Performance ground detection device for diesel generating set of passenger train

Abstract

The utility model discloses a railway carriage diesel generating set performance ground detection device, comprising a master control module, an operation parameter acquisition module, a driving module and a power supply module, the master control module is electrically connected with the operation parameter acquisition module and the driving module respectively; the power supply module is electrically connected with the main control module, the operating parameter acquisition module and the driving module, the operating parameter acquisition module is used for directly acquiring operating parameters of the diesel generating set, the main control module issues a control instruction according to the operating parameters, and the driving module drives the diesel generating set according to the control instruction. The device is directly connected with the sensor in the diesel generating set, the operation parameters of the diesel generating set are directly collected, the situation that the parameters are not consistent in loading after operation testing is avoided, additional sensors do not need to be additionally arranged, and the operation parameters of the diesel generating set are more conveniently collected.

Description

Technical Field

[0001] The utility model relates to the technical field of railway passenger car generator performance detection, in particular to a railway passenger car diesel generator set performance ground detection device. Background Art

[0002] High-power diesel generator sets need to undergo ground tests during D-level repairs. Currently, there are no supporting facilities consistent with the existing vehicles for operational testing. The existing test equipment collects data by adding sensors and using home-installed sensors to collect parameters of the diesel generator set. The data is not collected and analyzed through the diesel engine's own sensors, resulting in parameter mismatches after the operational test. The performance of the diesel engine assembly vehicle test cannot be guaranteed. At the same time, the new regulations have also changed the ground performance test standards for diesel engines, and the collected parameters need to be reprocessed, which requires replacing new sensors again. When installing sensors, some positions need to be disassembled to install sensors, which will have certain quality risks for the entire diesel generator set. Utility Model Content

[0003] The purpose of the utility model is to provide a ground detection device for the performance of diesel generator sets on railway passenger cars in response to the above-mentioned problems. The device can be directly connected to the sensors in the diesel generator sets to directly collect the operating parameters of the diesel generator sets, thereby avoiding the situation where the parameters do not match when the train is loaded after the operation test. There is no need to install additional sensors, which makes it more convenient to collect the operating parameters of the diesel generator sets.

[0004] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0005] According to one aspect of the present invention, a ground detection device for the performance of a railway passenger car diesel generator set is provided, comprising a main control module, an operating parameter acquisition module, a drive module and a power supply module;

[0006] The main control module is electrically connected to the operating parameter acquisition module and the driving module respectively;

[0007] The power supply module is electrically connected to the main control module, the operating parameter acquisition module and the driving module respectively;

[0008] The operating parameter acquisition module is used to directly acquire the operating parameters of the diesel generator set; the main control module issues control instructions according to the operating parameters; and the drive module drives the diesel generator set according to the control instructions.

[0009] Preferably, the main control module includes a main control chip, an ISP interface and a crystal oscillator, and the ISP interface and the crystal oscillator are electrically connected to the main control chip respectively.

[0010] Preferably, the operating parameter acquisition module includes an oil pressure data acquisition unit, an oil temperature data acquisition unit, a water temperature data acquisition unit and a speed data acquisition unit;

[0011] The oil pressure data acquisition unit includes a first dual operational amplifier and an oil pressure acquisition terminal, wherein the first dual operational amplifier is electrically connected to the main control chip, and the oil pressure acquisition terminal is electrically connected to the first dual operational amplifier;

[0012] The oil temperature data acquisition unit includes a second dual operational amplifier and an oil temperature acquisition terminal, the second dual operational amplifier is electrically connected to the main control chip, and the oil temperature acquisition terminal is electrically connected to the second dual operational amplifier;

[0013] The water temperature data acquisition unit includes a third dual operational amplifier and a water temperature acquisition terminal, the third dual operational amplifier is electrically connected to the main control chip, and the water temperature acquisition terminal is electrically connected to the third dual operational amplifier;

[0014] The speed data acquisition unit includes a fourth dual operational amplifier and a speed acquisition terminal. The fourth dual operational amplifier is electrically connected to the main control chip, and the speed acquisition terminal is electrically connected to the first dual operational amplifier.

