An embedded drive control system for automobiles and electric vehicles

Abstract

An embedded drive control system for automobiles and electric vehicles, including two accelerator pedal position sensors and control units arranged at the accelerator pedal position, a wireless transmission module arranged on the sensor and its control unit, a main control unit arranged somewhere in the engine compartment, a wireless receiving module of the main control unit arranged somewhere in the engine compartment, two execution units arranged at the throttle position of the engine intake system, and wires or CAN lines connected between the above components. The present invention proposes an overall architecture of an embedded drive control system for automobiles and electric vehicles, including three forms: open-loop, partial open-closed-loop fusion, and closed-loop. Compared with existing structures, the patent of the present invention is more compact, safer, and more accurate. It integrates a wireless transmission module, has stronger fault tolerance, increases fault handling capabilities, effectively improves the overall performance of the automobile, and enables the automobile to adapt to road conditions and usage requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile electronic control and relates to an embedded drive control system suitable for automobiles and electric vehicles. Background Art

[0002] The accelerator pedal position information is one of the basic input signals of the engine electronic fuel injection system and plays an important role in engine control. The accelerator pedal position information is increasingly indispensable for engine performance optimization and vehicle performance improvement. Therefore, it is an important function of the accelerator pedal position sensor to ensure that the accelerator pedal position information is accurately and timely provided to the engine control unit. At present, general automobile companies use two accelerator pedal position sensors to ensure the above functions. However, the working environment of the sensor on the car is harsh, and coupled with the defects or quality problems of the sensor itself, it is inevitable that there will be various problems that cause the accelerator pedal position sensor itself or its signal to have problems. If only one accelerator pedal position sensor itself or its signal has problems, there is still another accelerator pedal position sensor that can work normally. At this time, the engine control unit can still obtain the signal of one accelerator pedal position sensor. According to the existing practice, the engine control unit also adopts the fault mode at this time to limit the engine power or speed, so that the car enters the limp fault mode, which seriously reduces the overall performance of the car such as the power and fuel economy of the car. On the other hand, if there are problems with both accelerator pedal position sensors themselves or their signals, at this time, whether the driver steps on the accelerator pedal can no longer be obtained by the engine control unit, and the engine control unit cannot effectively perform fuel injection and ignition control. So far, existing methods cannot address this limitation of automobiles.

[0003] Therefore, the method of using two accelerator pedal position sensors has been greatly improved compared to the method of using a single accelerator pedal position sensor, effectively avoiding the fault tolerance when one accelerator pedal position sensor itself or its signal has problems. However, the current two-way accelerator pedal position sensor method still has a failure mode when one sensor and its circuit have problems, which still has a serious impact on the overall performance of the car and greatly restricts the freedom of the car. In addition, it has caused certain usage difficulties for car users, not to mention the situation when both accelerator pedal position sensors and their signals have problems. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention proposes an embedded drive control system suitable for automobiles and electric vehicles, and innovatively proposes an overall architecture of the embedded drive control system for automobiles and electric vehicles, including three main forms: open-loop type, partial open-loop and partial closed-loop fusion type, and closed-loop type. In terms of structure, the accelerator pedal position sensor and its control unit are integrated into one or two accelerator pedal position sensors and one control unit are integrated into one, and the information transmission mainly uses the CAN network. Compared with the existing methods, the accelerator pedal position embedded sensing system proposed in the patent of the present invention is more compact, more reliable, and safer, and has faster information processing speed and higher accuracy. It also integrates a wireless transmission module and has stronger fault tolerance. Under the condition of controllable cost, it can effectively increase the automobile fault handling capability and more effectively improve the overall performance of the automobile, so that the automobile can adapt to a wide range of road conditions and driving and riding needs.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An embedded drive control system suitable for automobiles and electric vehicles, characterized in that it includes two-way accelerator pedal position sensors and control units arranged at the accelerator pedal position in the automobile cab, a wireless transmission module arranged on the sensor and its control unit, a main control unit arranged somewhere in the engine compartment, a wireless receiving module of the main control unit arranged somewhere in the engine compartment, two execution units arranged at the throttle position in the engine intake system, and the sensors and their electronic control units at the execution units are connected with the wires or CAN lines arranged between the above components. The two-way accelerator pedal position sensors collect signals from the accelerator pedal position sensors, and the collected signals are transmitted to their control units for processing. The processed signals are transmitted to the main control unit or its wireless receiving module via the CAN line or wireless module, and the information processed by the main control unit is then transmitted to the two-way execution units via the CAN line to perform actuator actions. The actions of the actuators are collected and processed by the throttle position sensor and its control unit, and then transmitted through the CAN line to the corresponding sensor control unit and the main control unit to analyze and judge the signals.

