High power automatic transmission expansion conversion control device, module and equipment

Abstract

The embodiment of the application relates to the field of electrical control, and provides a high-power automatic gearbox expansion conversion control device, a module and equipment, the high-power automatic gearbox expansion conversion control device comprises a power supply circuit, a main control circuit, a CAN communication circuit, a signal input circuit, a signal output circuit and a signal output short-circuit detection circuit; the main control circuit is connected with the communication circuit, the signal input circuit, the signal output circuit and the signal output short-circuit detection circuit; and the power supply circuit supplies power to the main control circuit, the CAN communication circuit, the signal input circuit, the signal output circuit and the signal output short-circuit detection circuit. Information between a CAN bus and an automatic gearbox electric control system can be transmitted through the high-power automatic gearbox expansion conversion control device, part of input and output information does not need to be shielded, and the reliability of the gearbox electric control system is improved.

Description

Technical Field

[0001] This application relates to the field of electrical control technology, specifically to a high-power automatic transmission extended conversion control device, module, and equipment. Background Technology

[0002] High-power hydraulic automatic transmissions are products that integrate mechanical, electrical, and hydraulic systems. They are complex and highly integrated, primarily used in wheeled special vehicles. The electronic control system, a crucial component of the automatic transmission, is responsible for controlling the opening and closing of valves and oil passages within the transmission, thereby enabling gear shifting. The transmission's electronic control system interacts with the vehicle and engine to correctly determine the timing of gear shifts.

[0003] Currently, the information data of the automatic transmission electronic control system can only be exchanged with the vehicle through the CAN bus, and it does not have hard-wired input and output functions. When faced with the low integration of the vehicle's electrical system and the inability of all information to be transmitted via the bus, it is often necessary to shield some input and output information. This will cause the transmission electronic control system to lose its protection function for the mechanical structure of the transmission and the occupants, and reduce the reliability of the transmission electronic control system. Summary of the Invention

[0004] This application provides a high-power automatic transmission expansion conversion control device, module, and equipment, which can transmit information between the CAN bus and the automatic transmission electronic control system without shielding some input and output information, thereby improving the reliability of the transmission electronic control system.

[0005] A first aspect of this application provides a high-power automatic transmission extended conversion control device, characterized in that the high-power automatic transmission extended conversion control device includes: a power supply circuit, a main control circuit, a CAN communication circuit, a signal input circuit, a signal output circuit, and a signal output short-circuit detection circuit. The main control circuit is connected to the communication circuit, the signal input circuit, the signal output circuit, and the signal output short-circuit detection circuit. The power supply circuit supplies power to the main control circuit, the CAN communication circuit, the signal input circuit, the signal output circuit, and the signal output short-circuit detection circuit.

[0006] The main control circuit is used to transmit information data of the automatic transmission electronic control system and control commands sent by the CAN bus between the CAN communication circuit and the CAN bus.

[0007] The main control circuit is used to detect whether there is a short circuit in the signal output circuit through the signal output short circuit detection circuit.

[0008] The main control circuit is used to receive information data from the automatic transmission electronic control system through the signal input circuit;

[0009] The main control circuit is used to send control commands received from the CAN bus to the automatic transmission electronic control system via the signal output circuit.

[0010] In one possible implementation, the signal input circuit, signal output circuit, and signal output short-circuit detection circuit are isolated and protected by optocoupler isolation circuits for anti-interference processing.

[0011] In one possible implementation, the signal input circuit includes eight signal input ports, and the signal output circuit includes eight signal output ports.

[0012] In one possible implementation, the main control circuit is specifically used for:

[0013] The short-circuit detection circuit receives the signal output signal when detecting the signal output circuit.

[0014] The presence of a short circuit in the signal output circuit is determined based on the detection signal.

[0015] In one possible implementation, after detecting a short circuit in the signal output circuit via the signal output short-circuit detection circuit, the main control circuit is further configured to:

[0016] The abnormal factors causing the short circuit in the signal output circuit are determined based on the detected signal;

[0017] The abnormal factors and the short-circuit status information of the signal output circuit are transmitted to the CAN bus through the CAN communication circuit.

