Multi-fuel internal combustion engine monitoring system

Abstract

The utility model discloses a multi-fuel internal combustion engine monitoring system which comprises a main control chip U1, the input end of the main control chip U1 is connected with a signal processing module, the output end of the main control chip U1 is connected with a communication module, a driving module and a warning module, and the main control chip U1 is connected with a storage module used for data storage. The input end of the signal processing module is connected with a sensor and used for collecting and processing data of various sensors and transmitting the data to the main control chip U1, and the main control chip U1 conducts comparative analysis on the data and conducts alarming, forced parking and other operations on the conditions of high temperature, low pressure, overspeed rotating speed and the like. The communication module can transmit collected data to the application software layer, workers can further process and analyze the data, comprehensive analysis and overall judgment can be conducted on overall operation of the internal combustion engine, and faults or misoperation are reduced.

Description

Technical Field

[0001] The utility model relates to an internal combustion engine, in particular to a monitoring circuit of the internal combustion engine. Background Art

[0002] During the entire operation of the internal combustion engine, in order to ensure its safe, reliable and efficient operation, key parameters such as temperature, pressure and speed usually need to be strictly controlled. Traditional monitoring technology mainly relies on various instruments to implement monitoring, but the data of these instruments are often independent of each other, making it difficult to achieve comprehensive analysis and overall judgment of the data. In addition, since most monitoring work is done manually, it is easy to be negligent or misjudgment. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a multi-fuel internal combustion engine monitoring system.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A multi-fuel internal combustion engine monitoring system includes a main control chip U1, the input end of the main control chip U1 is connected to a signal processing module, the output end is connected to a communication module, a drive module and an alarm module, and the main control chip U1 is connected to a storage module for data storage.

[0006] The signal processing module includes a speed signal processing circuit, an analog signal processing circuit and a switch signal processing circuit. The speed signal processing circuit includes a speed interface P9. The first pin of the speed interface P9 is connected to a resistor R78 and a resistor R100 respectively. The resistor R78 is connected to the first pin of the transistor Q13 through a diode D30. A resistor R77 is connected between the first pin and the second pin of the transistor Q13. The third pin of the transistor Q13 is divided into two paths, one path is connected to a resistor R76, and the other path is connected to the 14th pin of the main control chip U1. A capacitor C60 is connected between the third pin and the second pin of the transistor Q13. The resistor R100 is connected to one end of the resistor R101 through a diode D31, and the other end of the resistor R101 is connected to the 128th pin of the main control chip U1. The processing circuit includes a detection interface J1, the 17th pin of the detection interface J1 is connected to one end of a resistor R70, the other end of the resistor R70 is divided into two paths, one path is connected to a resistor R71, and the other path is grounded through a resistor R72, the resistor R71 is divided into two paths, one path is connected to the 1st pin of the main control chip U1, and the other path is grounded through a capacitor C58, and the resistor R71 is respectively connected to a TVS diode D12 and a switching diode D11; the switch signal processing circuit includes a photoelectric coupler U3, the 13th pin of the detection interface J1 is connected to the 1st pin of the photoelectric coupler U3 through a resistor R5, a resistor R10 is connected between the 1st pin and the 2nd pin of the photoelectric coupler U3, and the 4th pin of the photoelectric coupler U3 is divided into two paths, one path is connected to the resistor R3, and the other path is connected to the 82nd pin of the main control chip U1 through a resistor R6.

