CN114312497A - Active restraint system and active restraint method for seat - Google Patents
Active restraint system and active restraint method for seat Download PDFInfo
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- CN114312497A CN114312497A CN202111539998.9A CN202111539998A CN114312497A CN 114312497 A CN114312497 A CN 114312497A CN 202111539998 A CN202111539998 A CN 202111539998A CN 114312497 A CN114312497 A CN 114312497A
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Abstract
The application discloses a seat active restraint system and an active restraint method, which relate to the technical field of automobile structure design, wherein the active restraint system also comprises a temperature sensor and a plurality of pressure sensors; the temperature sensor is arranged on the upper surface of the cushion; the vehicle-mounted ECU judges whether a passenger is on the seat or not, obtains the weight of the passenger, and obtains the height and the chest circumference of the passenger; the active restraint system further comprises an arm-embracing body, the seat further comprises a second backrest, and the arm-embracing body in a contraction state is arranged in the second backrest; when the vehicle-mounted ECU judges that a passenger is on the seat, the vehicle-mounted ECU controls the two arm bodies to extend out and embrace with proper height and opening degree. According to the active restraint system and the active restraint method, the original safety belt is replaced by the arm body, the driver or the passenger is actively stretched out to restrain, and the technical problem that the safety belt is easily forgotten in the prior art is solved.
Description
Technical Field
The application relates to the technical field of automobile structure design, in particular to a seat active restraint system and an active restraint method.
Background
At present, the fatality rate of the Chinese traffic accident is far higher than that of foreign traffic accidents, and the proportion of casualties of drivers is increased year by year. The main reasons are that the driver or the passenger has a weak safety protection consciousness, the safety protection facilities are not enough, and even the only safety belt is troublesome and is not tied. In the process of vehicle driving, the fastening of the safety belt is an important part for guaranteeing the traffic safety.
However, drivers or passengers are liable to forget to fasten the seat belt after getting on the vehicle, especially for drivers with bad driving habits and passengers with bad riding habits, and therefore, those skilled in the art are in need of designing an active restraint system.
Disclosure of Invention
Aiming at the defects in the prior art, the application aims to provide a seat active restraint system and an active restraint method, wherein an original safety belt is replaced by a holding arm body, when a driver or a passenger sits on a seat, the holding arm body actively stretches out to restrain the driver or the passenger, and the technical problem that the safety belt is easily forgotten in the prior art is solved.
In order to achieve the above purposes, the technical scheme is as follows: an active seat restraint system comprising an onboard ECU, the seat comprising a first backrest and a seat cushion; the active restraint system also comprises a temperature sensor and a plurality of pressure sensors which are connected with the vehicle-mounted ECU; the temperature sensors are arranged on the upper surface of the seat cushion, one part of the pressure sensors are arranged on the lower surface of the seat cushion, and the other part of the pressure sensors are densely distributed on the front surface of the first backrest in a matrix manner;
the vehicle-mounted ECU is used for judging whether a passenger is on the seat according to the temperature sensor and the pressure sensor positioned on the lower surface of the cushion, obtaining the weight of the passenger according to a signal fed back by the pressure sensor positioned on the lower surface of the cushion, and obtaining the height and the chest circumference of the passenger according to the pressure sensor positioned on the first backrest;
the seat also comprises a second backrest (2), and the second backrest (2) is tightly attached to the rear surface of the first backrest (1); the second backrest is internally provided with two arm bodies which can slide up and down and extend outwards, and when the two arm bodies extend out, the two arm bodies are in an encircling state; when the vehicle-mounted ECU judges that a passenger is on the seat, the vehicle-mounted ECU is used for controlling the two arm-embracing bodies to extend out with proper height and opening degree according to the calculated weight, height and chest circumference.
On the basis of the technical scheme, a trained neural network model is arranged in the vehicle-mounted ECU, and the neural network model is used for outputting height signals and opening signals of the two arm-embracing bodies according to input pressure signals fed back by the surface pressure sensor on the lower surface of the cushion and pressure signals of the pressure sensors densely distributed in the first backrest in a matrix manner.
On the basis of the technical scheme, the two arm-embracing bodies are arranged in a mirror symmetry manner; each arm body comprises a plurality of sections of hollow circular tubes, and two adjacent hollow circular tubes are clamped and fixed through movable circular buckles; the active restraint system also comprises an air compressor connected with the vehicle-mounted ECU, and the air compressor is connected to the insides of the rear ends of the two arm-holding bodies through a pipeline; when the vehicle-mounted ECU judges that a passenger is on the seat, the vehicle-mounted ECU controls the arm body to extend outwards through the air compressor.
On the basis of the technical scheme, the active restraint system further comprises an unlocking switch and a winch connected with the vehicle-mounted ECU, and the winch is connected to the inner wall of the hollow pipe at the foremost end of the arm-embracing body through a steel wire rope; when the unlocking switch is pressed, the vehicle-mounted ECU is used for controlling the arm-embracing body to retract through the winch and the steel wire rope.
