system, and its circuit design is simple, and the sexual valence relative altitude can realize real -time communication, and practical value is obvious.

Description

The detection of Hydraulic high-speed on-off valve door and control circuit

Technical field

This utility model belongs to technical field of industrial control, relates to a kind of circuit, is specifically related to a kind of hydraulic High-speed switch Valve detection and the circuit of control device.

Background technology

There is problem bulky, that control accuracy is relatively low in the hydraulic valve controller used in the market.Along with society Improving constantly of the most progressive and economic level of meeting, it is new that the working method of conventional hydraulic valve cannot meet industrial circle day How the change that the moon is different, so making hydraulic valve obtain intelligentized control method become current topmost problem with being automatically adjusted. Hydraulic high-speed on-off valve door to be used the mode of digital valve to complete unlatching and the Guan Bi of valve by we, uses differential pressure pick-up Make hydraulic valve that digitized, intelligent and integrated is better achieved Deng equipment.

Summary of the invention

The purpose of this utility model is aiming at hydraulic valve electric current and is precisely controlled the imperfect of technology, it is provided that Yi Zhongke That lean on, stable Hydraulic high-speed on-off valve door detection and the circuit of control device.

For realizing object above, the technical solution adopted in the utility model is:

The measurement of a kind of hydraulic selector valve and control circuit, including RAM plate basic circuit part, displacement signal detection electricity Road part and control signal output circuit part.

RAM plate basic circuit part includes that CPU, voltage filter modular circuit, voltage transformation module circuit, serial ports download journey Sequence modular circuit, clock module circuit, startup modular circuit and externally fed download interface circuit；Described CPU uses STM32F407VGT6 chip；

Described voltage filter module includes that digital voltage VCC filtering and analog voltage AVCC filter two parts.Digital voltage VCC filtering part includes four electric capacity.Wherein one end of the first filter capacitor CV17, one end of the second filter capacitor CV18, One end of three filter capacitor CV19, one end of the 4th filter capacitor CV20 are all connected with power supply VCC end, four filter capacitors another Outer one end all ground connection.

Described analog voltage AVCC filtering includes two electric capacity.Wherein one end of the 5th filter capacitor CA7, the 6th filtered electrical The all one end with analog power AVCC, one end holding CA8 are connected and connect 22 feet of CPU, and the other end of two filter capacitors all connects Simulation ground AGND.

Described voltage transformation module includes an electric capacity.Wherein one end of the 7th filter capacitor CCAP2 connects with 49 feet of CPU Connect, the other end ground connection of the 7th filter capacitor CCAP2.

The described serial ports module that downloads includes two resistance and an electric capacity.One end of first divider resistance RB3 and the One end of two divider resistance RB4 connects, and the other end of the first divider resistance RB3 is connected with the pin 94 of CPU.First storage capacitor One end of CRES1 is connected with the NRST interface of CPU, and the other end of the other end and the second divider resistance RB4 connects and ground connection.

Described clock module includes a crystal oscillator and two electric capacity；One end of first crystal oscillator Y1 and the second storage capacitor CY1 One end connect, and be connected with the pin 12 of CPU；The other end of the first crystal oscillator Y1 and one end of the 3rd storage capacitor CY2 connect, And be connected with the pin 13 of CPU.The other end of the second storage capacitor CY1, the other end all ground connection of the 3rd storage capacitor CY2.

Described startup module includes a resistance.One end of first pull down resistor RB1 is connected with the pin 37 of CPU, another End ground connection.

91 feet of described CPU and one end of the 3rd divider resistance RCAN1 connect, the other end of the 3rd divider resistance RCAN1 4 feet of chip U5 integrated with CAN interface are connected；52 feet of CPU and one end of the 4th divider resistance RCAN3 connect, the 4th dividing potential drop 1 foot of the other end of resistance RCAN3 chip integrated with described CAN interface U5 is connected.74 feet of CPU, 99 feet, 27 feet, 10 feet Ground connection, 50 feet, 75 feet, 100 feet, 28 feet, 11 feet meet power supply VCC, and 20 foot ground connection simulation ground AGND, 21 feet, 22 feet connect simulation electricity Source AVCC；73 feet of CPU and one end of the first decoupling capacitor CCAP1 connect, the other end ground connection of the first decoupling capacitor CCAP1； 19 feet of CPU connect another termination power VCC of the first pull-up resistor RA1, the first pull-up resistor RA1；29 feet of CPU connect the One end of five divider resistance RS6, the other end of the 5th divider resistance RS6 connects one end of the 8th filter capacitor CS5, and connects The positive input of LVDT part the first operational amplifier U3A, the other end of the 8th filter capacitor CS5 connects simulation ground AGND；40 feet of CPU connect one end of the 6th divider resistance RT1, and the other end of the 6th divider resistance RT1 connects described left PWM control First current-limiting resistance R11, the other end of the tenth current-limiting resistance R41 in the H-bridge circuit module of system；42 feet of CPU connect the 7th point One end of piezoresistance RT3, the other end of the 7th divider resistance RT3 connects the 7th limit in the H-bridge circuit module that described left PWM controls Leakage resistance R31, the other end of the 5th current-limiting resistance R21；63 feet of CPU connect one end of the 8th divider resistance RT2, the 8th dividing potential drop The other end of resistance RT2 connects the 11st current-limiting resistance R51 in the H-bridge circuit module that described right PWM controls, the 20th current limliting electricity The other end of resistance R81；64 feet of CPU connect one end of the 9th divider resistance RT4, and the other end of the 9th divider resistance RT4 connects 17th current-limiting resistance R71, the other end of the 15th current-limiting resistance R61 in the H-bridge circuit module that described right PWM controls.CPU exists Pin not mentioned herein is the most built on stilts；

In addition with externally fed interface P0, pin 1 meets power supply VCC, and pin 2 connects the pin 72 of CPU, and pin 3 connects CPU's Pin 76, pin 4 ground connection.

Described CAN transceiver module includes a resistance and CAN interface integrated chip U5；The type of CAN interface integrated chip U5 Number it is SN65HVD232DR；7 feet of one end chip integrated with CAN interface U5 of the tenth divider resistance RCAN4 are connected, the other end with 6 feet of CAN interface integrated chip U5 connect.The 2 foot ground connection of CAN interface integrated chip U5；3 feet of CAN interface integrated chip U5 It is connected with power supply VCC end.

Power supply process part includes the main filtration module of blood pressure lowering, control signal detection module, input power detection module, voltage Filtration module and ground connection isolation module.

The main filter circuit module of described blood pressure lowering includes a low-dropout regulator, 26 electric capacity and two ferrite magnetics Pearl；The model of low-dropout regulator U4 is CAT6219-330TDGT3；The model of ferrite bean is HTY100505T-221Y- N；One end of 9th filter capacitor CP7, one end of the tenth filter capacitor CP8 are connected with+5V power supply and connect the first low voltage difference voltage stabilizing 1 foot of device U4, the other end of two filter capacitors all ground connection GND.One end of 11st filter capacitor CP14, the 12nd filtered electrical 4 feet of one end and the first low-dropout regulator U4 of holding CP15 connect, the other end of two filter capacitors all ground connection.13rd filter One end of ripple electric capacity CV1, one end of the 14th filter capacitor CV2, one end of the 15th filter capacitor CV3, the 16th filtered electrical Hold one end of CV4, one end of the 17th filter capacitor CV5, one end of the 18th filter capacitor CV6, the 19th filter capacitor CV7 One end of one end, one end of the 20th filter capacitor CV8 and the first ferrite bean FB3 connect, and connect the first low voltage difference 5 feet of manostat U4, the other end ground connection of eight filter capacitors.The other end of the first ferrite bean FB3 and the 21st filter One end of ripple electric capacity CV9, one end of the 22nd filter capacitor CV10, one end of the 23rd filter capacitor CV11, the 20th One end of four filter capacitor CV12, one end of the 25th filter capacitor CV13, one end of the 26th filter capacitor CV14, One end of 27 filter capacitor CV15, one end of the 28th filter capacitor CV16 all connect, and are connected to power supply VCC, and eight The other end of individual filter capacitor all ground connection.One end of 29th filter capacitor CA1, one end of the 30th filter capacitor CA2, One end of 31 filter capacitor CA3 and one end of the second ferrite bean FB4 connect, and connect the first low-dropout regulator U4 5 feet, three filter capacitors the other end ground connection simulation ground AGND.The other end and the 32nd of the second ferrite bean FB4 One end of filter capacitor CA4, one end of the 33rd filter capacitor CA5, one end of the 34th filter capacitor CA6 all connect, And it is connected to analog power AVCC, the other end of three filter capacitors all ground connection simulation ground AGND.