[0007] The communication module includes a CAN transceiver circuit, an RS485 transceiver circuit and an RS323 transceiver circuit. The CAN transceiver circuit includes a CAN transceiver U9. The second pin and the third pin of the CAN transceiver U9 are respectively connected to the 20th pin and the 19th pin of the main control chip U1. The seventh pin of the CAN transceiver U9 is divided into two paths, one of which is connected to the capacitor C15 and the other is connected to the first pin of the common mode filter L3. The sixth pin of the CAN transceiver U9 is divided into two paths, one of which is connected to the capacitor C18 and the other is connected to the common mode filter L3. The common mode filter L3 is connected to the third pin of the common mode filter L3. The second pin of the common mode filter L3 is divided into two paths, one of which is connected to the third pin of the electrostatic protector TVS2, and the other is connected to one end of the fuse F3 through the resistor R22. The other end of the fuse F3 is divided into two paths, one of which is connected to the gas venting tube GDT3, and the other is connected to the resistor R109. The fourth pin of the common mode filter L3 is divided into two paths, one of which is connected to the first pin of the electrostatic protector TVS2, and the other is connected to one end of the fuse F4 through the resistor R25. The other end of the fuse F4 The end is divided into two paths, one path is connected to the gas release pipe GDT4, and the other path is connected to the resistor R109; the RS485 transceiver circuit includes a transceiver U5, the 3rd pin of the transceiver U5 is connected to the 49th pin of the main control chip U1, the 4th pin and the 5th pin of the transceiver U5 are simultaneously connected to the 47th pin of the main control chip U1, the 6th pin of the transceiver U5 is connected to the 48th pin of the main control chip U1, and the 13th pin of the transceiver U5 is divided into two paths, one path is grounded through the resistor R14, and the other path is connected to the fuse F through the resistor R16 1. The 12th pin of the transceiver U5 is divided into two paths, one path is connected to the resistor R19, and the other path is connected to the fuse F2 through the resistor R18. The electrostatic protector TVS1 is connected between the 12th pin and the 13th pin of the transceiver U5. The fuse F1 is divided into two paths, one path is connected to the gas venting pipe GDT1, and the other path is connected to the resistor R111. The fuse F2 is connected to the gas venting pipe GDT2. The gas venting pipe GDT1 and the gas venting pipe GDT2 are connected to each other. The RS323 transceiver circuit includes a transceiver U21.

[0008] The driving module includes a driving chip U20, wherein the first pin of the driving chip U20 is connected to the 44th pin of the main control chip U1, the second pin of the driving chip U20 is connected to the 36th pin of the main control chip U1, the third pin of the driving chip U20 is connected to the 34th pin of the main control chip U1, the fourth pin of the driving chip U20 is connected to the 33rd pin of the main control chip U1, the fifth pin of the driving chip U20 is connected to the 27th pin of the main control chip U1, the sixth pin of the driving chip U20 is connected to the 28th pin of the main control chip U1, the seventh pin of the driving chip U20 is connected to the 26th pin of the main control chip U1, and the The 8th pin of the driver chip U20 is connected to the 3rd pin of the photocoupler U6, the 11th pin and the 12th pin of the driver chip U20 are simultaneously connected to the 4th pin of the relay K6, the 13th pin of the driver chip U20 is connected to the 4th pin of the relay K3, the 14th pin of the driver chip U20 is connected to the 4th pin of the relay K4, the 15th pin of the driver chip U20 is connected to the 4th pin of the relay K2, the 16th pin of the driver chip U20 is connected to the 4th pin of the relay K5, the 17th pin of the driver chip U20 is connected to the 4th pin of the relay K1, and the 18th pin of the driver chip U20 is connected to the 4th pin of the relay K7.

[0009] The warning module includes a buzzer J4, a light-emitting diode LED2, a light-emitting diode LED3 and a display screen P3. The 78th pin of the main control chip U1 is connected to the cathode of the light-emitting diode LED2, the anode of the light-emitting diode LED2 is connected to the resistor R20, the 79th pin of the main control chip U1 is connected to the cathode of the light-emitting diode LED3, the anode of the light-emitting diode LED3 is connected to the resistor R21, the 25th pin of the main control chip U1 is connected to the 3rd pin of the display screen P3 through the resistor R32, the 24th pin of the main control chip U1 is connected to the 2nd pin of the display screen P3 through the resistor R33, the 50th pin of the main control chip U1 is connected to the 1st pin of the transistor Q11 through the resistor R69, the 2nd pin of the transistor Q11 is grounded, the resistor R79 is connected between the 1st pin and the 2nd pin of the transistor Q11, and the 3rd pin of the transistor Q11 is connected to the buzzer J4.

[0010] The main control chip U1 is connected to a positioning module, and the positioning module includes a locator U8, wherein the 18th pin of the locator U8 is connected to the 84th pin of the main control chip U1, the 9th pin of the locator U8 is connected to the 69th pin of the main control chip U1, the 5th pin of the locator U8 is connected to the 70th pin of the main control chip U1, the 3rd pin of the locator U8 is connected to the 41st pin of the main control chip U1 through a resistor R23, and the 2nd pin of the locator U8 is connected to the 42nd pin of the main control chip U1 through a resistor R31.

