Brake-by-wire controller system architecture and brake signal redundancy system architecture
By introducing hard-wired signal backups for the brake wheel-side controller for the drive-by-wire pedal and parking controller, the problem of brake force loss caused by CAN signal failure in traditional braking systems is solved, achieving safety redundancy and reliability of the braking system.
Patent Information
- Application Number
- CN202520401871.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Traditional brake wheel-side controllers rely on the CAN control signal of the brake domain controller, which poses a risk of failure. Existing redundancy designs cannot cover all fault modes, resulting in the loss of braking force control capability.
Hard-wire signals from the drive-by-wire pedal and parking controller are used as backups for the brake domain controller, and the signal sources for the brake wheel-side controller are increased to ensure that the brake signal can still be received when the brake domain controller fails, thus achieving safe braking.
By employing a multi-signal redundancy design, the risk of braking system failure due to a single signal is reduced, ensuring that the vehicle can still stop safely in an emergency, thus improving the safety and reliability of the system.
Smart Images
Figure CN223850594U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the line control brake field, especially relates to a line control brake controller system architecture and brake signal redundancy system architecture. BACKGROUND
[0002] The traditional brake wheel edge controller only relies on the CAN control signal of the brake domain controller to work, and although this architecture can stably realize brake control under normal circumstances, it also has certain failure risks.
[0003] At the same time, although the brake domain controller has a redundancy design, the existing redundancy measures can not cover all failure modes, such as software failure, hardware short circuit or communication link interruption, etc., which can all cause the entire system to fail. If the CAN bus or the brake domain controller fails, the wheel edge controller will lose the brake force control ability.
[0004] Therefore, it is urgent to design a new safety redundancy architecture to solve the above problems. UTILITY MODEL CONTENT
[0005] The utility model aims at overcoming the above shortcomings, and provides a line control brake controller system architecture and brake signal redundancy system architecture, which uses the line control pedal hard-wire signal and the parking controller hard-wire signal as the backup of the brake domain controller signal, increases the brake wheel edge controller hard-wire signal receiving source, and when the brake domain controller fails, the brake wheel edge controller can still receive the hard-wire brake signal of the line control pedal or the parking brake, so as to realize safe braking.
[0006] Technical scheme: In order to realize the above purpose, the utility model provides a line control brake controller system architecture, which comprises a brake domain controller, four brake wheel edge controllers, a line control pedal and a parking controller; the brake wheel edge controller is connected with the brake domain controller, and the brake domain controller realizes control signal transmission through the CAN control signal; the line control pedal is connected with the brake wheel edge controller, and the line control pedal realizes control signal transmission through the pedal hard-wire signal; the parking controller is connected with the brake wheel edge controller, and the parking controller realizes control signal transmission through the parking hard-wire signal. The brake signal source of the brake wheel edge controller is the brake domain controller CAN signal, the line control pedal hard-wire signal and the parking controller hard-wire signal, realizes triple signal input redundancy, prevents the loss of protection measures under the condition of brake domain controller CAN signal failure, and greatly guarantees the safety.
[0007] Further, the signal priority is that the brake domain controller CAN signal is superior to the drive-by-wire pedal hard-wire signal, which is superior to the parking controller hard-wire signal. The setting of the priority ensures the efficient control of the vehicle brake by the brake domain controller under normal circumstances and provides necessary redundancy backup through the hard-wire signal to ensure the safety of the system under extreme conditions.
[0008] Further, the drive-by-wire pedal is further connected with the brake domain controller through a pedal hard-wire signal. The pedal hard-wire signal ensures the stability of the signal transmission between the drive-by-wire pedal and the brake domain controller.
[0009] Further, the parking controller is further connected with the brake domain controller through a parking hard-wire signal. The parking hard-wire signal ensures the stability of the signal transmission between the parking controller and the brake domain controller.
[0010] Further, the CAN control signal includes CAN signal 1 and CAN signal 2; the CAN signal 1 and the CAN signal 2 are both connected with the brake wheel controller. The CAN signal 1 and the CAN signal 2 simultaneously serve as the control signal of the brake wheel controller and are backup for each other to prevent the control signal of the brake wheel controller from being invalid.