[0015] Preferably, the driving module includes a bus transceiver, a first driving chip, a second driving chip and a driving connection terminal, the first driving chip and the second driving chip are electrically connected to the main control chip through an optical coupler, and the driving connection terminal is electrically connected to the first driving chip and the second driving chip.

[0016] Preferably, the power supply module includes a main power supply unit and an isolated power supply unit, the main power supply unit is electrically connected to the isolated power supply unit, the main power supply unit is used to generate 5V and 12V DC voltages, and the isolated power supply unit is used to generate 15V DC voltage.

[0017] Preferably, the main power supply unit includes a power connection terminal, a diode D1, a diode D2 and a step-down chip, the power connection terminal is electrically connected to the step-down chip through the diode D1, the anode of the diode D1 is electrically connected to the power connection terminal, the cathode of the diode D1 is electrically connected to the step-down chip, the anode of the diode D2 is electrically connected to the power connection terminal, and the cathode of the diode D2 is grounded through the capacitor C2.

[0018] Preferably, the isolated power supply unit includes an isolated power supply chip, and the input end of the isolated power supply chip is electrically connected to the cathode of the diode D2.

[0019] Preferably, it further includes a communication test module, which includes an RS232 communication chip and an RS232 connection terminal. The RS232 communication chip is electrically connected to the main control chip, and the RS232 connection terminal is electrically connected to the RS232 communication chip.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] The utility model directly connects the operating parameter acquisition module to the sensor in the diesel generator set, and uses the operating parameter acquisition module to directly acquire the operating parameters of the diesel generator set, thereby avoiding the situation where the parameters do not match after the operation test and the vehicle is loaded, and there is no need to install additional sensors, which makes it more convenient to acquire the operating parameters of the diesel generator set. At the same time, the main control module is used to control the operating parameter acquisition module to automatically acquire the operating parameters, and the drive module is used to automatically control the control system of the diesel generator set, thereby realizing automatic acquisition and control. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a circuit schematic diagram of the main control module of the utility model;

[0024] Figure 3 This is a circuit diagram of the oil pressure data acquisition unit of the utility model;

[0025] Figure 4 This is a circuit diagram of the oil temperature data acquisition unit of the utility model;

[0026] Figure 5 This is a circuit diagram of the water temperature data acquisition unit of the utility model;

[0027] Figure 6 This is a circuit diagram of the speed data acquisition unit of the utility model;

[0028] Figure 7 This is a circuit schematic diagram of the drive module of the utility model;

[0029] Figure 8 This is a circuit diagram of the main power supply unit of the utility model;

[0030] Figure 9 This is a circuit schematic diagram of the isolated power supply unit of the utility model. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in this specification are merely provided to help the reader gain a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0032] See also Figures 1 to 9 The utility model provides a ground detection device for the performance of a railway passenger car diesel generator set. The technical solution is as follows:

[0033] like Figure 1 As shown, a ground-based performance monitoring device for a railway passenger car diesel generator set includes a main control module, an operating parameter acquisition module, a drive module, and a power supply module. The main control module is electrically connected to the operating parameter acquisition module and the drive module, respectively. The power supply module is electrically connected to the main control module, the operating parameter acquisition module, and the drive module, respectively. The operating parameter acquisition module directly acquires the operating parameters of the diesel generator set; the main control module issues control instructions based on the operating parameters; and the drive module drives the diesel generator set according to these control instructions.

[0034] Specifically, such as Figure 2 As shown, the main control module includes a main control chip, an ISP interface, and a crystal oscillator. The main control chip is an ATmega64 with a total of 64 pins. The main control chip is electrically connected to the ISP interface. The ISP interface is a 10PH-AVR, which is used to program the main control chip. Pin 2 (RXD pin) of the main control chip is connected to pin 1 (MOSI pin) of the ISP interface, pin 3 (TXD pin) of the main control chip is connected to pin 9 (MISO pin) of the ISP interface, pin 11 (SCK pin) of the main control chip is connected to pin 7 (SCK pin) of the ISP interface, and pin 20 (RESET pin) of the main control chip is connected to pin 5 (RST pin) of the ISP interface. The main control chip is electrically connected to the crystal oscillator. Pin 23 (XTAL2 pin) and pin 24 (XTAL1 pin) of the main control chip are electrically connected to the two ends of the crystal oscillator, respectively. One end of the crystal oscillator is grounded through capacitor C13, and the other end is grounded through capacitor C14. The crystal oscillator provides a stable clock signal to ensure stable operation of the system.

