CN110787366A - Collision protection system and method and vehicle - Google Patents
Collision protection system and method and vehicle Download PDFInfo
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- CN110787366A CN110787366A CN201810866041.7A CN201810866041A CN110787366A CN 110787366 A CN110787366 A CN 110787366A CN 201810866041 A CN201810866041 A CN 201810866041A CN 110787366 A CN110787366 A CN 110787366A
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- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36003—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of motor muscles, e.g. for walking assistance
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- A—HUMAN NECESSITIES
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Abstract
The invention discloses a collision protection system, a method and a vehicle, wherein the collision protection system is applied to the vehicle; the method comprises the following steps: the device comprises an impact sensing component, a driving component and an electric early warning component; the electric early warning component is arranged below the vehicle seat and comprises an electrode; the collision sensing component is used for sending a collision signal to the driving component when sensing that the vehicle collides with a front object; the driving component is used for providing driving voltage for the electric early warning component; and the electric early warning component is used for controlling the electrode to discharge under the action of the driving voltage and stimulating the leg muscles of the personnel on the vehicle. Therefore, according to the embodiment of the invention, when a vehicle collides, the leg muscles of the vehicle personnel are stimulated through the electrode discharge, so that the body muscles of the vehicle personnel are in a tight state during collision, the damage in collision is reduced, and the driving safety is improved.
Description
Technical Field
The invention relates to the technical field of driving safety, in particular to a collision protection system, a collision protection method and a vehicle.
Background
With the rapid development of the automobile industry, automobiles also become vehicles of every family generally, and people pay more and more attention to the safe driving performance of the vehicles.
The existing vehicle is in the field of anti-collision, and mainly tests the distance between the current vehicle and a front object, when the tested distance is smaller than the set safe distance, the vehicle sends an early warning signal to a driver, and the driver takes emergency braking measures to prevent vehicle collision.
On one hand, however, a long human body reaction time exists between the time when the driver receives the early warning signal and the time when the driver takes the braking measure, and the effective early warning effect cannot be achieved, so that collision is caused; on the other hand, when the collision happens, the existing early warning technology cannot protect the personnel on the vehicle, and serious injury is caused.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a collision protection system, a method and a vehicle, which can stimulate leg muscles of people on the vehicle through electrode discharge when the vehicle collides, so that the body muscles of the people on the vehicle are in a tight state when the vehicle collides, the damage in the collision is reduced, and the driving safety is improved.
Therefore, the embodiment of the invention provides the following technical scheme:
in a first aspect, embodiments of the present invention provide a collision protection system, which is applied to a vehicle; the method comprises the following steps: the device comprises an impact sensing component, a driving component and an electric early warning component;
the electric early warning component is arranged below the vehicle seat and comprises an electrode;
the collision sensing component is used for sending a collision signal to the driving component when sensing that the vehicle collides with a front object;
the driving component is used for providing driving voltage for the electric early warning component;
and the electric early warning component is used for controlling the electrode to discharge under the action of the driving voltage and stimulating the leg muscles of the personnel on the vehicle.
Optionally, the impact sensing part includes: a pressure sensitive resistor and a protective resistor;
the pressure sensitive resistor is arranged at the front end of the energy absorption box; the energy absorption box is arranged at the front end of the vehicle; the pressure sensitive resistor and the protection resistor are connected in series;
the driving part includes: a high voltage generator; the high-voltage generator is connected with the protection resistor in parallel;
the electric early warning part further includes: a metal wire; the metal wire is connected with the electrode;
the pressure sensitive resistor is used for reducing the resistance of the pressure sensitive resistor and increasing the voltage between two ends of the protection resistor when a vehicle collides with a front object;
and the high voltage generator is used for giving discharge to the electrodes when the voltage at the two ends reaches the trigger voltage, and the metal wires connected with the electrodes stimulate the leg muscles of the person on the vehicle.
