Simple electronic parking control system

Abstract

The utility model belongs to large -scale vehicle electronic parking technical field, concretely is a simple electronic parking control system, include: self -reset manual switch can twist left and right, fuse, series connection between power supply and self -reset manual switch, first relay and second relay respectively correspond to the left end and right end output of self -reset manual switch of self -reset manual switch, caliper motor, both ends are connected to the normally open contact of first relay and second relay respectively, the left side output of self -reset manual switch is connected to the anode of power supply through the coil of first relay, and the right -end output is connected to the anode of power supply through the coil of second relay, the utility model discloses through abandoning controller, only using the pure hardware architecture of basic relay and switch, the manufacturing cost is reduced greatly, makes this technology can be widely used in low -end commercial and engineering vehicle, the reliability is high, no software is participated, and the logic is directly realized by hardware circuit, and the anti -interference ability is strong, and the work is stable.

Description

Technical Field

[0001] This utility model belongs to the field of electronic parking technology for large vehicles, and in particular relates to a simple electronic parking control system. Background Technology

[0002] Electronic parking brake (EPB) is an intelligent braking technology that replaces the traditional mechanical handbrake with an electronic control unit. The driver simply touches a button to trigger the motor-driven rear wheel calipers to lock the vehicle, eliminating the need for manual pulling. This system often integrates an Auto Hold function, which automatically maintains braking force on slopes or during temporary parking to prevent rolling. In case of emergency braking while driving, EPB will also coordinate with the ESP system to implement active safety intervention. Electronic parking brake not only frees up interior space but also achieves efficient distribution and intelligent management of braking force through precise electronic control, significantly improving driving convenience and safety.

[0003] While existing electronic parking systems are widely used in passenger vehicles, they are expensive, require the use of controllers, and have complex logic structures. Using them in low-end engineering vehicles and special vehicles would increase the cost of the product, which is not conducive to the application of electronic parking systems.

[0004] To address the aforementioned issues, this application proposes a simplified electronic parking control system. Utility Model Content

[0005] The purpose of this invention is to provide a simple electronic parking control system that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a simple electronic parking control system, comprising:

[0008] The self-resetting manual switch can be turned left and right.

[0009] The fuse is connected in series between the power supply and the self-resetting manual switch;

[0010] The first relay and the second relay correspond to the left and right outputs of the self-resetting manual switch, respectively.

[0011] The caliper motor is connected at both ends to the normally open contacts of the first and second relays, respectively.

[0012] The left output of the self-resetting manual switch is connected to the positive power supply via the coil of the first relay, and the right output is connected to the positive power supply via the coil of the second relay.

[0013] The two ends of the caliper motor are selectively connected to power or grounded through the normally open contacts of the first and second relays, respectively.

[0014] Furthermore, turning the self-resetting manual switch left and right corresponds to releasing and clamping the caliper motor, respectively.

[0015] Furthermore, when the self-resetting manual switch is turned to the left, the left end is connected to the power supply; when turned to the right, the right end is connected to the power supply; and when released, it automatically resets to the neutral disconnected state.

[0016] Furthermore, the common terminals of the first and second relays are respectively connected to the two ends of the caliper motor, the normally open contacts are connected to the positive terminal of the power supply, and the normally closed contacts are kept grounded.

[0017] Furthermore, the self-resetting manual switch is a double-throw self-resetting switch.

[0018] Furthermore, both the first relay and the second relay are single-pole double-throw relays.

[0019] This utility model has the following beneficial effects:

[0020] This invention significantly reduces manufacturing costs by eliminating the controller and using only a pure hardware architecture of basic relays and switches, enabling the technology to be widely applied to low-end commercial and engineering vehicles.

[0021] This invention features high reliability, requires no software intervention, and its logic is directly implemented by hardware circuitry. It also boasts strong anti-interference capabilities and stable operation.

[0022] This invention offers excellent safety features. The self-resetting switch and the default grounding design of the relay work together to ensure operational safety and effectively prevent motor malfunctions and system failures.

