System circuit signal acquisition and control board

Abstract

The utility model belongs to the technical field of signal acquisition and control, and particularly relates to a system circuit signal acquisition and control board. The utility model provides a hardware foundation of a system circuit signal acquisition and control board. The device comprises a minimum system circuit, a key downloading circuit, an IO interface circuit, a communication and downloading circuit, a power supply circuit, a pull-up resistor circuit, an indicating lamp circuit and an independent key, and is characterized in that an electric energy output port of the power supply circuit is connected with an electric energy input port of the key downloading circuit; an electric energy output port of the key downloading circuit is respectively connected with a power supply port of the minimum system circuit, a power supply port of the communication and downloading circuit, a power supply port of the pull-up resistor circuit and a power supply port of the indicating lamp circuit; and a signal transmission port of the minimum system circuit is respectively connected with a signal transmission port of the IO interface circuit, a signal transmission port of the key downloading circuit, the pull-up resistor circuit, the indicating lamp circuit and the independent key.

Description

Technical Field

[0001] The utility model belongs to the technical field of signal acquisition and control, and in particular relates to a system circuit signal acquisition and control board. Background Art

[0002] Since subway drivers need to be able to effectively handle emergency failures during work, most subway drivers have only mastered driving skills and crew operations, and are not clear about the driving principles and circuit changes inside the subway. Therefore, they will explain to students through the subway train traction main circuit simulation teaching platform. The subway train traction main circuit simulation teaching platform intuitively displays the internal working principles and intuitive change results of subway driving through the operation of the subway driver's console, the state of the pantograph on the traction electrical main circuit, the state change of the main circuit breaker, the rotation change of the traction motor, and the circuit change represented by the light strip. This ensures that the subway driver understands both the operation and the principle. In this way, when a sudden failure of the vehicle occurs, the driver can find the cause and location of the failure as soon as possible to prepare for effective processing, thereby ensuring the safe operation of the train and the safety of passengers. At the same time, the light strip is controlled by a relay, so that the light strip display is associated with the action of the train electrical circuit, demonstrating the effects of train lifting and lowering the pantograph, closing and disconnecting the high-speed circuit breaker, train traction braking, and train forward and backward. In order to achieve the above demonstration function, it is necessary to design a system circuit signal acquisition and control board to collect data instructions issued by the subway driver's driving console and control the light strip according to the data instructions. Summary of the invention

[0003] The utility model aims at the above problems and provides a hardware basis for system circuit signal acquisition and control board.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme, which includes a minimum system circuit, a key download circuit, an IO interface circuit, a communication and download circuit, a power supply circuit, a pull-up resistor circuit, an indicator light circuit and an independent key, and is characterized in that the power output port of the power supply circuit is connected to the power input port of the key download circuit, the power output port of the key download circuit is respectively connected to the power port of the minimum system circuit, the power port of the communication and download circuit, the power port of the pull-up resistor circuit, and the power port of the indicator light circuit, and the signal transmission port of the minimum system circuit is respectively connected to the signal transmission port of the IO interface circuit, the signal transmission port of the key download circuit, the pull-up resistor circuit, the indicator light circuit and the independent key.

[0005] As a preferred solution, the minimum system circuit of the utility model adopts an 8051 chip U1, and pins 1 to 19 of U1 are respectively connected to P10 to P17, RST, P30 to P37, X2, and X1; pin 20 of U1 is respectively connected to ground, one end of capacitor C1, and one end of capacitor C2; the other end of C1 is respectively connected to X1 and one end of crystal oscillator Y1; the other end of Y1 is respectively connected to X2 and the other end of C2; pins 21 to 30 of U1 are respectively connected to P20 to P27, PSEN, and ALE; pins 31 and 40 of U1 are connected to VCC; pins 32 to 39 of U1 are respectively connected to P07 to P00; VCC is respectively connected to one end of switch K1 and the positive electrode of capacitor C3; the other end of K1 is respectively connected to the negative electrode of C3, one end of resistor R28, and RST; and the other end of R28 is grounded.