[0035] The operating parameter acquisition module includes an oil pressure data acquisition unit, an oil temperature data acquisition unit, a water temperature data acquisition unit, and a speed data acquisition unit. The oil pressure data acquisition unit is used to collect the oil pressure parameters of the diesel generator set; the oil temperature data acquisition unit is used to collect the oil temperature parameters of the diesel generator set; the water temperature data acquisition unit is used to collect the water temperature parameters of the diesel generator set; and the speed data acquisition unit is used to collect the motor speed parameters of the diesel generator set.

[0036] Specifically, such as Figure 3 As shown, the oil pressure data acquisition unit includes a first dual operational amplifier and an oil pressure acquisition terminal. The first dual operational amplifier is an LM358-1 and has eight pins. Pins 2 and 3 of the first dual operational amplifier serve as the first inverting input pin and the first non-inverting input pin, respectively. Pins 2 and 3 of the first dual operational amplifier are electrically connected to the oil pressure acquisition terminal. The oil pressure acquisition terminal is connected to the diesel generator set's built-in oil pressure monitoring sensor in the fuel tank. The oil pressure acquisition terminal has two pins. Pin 1 of the oil pressure acquisition terminal is electrically connected to pin 3 of the first dual operational amplifier via resistor R14. Pin 1 of the oil pressure acquisition terminal is grounded via capacitor C20. Pin 2 of the oil pressure acquisition terminal is grounded and electrically connected to pin 2 of the first dual operational amplifier via resistor R15. Pin 1 of the first dual operational amplifier serves as the first output pin. Pin 1 of the first dual operational amplifier is electrically connected to pin 5 of the first dual operational amplifier, which serves as the second non-inverting input pin. Pin 5 of the first dual operational amplifier is electrically connected to pin 2 of the first dual operational amplifier via resistor R16. Pins 6 and 7 of the first dual operational amplifier are the second inverting input pin and the second output pin, respectively. Pins 6 and 7 of the first dual operational amplifier are electrically connected. Pin 7 of the first dual operational amplifier is electrically connected to pin 61 of the main control chip via resistor R17. Pin 8 of the first dual operational amplifier is a voltage input pin. The oil pressure parameter signal from the diesel generator set's fuel tank is collected via the oil pressure acquisition terminal. The oil pressure parameter signal is amplified by the first dual operational amplifier and transmitted to the main control chip, which receives and identifies the oil pressure value in the diesel generator set's fuel tank.

[0037] like Figure 4As shown, the oil temperature data acquisition unit includes a second dual operational amplifier and an oil temperature acquisition terminal. The second dual operational amplifier is an LM358-2 and has eight pins. Pins 2 and 3 of the second dual operational amplifier serve as the first inverting input pin and the first non-inverting input pin, respectively. Pins 2 and 3 of the second dual operational amplifier are electrically connected to the oil temperature acquisition terminal. The oil temperature acquisition terminal is connected to the diesel generator set's built-in oil temperature monitoring sensor in the fuel tank. The oil temperature acquisition terminal has two pins. Pin 1 of the oil temperature acquisition terminal is electrically connected to pin 3 of the second dual operational amplifier via resistor R18. Pin 1 of the oil temperature acquisition terminal is grounded via capacitor C23. Pin 2 of the oil temperature acquisition terminal is grounded and electrically connected to pin 2 of the second dual operational amplifier via resistor R19. Pin 1 of the second dual operational amplifier serves as the first output pin. Pin 1 of the second dual operational amplifier is electrically connected to pin 5 of the second dual operational amplifier, which serves as the second non-inverting input pin. Pin 5 of the second dual operational amplifier is electrically connected to pin 2 of the second dual operational amplifier via resistor R20. Pins 6 and 7 of the second dual operational amplifier are the second inverting input pin and the second output pin, respectively. Pins 6 and 7 of the second dual operational amplifier are electrically connected. Pin 7 of the second dual operational amplifier is electrically connected to pin 60 of the main control chip via resistor R21. Pin 8 of the second dual operational amplifier is a voltage input pin. The oil temperature parameter signal from the diesel generator set's fuel tank is collected via the oil temperature acquisition terminal. The oil temperature parameter signal is amplified by the second dual operational amplifier and transmitted to the main control chip, which receives and identifies the fuel temperature value of the diesel generator set's fuel tank.

