A vehicle hill start assist device, method and vehicle

Abstract

The application provides a vehicle coasting alarm braking device, method and vehicle. The device comprises an instrument, a controller, a service brake circuit system, a motor and a coasting alarm signal module. The instrument, the motor, the service brake circuit system and the coasting alarm signal module are electrically connected to the controller. The coasting alarm signal module comprises a parking signal module, a gear signal module and a wheel speed signal module, which generate a parking signal, a gear signal and a wheel speed signal respectively. The parking signal, the gear signal and the wheel speed signal constitute a coasting alarm signal. The controller is used for collecting the coasting alarm signal and controlling the instrument to send an alarm warning to the driver, and simultaneously controlling the motor to start the service brake circuit system to brake the vehicle. The technical scheme of the application can improve the safety of the vehicle, and has the advantages of simple structure design, high practicability and low cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of vehicle alarm, in particular to a vehicle hill start alarm braking device, method and vehicle. BACKGROUND

[0002] Cars will travel on different road surfaces, and there will be slope road surfaces in cities or mountainous areas, and there will be parking or hill start situations on such road surfaces. When a car is parked on a slope, there may be a hill start phenomenon, and there may be an unskilled or forgotten parking brake operation, which is generally applicable to all types of cars.

[0003] Existing vehicles generally do not have a hill start alarm device, or are equipped with a complex alarm device. If the driver is not focused during hill start, it is also difficult to detect vehicle hill start, and there is a lack of corresponding automatic braking measures. The vehicle start completely relies on the driver's operation level to determine whether the vehicle is hill starting, which may eventually lead to a vehicle hill start and cause a traffic accident. SUMMARY

[0004] To solve the above technical problems, the present application provides a vehicle hill start alarm braking device, method and vehicle to solve the above technical problems.

[0005] The first aspect of the present application discloses a vehicle hill start alarm braking device; comprising an instrument, a controller, a service brake circuit system, a motor and a hill start alarm signal module;

[0006] The instrument, motor, service brake circuit system and hill start alarm signal module are electrically connected to the controller;

[0007] The hill start alarm signal module comprises a parking signal module, a gear signal module and a wheel speed signal module, the parking signal module generates a parking signal through whole vehicle CAN network signal acquisition, the gear signal module generates a gear signal through whole vehicle CAN network signal acquisition, and the wheel speed signal module generates a wheel speed signal through a wheel speed sensor, and the parking signal, gear signal and wheel speed signal constitute a hill start alarm signal;

[0008] The controller is used to collect the hill start alarm signal and start the motor and the service brake circuit system;

[0009] The instrument is used to issue an alarm warning to the driver after the controller issues the hill start alarm signal;

[0010] The motor is used to start the service brake circuit system to brake the vehicle after the controller issues the hill start alarm signal.

[0011] According to the device of the first aspect of the present application, the controller and the motor are integrated into one structure.

[0012] According to the device of the first aspect of the present application, the service brake circuit system comprises a brake pedal, a total pump of a booster belt, a brake force controller and a brake; the brake comprises a front brake and a rear brake.

[0013] According to the device of the first aspect of the present application, the wheel speed sensor is oppositely installed with the gear ring, for forming a forward rotation signal and a backward rotation signal.

[0014] The second aspect of the present application discloses a vehicle coasting alarm braking method, using the vehicle coasting alarm braking device of the first aspect of the present application to perform vehicle coasting alarm braking, the method comprising:

[0015] The controller collects the parking signal, the gear signal and the wheel speed signal;

[0016] The controller performs logical judgment, sends an alarm signal to the instrument under the condition that the vehicle is in a special working condition, and sends a coasting alarm signal to the driver by the instrument; at the same time, the motor is started to apply brake pressure to the service brake circuit system, and the vehicle is controlled to brake;

[0017] After the vehicle is braked, the coasting alarm signal disappears, and the controller releases the brake pressure.

