A water escape system and device

Abstract

An embodiment of the present invention provides a water escape system and device. The water escape system includes a processing unit, a pressure relief actuator and a body controller. The processing unit is used to obtain pressure information of a vehicle to determine the water depth and / or water state of the vehicle, and control the pressure relief actuator and the body controller to relieve pressure on the vehicle based on the water state and water depth of the vehicle, so that the vehicle can ultimately maintain a pressure balance inside and outside the vehicle while forming a cavity inside the vehicle, which is convenient for opening doors and / or windows and increasing the success rate of water escape.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a water escape system and a water escape device. Background Art

[0002] With the development of the automobile industry, the safety performance of automobiles has attracted more and more attention. Among them, the accident of a car falling into water is a serious safety issue. Once it occurs, the consequences are often very serious. Therefore, modern vehicle design pays more and more attention to safety, including the ability to escape when the vehicle falls into water. Vehicle overboard escape refers to a series of methods used to ensure that passengers can quickly and safely escape and get rescued when a car or other vehicle accidentally falls into water. Modern vehicle design pays more and more attention to safety, including the ability to escape when the vehicle falls into water.

[0003] Nowadays, vehicles are usually equipped with safety hammers, detachable headrests, etc., which can be used by passengers to break windows and help escape, which can help reduce risks and injuries to a certain extent. However, this method has the following disadvantages: due to the different pressures inside and outside the car, it is not conducive to opening doors and windows to escape, and escaping by forcibly breaking windows will cause secondary injuries to passengers.

[0004] Therefore, how to quickly and effectively help passengers escape after a car falls into water is an urgent problem to be solved in the fields of automotive safety equipment, automotive control systems, and automotive emergency rescue equipment. Summary of the invention

[0005] In view of the above problems, embodiments of the present invention are proposed to provide a water escape system and a water escape device that overcome the above problems or at least partially solve the above problems.

[0006] According to a first aspect of the present invention, a drowning escape system is provided, comprising a processing unit, a pressure relief actuator and a vehicle body controller, wherein the processing unit is used to:

[0007] Obtain pressure information on different planes of the vehicle;

[0008] Determine the water depth and / or water state of the vehicle according to the pressure information;

[0009] Based on the water-falling depth and the water-falling state, the pressure relief actuator and the vehicle body controller relieve pressure on the vehicle to balance the pressure inside and outside the vehicle.

[0010] Optionally, the vehicle comprises at least four pressure sensors, wherein the pressure sensors are arranged at different positions of the vehicle; and the processing unit is configured to:

[0011] The pressure information of the different planes is obtained based on the pressure information of the corresponding position of the pressure sensor.

[0012] Optionally, the pressure information includes at least: a pressure value at a position corresponding to the pressure sensor, a pressure change rate at a position corresponding to the pressure sensor, and coordinate information of the pressure sensor in a vehicle coordinate system;

[0013] The processing unit is used for:

[0014] When the pressure values ​​of at least two of the pressure sensors of the vehicle are different, one of the pressure sensors is selected to extend toward the horizontal plane to create a normal line, and the intersection of the normal line and the horizontal plane is used as the origin of the horizontal plane coordinates to establish a horizontal plane coordinate system;

[0015] Determining the depth coordinate of the pressure sensor in the horizontal plane coordinate system;

[0016] Based on the depth coordinates, coordinate information in the vehicle coordinate system is converted and calculated to obtain corresponding coordinate information in the horizontal plane coordinate system;

[0017] Determine the water depth of the vehicle according to the coordinate information in the horizontal plane coordinate system;

[0018] The water falling state is determined according to the pressure change rate and the pressure value.

[0019] Optionally, the processing unit is used to:

[0020] The water-falling state is determined based on a numerical relationship between the pressure value and a preset pressure threshold, and / or a numerical relationship between the pressure change rate and a preset pressure change rate threshold.

[0021] Optionally, the root processing unit is used to:

[0022] When the pressure values ​​at each position are all less than the preset pressure threshold, and the pressure change rate at each position is less than the preset pressure change rate threshold, it is determined that the vehicle's water-falling state is a normal land driving state;

[0023] When only the pressure value at the preset position is greater than the preset pressure threshold, and the pressure change rate at each position is less than the preset pressure change rate threshold, determining that the vehicle is in a wading state;

[0024] When only the pressure value at the preset position is greater than the preset pressure threshold, and the pressure change rate at each position is greater than the preset pressure change rate threshold, it is determined that the vehicle is in the water-falling state as entering the wading state;

[0025] When the pressure value at each position is greater than the pressure threshold, and the pressure change rate at each position is greater than the preset pressure change rate threshold, it is determined that the vehicle is in a water-falling state;

[0026] When the pressure value at each position is greater than the preset pressure threshold, and the pressure change rate at each position is less than the preset pressure change rate threshold, it is determined that the vehicle is in a stable state after falling into water.

[0027] Optionally, the processing unit is used to:

[0028] Obtaining the water drop depth, and dividing the water drop depth into different depth ranges;

[0029] Formulate a pressure relief strategy according to the water-falling state and the depth range;

[0030] Based on the water falling state, the pressure relief actuator and the vehicle body controller execute the corresponding pressure relief strategy to balance the pressure inside and outside the vehicle.

