Control logic system and method for electromagnetic brake of travel trailer

Abstract

The invention discloses a control logic system and method for an electromagnetic brake of a travel trailer, and the system comprises a sensor module, a processor unit, an electromagnetic brake actuator, a wireless communication module, a motor home controller and a tractor controller which are electrically connected with the motor home and a tractor. The sensor module is electrically connected with the processor unit and the wireless communication module, and the processor unit is electrically connected with the electromagnetic brake actuator and the wireless communication module. By integrating an advanced sensor technology and an intelligent algorithm, the state of a tractor and road conditions can be monitored in real time, the braking strength of the travel trailer can be dynamically adjusted according to different road conditions and driving conditions, it is ensured that the optimal braking effect can be kept in various environments, the accident risk caused by asynchronous braking is reduced, and the safety of the travel trailer is improved. And meanwhile, the braking response time can be effectively shortened, and the braking response speed, synchronism and safety of the pull type recreational vehicle are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of trailer-type caravans, and in particular to a control logic system and method for an electromagnetic brake of a trailer-type caravan. Background Art

[0002] When a traditional trailer caravan is driving, there is a certain power transmission delay between the tractor and the trailer, which directly leads to slow braking response and unsatisfactory braking effect of the trailer, especially in emergency braking situations, which can easily cause safety accidents. In the prior art, although some electromagnetic brakes have been applied to trailer caravans, their control logic is relatively simple and lacks adaptability to road conditions and dynamic behaviors of the tractor. Therefore, we propose a control logic system and method for electromagnetic brakes of trailer caravans. Summary of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a control logic system and method for an electromagnetic brake of a trailer RV.

[0004] The present invention proposes a control logic system for an electromagnetic brake of a trailer-type RV, comprising a sensor module electrically connected to the RV and the tractor, a processor unit, an electromagnetic brake actuator, a wireless communication module, a RV controller and a tractor controller, wherein the sensor module is electrically connected to the processor unit and the wireless communication module, the processor unit is electrically connected to the electromagnetic brake actuator and the wireless communication module, and the RV controller and the tractor controller are electrically connected to the RV and the tractor respectively; The sensor module includes an acceleration sensor, a wheel speed sensor and a tractor signal receiver; The processor unit includes an integrated high-performance microprocessor that meets automotive-grade requirements.

[0005] Preferably, the acceleration sensor, wheel speed sensor and tractor signal receiver are used to respectively collect data of the RV's forward acceleration, vehicle speed and tractor braking signal in real time.

[0006] Preferably, the integrated high-performance microprocessor is responsible for processing sensor data, using a control algorithm of fuzzy logic or machine learning algorithm, comprehensively considering historical braking behavior, current vehicle dynamic state and environmental factors, and dynamically adjusting the braking strategy. The RV controller receives the brake on / off information of the tractor through the wireless communication module, and uses the acceleration sensor to collect real-time acceleration values. The data is analyzed and processed by the processor unit. When the brake signal is received, the braking output interval is divided according to the acceleration value range, and the output interval is divided into 5. The maximum output of the braking force increases by 20% successively until the full power is 100% output; the wheel speed sensor signal is collected. When the vehicle speed range is greater than 0 and less than 10km / h, when the front vehicle releases the brake, the braking current output is controlled to enable the delayed descending ramp descent until the braking output is 0 to prevent the impact caused by the sudden circuit braking current being 0.

[0007] Preferably, the electromagnetic brake actuator is powered by 12V, and according to the instructions issued by the processor unit, the electromagnetic force of the brake caliper is accurately controlled to achieve precise regulation of the braking effect.

[0008] Preferably, the tractor has a built-in tractor control system, and the wireless communication module is used to communicate with the tractor control system to synchronize the driving status information of the tractor in real time.