[0038] like Figure 5As shown, the water temperature data acquisition unit includes a third dual operational amplifier and a water temperature acquisition terminal. The third dual operational amplifier is an LM358-3 and has eight pins. Pins 2 and 3 of the third dual operational amplifier serve as the first inverting input pin and the first non-inverting input pin, respectively. Pins 2 and 3 of the third dual operational amplifier are electrically connected to the water temperature acquisition terminal. The water temperature acquisition terminal is connected to the internal temperature sensor of the diesel generator set's cooling water tank. The water temperature acquisition terminal has two pins. Pin 1 of the water temperature acquisition terminal is electrically connected to pin 3 of the third dual operational amplifier via resistor R22. Pin 1 of the water temperature acquisition terminal is grounded via capacitor C26. Pin 2 of the water temperature acquisition terminal is grounded and electrically connected to pin 2 of the third dual operational amplifier via resistor R23. Pin 1 of the third dual operational amplifier serves as the first output pin. Pin 1 of the third dual operational amplifier is electrically connected to pin 5 of the third dual operational amplifier, which serves as the second non-inverting input pin. Pin 5 of the third dual operational amplifier is electrically connected to pin 2 of the third dual operational amplifier via resistor R24. Pins 6 and 7 of the third dual operational amplifier are the second inverting input pin and the second output pin, respectively. Pins 6 and 7 of the third dual operational amplifier are electrically connected. Pin 7 of the third dual operational amplifier is electrically connected to pin 59 of the main control chip via resistor R25. Pin 8 of the third dual operational amplifier is a voltage input pin. The water temperature parameter signal of the diesel generator set's cooling water tank is collected via the water temperature acquisition terminal. The water temperature parameter signal is amplified by the third dual operational amplifier and transmitted to the main control chip, which receives and identifies the water temperature value of the diesel generator set's cooling water tank.

[0039] like Figure 6As shown, the speed data acquisition unit includes a fourth dual operational amplifier and a speed acquisition terminal. The fourth dual operational amplifier is an LM358-4 and has eight pins. Pins 2 and 3 of the fourth dual operational amplifier serve as the first inverting input pin and the first non-inverting input pin, respectively. Pins 2 and 3 of the fourth dual operational amplifier are electrically connected to the speed acquisition terminal. The speed acquisition terminal is connected to the speed monitor of the diesel generator set's motor. The speed acquisition terminal has two pins. Pin 1 of the speed acquisition terminal is electrically connected to pin 3 of the fourth dual operational amplifier via resistors R30 and R26 connected in series. The node connecting resistors R30 and R26 is connected to ground via capacitor C29 and also to ground via resistor R31. Pin 2 of the speed acquisition terminal is grounded and electrically connected to pin 2 of the fourth dual operational amplifier via resistor R27. Pin 1 of the fourth dual operational amplifier serves as the first output pin. Pin 1 of the fourth dual operational amplifier is electrically connected to pin 5 of the fourth dual operational amplifier. Pin 5 of the fourth dual operational amplifier is a second non-inverting input pin and is electrically connected to pin 2 of the fourth dual operational amplifier via resistor R28. Pin 6 of the fourth dual operational amplifier is a second inverting input pin and is grounded via resistor R32. Pin 7 of the fourth dual operational amplifier is a second output pin and is electrically connected to pin 26 of the main control chip via resistor R29. Pin 8 of the fourth dual operational amplifier is a voltage input pin. The speed parameter signal of the diesel generator set's motor is collected via the speed acquisition terminal, amplified by the fourth dual operational amplifier, and transmitted to the main control chip, which receives and identifies the speed value of the diesel generator set's motor.