[0031] Optionally, the depth range includes: a first depth range, a second depth range, and a third depth range; the vehicle includes at least four pressure relief valves, and the pressure relief valves are arranged within a preset range of the pressure sensor;

[0032] The processing unit is used for:

[0033] When the vehicle is in a normal land driving state or a wading state, the pressure relief actuator and the body controller close the pressure relief valve within the third depth range;

[0034] When the vehicle is in a wading state or falling into water, the pressure relief actuator and the vehicle body controller close the pressure relief valves in the first depth range, the second depth range, and the third depth range;

[0035] When the vehicle is in a stable state after falling into water, the pressure relief actuator and the body controller close the pressure relief valves in the first depth range and the second depth range, and open the pressure relief valve in the third depth range.

[0036] Optionally, the processing unit is used to:

[0037] Determine a maximum water drop depth and a minimum water drop depth according to the water drop depth of the pressure relief valve, and set a first weight and a second weight, wherein the first weight is less than the second weight, and the sum of the first weight and the second weight is 1;

[0038] Determine the depth data obtained by adding the product of the maximum water-falling depth and the second weight to the product of the minimum water-falling depth and the first weight as the first depth threshold;

[0039] Determine the depth data obtained by adding the product of the maximum water-falling depth and the first weight to the product of the minimum water-falling depth and the second weight as the second depth threshold;

[0040] Determine a depth range from the first depth threshold to the maximum water drop depth as a first depth range;

[0041] Determine a depth range between the second depth threshold and the first depth threshold as a second depth range;

[0042] A depth range between the minimum water entry depth and the second depth threshold is determined as a third depth range.

[0043] According to a second aspect of the present invention, there is provided a water escape device, which is applied to a water escape system. The water escape system comprises a connected processing unit, a pressure relief actuator and a vehicle body controller. The device comprises:

[0044] An information acquisition module, used to obtain pressure information of different planes of the vehicle;

[0045] A water-falling depth and water-falling state determining module, used to determine the water-falling depth and / or water-falling state of the vehicle according to the pressure information;

[0046] The pressure relief execution module is used to enable the pressure relief actuator and the body controller to relieve pressure on the vehicle based on the water falling depth and the water falling state, so as to balance the pressure inside and outside the vehicle.

[0047] Optionally, the information acquisition module is electrically connected to the water falling depth and water falling state determination module, and the water falling depth and water falling state determination module is electrically connected to the pressure relief execution module; the information acquisition module includes at least four pressure sensors, and the pressure sensors are spatially arranged, and at least the pressure information of the vehicle floor needs to be acquired; the pressure relief execution module includes at least four pressure relief valves, and the pressure relief valves and the pressure sensors are arranged in the same manner.

[0048] The embodiments of the present invention include the following advantages:

[0049] In an embodiment of the present invention, the processing unit is used to obtain the pressure information of the vehicle to determine the vehicle's falling depth and / or falling state, and control the pressure relief actuator and the body controller to relieve the pressure of the vehicle based on the vehicle's falling state and falling depth, so that the vehicle can ultimately maintain the pressure balance inside and outside the vehicle while forming a cavity inside the vehicle, which is convenient for opening the doors and / or windows and increasing the success rate of escaping from falling into water.

[0050] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0052] Figure 1 It is a structural schematic diagram of a water escape system of the present invention;

[0053] Figure 2 is a schematic diagram of the spatial arrangement of the pressure sensor in the vehicle coordinate system provided by an embodiment of the present invention;

[0054] Figure 3 is a schematic diagram of a vehicle falling into water provided by an embodiment of the present invention;

[0055] Figure 4 is a system control schematic diagram of a drowning escape system provided by an embodiment of the present invention;

[0056] Figure 5 It is a structural block diagram of an embodiment of a device for escaping from water according to the present invention. DETAILED DESCRIPTION

[0057] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0058] The terms "first", "second", etc. in the specification and claims of the present invention are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0059] In conjunction with the accompanying drawings, a water escape system and device provided by an embodiment of the present invention are described in detail through specific embodiments and application scenarios.

[0060] Nowadays, vehicles are usually equipped with safety hammers, detachable headrests, etc., which can be used by passengers to break windows and help escape, which can help reduce risks and injuries to a certain extent. However, this method has the following disadvantages: due to the different pressures inside and outside the car, it is not conducive to opening doors and windows to escape, and escaping by forcibly breaking windows will cause secondary injuries to passengers.

[0061] The embodiment of the present invention determines the water depth and / or water state of the vehicle by acquiring the pressure information of the vehicle, and controls the vehicle to release pressure based on the water state and water depth of the vehicle, so that the vehicle can eventually maintain the pressure balance inside and outside the vehicle while forming a cavity inside the vehicle, thereby increasing the success rate of occupants' escape from falling into the water.

[0062] Reference Figure 1 , shows a schematic structural diagram of a drowning escape system of the present invention, the drowning escape system comprises a processing unit, a pressure relief actuator and a vehicle body controller, the processing unit is used to:

[0063] Obtain pressure information on different planes of the vehicle;

[0064] The processing unit can obtain pressure information on different planes of the vehicle by receiving pressure information collected by pressure sensors arranged at different horizontal positions of the vehicle.