[0023] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

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

[0025] Figure 1 This is a schematic diagram of the system block structure of this utility model;

[0026] Figure 2 This is the circuit diagram of this utility model;

[0027] The attached diagram lists the components represented by each number as follows:

[0028] In the diagram: 1. Self-resetting manual switch; 2. Fuse; 3a. First relay; 3b. Second relay; 4. Caliper motor. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-2 As shown, this utility model is a simple electronic parking control system, comprising:

[0031] Self-resetting manual switch 1, which can be turned left and right;

[0032] Fuse 2 is connected in series between the power supply and the self-resetting manual switch 1;

[0033] The first relay 3a and the second relay 3b correspond to the left and right outputs of the self-resetting manual switch 1, respectively.

[0034] The caliper motor 4 is connected at both ends to the normally open contacts of the first relay 3a and the second relay 3b, respectively;

[0035] The left output of the self-resetting manual switch 1 is connected to the positive power supply through the coil of the first relay 3a, and the right output is connected to the positive power supply through the coil of the second relay 3b.

[0036] The two ends of the caliper motor 4 are selectively connected to power or grounded through the normally open contacts of the first relay 3a and the second relay 3b, respectively.

[0037] In operation, the operator selectively supplies power to one of the two relay coils by turning the switch left or right. When the relay engages, it changes its contact state, directing the positive power to one end of the caliper motor, while the other end remains grounded through the normally closed contact of the unengaged relay. This creates opposite voltages across the motor, driving it to rotate forward (release) or reverse (clamp). This design requires no software or intelligent controller; it achieves precise control of the actuator solely through the basic electrical logic of relay "on" and "off," greatly simplifying the system and reducing costs.

[0038] Furthermore, turning the self-resetting manual switch 1 left and right corresponds to releasing and clamping the caliper motor 4, respectively. In this embodiment, when the motor is stalled, its internal drive circuit can detect a large current and automatically cut off the motor power supply or limit the current to prevent the motor from burning out. This allows the present invention to adopt the simple logic of "unconditionally performing one action": regardless of the current state of the caliper, operating the switch will cause the motor to run in the target direction until the stall protection intervenes. Users do not need to worry about damaging the equipment due to repeated operations, as the system itself can complete the forced calibration of the state, ensuring the reliability of the parking state.

[0039] Furthermore, when the self-resetting manual switch 1 is turned to the left, the left end connects to the power supply; when turned to the right, the right end connects to the power supply. Upon release, it automatically resets to the neutral, disconnected position. This characteristic of the self-resetting manual switch 1—"turning left connects to the left circuit - turning right connects to the right circuit - releasing automatically resets and disconnects power"—is the foundation for the "jog" control in this solution. During operation, the driver must continuously press and hold the switch until the motor completes its movement (usually for 1-2 seconds). After releasing, the switch automatically springs back to the neutral position, automatically cutting off all circuits. This operation method is not only intuitive (left release, right tighten) but also avoids the risk of the motor burning out due to misoperation or forgetting to turn off the switch, ensuring high safety. Its mechanical self-resetting characteristic is a prerequisite for the simple and reliable control of this system.

[0040] Furthermore, the common terminals of the first relay 3a and the second relay 3b are respectively connected to the two ends of the caliper motor 4, the normally open contacts are connected to the positive terminal of the power supply, and the normally closed contacts are kept grounded.

[0041] Furthermore, the self-resetting manual switch 1 is a double-throw self-resetting switch. This switch is the core of the human-machine interface of this system. Its characteristic is that through the mechanical action of turning left or right, it can selectively connect the left or right control circuit and issue "release" or "clamp" commands. Most importantly, it has a self-resetting feature. After the operator releases it, it will automatically spring back to the neutral position and cut off the power. This not only realizes simple "jog" control, but also eliminates the risk of the motor being energized for a long time due to forgetting to turn off the switch at the hardware level, ensuring the inherent safety of the system.