[0040] like Figure 7As shown, the driving module includes a bus transceiver, a first driving chip, a second driving chip and a driving connection terminal. The model of the bus transceiver is HC245. The bus transceiver has a total of 20 pins. Pins 1 and 20 of the bus transceiver are voltage input pins. Pins 2-9 of the bus transceiver are A input and output pins, and pins 2-9 of the bus transceiver are respectively connected to pins 35-42 of the main control chip. Pins 15-18 of the bus transceiver are B input and output pins. Pin 18 of the bus transceiver is connected to the optocoupler OP1 through the resistor R4. The optocoupler OP1 has 4 pins. Pin 1 of the optocoupler OP1 is electrically connected to the resistor R4, pin 2 of the optocoupler OP1 is grounded, pin 3 of the optocoupler OP1 is a voltage input pin, and pin 4 of the optocoupler OP1 is electrically connected to the first driving chip. The first driver chip is model BTS723-1 and has a total of 14 pins. Pin 2 of the first driver chip is a first input pin and is electrically connected to pin 4 of the optocoupler OP1. Pin 4 of the optocoupler OP1 is grounded via resistor R5. Pin 3 of the first driver chip is a control signal pin and is connected to a light-emitting diode LED1. The anode of LED1 is electrically connected to the first driver chip, and the cathode of LED1 is grounded.

[0041] Pin 17 of the bus transceiver is connected to an optocoupler OP2 via resistor R6. Optocoupler OP2 has four pins: Pin 1 of optocoupler OP2 is electrically connected to resistor R6, Pin 2 of optocoupler OP2 is grounded, Pin 3 of optocoupler OP2 is a voltage input pin, and Pin 4 of optocoupler OP2 is electrically connected to the first driver chip. Pin 6 of the first driver chip is a second input pin and is electrically connected to Pin 4 of optocoupler OP2. Pin 4 of optocoupler OP2 is grounded via resistor R7. Pin 5 of the first driver chip is a control signal pin and is connected to a light-emitting diode LED2. The anode of LED LED2 is electrically connected to the first driver chip, and the cathode of LED LED2 is grounded.

[0042] Pins 12 and 13 of the first driver chip are first output pins. When connected, pins 12 and 13 of the first driver chip are electrically connected to the drive connection terminal, which is then connected to the diesel generator set's control system. The drive connection terminal has eight pins, with pin 1 of the drive connection terminal electrically connected to pins 12 and 13 of the first driver chip. Pins 9 and 10 of the first driver chip are second output pins. When connected, pins 9 and 10 of the first driver chip are electrically connected to pin 3 of the drive connection terminal. The first driver chip outputs two control signals, which act on pins 1 and 3 of the drive connection terminal, respectively. These two control signals can act on the diesel generator set's control system, thereby controlling the functions of both control systems.

[0043] Pin 16 of the bus transceiver is connected to an optocoupler OP3 via resistor R8. Optocoupler OP3 has four pins: Pin 1 of the optocoupler OP3 is electrically connected to resistor R8, Pin 2 of the optocoupler OP3 is grounded, Pin 3 of the optocoupler OP3 is a voltage input pin, and Pin 4 of the optocoupler OP3 is electrically connected to the second driver chip. The second driver chip is model BTS723-2 and has a total of 14 pins. Pin 2 of the second driver chip is the first input pin and is electrically connected to Pin 4 of the optocoupler OP3. Pin 4 of the optocoupler OP3 is grounded via resistor R9. Pin 3 of the second driver chip is a control signal pin and is connected to a light-emitting diode LED3. The anode of LED3 is electrically connected to the second driver chip, and the cathode of LED3 is grounded.

[0044] Pin 15 of the bus transceiver is connected to an optocoupler OP4 via resistor R10. Optocoupler OP4 has four pins: Pin 1 of optocoupler OP4 is electrically connected to resistor R10, Pin 2 of optocoupler OP4 is grounded, Pin 3 of optocoupler OP4 is a voltage input pin, and Pin 4 of optocoupler OP4 is electrically connected to the second driver chip. Pin 6 of the second driver chip is a second input pin and is electrically connected to Pin 4 of optocoupler OP4. Pin 4 of optocoupler OP4 is grounded via resistor R11. Pin 5 of the second driver chip is a control signal pin and is connected to a light-emitting diode LED4. The anode of LED LED4 is electrically connected to the second driver chip, and the cathode of LED LED4 is grounded.