[0065] Determine the water depth and / or water state of the vehicle according to the pressure information;

[0066] When a vehicle falls into water, the depths of different parts of the vehicle in the water are inconsistent, so the pressures collected by the pressure sensors are different. Based on the pressure data and pressure change rate collected by the pressure sensors at different locations, the current state of the vehicle in the water can be determined. The state of the vehicle falling into water can be determined based on the current state of different parts of the vehicle in the water.

[0067] Based on the water-falling depth and the water-falling state, the pressure relief actuator and the vehicle body controller relieve pressure on the vehicle to balance the pressure inside and outside the vehicle.

[0068] By understanding the state of the vehicle falling into water, the equipment within different water-falling depth ranges can be controlled to release pressure in a targeted manner to adjust the pressure inside the vehicle, so that the vehicle can ultimately maintain a pressure balance inside and outside the vehicle while forming a cavity inside the vehicle to facilitate the user's escape after the vehicle falls into water.

[0069] An embodiment of the present invention provides a water escape system, in which a processing unit is used to obtain pressure information of a vehicle to determine the water depth and / or water state of the vehicle, and based on the water state and water depth of the vehicle, a pressure relief actuator and a body controller are controlled to relieve pressure on the vehicle, so that the vehicle can ultimately maintain a pressure balance inside and outside the vehicle while forming a cavity inside the vehicle, making it easier to open doors and / or windows, thereby increasing the success rate of water escape.

[0070] In one embodiment of the present invention, the vehicle comprises at least four pressure sensors, wherein the pressure sensors are arranged at different positions of the vehicle; and the processing unit is used to:

[0071] The pressure information of the different planes is obtained based on the pressure information of the corresponding position of the pressure sensor.

[0072] In the water escape system, the pressure sensor can continuously send pressure data to the processing unit. When the vehicle falls into the water, the pressure data detected by the pressure sensors at different depths of the vehicle are inconsistent due to the inconsistent depths of different parts of the car in the water.

[0073] In practical applications, multiple pressure sensors may be arranged in a vehicle in a spatial arrangement. In this embodiment, it is necessary to detect pressure information at at least four positions, and these four positions cannot be located in the same plane. When the number is four, the pressure sensor arrangement may be performed with reference to Layout 1 and / or Layout 2:

[0074] In Layout 1: Position 1 - where the cockpit floor and the front surround meet, at the corner of the front surround and the floor below the dashboard; Position 2 - where the cockpit floor and the rear surround meet, that is, on the rear seat floor; Position 3 - near the top of the left door, such as near the top of the left B-pillar; Position 4 - near the top of the left door, such as near the top of the right B-pillar.

[0075] In Layout 2: Position 1 - middle and rear part of the floor; Position 2 - on the driver's door; Position 3 - on the front passenger door; Position 4 - near the rear windshield.

[0076] When the number of pressure sensors is 6, refer to layout 3 for pressure sensor arrangement;

[0077] In Layout 3: Position 1 - front of the cabin; Position 2 - rear of the cabin; Position 3 - near the left door, such as near the left B-pillar; Position 4 - near the left door, such as near the right B-pillar; Position 5 - middle of the floor; Position 6 - on the ceiling.

[0078] Reference Figure 2 , Figure 2 Schematic diagram of the spatial arrangement of pressure sensors in a vehicle coordinate system provided by an embodiment of the present invention:

[0079] Position S1 is the pressure sensor at the front of the cabin; Position S2 is the pressure sensor at the rear of the cabin; Position S3 is the pressure sensor near the left door, such as the pressure sensor near the left B-pillar; Position S4 is the pressure sensor near the left door, such as the pressure sensor near the right B-pillar; Position S5 is the pressure sensor in the middle of the floor; Position S6 is the pressure sensor on the ceiling. When the number of pressure sensors is greater than 6, additional layouts can be performed on the basis of the above recommended layouts.

[0080] Reference Figure 3 , Figure 3 A schematic diagram of a vehicle falling into water provided in an embodiment of the present invention:

[0081] After the vehicle falls into the water, the pressure sensors at different locations are at different depths in the water. , the water pressure detected by the pressure sensors at different depths of the vehicle is inconsistent, where: P is the pressure; is the density; g is the weight of the vehicle; H is the depth of the water.

[0082] In one embodiment of the present invention, the pressure information at least includes: a pressure value at a position corresponding to the pressure sensor, a pressure change rate at a position corresponding to the pressure sensor, and coordinate information of the pressure sensor in a vehicle coordinate system;

[0083] The processing unit is used for:

[0084] When the pressure values ​​of at least two of the pressure sensors of the vehicle are different, one of the pressure sensors is selected to extend toward the horizontal plane to create a normal line, and the intersection of the normal line and the horizontal plane is used as the origin of the horizontal plane coordinates to establish a horizontal plane coordinate system;

[0085] Determining the depth coordinate of the pressure sensor in the horizontal plane coordinate system;

[0086] Based on the depth coordinates, coordinate information in the vehicle coordinate system is converted and calculated to obtain corresponding coordinate information in the horizontal plane coordinate system;

[0087] Determine the water depth of the vehicle according to the coordinate information in the horizontal plane coordinate system;

[0088] The water falling state is determined according to the pressure change rate and the pressure value.