[0011] The storage module includes a ferroelectric memory U10 and a flash memory U7, wherein the first pin of the flash memory U7 is connected to the 109th pin of the main control chip U1, the 7th pin of the flash memory U7 is connected to the 108th pin of the main control chip U1, the 8th pin of the flash memory U7 is connected to the 105th pin of the main control chip U1, the 9th pin of the flash memory U7 is connected to the 110th pin of the main control chip U1, the 15th pin of the flash memory U7 is connected to the 106th pin of the main control chip U1, and the 16th pin of the flash memory U7 is connected to the 107th pin of the main control chip U1. The 6th pin of the ferroelectric memory U10 is divided into two paths, one path is connected to the 73rd pin of the main control chip U1, and the other path is connected to the resistor R29. The 5th pin of the ferroelectric memory U10 is divided into two paths, one path is connected to the 74th pin of the main control chip U1, and the other path is connected to the resistor R30.

[0012] The main control chip U1 is connected to a communication module U2 and a voice module M1, the third pin of the communication module U2 is connected to the 16th pin of the main control chip U1, the fourth pin of the communication module U2 is connected to the 15th pin of the main control chip U1, the fifth pin of the communication module U2 is connected to the third pin of the transistor Q1, the first pin of the transistor Q1 is connected to the 57th pin of the main control chip U1, the sixth pin of the communication module U2 is connected to the 59th pin of the main control chip U1, and the seventh pin of the communication module U2 is connected to the 58th pin of the main control chip U1; the first pin of the voice module M1 is connected to the 8th pin of the main control chip U1, the second pin of the voice module M1 is connected to the 7th pin of the main control chip U1, the 12th pin of the voice module M1 is divided into two paths, one path is connected to the 68th pin of the main control chip U1, and the other path is connected to the resistor R106, and the 17th pin and the 18th pin of the voice module M1 are respectively connected to the speaker P1.

[0013] The beneficial effects of the present invention are as follows: the input end of the main control chip U1 of the present invention is connected to a signal processing module, and the output end is connected to a communication module, a drive module and a warning module. The input end of the signal processing module is connected to a sensor for collecting and processing various sensor data and transmitting them to the main control chip U1. The main control chip U1 compares and analyzes the data, and issues alarms and performs forced parking operations for situations such as high temperature, low pressure and overspeed. The communication module can transmit the collected data to the application software layer, and the staff can further process and analyze it, and can conduct a comprehensive analysis and overall judgment on the overall operation of the internal combustion engine to reduce the occurrence of failures or misoperations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a circuit block diagram of the utility model;

[0016] Figure 2 It is the circuit diagram of the first part of the utility model;

[0017] Figure 3 It is the circuit diagram of the second part of the utility model;

[0018] Figure 4 It is the circuit diagram of the third part of the utility model;

[0019] Figure 5 It is the circuit diagram of the fourth part of the utility model;

[0020] Figure 6 It is the fifth circuit diagram of the utility model;

[0021] Figure 7 It is the sixth circuit diagram of the utility model;

[0022] Figure 8 It is the seventh circuit diagram of the utility model;

[0023] Fig. 9 It is the eighth circuit diagram of the utility model;

[0024] Fig.10 It is the ninth circuit diagram of the utility model;

[0025] Fig.11 It is the circuit diagram of the tenth part of the utility model;

[0026] Fig.12 It is the circuit diagram of the eleventh part of the utility model;

[0027] Fig.13 It is the twelfth circuit diagram of the utility model;

[0028] Fig.14 It is the thirteenth circuit diagram of the utility model;

[0029] Fig.15 This is the fourteenth circuit diagram of the utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0031] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0032] Some embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0033] Figures 2 to 15 The complete circuit diagram of this embodiment is shown in Figure 1. For ease of observation, the complete circuit diagram is divided into fourteen parts ( Figures 2 to 15 ), terminals with the same number in the figure indicate electrical connections.

[0034] Reference Figure 1 A multi-fuel internal combustion engine monitoring system includes a main control chip U1, which is a conventional single-chip microcomputer. The input end of the main control chip U1 is connected to a signal processing module, and the output end is connected to a communication module, a drive module and a warning module. The main control chip U1 is connected to a storage module for data storage. The input end of the signal processing module is connected to a sensor for collecting and processing various sensor data and transmitting them to the main control chip U1. The main control chip U1 compares and analyzes the data, and issues alarms and forced parking operations for high temperature, low pressure and overspeed. The communication module can transmit the collected data to the application software layer, and the staff can further process and analyze it to achieve comprehensive analysis and overall judgment, and reduce the occurrence of faults or misoperations.

