Automatic parking control device and vehicle

Abstract

The utility model relates to the technical field of vehicles, in particular to an automatic parking control device and a vehicle. The temperature sensor is arranged at the target position of the brake disc; the comparison mechanism is connected with the temperature sensor, and outputs a final target voltage by comparing the brake disc temperature detected by the temperature sensor with a preset temperature; and the controller is respectively connected with the clamping mechanism and the comparison mechanism and is used for controlling the clamping mechanism to clamp or release according to the final target voltage. Therefore, the problems that according to an automatic parking structure in the prior art, when the temperature of a brake disc is high, due to insufficient clamping force, a vehicle slides easily, and safety is poor are solved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly relates to an automatic parking control device and a vehicle. Background Art

[0002] When the vehicle decelerates to a complete stop, the hydraulic braking system will maintain a certain braking pressure in the automatic parking function, so that the driver does not have to keep stepping on the brake pedal to keep the vehicle stationary.

[0003] In the related art, when the vehicle slips, the automatic parking structure directly uses the clamping mechanism to clamp, and cannot identify the problem of insufficient clamping force of the vehicle in other situations, resulting in low applicability and poor safety. Utility Model Content

[0004] The present application provides an automatic parking control device and a vehicle to solve the problems that the automatic parking structure is prone to slipping due to insufficient clamping force when the brake disc temperature is high, and the safety is poor.

[0005] In a first aspect of the embodiments of the present application, an automatic parking control device is provided, including: a clamping mechanism; a temperature sensor disposed at a target position of the brake disc; a comparison mechanism connected to the temperature sensor, which outputs a final target voltage by comparing the brake disc temperature detected by the temperature sensor with a preset temperature; a controller respectively connected to the clamping mechanism and the comparison mechanism, which controls the clamping or releasing of the clamping mechanism according to the final target voltage.

[0006] Optionally, the comparison mechanism includes a timer and a first to third comparator. Among them, the first comparator is connected to the temperature sensor, and outputs a first target voltage by comparing the brake disc temperature detected by the temperature sensor with a preset temperature; a timer connected to the first comparator starts timing according to the target voltage; a second comparator connected to the timer outputs a second target voltage according to the timing duration of the timer and a preset duration; a third comparator respectively connected to the first comparator and the second comparator outputs a target voltage based on the first target voltage and the second target voltage.

[0007] Optionally, both the first target voltage and the second target voltage include a first voltage and a second voltage, where the first voltage is greater than the second voltage.

[0008] Optionally, the output end of the third comparator is respectively connected to the controller and the timer. Among them, if the final target voltage is the first voltage, the controller controls the clamping mechanism to clamp according to the first voltage, and adjusts the preset duration of the second comparator according to the current number of times of clamping again.

[0009] In a third aspect embodiment of the present application, a vehicle is provided, including the automatic parking control device as described in the above embodiments.

[0010] Therefore, the present application has at least the following beneficial effects:

[0011] In the embodiment of the present application, a temperature sensor is used to detect the temperature of the brake disc, and a comparator is used to compare the current temperature of the brake disc with a preset temperature and output a final target voltage to the controller. The controller controls the clamping mechanism to clamp or release according to the target voltage, so that corresponding boosting and clamping actions can be performed according to the temperature of the brake disc, reducing the risk of vehicle rollback and improving safe driving.

[0012] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0014] Figure 1 FIG. is a block diagram of an automatic parking control device according to an embodiment of the present application;

[0015] Figure 2 FIG. is a schematic diagram of an automatic parking function according to an embodiment of the present application.

[0016] Description of reference numerals: Clamping mechanism 100, Temperature sensor 200, Comparison mechanism 300, Timer 310, First comparator 320, Second comparator 330, Third comparator 340, Controller 400. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0018] The automatic parking control device and vehicle according to the embodiments of the present application will be described below with reference to the accompanying drawings. In view of the problem that the automatic parking structure in the above-mentioned background technology is prone to vehicle slipping due to insufficient clamping force when the brake disc temperature is relatively high, and the safety performance is poor, the present application provides an automatic parking control device. In this device, a temperature sensor is used to detect the brake disc temperature, and a comparison mechanism is used to compare the current brake disc temperature with a preset temperature and output a final target voltage to the controller. The controller controls the clamping mechanism to clamp or release according to the target voltage, so that corresponding boosting clamping actions can be performed according to the temperature of the brake disc, reducing the risk of vehicle slipping and improving safe driving. Thus, the problems such as the automatic parking structure being prone to vehicle slipping due to insufficient clamping force when the brake disc temperature is relatively high and poor safety performance are solved.