[0042] Furthermore, both the first relay 3a and the second relay 3b are single-pole double-throw relays, which are the core of the system's logic execution and power drive. Their characteristic lies in using the energization and de-energization of the coil to control the switching of their common contact between "normally closed (grounded)" and "normally open (powered)". Through this characteristic, the two relays cleverly form a simplified H-bridge circuit, realizing the control of the voltage polarity across the caliper motor, thereby driving the motor to rotate forward and backward. Their "normally closed terminal default grounding" characteristic ensures reliable grounding of the motor during non-operational periods, providing a safe and stable default state.

[0043] It is understandable that this utility model significantly reduces manufacturing costs by abandoning the controller and using only a pure hardware architecture of basic relays and switches, enabling the technology to be widely used in low-end commercial and engineering vehicles; it has high reliability, no software involvement, the logic is directly implemented by hardware circuits, strong anti-interference ability, and stable operation.

[0044] One specific application of this embodiment is:

[0045] By turning the self-resetting manual switch 1 to the left (which can be defined as caliper motor release), the left end of the switch is connected to the power supply, the coil of the first relay (3a) is energized, the relay is energized, and the left end of the caliper motor 4 is energized. The second relay (3b) on the right end does not operate and remains unchanged, which means it is grounded. At this time, the caliper motor 4 needs to perform a release action once, whether it is in the release state or the clamping state. If the original state is the release state, the caliper motor 4 has a stall protection function, and the motor still performs a release action once. If the original state is the clamping state, the caliper motor 4 can be released normally to realize the vehicle driving function.

[0046] By turning the self-resetting manual switch 1 to the right (which can be defined as caliper motor clamping), the right end of the switch is connected to the power supply, and the coil of the second relay (3b) on the right end is energized. The relay is energized, which energizes the right end of the caliper motor 4. The first relay (3a) does not operate and remains unchanged, which means it is grounded. At this time, the caliper motor needs to perform a clamping action regardless of whether it is in the released state or the clamping state. If the original state is the clamping state, the caliper motor 4 has a stall protection function, and the motor still performs a clamping action. If the original state is the released state, it can clamp normally, thus realizing the electronic parking function through only relays and switches in the controller-less state.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A simple electronic parking control system, characterized in that, include: The self-resetting manual switch (1) can be turned left and right. A fuse (2) is connected in series between the power supply and the self-resetting manual switch (1); The first relay (3a) and the second relay (3b) correspond to the left and right outputs of the self-resetting manual switch (1), respectively. The caliper motor (4) is connected at both ends to the normally open contacts of the first relay (3a) and the second relay (3b), respectively. The left output of the self-resetting manual switch (1) is connected to the positive power supply through the coil of the first relay (3a), and the right output is connected to the positive power supply through the coil of the second relay (3b). The two ends of the caliper motor (4) are selectively connected to power or grounded through the normally open contacts of the first relay (3a) and the second relay (3b), respectively.

2. The simplified electronic parking control system according to claim 1, characterized in that: The left and right rotation of the self-resetting manual switch (1) corresponds to the release and clamping of the caliper motor (4), respectively.

3. A simplified electronic parking control system according to claim 1, characterized in that: The self-resetting manual switch (1) connects the power supply to the left end when turned to the left and to the right end when turned to the right. After being released, it automatically resets to the neutral open state.

4. A simplified electronic parking control system according to claim 1, characterized in that: The common terminal of the first relay (3a) and the second relay (3b) is connected to both ends of the caliper motor (4), the normally open contact is connected to the positive terminal of the power supply, and the normally closed contact is grounded.

5. A simplified electronic parking control system according to claim 1, characterized in that: The self-resetting manual switch (1) is a double-throw self-resetting switch.

6. A simplified electronic parking control system according to claim 1, characterized in that: Both the first relay (3a) and the second relay (3b) are single-pole double-throw relays.

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