Described control signal test section divides and includes the socket of 6 ports, two resistance and an electric capacity.The 1 of socket P1 Port connects voltage VIN；2 ports of socket P1,6 ports all grounded shield ground EGND；5 ports of socket P1,4 ports connect successively Connect 7 feet of CAN interface integrated chip U5,6 feet；3 ports of socket P1 connect one end of the 11st divider resistance RC1 and connect, The other end of the 11st divider resistance RC1 and one end of the 12nd divider resistance RC2, one end of the 35th filter capacitor CC1 Connect, and be connected to 26 feet of CPU；The other end of the 12nd divider resistance RC2 and the other end of the 35th filter capacitor CC1 All ground connection.

Described voltage VIN filter circuit includes 6 electric capacity.One end of 36th filter capacitor CP1, the 37th filtering One end of electric capacity CP2, one end of the 38th filter capacitor CP3, one end of the 39th filter capacitor CP4, the 40th filtering One end of electric capacity CP5, one end of the 41st filter capacitor CP6 are all connected to power supply VIN, and the other end of six filter capacitors is all Grounded shield ground EGND.

Described input power VIN testing circuit includes 2 resistance and an electric capacity.One end of 13rd divider resistance RN1 Meeting power supply VIN, one end of the other end and one end of the 14th divider resistance RN2, the 42nd filter capacitor CN1 connects, and even Receive 25 feet of CPU.The other end of the 14th divider resistance RN2, the other end all ground connection of the 42nd filter capacitor CN1.

Described ground connection isolation module includes two ferrite beans, and the model of ferrite bean is HTY100505T-221Y- N；The one termination simulation ground AGND of the 3rd ferrite bean FB5, other end ground connection；4th ferrite bean FB6 mono-termination shielding Ground EGND, other end ground connection.

Institute's displacement detection circuit includes five resistance, four electric capacity, two operational amplifiers, Schottky two poles Pipe.The model of the first operational amplifier and the second operational amplifier is LMC6482AIMX/NOPB；The model of Schottky diode For NSR0140P2T5G；The inverting input of the first operational amplifier U3A and one end of the 43rd filter capacitor CS2, the tenth One end of five divider resistance RS2 is connected, and one end of normal phase input end and the second pull down resistor RS7 is connected, outfan and the 40th The other end of three filter capacitor CS2, the other end of the 15th divider resistance RS2, one end of the 16th divider resistance RS1 connect, And it is connected to 23 feet of CPU.The inverting input of the second operational amplifier U3B and one end of the 17th divider resistance RS5, the 3rd One end of pull down resistor RS3, one end of the 44th filter capacitor CS3 connect, normal phase input end and the 18th divider resistance RS4 One end, one end of the 45th filter capacitor CS4, the first Schottky diode DS1 negative pole connect, outfan and the 17th The other end of divider resistance RS5 connects, and is connected to 24 feet of CPU.The other end of the second pull down resistor RS7, the 3rd drop-down electricity The resistance other end of RS3, the other end of the 44th filter capacitor CS3, the other end of the 45th filter capacitor CS4, first Xiao Positive pole all ground connection simulation ground AGND of special based diode DS1.1 foot of connector Ps and one end of the 46th filter capacitor CS1 Connecting, the other end of the 46th filter capacitor CS1 and the other end of the 16th divider resistance RS1 connect；3 feet of connector Ps Connect with the other end of the 18th divider resistance RS4；2 feet of connector Ps meet simulation ground AGND.

Signal generating circuit includes switching power circuit and filter circuit.

Described switching power circuit module includes a suitching type voltage-releasing voltage stabilizer, two resistance and an electric capacity；Described The model of suitching type voltage-releasing voltage stabilizer be U1AOZ1280CI；1 pin of the first suitching type voltage-releasing voltage stabilizer U1,6 pins and The two ends of one feedback capacity C5 connect, 2 pin ground connection, 3 pins and one end of the 19th divider resistance R1, the 20th divider resistance One end of R2 connects, and 4 pins and 5 pins, power supply VIN connect.The other end of the 19th divider resistance R1 is connected with+5V power supply, The other end ground connection of the 20th divider resistance R2.

Described filter circuit module includes 14 electric capacity, two ferrite beans, an inductance and a Schottky two Pole is managed；The model of described Schottky diode is MBRA160T3G；The model of ferrite bean is HFY100505T-221Y- N；One end of first filter inductance L1 connects with 6 pins of the negative pole of the second Schottky diode DP1, the first voltage-releasing voltage stabilizer U1 Connect.The other end of the first filter inductance L1 and one end of the 47th filter capacitor C6, one end of the 48th filter capacitor C7, One end of 49th filter capacitor C8, one end of the 50th filter capacitor C9, one end of the 51st filter capacitor C10, One end of 52 filter capacitor C11, one end of the 5th ferrite bean FB1 connect.The other end of the 5th ferrite bean FB1 With one end of the 53rd filter capacitor C12, one end of the 54th filter capacitor C13, the one of the 55th filter capacitor C14 End, one end of the 56th filter capacitor C15, one end of the 6th ferrite bean FB2 connect.6th ferrite bean FB2's The other end and one end of the 57th filter capacitor C16, one end of the 58th filter capacitor C17, the 59th filter capacitor One end of C18, one end of the 60th filter capacitor C19 connect and connect+5V out-put supply.The other end of 14 filter capacitors Positive pole all ground connection with the second Schottky diode DP1.

The H-bridge circuit that PWM controls includes H-bridge circuit and filter circuit, the H-bridge circuit of right PWM control that left PWM controls And filter circuit.

The filter circuit of the H-bridge circuit that described left PWM controls includes four electric capacity.Wherein the 61st filter capacitor CP10 One end, one end of the 62nd filter capacitor CP11, one end of the 63rd filter capacitor CP12, the 64th filter capacitor One end of CP13 is all connected with power supply VIN end, and the other end of four filter capacitors all connects shielding ground.

The H-bridge circuit module that described left PWM controls includes the connector of 2 ports, two dual pathways field effect transistor, four Individual general triode, four Zener diodes, 16 resistance (ten current-limiting resistances, four discharge resistances, two load electricity Resistance)；The model of described dual pathways field effect transistor is BSO615CG；The model of general triode is BC847BPDW1T1G；First The 1 pin ground connection of general triode T1, one end of 2 pins and the first current-limiting resistance R11 connects, 6 pins and the second current-limiting resistance One end of R12 connects, and remaining pin do not mentioned in this article is the most built on stilts.Pin 4 and the power supply VIN of the second general triode T2 Connecting, pin 5 and pin 6 are connected with the two ends of the 3rd current-limiting resistance R23, and one end of pin 3 and the 4th current-limiting resistance R22 is even Connecing, pin 2 is connected with one end of the 5th current-limiting resistance R21, pin 1 ground connection.The pin 6 of the 3rd general triode T3 and the 6th limit One end of leakage resistance R32 connects, and pin 2 is connected with one end of the 7th current-limiting resistance R31, pin 1 ground connection.4th general triode The pin 4 of T4 is connected with input power VIN, and pin 5 and pin 6 are connected with the two ends of the 8th current-limiting resistance R43, pin 3 and One end of nine current-limiting resistance R42 connects, and pin 2 is connected with one end of the tenth current-limiting resistance R41, pin 1 ground connection；

The pin 4 of the first dual pathways field effect transistor Q1 and one end of the first discharge resistance RD1, the first Zener diode D1 One end, one end of the second current-limiting resistance R12 connect, pin 2 and one end of the second discharge resistance RD2, the second Zener diode D2 One end, one end of the 4th current-limiting resistance R22, first detection resistance RL2 one end connect, pin 5, pin 6, pin 7, pin 1 port of 8 and connector PVL connects.The pin 4 of the second bilateral field effect transistor Q2 and one end of the 3rd discharge resistance RD3, the 3rd One end of Zener diode D3, one end of the 6th current-limiting resistance R32 connect, pin 2 and the other end of the 4th discharge resistance RD4, The other end of the 4th Zener diode D4, one end of the 9th current-limiting resistance R42 connect, pin 5, pin 6, pin 7, pin 8 and 2 ports of connector PVL connect.The other end of the first Zener diode D1, the other end of the first discharge resistance RD1, first pair The pin 3 of pin the 3, second dual pathways field effect transistor Q2 of passage field effect transistor Q1, the other end of the 3rd discharge resistance RD3, Another termination power VIN of three Zener diode D3, the other end of the second Zener diode D2, the second discharge resistance RD2 another One end, pin the 1, the 4th discharge resistance RD4 of pin the 1, second dual pathways field effect transistor Q2 of the first dual pathways field effect transistor Q1 The other end, the other end of the second Zener diode D4, one end of the first resistance RL2 and the second detection resistance RL1 one end even Connect, the other end of the second detection resistance RL1 and another termination shielding ground of the first detection resistance RL2.