[0035] Reference Figure 2 The main control chip U1 is connected to crystal oscillator Y1, crystal oscillator Y2, program burning entrance P4, filter capacitor C21, filter capacitor C37, filter capacitor C38, filter capacitor C41, filter capacitor C9, filter capacitor C10, filter capacitor C8, filter capacitor C11, filter capacitor C42, filter capacitor C39, filter capacitor C40 and filter capacitor C35, so that the main control chip U1 can maintain stable operation.

[0036] In this embodiment, the signal processing module includes a speed signal processing circuit, an analog signal processing circuit and a switch signal processing circuit. Figure 3The speed signal processing circuit includes a speed interface P9, and the speed interface P9 is externally connected to a speed sensor for obtaining speed parameters; the first pin of the speed interface P9 is respectively connected to a resistor R78 and a resistor R100, the resistor R78 is connected to the first pin of the transistor Q13 through a diode D30, a resistor R77 is connected between the first pin and the second pin of the transistor Q13, the third pin of the transistor Q13 is divided into two paths, one path is connected to the resistor R76, and the other path is connected to the 14th pin of the main control chip U1, a capacitor C60 is connected between the third pin and the second pin of the transistor Q13, the resistor R100 is connected to one end of the resistor R101 through a diode D31, and the other end of the resistor R101 is connected to the 128th pin of the main control chip U1, and the circuit composed of the resistor R100, the diode D31, the resistor R101, the capacitor C69, the resistor R102, the capacitor C70 and the TVS diode D25 is used for voltage stabilization and static electricity.

[0037] Reference Figure 4 and Figure 5 , the analog signal processing circuit includes a detection interface J1, the 17th pin of the detection interface J1 is connected to one end of the resistor R70, the other end of the resistor R70 is divided into two paths, one is connected to the resistor R71, and the other is grounded through the resistor R72, the resistor R71 is divided into two paths, one is connected to the 1st pin of the main control chip U1, and the other is grounded through the capacitor C58, and the resistor R71 is respectively connected to the TVS diode D12 and the switch diode D11; the above is an analog signal processing circuit, which can be used to collect and process data such as internal combustion engine temperature, fresh water pressure, starting air pressure, oil pressure, etc. and transmit them to the main control chip U1, Figure 4 The device also includes three analog signal processing circuits with the same purpose.

[0038] Reference Figure 5 , the switch signal processing circuit includes a photocoupler U3, the 13th pin of the detection interface J1 is connected to the 1st pin of the photocoupler U3 through a resistor R5, a resistor R10 is connected between the 1st pin and the 2nd pin of the photocoupler U3, and the 4th pin of the photocoupler U3 is divided into two paths, one path is connected to the resistor R3, and the other path is connected to the 82nd pin of the main control chip U1 through a resistor R6. The switch signal processing circuit is mainly used to monitor the external state, convert the external switch response into a 0-3.3V mutation in the form of a 0-5V / 0-24V voltage mutation and then transmit it to the corresponding pin of the main control chip U1. The main control chip U1 detects the pin state mutation and makes corresponding processing.

[0039] The communication module includes a CAN transceiver circuit, an RS485 transceiver circuit and an RS323 transceiver circuit. Figure 6The CAN transceiver circuit includes a CAN transceiver U9, wherein the 2nd and 3rd pins of the CAN transceiver U9 are respectively connected to the 20th and 19th pins of the main control chip U1, the 7th pin of the CAN transceiver U9 is divided into two paths, one of which is connected to the capacitor C15, and the other is connected to the 1st pin of the common mode filter L3, the 6th pin of the CAN transceiver U9 is divided into two paths, one of which is connected to the capacitor C18, and the other is connected to the 3rd pin of the common mode filter L3, the 2nd pin of the common mode filter L3 is divided into two paths, one of which is connected to the 3rd pin of the electrostatic protector TVS2, and the other is connected to one end of the fuse F3 through the resistor R22, and the fuse F3 is connected to the capacitor C18. The other end of the fuse F3 is divided into two paths, one of which is connected to the gas vent pipe GDT3, and the other is connected to the resistor R109. The 4th pin of the common mode filter L3 is divided into two paths, one of which is connected to the 1st pin of the electrostatic protector TVS2, and the other is connected to one end of the fuse F4 through the resistor R25. The other end of the fuse F4 is divided into two paths, one of which is connected to the gas vent pipe GDT4, and the other is connected to the resistor R109. The CAN transceiver circuit includes a remote transmission port P5 for remote information transmission, a filter capacitor C19 and a filter capacitor C22 for filtering. The CAN transceiver circuit mainly controls the information transmission between the hardware units of the system, monitors the operating status of the internal combustion engine and other functions.