On the basis of the technical scheme, the active restraint system further comprises an ignition device, a reactor and a collision sensor, wherein the collision sensor is arranged on the head, the tail and/or the side surface of the vehicle body of the vehicle and is connected with the vehicle-mounted ECU; the ignition device and the reactor are both positioned in the rear end of the arm body; the collision sensor is connected with the ignition device;
when the vehicle collides and the arm bodies are in a retraction state, the collision sensor is used for transmitting signals to the ignition device, the ignition device ignites the reactor, and the reactor generates a large amount of gas to push the two arm bodies to pop out.
On the basis of the technical scheme, a rectangular frame is arranged in the second backrest, and two vertical rotating shaft sliding rails capable of vertically rotating are arranged on the rectangular frame; the vertical rotating shaft sliding rail is provided with a sliding groove, and the rear end of each arm body is slidably arranged in the sliding groove of one vertical rotating shaft sliding rail.
The application also discloses an active restraint method based on the seat active restraint system, which comprises the following steps:
the vehicle-mounted ECU judges whether a passenger sits on the seat according to the temperature sensor and the pressure sensor on the lower surface of the cushion; if not, ending; if so, the vehicle-mounted ECU obtains the weight of the passenger according to a signal fed back by the pressure sensor on the lower surface of the cushion, and obtains the height and the chest circumference of the passenger according to the pressure sensor of the first backrest;
the vehicle-mounted ECU controls the two arm-embracing bodies to slide up and down to a proper height according to the height, the weight and the chest circumference information, and extends out according to a proper opening degree.
On the basis of the technical scheme, a trained neural network model is arranged in the vehicle-mounted ECU, the neural network model is used for outputting a height signal and an opening degree signal according to an input pressure signal fed back by the surface pressure sensor on the lower surface of the cushion and the pressure signals of the pressure sensors densely distributed in the first backrest in a matrix mode, and the vehicle-mounted ECU controls the arm-holding body to slide up and down and stretch out according to the height signal and the opening degree signal.
On the basis of the technical scheme, the two arm-embracing bodies are arranged in a mirror symmetry manner; each arm body comprises a plurality of sections of hollow circular tubes, and two adjacent hollow circular tubes are clamped and fixed through movable circular buckles; the active restraint system also comprises an air compressor connected with the vehicle-mounted ECU, and the air compressor is connected to the insides of the rear ends of the two arm-holding bodies through a pipeline;
when the vehicle-mounted ECU determines that a passenger is on the seat, the vehicle-mounted ECU controls the arm body to extend outwards through the air compressor;
the active restraint system also comprises an unlocking switch and a winch connected with the vehicle-mounted ECU, and the winch is connected to the inner wall of the hollow pipe at the foremost end of the arm-embracing body through a steel wire rope; when the unlocking switch is pressed, the vehicle-mounted ECU controls the armful arm body to retract through the winch and the steel wire rope.
On the basis of the technical scheme, the active restraint system further comprises an ignition device, a reactor and a collision sensor connected with the vehicle-mounted ECU, wherein the collision sensor is arranged at the head, the tail and/or the side face of the vehicle body of the vehicle; the ignition device and the reactor are both positioned in the rear end of the arm body; the collision sensor is connected with the ignition device;
when the vehicle collides and the arm bodies are in a retraction state, the collision sensor transmits a signal to the ignition device, the ignition device ignites the reactor, and the reactor generates a large amount of gas to push the two arm bodies to pop out.
The beneficial effect that technical scheme that this application provided brought includes:
1. the active restraint system comprises a temperature sensor and a plurality of pressure sensors; the temperature sensor is arranged on the upper surface of the cushion, one part of the pressure sensor is arranged on the lower surface of the cushion, and the other part of the pressure sensor is arranged on the front surface of the first backrest. The vehicle-mounted ECU judges whether a passenger is on the seat or not according to signals of the temperature sensor and the pressure sensor positioned on the lower surface of the cushion; the vehicle-mounted ECU obtains the weight of the passenger according to the signal of the pressure sensor positioned on the lower surface of the cushion; the vehicle-mounted ECU obtains the height and the chest circumference of the passenger according to the signal of the front surface pressure sensor positioned on the first backrest; according to the weight, the height and the chest circumference information, the arm-embracing body is controlled to slide up and down to a proper position, and is opened and encircled at a proper opening degree; compared with the existing safety belt, the active restraint system is more active and positive, after a driver or a passenger takes the safety belt, the active restraint system actively carries out personalized tightening according to the height, the weight and the chest circumference of the driver or the passenger, the safety performance of a vehicle is improved, and the technological sense is improved; the original safety belt is replaced by the arm body, and the technical problem that the safety belt is easy to forget in the prior art is solved.