The filter circuit of the H-bridge circuit that described right PWM controls includes four electric capacity.Wherein the 65th filter capacitor CP20 One end, one end of the 66th filter capacitor CP21, one end of the 67th filter capacitor CP22, the 68th filter capacitor One end of CP23 is all connected with power supply VIN end, and the other end of four filter capacitors all connects shielding ground.

The H-bridge circuit module that described right PWM controls includes two dual pathways field effect transistor, four general triodes, four Zener diode, 16 resistance (ten current-limiting resistances, four discharge resistances, two load resistances)；Described bilateral place where Taoist rites are performed The model of effect pipe is BSO615CG；The model of general triode is BC847BPDW1T1G；1 pipe of the 5th general triode T5 Foot ground connection, one end of 2 pins and the 11st current-limiting resistance R51 connects, and one end of 6 pins and the 12nd current-limiting resistance R52 connects, Remaining pin do not mentioned in this article is the most built on stilts.The clematis stem pin 4 of triode T6 is connected with power supply VIN, pin 5 and pipe Foot 6 is connected with the two ends of the 13rd current-limiting resistance R63, and pin 3 is connected with one end of the 14th current-limiting resistance R62, pin 2 and One end of 15 current-limiting resistance R61 connects, pin 1 ground connection.Pin the 6 and the 16th current-limiting resistance of the 7th general triode T7 One end of R72 connects, and pin 2 is connected with one end of the 17th current-limiting resistance R71, pin 1 ground connection.8th general triode T8's Pin 4 is connected with input power VIN, and pin 5 and pin 6 are connected with the two ends of the 18th current-limiting resistance R83, pin 3 and the tenth One end of nine current-limiting resistance R82 connects, and pin 2 is connected with one end of the 20th current-limiting resistance R81, pin 1 ground connection；

The pin 4 of the 3rd dual pathways field effect transistor Q5 and one end of the 5th discharge resistance RD5, the 5th Zener diode D5 One end, one end of the 12nd current-limiting resistance R52 connect, pin 2 and one end of the 6th discharge resistance RD6, the 6th Zener diode One end of D6, the 14th current-limiting resistance R62 connect, and 1 port of pin 5, pin 6, pin 7, pin 8 and connector PVL connects. The pin 4 of the 4th bilateral field effect transistor Q6 and one end of the 7th discharge resistance RD7, one end of the 7th Zener diode D7, the tenth One end of six current-limiting resistance R72 connects, pin 2 and the other end of the 8th discharge resistance RD8, the 8th Zener diode D8 another End, one end of the 16th current-limiting resistance R72 connect, and 2 ports of pin 5, pin 6, pin 7, pin 8 and connector PVL connect. The other end of the 5th Zener diode D5, the other end of the 5th discharge resistance RD5, the pin 3 of the 3rd dual pathways field effect transistor Q5, The other end of pin the 3, the 7th discharge resistance RD7 of the 4th dual pathways field effect transistor Q6, the other end of the 7th Zener diode D7 Connect power supply VIN, the other end of the 6th Zener diode D6, the other end of the 6th discharge resistance RD6, the 3rd dual pathways field effect transistor The other end of pin the 1, the 8th discharge resistance RD8 of pin the 1, the 4th dual pathways field effect transistor Q6 of Q5, the 8th Zener diode One end of the other end of D8, one end of the 3rd detection resistance RL5 and the 4th resistance RL6 connects, and the 3rd detects another of resistance RL5 Another termination shielding ground of end and the 4th detection resistance RL6.

Detection signal filter circuit includes left-side signal filter circuit and right-side signal filter circuit.

Described left-side signal filter circuit includes two resistance, four electric capacity.One end of 21st divider resistance RL3 with One end of 22nd divider resistance RL4, one end of the 69th filter capacitor CL1, one end of the 70th filter capacitor CL2 connect Connect, the other end of the 22nd divider resistance RL4 and one end of the 71st filter capacitor CL3, the 72nd filter capacitor CL4 One end connect and connect the ADC123_10 interface of CPU.The other end of the 69th filter capacitor CL1, the 70th filter capacitor The other end of CL2, the other end of the 71st filter capacitor CL3, the other end all ground connection of the 72nd filter capacitor CL4；

Described right-side signal filter circuit includes two resistance, four electric capacity.One end of 23rd divider resistance RL7 with One end of 73rd filter capacitor CL5, one end of the 74th filter capacitor CL6, one end of the 24th divider resistance RL8 Connect, the other end of the 24th divider resistance RL8 and one end of the 75th filter capacitor CL7, the 76th filter capacitor One end of CL8 connects and connects the ADC123_11 interface of CPU.The other end of the 73rd filter capacitor CL5, the 74th filtering The other end of electric capacity CL6, the other end of the 75th filter capacitor CL7, the other end of the 76th filter capacitor CL8 all connect Ground.

Beneficial effect:

Hydraulic high-speed on-off valve door detection and control the circuit of device through practice examining, can effectively measuring go out valve displacement Corresponding magnitude of voltage, thus it is converted into corresponding control valve gate signal, its error is in insignificant scope.Hydraulic valve switchs Detection and control device, may be used in hydraulic valve control system, and its circuit design is simple, and cost performance is high, can realize in real time Communication, practical value is obvious.

Accompanying drawing explanation

Fig. 1 is the CPU in RAM plate basic circuit part of the present utility model, voltage filter modular circuit, voltage modulus of conversion Block circuit, serial ports download modular circuit, clock module circuit, start modular circuit and externally fed download interface circuit；

Fig. 2 is the CAN transceiver module circuit part in the RAM plate basic circuit part of utility model；

Fig. 3-1 is the main filtration module of blood pressure lowering in power supply process part；

Fig. 3-2 is the control signal detection module in power supply process part；

Fig. 3-3 is the input power detection module in power supply process part；

Fig. 3-4 is the voltage filter module in power supply process part；

Fig. 3-5 is the ground connection isolation module in power supply process part；

Fig. 4 is displacement detecting circuit；

Fig. 5 is that signal generating circuit includes switching power circuit and filter circuit；

Fig. 6 is the H-bridge circuit of left PWM control and corresponding filter circuit；

Fig. 7 is the H-bridge circuit of right PWM control and corresponding filter circuit；

Fig. 8 is filter circuit.

Detailed description of the invention

Implement below in conjunction with schematic diagram and concrete operations that the utility model is described in further detail, to help association area Researcher has a more deep understanding to thought of the present utility model.

The measurement of a kind of hydraulic valve switch and control circuit, including RAM plate basic circuit part, displacement signal testing circuit Output circuit part is controlled with signal.

As it is shown in figure 1, RAM plate basic circuit part include CPU, voltage filter modular circuit, voltage transformation module circuit, Serial ports download modular circuit, clock module circuit, start modular circuit and externally fed download interface circuit；Described CPU uses STM32F407VGT6 chip；

Described voltage filter module includes that digital voltage VCC filtering and analog voltage AVCC filter two parts.Digital voltage VCC filtering part includes four electric capacity.Wherein one end of the first filter capacitor CV17, one end of the second filter capacitor CV18, One end of three filter capacitor CV19, one end of the 4th filter capacitor CV20 are all connected with power supply VCC end, four filter capacitors another Outer one end all ground connection.

Described analog voltage AVCC filtering includes two electric capacity.Wherein one end of the 5th filter capacitor CA7, the 6th filtered electrical The all one end with analog power AVCC, one end holding CA8 are connected and connect 22 feet of CPU, and the other end of two filter capacitors all connects Simulation ground AGND.

Described voltage transformation module includes an electric capacity.Wherein one end of the 7th filter capacitor CCAP2 connects with 49 feet of CPU Connect, the other end ground connection of the 7th filter capacitor CCAP2.

The described serial ports module that downloads includes two resistance and an electric capacity.One end of first divider resistance RB3 and the One end of two divider resistance RB4 connects, and the other end of the first divider resistance RB3 is connected with the pin 94 of CPU.First storage capacitor One end of CRES1 is connected with the NRST interface of CPU, and the other end of the other end and the second divider resistance RB4 connects and ground connection.