[0040] Reference Figure 7 The RS485 transceiver circuit includes a transceiver U5, wherein the third pin of the transceiver U5 is connected to the 49th pin of the main control chip U1, the fourth pin and the fifth pin of the transceiver U5 are simultaneously connected to the 47th pin of the main control chip U1, the sixth pin of the transceiver U5 is connected to the 48th pin of the main control chip U1, the 13th pin of the transceiver U5 is divided into two paths, one path is grounded through a resistor R14, and the other path is connected to a fuse F1 through a resistor R16, the 12th pin of the transceiver U5 is divided into two paths, one path is connected to a resistor R19, and the other path is connected to a fuse F2 through a resistor R18, an electrostatic protector TVS1 is connected between the 12th pin and the 13th pin of the transceiver U5, the fuse F1 is divided into two paths, one path is connected to a gas venting pipe GDT1, and the other path is connected to a resistor R111, the fuse F2 is connected to a gas venting pipe GDT2, and the gas venting pipe GDT1 and the gas venting pipe GDT2 are connected to each other. The RS485 transceiver circuit includes a data transmission port P2 and a communication interface J3. The communication interface J3 can be connected to a host computer to monitor the operating status of the internal combustion engine.

[0041] Reference Figure 8The RS323 transceiver circuit includes a transceiver U21, the 12th pin of the transceiver U21 is connected to the 56th pin of the main control chip U1, the 11th pin of the transceiver U21 is connected to the 55th pin of the main control chip U1, and the transceiver U21 is connected to the communication port P10. The RS323 transceiver circuit can be used as a backup or connected to a host computer to monitor the operating status of the internal combustion engine.

[0042] Reference Fig. 9 The driving module includes a driving chip U20, wherein the first pin of the driving chip U20 is connected to the 44th pin of the main control chip U1, the second pin of the driving chip U20 is connected to the 36th pin of the main control chip U1, the third pin of the driving chip U20 is connected to the 34th pin of the main control chip U1, the fourth pin of the driving chip U20 is connected to the 33rd pin of the main control chip U1, the fifth pin of the driving chip U20 is connected to the 27th pin of the main control chip U1, the sixth pin of the driving chip U20 is connected to the 28th pin of the main control chip U1, the seventh pin of the driving chip U20 is connected to the 26th pin of the main control chip U1, and the driving chip The 8th pin of U20 is connected to the 3rd pin of the photocoupler U6, the 11th pin and the 12th pin of the driver chip U20 are simultaneously connected to the 4th pin of the relay K6, the 13th pin of the driver chip U20 is connected to the 4th pin of the relay K3, the 14th pin of the driver chip U20 is connected to the 4th pin of the relay K4, the 15th pin of the driver chip U20 is connected to the 4th pin of the relay K2, the 16th pin of the driver chip U20 is connected to the 4th pin of the relay K5, the 17th pin of the driver chip U20 is connected to the 4th pin of the relay K1, and the 18th pin of the driver chip U20 is connected to the 4th pin of the relay K7. The switch ends (1st pin and 3rd pin) of the relay K1, relay K2, relay K3, relay K4, relay K5, relay K6 and relay K7 are respectively connected to the detection interface J1, and the driver module controls the power output through the relay. This is because the start and stop control current of the internal combustion engine is relatively large, and the use of relay isolation control can meet the system working requirements.

[0043] Reference Fig.10The warning module includes a buzzer J4, a light emitting diode LED2, a light emitting diode LED3 and a display screen P3. The 78th pin of the main control chip U1 is connected to the cathode of the light emitting diode LED2, the anode of the light emitting diode LED2 is connected to the resistor R20, the 79th pin of the main control chip U1 is connected to the cathode of the light emitting diode LED3, the anode of the light emitting diode LED3 is connected to the resistor R21, the 25th pin of the main control chip U1 is connected to the 3rd pin of the display screen P3 through the resistor R32, the 24th pin of the main control chip U1 is connected to the 2nd pin of the display screen P3 through the resistor R33, the 50th pin of the main control chip U1 is connected to the 1st pin of the transistor Q11 through the resistor R69, the 2nd pin of the transistor Q11 is grounded, the resistor R79 is connected between the 1st pin and the 2nd pin of the transistor Q11, and the 3rd pin of the transistor Q11 is connected to the buzzer J4. It is convenient to remind the staff.