2. The active restraint system is characterized in that the two arm bodies are arranged in a left-right mirror symmetry mode, and when the two arm bodies (3) extend out, the two arm bodies are in an encircling state. The arm body comprises a plurality of hollow round pipes, and two adjacent hollow round pipes are clamped and fixed through movable round buckles. The active restraint system further comprises an air compressor, the air compressor is connected with the vehicle-mounted ECU, and the air compressor is connected to the inner portions of the rear ends of the two arm-embracing bodies through pipelines. The two arm bodies extend to form an approximately closed arc to alternately embrace the driver or the passenger to restrain the driver or the passenger on the seat. When the vehicle-mounted ECU judges that a passenger is on the seat, the vehicle-mounted ECU controls the air compressor to be started, high-pressure air is conveyed into the arm body, and the arm body extends and unfolds. The arm body is in a multi-section hollow circular tube shape, is matched with the air compressor to extend and unfold, is ingenious in design, and is subjected to extension control relative to a mechanical structure, so that the number of parts is greatly reduced, and the quality of the parts is reduced; and the high-pressure pneumatic extension mode shortens the extension time and improves the holding and restraining efficiency.
Furthermore, the active restraint system also comprises an unlocking switch and a winch connected with the vehicle-mounted ECU, and the winch is connected to the inner wall of the hollow pipe at the foremost end of the arm body through a steel wire rope. Specifically, the steel wire rope is positioned in the hollow pipe of the arm body. When the unlocking switch is pressed, the vehicle-mounted ECU receives an unlocking instruction, the vehicle-mounted ECU controls the winch to start, and the winch controls the arm-holding body to retract through the steel wire rope. The active restraint system comprises a process of controlling the arm body to stretch under a normal state, wherein an air compressor is matched with a winch, the air compressor is used for high-pressure pneumatic stretching, the winch is used for adding a steel wire rope and is pulled back through a steel wire, the matching is reasonable and ingenious, the number of parts of a traditional telescopic structure is greatly reduced, and the cost is reduced; and the active restraint system hoist engine and the air compressor machine of this application all can set up in the seat below, do not occupy second back inner space, and only trachea and wire rope are connected to second back inner structure, and spatial arrangement is loose, and high-efficient rational utilization has effectual space.
3. The active restraint system can control the arm body to stretch out and draw back under emergency except that the arm body is controlled to stretch out and draw back under the normal state. The active restraint system comprises an ignition device, a reactor and at least one collision sensor, wherein the collision sensor is arranged on the head, the tail and/or the side face of the vehicle body of the vehicle, and all the collision sensors are connected with the vehicle-mounted ECU. Ignition and reactor all are located the rear end of embracing the arm body inside, and ignition is used for detonating the reactor. The collision sensor is connected to the ignition device. When the vehicle collides, the collision sensor transmits a collision signal to the ignition device, and the ignition device starts and ignites the reactor; the reactor instantly generates a large amount of gas to push the two arm bodies to pop up instantly. The application discloses initiative restraint system, when driver or passenger do not embrace the arm body restraint and take place the collision accident, collision sensor sends signal to ignition, thereby power reactor, the reactor produces a large amount of gases in the twinkling of an eye, promote two and embrace the arm body and pop out in the twinkling of an eye, personal safety when driver and passenger take place the accident has been strengthened, initiative restraint system has replaced traditional vehicle's air bag and safety belt in other words, greatly reduced part quantity, design development cost has been reduced.
4. The utility model provides an initiative restraint system, the inside rectangular frame that has the metal of second back, perpendicular pivot slide rail both ends are rotatable to be installed in rectangular frame structure. Two vertical rotating shaft sliding rails are installed at the rear ends of the two embracing arm bodies one by one, and the plane where the two embracing arm bodies are located is perpendicular to the vertical rotating shaft sliding rails. The vertical rotating shaft sliding rail is provided with a sliding groove, and the rear end of the arm body can slide along the sliding groove. The active restraint system further comprises a plurality of motors connected with the vehicle-mounted ECU, and the rotation of the vertical rotating shaft slide rail relative to the rectangular frame and the sliding of the arm body relative to the vertical rotating shaft slide rail are controlled by the motors. The vehicle-mounted ECU controls the rotation angle of the vertical rotating shaft slide rail by controlling a corresponding motor, and changes the embracing opening degree of the two embracing arm bodies; the sliding height of the arm body relative to the vertical rotating shaft sliding rail is controlled, namely the height of the arm body is controlled, intelligent control over the arm body is achieved, and the arm body accords with ergonomics.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a block diagram of an active restraint system provided in an embodiment of the present application.
Fig. 2 is a side view of a clip arm body mounted to a seat according to an embodiment of the present disclosure.
Fig. 3 is a front view of a chair with a cantilever body according to an embodiment of the present disclosure.
Fig. 4 is a top view of the arm embracing body mounted on the seat according to the embodiment of the present application.
Reference numerals: 1. a first backrest; 2. a second backrest; 3. the arm-embracing body; 4. a cushion; 5. a motor; 6. a vertical rotating shaft slide rail.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, 2, 3 and 4, the present application discloses an embodiment of an active restraint system for a seat comprising an on-board ECU, the seat comprising a first backrest 1 and a seat cushion 4. The first backrest 1 is a traditional seat backrest, and the first backrest 1 meets all safety regulation requirements and comfort requirements of the seat.