[0006] As another preferred solution, the button download circuit of the utility model includes an 8550 transistor Q2, the emitter of Q2 is respectively connected to 5V and one end of the download button S3, the other end of S3 is respectively connected to one end of a resistor R27 and a base of Q2, and the other end of R27 is grounded; the collector of Q2 is respectively connected to VCC and one end of a resistor R25, and the other end of R25 is grounded through a download indicator light.

[0007] As another preferred solution, the IO interface circuit of the utility model includes 4P interfaces P1-P8 and 8P interfaces P11-P14, the 4-1 pins of P1 are respectively connected to P10-P13, the 4-1 pins of P2 are respectively connected to P14-P17, the 4-1 pins of P3 are respectively connected to P00-P03, the 4-1 pins of P4 are respectively connected to P04-P07, the 4-1 pins of P5 are respectively connected to P20-P23, the 4-1 pins of P6 are respectively connected to P24-P27, the 4-1 pins of P7 are respectively connected to P30-P33, and the 4-1 pins of P8 are respectively connected to P34-P37;

[0008] Pins 1 to 8 of P11 are connected to P00 to P07 respectively, pins 1 to 8 of P12 are connected to P10 to P17 respectively, pins 1 to 8 of P13 are connected to P20 to P27 respectively, and pins 1 to 8 of P14 are connected to P30 to P37 respectively.

[0009] As another preferred solution, the communication and downloading circuit of the utility model includes a MAX232 chip U2, pin 1 of U2 is connected to pin 3 of U2 through capacitor C10, pin 4 of U2 is connected to pin 5 of U2 through capacitor C6, and pin 6 of U2 is grounded through capacitor C7; pins 11 to 14 of U2 are respectively connected to P31, P30, 232RXD, and 232TXD, pin 15 of U2 is grounded, pin 16 of U2 is respectively connected to one end of capacitor C8, VCC, and one end of capacitor C9, the other end of C9 is grounded, and the other end of C8 is connected to pin 2 of U2;

[0010] Pins 10 and 11 of the serial port J1 are grounded, pin 5 of J1 is grounded, and pins 2 and 3 of J1 are connected to 232TXD and 232RXD respectively;

[0011] Pins 1 to 4 of the downloader interface P10 are connected to VCC, P30, P31, and ground respectively, and VCC is grounded through capacitor C11;

[0012] Pins 1 to 4 of JP1 of the HC-06 module are connected to VCC, P30, P31 and ground respectively.

[0013] As another preferred solution, the power supply circuit Header3H interface P9 of the utility model, pin 1 of P9 is respectively connected to the positive electrode of capacitor C4, one end of capacitor C5, anode of light-emitting diode D1, and 5V through key2, the negative electrode of C4 is respectively connected to pin 2 of P9, pin 3 of P9, the other end of C5, one end of resistor R6, and ground, and the other end of R6 is connected to the cathode of D1.

[0014] As another preferred solution, the pull-up resistor circuit of the utility model adopts RES9 pull-up resistor R3, and the 1st to 9th pins of R3 are respectively connected to P07 to P00 and VCC.

[0015] Secondly, the indicator light circuit of the utility model includes light-emitting diodes D2~D5, the anodes of D2~D5 are connected to VCC, the cathode of D2 is connected to P10 through resistor R7, the cathode of D3 is connected to P11 through resistor R8, the cathode of D4 is connected to P12 through resistor R9, and the cathode of D5 is connected to P13 through resistor R10.

[0016] In addition, the independent keys of the present invention include independent keys K2 to K5, one end of K2 to K5 is grounded, and the other end of K2 to K5 is connected to P20 to P23 respectively.

[0017] The utility model has beneficial effects.