[0018] In one possible implementation, the main control circuit is further used for:

[0019] When an abnormal state is detected in the current CAN bus, information is transmitted between the CAN communication circuit and the redundant CAN bus.

[0020] In one possible implementation, the CAN communication circuit communicates with the redundant CAN bus at a baud rate of 250kbps and a transmission period of 50ms.

[0021] In one possible implementation, the power supply circuit includes a filtering module, a voltage regulator module, and a protection module, wherein the output terminal of the voltage regulator module is connected to the input terminal of the filtering module, and the protection module is disposed between the voltage regulator module and the filtering module, and the protection module is used to provide overvoltage protection and overcurrent protection for the power supply circuit.

[0022] A second aspect of this application provides a high-power automatic transmission extension conversion control module, including a circuit board and a high-power automatic transmission extension conversion control device as described in any one of the first aspects, wherein the high-power automatic transmission extension conversion control device is disposed on the circuit board.

[0023] A third aspect of this application provides a high-power automatic transmission extension conversion control device, including a housing and a high-power automatic transmission extension conversion control module as described in the second aspect, wherein the high-power automatic transmission extension conversion control module is disposed inside the housing. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This application provides a schematic diagram of the structure of a high-power automatic transmission extended conversion control device. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0028] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0029] To better understand the high-power automatic transmission extended switching control device provided in this application embodiment, a brief introduction to the application scenarios of the high-power automatic transmission extended switching control device is given below. The high-power automatic transmission extended switching control device can be used for information exchange and transmission between the automatic transmission electronic control system and the vehicle control system. The high-power hydraulic automatic transmission is a product integrating mechanical, electrical, and hydraulic systems; it is complex and highly integrated, and is mainly used in wheeled special vehicles. As an important component of the automatic transmission, the electronic control system is responsible for controlling the opening and closing of the internal valve bodies and oil passages of the transmission, thereby realizing gear shifting; the transmission electronic control system interacts with the vehicle and engine to make correct judgments on the timing of gear shifts.

[0030] Currently, the information data of the automatic transmission electronic control system can only be exchanged with the vehicle through the CAN bus, and it does not have hard-wired input and output functions. When faced with the low integration of the vehicle's electrical system and the inability of all information to be transmitted via the bus, it is often necessary to shield some input and output information. This will cause the transmission electronic control system to lose its protection function for the mechanical structure of the transmission and the occupants, and reduce the reliability of the transmission electronic control system.

[0031] To address the aforementioned issues, this application provides a high-power automatic transmission extension conversion control device. Therefore, information can be transmitted between the CAN bus and the automatic transmission electronic control system through the high-power automatic transmission extension conversion control device without shielding some input and output information, thereby improving the reliability of the transmission electronic control system.

[0032] Please see Figure 1 , Figure 1 This application provides a schematic diagram of the structure of a high-power automatic transmission extended switching control device. For example... Figure 1 As shown, the device includes: a power supply circuit 1, a main control circuit 2, a CAN communication circuit 3, a signal input circuit 4, a signal output circuit 5, and a signal output short-circuit detection circuit 6. The main control circuit 2 is connected to the communication circuit, the signal input circuit 4, the signal output circuit 5, and the signal output short-circuit detection circuit 6. The power supply circuit 1 supplies power to the main control circuit 2, the CAN communication circuit 3, the signal input circuit 4, the signal output circuit 5, and the signal output short-circuit detection circuit 6.

[0033] The main control circuit 2 is used to transmit information data of the automatic transmission electronic control system and control commands sent by the CAN bus to the CAN bus via the CAN communication circuit 3.

[0034] The main control circuit 2 is used to detect whether there is a short circuit in the signal output circuit 5 through the signal output short circuit detection circuit 6.

[0035] The main control circuit 2 is used to receive information data from the automatic transmission electronic control system through the signal input circuit 4;

[0036] The main control circuit 2 is used by the signal output circuit 5 to send control commands received from the CAN bus to the automatic transmission electronic control system.

[0037] In one possible implementation, the signal input circuit 4, the signal output circuit 5, and the signal output short-circuit detection circuit 6 are isolated and protected by optocoupler isolation circuits for anti-interference processing.