[0011] The utility model also provides a kind of brake signal redundancy system architecture, including brake domain controller module, drive-by-wire pedal module, parking controller module and EMB module;The EMB module includes signal receiving module, signal processing module and brake execution module;Signal receiving module, signal processing module and brake execution module are sequentially connected;Brake domain controller module passes through brake domain controller and transmits CAN signal to signal receiving module;Drive-by-wire pedal module passes through drive-by-wire pedal and transmits pedal hard-wire signal to signal receiving module;Parking controller module passes through parking controller and transmits parking hard-wire signal to signal receiving module.
[0012] Further, the signal receiving module of the EMB module can receive CAN signal from the brake domain controller, hard-wire signal of the drive-by-wire pedal and hard-wire signal of the parking controller. This multi-signal source redundancy design significantly reduces the brake risk caused by single signal failure. Even if part of the module fails, the system can still maintain basic brake function through the backup signal source to ensure the safety of the vehicle in emergency.
[0013] Further, at least one of the brake wheel controllers uses the brake signal redundancy system architecture. The redundant design of at least one brake wheel controller can significantly improve the safety of the overall system without significantly increasing the cost of the system. Even if other wheel controllers fail, the controller with redundant design can still provide reliable braking ability to ensure the safety of the vehicle.
[0014] The technical scheme has the following beneficial effects:
[0015] The utility model discloses a kind of line control brake controller system architecture and brake signal redundancy system architecture, by using line control pedal hardwire signal and parking controller hardwire signal as the backup of brake area controller signal, brake wheel edge controller hardwire signal receiving source is increased, when brake area controller fails, brake wheel edge controller can still receive the hardwire brake signal of line control pedal or parking brake, realize safety brake. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a kind of line control brake controller system architecture for the utility model to show the schematic diagram of;
[0017] Figure 2 It is a kind of brake signal redundancy system architecture for the utility model to show the schematic diagram. DETAILED DESCRIPTION
[0018] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as limiting the utility model. EMBODIMENT
[0019] In this embodiment, as Figure 1 The utility model discloses a kind of line control brake controller system architecture, including brake area controller, four brake wheel edge controllers, line control pedal and parking controller;The brake wheel edge controller is connected with brake area controller, and brake area controller is realized control signal transmission by CAN control signal;The line control pedal is connected with brake wheel edge controller, and line control pedal is realized control signal transmission by pedal hardwire signal;The parking controller is connected with brake wheel edge controller, and parking controller is realized control signal transmission by parking hardwire signal.
[0020] In particular, the following preferences exist: for the sake of cost saving, double signal input redundancy structure of brake area controller CAN signal cooperating with line control pedal hardwire signal or brake area controller CAN signal cooperating with parking controller hardwire signal can be used, which can also greatly prevent brake failure caused by brake area controller failure.
[0021] In this embodiment, as Figure 1 The signal priority is brake area controller CAN signal is better than line control pedal hardwire signal is better than parking controller hardwire signal.
[0022] Specifically, when the brake domain controller is working properly, the brake wheel-side controller prioritizes the use of the brake domain controller's CAN signal, while the hard-wired signals of the drive-by-wire pedal and parking controller are continuously received but do not participate in brake control.
[0023] In this embodiment, as Figure 1 The drive-by-wire pedal is also connected to the brake domain controller via a pedal hardwire signal.
[0024] In this embodiment, as Figure 1 The parking controller is also connected to the braking domain controller via a parking hardwire signal.
[0025] In particular, to improve system reliability, the drive-by-wire pedal module and parking controller can be connected to the brake domain controller simultaneously via CAN bus and hard-wired signals; under normal circumstances, CAN bus communication is used first; when the CAN bus fails, it switches to hard-wired signals to further ensure the redundancy and safety of the braking system.
[0026] In this embodiment, as Figure 1 The CAN control signals include CAN signal 1 and CAN signal 2; both CAN signal 1 and CAN signal 2 are connected to the brake wheel-side controller.
[0027] Specifically, CAN signal 1 and CAN signal 2 serve as the primary and backup signals, respectively. During normal operation, the brake wheel-side controller prioritizes receiving CAN signal 1. When CAN signal 1 fails, it automatically switches to CAN signal 2 to ensure the reliability and safety of the braking system.