The active restraint system also comprises a temperature sensor and a plurality of pressure sensors, and the temperature sensor and the pressure sensors are connected with the vehicle-mounted ECU. The vehicle-mounted ECU continuously receives signals of the temperature sensor and the pressure sensors. The temperature sensor is arranged on the upper surface of the cushion 4, one part of the pressure sensors are arranged on the lower surface of the cushion 4, and the other part of the pressure sensors are densely distributed on the front surface of the first backrest 1 in a matrix manner. When passengers sit on the seat, the pressure sensors densely distributed in the matrix are not stressed, and are stressed slightly.
The application improves the internal program of the vehicle-mounted ECU, so that the vehicle-mounted ECU has new functions. The vehicle-mounted ECU is used for judging whether a passenger is on the seat or not according to the temperature sensor and the pressure sensor on the lower surface of the seat cushion 4; when the occupant sits on the seat, the temperature of the temperature sensor rises significantly, and the pressure of the pressure sensor on the lower surface of the seat cushion 4 increases significantly. The vehicle-mounted ECU is used for obtaining the weight of the passenger according to the signals fed back by the pressure sensors on the lower surface of the seat cushion 4, and specifically, the weight of the passenger is calculated according to the average value of the pressure sensors on the lower surface of the seat cushion 4. The vehicle-mounted ECU is also used for obtaining the height and the chest circumference of the passenger according to the pressure sensor positioned on the first backrest 1. Specifically, when the passenger sits on the seat, the pressure sensors densely distributed in the matrix are not stressed, but are stressed greatly and slightly, and the pressure distribution is directly related to the height and the chest circumference.
The chair also comprises a second backrest 2, and the second backrest 2 is arranged close to the rear surface of the first backrest 1; the second backrest 1 is provided with two arm bodies 3 which can slide up and down and extend outwards, and when the two arm bodies 3 extend out, the two arm bodies are in an encircling state. When the vehicle-mounted ECU judges that a passenger is on the seat, the vehicle-mounted ECU controls the arm body 3 to embrace with proper height and opening degree extension according to the calculated weight, height and chest circumference. The second backrest 2 is a new backrest added in the application, and the backrest assembly with the new second backrest 2 still meets all safety regulation requirements and comfort requirements of the seat.
In one embodiment, a trained neural network model is arranged in the vehicle-mounted ECU, and the neural network model performs training of a large number of passengers sitting on the seat, so that the correlation between the pressure sensors on the lower surface of the cushion 4 and the weight of the passengers is obtained, and the correlation between the pressure sensors on the first backrest 1 and distributed densely in a matrix and the correlation between the height and the chest circumference are obtained. The pressure sensors are densely distributed in a matrix on the first backrest 1, and after a driver or a passenger sits on the seat, some pressure sensors have pressure, some pressure sensors have high pressure, and some pressure sensors have low pressure. When people with different heights and chest circumferences sit on the seat, the position of the center of gravity of the upper half body is different (related to the height), and the pressure of the center of gravity of the upper half body is different (related to the chest circumference). Specifically, the chest circumference refers to the circumference of the nipple a certain distance down, for example, the circumference of the nipple 10cm down, which is the most suitable position for holding tightly. In the training process, the weight is divided into 0.5kg, the height is divided into 1cm, the chest circumference is divided into 1cm, training examples are reduced, and passengers with all the heights, the weights and the chest circumferences are included. After the height, the weight and the chest circumference are obtained, the arm body 3 can give the optimal embracing height and the optimal embracing opening according to the height, the weight and the chest circumference. In the working process of the active restraint system, the neural network model outputs a height signal and an opening degree signal of the arm body 3 to the vehicle-mounted ECU according to input pressure signals fed back by the pressure sensors on the lower surface of the cushion 4 and pressure signals of the pressure sensors densely distributed in the first backrest 1 in a matrix mode, the vehicle-mounted ECU controls the arm body 3 to carry out enclasping restraint by matching the optimal enclasping height and the optimal enclasping opening degree of the driver or the passenger, ergonomics is met, and the human comfort degree is improved while the active restraint is carried out.
Preferably, the training rules of the neural network model in the vehicle-mounted ECU of the present application are trained based on a standard sitting posture (the back of the driver or the passenger is close to the front surface of the first backrest).