[0045] Pins 12 and 13 of the second driver chip are first output pins. These pins are then electrically connected to pin 5 of the driver connection terminal. Pins 9 and 10 of the first driver chip are second output pins. These pins are then electrically connected to pin 7 of the driver connection terminal. The second driver chip outputs two control signals, which act on pins 5 and 7 of the driver connection terminal, respectively. These two control signals can be applied to the diesel generator set's control system, thereby controlling the functions of both control systems.

[0046] The two driver chips output a total of four control signals, which act on the diesel generator set control system. For example, they can act on the control system's load, load reduction, stop, and test communication instructions.

[0047] The power supply module includes a main power supply unit and an isolated power supply unit. The main power supply unit and the isolated power supply unit are electrically connected, the main power supply unit is used to generate 5V and 12V DC voltages, and the isolated power supply unit is used to generate 15V DC voltage.

[0048] Specifically, such as Figure 8 As shown, the main power supply unit includes a power connection terminal, a diode D1, a diode D2, and a step-down chip. The power connection terminal is used to connect to a battery or power cord. The power connection terminal has two pins. Pin 1 of the power connection terminal is the positive pin and is connected to a fuse F1. The end of fuse F1 away from the power connection terminal is connected to the anode of diode D1. The cathode of diode D1 is connected to the step-down chip. The step-down chip has a total of four pins. Pin 1 of the step-down chip is grounded. Pin 2 of the step-down chip is a positive voltage input pin. Pin 2 of the step-down chip is connected to the cathode of diode D1 and is grounded through capacitor C3. Pins 3 and 4 of the step-down chip are output pins. Pin 3 of the step-down chip is a positive voltage output pin. Pin 3 of the step-down chip is connected to an inductor L1. The end of inductor L1 away from the step-down chip is connected to a resistor R1. The junction between inductor L1 and resistor R1 is grounded through capacitor C5. The end of resistor R1 away from inductor L1 is set as a 5V DC voltage output node. The 5V DC voltage output node is connected to ground through LEDP1. The anode of LEDP1 is connected to the 5V DC voltage output node, and the cathode of LEDP1 is grounded. Pin 4 of the step-down chip is grounded. A 12V DC voltage is input to the power supply terminal, which is then stepped down by the step-down chip to output a 5V DC voltage, providing a stable voltage for each module.

[0049] The connection node between the fuse F1 and the diode D1 is connected to the anode of the diode D2. The cathode of the diode D2 is grounded through the diode C2. The cathode of the diode D2 is set as the 12V DC voltage output node. The 12V DC voltage output node is connected to the isolated power supply unit. Specifically, Figure 9 As shown, the isolated power supply unit includes an isolated power supply chip, model number WRA1215MD, and a total of five pins. Pin 1 of the isolated power supply chip is grounded, and pin 2 of the isolated power supply chip is a positive voltage input pin, electrically connected to a 12V DC voltage output node. Pin 3 of the isolated power supply chip is a positive voltage output pin, and a 15V DC voltage output node is provided on pin 3 of the isolated power supply chip. The 15V DC voltage output node is connected to a resistor R13, and the end of the resistor R13 away from the 15V DC voltage output node is connected to a light-emitting diode LEDP2. The anode of the light-emitting diode LEDP2 is connected to the resistor R13, and the cathode of the light-emitting diode LEDP2 is grounded. Pin 5 of the isolated power supply chip is a negative voltage output pin. It also houses a -15V DC voltage output node, which is connected to a light-emitting diode (LEDP3). The anode of LEDP3 is connected to the -15V DC voltage output node, and the cathode of LEDP3 is connected to resistor R12. The end of resistor R12, facing away from LEDP3, is grounded. The ±15V DC voltage output from the isolated power supply chip is primarily used to power the first, second, third, and fourth dual operational amplifiers, isolating the data acquisition module from the main power supply.