[0028] This utility model also discloses a brake signal redundancy system architecture, including a brake domain controller module, a drive-by-wire pedal module, a parking controller module, and an EMB module; the EMB module includes a signal receiving module, a signal processing module, and a brake execution module; the signal receiving module, the signal processing module, and the brake execution module are connected in sequence; the brake domain controller module transmits CAN signals to the signal receiving module through the brake domain controller; the drive-by-wire pedal module transmits pedal hardwire signals to the signal receiving module through the drive-by-wire pedal; the parking controller module transmits parking hardwire signals to the signal receiving module through the parking controller.
[0029] Specifically, the braking execution module can be designed as an independent execution unit. The brake wheel-side controller of each wheel receives instructions from the signal processing module through the motor controller to achieve fast and precise braking force control.
[0030] In particular, during emergency braking, the braking execution module can prevent wheel lock-up through high-frequency intermittent braking, further improving braking safety.
[0031] In this embodiment, asFigure 1 and Figure 2 At least one of the brake wheel-side controllers uses a brake signal redundancy system architecture.
[0032] Specifically, the brake wheel-side controller of each wheel works independently after receiving a signal, so that even if the braking device of some wheels fails, the other wheels can still brake normally.
[0033] The working principle of the above embodiments is as follows:
[0034] This utility model discloses a brake-by-wire controller system architecture and a brake signal redundancy system architecture. When the brake domain controller is working normally, the brake wheel-side controller prioritizes the use of the brake domain controller's CAN signal, while the hard-wired signals of the brake pedal and parking controller are continuously received but do not participate in brake control. When the brake domain controller malfunctions or fails, the brake domain controller's CAN signal reports an error or is interrupted, at which time the driver will receive fault information. At this time, the brake wheel-side controller uses the hard-wired signals of the brake pedal and parking controller as backup control inputs, and the driver can achieve safe braking of the vehicle through the brake pedal or parking controller.
[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.
Claims
1. A brake-by-wire controller system architecture, characterized by: Comprising: A brake domain controller, four brake wheel edge controllers, the brake wheel edge controllers are connected with the brake domain controller, and the brake domain controller realizes control signal transmission through CAN control signal; A drive-by-wire pedal, the drive-by-wire pedal is connected with the brake wheel edge controller, and the drive-by-wire pedal realizes control signal transmission through pedal hard-wire signal; A parking controller, the parking controller is connected with the brake wheel edge controller, and the parking controller realizes control signal transmission through parking hard-wire signal.
2. The brake-by-wire brake controller system architecture of claim 1, wherein: The signal priority is brake domain controller CAN signal is better than drive-by-wire pedal hard-wire signal is better than parking controller hard-wire signal.
3. The brake-by-wire brake controller system architecture of claim 1, wherein: The drive-by-wire pedal is also connected with the brake domain controller through pedal hard-wire signal.
4. The brake-by-wire brake controller system architecture of claim 1, wherein: The parking controller is also connected with the brake domain controller through parking hard-wire signal.
5. The brake-by-wire brake controller system architecture of claim 1, wherein: The CAN control signal includes CAN signal 1 and CAN signal 2; both the CAN signal 1 and the CAN signal 2 are connected with the brake wheel edge controller.
6. A brake signal redundancy system architecture for implementing the brake-by-wire controller system architecture of any one of claims 1-5, characterized by: Comprising: A brake domain controller module, a drive-by-wire pedal module, a parking controller module and an EMB module; the EMB module includes a signal receiving module, a signal processing module and a brake execution module; the signal receiving module, the signal processing module and the brake execution module are connected in sequence; The brake domain controller module transmits CAN signal to the signal receiving module through the brake domain controller; the drive-by-wire pedal module transmits pedal hard-wire signal to the signal receiving module through the drive-by-wire pedal; the parking controller module transmits parking hard-wire signal to the signal receiving module through the parking controller.
7. The brake signal redundancy system architecture of claim 6, wherein: At least one of the brake wheel edge controllers uses a brake signal redundancy system architecture.