[0038] The high-power automatic transmission expansion conversion control unit has 8 built-in inputs (6 digital inputs and 2 analog inputs) and 8 outputs (4 relay outputs and 4 digital outputs), providing ample input and output options for the matched vehicle models. To address potential CAN network failures, the converter supports dual-redundant CAN buses; if one channel fails, the other can be used for communication. It also includes 4 digital output and 4 relay drive diagnostic channels. Overload or short circuit issues on the output channels will trigger real-time error alerts via the CAN network, facilitating subsequent troubleshooting.

[0039] Specifically, the internal circuit board of the high-power automatic transmission conversion control device adopts a multi-layer board design. Compared with a single-layer circuit board, the multi-layer board is smaller in size while achieving the same function, which can reduce the size of the metal protective shell and achieve the purpose of miniaturization and weight reduction.

[0040] In one possible implementation, the signal input circuit 4 includes 8 signal input ports, and the signal output circuit 5 includes 8 signal output ports.

[0041] In one possible implementation, the main control circuit 2 is specifically used for:

[0042] The short-circuit detection circuit 6 receives the detection signal when it detects the signal output circuit 5; and determines whether there is a short circuit in the signal output circuit 5 based on the detection signal.

[0043] Specifically, the judgment can be made based on the signal level value in the detection signal. If it is high, a short circuit is considered to exist; if it is low, a short circuit does not exist.

[0044] In one possible implementation, after the signal output circuit 5 is detected to be short-circuited by the signal output short-circuit detection circuit 6, the main control circuit 2 is further configured to:

[0045] The abnormal factors causing the short circuit in the signal output circuit 5 are determined based on the detection signal; the abnormal factors and the short circuit status information of the signal output circuit 5 are transmitted to the CAN bus through the CAN communication circuit 3.

[0046] The detection signal can be waveform identified to determine its waveform type, and the anomaly can be identified based on the waveform type. Since different anomalies will cause different waveforms in the detection signal, the anomaly can be determined based on the waveform type. A general waveform identification method can be used to identify the waveform type of the detection signal. After receiving the anomaly information and the short-circuit status information of signal output circuit 5, the CAN bus sends it to the vehicle control module according to its corresponding destination address for further processing.

[0047] In one possible implementation, the main control circuit 2 is further used for:

[0048] When an abnormal state is detected in the current CAN bus, information is transmitted between the CAN communication circuit 3 and the redundant CAN bus.

[0049] Specifically, in response to the possibility of CAN network failure, the high-power automatic transmission extended conversion control device supports dual redundant CAN buses. If one CAN bus fails, the other CAN bus can be used to achieve communication.

[0050] In one possible implementation, the baud rate of the CAN communication circuit 3 when communicating with the redundant CAN bus is 250kbps, the transmission period is 50ms, and the transmission identifier and reception identifier are set to 0x500 and 0x501, respectively.

[0051] In one possible implementation, the power supply circuit 1 includes a filtering module, a voltage regulator module, and a protection module. The output terminal of the voltage regulator module is connected to the input terminal of the filtering module. The protection module is disposed between the voltage regulator module and the filtering module and is used to provide overvoltage protection and overcurrent protection for the power supply circuit 1.

[0052] In one specific implementation, this application provides another specific solution for a high-power automatic transmission extended conversion control device, as follows:

[0053] The main control circuit 2 uses a domestically produced 32-bit main chip. The signal acquisition circuit, signal output circuit 5, and signal output short circuit detection circuit 6 all use optocouplers for isolation protection and anti-interference processing. Data is sent to the CAN bus and control commands are received through the CAN communication circuit 3.

[0054] Without increasing the load rate of the vehicle's power CAN network bus, the high-power automatic transmission extended conversion control device incorporates a 120-ohm resistor and innovatively uses an internal CAN network to interact with the TCU (Telematics Control Unit). Custom CAN communication messages are used, with a baud rate of 250kbps, a transmission period of 50ms, and transmit and receive IDs set to 0x500 and 0x501 respectively, enabling information exchange between the converter and the TCU.