[0044] The main control chip U1 is connected to a communication module U2 and a voice module M1, the third pin of the communication module U2 is connected to the 16th pin of the main control chip U1, the fourth pin of the communication module U2 is connected to the 15th pin of the main control chip U1, the fifth pin of the communication module U2 is connected to the third pin of the transistor Q1, the first pin of the transistor Q1 is connected to the 57th pin of the main control chip U1, the sixth pin of the communication module U2 is connected to the 59th pin of the main control chip U1, and the seventh pin of the communication module U2 is connected to the 58th pin of the main control chip U1; the first pin of the voice module M1 is connected to the 8th pin of the main control chip U1, the second pin of the voice module M1 is connected to the 7th pin of the main control chip U1, the 12th pin of the voice module M1 is divided into two paths, one path is connected to the 68th pin of the main control chip U1, and the other path is connected to the resistor R106, and the 17th pin and the 18th pin of the voice module M1 are respectively connected to the speaker P1. The communication module U2 allows the monitoring system to communicate wirelessly, and the staff can view the operating parameters of the internal combustion engine on the wireless terminal (mobile phone) for easy viewing.

[0045] Reference Fig.11 The main control chip U1 is connected to a positioning module to provide a positioning function for the monitoring system. The positioning module includes a locator U8. The 18th pin of the locator U8 is connected to the 84th pin of the main control chip U1, the 9th pin of the locator U8 is connected to the 69th pin of the main control chip U1, the 5th pin of the locator U8 is connected to the 70th pin of the main control chip U1, the 3rd pin of the locator U8 is connected to the 41st pin of the main control chip U1 through a resistor R23, and the 2nd pin of the locator U8 is connected to the 42nd pin of the main control chip U1 through a resistor R31.

[0046] Reference Fig.12The storage module includes a ferroelectric memory U10 and a flash memory U7, wherein the first pin of the flash memory U7 is connected to the 109th pin of the main control chip U1, the 7th pin of the flash memory U7 is connected to the 108th pin of the main control chip U1, the 8th pin of the flash memory U7 is connected to the 105th pin of the main control chip U1, the 9th pin of the flash memory U7 is connected to the 110th pin of the main control chip U1, the 15th pin of the flash memory U7 is connected to the 106th pin of the main control chip U1, the 16th pin of the flash memory U7 is connected to the 107th pin of the main control chip U1, the 6th pin of the ferroelectric memory U10 is divided into two paths, one path is connected to the 73rd pin of the main control chip U1, and the other path is connected to the resistor R29, and the 5th pin of the ferroelectric memory U10 is divided into two paths, one path is connected to the 74th pin of the main control chip U1, and the other path is connected to the resistor R30. The parameters of the operation of the internal combustion engine can be stored, which is convenient for the staff to extract and record.

[0047] Reference Fig.13 The monitoring system is provided with a power supply module, which can reduce the input 24V to 12V, 24V to 5V and 5V to 3.3V. The power supply module is used to provide a stable working voltage for each module in the monitoring system. Fig.14 The monitoring system is provided with a power input detection circuit. The 9th pin and the 10th pin of the main control chip U1 are respectively connected to the power input detection circuit to detect whether the input voltage reaches the standard 24V.

[0048] Reference Fig.15 The monitoring system is connected to a manual controller, which includes an emergency stop control port SW1, an emergency stop control port SW2, a parking control port SW3, a start control port SW4, a reset control port SW5, an override port SW6, a mute port SW7 and a remote control SW8, which is convenient for the staff to manually adjust and control.