[0018] The minimum system circuit of the utility model reads the data instructions issued by the subway driver's driving console on site through the IO interface circuit. The minimum system circuit controls the electrical dynamic demonstration display board light strip control relay of the subway train traction main circuit simulation teaching platform through the IO interface circuit, realizes the entire working principle of the simulated electrical traction system, and is convenient for students to clearly grasp the logic and principle of the state change of the electrical system behind subway driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the utility model is not limited to the following descriptions.

[0020] Figure 1It is the minimum system circuit schematic diagram of the utility model.

[0021] Figure 2 The utility model is a schematic diagram of a key download circuit.

[0022] Figure 3 This is a schematic diagram of the IO interface circuit of the utility model.

[0023] Figure 4 This is a schematic diagram of the communication and downloading circuit of the utility model.

[0024] Figure 5 This is a schematic diagram of a power supply circuit of the utility model.

[0025] Figure 6 The utility model is a schematic diagram of a pull-up resistor circuit.

[0026] Figure 7 This is a schematic diagram of the indicator light circuit of the utility model.

[0027] Figure 8 This is a schematic diagram of an independent key circuit of the utility model. DETAILED DESCRIPTION

[0028] As shown in the figure, the utility model includes a minimum system circuit, a key download circuit, an IO interface circuit, a communication and download circuit, a power supply circuit, a pull-up resistor circuit, an indicator light circuit and an independent key. The power output port of the power supply circuit is connected to the power input port of the key download circuit, and the power output port of the key download circuit is respectively connected to the power port of the minimum system circuit, the power port of the communication and download circuit, the power port of the pull-up resistor circuit, and the power port of the indicator light circuit. The signal transmission port of the minimum system circuit is respectively connected to the signal transmission port of the IO interface circuit, the signal transmission port of the key download circuit, the pull-up resistor circuit, the indicator light circuit and the independent key.

[0029] The minimum system circuit adopts the 8051 chip U1, and pins 1 to 19 of U1 are respectively connected to P10 to P17, RST, P30 to P37, X2, and X1; pin 20 of U1 is respectively connected to ground, one end of capacitor C1, and one end of capacitor C2; the other end of C1 is respectively connected to X1 and one end of crystal oscillator Y1; the other end of Y1 is respectively connected to X2 and the other end of C2; pins 21 to 30 of U1 are respectively connected to P20 to P27, PSEN, and ALE; pins 31 and 40 of U1 are connected to VCC; pins 32 to 39 of U1 are respectively connected to P07 to P00; VCC is respectively connected to one end of switch K1 and the positive electrode of capacitor C3; the other end of K1 is respectively connected to the negative electrode of C3, one end of resistor R28, and RST; the other end of R28 is grounded.

[0030] The button download circuit includes an 8550 transistor Q2, the emitter of Q2 is connected to 5V and one end of the download button S3 respectively, the other end of S3 is connected to one end of a resistor R27 and a base of Q2 respectively, and the other end of R27 is grounded; the collector of Q2 is connected to VCC and one end of a resistor R25 respectively, and the other end of R25 is grounded through a download indicator light.

[0031] The working process of the key download circuit is as follows: when the download button is not pressed, the 8550 transistor Q2 is turned on, the microcontroller power supply VCC is 5v, and the microcontroller is in the power-on state. When the download button S3 is pressed, the 8550 transistor Q2 is turned off, and the microcontroller power supply VCC is 0v. In this way, the process of powering off and powering on the microcontroller is easily realized by pressing and lifting the button, and the cold start download program process of the microcontroller is realized.

[0032] The IO interface circuit includes 4P interfaces P1-P8 and 8P interfaces P11-P14, wherein pins 4-1 of P1 are respectively connected to P10-P13, pins 4-1 of P2 are respectively connected to P14-P17, pins 4-1 of P3 are respectively connected to P00-P03, pins 4-1 of P4 are respectively connected to P04-P07, pins 4-1 of P5 are respectively connected to P20-P23, pins 4-1 of P6 are respectively connected to P24-P27, pins 4-1 of P7 are respectively connected to P30-P33, and pins 4-1 of P8 are respectively connected to P34-P37;

[0033] Pins 1 to 8 of P11 are connected to P00 to P07 respectively, pins 1 to 8 of P12 are connected to P10 to P17 respectively, pins 1 to 8 of P13 are connected to P20 to P27 respectively, and pins 1 to 8 of P14 are connected to P30 to P37 respectively.