[0018] According to the method of the second aspect of the present application, the special working condition comprises an uphill working condition and a downhill working condition;

[0019] In the uphill working condition, when the parking signal is valid, the gear signal is in neutral, and the wheel speed signal is a backward rotation signal, the instrument alarms; when the parking signal is valid, the gear signal is in the forward gear, and the wheel speed signal is a backward rotation signal, the instrument alarms; when the parking signal is invalid, the gear signal is in neutral, and the wheel speed signal is a backward rotation signal, the instrument alarms; when the parking signal is invalid, the gear signal is in the forward gear, and the wheel speed signal is a backward rotation signal, the instrument alarms;

[0020] In the downhill working condition, when the parking signal is valid, the gear signal is in neutral, and the wheel speed signal is a forward rotation signal, the instrument alarms; when the parking signal is valid, the gear signal is in the reverse gear, and the wheel speed signal is a forward rotation signal, the instrument alarms; when the parking signal is invalid, the gear signal is in neutral, and the wheel speed signal is a forward rotation signal, the instrument alarms; when the parking signal is invalid, the gear signal is in the reverse gear, and the wheel speed signal is a forward rotation signal, the instrument alarms.

[0021] According to the method of the second aspect of the present application, the service brake circuit system comprises a brake pedal, an accumulator pump, a brake force controller and a brake;

[0022] The motor and the controller are an integrated controller and motor structure, which comprises the motor, the controller, an electromagnetic valve and a connector;

[0023] When the controller determines that the vehicle is in the special working condition, the motor increases the oil pressure of the brake pipe of the electromagnetic valve structure and the brake to apply brake pressure to the wheels.

[0024] According to the method of the second aspect of the present application, the motor is a DC motor, and the brake fluid delivery flow of the motor is greater than 3.5 ml / s, and the wheel cylinder pressure increases from zero to 10 MPa within 1 s.

[0025] The third aspect of the present application discloses a vehicle comprising the vehicle coasting alarm brake device of any one of the first aspect of the present application.

[0026] The scheme provided by the present application can improve the safety of the whole vehicle and ensure that the vehicle will not cause traffic accidents due to coasting in the working conditions of starting on a slope and parking on a slope. In addition, the present application has a simple structure, all parking signals, gear signals and wheel speed signals are configurations possessed by existing cars, no additional hardware is needed, only the corresponding logic needs to be added in the controller and provided to the instrument for alarm, which will not be damaged due to long-term use of the vehicle, has high practicability and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0028] Figure 1 The structural diagram of the vehicle coasting alarm brake device according to the embodiment of the present application;

[0029] Figure 2 The schematic diagram of the speed sensor according to the embodiment of the present application;

[0030] Figure 3 The integrated structure diagram of the controller and motor according to the embodiment of the present application;

[0031] Figure 4 The structural diagram of the service brake circuit system according to the embodiment of the present application;

[0032] Figure 5 Fig. 1 is a schematic view of a wheel end structure according to an embodiment of the present application;

[0033] Figure 6 Fig. 4 is a flow chart of a method for vehicle rolling alarm braking according to an embodiment of the present application.

[0034] Legend of reference signs:

[0035] 1, vehicle rolling alarm braking device; 11, instrument; 12, controller; 13, service brake circuit system; 131, brake pedal; 132, total pump with booster; 133, brake; 1331, front brake; 1332, rear brake; 14, motor; 15, rolling alarm signal module; 151, parking signal module; 152, gear signal module; 153, wheel speed signal module; 2, wheel speed sensor system; 21, wheel speed sensor; 22, gear ring; 23, wheel hub; 3, integrated structure of controller and motor; 31, electromagnetic valve; 32, connector; 4, wheel. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0037] The first aspect of the present application discloses Figure 1 Fig. 1 shows a vehicle rolling alarm braking device 1; comprising an instrument 11, a controller 12, a service brake circuit system 13, a motor 14 and a rolling alarm signal module 15.