[0009] The present invention also proposes a control logic method for an electromagnetic brake of a trailer RV, comprising the following steps: S1: Start the systems of the RV and the tractor, perform a self-check on the status of the RV controller, determine whether the circuit is disconnected, whether there is a signal, and establish a wireless connection with the tractor to confirm that the communication is normal; S2: Collecting information of the RV and the tractor through the sensor module, and transmitting the collected information to the processor unit; S3: The processor unit continuously receives and analyzes the braking signal, speed change and acceleration data of the tractor, and combines the data with the above supplementary content, and combines the preset safety threshold and road condition model to evaluate the braking intensity required at present; the safety threshold is when the absolute value of the forward acceleration collected exceeds the set value; the road condition model is when the front vehicle brakes and the forward acceleration exceeds the above threshold, then the braking is triggered; S4: The integrated high-performance microprocessor uses fuzzy logic or machine learning algorithms to dynamically adjust the braking strategy based on the current vehicle dynamic state, environmental factors and different road conditions, including reducing the braking force on slippery roads to avoid skidding. The specific strategy is that when the RV controller selects the snow mode, the processor unit adjusts the braking force output and reduces the output by 30% under normal braking force; or enhances braking to assist deceleration logic strategy when going downhill. The specific strategy is that when going downhill, the overall forward acceleration baseline is collected, the corresponding judgment range is enlarged, and the output braking force is increased; S5: Based on the calculation results of the high-performance microprocessor integrated in S4, the current output of the electromagnetic brake actuator is precisely controlled to generate a step-type curve of the braking force increase, so as to achieve stable and smooth braking of the wheel by the brake caliper; S6: The braking effect is monitored through acceleration sensors and wheel speed sensors. If insufficient or excessive braking is detected, the system will immediately make fine adjustments to ensure that the braking of the trailer caravan and the tractor are synchronized. The specific strategy for insufficient braking is that if the vehicle speed sensor value does not drop by 20%, or the forward deceleration acceleration value does not increase by 20%, the braking force output will be further increased by 10%, and continuous testing will be carried out according to this strategy; excessive braking means that the tractor speed has not reached 0, but the RV speed is close to 0. At this time, the braking force output will be reduced by 50%, and continuous testing will be carried out.

[0010] Preferably, in said S2, the collected information includes data of acceleration, vehicle speed and braking signal of the tractor.

[0011] Preferably, in said S3, when evaluating the currently required braking intensity, it is necessary to determine whether it exceeds a threshold value. If so, an alarm is sounded to remind the personnel; if not, proceed to the next step.

[0012] Compared with the prior art, the present invention has the following beneficial effects: By integrating advanced sensor technology and intelligent algorithms, the present invention can monitor the status of the tractor and road conditions in real time, dynamically adjust the braking intensity of the trailer caravan according to different road conditions and driving conditions, ensure the best braking effect in various environments, reduce the risk of accidents caused by asynchronous braking, and effectively shorten the braking response time, thereby improving the braking response speed, synchronization and safety of the trailer caravan. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A block diagram of a control logic system for an electromagnetic brake of a trailer RV proposed by the present invention; Figure 2 The present invention is a flow chart of a control logic method for an electromagnetic brake of a trailer-type RV. DETAILED DESCRIPTION

[0014] The present invention will be further explained below in conjunction with specific embodiments. Example

[0015] Reference Figure 1-2 , this embodiment proposes a control logic system for electromagnetic brakes of a trailer-type RV, including a sensor module electrically connected to the RV and the tractor, a processor unit, an electromagnetic brake actuator, a wireless communication module, a RV controller and a tractor controller, the sensor module is electrically connected to the processor unit and the wireless communication module, the processor unit is electrically connected to the electromagnetic brake actuator and the wireless communication module, wherein a tractor control system is built in the tractor, and the wireless communication module is used to communicate with the tractor control system to synchronize the driving status information of the tractor in real time; The RV controller and the tractor controller are electrically connected to the RV and the tractor respectively. The electromagnetic brake actuator is powered by 12V and accurately controls the electromagnetic force of the brake caliper according to the instructions issued by the processor unit to achieve precise control of the braking effect. The sensor module includes an acceleration sensor, a wheel speed sensor and a tractor signal receiver, wherein the acceleration sensor, the wheel speed sensor and the tractor signal receiver are used to respectively collect data of acceleration, vehicle speed and tractor brake signal in real time; The processor unit includes an integrated high-performance microprocessor, which is responsible for processing sensor data and using a control algorithm of fuzzy logic or machine learning algorithm to dynamically adjust the braking strategy by comprehensively considering historical braking behavior, current vehicle dynamic state and environmental factors. The RV controller receives the brake on / off information of the tractor through the wireless communication module, and uses the acceleration sensor to collect real-time acceleration values. The data is analyzed and processed by the processor unit. When a brake signal is received, the brake output interval is divided according to the acceleration value range, and the output interval is divided into 5. The maximum output of the braking force increases by 20% successively until the full power is 100% output; the wheel speed sensor signal is collected. When the vehicle speed range is greater than 0 and less than 10km / h, when the front vehicle releases the brake, the control braking current output needs to enable the delayed descending ramp descent until the braking output is 0 to prevent the impact caused by the sudden circuit braking current being 0.