[0050] Furthermore, it also includes a communication test module, which includes an RS232 communication chip and an RS232 connection terminal. The model of the RS232 communication chip is MAX232, and the 11th pin of the RS232 communication chip is the TXD pin. The 11th pin of the RS232 communication chip is electrically connected to the 3rd pin of the main control chip. The 12th pin of the RS232 communication chip is the RXD pin. The 12th pin of the RS232 communication chip is electrically connected to the 2nd pin of the main control chip. The 13th and 14th pins of the RS232 communication chip are electrically connected to the RS232 connection terminal, respectively. The RS232 connection terminal is used to connect to the control system of the diesel generator set. The RS232 connection terminal has a total of 3 pins. The 1st pin of the RS232 connection terminal is connected to the 14th pin (TX pin) of the RS232 communication chip. The 2nd pin of the RS232 connection terminal is connected to the 13th pin (RX pin) of the RS232 communication chip. The 3rd pin of the RS232 connection terminal is grounded. The RS232 communication chip is used to test the communication function of the diesel generator set to detect whether the communication function of the diesel generator set is normal.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A ground detection device for the performance of a railway passenger car diesel generator set, characterized in that: Including main control module, operation parameter acquisition module, drive module and power module; The main control module is electrically connected to the operating parameter acquisition module and the driving module respectively; The power supply module is electrically connected to the main control module, the operating parameter acquisition module and the driving module respectively; The operating parameter acquisition module is used to directly acquire the operating parameters of the diesel generator set; the main control module issues control instructions according to the operating parameters; and the drive module drives the diesel generator set according to the control instructions.

2. A railway passenger car diesel generator set performance ground detection device according to claim 1, characterized in that: The main control module includes a main control chip, an ISP interface and a crystal oscillator, and the ISP interface and the crystal oscillator are electrically connected to the main control chip respectively.

3. A railway passenger car diesel generator set performance ground detection device according to claim 2, characterized in that: The operating parameter acquisition module includes an oil pressure data acquisition unit, an oil temperature data acquisition unit, a water temperature data acquisition unit and a speed data acquisition unit; The oil pressure data acquisition unit includes a first dual operational amplifier and an oil pressure acquisition terminal, wherein the first dual operational amplifier is electrically connected to the main control chip, and the oil pressure acquisition terminal is electrically connected to the first dual operational amplifier; The oil temperature data acquisition unit includes a second dual operational amplifier and an oil temperature acquisition terminal, the second dual operational amplifier is electrically connected to the main control chip, and the oil temperature acquisition terminal is electrically connected to the second dual operational amplifier; The water temperature data acquisition unit includes a third dual operational amplifier and a water temperature acquisition terminal, the third dual operational amplifier is electrically connected to the main control chip, and the water temperature acquisition terminal is electrically connected to the third dual operational amplifier; The speed data acquisition unit includes a fourth dual operational amplifier and a speed acquisition terminal. The fourth dual operational amplifier is electrically connected to the main control chip, and the speed acquisition terminal is electrically connected to the first dual operational amplifier.

4. The ground detection device for the performance of a railway passenger car diesel generator set according to claim 2, characterized in that: The driving module includes a bus transceiver, a first driving chip, a second driving chip and a driving connection terminal. The first driving chip and the second driving chip are electrically connected to the main control chip through an optical coupler, and the driving connection terminal is electrically connected to the first driving chip and the second driving chip.

5. The ground detection device for the performance of a railway passenger car diesel generator set according to claim 1, characterized in that: The power supply module includes a main power supply unit and an isolated power supply unit. The main power supply unit is electrically connected to the isolated power supply unit. The main power supply unit is used to generate 5V and 12V DC voltages, and the isolated power supply unit is used to generate 15V DC voltage.

6. A railway passenger car diesel generator set performance ground detection device according to claim 5, characterized in that: The main power supply unit includes a power connection terminal, a diode D1, a diode D2 and a step-down chip. The power connection terminal is electrically connected to the step-down chip through the diode D1, the anode of the diode D1 is electrically connected to the power connection terminal, the cathode of the diode D1 is electrically connected to the step-down chip, the anode of the diode D2 is electrically connected to the power connection terminal, and the cathode of the diode D2 is grounded through a capacitor C2.

7. A railway passenger car diesel generator set performance ground detection device according to claim 6, characterized in that: The isolated power supply unit includes an isolated power supply chip, and an input end of the isolated power supply chip is electrically connected to the cathode of the diode D2.

8. The ground detection device for the performance of a railway passenger car diesel generator set according to claim 2, characterized in that: It also includes a communication test module, which includes an RS232 communication chip and an RS232 connection terminal. The RS232 communication chip is electrically connected to the main control chip, and the RS232 connection terminal is electrically connected to the RS232 communication chip.

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