[0034] The utility model system circuit signal acquisition and control board can be applied to the subway train traction main circuit simulation teaching platform. In order to facilitate the IO port of the single-chip microcomputer of the minimum system circuit to collect external signals and control the circuit, the IO port of the single-chip microcomputer is led out through the wiring terminal (4P interface and 8P interface) in the circuit. The input port of the control board is connected to the subway driver's driving console, and the output port is connected to the electrical dynamic demonstration display board light belt control relay of the subway train traction main circuit simulation teaching platform.

[0035] The specific IO port allocation scheme is shown in the following table:

[0036] Serial number Input / Output IO Port Function 1 Input P00 Electric key closing detection 2 Input P01 Battery closure detection 3 Input P02 Pantograph lifting detection 4 Input P03 Pantograph drop detection 5 Input P04 Forward position detection 6 Input port P05 0 bit detection 7 Input P06 Backward position detection 8 Input P07 SIV start detection 9 Input P10 Emergency brake detection 10 Input P11 Service brake test 11 Input P12 Electric key detection 12 Input P13 Main circuit breaker detection 13 Input P14 Door closing detection 14 Input P15 Door closed detection 15 Input P16 Door opening detection 16 Output P17 Traction inverter activation detection 17 Output P20 Train activated indicator light strip 18 Output P21 Pantograph indicator light strip 19 Output P22 Forward indicator light strip 20 Output P23 Rear indicator light strip 21 Output P24 Auxiliary inverter indicator light strip 22 Output P25 Emergency brake indication 23 Output P26 Yellow light reminds you when the door is opening or closing 24 Output P27 Red light reminder during door opening and closing process 25 Output P30 Serial communication port receiving 26 Output P31 Serial communication port sends 27 Output P32 The door is closed and the car can start. The green light indicates that the car can start. 28 Output P33 Door not closed, no departure, red light 29 Output P34 Sound and light warning lights 30 Output P35 Speeding Indicator 31 Output P36 Vehicle motion indicator light strip 32 Output P37 spare

[0037] The communication and downloading circuit includes a MAX232 chip U2, wherein the pin 1 of U2 is connected to the pin 3 of U2 through a capacitor C10, the pin 4 of U2 is connected to the pin 5 of U2 through a capacitor C6, and the pin 6 of U2 is grounded through a capacitor C7; the pins 11 to 14 of U2 are respectively connected to P31, P30, 232RXD, and 232TXD, the pin 15 of U2 is grounded, the pin 16 of U2 is respectively connected to one end of a capacitor C8, VCC, and one end of a capacitor C9, the other end of C9 is grounded, and the other end of C8 is connected to the pin 2 of U2;

[0038] Pins 10 and 11 of the serial port J1 are grounded, pin 5 of J1 is grounded, and pins 2 and 3 of J1 are connected to 232TXD and 232RXD respectively;

[0039] Pins 1 to 4 of the downloader interface P10 are connected to VCC, P30, P31, and ground respectively, and VCC is grounded through capacitor C11;

[0040] Pins 1 to 4 of JP1 of the HC-06 module are connected to VCC, P30, P31 and ground respectively.

[0041] The communication circuit uses a combination of Bluetooth transparent communication (i.e. HC-06 module JP1) and 232 communication (i.e. MAX232 chip U2). The purpose of Bluetooth transparent communication is to transmit the driving status and circuit change status to the mobile phone and computer. The control board can also receive the control instructions of the mobile phone to control the dynamic demonstration display board, ensuring that students can view data and control the dynamic demonstration display board anytime and anywhere.

