Electronic control system of motorcycle

Abstract

The invention discloses an electronic control system of a motorcycle. The electronic control system comprises an electronic controller, a signal output end, an outer end module and a load end, the electronic controller comprises a main control chip, a signal detection circuit, an LIN communication circuit, a CAN communication circuit, a monitoring circuit, a driving circuit and an emergency circuit; the signal output end is connected with the input end of the signal detection circuit, and the output end of the signal detection circuit is connected with the main control chip; the output end of the outer end module is connected with the main control chip through the LIN communication circuit and the CAN communication circuit, the driving end of the main control chip is connected with the driving circuit, the output end of the main control chip is connected with the emergency circuit, and the control end of the emergency circuit is connected with the driving circuit; one end of the monitoring circuit is connected with the driving circuit, the other end of the monitoring circuit is connected with the main control chip, and the control end of the driving circuit is connected with the load end. According to the electronic control system of the motorcycle provided by the embodiment of the invention, faults can be quickly and accurately positioned by continuously monitoring the operation condition of the system.

Description

Technical Field

[0001] The invention relates to the technical field of motorcycle control, in particular to an electronic control system for a motorcycle. Background Art

[0002] In real life, there are more and more motorcycle users. Most of the control methods for motorcycle lights or locks are determined by hardware architecture methods such as buttons, cables, and relays to determine the control logic and connection control. This control method requires the use of a large number of wiring harnesses during production, and the definition of complex connections such as switches and wiring harnesses according to its logical control method, making it impossible to monitor the usage status during use and difficult to troubleshoot when problems occur.

[0003] It can be seen that how to realize the real-time monitoring of the running status of a motorcycle has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The present invention provides an electronic control system for a motorcycle, so as to solve the technical problems that the use status of the motorcycle cannot be monitored during use and the fault is difficult to be checked when a problem occurs, so as to achieve the effect of real-time monitoring of the running status of the motorcycle.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a motorcycle electronic control system, including 1, an electronic controller, a signal output terminal, an external terminal module and a load terminal; the electronic controller includes a main control chip, a signal detection circuit, a LIN communication circuit, a CAN communication circuit, a monitoring circuit, a drive circuit and an emergency circuit;

[0006] The signal output end is connected to the input end of the signal detection circuit, and the output end of the signal detection circuit is connected to the main control chip;

[0007] The output end of the external module is connected to the main control chip through the LIN communication circuit and the CAN communication circuit, the driving end of the main control chip is connected to the driving circuit, the output end of the main control chip is connected to the emergency circuit, and the control end of the emergency circuit is connected to the driving circuit;

[0008] One end of the monitoring circuit is connected to the driving circuit, the other end of the monitoring circuit is connected to the main control chip, and the control end of the driving circuit is connected to the load end;

[0009] The signal detection circuit is used to obtain the detection signal of the signal output end, and output the detection signal to the main control chip;

[0010] The LIN communication circuit and the CAN communication circuit are used to exchange data between the external module and the main control chip;

[0011] The main control chip drives the driving circuit to work based on the detection signal, LIN communication data and CAN communication data;

[0012] The monitoring circuit is used to monitor the working state of the driving circuit and send the working state of the driving circuit to the main control chip;

[0013] The emergency circuit is used to monitor the working state of the main control chip to ensure that the load end connected to the drive circuit works normally.

[0014] As a preferred solution, the signal output terminal includes high / low level signal output and voltage / current output.

[0015] As a preferred solution, the voltage / current output includes a plurality of different resistors and filter capacitors.

[0016] As a preferred solution, the external module includes an instrument-type display module and a gateway-type data exchange module.

[0017] As a preferred solution, the load end is an electrical device used on the motorcycle, which includes a high beam, a low beam and a horn.

[0018] As a preferred solution, the CAN communication circuit is a TJA1044 chip, and the LIN communication circuit is a TJA1021T chip.

[0019] As a preferred solution, the driving circuit adopts BTS series chips, and the BTS series chips include BTS7008, BTS7020 and BTS7200.

[0020] As a preferred solution, the motorcycle electronic control system also includes a software program area, and the CAN communication circuit is connected to the software program area.

[0021] As a preferred solution, the software program area includes a bootloader program area, an original system program area and a new system program area.

[0022] As a preferred solution, the signal detection circuit includes a power supply, multiple resistors, multiple capacitors and a diode.