[0089] In an embodiment of the present invention, a vehicle coordinate system C-xyz is established when the vehicle is parked on a horizontal ground. The rear of the vehicle may be taken as the positive direction of the X-axis, the right as the positive direction of the Y-axis, and the upward as the positive direction of the Z-axis. The origin and direction of this coordinate system may also be defined by other definitions as long as the relative position and posture of the vehicle can be determined. This application does not make any specific limitation on this.

[0090] The coordinates of the n sensors in the coordinate system are: , , ...... ;

[0091] The coordinates of the m pressure relief valves in the coordinate system are: , , ...... ;

[0092] In the vehicle body coordinate system, the above coordinates are all known, and the corresponding pressures are P1, P2, P3, ... Pn. When the vehicle does not fall into the water, the pressures of each sensor are almost equal.

[0093] After the vehicle falls into the water, the horizontal plane is the XOY plane of the horizontal plane coordinate system C`-x`y`z`, and a certain falling point is The position of the point is extended to the XOY plane of the horizontal coordinate system C`-x`y`z` to form a normal line. The intersection of the normal line and the XOY plane is the origin O`. The projection of the rear of the car on the horizontal plane is the positive direction of the X` axis. If at this time The depth relative to the horizontal plane is (This value is negative underwater), then the coordinates in the horizontal plane coordinate system are The coordinates of any other m-th sensor are expressed as: ;The coordinates of any other nth pressure relief valve are expressed as: ;

[0094] According to the definition of two spatial rectangular coordinate systems, the vehicle has no yaw angle relative to the horizontal coordinate system, that is, the yaw angle is 0, and the pitch angle is α and the roll angle is β. Therefore, we only need to confirm the origin depth H0, the pitch angle α and the roll angle β to determine the horizontal plane coordinate system C`-x`y`z`.

[0095] When a vehicle falls into water, if the depth coordinates of three or more sensors are read and the point where one of the points is projected onto the horizontal plane is used as the origin of the coordinates, the horizontal plane coordinate system can be fully confirmed. Through the conversion calculation of the coordinate system, the coordinate value of any point on the vehicle in the horizontal plane coordinate system can be obtained. Thus, the depth of the point falling into water can be confirmed.

[0096] In one embodiment of the present invention, the processing unit is used to:

[0097] The water-falling state is determined based on a numerical relationship between the pressure value and a preset pressure threshold, and / or a numerical relationship between the pressure change rate and a preset pressure change rate threshold.

[0098] In an embodiment of the present invention, the pressure sensor continuously sends a pressure signal to the processing unit. When a vehicle falls into water, due to the inconsistent depths of different parts of the vehicle in the water, the pressure values ​​detected by the pressure sensors at different depths of the vehicle are calculated according to Formula 1, and the state of the vehicle in the water can be determined.

[0099] Formula 1 is:

[0100]

[0101] Where: P is the pressure; is the density; g is the weight of the vehicle; H is the depth of the water.

[0102] The pressure value threshold is related to the vehicle model and the cabin volume. For a general passenger car, the thinnest part of the cabin space is about 1 meter, that is, when the depth of falling into the water reaches 1 meter, it is very likely to cause danger. In the embodiment of the present invention, a 20% margin is reserved, so the pressure value threshold Defined as:

[0103]

[0104] After the vehicle falls into water, the pressure change rate of the pressure sensors at different depths of the vehicle can be calculated according to Formula 2.

[0105] Formula 2 is:

[0106]

[0107] in: is the pressure change rate; is the density; g is the weight of the vehicle; The depth of the vehicle sinking into the water within a limited time; The time limit for a vehicle to fall into water.

[0108] Since the slope of a common road for entering a water-forged road is generally not greater than 15°, the speed of a vehicle under such a water-filled road condition generally does not exceed 20 km / h. Therefore, in the embodiment of the present invention, the vehicle enters a water-forged road with a slope of 15° at a speed of 20 km / h. In practical applications, the parameters can be adjusted or the coefficients can be increased according to actual product requirements. Since the engine compartment is in front of the vehicle, the influence of the water flow speed in front on the sensor is ignored, and thus the pressure change rate threshold can be calculated according to Formula 3.

[0109] Formula three is:

[0110]

[0111] in: is the pressure change rate threshold; is the density; g is the weight of the vehicle; is the sinking depth of the vehicle within a limited time; v is the volume of the vehicle falling into the water; The time limit for a vehicle to fall into water.

[0112] In practical applications, the pressure value threshold and the pressure change rate threshold can be adjusted or the coefficient can be increased according to actual product requirements, and this application does not make specific limitations on this.

[0113] The processing unit can compare the pressure values ​​detected by the pressure sensors at different depths of the vehicle and the calculated pressure change rate threshold with the pressure value threshold and the pressure change rate threshold respectively, thereby more accurately judging the state of the vehicle falling into the water.