[0038] Among them, the instrument 11, the motor 14, the service brake circuit system 13 and the rolling alarm signal module 15 are electrically connected with the controller 12 respectively;

[0039] The rolling alarm signal module 15 comprises a parking signal module 151, a gear signal module 152 and a wheel speed signal module 153, wherein the parking signal module 151 generates a parking signal through the whole vehicle CAN network signal acquisition, the gear signal module 152 generates a gear signal through the whole vehicle CAN network signal acquisition, and the wheel speed signal module 153 generates a wheel speed signal through a wheel speed sensor system 2, and the parking signal, the gear signal and the wheel speed signal constitute a rolling alarm signal;

[0040] The controller 12 is used for collecting the rolling alarm signal and starting the motor 14 and the service brake circuit system 13;

[0041] Instrument 11 is used to issue an alarm warning to the driver after the controller 12 issues a slope slip alarm signal;

[0042] The motor 14 is used to activate the service braking circuit system 13 to brake the vehicle after the controller 12 issues a slope slip alarm signal.

[0043] According to the vehicle rollaway alarm braking device 1 of the first aspect of the present invention, the controller 12 and the motor 14 can be set independently, or they can be integrated into a single structure 3. Figure 3 As shown, the integrated structure 3 of the controller and motor includes a motor 14, a controller 12, a solenoid valve 31, and a connector 32. The vehicle rollaway alarm braking device 1 of the present invention, by integrating the motor 14 and the controller 12 into one unit, saves installation space and component costs, thereby simplifying the overall structure of the vehicle rollaway alarm braking device 1 and reducing costs.

[0044] According to the first aspect of the present invention, the vehicle rollaway warning braking device 1, such as Figure 4 As shown, the vehicle braking circuit system 13 includes a brake pedal 131, a booster with a master cylinder 132, a controller 12, and a brake 133; the brake 133 includes a front brake 1331 and a rear brake 1332. After the controller 12 detects the runaway alarm signal, it synchronously starts the motor 14 to increase the oil pressure in the brake lines and brake 133 through the solenoid valve 31 of the integrated controller and motor structure 3, so as to ensure that the vehicle can stop on the slope and not continue to roll backward, avoiding dangers such as traffic accidents. When the runaway alarm signal disappears, the controller releases the brake pressure to ensure that the vehicle can start smoothly.

[0045] According to the first aspect of the present invention, the vehicle rollaway warning braking device 1, such as Figure 2 As shown, wheel speed sensor 21 is mounted opposite to gear ring 22. When the vehicle is moving, as... Figure 5 As shown, the hub 23 on wheel 4 rotates, and the toothed ring 22 rotates synchronously with the hub 23. The wheel speed sensor 21 senses the number of rotations of the toothed ring 22 and outputs a voltage signal, i.e., a rotation speed signal, which is provided to the controller 12. The wheel speed sensor 21 has a direction recognition function, which can be divided into forward direction and backward direction, i.e., it can generate forward rotation signal and backward rotation signal.

[0046] The vehicle slope sliding alarm braking device 1 according to the present application can improve the safety of the whole vehicle, and ensure that the vehicle will not cause traffic accidents due to slope sliding in the slope starting and slope parking working conditions. In addition, the vehicle slope sliding alarm braking device 1 of the present application has a simple structure, all of the parking signal, gear signal and wheel speed signal are the configurations possessed by the existing vehicle, without the need of additional hardware, only the corresponding logic in the controller and the alarm provided to the instrument are needed, without the wear caused by long time use of the vehicle, high practicability and low cost.