[0023] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0024] (1) The control system can continuously monitor the system operation status through the main control chip, signal detection circuit, LIN communication circuit, CAN communication circuit, monitoring circuit, drive circuit and emergency circuit inside the electronic controller, which can help customers quickly and accurately locate faults and greatly improve customer experience;

[0025] (2) The control system can also upgrade the system through the software program area, reducing the possibility of damage to the motorcycle control system device due to upgrade failure, reducing wiring harnesses, using software to define functions, simplifying production, and realizing related changes in logical control functions only through software changes;

[0026] (3) Through OTA iterative optimization, the control system can add new functions based on existing hardware and can also meet customers' personalized control needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a block diagram of a motorcycle electronic control system in one embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of a motorcycle electronic control system in one embodiment of the present invention;

[0029] Figure 3 It is a circuit schematic diagram of a motorcycle electronic control system in one embodiment of the present invention;

[0030] Figure 4 is a circuit schematic diagram of signal detection in one embodiment of the present invention;

[0031] Figure 5 is a flowchart of a monitoring circuit in one embodiment of the present invention;

[0032] Figure 6 is a schematic diagram of the working process of an emergency circuit in one embodiment of the present invention;

[0033] Figure 7 It is a program structure and upgrade flow chart of a motorcycle electronic control system in one embodiment of the present invention.

[0034] Reference numerals:

[0035] Among them, 1. Electronic controller; 11. Signal monitoring circuit; 12. Main control chip; 13. LIN communication circuit; 14. CAN communication circuit; 15. Drive circuit; 16. Monitoring circuit; 17. Emergency circuit; 2. Signal output end; 3. External module; 4. Load end. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of this application, the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0038] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are only for illustrative purposes, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] An embodiment of the present invention provides a motorcycle electronic control system. For details, see Figure 1 , Figure 1 FIG. 1 is a block diagram of a motorcycle electronic control system in one embodiment of the present invention. Figure 2 The figure shows a schematic diagram of the structure of a motorcycle electronic control system in one embodiment of the present invention, including an electronic controller 1, a signal output terminal 2, an external terminal module 3 and a load terminal 4; the electronic controller 1 includes a main control chip 12, a signal detection circuit 11, a LIN communication circuit 13, a CAN communication circuit 14, a monitoring circuit 16, a drive circuit 15 and an emergency circuit 17.

[0040] The signal output terminal 2 is connected to the input terminal of the signal detection circuit 11, and the output terminal of the signal detection circuit 11 is connected to the main control chip 12; the output terminal of the external module 3 is connected to the main control chip 12 through the LIN communication circuit 13 and the CAN communication circuit 14, the driving end of the main control chip 12 is connected to the driving circuit 15, the output terminal of the main control chip 12 is connected to the emergency circuit 17, and the control end of the emergency circuit 17 is connected to the driving circuit 15; one end of the monitoring circuit 16 is connected to the driving circuit 15, and the other end of the monitoring circuit 16 is connected to the main control chip 12, and the control end of the driving circuit 15 is connected to the load terminal 4.

[0041] Signal output terminal 2 refers to the output signal of a button or sensor, which is mainly divided into two categories: high / low level signal output and voltage / current output. High / low level signal output is mainly used for state detection, switch control and data transmission in digital circuits, and its output value is based on the voltage level value. Voltage / current output is mainly used for signal amplification, filtering and other processing in analog circuits. The output voltage of the voltage output circuit is stable and less affected by the load, while the current output circuit has the advantage of long-distance transmission.

[0042] The external module 3 includes but is not limited to the following devices, such as instrument display modules, gateway data exchange modules and other control modules; the load end mainly refers to the electrical equipment used on the motorcycle, such as high beam, low beam, horn, etc.

[0043] Preferably, in this embodiment, the CAN communication circuit 14 is a TJA1044 chip, the LIN communication circuit 13 is a TJA1021T chip, and the driving circuit adopts a BTS series chip, which includes but is not limited to the following: BTS7008, BTS7020 and BTS7200.

[0044] An embodiment of the present invention provides a motorcycle electronic control system. For details, see Figure 3 , Figure 3 The figure shows a schematic circuit diagram of a motorcycle electronic control system in one embodiment of the present invention, which specifically includes a power supply circuit, an LDO circuit, a drive / current diagnosis monitoring circuit, a CAN communication circuit, a LIN communication circuit, a brake detection circuit, an MCU circuit, a key line detection circuit and an emergency low-beam protection circuit.

[0045] Specifically, LDO is a low-dropout linear regulator. The basic working principle of LDO is to use an error amplifier, a power adjustment tube (usually a MOSFET or a bipolar transistor) and some feedback elements (such as a resistor divider) to monitor and adjust the output voltage. When the output voltage deviates from the set value, the error amplifier will detect this deviation and adjust the conduction degree of the power adjustment tube accordingly, thereby changing the output voltage to return to the set value. Of course, the low-dropout linear regulator can also be a DC-DC buck converter and a linear regulator (non-LDO) that play the same role, which is not specifically limited in the embodiments of the present invention.