[0114] In one embodiment of the present invention, the root processing unit is used to:

[0115] When the pressure values ​​at each position are all less than the preset pressure threshold, and the pressure change rate at each position is less than the preset pressure change rate threshold, it is determined that the vehicle's water-falling state is a normal land driving state;

[0116] When only the pressure value at the preset position is greater than the preset pressure threshold, and the pressure change rate at each position is less than the preset pressure change rate threshold, determining that the vehicle is in a wading state;

[0117] When only the pressure value at the preset position is greater than the preset pressure threshold, and the pressure change rate at each position is greater than the preset pressure change rate threshold, it is determined that the vehicle is in the water-falling state as entering the wading state;

[0118] When the pressure value at each position is greater than the pressure threshold, and the pressure change rate at each position is greater than the preset pressure change rate threshold, it is determined that the vehicle is in a water-falling state;

[0119] When the pressure value at each position is greater than the preset pressure threshold, and the pressure change rate at each position is less than the preset pressure change rate threshold, it is determined that the vehicle is in a stable state after falling into water.

[0120] The pressure change rate is calculated by judging the pressure values ​​collected by the pressure sensors at each position and comparing them with the pressure value thresholds. and pressure change rate threshold For comparison, the vehicle falling into water states are divided into: normal land driving state, wading state, entering wading state, falling into water state, and stable state after falling into water.

[0121] When the pressure value p at each position is less than the preset pressure threshold , and the pressure change rate at each position is less than the pressure change rate threshold , it is judged that the vehicle is in a normal land driving state;

[0122] When only the pressure value p at the preset position is greater than the pressure value threshold , and the pressure change rate at each position Less than the pressure change rate threshold , it is determined that the vehicle is in a wading state. In the embodiment of the present invention, the preset position can be determined as the position of the pressure sensor at the bottom of the vehicle. In practical applications, it can be adjusted as needed, and this application does not make specific limitations on this.

[0123] When only the pressure value p at the preset position is greater than the pressure value threshold , and the pressure change rate at each position Greater than the pressure change rate threshold , it is judged that the vehicle is in a wading state;

[0124] When the pressure value p collected by the pressure sensor is greater than the pressure value threshold , pressure change rate Less than the rate of change of pressure , it is judged that the vehicle is in a stable state after falling into water.

[0125] The pressure change rate is calculated by the pressure values ​​collected by the pressure sensors at each position and compared with the pressure value threshold and pressure change rate threshold By comparison, we can accurately judge the state of the vehicle in the water after it falls into the water, and then, according to the state of the vehicle falling into the water, accurately control the devices in different parts of the vehicle to release pressure and effectively control the pressure balance inside and outside the vehicle.

[0126] In one embodiment of the present invention, the processing unit is used to:

[0127] Obtaining the water drop depth, and dividing the water drop depth into different depth ranges;

[0128] Formulate a pressure relief strategy according to the water-falling state and the depth range;

[0129] Based on the water falling state, the pressure relief actuator and the vehicle body controller execute the corresponding pressure relief strategy to balance the pressure inside and outside the vehicle.

[0130] In the embodiment of the present invention, the water depth is divided into different depth ranges, and different pressure relief strategies are formulated based on different depth ranges. The water state of the vehicle is combined with the depth range of the water depth where the vehicle is located, so that the pressure relief actuator and the body controller execute the corresponding pressure relief strategy, and the pressure relief valves in different depth ranges are controlled to release pressure according to different pressure relief strategies. By obtaining the water depth and monitoring it in real time, the water escape system can quickly respond to the situation of the vehicle falling into the water, and promptly start the pressure relief strategy to ensure the pressure balance inside and outside the vehicle.

[0131] In an optional embodiment of the present invention, in addition to controlling the pressure relief valve in the corresponding depth range, the pressure relief strategy can also control different vehicle components based on the vehicle body controller, including at least doors, windows, and sunroofs.

[0132] In one embodiment of the present invention, the depth range includes: a first depth range, a second depth range, and a third depth range; the vehicle includes at least four pressure relief valves, and the pressure relief valves are arranged within a preset range of the pressure sensor;

[0133] The processing unit is used for:

[0134] When the vehicle is in a normal land driving state or a wading state, the pressure relief actuator and the body controller close the pressure relief valve within the third depth range;

[0135] When the vehicle is in a wading state or falling into water, the pressure relief actuator and the vehicle body controller close the pressure relief valves in the first depth range, the second depth range, and the third depth range;

[0136] When the vehicle is in a stable state after falling into water, the pressure relief actuator and the body controller close the pressure relief valves in the first depth range and the second depth range, and open the pressure relief valve in the third depth range.

[0137] In an embodiment of the present invention, the depth range can be divided into a first depth range, a second depth range and a third depth range. When the vehicle is in a normal land driving state or a wading state, the pressure relief actuator closes the pressure relief valve in the third depth range; when the vehicle is in a wading state or falling into water, the pressure relief actuator closes the pressure relief valves in the first depth range, the second depth range and the third depth range; when the vehicle is in a stable state after falling into water, the pressure relief actuator closes the pressure relief valves in the first depth range and the second depth range, and opens the pressure relief valve in the third depth range. Through this embodiment, the water escape system can formulate personalized pressure relief strategies according to different water depths and vehicle states. The flexibility of this strategy helps to effectively balance the pressure in different situations, which can significantly improve the escape ability of passengers.