Described clock module includes a crystal oscillator and two electric capacity；One end of first crystal oscillator Y1 and the second storage capacitor CY1 One end connect, and be connected with the pin 12 of CPU；The other end of the first crystal oscillator Y1 and one end of the 3rd storage capacitor CY2 connect, And be connected with the pin 13 of CPU.The other end of the second storage capacitor CY1, the other end all ground connection of the 3rd storage capacitor CY2.

Described startup module includes a resistance.One end of first pull down resistor RB1 is connected with the pin 37 of CPU, another End ground connection.

91 feet of described CPU and one end of the 3rd divider resistance RCAN1 connect, the other end of the 3rd divider resistance RCAN1 4 feet of chip U5 integrated with CAN interface are connected；52 feet of CPU and one end of the 4th divider resistance RCAN3 connect, the 4th dividing potential drop 1 foot of the other end of resistance RCAN3 chip integrated with described CAN interface U5 is connected.74 feet of CPU, 99 feet, 27 feet, 10 feet Ground connection, 50 feet, 75 feet, 100 feet, 28 feet, 11 feet meet power supply VCC, and 20 foot ground connection simulation ground AGND, 21 feet, 22 feet connect simulation electricity Source AVCC；73 feet of CPU and one end of the first decoupling capacitor CCAP1 connect, the other end ground connection of the first decoupling capacitor CCAP1； 19 feet of CPU connect another termination power VCC of the first pull-up resistor RA1, the first pull-up resistor RA1；29 feet of CPU connect the One end of five divider resistance RS6, the other end of the 5th divider resistance RS6 connects one end of the 8th filter capacitor CS5, and connects The positive input of LVDT part the first operational amplifier U3A, the other end of the 8th filter capacitor CS5 connects simulation ground AGND；40 feet of CPU connect one end of the 6th divider resistance RT1, and the other end of the 6th divider resistance RT1 connects described left PWM control First current-limiting resistance R11, the other end of the tenth current-limiting resistance R41 in the H-bridge circuit module of system；42 feet of CPU connect the 7th point One end of piezoresistance RT3, the other end of the 7th divider resistance RT3 connects the 7th limit in the H-bridge circuit module that described left PWM controls Leakage resistance R31, the other end of the 5th current-limiting resistance R21；63 feet of CPU connect one end of the 8th divider resistance RT2, the 8th dividing potential drop The other end of resistance RT2 connects the 11st current-limiting resistance R51 in the H-bridge circuit module that described right PWM controls, the 20th current limliting electricity The other end of resistance R81；64 feet of CPU connect one end of the 9th divider resistance RT4, and the other end of the 9th divider resistance RT4 connects 17th current-limiting resistance R71, the other end of the 15th current-limiting resistance R61 in the H-bridge circuit module that described right PWM controls.CPU exists Pin not mentioned herein is the most built on stilts；

In addition with externally fed interface P0, pin 1 meets power supply VCC, and pin 2 connects the pin 72 of CPU, and pin 3 connects CPU's Pin 76, pin 4 ground connection.

As in figure 2 it is shown, described CAN transceiver module includes a resistance and CAN interface integrated chip U5；CAN interface is integrated The model of chip U5 is SN65HVD232DR；One end of tenth divider resistance RCAN4 connects with 7 feet of CAN interface integrated chip U5 Connecing, 6 feet of other end chip integrated with CAN interface U5 are connected.The 2 foot ground connection of CAN interface integrated chip U5；CAN interface is integrated 3 feet of chip U5 are connected with power supply VCC end.

Power supply process part includes the main filtration module of blood pressure lowering, control signal detection module, input power detection module, voltage Filtration module and ground connection isolation module.

As shown in figure 3-1, the main filter circuit module of described blood pressure lowering includes a low-dropout regulator, 26 electric capacity and Two ferrite beans；The model of low-dropout regulator U4 is CAT6219-330TDGT3；The model of ferrite bean is HTY100505T-221Y-N；One end of 9th filter capacitor CP7, one end of the tenth filter capacitor CP8 are connected also with+5V power supply Connect 1 foot of the first low-dropout regulator U4, the other end of two filter capacitors all ground connection GND.11st filter capacitor CP14's 4 feet of one end, one end of the 12nd filter capacitor CP15 and the first low-dropout regulator U4 connect, another of two filter capacitors Hold all ground connection.One end of 13rd filter capacitor CV1, one end of the 14th filter capacitor CV2, the 15th filter capacitor CV3 One end, one end of the 16th filter capacitor CV4, one end of the 17th filter capacitor CV5, one end of the 18th filter capacitor CV6, One end of one end of 19th filter capacitor CV7, one end of the 20th filter capacitor CV8 and the first ferrite bean FB3 connects, And connect 5 feet of the first low-dropout regulator U4, the other end ground connection of eight filter capacitors.First ferrite bean FB3's is another One end and one end of the 21st filter capacitor CV9, one end of the 22nd filter capacitor CV10, the 23rd filter capacitor One end of CV11, one end of the 24th filter capacitor CV12, one end of the 25th filter capacitor CV13, the 26th filtering One end of electric capacity CV14, one end of the 27th filter capacitor CV15, one end of the 28th filter capacitor CV16 all connect, and It is connected to power supply VCC, the other end of eight filter capacitors all ground connection.One end of 29th filter capacitor CA1, the 30th filtering One end of one end of electric capacity CA2, one end of the 31st filter capacitor CA3 and the second ferrite bean FB4 connects, and connects the 5 feet of one low-dropout regulator U4, the other end ground connection simulation ground AGND of three filter capacitors.Second ferrite bean FB4's The other end and one end of the 32nd filter capacitor CA4, one end of the 33rd filter capacitor CA5, the 34th filter capacitor One end of CA6 all connects, and is connected to analog power AVCC, the other end of three filter capacitors all ground connection simulation ground AGND.

As shown in figure 3-2, described control signal test section divides and includes the socket of 6 ports, two resistance and an electricity Hold.1 port of socket P1 connects voltage VIN；2 ports of socket P1,6 ports all grounded shield ground EGND；5 ends of socket P1 Mouth, 4 ports are sequentially connected with 7 feet of CAN interface integrated chip U5,6 feet；3 ports of socket P1 connect the 11st divider resistance One end of RC1 connects, the other end of the 11st divider resistance RC1 and one end of the 12nd divider resistance RC2, the 35th filtering One end of electric capacity CC1 connects, and is connected to 26 feet of CPU；The other end of the 12nd divider resistance RC2 and the 35th filtered electrical Hold the other end all ground connection of CC1.

As shown in Fig. 3-3, described voltage VIN filter circuit includes 6 electric capacity.One end of 36th filter capacitor CP1, One end of 37th filter capacitor CP2, one end of the 38th filter capacitor CP3, the one of the 39th filter capacitor CP4 End, one end of the 40th filter capacitor CP5, one end of the 41st filter capacitor CP6 are all connected to power supply VIN, six filtering The other end of electric capacity all grounded shield ground EGND.

As shown in Figure 3-4, described input power VIN testing circuit includes 2 resistance and an electric capacity.13rd dividing potential drop electricity The one termination power VIN of resistance RN1, the other end and one end of the 14th divider resistance RN2, the one of the 42nd filter capacitor CN1 End connects, and is connected to 25 feet of CPU.The other end of the 14th divider resistance RN2, the 42nd filter capacitor CN1 another Hold all ground connection.

As in Figure 3-5, described ground connection isolation module includes two ferrite beans, and the model of ferrite bean is HTY100505T-221Y-N；The one termination simulation ground AGND of the 3rd ferrite bean FB5, other end ground connection；4th ferrite magnetic Pearl FB6 mono-termination shielding ground EGND, other end ground connection.

As shown in Figure 4, institute's displacement detection circuit includes five resistance, four electric capacity, two operational amplifiers, Xiao Special based diode.The model of the first operational amplifier and the second operational amplifier is LMC6482AIMX/NOPB；Schottky two pole The model of pipe is NSR0140P2T5G；The inverting input of the first operational amplifier U3A and the one of the 43rd filter capacitor CS2 End, the 15th divider resistance RS2 one end be connected, one end of normal phase input end and the second pull down resistor RS7 be connected, outfan with The other end of the 43rd filter capacitor CS2, the other end of the 15th divider resistance RS2, one end of the 16th divider resistance RS1 Connect, and be connected to 23 feet of CPU.The inverting input of the second operational amplifier U3B and the one of the 17th divider resistance RS5 End, one end of the 3rd pull down resistor RS3, one end of the 44th filter capacitor CS3 connect, normal phase input end and the 18th dividing potential drop One end of resistance RS4, one end of the 45th filter capacitor CS4, the negative pole of the first Schottky diode DS1 connect, outfan It is connected with the other end of the 17th divider resistance RS5, and is connected to 24 feet of CPU.The other end of the second pull down resistor RS7, The other end of three pull down resistor RS3, the other end of the 44th filter capacitor CS3, the 45th filter capacitor CS4 another End, positive pole all ground connection simulation ground AGND of the first Schottky diode DS1.1 foot of connector Ps and the 46th filter capacitor One end of CS1 connects, and the other end of the 46th filter capacitor CS1 and the other end of the 16th divider resistance RS1 connect；Patch 3 feet of part Ps and the other end of the 18th divider resistance RS4 connect；2 feet of connector Ps meet simulation ground AGND.