[0047] The second aspect of the present application discloses a vehicle slope sliding alarm braking method, which uses the vehicle slope sliding alarm braking device 1 of the first aspect of the present application to perform vehicle slope sliding alarm braking. Figure 6 The flow chart of the vehicle slope sliding alarm braking method according to the embodiment of the present application is shown in Figure 6 The method comprises the following steps:

[0048] The controller 12 collects the parking signal, gear signal and wheel speed signal;

[0049] The controller 12 performs logical judgment, sends an alarm signal to the instrument 11 in the case of determining that the vehicle is in a special working condition, and the instrument 11 sends a slope sliding alarm signal to the driver; at the same time, the motor 14 is started to apply brake pressure to the driving brake circuit system 13, and the brake 133 controls the brake of the vehicle;

[0050] After the vehicle is braked, the slope sliding alarm signal disappears, and the controller 12 releases the brake pressure.

[0051] According to the method of the second aspect of the present application, the special working condition includes uphill working condition and downhill working condition;

[0052] The specific description of the special working condition is shown in the following table:

[0053]

[0054]

[0055] In the uphill working condition, when the parking signal is valid, the gear signal is in neutral, and the wheel speed signal is a backward rotation signal, the instrument 11 sends an alarm; when the parking signal is valid, the gear signal is in forward gear, and the wheel speed signal is a backward rotation signal, the instrument 11 sends an alarm; when the parking signal is invalid, the gear signal is in neutral, and the wheel speed signal is a backward rotation signal, the instrument 11 sends an alarm; when the parking signal is invalid, the gear signal is in forward gear, and the wheel speed signal is a backward rotation signal, the instrument 11 sends an alarm;

[0056] In the downhill working condition, when the parking signal is valid, the gear signal is in neutral, and the wheel speed signal is a forward rotation signal, the instrument 11 issues an alarm; when the parking signal is valid, the gear signal is in reverse, and the wheel speed signal is a forward rotation signal, the instrument 11 issues an alarm; when the parking signal is invalid, the gear signal is in neutral, and the wheel speed signal is a forward rotation signal, the instrument 11 issues an alarm; when the parking signal is invalid, the gear signal is in reverse, and the wheel speed signal is a forward rotation signal, the instrument 11 issues an alarm.

[0057] According to the method of the second aspect of the present application, the service brake circuit system 13 comprises a brake pedal 131, an assist pump 132, a controller 12 and a brake 133; the brake 133 comprises a front brake 1331 and a rear brake 1332. The controller 12 and the motor 14 are integrated into one structure. The integrated structure comprises the motor 14, the controller 12, the electromagnetic valve 31 and the connector 32. When the controller 12 determines that the vehicle is in the special working condition, the motor 14 increases the oil pressure of the brake pipe and the brake 133, and applies the brake pressure to the wheels. According to the actual load of the vehicle, the rear brake 1332 can apply the required brake pressure to the rear wheels to stop the vehicle, or the brake as a whole can apply the required brake pressure to the four wheels to stop the vehicle, so as to ensure that the vehicle can be parked on the slope without continuing to slide down the slope, and to avoid traffic accidents and other dangers. When the warning signal of the vehicle sliding down the slope disappears, the controller 12 releases the brake pressure, so as to ensure that the vehicle can start smoothly.

[0058] According to the method of the second aspect of the present application, the motor 14 is a direct current motor, the brake fluid delivery flow is greater than 3.5 ml / s, and the wheel cylinder pressure increases from zero to 10 MPa within 1 s. It should be noted that under the condition of meeting the requirements, the smaller the wheel cylinder pressure is, the better. If the flow is too large, the master cylinder pressure fluctuates greatly, and the entire volume, noise and cost increase.

[0059] According to the vehicle sliding down the slope alarm brake method of the present application, the controller 12 is provided with corresponding logic, which can provide the alarm to the instrument 11 and start the vehicle brake function. The method is simple, accurate, can effectively reduce the occurrence of vehicle sliding down the slope accidents, and is safe and reliable.

[0060] The third aspect of the present application discloses a vehicle, which adopts the vehicle sliding down the slope alarm brake device 1 of any one of the first aspect of the present application, and can improve the safety of the vehicle and ensure that the vehicle will not cause traffic accidents due to sliding down the slope in the working conditions of starting on the slope and parking on the slope.