The active restraint system comprises a temperature sensor and a plurality of pressure sensors; the temperature sensor is arranged on the upper surface of the seat cushion 4, one part of the pressure sensor is arranged on the lower surface of the seat cushion 4, and the other part of the pressure sensor is arranged on the front surface of the first backrest 1. The vehicle-mounted ECU judges whether a passenger is on the seat or not according to signals of a temperature sensor and a surface pressure sensor positioned on the lower surface of the seat cushion 4; the vehicle-mounted ECU obtains the weight of the passenger according to the signal of the surface pressure sensor positioned on the lower surface of the seat cushion 4; the vehicle-mounted ECU obtains the height and the chest circumference of the passenger according to the signal of the front surface pressure sensor positioned on the first backrest 1; and according to weight, height and chest girth information, the control armful arm body 3 slides to suitable position from top to bottom to open and encircle suitable aperture. Compared with the existing safety belt, the active restraint system is more active and positive, after a driver or a passenger takes the safety belt, the active restraint system actively carries out personalized tightening according to the height, the weight and the chest circumference of the driver or the passenger, the safety performance of a vehicle is improved, and the technological sense is improved; the original safety belt is replaced by the arm body, and the technical problem that the safety belt is easy to forget in the prior art is solved.
In one embodiment, the two arm bodies 3 are arranged in a left-right mirror symmetry manner, and each arm body is arc-shaped after extending out. The arm body is a multi-section hollow circular tube, and two adjacent hollow circular tubes are clamped and fixed through a movable circular buckle. Namely, the top end of the next hollow round tube is provided with two small round holes, the bottom end of the previous hollow round tube is provided with two movable round buckles, and when the next hollow round tube is stretched out, the two movable round buckles of the previous hollow round tube are just matched with the two small round holes of the next hollow round tube. When retracting, the upper hollow round pipe is retracted by external force to overcome the restraining force of the movable round buckle. The active restraint system further comprises an air compressor, the air compressor is connected with the vehicle-mounted ECU, and the air compressor is connected to the inner portions of the rear ends of the two arm-embracing bodies through pipelines. When the air compressor conveys high-pressure gas to the inner part of the rear end of the arm body, the arm body is pushed to extend and unfold in a section. The two arm bodies extend to form an approximately closed arc to alternately embrace the driver or the passenger to restrain the driver or the passenger on the seat.
Specifically, when the vehicle-mounted ECU determines that a passenger is on the seat, the vehicle-mounted ECU controls the air compressor to be started, high-pressure air is conveyed into the arm body, and the arm body extends and expands. The utility model provides an embrace arm body is the hollow pipe form of multisection, and the collocation air compressor machine extends the expansion, and design benefit extends control for mechanical structure, has reduced part quantity greatly, has reduced the quality of part, and the mode of the pneumatic extension of high pressure, has shortened the time of extension, has improved the efficiency of holding the restraint tightly.
In one embodiment, the active restraint system further comprises an unlocking switch and a winch connected with the vehicle-mounted ECU, and the winch is connected to the inner wall of the hollow pipe at the foremost end of the arm-embracing body through a steel wire rope. Specifically, the steel wire rope is positioned in the hollow pipe of the arm body. When the unlocking switch is pressed, the vehicle-mounted ECU receives an unlocking instruction, the vehicle-mounted ECU controls the winch to start, and the winch controls the arm-holding body to retract through the steel wire rope. According to the active restraint system, the air compressor is matched with the winch, high-pressure pneumatic stretching is carried out by the air compressor, the winch and the steel wire rope are pulled back through the steel wire, matching is reasonable and ingenious, the number of parts of a traditional telescopic structure is greatly reduced, and cost is reduced; and the initiative restraint system hoist engine and the air compressor machine of this application all can set up in the seat below, are connected to the inner structure of second back 2 through trachea and wire rope, do not occupy 2 inner spaces of second back, and spatial arrangement is loose, and high-efficient rational utilization has effectual space.
In one embodiment, the active restraint system further comprises an ignition device, a reactor and a collision sensor, wherein the collision sensor is arranged at the head, the tail and/or the side surface of the vehicle body of the vehicle. The collision sensor can be one, and if the collision sensor is one, the collision sensor is arranged on the vehicle head. The number of the collision sensors can be four, and the four collision sensors are respectively arranged on the two side faces of the vehicle head, the vehicle tail and the vehicle body. All collision sensors are connected to the vehicle ECU. Ignition and reactor all are located the rear end of embracing the arm body inside, and ignition is used for detonating the reactor. The collision sensor is connected to the ignition device. When a vehicle collides and the two arm-embracing bodies 3 are in a retraction state, any one collision sensor is triggered, a collision signal is transmitted to the ignition device, and the ignition device is started and ignites a reactor; a large amount of gas is instantaneously generated by the reactor to push the two arm-holding bodies to pop out instantaneously; the passenger is firmly fixed on the seat, and the body is prevented from being out of control and being collided in the vehicle or thrown out of the vehicle. It is worth noting that the embracing opening degree of the collision pop-up is larger than the embracing opening degree after daily sitting, a certain margin space is left, and the driver or passengers are prevented from being accidentally injured.
The application discloses initiative restraint system, driver or passenger do not embrace arm body 3 when retraining emergence accident, collision sensor sends signal to ignition, thereby the power reactor, the reactor produces a large amount of gases in the twinkling of an eye, promote two armful arm bodies and pop out in the twinkling of an eye (this moment, wire rope lax state), personal safety when having strengthened driver and passenger and having taken place the accident, be equivalent to air bag's effect, can not set up air bag, initiative restraint system has replaced traditional vehicle's air bag and safety belt in other words, greatly reduced the part quantity, design development cost has been reduced.