[0046] In this embodiment, the CAN communication circuit 14 is a TJA1044 chip, the LIN communication circuit 13 is a TJA1021T chip, and the driving circuit adopts a BTS series chip. The BTS series chips include but are not limited to the following: BTS7008, BTS7020 and BTS7200.

[0047] An embodiment of the present invention provides a motorcycle electronic control system. For details, see Figure 4 , Figure 4 Shown is a circuit schematic diagram of signal detection in one embodiment of the present invention.

[0048] exist Figure 4 In the signal detection circuit diagram in the electronic controller 1, a 5V power supply is used for power supply, and the voltage output by the resistor voltage division of the pull-up resistor R95 and the resistance value output circuit diagram in the signal output terminal 2 is further filtered by the R81 resistor and the C98 capacitor and output to the main control chip 12, wherein the D3 diode prevents external reverse input, and the C88 capacitor filters external voltage fluctuations; in the resistance value output circuit in the signal output terminal 2, a plurality of different resistors are used in series / parallel and a filter capacitor. Specifically, a specific combination of a plurality of different resistors is used to output different voltage / current values ​​of the power supply respectively. Figure 4 This is just one example used and is not specifically limited here.

[0049] Combined with the signal detection circuit 11 in the electronic controller 2 and the voltage / current output circuit in the signal output terminal 2, only three types of electronic components, namely simple resistors, capacitors and diodes, and the main control chip program are required to determine the voltage range. When the keys in the rear part are stuck and are always turned on, the use of the keys in the front part is not affected, thereby achieving accurate key switch detection and fault location.

[0050] Specifically, in this embodiment, the voltage output by a 330K parallel resistor is used to detect whether the external key circuit is connected; the voltage output by a total of 7 resistors, namely 2K, 2K, 2.7K, 4.3K, 6.8K, 12K, and 36K, is used to detect whether the key seat lock button is pressed and turned on; when the seat lock button is always turned on, the main control chip 12 determines that it is a fault based on detecting the same continuous voltage, and does not affect the use of the front part of the buttons.

[0051] An embodiment of the present invention provides a motorcycle electronic control system. For details, see Figure 5 , Figure 5 The figure shows a working flow chart of a monitoring circuit in one embodiment of the present invention.

[0052] When the electronic controller 1 works normally, the main control chip 12 controls the driving circuit 15 to work according to the set logic, and the monitoring circuit 16 determines the working state of the driving circuit 15 and transmits the working current to the main control chip 12 .

[0053] When the drive circuit 15 is detected to be in an abnormal state such as short circuit, overload, open circuit, etc., the monitoring circuit 16 will give priority to controlling the output of the drive circuit and send the abnormal drive state to the main control chip 12. The main control chip 12 will control the drive output and record the abnormal state.

[0054] Specifically, when the driving circuit 15 is in a short-circuit state, the monitoring circuit 16 will shut down the driving output; when the driving circuit 15 is in an overload state, the monitoring circuit 16 will output a constant current according to the control logic; when the driving circuit 15 is in an open-circuit state, the monitoring circuit 16 will maintain the output according to the control logic.

[0055] In this embodiment, when the main control chip 12 receives the working current data, it will determine whether the working current meets the preset requirements. If it does not meet the requirements, it will control the drive output and record the abnormal status according to the software preset logic based on the working current.

[0056] An embodiment of the present invention provides a motorcycle electronic control system. For details, see Figure 6 , Figure 6 The figure shows a working diagram of an emergency circuit in one embodiment of the present invention.

[0057] When the electronic controller 1 receives power from ACC and wakes up to start working, the ACC in the emergency circuit 17 passes through the hardware filtering and delay of the 100 part circuit. During the delay period, JG has no output and the main control chip 12 controls and maintains the output DSEL1 to the 101 part circuit, ensuring that there is no emergency output to control the low beam drive when the electronic controller wakes up and starts working.

[0058] When the electronic controller 1 is fully awakened to the working state, it stops outputting DSEL1 and continues to output PWM signals to the circuit 102 for processing through DO to ensure that JG has no output.

[0059] When the main control chip 12 fails to output PWM to part of the circuit 102, the emergency circuit 17 will directly output the control drive circuit to ensure that part of the load works normally in an emergency.