[0016] This embodiment also proposes a control logic method for an electromagnetic brake of a trailer RV, comprising the following steps: S1: Start the systems of the RV and the tractor, perform a self-check on the status of the RV controller, determine whether the circuit is disconnected, whether there is a signal, and establish a wireless connection with the tractor to confirm that the communication is normal; S2: Collecting information of the RV and the tractor through the sensor module, and transmitting the collected information to the processor unit; S3: The processor unit continuously receives and analyzes the braking signal, speed change and acceleration data of the tractor, and combines the data with the above supplementary content, and combines the preset safety threshold and road condition model to evaluate the braking intensity required at present; the safety threshold is when the absolute value of the forward acceleration collected exceeds the set value; the road condition model is when the front vehicle brakes and the forward acceleration exceeds the above threshold, then the braking is triggered; S4: The integrated high-performance microprocessor uses fuzzy logic or machine learning algorithms to dynamically adjust the braking strategy based on the current vehicle dynamic state, environmental factors and different road conditions, including reducing the braking force on slippery roads to avoid skidding. The specific strategy is that when the RV controller selects the snow mode, the processor unit adjusts the braking force output and reduces the output by 30% under normal braking force; or enhances braking to assist deceleration logic strategy when going downhill. The specific strategy is that when going downhill, the overall forward acceleration baseline is collected, the corresponding judgment range is enlarged, and the output braking force is increased; S5: Based on the calculation results of the high-performance microprocessor integrated in S4, the current output of the electromagnetic brake actuator is precisely controlled to generate a step-type curve of the braking force increase, so as to achieve stable and smooth braking of the wheel by the brake caliper; S6: The braking effect is monitored through acceleration sensors and wheel speed sensors. If insufficient or excessive braking is detected, the system will immediately make fine adjustments to ensure that the braking of the trailer caravan and the tractor are synchronized. The specific strategy for insufficient braking is that if the vehicle speed sensor value does not drop by 20%, or the forward deceleration acceleration value does not increase by 20%, the braking force output will be further increased by 10%, and continuous testing will be carried out according to this strategy; excessive braking means that the tractor speed has not reached 0, but the RV speed is close to 0. At this time, the braking force output will be reduced by 50%, and continuous testing will be carried out.

[0017] This embodiment integrates advanced sensor technology and intelligent algorithms to monitor the status of the tractor and road conditions in real time, dynamically adjust the braking intensity of the trailer caravan according to different road conditions and driving conditions, ensure the best braking effect in various environments, reduce the risk of accidents caused by asynchronous braking, and effectively shorten the braking response time, thereby improving the braking response speed, synchronization and safety of the trailer caravan.

[0018] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A control logic system for an electromagnetic brake of a trailer RV, characterized in that: It includes a sensor module electrically connected to the RV and the tractor, a processor unit, an electromagnetic brake actuator, a wireless communication module, a RV controller and a tractor controller, the sensor module is electrically connected to the processor unit and the wireless communication module, the processor unit is electrically connected to the electromagnetic brake actuator and the wireless communication module, and the RV controller and the tractor controller are electrically connected to the RV and the tractor respectively; The sensor module includes an acceleration sensor, a wheel speed sensor and a tractor signal receiver; The processor unit includes an integrated high-performance microprocessor that meets automotive-grade requirements.

2. A control logic system for electromagnetic brakes of a trailer caravan according to claim 1, characterized in that: The acceleration sensor, wheel speed sensor and tractor signal receiver are respectively used to collect data of the RV's forward acceleration, vehicle speed and tractor braking signal in real time.