[0138] In an optional embodiment of the present invention, when the vehicle is in a wading state, if it is determined that the windows, doors, sunroof, etc. are not closed, a request instruction can also be sent to enable the body controller to close the doors, windows or sunroof, etc. within a third depth range; when the vehicle is falling into water or entering a wading state, a request can also be sent to enable the body controller to close the windows, sunroof, and doors within all depth ranges to avoid injury to passengers, while maintaining the airtightness of the vehicle to avoid rapid water filling; when the vehicle is in a stable state after falling into water, a request can also be sent to enable the body controller to close the windows, sunroof, and doors within the first depth range and the second depth range, and at the same time upload the vehicle data and send a rescue request to the T-Box (telematic processor), the T-Box sends the vehicle data, location information, rescue request, etc. to the server, waits for rescue, combines the vehicle with the Internet of Vehicles, uploads the accident data, requests professional teams for guidance and takes rescue measures to increase the chance of survival.

[0139] In one embodiment of the present invention, the processing unit is used to:

[0140] Determine a maximum water drop depth and a minimum water drop depth according to the water drop depth of the pressure relief valve, and set a first weight and a second weight, wherein the first weight is less than the second weight, and the sum of the first weight and the second weight is 1;

[0141] Determine the depth data obtained by adding the product of the maximum water-falling depth and the second weight to the product of the minimum water-falling depth and the first weight as the first depth threshold;

[0142] Determine the depth data obtained by adding the product of the maximum water-falling depth and the first weight to the product of the minimum water-falling depth and the second weight as the second depth threshold;

[0143] Determine a depth range from the first depth threshold to the maximum water drop depth as a first depth range;

[0144] Determine a depth range between the second depth threshold and the first depth threshold as a second depth range;

[0145] The depth range between the minimum water drop depth and the second depth threshold is determined as a third depth range.

[0146] When the vehicle falls into the water, the depth of each pressure relief valve can be calculated, i.e., zt1', zt2', ..., ztn', and grouped into the first depth range, the second depth range, and the third depth range. From the definition of the horizontal plane coordinates, it can be seen that the shallowest depth and the deepest depth of the pressure relief valve after falling into the water are the maximum and minimum values ​​of zt1', zt2', ..., ztn', respectively, and are recorded as and , and set the first weight and the second weight ,in: ,and ,Will is defined as the first depth threshold, Defined as the first depth threshold.

[0147] In this embodiment of the present invention, the first weight Set to 1 / 3, the second weight setting is 2 / 3, therefore, in the embodiment of the present invention, the first depth threshold = , the second depth threshold = .

[0148] The depth of water drop is divided into the following categories:

[0149] First depth range: ;

[0150] Second Depth Range: ;

[0151] Third depth range: ;

[0152] In practical applications, the first weight and the second weight can be adjusted according to actual product requirements. This application does not specifically limit the specific values ​​of the first weight and the second weight.

[0153] The depth of falling into water is divided into different depth ranges, and then the pressure relief valves within different depth ranges are controlled to release pressure. By formulating flexible pressure relief strategies, it helps to effectively balance the pressure inside and outside the car in different situations, allowing passengers to more easily open doors or windows to escape after falling into water.

[0154] In an optional embodiment of the present invention, after the vehicle is depressurized based on the depth and status of falling into water, the processing unit can also obtain user instructions from the user in the monitored vehicle to open the windows and / or doors to determine the user's status; when the pressure inside the vehicle reaches a balance with the water pressure outside the vehicle and the user's status meets preset conditions, the user is assisted in opening the windows and / or doors to escape.

[0155] When the vehicle falls into the water, the processing unit obtains user instructions for monitoring the user's continuous clicks and continuous door opening requests, such as user instructions triggered when the user pulls the door handle; it determines that the user is in a nervous state, and gives voice and text prompts to the user, reminding the user to be patient and follow the prompts. After the user does not have user instructions for continuous clicks and continuous door opening requests for more than 10 seconds, the user responds to the user's stable operation. After the user calms down, he can make subjectively selected instructions or measures according to the actual situation.

[0156] In actual application, under the action of water pressure, water is poured into the car through the pressure relief valve below. Since the upper pressure relief valve is closed, the air inside the car is in a closed state. When the air inside the car is compressed to balance with the water pressure outside the car, the water outside the car will stop pouring into the car. At this time, a certain breathing space is maintained in the car, and the pressure inside and outside the car is balanced. In this state, the pressure of the passengers is balanced, it is easy to open the door and there is breathing space. After the passengers are emotionally stable, they can subjectively issue user instructions. The processing unit enables the pressure relief actuator and the body controller to open specific pressure relief valves, windows, doors, or take other measures such as opening doors and smashing windows according to the user instructions. Since the pressure inside and outside the car is balanced at this time, the passengers subjectively choose the nearest, most convenient, or undamaged doors, windows, etc. as escape routes.

[0157] Reference Figure 4 , Figure 4 A schematic diagram of system control of a drowning escape system provided by an embodiment of the present invention:

[0158] In the embodiment of the present invention, the drowning escape system includes not only a processing unit, a pressure relief actuator and a vehicle body controller, but also a telematics processor T-Box;

[0159] The processing unit receives the pressure data collected by the pressure sensor group arranged on the vehicle, and controls the pressure relief valve arranged on the vehicle through the pressure relief actuator.