As it is shown in figure 5, signal generating circuit includes switching power circuit and filter circuit.

Described switching power circuit module includes a suitching type voltage-releasing voltage stabilizer, two resistance and an electric capacity；Described The model of suitching type voltage-releasing voltage stabilizer be U1AOZ1280CI；1 pin of the first suitching type voltage-releasing voltage stabilizer U1,6 pins and The two ends of one feedback capacity C5 connect, 2 pin ground connection, 3 pins and one end of the 19th divider resistance R1, the 20th divider resistance One end of R2 connects, and 4 pins and 5 pins, power supply VIN connect.The other end of the 19th divider resistance R1 is connected with+5V power supply, The other end ground connection of the 20th divider resistance R2.

Described filter circuit module includes 14 electric capacity, two ferrite beans, an inductance and a Schottky two Pole is managed；The model of described Schottky diode is MBRA160T3G；The model of ferrite bean is HFY100505T-221Y- N；One end of first filter inductance L1 connects with 6 pins of the negative pole of the second Schottky diode DP1, the first voltage-releasing voltage stabilizer U1 Connect.The other end of the first filter inductance L1 and one end of the 47th filter capacitor C6, one end of the 48th filter capacitor C7, One end of 49th filter capacitor C8, one end of the 50th filter capacitor C9, one end of the 51st filter capacitor C10, One end of 52 filter capacitor C11, one end of the 5th ferrite bean FB1 connect.The other end of the 5th ferrite bean FB1 With one end of the 53rd filter capacitor C12, one end of the 54th filter capacitor C13, the one of the 55th filter capacitor C14 End, one end of the 56th filter capacitor C15, one end of the 6th ferrite bean FB2 connect.6th ferrite bean FB2's The other end and one end of the 57th filter capacitor C16, one end of the 58th filter capacitor C17, the 59th filter capacitor One end of C18, one end of the 60th filter capacitor C19 connect and connect+5V out-put supply.The other end of 14 filter capacitors Positive pole all ground connection with the second Schottky diode DP1.

The H-bridge circuit that PWM controls includes H-bridge circuit and filter circuit, the H-bridge circuit of right PWM control that left PWM controls And filter circuit.

As shown in Figure 6, the filter circuit of the H-bridge circuit that described left PWM controls includes four electric capacity.Wherein the 61st filter One end of ripple electric capacity CP10, one end of the 62nd filter capacitor CP11, one end of the 63rd filter capacitor CP12, the 60th One end of four filter capacitor CP13 is all connected with power supply VIN end, and the other end of four filter capacitors all connects shielding ground.

The H-bridge circuit module that described left PWM controls includes the connector of 2 ports, two dual pathways field effect transistor, four Individual general triode, four Zener diodes, 16 resistance (ten current-limiting resistances, four discharge resistances, two load electricity Resistance)；The model of described dual pathways field effect transistor is BSO615CG；The model of general triode is BC847BPDW1T1G；First The 1 pin ground connection of general triode T1, one end of 2 pins and the first current-limiting resistance R11 connects, 6 pins and the second current-limiting resistance One end of R12 connects, and remaining pin do not mentioned in this article is the most built on stilts.Pin 4 and the power supply VIN of the second general triode T2 Connecting, pin 5 and pin 6 are connected with the two ends of the 3rd current-limiting resistance R23, and one end of pin 3 and the 4th current-limiting resistance R22 is even Connecing, pin 2 is connected with one end of the 5th current-limiting resistance R21, pin 1 ground connection.The pin 6 of the 3rd general triode T3 and the 6th limit One end of leakage resistance R32 connects, and pin 2 is connected with one end of the 7th current-limiting resistance R31, pin 1 ground connection.4th general triode The pin 4 of T4 is connected with input power VIN, and pin 5 and pin 6 are connected with the two ends of the 8th current-limiting resistance R43, pin 3 and One end of nine current-limiting resistance R42 connects, and pin 2 is connected with one end of the tenth current-limiting resistance R41, pin 1 ground connection；

The pin 4 of the first dual pathways field effect transistor Q1 and one end of the first discharge resistance RD1, the first Zener diode D1 One end, one end of the second current-limiting resistance R12 connect, pin 2 and one end of the second discharge resistance RD2, the second Zener diode D2 One end, one end of the 4th current-limiting resistance R22, first detection resistance RL2 one end connect, pin 5, pin 6, pin 7, pin 1 port of 8 and connector PVL connects.The pin 4 of the second bilateral field effect transistor Q2 and one end of the 3rd discharge resistance RD3, the 3rd One end of Zener diode D3, one end of the 6th current-limiting resistance R32 connect, pin 2 and the other end of the 4th discharge resistance RD4, The other end of the 4th Zener diode D4, one end of the 9th current-limiting resistance R42 connect, pin 5, pin 6, pin 7, pin 8 and 2 ports of connector PVL connect.The other end of the first Zener diode D1, the other end of the first discharge resistance RD1, first pair The pin 3 of pin the 3, second dual pathways field effect transistor Q2 of passage field effect transistor Q1, the other end of the 3rd discharge resistance RD3, Another termination power VIN of three Zener diode D3, the other end of the second Zener diode D2, the second discharge resistance RD2 another One end, pin the 1, the 4th discharge resistance RD4 of pin the 1, second dual pathways field effect transistor Q2 of the first dual pathways field effect transistor Q1 The other end, the other end of the second Zener diode D4, one end of the first resistance RL2 and the second detection resistance RL1 one end even Connect, the other end of the second detection resistance RL1 and another termination shielding ground of the first detection resistance RL2.

As it is shown in fig. 7, the filter circuit of the H-bridge circuit of described right PWM control includes four electric capacity.Wherein the 65th filter One end of ripple electric capacity CP20, one end of the 66th filter capacitor CP21, one end of the 67th filter capacitor CP22, the 60th One end of eight filter capacitor CP23 is all connected with power supply VIN end, and the other end of four filter capacitors all connects shielding ground.

The H-bridge circuit module that described right PWM controls includes two dual pathways field effect transistor, four general triodes, four Zener diode, 16 resistance (ten current-limiting resistances, four discharge resistances, two load resistances)；Described bilateral place where Taoist rites are performed The model of effect pipe is BSO615CG；The model of general triode is BC847BPDW1T1G；1 pipe of the 5th general triode T5 Foot ground connection, one end of 2 pins and the 11st current-limiting resistance R51 connects, and one end of 6 pins and the 12nd current-limiting resistance R52 connects, Remaining pin do not mentioned in this article is the most built on stilts.The clematis stem pin 4 of triode T6 is connected with power supply VIN, pin 5 and pipe Foot 6 is connected with the two ends of the 13rd current-limiting resistance R63, and pin 3 is connected with one end of the 14th current-limiting resistance R62, pin 2 and One end of 15 current-limiting resistance R61 connects, pin 1 ground connection.Pin the 6 and the 16th current-limiting resistance of the 7th general triode T7 One end of R72 connects, and pin 2 is connected with one end of the 17th current-limiting resistance R71, pin 1 ground connection.8th general triode T8's Pin 4 is connected with input power VIN, and pin 5 and pin 6 are connected with the two ends of the 18th current-limiting resistance R83, pin 3 and the tenth One end of nine current-limiting resistance R82 connects, and pin 2 is connected with one end of the 20th current-limiting resistance R81, pin 1 ground connection；

The pin 4 of the 3rd dual pathways field effect transistor Q5 and one end of the 5th discharge resistance RD5, the 5th Zener diode D5 One end, one end of the 12nd current-limiting resistance R52 connect, pin 2 and one end of the 6th discharge resistance RD6, the 6th Zener diode One end of D6, the 14th current-limiting resistance R62 connect, and 1 port of pin 5, pin 6, pin 7, pin 8 and connector PVL connects. The pin 4 of the 4th bilateral field effect transistor Q6 and one end of the 7th discharge resistance RD7, one end of the 7th Zener diode D7, the tenth One end of six current-limiting resistance R72 connects, pin 2 and the other end of the 8th discharge resistance RD8, the 8th Zener diode D8 another End, one end of the 16th current-limiting resistance R72 connect, and 2 ports of pin 5, pin 6, pin 7, pin 8 and connector PVL connect. The other end of the 5th Zener diode D5, the other end of the 5th discharge resistance RD5, the pin 3 of the 3rd dual pathways field effect transistor Q5, The other end of pin the 3, the 7th discharge resistance RD7 of the 4th dual pathways field effect transistor Q6, the other end of the 7th Zener diode D7 Connect power supply VIN, the other end of the 6th Zener diode D6, the other end of the 6th discharge resistance RD6, the 3rd dual pathways field effect transistor The other end of pin the 1, the 8th discharge resistance RD8 of pin the 1, the 4th dual pathways field effect transistor Q6 of Q5, the 8th Zener diode One end of the other end of D8, one end of the 3rd detection resistance RL5 and the 4th resistance RL6 connects, and the 3rd detects another of resistance RL5 Another termination shielding ground of end and the 4th detection resistance RL6.