[0042] The power supply circuit Header3H interface P9, pin 1 of P9 is connected to the positive electrode of capacitor C4, one end of capacitor C5, the anode of light-emitting diode D1, and 5V respectively through key 2, the negative electrode of C4 is connected to pin 2 of P9, pin 3 of P9, the other end of C5, one end of resistor R6, and ground respectively, and the other end of R6 is connected to the cathode of D1.

[0043] The P9 interface is connected to a DC5v regulated power supply.

[0044] VCC is DC5V connected to the collector of 8550 transistor Q2. If the download button S3 is not pressed, VCC is 5V.

[0045] Key2 is the power switch. When Key2 is pressed, the circuit is powered on, the circuit can maintain normal operation, and the microcontroller executes the program.

[0046] The pull-up resistor circuit adopts RES9 to pull up resistor R3, and the 1st to 9th pins of R3 are respectively connected to P07 to P00 and VCC.

[0047] The indicator light circuit includes light emitting diodes D2-D5, wherein the anodes of D2-D5 are connected to VCC, the cathode of D2 is connected to P10 through a resistor R7, the cathode of D3 is connected to P11 through a resistor R8, the cathode of D4 is connected to P12 through a resistor R9, and the cathode of D5 is connected to P13 through a resistor R10.

[0048] The independent keys include independent keys K2-K5, one end of K2-K5 is grounded, and the other end of K2-K5 is connected to P20-P23 respectively.

[0049] During the initial debugging of the circuit board, independent buttons are used to simulate the buttons on the driver's console, and indicator light circuits are used to simulate the circuit changes of the platform. When a button is pressed, according to the system settings, the LED is lit to indicate that the corresponding light is powered on or the switch is closed, so that it is easy to judge whether the system settings are correct or not, which is convenient for the debugging of the large system in the later stage. The lower computer detects whether the button is pressed, and then needs to give a judgment result on whether it can be powered according to the logic and interlocking mechanism. If it can be powered, the corresponding relay will be triggered to be powered, and if it cannot be powered, there will be no response.

[0050] The single-chip microcomputer of the minimum system circuit of the utility model receives instructions from the driving control console or the host computer, and can be set according to the real driving logic of subway driving, and the power-on state and switch state of the circuit are reflected by the on and off of the light strip of the electrical dynamic demonstration display board, so that the trainees can clearly grasp the logic and principle of the state change of the electrical system behind driving.

[0051] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the embodiments of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.

Claims

1. System circuit signal acquisition and control board, including minimum system circuit, key download circuit, IO interface circuit, communication and download circuit, power supply circuit, pull-up resistor circuit, indicator light circuit and independent key, characterized in that The power output port of the power supply circuit is connected to the power input port of the key download circuit, and the power output port of the key download circuit is respectively connected to the power port of the minimum system circuit, the power port of the communication and download circuit, the power port of the pull-up resistor circuit, and the power port of the indicator light circuit, and the signal transmission port of the minimum system circuit is respectively connected to the signal transmission port of the IO interface circuit, the signal transmission port of the key download circuit, the pull-up resistor circuit, the indicator light circuit, and the independent key.

2. According to claim 1, the system circuit signal acquisition and control board is characterized in that The minimum system circuit adopts the 8051 chip U1, and pins 1 to 19 of U1 are respectively connected to P10 to P17, RST, P30 to P37, X2, and X1; pin 20 of U1 is respectively connected to ground, one end of capacitor C1, and one end of capacitor C2; the other end of C1 is respectively connected to X1 and one end of crystal oscillator Y1; the other end of Y1 is respectively connected to X2 and the other end of C2; pins 21 to 30 of U1 are respectively connected to P20 to P27, PSEN, and ALE; pins 31 and 40 of U1 are connected to VCC; pins 32 to 39 of U1 are respectively connected to P07 to P00; VCC is respectively connected to one end of switch K1 and the positive electrode of capacitor C3; the other end of K1 is respectively connected to the negative electrode of C3, one end of resistor R28, and RST; the other end of R28 is grounded.