Preferably, the reactor comprises sodium azide and potassium nitrate.
In one embodiment, the second backrest 2 has a metal rectangular frame and two vertical pivot rails 6 inside, and the rectangular frame and the two vertical pivot rails 6 are located on the same plane. The rectangular frame and the two vertical pivot rails 6 are slightly inclined. The two vertical rotating shaft sliding rails 6 are arranged in bilateral symmetry. Two ends of each vertical rotating shaft slide rail 6 are rotatably and vertically connected with the upper frame and the lower frame of the rectangular frame. Two vertical rotating shaft sliding rails 6 are installed at the rear ends of the two arm holding bodies one by one, and the plane where the two arm holding bodies are located is perpendicular to the vertical rotating shaft sliding rails 6. The vertical rotating shaft slide rail 6 is provided with a slide groove, and the rear end of the arm-holding body can slide along the slide groove.
Specifically, the active restraint system further comprises a plurality of motors connected with the vehicle-mounted ECU, and the rotation of the vertical rotating shaft slide rail 6 relative to the rectangular frame and the sliding of the arm embracing body relative to the vertical rotating shaft slide rail 6 are controlled by the motors. The vehicle-mounted ECU controls the rotation angle of the vertical rotating shaft slide rail 6, namely the encircling opening of the arm body, by controlling a corresponding motor; still control and embrace the arm body and erect the sliding height of pivot slide rail 6 relatively, embrace the height of arm body promptly, realized embracing arm body 3's intelligent control, accord with human engineering.
Simultaneously, the on-vehicle ECU of this application still has the memory function, normally sits driver and normally sits passenger's weight, height and chest girth information and keep to the memory storehouse, when using, but direct call simplifies the calculated amount.
The application also discloses an active restraint method based on the seat active restraint system, which comprises the following steps:
the vehicle-mounted ECU judges whether a passenger sits on the seat according to the temperature sensor and the pressure sensor on the lower surface of the seat cushion 4; if not, ending; if so, the vehicle-mounted ECU obtains the weight of the passenger according to a signal fed back by the pressure sensor on the lower surface of the seat cushion 4, and obtains the height and the chest circumference of the passenger according to the pressure sensor of the first backrest 1;
the vehicle-mounted ECU controls the two arm bodies 3 to slide up and down to a proper height according to height, weight and chest circumference information, and the arms are extended to embrace according to a proper opening degree.
In one embodiment, a trained neural network model is arranged in the vehicle-mounted ECU, and the neural network model performs training of a large number of passengers sitting on the seat, so that the correlation between the pressure sensors on the lower surface of the cushion 4 and the weight of the passengers is obtained, and the correlation between the pressure sensors on the first backrest 1 and distributed densely in a matrix and the correlation between the height and the chest circumference are obtained. In the training process, the weight is divided into 0.5kg, the height is divided into 1cm, the chest circumference is divided into 1cm, training examples are reduced, and passengers with all the heights, the weights and the chest circumferences are included. After the height, the weight and the chest circumference are obtained, the arm body 3 can give the optimal embracing height and the optimal embracing opening according to the height, the weight and the chest circumference. The optimal embracing height is the above proper height, and the height is a certain distance below the chest of the current driver or passenger. The optimal embracing opening is that a certain gap is reserved between the foremost end of the embracing arm body and the chest of a driver or a passenger.
In the working process of the active restraint system, the neural network model outputs a height signal and an opening degree signal of the arm body 3 to the vehicle-mounted ECU according to input pressure signals fed back by the pressure sensors on the lower surface of the cushion 4 and pressure signals of the pressure sensors densely distributed in the first backrest 1 in a matrix mode, the vehicle-mounted ECU controls the arm body 3 to carry out enclasping restraint by matching the optimal enclasping height and the optimal enclasping opening degree of the driver or the passenger, ergonomics is met, and the human comfort degree is improved while the active restraint is carried out.
Further, two embrace arm body 3 left and right sides mirror symmetry and set up, embrace the arm body and be multisection hollow pipe form, two adjacent hollow pipe are detained the joint through the activity circle and are fixed. The active restraint system further comprises an air compressor, the air compressor is connected with the vehicle-mounted ECU, and the air compressor is connected to the inner portions of the rear ends of the two arm-embracing bodies through pipelines. When the air compressor conveys high-pressure gas to the inner part of the rear end of the arm body, the arm body is pushed to extend and unfold in a section. The two arm bodies extend to form an approximately closed arc to alternately embrace the driver or the passenger to restrain the driver or the passenger on the seat.
Specifically, when the vehicle-mounted ECU determines that a passenger is on the seat, the vehicle-mounted ECU controls the air compressor to be started, high-pressure air is conveyed into the arm body, and the arm body extends and expands. The utility model provides an embrace arm body is the hollow pipe form of multisection, and the collocation air compressor machine extends the expansion, and design benefit extends control for mechanical structure, has reduced part quantity greatly, has reduced the quality of part, and the mode of the pneumatic extension of high pressure, has shortened the time of extension, has improved the efficiency of holding the restraint tightly.