[0019] Specifically, Figure 1 is a block diagram of an automatic parking control device provided by an embodiment of the present application.

[0020] As Figure 1 shown, the automatic parking control device 10 includes: a clamping mechanism 100, a temperature sensor 200, a comparison mechanism 300, and a controller 400.

[0021] Among them, the temperature sensor 200 is arranged at the target position of the brake disc; the comparison mechanism 300 is connected to the temperature sensor 200, and outputs a final target voltage by comparing the brake disc temperature detected by the temperature sensor 200 with a preset temperature; the controller 400 is respectively connected to the clamping mechanism 100 and the comparison mechanism 300, and controls the clamping mechanism 100 to clamp or release according to the final target voltage.

[0022] Among them, the preset temperature can be 200°C or 300°C, which can be set according to actual needs and is not specifically limited.

[0023] It can be understood that in the embodiments of the present application, the temperature sensor 200 can be used to detect the brake disc temperature, and the comparison mechanism 300 can be used to compare the current brake disc temperature with a preset temperature and output a final target voltage to the controller 400. The controller 400 controls the clamping mechanism 100 to clamp or release according to the target voltage, so that corresponding boosting clamping actions can be performed according to the temperature of the brake disc, reducing the risk of vehicle slipping and improving safe driving.

[0024] In the embodiments of the present application, the comparison mechanism 300 includes a timer 310, a first comparator 320, a second comparator 330, and a third comparator 340.

[0025] Among them, the first comparator 320 is connected to the temperature sensor 200, compares the brake disc temperature detected by the temperature sensor 200 with a preset temperature, and outputs a first target voltage; a timer 310 connected to the first comparator 320 starts timing according to the target voltage; a second comparator 330 connected to the timer 310 outputs a second target voltage according to the timing duration of the timer 310 and a preset duration; a third comparator 340 respectively connected to the first comparator 320 and the second comparator 330 outputs a target voltage based on the first target voltage and the second target voltage.

[0026] Among them, the preset duration can be 180 s or 120 s, which can be set according to actual requirements and is not specifically limited.

[0027] It can be understood that in the embodiment of the present application, the first comparator 320 can compare the brake disc temperature with the preset temperature to output the first target voltage. When the first target voltage outputs a high voltage, the timer 310 is started. At the same time, the second comparator 330 outputs the second target voltage according to the timing duration and the preset duration. When the second target voltage is a high voltage, the third comparator 340 is started to output a target voltage based on the first target voltage and the second target voltage. Thus, the clamping mechanism 100 is controlled to clamp or release according to the target voltage, and the corresponding pressurized clamping action is performed according to the temperature of the brake disc, reducing the risk of vehicle rollback and improving safe driving.

[0028] In the embodiment of the present application, both the first target voltage and the second target voltage include a first voltage and a second voltage, where the first voltage is greater than the second voltage.

[0029] Among them, the first voltage can be a high voltage and the second voltage can be a low voltage.

[0030] In the embodiment of the present application, the output end of the third comparator 340 is respectively connected to the controller 400 and the timer 310. Among them, if the final target voltage is the first voltage, the controller 400 controls the clamping mechanism 100 to clamp according to the first voltage, and adjusts the preset duration of the second comparator 330 according to the current number of times of reclamping.

[0031] It can be understood that in the embodiment of the present application, when the third comparator 340 outputs the final target voltage as the first voltage, the controller 400 controls the clamping mechanism 100 to clamp according to the first voltage, and adjusts the preset duration of the second comparator 330 according to the current number of times of reclamping. Since when the brake disc temperature is higher, the performance affected by the temperature is different and the decline is faster, it is necessary to apply pressure in advance to ensure safety. However, the temperature decay may cause insufficient clamping force. Therefore, it is necessary to determine the number of times of reclamping according to actual requirements and control the clamping mechanism 100 to clamp again, thereby reducing the risk of vehicle rollback and improving safe driving.

[0032] The automatic parking control device proposed according to the embodiments of the present application uses a temperature sensor to detect the temperature of the brake disc, and uses a comparator to compare the current brake disc temperature with a preset temperature and output a final target voltage to the controller. The controller controls the clamping mechanism to clamp or release according to the target voltage, so as to be able to perform corresponding boosting clamping actions according to the temperature of the brake disc, reduce the risk of vehicle rollback, and improve safe driving.

[0033] The following will combine Figure 2 to elaborate in detail on the automatic parking control device of the present application as follows:

[0034] When the vehicle receives a parking signal, the temperature sensor 200 detects the temperature of the brake disc and outputs it to the first comparator 320 of the comparison mechanism 300. The first comparator 320 compares the brake disc temperature with the preset temperature. Among them, the preset temperature can be obtained by looking up a table, as shown in Table 1 below. According to the current different brake disc temperatures, the set interval time and the number of clamping times are different. Therefore, the comparator of the present application can adaptively select an appropriate preset temperature for control according to the brake disc temperature.