[0160] The pressure sensor group includes a plurality of sensors, the number of which is not less than 4, which are spatially arranged and distributed in various parts of the vehicle body, such as doors, windows, roof, etc. Specifically, the pressure sensor group is arranged in the vehicle according to the X-axis, Y-axis and Z-axis of the vehicle coordinate system.

[0161] The processing unit receives and processes the signal from the pressure sensor group. According to the preset program, when it is determined that the car is in a state of falling into water, an instruction is sent to the pressure relief actuator. The pressure relief actuator controls the operation of the pressure relief valve group according to the instruction.

[0162] The pressure relief valve group includes multiple pressure relief valves, not less than 4 in number, arranged in a space, and the best arrangement position is close to the sensor. After receiving the signal sent by the pressure sensor group, the corresponding pressure relief valve will be controlled to open according to the preset program to maintain the pressure balance inside and outside the car, which is convenient for opening the doors and windows. At the same time, the pressure relief valves at the corresponding positions are controlled to close, forming a certain cavity in the cabin to facilitate passengers to breathe and stay calm.

[0163] After the vehicle falls into the water, the processing unit obtains user commands for monitoring the user's continuous clicks and continuous door opening requests. For example, the user command is triggered when the user pulls the door handle, and then it is determined that the user is in a nervous state, and voice and text prompts are given to the user to remind the user to be patient and follow the prompts. After the user does not have user commands for continuous clicks and continuous door opening requests for more than 10 seconds, the user command for the user's stable operation is responded to. After the user calms down, he can make subjectively selected commands or measures according to the actual situation.

[0164] After the processing unit determines the vehicle status, it controls the body controller to perform a series of action controls according to the vehicle status, such as closing the windows, sunroof and doors when the vehicle falls into water to prevent passengers from being injured, while keeping the vehicle airtight to prevent rapid water inflow.

[0165] In addition, when the vehicle is in the water, the data can be uploaded through the telematics processor T-Box of the water escape system, and the vehicle can be contacted. If the contact is successful, the passengers can be remotely guided and comforted. At the same time, regardless of whether the vehicle can be contacted, the professional rescue team will be requested to rush to the rescue as soon as possible, and other measures will be taken.

[0166] It should be noted that, for the sake of simplicity, the system embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the described action sequence, because according to the embodiments of the present invention, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0167] Reference Figure 5 , shows a structural block diagram of an embodiment of a device for escaping from water according to the present invention, which may specifically include the following modules:

[0168] The information acquisition module 501 is used to acquire the pressure information of different planes of the vehicle;

[0169] A water-falling depth and water-falling state determining module 502, configured to determine the water-falling depth and / or water-falling state of the vehicle according to the pressure information;

[0170] The pressure relief execution module 503 is used to enable the pressure relief actuator and the body controller to relieve pressure on the vehicle based on the water falling depth and the water falling state, so as to balance the pressure inside and outside the vehicle.

[0171] In one embodiment of the present invention, the information acquisition module is electrically connected to the water falling depth and water falling state determination module, and the water falling depth and water falling state determination module is electrically connected to the pressure relief execution module; the information acquisition module includes at least four pressure sensors, and the pressure sensors are spatially arranged, and at least the pressure information of the vehicle floor needs to be acquired; the pressure relief execution module includes at least four pressure relief valves, and the pressure relief valves and the pressure sensors are arranged in the same manner.

[0172] In an embodiment of the present invention, the water escape device provided by the embodiment of the present invention determines the water depth and / or water state of the vehicle by acquiring the pressure information of the vehicle, and controls the vehicle to release pressure based on the water state and water depth of the vehicle, so that the vehicle can ultimately maintain the pressure balance inside and outside the vehicle while forming a cavity inside the vehicle, thereby increasing the success rate of occupants' escape from water.

[0173] As for the device embodiment, since it is basically similar to the system embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0174] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0175] Finally, it should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0176] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0177] The above is a detailed introduction to a water escape system and a water escape device provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A water escape system, characterized in that: The invention comprises a processing unit, a pressure relief actuator and a body controller, wherein the processing unit is used for: Obtaining pressure information of different planes of the vehicle, wherein the pressure information includes at least: a pressure value and a pressure change rate; Determining the water depth and / or water state of the vehicle according to the pressure information, including: determining the water state according to the pressure change rate and the pressure value; Based on the water falling depth and the water falling state, the pressure relief actuator and the body controller are caused to relieve pressure on the vehicle so that the pressure inside and outside the vehicle are balanced, which includes: obtaining the water falling depth and dividing the water falling depth into different depth ranges; formulating a pressure relief strategy according to the water falling state and the depth range; based on the water falling state, the pressure relief actuator and the body controller are caused to execute the corresponding pressure relief strategy so that the pressure inside and outside of the vehicle are balanced; the pressure relief strategy includes: controlling the pressure relief actuator and the body controller in the corresponding depth range to relieve pressure on the vehicle according to the water falling state.

2. The water escape system according to claim 1, characterized in that: The vehicle comprises at least four pressure sensors, wherein the pressure sensors are arranged at different positions of the vehicle; and the processing unit is used for: The pressure information of the different planes is obtained based on the pressure information of the corresponding position of the pressure sensor.