[0055] The high-power automatic transmission expansion and conversion control unit features 8 built-in inputs (6 digital inputs and 2 analog inputs) and 8 outputs (4 relay outputs and 4 digital outputs), providing ample input and output options for the matched vehicle models. To address potential CAN network failures, the unit supports dual-redundant CAN buses; if one CAN bus fails, the other can be used for communication. It also includes 4 digital output and 4 relay drive diagnostic channels. Overload or short circuit issues in the output channels will trigger real-time error messages via the CAN network, facilitating subsequent troubleshooting.

[0056] The internal circuit board of the high-power automatic transmission expansion conversion control device adopts a multi-layer board design. Compared with a single-layer board, the multi-layer board is smaller in size while achieving the same function, which can reduce the size of the metal protective shell and achieve the purpose of miniaturization and weight reduction.

[0057] The development of an automatic transmission extension conversion controller has improved the automatic transmission electronic control system, enabling it to not only support CAN bus output but also hard-wired signal input and output. When the matched vehicle model lacks CAN bus communication capabilities, the extension conversion controller can convert between CAN bus and hard-wired signals, thus enhancing the compatibility of the automatic transmission electronic control system.

[0058] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0059] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0060] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0061] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0062] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A high-power automatic transmission extended conversion control device, characterized in that, The high-power automatic transmission extended conversion control device includes: a power supply circuit, a main control circuit, a CAN communication circuit, a signal input circuit, a signal output circuit, and a signal output short-circuit detection circuit. The main control circuit is connected to the communication circuit, the signal input circuit, the signal output circuit, and the signal output short-circuit detection circuit. The power supply circuit provides power to the main control circuit, the CAN communication circuit, the signal input circuit, the signal output circuit, and the signal output short-circuit detection circuit. The main control circuit is used to transmit information data of the automatic transmission electronic control system and control commands sent by the CAN bus between the CAN communication circuit and the CAN bus. The main control circuit is used to detect whether there is a short circuit in the signal output circuit through the signal output short circuit detection circuit, including: The short-circuit detection circuit receives the signal output signal when detecting the signal output circuit. Determine whether a short circuit exists in the signal output circuit based on the detection signal; After detecting a short circuit in the signal output circuit using the signal output short circuit detection circuit, the main control circuit is also used for: The abnormal factors causing the short circuit in the signal output circuit are determined based on the detected signal; The abnormal factors and the short-circuit status information of the signal output circuit are transmitted to the CAN bus through the CAN communication circuit. The main control circuit is used to receive information data from the automatic transmission electronic control system through the signal input circuit; The main control circuit is used to send control commands received from the CAN bus to the automatic transmission electronic control system via the signal output circuit.

2. The high-power automatic transmission extended conversion control device according to claim 1, characterized in that, The signal input circuit, signal output circuit, and signal output short-circuit detection circuit are isolated and protected by optocoupler isolation circuits for anti-interference processing.

3. The high-power automatic transmission extended conversion control device according to claim 2, characterized in that, The signal input circuit includes 8 signal input ports, and the signal output circuit includes 8 signal output ports.

4. The high-power automatic transmission extended conversion control device according to claim 1, characterized in that, The main control circuit is also used for: When an abnormal state is detected in the current CAN bus, information is transmitted between the CAN communication circuit and the redundant CAN bus.

5. The high-power automatic transmission extended conversion control device according to any one of claims 1-4, characterized in that, The CAN communication circuit communicates with the redundant CAN bus at a baud rate of 250kbps and a transmission period of 50ms.

6. The high-power automatic transmission extended conversion control device according to claim 5, characterized in that, The power supply circuit includes a filtering module, a voltage regulator module, and a protection module. The output terminal of the voltage regulator module is connected to the input terminal of the filtering module. The protection module is located between the voltage regulator module and the filtering module and is used to provide overvoltage protection and overcurrent protection for the power supply circuit.

7. A high-power automatic transmission extended conversion control module, characterized in that, It includes a circuit board and a high-power automatic transmission extension conversion control device as described in any one of claims 1-6, wherein the high-power automatic transmission extension conversion control device is disposed on the circuit board.

8. A high-power automatic transmission extended conversion control device, characterized in that, It includes a housing and a high-power automatic transmission extension conversion control module as described in claim 7, wherein the high-power automatic transmission extension conversion control module is disposed inside the housing.

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