As shown in Figure 8, detection signal filter circuit includes left-side signal filter circuit and right-side signal filter circuit.

Described left-side signal filter circuit includes two resistance, four electric capacity.One end of 21st divider resistance RL3 with One end of 22nd divider resistance RL4, one end of the 69th filter capacitor CL1, one end of the 70th filter capacitor CL2 connect Connect, the other end of the 22nd divider resistance RL4 and one end of the 71st filter capacitor CL3, the 72nd filter capacitor CL4 One end connect and connect the ADC123_10 interface of CPU.The other end of the 69th filter capacitor CL1, the 70th filter capacitor The other end of CL2, the other end of the 71st filter capacitor CL3, the other end all ground connection of the 72nd filter capacitor CL4；

Described right-side signal filter circuit includes two resistance, four electric capacity.One end of 23rd divider resistance RL7 with One end of 73rd filter capacitor CL5, one end of the 74th filter capacitor CL6, one end of the 24th divider resistance RL8 Connect, the other end of the 24th divider resistance RL8 and one end of the 75th filter capacitor CL7, the 76th filter capacitor One end of CL8 connects and connects the ADC123_11 interface of CPU.The other end of the 73rd filter capacitor CL5, the 74th filtering The other end of electric capacity CL6, the other end of the 75th filter capacitor CL7, the other end of the 76th filter capacitor CL8 all connect Ground.

STM32F407VGT6 in described RAM plate basic circuit is a 32 single-chip microcomputers of ST Microelectronics, tool Standby CAN transmission-receiving function, excellent performance, reasonable price, fully meet the needs of hydraulic valve engineering field.Described displacement is examined First, second operational amplifier of slowdown monitoring circuit part is the low consumed power operational amplifier integrated chip LMC6482AIMX/ of TI company NOPB, its stable performance, meet requirements.The voltage-releasing voltage stabilizer of described switching power circuit module is ALPHA&Omega The suitching type voltage-releasing voltage stabilizer AOZ1280CI of Semiconductor company, its efficiency is high, easy to use, it is possible to flexibly for Various application scenarios are optimized.Field effect transistor in the H-bridge circuit that described PWM controls is ON Semiconductor company General (NPN/PNP) transistor BC847BPDW1T1G.Described field effect transistor is double P/N of Infineon technology company Passage enhancement mode field effect transistor BSO615CG.

Work process:

Hydraulic valve current valve position signal detected by displacement detecting circuit, according to required valve folding condition, pass through CPU calculate after obtain 4 tunnel control signals TIM1CH1, TIM1CH2, TIM8CH1, TIM8CH2 in controlling hydraulic valve 4 continue Electrical equipment folding, the folding of relay causes the movement of iron shot in 4 passages, if the iron shot in the upper left corner and the lower right corner moves, passage Conducting, liquid flows to the lower right corner from the upper left corner, and in valve, iron core moves right；If the iron shot in the upper right corner and the lower left corner moves, logical Road turns on, and liquid flows to the lower left corner from the upper right corner, and in valve, iron core is moved to the left, thus controls the switch of valve.Two, left side Relay is controlled by a circuit, and two, right side relay is controlled by another control circuit, and two control circuits are drawn respectively Stable signal VCL and VCR is input to CPU by two detection filtered circuit of signal VCL0 and VCR0, comes through CPU analyzing and processing Adjust control signal and control stablizing of relay to maintain.

Claims (1)

1. the measurement of hydraulic selector valve and control circuit, including RAM plate basic circuit part, displacement signal testing circuit part With control signal output circuit part；

It is characterized in that: described RAM plate basic circuit part includes CPU, voltage filter modular circuit, voltage transformation module electricity Road, serial ports download modular circuit, clock module circuit, start modular circuit and externally fed download interface circuit；Described CPU use STM32F407VGT6 chip；

Described voltage filter module includes that digital voltage VCC filtering and analog voltage AVCC filter two parts；Digital voltage VCC filters Ripple part includes four electric capacity；Wherein one end of the first filter capacitor CV17, one end of the second filter capacitor CV18, the 3rd filtering One end of electric capacity CV19, one end of the 4th filter capacitor CV20 are all connected with power supply VCC end, the other end of four filter capacitors All ground connection；

Described analog voltage AVCC filtering includes two electric capacity；Wherein one end of the 5th filter capacitor CA7, the 6th filter capacitor All one end with analog power AVCC, one end of CA8 are connected and connect 22 feet of CPU, and the other end of two filter capacitors all connects mould Intend ground AGND；

Described voltage transformation module includes an electric capacity；Wherein one end of the 7th filter capacitor CCAP2 is connected with 49 feet of CPU, The other end ground connection of the 7th filter capacitor CCAP2；

The described serial ports module that downloads includes two resistance and an electric capacity；One end of first divider resistance RB3 with second point One end of piezoresistance RB4 connects, and the other end of the first divider resistance RB3 is connected with the pin 94 of CPU；First storage capacitor One end of CRES1 is connected with the NRST interface of CPU, and the other end of the other end and the second divider resistance RB4 connects and ground connection；

Described clock module includes a crystal oscillator and two electric capacity；One end of first crystal oscillator Y1 and the one of the second storage capacitor CY1 End connects, and is connected with the pin 12 of CPU；The other end of the first crystal oscillator Y1 and one end of the 3rd storage capacitor CY2 connect, and with The pin 13 of CPU connects；The other end of the second storage capacitor CY1, the other end all ground connection of the 3rd storage capacitor CY2；

Described startup module includes a resistance；One end of first pull down resistor RB1 is connected with the pin 37 of CPU, another termination Ground；

91 feet of described CPU and one end of the 3rd divider resistance RCAN1 connect, the other end of the 3rd divider resistance RCAN1 and CAN 4 feet of Interface integration chip U5 connect；52 feet of CPU and one end of the 4th divider resistance RCAN3 connect, the 4th divider resistance 1 foot of the other end of RCAN3 chip integrated with described CAN interface U5 is connected；74 feet of CPU, 99 feet, 27 feet, 10 feet connect , 50 feet, 75 feet, 100 feet, 28 feet, 11 feet meet power supply VCC, and 20 foot ground connection simulation ground AGND, 21 feet, 22 feet connect analog power AVCC；73 feet of CPU and one end of the first decoupling capacitor CCAP1 connect, the other end ground connection of the first decoupling capacitor CCAP1；CPU 19 feet connect another termination power VCC of the first pull-up resistor RA1, the first pull-up resistor RA1；29 feet of CPU connect the 5th One end of divider resistance RS6, the other end of the 5th divider resistance RS6 connects one end of the 8th filter capacitor CS5, and connects LVDT The positive input of part the first operational amplifier U3A, the other end of the 8th filter capacitor CS5 connects simulation ground AGND；CPU 40 feet connect the 6th divider resistance RT1 one end, the other end of the 6th divider resistance RT1 connect described left PWM control H bridge electricity First current-limiting resistance R11, the other end of the tenth current-limiting resistance R41 in the module of road；42 feet of CPU connect the 7th divider resistance RT3 One end, the other end of the 7th divider resistance RT3 connects the 7th current-limiting resistance in the H-bridge circuit module that described left PWM controls R31, the other end of the 5th current-limiting resistance R21；63 feet of CPU connect one end of the 8th divider resistance RT2, the 8th divider resistance The other end of RT2 connects the 11st current-limiting resistance R51, the 20th current-limiting resistance in the H-bridge circuit module that described right PWM controls The other end of R81；64 feet of CPU connect one end of the 9th divider resistance RT4, and the other end of the 9th divider resistance RT4 connects institute State the 17th current-limiting resistance R71, the other end of the 15th current-limiting resistance R61 in the H-bridge circuit module that right PWM controls；CPU is at this The pin do not mentioned in literary composition is the most built on stilts；