Furthermore, the active restraint system also comprises an unlocking switch and a winch connected with the vehicle-mounted ECU, and the winch is connected to the inner wall of the hollow pipe at the foremost end of the arm body through a steel wire rope. Specifically, the steel wire rope is positioned in the hollow pipe of the arm body. When the unlocking switch is pressed, the vehicle-mounted ECU receives an unlocking instruction, the vehicle-mounted ECU controls the winch to start, and the winch controls the arm-holding body to retract through the steel wire rope. According to the active restraint system, the air compressor is matched with the winch, high-pressure pneumatic stretching is carried out by the air compressor, the winch and the steel wire rope are pulled back through the steel wire, matching is reasonable and ingenious, the number of parts of a traditional telescopic structure is greatly reduced, and cost is reduced; and the initiative restraint system hoist engine and the air compressor machine of this application all can set up in the seat below, and 2 inner spaces of back are not taken up to hoist engine and air compressor machine, are connected to 2 insides of back through trachea and wire rope, and spatial arrangement is loose, and high-efficient rational utilization has effectual space.
The active restraint system also comprises an ignition device, a reactor and at least one collision sensor, wherein the collision sensors are arranged on the head, the tail and/or the side surface of the vehicle body of the vehicle, and all the collision sensors are connected with the vehicle-mounted ECU. Ignition and reactor all are located the rear end of embracing the arm body inside, and ignition is used for detonating the reactor. The collision sensor is connected to the ignition device. When a vehicle collides and the two arm-embracing bodies 3 are in a retraction state, any one collision sensor is triggered, the collision sensor transmits a collision signal to the ignition device, and the ignition device starts and ignites a reactor; the reactor instantly generates a large amount of gas to push the two arm bodies to pop up instantly.
The application discloses initiative restraint system, driver or passenger do not embrace arm body 3 when retraining emergence accident, collision sensor sends signal to ignition, thereby the power reactor, the reactor produces a large amount of gases in the twinkling of an eye, promote two armful arm bodies and pop out in the twinkling of an eye (this moment, wire rope lax state), personal safety when having strengthened driver and passenger and having taken place the accident, be equivalent to air bag's effect, can not set up air bag, initiative restraint system has replaced traditional vehicle's air bag and safety belt in other words, greatly reduced the part quantity, design development cost has been reduced.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An active restraint system for a seat comprising an on-board ECU, the seat comprising a first backrest (1) and a seat cushion (4), characterized in that:
the active restraint system also comprises a temperature sensor and a plurality of pressure sensors which are connected with the vehicle-mounted ECU; the temperature sensors are arranged on the upper surface of the seat cushion (4), one part of the pressure sensors are arranged on the lower surface of the seat cushion (4), and the other part of the pressure sensors are densely distributed on the front surface of the first backrest (1) in a matrix manner;
the vehicle-mounted ECU is used for judging whether a passenger is on the seat according to the temperature sensor and the pressure sensor positioned on the lower surface of the seat cushion (4), obtaining the weight of the passenger according to a signal fed back by the pressure sensor positioned on the lower surface of the seat cushion (4), and obtaining the height and the chest circumference of the passenger according to the pressure sensor positioned on the first backrest (1);
the seat also comprises a second backrest (2), and the second backrest (2) is tightly attached to the rear surface of the first backrest (1); the second backrest (2) is internally provided with two arm bodies (3) which can slide up and down and extend outwards, and when the two arm bodies (3) extend out, the two arm bodies are in an encircling state; when the vehicle-mounted ECU judges that a passenger is on the seat, the vehicle-mounted ECU is used for controlling the two arm-embracing bodies (3) to extend out at proper height and opening degree according to the calculated weight, height and chest circumference.
2. The active seat restraint system of claim 1, wherein: the vehicle-mounted ECU is internally provided with a trained neural network model, and the neural network model is used for outputting height signals and opening signals of the two arm-embracing bodies (3) according to input pressure signals fed back by the surface pressure sensor on the lower surface of the cushion (4) and pressure signals of the pressure sensors densely distributed in the first backrest (1) in a matrix manner.
3. The active seat restraint system of claim 1, wherein: the two arm-holding bodies (3) are arranged in a mirror symmetry manner; each arm body (3) comprises a plurality of sections of hollow circular tubes, and two adjacent hollow circular tubes are clamped and fixed through movable circular buckles; the active restraint system also comprises an air compressor connected with the vehicle-mounted ECU, and the air compressor is connected to the insides of the rear ends of the two arm-holding bodies (3) through pipelines;
when the vehicle-mounted ECU judges that a passenger is in the seat, the vehicle-mounted ECU controls the arm body (3) to extend outwards through the air compressor.