[0007] Among them, the two-way accelerator pedal position sensors and their control units are modular, and there are mainly two forms. One is that an accelerator pedal position sensor and its control unit are a module, and then connected to the network through the CAN line; the other is that the two accelerator pedal position sensors are independent, and then share a control unit, and then connected to the network through the CAN line.

[0008] Among them, the two accelerator pedal position sensors and their control unit modules can be integrated with a wireless transmission module, which can also send out the processed sensor signal when an abnormality occurs on the CAN line.

[0009] Among them, the execution unit is also set to two paths, and each execution unit has two throttle position sensors, whose function is to ensure the reliability of the control system.

[0010] Among them, the throttle position sensor and its control unit are modular, and their processed signals are sent to the CAN network.

[0011] Among them, the throttle position sensor and its control unit are modular, and there are mainly two forms. One is that a throttle position sensor and its control unit are a module, and then connected to the network through the CAN line; the other is that two throttle position sensors are independent of each other, and then share a control unit, and then connected to the network through the CAN line.

[0012] Among them, the main electronic control unit collects the signal of the accelerator pedal position sensor transmitted through the CAN line or the wireless receiving module, analyzes and calculates it, obtains the instruction that needs to be executed by the execution unit, and transmits the instruction to the execution unit through the CAN network for corresponding execution action.

[0013] The CAN network transmits signals that have been processed by the corresponding control unit and can be used directly for calculation and processing, and these signals are also used to determine whether there are problems with the corresponding sensors or their circuits.

[0014] Furthermore, the sensor module is not limited to one form, and the accompanying drawings will show at least two types.

[0015] Furthermore, the electronic control unit of the sensor is the control core of the embedded system information processing, which processes the sensor signal and transmits the processed signal to the CAN network. The main electronic control unit is the control core of the execution end, which forms a control instruction after calculation and processing, and starts an execution command in the two execution units.

[0016] Furthermore, the modular throttle position sensor and its control unit may be integrated with a wireless transmission module to enhance its information transmission capability and improve transmission reliability.

[0017] Furthermore, the scope of this patent is not only for traditional fuel vehicles, but also includes electric vehicles, smart vehicles and driverless vehicles.

[0018] The beneficial effects of the present invention are as follows: the embedded drive control system for automobiles and electric vehicles of the present invention uses an embedded system to modularize the accelerator pedal position sensor, and transmits information through the CAN network. If necessary, the signal can also be sent out through a wireless transmission module. The same processing is done on the execution end, which effectively eliminates the problem of entering the fault mode when a sensor fails, which is easy to occur in the existing method. When there is a problem with the sensor line, it can also be transmitted wirelessly to improve the reliability of the system. After the execution end also adopts a dual-path, the reliability of the system can be increased, so that the accelerator pedal position signal can be reliably transmitted to the main electronic control unit, so that the efficient control of the engine or electric vehicle is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 Schematic diagram of open-loop automotive and electric vehicle embedded drive control systems.

[0021] Figure 2 Schematic diagram of closed-loop automotive and electric vehicle embedded drive control systems.

[0022] Figure 3 Schematic diagram of closed-loop automotive and electric vehicle embedded drive control systems with wireless transmitter and receiver modules.

[0023] Figure 4 Schematic diagram of APS-coupled closed-loop vehicle and electric vehicle embedded drive control system. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings.

[0025] [Example 1]

[0026] like Figure 3As shown, the embedded driving control system of the automobile and electric vehicle includes two accelerator pedal position sensors at the accelerator pedal position and their control units, namely APS1 and APS2 and their common electronic control unit ECU1 / GPRS / RF, which includes a wireless transmission module GPRS / RF, a main control unit ECU2 / GPRS / RFID arranged somewhere in the engine compartment, which includes a wireless receiving module GPRS / RFID, two execution units Actuator1, Actuator2 and TPS1, TPS2 arranged at the throttle position in the engine intake system, and wires or CAN lines arranged between the above components. The two accelerator pedal position sensors APS1 and APS2 collect signals from the accelerator pedal position sensors, and the collected signals are transmitted to their control units ECU1 / GPRS / RF for processing. The processed signals are transmitted to the main control unit or its wireless receiving module ECU2 / GPRS / RFID through the CAN line or wireless module. The information processed by the main control unit ECU2 / GPRS / RFID is then transmitted to the two execution units through the CAN line to perform the actions of the actuators Actuator1 and Actuator2. The actions of actuators Actuator1 and Actuator2 are collected and processed by the throttle position sensor and its control unit, namely TPS1 and TPS2, and then transmitted through the CAN line to the corresponding sensor control unit and the main control unit for signal analysis and judgment.