In addition with externally fed interface P0, pin 1 meets power supply VCC, and pin 2 connects the pin 72 of CPU, and pin 3 connects the pin of CPU 76, pin 4 ground connection；

Described CAN transceiver module includes a resistance and CAN interface integrated chip U5；The model of CAN interface integrated chip U5 is SN65HVD232DR；7 feet of one end chip integrated with CAN interface U5 of the tenth divider resistance RCAN4 are connected, the other end and CAN 6 feet of Interface integration chip U5 connect；The 2 foot ground connection of CAN interface integrated chip U5；3 feet of CAN interface integrated chip U5 and electricity Source VCC end connects；

Power supply process part includes the main filtration module of blood pressure lowering, control signal detection module, input power detection module, voltage filter Module and ground connection isolation module；

The main filter circuit module of described blood pressure lowering includes a low-dropout regulator, 26 electric capacity and two ferrite beans； The model of low-dropout regulator U4 is CAT6219-330TDGT3；The model of ferrite bean is HTY100505T-221Y-N；The One end of nine filter capacitor CP7, one end of the tenth filter capacitor CP8 are connected with+5V power supply and meet the first low-dropout regulator U4 1 foot, the other end of two filter capacitors all ground connection GND；One end of 11st filter capacitor CP14, the 12nd filter capacitor One end of CP15 and 4 feet of the first low-dropout regulator U4 connect, the other end of two filter capacitors all ground connection；13rd filtering One end of electric capacity CV1, one end of the 14th filter capacitor CV2, one end of the 15th filter capacitor CV3, the 16th filter capacitor One end of CV4, one end of the 17th filter capacitor CV5, one end of the 18th filter capacitor CV6, the 19th filter capacitor CV7 One end of one end, one end of the 20th filter capacitor CV8 and the first ferrite bean FB3 connects, and it is steady to connect the first low voltage difference 5 feet of depressor U4, the other end ground connection of eight filter capacitors；The other end of the first ferrite bean FB3 and the 21st filtering One end of electric capacity CV9, one end of the 22nd filter capacitor CV10, one end of the 23rd filter capacitor CV11, the 24th One end of filter capacitor CV12, one end of the 25th filter capacitor CV13, one end of the 26th filter capacitor CV14, second One end of 17 filter capacitor CV15, one end of the 28th filter capacitor CV16 all connect, and are connected to power supply VCC, eight The other end of filter capacitor all ground connection；One end of 29th filter capacitor CA1, one end of the 30th filter capacitor CA2, the 3rd One end of 11 filter capacitor CA3 and one end of the second ferrite bean FB4 connect, and connect the first low-dropout regulator U4's 5 feet, the other end ground connection simulation ground AGND of three filter capacitors；The other end of the second ferrite bean FB4 and the 32nd filter One end of ripple electric capacity CA4, one end of the 33rd filter capacitor CA5, one end of the 34th filter capacitor CA6 all connect, and It is connected to analog power AVCC, the other end of three filter capacitors all ground connection simulation ground AGND；

Described control signal test section divides and includes the socket of 6 ports, two resistance and an electric capacity；1 port of socket P1 Connect voltage VIN；2 ports of socket P1,6 ports all grounded shield ground EGND；5 ports of socket P1,4 ports are sequentially connected with 7 feet of CAN interface integrated chip U5,6 feet；3 ports of socket P1 connect one end of the 11st divider resistance RC1 and connect, the One end of the other end of 11 divider resistance RC1 and one end of the 12nd divider resistance RC2, the 35th filter capacitor CC1 connects Connect, and be connected to 26 feet of CPU；The other end of the 12nd divider resistance RC2 and the other end of the 35th filter capacitor CC1 are all Ground connection；

Described voltage VIN filter circuit includes 6 electric capacity；One end of 36th filter capacitor CP1, the 37th filter capacitor One end of CP2, one end of the 38th filter capacitor CP3, one end of the 39th filter capacitor CP4, the 40th filter capacitor One end of CP5, one end of the 41st filter capacitor CP6 are all connected to power supply VIN, the other end of six filter capacitors all ground connection Shielding ground EGND；

Described input power VIN testing circuit includes 2 resistance and an electric capacity；The one termination electricity of the 13rd divider resistance RN1 Source VIN, one end of the other end and one end of the 14th divider resistance RN2, the 42nd filter capacitor CN1 connects, and is connected to 25 feet of CPU；The other end of the 14th divider resistance RN2, the other end all ground connection of the 42nd filter capacitor CN1；

Described ground connection isolation module includes two ferrite beans, and the model of ferrite bean is HTY100505T-221Y-N；The The one termination simulation ground AGND of three ferrite bean FB5, other end ground connection；4th ferrite bean FB6 mono-termination shielding ground EGND, other end ground connection；

Institute's displacement detection circuit includes five resistance, four electric capacity, two operational amplifiers, Schottky diodes；The The model of one operational amplifier and the second operational amplifier is LMC6482AIMX/NOPB；The model of Schottky diode is NSR0140P2T5G；The inverting input of the first operational amplifier U3A and one end of the 43rd filter capacitor CS2, the 15th One end of divider resistance RS2 is connected, and one end of normal phase input end and the second pull down resistor RS7 is connected, outfan and the 43rd The other end of filter capacitor CS2, the other end of the 15th divider resistance RS2, one end of the 16th divider resistance RS1 connect, and It is connected to 23 feet of CPU；The inverting input of the second operational amplifier U3B and one end of the 17th divider resistance RS5, the 3rd time One end of pull-up resistor RS3, one end connection of the 44th filter capacitor CS3, normal phase input end and the 18th divider resistance RS4's One end, one end of the 45th filter capacitor CS4, the negative pole of the first Schottky diode DS1 connect, outfan and the 17th point The other end of piezoresistance RS5 connects, and is connected to 24 feet of CPU；The other end of the second pull down resistor RS7, the 3rd pull down resistor The other end of RS3, the other end of the 44th filter capacitor CS3, the other end of the 45th filter capacitor CS4, the first Xiao Te The positive pole of based diode DS1 all ground connection simulation ground AGND；1 foot of connector Ps and one end of the 46th filter capacitor CS1 are even Connecing, the other end of the 46th filter capacitor CS1 and the other end of the 16th divider resistance RS1 connect；3 feet of connector Ps and The other end of the 18th divider resistance RS4 connects；2 feet of connector Ps meet simulation ground AGND；

Signal generating circuit includes switching power circuit and filter circuit；

Described switching power circuit module includes a suitching type voltage-releasing voltage stabilizer, two resistance and an electric capacity；Described cuts The model changing formula voltage-releasing voltage stabilizer is U1AOZ1280CI；1 pin, 6 pins and first of the first suitching type voltage-releasing voltage stabilizer U1 are anti- Feed holds the two ends of C5 and connects, 2 pin ground connection, 3 pins and one end of the 19th divider resistance R1, the 20th divider resistance R2 One end connects, and 4 pins and 5 pins, power supply VIN connect；The other end of the 19th divider resistance R1 is connected with+5V power supply, and second The other end ground connection of ten divider resistance R2；

Described filter circuit module includes 14 electric capacity, two ferrite beans, an inductance and a Schottky diode； The model of described Schottky diode is MBRA160T3G；The model of ferrite bean is HFY100505T-221Y-N；First One end of filter inductance L1 is connected with negative pole, 6 pins of the first voltage-releasing voltage stabilizer U1 of the second Schottky diode DP1；First The other end of filter inductance L1 and one end of the 47th filter capacitor C6, one end of the 48th filter capacitor C7, the 40th One end of nine filter capacitor C8, one end of the 50th filter capacitor C9, one end of the 51st filter capacitor C10, the 52nd One end of filter capacitor C11, one end of the 5th ferrite bean FB1 connect；The other end and the 5th of the 5th ferrite bean FB1 One end of 13 filter capacitor C12, one end of the 54th filter capacitor C13, one end of the 55th filter capacitor C14, One end of 56 filter capacitor C15, one end of the 6th ferrite bean FB2 connect；The other end of the 6th ferrite bean FB2 With one end of the 57th filter capacitor C16, one end of the 58th filter capacitor C17, the one of the 59th filter capacitor C18 End, one end of the 60th filter capacitor C19 connect and connect+5V out-put supply；The other end of 14 filter capacitors and second The positive pole of Schottky diode DP1 all ground connection；