3. According to claim 1, the system circuit signal acquisition and control board is characterized in that The button download circuit includes an 8550 transistor Q2, the emitter of Q2 is connected to 5V and one end of the download button S3 respectively, the other end of S3 is connected to one end of a resistor R27 and a base of Q2 respectively, and the other end of R27 is grounded; the collector of Q2 is connected to VCC and one end of a resistor R25 respectively, and the other end of R25 is grounded through a download indicator light.

4. According to claim 1, the system circuit signal acquisition and control board is characterized in that The IO interface circuit includes 4P interfaces P1-P8 and 8P interfaces P11-P14. Pins 4-1 of P1 are respectively connected to P10-P13, pins 4-1 of P2 are respectively connected to P14-P17, pins 4-1 of P3 are respectively connected to P00-P03, pins 4-1 of P4 are respectively connected to P04-P07, pins 4-1 of P5 are respectively connected to P20-P23, and pins 4-1 of P6 are respectively connected to P00-P03. Pins 1 to 8 of P11 are connected to P00 to P07 respectively, pins 1 to 8 of P12 are connected to P10 to P17 respectively, pins 1 to 8 of P13 are connected to P20 to P27 respectively, and pins 1 to 8 of P14 are connected to P30 to P37 respectively.

5. According to claim 1, the system circuit signal acquisition and control board is characterized in that The communication and downloading circuit includes a MAX232 chip U2, wherein the pin 1 of U2 is connected to the pin 3 of U2 through a capacitor C10, the pin 4 of U2 is connected to the pin 5 of U2 through a capacitor C6, and the pin 6 of U2 is grounded through a capacitor C7; the pins 11 to 14 of U2 are respectively connected to P31, P30, 232RXD, and 232TXD, the pin 15 of U2 is grounded, the pin 16 of U2 is respectively connected to one end of a capacitor C8, VCC, and one end of a capacitor C9, the other end of C9 is grounded, and the other end of C8 is connected to the pin 2 of U2; Pins 10 and 11 of the serial port J1 are grounded, pin 5 of J1 is grounded, and pins 2 and 3 of J1 are connected to 232TXD and 232RXD respectively; Pins 1 to 4 of the downloader interface P10 are connected to VCC, P30, P31, and ground respectively, and VCC is grounded through capacitor C11; Pins 1 to 4 of JP1 of the HC-06 module are connected to VCC, P30, P31 and ground respectively.

6. The system circuit signal acquisition and control board according to claim 1, characterized in that The power supply circuit Header3H interface P9, pin 1 of P9 is connected to the positive electrode of capacitor C4, one end of capacitor C5, the anode of light-emitting diode D1, and 5V respectively through key 2, the negative electrode of C4 is connected to pin 2 of P9, pin 3 of P9, the other end of C5, one end of resistor R6, and ground respectively, and the other end of R6 is connected to the cathode of D1.

7. The system circuit signal acquisition and control board according to claim 1, characterized in that The pull-up resistor circuit adopts RES9 to pull up resistor R3, and the 1st to 9th pins of R3 are respectively connected to P07 to P00 and VCC.

8. The system circuit signal acquisition and control board according to claim 1, characterized in that The indicator light circuit includes light emitting diodes D2-D5, wherein the anodes of D2-D5 are connected to VCC, the cathode of D2 is connected to P10 through a resistor R7, the cathode of D3 is connected to P11 through a resistor R8, the cathode of D4 is connected to P12 through a resistor R9, and the cathode of D5 is connected to P13 through a resistor R10.

9. The system circuit signal acquisition and control board according to claim 1, characterized in that The independent keys include independent keys K2-K5, one end of K2-K5 is grounded, and the other end of K2-K5 is connected to P20-P23 respectively.

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