[0049] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multi-fuel internal combustion engine monitoring system, including a main control chip U1, characterized in that The input end of the main control chip U1 is connected to a signal processing module, the output end is connected to a communication module, a driving module and an alarm module, and the main control chip U1 is connected to a storage module for data storage; The signal processing module includes a speed signal processing circuit, an analog signal processing circuit and a switch signal processing circuit. The speed signal processing circuit includes a speed interface P9. The first pin of the speed interface P9 is connected to a resistor R78 and a resistor R100 respectively. The resistor R78 is connected to the first pin of the transistor Q13 through a diode D30. A resistor R77 is connected between the first pin and the second pin of the transistor Q13. The third pin of the transistor Q13 is divided into two paths, one path is connected to a resistor R76, and the other path is connected to the 14th pin of the main control chip U1. A capacitor C60 is connected between the third pin and the second pin of the transistor Q13. The resistor R100 is connected to one end of the resistor R101 through a diode D31, and the other end of the resistor R101 is connected to the 128th pin of the main control chip U1. The processing circuit includes a detection interface J1, the 17th pin of the detection interface J1 is connected to one end of a resistor R70, the other end of the resistor R70 is divided into two paths, one path is connected to a resistor R71, and the other path is grounded through a resistor R72, the resistor R71 is divided into two paths, one path is connected to the 1st pin of the main control chip U1, and the other path is grounded through a capacitor C58, and the resistor R71 is respectively connected to a TVS diode D12 and a switching diode D11; the switch signal processing circuit includes a photoelectric coupler U3, the 13th pin of the detection interface J1 is connected to the 1st pin of the photoelectric coupler U3 through a resistor R5, a resistor R10 is connected between the 1st pin and the 2nd pin of the photoelectric coupler U3, and the 4th pin of the photoelectric coupler U3 is divided into two paths, one path is connected to the resistor R3, and the other path is connected to the 82nd pin of the main control chip U1 through a resistor R6.

2. The multi-fuel internal combustion engine monitoring system according to claim 1, characterized in that The communication module includes a CAN transceiver circuit, an RS485 transceiver circuit and an RS323 transceiver circuit. The CAN transceiver circuit includes a CAN transceiver U9. The second pin and the third pin of the CAN transceiver U9 are respectively connected to the 20th pin and the 19th pin of the main control chip U1. The seventh pin of the CAN transceiver U9 is divided into two paths, one of which is connected to the capacitor C15 and the other is connected to the first pin of the common mode filter L3. The sixth pin of the CAN transceiver U9 is divided into two paths, one of which is connected to the capacitor C18 and the other is connected to the common mode filter L3. The common mode filter L3 is connected to the third pin of the common mode filter L3. The second pin of the common mode filter L3 is divided into two paths, one of which is connected to the third pin of the electrostatic protector TVS2, and the other is connected to one end of the fuse F3 through the resistor R22. The other end of the fuse F3 is divided into two paths, one of which is connected to the gas venting tube GDT3, and the other is connected to the resistor R109. The fourth pin of the common mode filter L3 is divided into two paths, one of which is connected to the first pin of the electrostatic protector TVS2, and the other is connected to one end of the fuse F4 through the resistor R25. The other end of the fuse F4 The end is divided into two paths, one path is connected to the gas release pipe GDT4, and the other path is connected to the resistor R109; the RS485 transceiver circuit includes a transceiver U5, the 3rd pin of the transceiver U5 is connected to the 49th pin of the main control chip U1, the 4th pin and the 5th pin of the transceiver U5 are simultaneously connected to the 47th pin of the main control chip U1, the 6th pin of the transceiver U5 is connected to the 48th pin of the main control chip U1, and the 13th pin of the transceiver U5 is divided into two paths, one path is grounded through the resistor R14, and the other path is connected to the fuse F through the resistor R16 1. The 12th pin of the transceiver U5 is divided into two paths, one path is connected to the resistor R19, and the other path is connected to the fuse F2 through the resistor R18. The electrostatic protector TVS1 is connected between the 12th pin and the 13th pin of the transceiver U5. The fuse F1 is divided into two paths, one path is connected to the gas venting pipe GDT1, and the other path is connected to the resistor R111. The fuse F2 is connected to the gas venting pipe GDT2. The gas venting pipe GDT1 and the gas venting pipe GDT2 are connected to each other. The RS323 transceiver circuit includes a transceiver U21.