[0061] Please note that the technical features of the above embodiments can be combined in any manner, and for the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not contradict each other, they should be considered as within the scope of the present disclosure. The above embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but should not be understood as a limitation on the patent scope of the present application. It should be noted that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these are within the scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A vehicle coasting alarm braking device, characterized in that, comprising an instrument, a controller, a service brake circuit system, a motor and a coasting alarm signal module; the instrument, the motor, the service brake circuit system and the coasting alarm signal module are electrically connected with the controller respectively; the coasting alarm signal module comprises a parking signal module, a gear signal module and a wheel speed signal module, the parking signal module generates a parking signal through the whole vehicle CAN network signal acquisition, the gear signal module generates a gear signal through the whole vehicle CAN network signal acquisition, the wheel speed signal module generates a wheel speed signal through a wheel speed sensor, and the parking signal, the gear signal and the wheel speed signal constitute a coasting alarm signal; the controller is used for collecting the coasting alarm signal and starting the motor and the service brake circuit system; the instrument is used for issuing an alarm warning to the driver after the controller issues the coasting alarm signal; the motor is used for starting the service brake circuit system to brake the vehicle after the controller issues the coasting alarm signal; the vehicle coasting alarm braking device is used for vehicle coasting alarm, comprising: the controller collects the parking signal, the gear signal and the wheel speed signal; the controller performs logical judgment, sends an alarm signal to the instrument in the case of determining that the vehicle is in a special working condition, and issues a coasting alarm signal to the driver by the instrument; at the same time, the motor is started to apply brake pressure to the service brake circuit system to control the vehicle to brake; after the vehicle is braked, the coasting alarm signal disappears, and the controller releases the brake pressure; the special working condition comprises an uphill working condition and a downhill working condition; in the uphill working condition, when the parking signal is valid, the gear signal is in neutral, and the wheel speed signal is a backward rotation signal, the instrument issues an alarm; when the parking signal is valid, the gear signal is in drive, and the wheel speed signal is a backward rotation signal, the instrument issues an alarm; when the parking signal is invalid, the gear signal is in neutral, and the wheel speed signal is a backward rotation signal, the instrument issues an alarm; when the parking signal is invalid, the gear signal is in drive, and the wheel speed signal is a backward rotation signal, the instrument issues an alarm; in the downhill working condition, when the parking signal is valid, the gear signal is in neutral, and the wheel speed signal is a forward rotation signal, the instrument issues an alarm; when the parking signal is valid, the gear signal is in reverse, and the wheel speed signal is a forward rotation signal, the instrument issues an alarm; when the parking signal is invalid, the gear signal is in neutral, and the wheel speed signal is a forward rotation signal, the instrument issues an alarm; when the parking signal is invalid, the gear signal is in reverse, and the wheel speed signal is a forward rotation signal, the instrument issues an alarm; the service brake circuit system comprises a brake pedal, a total pump with a booster, a brake force controller and a brake; the motor and the controller are a controller and motor integrated structure, the controller and motor integrated structure comprises the motor, the controller, an electromagnetic valve and a connector; When the controller determines that the vehicle is in the special working condition, the motor increases the oil pressure of the brake pipe of the electromagnetic valve structure and the brake to exert the brake pressure on the wheel.

2. The roll-back warning brake device for a vehicle according to claim 1, characterized by The wheel speed sensor is oppositely installed with the gear ring to form forward rotation signal and backward rotation signal.

3. The roll-back warning brake device for a vehicle according to claim 1, wherein The motor is a direct current motor, the brake fluid delivery flow of the motor is greater than 3.5ml / s, and the wheel cylinder pressure is increased from zero to 10MPa within 1s.

4. A vehicle characterized by comprising: The vehicle warning brake device for coasting down a slope comprises the vehicle warning brake device for coasting down a slope according to any one of claims 1-2.

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