[0060] In this embodiment, ACC is a wake-up signal for powering the entire vehicle; JG is an output signal for low beam control, which is used to control the low beam drive chip.

[0061] DSEL1 is a control signal sent by the main control chip 12. Its main functions are: 1) it plays a delay role when the main control chip 12 is in the awakening state; 2) when receiving abnormal signals such as signal fluctuation interference from ACC, the emergency circuit cannot output the JG signal.

[0062] DO is a signal sent by the main control chip 12 when it is working normally. The modulation type of this signal is PWM. When the emergency circuit 17 detects this signal, the emergency circuit 17 cannot output the JG signal.

[0063] An embodiment of the present invention provides a motorcycle electronic control system. For details, see Figure 7 , Figure 7 Shown is a motorcycle electronic control system program structure and upgrade flow chart in one embodiment of the present invention.

[0064] The motorcycle electronic control system also includes a software program area, which is mainly divided into a bootloader program area, an original system program area and a new system program area.

[0065] When CAN communication receives the upgrade command, it exits the original system program area and enters the bootloader program area, and enters the upgrade state. CAN communication receives the new system data packet. The bootloader program will verify the data integrity of the received new program and store it in the new system program area. After receiving the data, it will reboot into the new system program area and try to start the new program.

[0066] If successful, the upgrade is successful, otherwise the bootloader program will be restarted, the original program will be restarted to run the original program area, and the upgrade failure will be returned. Through this method, the possibility of damage to the motorcycle control system device caused by the upgrade failure is reduced.

[0067] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0068] (1) The control system can continuously monitor the system operation status through the main control chip, signal detection circuit, LIN communication circuit, CAN communication circuit, monitoring circuit, drive circuit and emergency circuit inside the electronic controller, which can help customers quickly and accurately locate faults and greatly improve customer experience;

[0069] (2) The control system can also upgrade the system through the software program area, reducing the possibility of damage to the motorcycle control system device due to upgrade failure.

[0070] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0071] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A motorcycle electronic control system, characterized in that: It includes an electronic controller, a signal output terminal, an external terminal module and a load terminal; the electronic controller includes a main control chip, a signal detection circuit, a LIN communication circuit, a CAN communication circuit, a monitoring circuit, a drive circuit and an emergency circuit; The signal output end is connected to the input end of the signal detection circuit, and the output end of the signal detection circuit is connected to the main control chip; The output end of the external module is connected to the main control chip through the LIN communication circuit and the CAN communication circuit, the driving end of the main control chip is connected to the driving circuit, the output end of the main control chip is connected to the emergency circuit, and the control end of the emergency circuit is connected to the driving circuit; One end of the monitoring circuit is connected to the driving circuit, the other end of the monitoring circuit is connected to the main control chip, and the control end of the driving circuit is connected to the load end; The signal detection circuit is used to obtain the detection signal of the signal output end, and output the detection signal to the main control chip; The LIN communication circuit and the CAN communication circuit are used to exchange data between the external module and the main control chip; The main control chip drives the driving circuit to work based on the detection signal, LIN communication data and CAN communication data; The monitoring circuit is used to monitor the working state of the driving circuit and send the working state of the driving circuit to the main control chip; The emergency circuit is used to monitor the working state of the main control chip to ensure that the load end connected to the drive circuit works normally.

2. The motorcycle electronic control system according to claim 1, characterized in that: The signal output terminal includes high / low level signal output and voltage / current output.

3. The motorcycle electronic control system according to claim 1, characterized in that: The voltage / current type output includes a filter capacitor and a plurality of resistors.

4. The motorcycle electronic control system according to claim 1, characterized in that: The external modules include an instrument-type display module and a gateway-type data exchange module.

5. The motorcycle electronic control system according to claim 1, characterized in that: The load end is an electrical device used on the motorcycle.

6. The motorcycle electronic control system according to claim 1, characterized in that: The CAN communication circuit is a TJA1044 chip, and the LIN communication circuit is a TJA1021T chip.

7. The motorcycle electronic control system according to claim 1, characterized in that: The driving circuit adopts BTS series chips, and the BTS series chips include BTS7008, BTS7020 and BTS7200.

8. The motorcycle electronic control system according to claim 1, characterized in that: The motorcycle electronic control system also includes a software program area, and the CAN communication circuit is connected to the software program area.

9. The motorcycle electronic control system according to claim 8, characterized in that: The software program area includes a bootloader program area, an original system program area and a new system program area.

10. The motorcycle electronic control system according to claim 1, characterized in that: The signal detection circuit includes a power supply, a plurality of resistors, a plurality of capacitors and a diode.

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