3. The multi-fuel internal combustion engine monitoring system according to claim 1, characterized in that The driving module includes a driving chip U20, wherein the first pin of the driving chip U20 is connected to the 44th pin of the main control chip U1, the second pin of the driving chip U20 is connected to the 36th pin of the main control chip U1, the third pin of the driving chip U20 is connected to the 34th pin of the main control chip U1, the fourth pin of the driving chip U20 is connected to the 33rd pin of the main control chip U1, the fifth pin of the driving chip U20 is connected to the 27th pin of the main control chip U1, the sixth pin of the driving chip U20 is connected to the 28th pin of the main control chip U1, the seventh pin of the driving chip U20 is connected to the 26th pin of the main control chip U1, and the The 8th pin of the driver chip U20 is connected to the 3rd pin of the photocoupler U6, the 11th pin and the 12th pin of the driver chip U20 are simultaneously connected to the 4th pin of the relay K6, the 13th pin of the driver chip U20 is connected to the 4th pin of the relay K3, the 14th pin of the driver chip U20 is connected to the 4th pin of the relay K4, the 15th pin of the driver chip U20 is connected to the 4th pin of the relay K2, the 16th pin of the driver chip U20 is connected to the 4th pin of the relay K5, the 17th pin of the driver chip U20 is connected to the 4th pin of the relay K1, and the 18th pin of the driver chip U20 is connected to the 4th pin of the relay K7.

4. The multi-fuel internal combustion engine monitoring system according to claim 1, characterized in that The warning module includes a buzzer J4, a light-emitting diode LED2, a light-emitting diode LED3 and a display screen P3. The 78th pin of the main control chip U1 is connected to the cathode of the light-emitting diode LED2, the anode of the light-emitting diode LED2 is connected to the resistor R20, the 79th pin of the main control chip U1 is connected to the cathode of the light-emitting diode LED3, the anode of the light-emitting diode LED3 is connected to the resistor R21, the 25th pin of the main control chip U1 is connected to the 3rd pin of the display screen P3 through the resistor R32, the 24th pin of the main control chip U1 is connected to the 2nd pin of the display screen P3 through the resistor R33, the 50th pin of the main control chip U1 is connected to the 1st pin of the transistor Q11 through the resistor R69, the 2nd pin of the transistor Q11 is grounded, the resistor R79 is connected between the 1st pin and the 2nd pin of the transistor Q11, and the 3rd pin of the transistor Q11 is connected to the buzzer J4.

5. The multi-fuel internal combustion engine monitoring system according to claim 1, characterized in that The main control chip U1 is connected to a positioning module, and the positioning module includes a locator U8, wherein the 18th pin of the locator U8 is connected to the 84th pin of the main control chip U1, the 9th pin of the locator U8 is connected to the 69th pin of the main control chip U1, the 5th pin of the locator U8 is connected to the 70th pin of the main control chip U1, the 3rd pin of the locator U8 is connected to the 41st pin of the main control chip U1 through a resistor R23, and the 2nd pin of the locator U8 is connected to the 42nd pin of the main control chip U1 through a resistor R31.

6. The multi-fuel internal combustion engine monitoring system according to claim 1, characterized in that The storage module includes a ferroelectric memory U10 and a flash memory U7, wherein the first pin of the flash memory U7 is connected to the 109th pin of the main control chip U1, the 7th pin of the flash memory U7 is connected to the 108th pin of the main control chip U1, the 8th pin of the flash memory U7 is connected to the 105th pin of the main control chip U1, the 9th pin of the flash memory U7 is connected to the 110th pin of the main control chip U1, the 15th pin of the flash memory U7 is connected to the 106th pin of the main control chip U1, and the 16th pin of the flash memory U7 is connected to the 107th pin of the main control chip U1. The 6th pin of the ferroelectric memory U10 is divided into two paths, one path is connected to the 73rd pin of the main control chip U1, and the other path is connected to the resistor R29. The 5th pin of the ferroelectric memory U10 is divided into two paths, one path is connected to the 74th pin of the main control chip U1, and the other path is connected to the resistor R30.

7. The multi-fuel internal combustion engine monitoring system according to claim 1, characterized in that The main control chip U1 is connected to a communication module U2 and a voice module M1, the third pin of the communication module U2 is connected to the 16th pin of the main control chip U1, the fourth pin of the communication module U2 is connected to the 15th pin of the main control chip U1, the fifth pin of the communication module U2 is connected to the third pin of the transistor Q1, the first pin of the transistor Q1 is connected to the 57th pin of the main control chip U1, the sixth pin of the communication module U2 is connected to the 59th pin of the main control chip U1, and the seventh pin of the communication module U2 is connected to the 58th pin of the main control chip U1; the first pin of the voice module M1 is connected to the 8th pin of the main control chip U1, the second pin of the voice module M1 is connected to the 7th pin of the main control chip U1, the 12th pin of the voice module M1 is divided into two paths, one path is connected to the 68th pin of the main control chip U1, and the other path is connected to the resistor R106, and the 17th pin and the 18th pin of the voice module M1 are respectively connected to the speaker P1.

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