3. The water escape system according to claim 2, characterized in that: The pressure information at least includes: a pressure value at a position corresponding to the pressure sensor, a pressure change rate at a position corresponding to the pressure sensor, and coordinate information of the pressure sensor in a vehicle coordinate system; The processing unit is used for: When the pressure values ​​of at least two of the pressure sensors of the vehicle are different, one of the pressure sensors is selected to extend toward the horizontal plane to create a normal line, and the intersection of the normal line and the horizontal plane is used as the origin of the horizontal plane coordinates to establish a horizontal plane coordinate system; Determining the depth coordinate of the pressure sensor in the horizontal plane coordinate system; Based on the depth coordinates, coordinate information in the vehicle coordinate system is converted and calculated to obtain corresponding coordinate information in the horizontal plane coordinate system; The water depth of the vehicle is determined based on the coordinate information in the horizontal plane coordinate system.

4. The water escape system according to claim 3, characterized in that: The processing unit is used for: The water-falling state is determined based on a numerical relationship between the pressure value and a preset pressure threshold, and / or a numerical relationship between the pressure change rate and a preset pressure change rate threshold.

5. The water escape system according to claim 4, characterized in that: The processing unit is used for: When the pressure values ​​at each position are all less than the preset pressure threshold, and the pressure change rate at each position is less than the preset pressure change rate threshold, it is determined that the vehicle's water-falling state is a normal land driving state; When only the pressure value at the preset position is greater than the preset pressure threshold, and the pressure change rate at each position is less than the preset pressure change rate threshold, determining that the vehicle is in a wading state; When only the pressure value at the preset position is greater than the preset pressure threshold, and the pressure change rate at each position is greater than the preset pressure change rate threshold, it is determined that the vehicle is in the water-falling state as entering the wading state; When the pressure value at each position is greater than the pressure threshold, and the pressure change rate at each position is greater than the preset pressure change rate threshold, it is determined that the vehicle is in a water-falling state; When the pressure value at each position is greater than the preset pressure threshold, and the pressure change rate at each position is less than the preset pressure change rate threshold, it is determined that the vehicle is in a stable state after falling into water.

6. The water escape system according to claim 1, characterized in that: The depth range includes: a first depth range, a second depth range, and a third depth range; the vehicle includes at least four pressure relief valves, and the pressure relief valves are arranged within a preset range of the pressure sensor; The processing unit is used for: When the vehicle is in a normal land driving state or a wading state, the pressure relief actuator and the body controller close the pressure relief valve within the third depth range; When the vehicle is in a wading state or falling into water, the pressure relief actuator and the vehicle body controller close the pressure relief valves in the first depth range, the second depth range, and the third depth range; When the vehicle is in a stable state after falling into water, the pressure relief actuator and the body controller close the pressure relief valves in the first depth range and the second depth range, and open the pressure relief valve in the third depth range.

7. The water escape system according to claim 6, characterized in that: The processing unit is used for: Determine a maximum water drop depth and a minimum water drop depth according to the water drop depth of the pressure relief valve, and set a first weight and a second weight, wherein the first weight is less than the second weight, and the sum of the first weight and the second weight is 1; Determine the depth data obtained by adding the product of the maximum water-falling depth and the second weight to the product of the minimum water-falling depth and the first weight as the first depth threshold; Determine the depth data obtained by adding the product of the maximum water-falling depth and the first weight to the product of the minimum water-falling depth and the second weight as the second depth threshold; Determine a depth range from the first depth threshold to the maximum water drop depth as a first depth range; Determine a depth range between the second depth threshold and the first depth threshold as a second depth range; A depth range between the minimum water entry depth and the second depth threshold is determined as a third depth range.

8. A water escape device, characterized in that: Applied to a water escape system, the water escape system includes a connected processing unit, a pressure relief actuator and a body controller, and the device includes: An information acquisition module, used to acquire pressure information of different planes of the vehicle, wherein the pressure information at least includes: a pressure value and a pressure change rate; A water-falling depth and water-falling state determining module, used to determine the water-falling depth and / or water-falling state of the vehicle according to the pressure information, including: determining the water-falling state according to the pressure change rate and the pressure value; A pressure relief execution module is used to enable the pressure relief actuator and the body controller to relieve pressure on the vehicle based on the water falling depth and the water falling state, so as to balance the pressure inside and outside the vehicle, including: obtaining the water falling depth and dividing the water falling depth into different depth ranges; formulating a pressure relief strategy according to the water falling state and the depth range; based on the water falling state, enabling the pressure relief actuator and the body controller to execute the corresponding pressure relief strategy to balance the pressure inside and outside the vehicle; the pressure relief strategy includes: controlling the pressure relief actuator and the body controller in the corresponding depth range to relieve pressure on the vehicle according to the water falling state.

9. The water escape device according to claim 8, characterized in that: The information acquisition module is electrically connected to the water falling depth and water falling state determination module, and the water falling depth and water falling state determination module is electrically connected to the pressure relief execution module; the information acquisition module includes at least four pressure sensors, and the pressure sensors are spatially arranged, and at least the pressure information of the vehicle floor needs to be acquired; the pressure relief execution module includes at least four pressure relief valves, and the pressure relief valves and the pressure sensors are arranged in the same manner.

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