3. A control logic system for electromagnetic brakes of a trailer caravan according to claim 1, characterized in that: The integrated high-performance microprocessor is responsible for processing sensor data and using a control algorithm of fuzzy logic or machine learning algorithm to dynamically adjust the braking strategy by comprehensively considering historical braking behavior, current vehicle dynamic state and environmental factors. The RV controller receives the brake on / off information of the tractor through the wireless communication module, and uses the acceleration sensor to collect real-time acceleration values. The data is analyzed and processed by the processor unit. When a brake signal is received, the brake output interval is divided according to the acceleration value range, and the output interval is divided into 5. The maximum output of the braking force increases by 20% successively until the full power is 100% output; the wheel speed sensor signal is collected. When the vehicle speed range is greater than 0 and less than 10km / h, when the front vehicle releases the brake, the braking current output is controlled to enable the delayed descending ramp until the braking output is 0 to prevent the impact caused by the sudden circuit braking current being 0.

4. A control logic system for electromagnetic brakes of a trailer RV according to claim 1, characterized in that: The electromagnetic brake actuator is powered by 12V and accurately controls the electromagnetic force of the brake caliper according to the instructions issued by the processor unit to achieve precise regulation of the braking effect.

5. The control logic system for electromagnetic brakes of a trailer caravan according to claim 1, characterized in that: The tractor has a built-in tractor control system, and the wireless communication module is used to communicate with the tractor control system to synchronize the driving status information of the tractor in real time.

6. A control logic method for an electromagnetic brake of a trailer RV, characterized in that: The following steps are involved: S1: Start the systems of the RV and the tractor, perform a self-check on the status of the RV controller, determine whether the circuit is disconnected, whether there is a signal, and establish a wireless connection with the tractor to confirm that the communication is normal; S2: Collecting information of the RV and the tractor through the sensor module, and transmitting the collected information to the processor unit; S3: The processor unit continuously receives and analyzes the braking signal, speed change and acceleration data of the tractor, and evaluates the braking intensity required at present by combining the data with the above supplementary content, the preset safety threshold and the road condition model; the safety threshold is when the absolute value of the forward acceleration collected exceeds the set value; the road condition model is when the front vehicle brakes and the forward acceleration exceeds the above threshold, then the braking is triggered; S4: The integrated high-performance microprocessor uses fuzzy logic or machine learning algorithms to dynamically adjust the braking strategy based on the current vehicle dynamic state, environmental factors and different road conditions, including reducing the braking force on slippery roads to avoid skidding. The specific strategy is that when the RV controller selects the snow mode, the processor unit adjusts the braking force output and reduces the output by 30% under normal braking force; or enhances braking to assist deceleration logic strategy when going downhill. The specific strategy is that when going downhill, the overall forward acceleration baseline is collected, the corresponding judgment range is enlarged, and the output braking force is increased; S5: Based on the calculation results of the high-performance microprocessor integrated in S4, the current output of the electromagnetic brake actuator is precisely controlled to generate a step-type curve of the braking force increase, so as to achieve stable and smooth braking of the wheel by the brake caliper; S6: The braking effect is monitored through acceleration sensors and wheel speed sensors. If insufficient or excessive braking is detected, the system will immediately make fine adjustments to ensure that the braking of the trailer caravan and the tractor are synchronized. The specific strategy for insufficient braking is that if the vehicle speed sensor value does not drop by 20%, or the forward deceleration acceleration value does not increase by 20%, the braking force output will be further increased by 10%, and continuous testing will be carried out according to this strategy; excessive braking means that the tractor speed has not reached 0, but the RV speed is close to 0. At this time, the braking force output will be reduced by 50%, and continuous testing will be carried out.

7. A control logic method for electromagnetic brakes of a trailer caravan according to claim 6, characterized in that: In S2, the collected information includes data of acceleration, vehicle speed and braking signal of the tractor.

8. The control logic method for electromagnetic brake of trailer caravan according to claim 6, characterized in that: In S3, when evaluating the currently required braking intensity, it is necessary to determine whether it exceeds the threshold. If so, an alarm is sounded to remind the personnel; if not, proceed to the next step.

Images