[0027] like Figure 3 As shown, the embedded drive control system of the automobile and electric vehicle adopts the second form of modularization, that is, the two accelerator pedal position sensors APS1 and APS2 are independent, and then share a control unit ECU1 / GPRS / RF, and then the GPRS / RF wireless transmission module connects the information to the network through the CAN line or sends it to the wireless receiving module GPRS / RFID in the main control unit ECU2 / GPRS / RFID.

[0028] The actuator units Actuator1 and Actuator2 are also set to two paths, and each actuator unit has two throttle position sensors TPS1 and TPS2, which are used to ensure the reliability of the control system. The throttle position sensor and its control unit are modular, and the processed signal will be sent to the CAN network. The throttle position sensor and its control unit TECU / TPS are modular. This example adopts the first form, that is, a throttle position sensor and its control unit are a module, and then connected to the network through the CAN line.

[0029] The main electronic control unit is ECU2 / GPRS / RFID, which collects the signals of the accelerator pedal position sensors APS1 and APS2 transmitted through the CAN line or the wireless receiving module, performs analysis and calculation processing, obtains the instructions that need to be executed by the execution unit, and transmits the instructions to the execution units Actuator1 and Actuator2 through the CAN network for corresponding execution actions. The CAN network in this embodiment will transmit signals that have been processed by the corresponding control unit and can be directly used for calculation processing, and these signals will also be used to determine whether there are problems with the corresponding sensors or their lines.

[0030] The sensor electronic control unit ECU1 is the control core of the embedded system information processing, which processes the signals of the sensors APS1 and APS2 and transmits the processed signals to the CAN network. The main electronic control unit ECU2 is the control core of the execution end, which forms control instructions after calculation and processing, and starts an execution command in the two execution units Actuator1 and Actuator2.

[0031] The modular throttle position sensor and its control units TECU / TPS1 and TECU / TPS2 can be integrated with a wireless transmission module to improve its information transmission capability and transmission reliability.

[0032] [Example 2]

[0033] like Figure 1 As shown in the figure, the open-loop automobile and electric vehicle embedded drive control system consists of two accelerator pedal position sensors and their shared electronic control unit modules, which are then connected to the network through the CAN line. At the execution end, there are only two execution units Actuator1 and Actuator2 and their TPS1 and TPS2.

[0034] [Example 3]

[0035] like Figure 2 As shown, compared with embodiment 2, the difference is that the two sensors TPS1 and TPS2 at the execution end are provided with their corresponding TECU1 and TECU2.

[0036] [Example 4]

[0037] like Figure 4 As shown, compared with embodiment 1, the difference is that the accelerator pedal position sensors APS1 and APS2 at the sensor signal input end are integrated with the electronic control unit AECU1 / GPRS / RF.

[0038] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An embedded drive control system for automobiles and electric vehicles, comprising two accelerator pedal position sensors and control units at the accelerator pedal position, a wireless transmitting module arranged on the sensor and the control unit, a main control unit, a wireless receiving module in the main control unit, two execution units arranged at the throttle position in the engine intake system, sensors at the execution units and electronic control units, sensors at the execution units and electronic control units, and wires or CAN lines connected between the above components, characterized in that : Two accelerator pedal position sensors are connected to their control units, the sensor control unit is connected to the main control unit or its wireless receiving module via a CAN line or its wireless module, the information processed by the main control unit is then transmitted via a CAN line and connected to the two execution units, the action of the actuator is connected to the throttle position sensor and its control unit, the corresponding sensor control unit and the main control unit via a CAN line, forming an information path; The two-way accelerator pedal position sensor and its control unit are modularized and have two forms: one is that one accelerator pedal position sensor and its control unit are a module and then connected to the network through the CAN line; the other is that the two accelerator pedal position sensors are independent and share a control unit, and then connected to the network through the CAN line; The execution unit is also set to two channels, and each execution unit has two throttle position sensors, which are used to ensure the reliability of the control system; The throttle position sensor and its control unit are modular, and there are two main forms: one is that a throttle position sensor and its control unit are a module, and then connected to the network through the CAN line; the other is that two throttle position sensors are independent of each other, and then share a control unit, and then connected to the network through the CAN line; The overall architecture of embedded drive control systems for automobiles and electric vehicles, including three main forms: open-loop, partial open-loop and partial closed-loop fusion, and closed-loop; The open-loop type is: two accelerator pedal position sensors and their shared electronic control unit form a module, and then access the network through the CAN line. At the execution end, there are only two execution units and their throttle position sensors; The closed loop type is different from the open loop type in that the two valve position sensors at the execution end are each provided with its corresponding control unit; The local open-loop and local closed-loop fusion types are: different from the open-loop type in that the accelerator pedal position sensor and its electronic control unit are integrated together.

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