Optionally, the impact sensing part includes: the pressure-sensitive resistor, the resistance detector and the controller;
the resistance detector is used for detecting the resistance value of the pressure sensitive resistor;
and the controller is used for controlling the driving component to provide driving voltage for the electric early warning component when the resistance value detected by the resistance detector is smaller than a preset resistance threshold value, so that the electric early warning component controls the electrodes to discharge and stimulate leg muscles of people on the vehicle.
Optionally, the electric early warning component at least includes: a first electrode, a second electrode;
the first electrode corresponds to the first metal wire; the second electrode corresponds to the second metal wire;
the first end of the first electrode is connected with the first output end of the high-voltage generator; the second end of the first electrode is connected with the first metal wire;
the first end of the second electrode is connected with the second output end of the high-voltage generator; a second end of the second electrode is connected to the second wire.
Optionally, the system further includes: radar, controller and alarm components;
the radar is used for monitoring the distance between the vehicle and a front object;
the controller is used for controlling the warning component to give an alarm when the distance between the vehicle monitored by the radar and the front object is smaller than a first preset threshold value.
Optionally, the warning component is a light emitting diode and/or a buzzer.
Optionally, the system further includes: a switch;
the switch is connected between the vehicle-mounted power supply and the alarm component;
the switch is used for controlling the switch to be closed by the controller when the distance between the vehicle monitored by the radar and the front object is smaller than a first preset threshold value, so that the vehicle-mounted power supply supplies power to the warning component.
Optionally, the first preset threshold is related to a road highest speed limit standard and a response time t of the switch.
In a second aspect, an embodiment of the present invention provides a collision protection method, applied to a vehicle, including: the device comprises an impact sensing component, a driving component and an electric early warning component;
the electric early warning component is arranged below the vehicle seat and comprises an electrode;
the collision sensing component gives a collision signal to the driving component when the vehicle collides with a front object;
the driving part provides driving voltage for the electric early warning part according to the received collision signal;
and the electric early warning component controls the electrodes to discharge under the action of the driving voltage, so that leg muscles of people on the vehicle are stimulated.
In a third aspect, an embodiment of the present invention provides a vehicle, including the collision protection system of the first aspect and a vehicle-mounted power supply; and the vehicle-mounted power supply is used for providing power for the collision protection system.
Compared with the prior art, the invention has at least the following advantages:
the collision protection system comprises a collision induction component, a driving component and an electric early warning component, wherein the electric early warning component is arranged below a vehicle seat, when a vehicle collides with an object in front, the collision induction component gives a collision signal to the driving component, the driving component provides driving voltage for the electric early warning component, and the electric early warning component controls electrodes to discharge under the action of the driving voltage.
Therefore, when a vehicle collides, the electric early warning component positioned below the vehicle seat controls the discharge of the electrodes to stimulate leg muscles of people on the vehicle under the action of the driving voltage, so that the body muscles of the people on the vehicle are in a tightened state in the collision and airbag explosion processes, and the injury of the people on the vehicle in the collision is reduced. Moreover, leg muscles of the vehicle personnel are directly stimulated through electric shock, the subjective reflecting time of the vehicle personnel is shortened, the human body response time is shortened, and the injury suffered by the vehicle personnel in the vehicle collision process is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a block diagram of a collision protection system according to an embodiment of the present invention;
FIG. 2A is a block diagram of another impact protection system provided in accordance with an embodiment of the present invention;
FIG. 2B is a block diagram of another crash protection system provided in accordance with an embodiment of the present invention;
FIG. 3 is a block diagram of yet another collision protection system according to an embodiment of the present invention;
FIG. 4 is a flow chart of a collision protection method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to facilitate understanding of the technical solutions provided by the present invention, the following briefly describes the background art of the technical solutions of the present invention.
The inventor researches and discovers that the anti-collision system of the existing vehicle only sends an early warning signal to a driver when the distance from a test vehicle to a front vehicle is less than a preset safety distance, and prompts the driver to take a braking measure, so that the probability of vehicle collision is reduced, and a protective measure is not provided for reducing the harm of the collision to personnel on the vehicle when the vehicle collides.