4. The active seat restraint system of claim 3, wherein: the active restraint system also comprises an unlocking switch and a winch connected with the vehicle-mounted ECU, and the winch is connected to the inner wall of the hollow pipe at the foremost end of the arm-embracing body (3) through a steel wire rope; when the unlocking switch is pressed, the vehicle-mounted ECU is used for controlling the arm-embracing body (3) to retract through the winch and the steel wire rope.
5. The active seat restraint system of claim 1, wherein: the active restraint system also comprises an ignition device, a reactor and at least one collision sensor, wherein the collision sensors are arranged on the head, the tail and/or the side surface of the vehicle body of the vehicle, and all the collision sensors are connected with the vehicle-mounted ECU; the ignition device and the reactor are both positioned in the rear end of the arm body (3); the collision sensor is connected with the ignition device;
when the vehicle collides and the arm bodies (3) are in a retraction state, the collision sensor is used for transmitting signals to the ignition device, the ignition device ignites the reactor, the reactor generates a large amount of gas, and the two arm bodies (3) are pushed to pop up.
6. The active seat restraint system of claim 3, wherein:
a rectangular frame and two vertical rotating shaft sliding rails (6) are arranged in the second backrest (2), and two ends of each vertical rotating shaft sliding rail (6) can rotate to be perpendicular to the upper frame and the lower frame of the rectangular frame; the vertical rotating shaft sliding rail (6) is provided with a sliding groove, and the rear end of each arm body can be slidably installed in the sliding groove of one vertical rotating shaft sliding rail (6).
7. An active restraint method based on the active seat restraint system of claim 1, comprising the steps of:
the vehicle-mounted ECU judges whether a passenger sits on the seat according to the temperature sensor and the pressure sensor on the lower surface of the seat cushion (4); if not, ending; if so, the vehicle-mounted ECU obtains the weight of the passenger according to a signal fed back by a pressure sensor on the lower surface of the seat cushion (4), and obtains the height and the chest circumference of the passenger according to a pressure sensor of the first backrest (1);
the vehicle-mounted ECU controls the two arm-embracing bodies (3) to slide up and down to a proper height according to the height, the weight and the chest circumference information, and extends out according to a proper opening degree.
8. The active restraint method of claim 7, wherein: the vehicle-mounted ECU is internally provided with a trained neural network model, the neural network model is used for outputting height signals and opening signals according to pressure signals fed back by the surface pressure sensors on the lower surface of the input cushion (4) and pressure signals of the pressure sensors densely distributed in the first backrest (1) in a matrix mode, and the vehicle-mounted ECU controls the arm-holding body (3) to slide up and down and stretch out according to the height signals and the opening signals.
9. The active restraint method of claim 7, wherein: the two arm-holding bodies (3) are arranged in a mirror symmetry manner; each arm body (3) comprises a plurality of sections of hollow circular tubes, and two adjacent hollow circular tubes are clamped and fixed through movable circular buckles; the active restraint system also comprises an air compressor connected with the vehicle-mounted ECU, and the air compressor is connected to the insides of the rear ends of the two arm-holding bodies (3) through pipelines;
when the vehicle-mounted ECU determines that a passenger is on the seat, the vehicle-mounted ECU controls the arm body (3) to extend outwards through the air compressor;
the active restraint system also comprises an unlocking switch and a winch connected with the vehicle-mounted ECU, and the winch is connected to the inner wall of the hollow pipe at the foremost end of the arm-embracing body (3) through a steel wire rope; when the unlocking switch is pressed, the vehicle-mounted ECU controls the arm-embracing body (3) to retract through the winch and the steel wire rope.
10. The active restraint method of claim 7, wherein: the active restraint system also comprises an ignition device, a reactor and at least one collision sensor connected with the vehicle-mounted ECU, wherein the collision sensor is arranged on the head, the tail and/or the side surface of the vehicle body of the vehicle; the ignition device and the reactor are both positioned in the rear end of the arm body (3); the collision sensor is connected with the ignition device;
when the vehicle collides and the arm bodies (3) are in a retraction state, any collision sensor transmits a signal to the ignition device, the ignition device ignites the reactor, the reactor generates a large amount of gas, and the two arm bodies (3) are pushed to pop up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111539998.9A CN114312497A (en) | 2021-12-15 | 2021-12-15 | Active restraint system and active restraint method for seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111539998.9A CN114312497A (en) | 2021-12-15 | 2021-12-15 | Active restraint system and active restraint method for seat |
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| Publication Number | Publication Date |
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| CN114312497A true CN114312497A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111539998.9A Pending CN114312497A (en) | 2021-12-15 | 2021-12-15 | Active restraint system and active restraint method for seat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116176376A (en) * | 2023-03-17 | 2023-05-30 | 扬州市高升机械有限公司 | Engineering vehicle seat |
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2021
- 2021-12-15 CN CN202111539998.9A patent/CN114312497A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116176376A (en) * | 2023-03-17 | 2023-05-30 | 扬州市高升机械有限公司 | Engineering vehicle seat |
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