[0035] Temperature (°C) First pressurization time (S) Second pressurization time (S) Third pressurization time (S) ≥200 180 / / ≥300 120 180 / ≥400 60 120 240

[0036] For example, when the vehicle automatically parks and the detected temperature of the brake disc is greater than 200 °C and less than 300 °C, the target number of times for the vehicle to perform the clamping action again is 1 time, and the clamping interval duration for performing the clamping action again is 180 s.

[0037] According to the comparison of the brake disc temperature and the preset temperature by the first comparator 320, a first target voltage is output. When the first target voltage outputs a high voltage, the timer 310 is started. At the same time, the second comparator 330 outputs a second target voltage according to the timing duration and the preset duration. Among them, the preset duration is also obtained through Table 1 above. When the second target voltage is a high voltage, the third comparator 340 is started, and a final target voltage is output based on the first target voltage and the second target voltage. When the final target voltage is the first voltage, the controller 400 controls the clamping mechanism 100 to clamp. When the final target voltage is the second voltage, the controller 400 controls the clamping mechanism 100 to release, and controls the execution times of the entire process according to the actual number of clamping times.

[0038] The specific implementation is as follows: When the whole vehicle is in the ready state and the automatic parking switch is turned on, the automatic parking function is in a pending activation state. The PBM determines whether the automatic parking function needs to be activated by interacting with relevant controllers through signals. When the vehicle decelerates to a stop by stepping on the brake pedal during driving, the gear is in the power gear, the EPB (Electrical Park Brake) switch is not turned on, the EPB function is not activated, the accelerator pedal is not stepped on, and the vehicle has no starting tendency, and the wheel speed sensor signal is read and the vehicle remains stationary. At this time, the automatic parking function is activated, and the activation working state is displayed on the HMI instrument. The hydraulic braking system will maintain a certain braking pressure, so that the driver does not have to keep stepping on the brake pedal to keep the vehicle stationary. When the driver wants to drive the vehicle away, the braking pressure can be gradually released by stepping on the accelerator pedal, ensuring that the driver has a relatively comfortable driving process when driving the vehicle.

[0039] According to the initial brake disc temperature, different re-clamping times and clamping intervals can be performed according to the recommendation, and the final logic parameters are determined according to the requirements. The pressure application strategy table can be as shown in Table 1 above. According to the current different disc temperatures, the braking force is pressurized once every set time interval to ensure that the temperature decay process is synchronized and the pressure meets the requirements. It should be noted that the longest time can be monitored for 5 minutes.

[0040] In summary, the present application adds a temperature sensor and a comparison mechanism to the original automatic parking structure, making the automatic parking function more comprehensive, identifying driving conditions in advance, reducing the risk of vehicle rollback, and improving safe driving.

[0041] The embodiment of the present application also provides a vehicle, including the automatic parking control device as described in the above embodiment.

[0042] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or N embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An automatic parking control device, characterized in that: include: Clamping mechanism; A temperature sensor disposed at a target position of the brake disc; A comparison mechanism connected to the temperature sensor, outputting a final target voltage by comparing the brake disc temperature detected by the temperature sensor with a preset temperature; A controller connected to the clamping mechanism and the comparison mechanism respectively controls the clamping mechanism to clamp or release according to the final target voltage.

2. The automatic parking control device according to claim 1, characterized in that: The comparison mechanism includes a timer and first to third comparators, wherein: The first comparator is connected to the temperature sensor, compares the brake disc temperature detected by the temperature sensor with a preset temperature and outputs a first target voltage; a timer connected to the first comparator, starting timing according to the target voltage; A second comparator connected to the timer outputs a second target voltage according to the timing duration of the timer and a preset duration; A third comparator connected to the first comparator and the second comparator, respectively, outputs a target voltage based on the first target voltage and the second target voltage.

3. The automatic parking control device according to claim 2, characterized in that: The first target voltage and the second target voltage both include a first voltage and a second voltage, wherein the first voltage is greater than the second voltage.

4. The automatic parking control device according to claim 2, characterized in that: The output end of the third comparator is connected to the controller and the timer respectively, wherein if the final target voltage is the first voltage, the controller controls the clamping mechanism to clamp according to the first voltage, and adjusts the preset time length of the second comparator according to the current number of re-clamping.

5. A vehicle, comprising the automatic parking control device according to any one of claims 1 to 4.

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