The H-bridge circuit that PWM controls include H-bridge circuit that left PWM controls and filter circuit thereof, the H-bridge circuit of right PWM control and Filter circuit；

The filter circuit of the H-bridge circuit that described left PWM controls includes four electric capacity；Wherein the one of the 61st filter capacitor CP10 End, one end of the 62nd filter capacitor CP11, one end of the 63rd filter capacitor CP12, the 64th filter capacitor CP13 One end be all connected with power supply VIN end, the other end of four filter capacitors all connect shielding ground；

The H-bridge circuit module that described left PWM controls includes the connector of 2 ports, two dual pathways field effect transistor, and four lead to With triode, four Zener diodes, 16 resistance, 16 resistance include ten current-limiting resistances, four discharge resistances, two Individual load resistance；The model of described dual pathways field effect transistor is BSO615CG；The model of general triode is BC847BPDW1T1G；The 1 pin ground connection of the first general triode T1, one end of 2 pins and the first current-limiting resistance R11 connects, and 6 One end of pin and the second current-limiting resistance R12 connects, and remaining pin do not mentioned in this article is the most built on stilts；Second general triode The pin 4 of T2 is connected with power supply VIN, and pin 5 and pin 6 are connected with the two ends of the 3rd current-limiting resistance R23, pin 3 and the 4th limit One end of leakage resistance R22 connects, and pin 2 is connected with one end of the 5th current-limiting resistance R21, pin 1 ground connection；3rd general triode The pin 6 of T3 is connected with one end of the 6th current-limiting resistance R32, and pin 2 is connected with one end of the 7th current-limiting resistance R31, and pin 1 connects Ground；The pin 4 of the 4th general triode T4 is connected with input power VIN, pin 5 and pin 6 and the 8th current-limiting resistance R43 Two ends connect, and pin 3 is connected with one end of the 9th current-limiting resistance R42, and pin 2 is connected with one end of the tenth current-limiting resistance R41, pipe Foot 1 ground connection；

The pin 4 of the first dual pathways field effect transistor Q1 and one end of the first discharge resistance RD1, the one of the first Zener diode D1 End, one end of the second current-limiting resistance R12 connect, pin 2 and one end of the second discharge resistance RD2, the second Zener diode D2 One end, one end of the 4th current-limiting resistance R22, one end of the first detection resistance RL2 connect, pin 5, pin 6, pin 7, pin 8 Connect with 1 port of connector PVL；The pin 4 of the second bilateral field effect transistor Q2 and one end of the 3rd discharge resistance RD3, the 3rd One end of Zener diode D3, one end of the 6th current-limiting resistance R32 connect, pin 2 and the other end of the 4th discharge resistance RD4, The other end of the 4th Zener diode D4, one end of the 9th current-limiting resistance R42 connect, pin 5, pin 6, pin 7, pin 8 and 2 ports of connector PVL connect；The other end of the first Zener diode D1, the other end of the first discharge resistance RD1, first pair The pin 3 of pin the 3, second dual pathways field effect transistor Q2 of passage field effect transistor Q1, the other end of the 3rd discharge resistance RD3, Another termination power VIN of three Zener diode D3, the other end of the second Zener diode D2, the second discharge resistance RD2 another One end, pin the 1, the 4th discharge resistance RD4 of pin the 1, second dual pathways field effect transistor Q2 of the first dual pathways field effect transistor Q1 The other end, the other end of the second Zener diode D4, one end of the first resistance RL2 and the second detection resistance RL1 one end even Connect, the other end of the second detection resistance RL1 and another termination shielding ground of the first detection resistance RL2；

The filter circuit of the H-bridge circuit that described right PWM controls includes four electric capacity；Wherein the one of the 65th filter capacitor CP20 End, one end of the 66th filter capacitor CP21, one end of the 67th filter capacitor CP22, the 68th filter capacitor CP23 One end be all connected with power supply VIN end, the other end of four filter capacitors all connect shielding ground；

The H-bridge circuit module that described right PWM controls includes two dual pathways field effect transistor, four general triodes, four voltage stabilizings Diode, 16 resistance (ten current-limiting resistances, four discharge resistances, two load resistances)；Described dual pathways field effect The model of pipe is BSO615CG；The model of general triode is BC847BPDW1T1G；1 pin of the 5th general triode T5 connects Ground, one end of 2 pins and the 11st current-limiting resistance R51 connects, and one end of 6 pins and the 12nd current-limiting resistance R52 connects, remaining The pin do not mentioned in this article is the most built on stilts；The clematis stem pin 4 of triode T6 is connected with power supply VIN, pin 5 and pin 6 Being connected with the two ends of the 13rd current-limiting resistance R63, pin 3 is connected with one end of the 14th current-limiting resistance R62, pin 2 and the tenth One end of five current-limiting resistance R61 connects, pin 1 ground connection；Pin the 6 and the 16th current-limiting resistance R72 of the 7th general triode T7 One end connect, pin 2 is connected with one end of the 17th current-limiting resistance R71, pin 1 ground connection；The pipe of the 8th general triode T8 Foot 4 is connected with input power VIN, and pin 5 and pin 6 are connected with the two ends of the 18th current-limiting resistance R83, pin 3 and the 19th One end of current-limiting resistance R82 connects, and pin 2 is connected with one end of the 20th current-limiting resistance R81, pin 1 ground connection；

The pin 4 of the 3rd dual pathways field effect transistor Q5 and one end of the 5th discharge resistance RD5, the one of the 5th Zener diode D5 End, one end of the 12nd current-limiting resistance R52 connect, pin 2 and one end of the 6th discharge resistance RD6, the 6th Zener diode D6 One end, the 14th current-limiting resistance R62 connect, pin 5, pin 6, pin 7, pin 8 and connector PVL 1 port connect；The The pin 4 of four bilateral field effect transistor Q6 and one end of the 7th discharge resistance RD7, one end of the 7th Zener diode D7, the 16th One end of current-limiting resistance R72 connects, pin 2 and the other end of the 8th discharge resistance RD8, the 8th Zener diode D8 another End, one end of the 16th current-limiting resistance R72 connect, and 2 ports of pin 5, pin 6, pin 7, pin 8 and connector PVL connect； The other end of the 5th Zener diode D5, the other end of the 5th discharge resistance RD5, the pin 3 of the 3rd dual pathways field effect transistor Q5, The other end of pin the 3, the 7th discharge resistance RD7 of the 4th dual pathways field effect transistor Q6, the other end of the 7th Zener diode D7 Connect power supply VIN, the other end of the 6th Zener diode D6, the other end of the 6th discharge resistance RD6, the 3rd dual pathways field effect transistor The other end of pin the 1, the 8th discharge resistance RD8 of pin the 1, the 4th dual pathways field effect transistor Q6 of Q5, the 8th Zener diode One end of the other end of D8, one end of the 3rd detection resistance RL5 and the 4th resistance RL6 connects, and the 3rd detects another of resistance RL5 Another termination shielding ground of end and the 4th detection resistance RL6；

Detection signal filter circuit includes left-side signal filter circuit and right-side signal filter circuit；

Described left-side signal filter circuit includes two resistance, four electric capacity；One end and second of 21st divider resistance RL3 One end of 12 divider resistance RL4, one end of the 69th filter capacitor CL1, one end of the 70th filter capacitor CL2 connect, The other end of the 22nd divider resistance RL4 and one end of the 71st filter capacitor CL3, the 72nd filter capacitor CL4 One end connects and connects the ADC123_10 interface of CPU；The other end of the 69th filter capacitor CL1, the 70th filter capacitor CL2 The other end, the other end of the 71st filter capacitor CL3, the other end all ground connection of the 72nd filter capacitor CL4；

Described right-side signal filter circuit includes two resistance, four electric capacity；One end and the 7th of 23rd divider resistance RL7 One end of 13 filter capacitor CL5, one end of the 74th filter capacitor CL6, one end of the 24th divider resistance RL8 connect Connect, the other end of the 24th divider resistance RL8 and one end of the 75th filter capacitor CL7, the 76th filter capacitor CL8 One end connect and connect the ADC123_11 interface of CPU；The other end of the 73rd filter capacitor CL5, the 74th filter capacitor The other end of CL6, the other end of the 75th filter capacitor CL7, the other end all ground connection of the 76th filter capacitor CL8.