Based on the above, the embodiment of the invention provides a collision protection system, which comprises a collision sensing component, a driving component and an electric early warning component, wherein the electric early warning component is arranged below a vehicle seat, when a vehicle collides with a front object, the collision sensing component gives a collision signal to the driving component, so that the driving component provides driving voltage for the electric early warning component, and under the action of the driving voltage, the electric early warning component controls electrode discharge to stimulate leg muscles of people on the vehicle, so that the body muscles of the people on the vehicle are in a tight state in the collision process, further the injury of the people on the vehicle in the collision is reduced, and the driving safety is improved.
In order to facilitate understanding of the present invention by those skilled in the art, a collision protection system according to the present invention will be explained with reference to the accompanying drawings.
Example one
Referring to fig. 1, a diagram of a crash protection system in accordance with the present invention is shown.
The collision protection system of this embodiment is applied to the vehicle, includes: the system comprises an impact sensing part 101, a driving part 102 and a movie early warning part 103;
the electric early warning part 103 is arranged below the vehicle seat and comprises an electrode 104.
The collision sensing part 101 is configured to send a collision signal to the driving part 102 when sensing that the vehicle collides with a front object.
The driving component 102 is configured to provide a driving voltage for the electric early warning component 103.
And the electric early warning component 103 is used for controlling the electrode 1031 to discharge under the action of the driving voltage to stimulate leg muscles of people on the vehicle.
It should be noted that, in this embodiment, the voltage of the electric early warning component 103 controlling the electrode 104 to discharge is a safe voltage, which is smaller than the safe voltage that a human body can bear. The on-board personnel may include, among other things, a driver and passengers.
In this embodiment, the electric early warning unit 103 is generally installed below the vehicle seat, so that when the vehicle collides with a front object, the electric early warning unit 103 controls the electrodes 1031 to discharge electricity to stimulate the muscles of the legs of the vehicle occupant, so that the muscles are in a tight state during the collision of the vehicle occupant, thereby reducing the injury during the collision. In practical application, different numbers of electric early warning components can be installed according to the deployment condition of the vehicle seat. For example, if the vehicle has 5 seats, an electric early warning component is correspondingly installed below each seat, so that when the vehicle collides, the leg muscles of the vehicle occupant on each seat can be stimulated by the electric early warning component.
Wherein, the collision sensing part 101 is used for sensing whether the vehicle collides with the front object, therefore, the collision sensing part 101 can be installed at the front end of the vehicle, when the vehicle collides with the front object, the collision event can be sensed in time, and the collision signal is sent to the driving part 102.
Of course, the collision sensing part 101 may be installed at the rear of the vehicle, and when the vehicle is rear-end-collided, a collision event may be sensed in time and a collision signal may be transmitted to the driving part 102.
The impact sensing part 101 may be a pressure sensor installed at the front end of the vehicle, and when the vehicle collides with a front object, the pressure applied to the pressure sensor increases sharply to send a collision signal to the driving part 102, and when the driving part 102 receives the collision signal, the driving part provides a driving voltage to the electric early warning part 103, and controls the electrodes to discharge electricity under the action of the driving voltage, so as to stimulate leg muscles of people on the vehicle.
Of course, the impact sensing component 101 may also be other devices capable of sensing a vehicle collision, such as a pressure sensitive resistor, and the embodiment is not limited herein.
The driving part 102 may be a vehicle-mounted power supply, and when receiving the collision signal transmitted by the collision sensing part 101, the vehicle-mounted power supply is used to provide a driving voltage for the electric early warning part 103.
It can be understood that when the vehicle does not collide, the on-vehicle power supply and the electric warning component 103 may be in a disconnected state, and the electric warning component 103 cannot control the electrode 1031 to discharge; when the vehicle collides, the vehicle-mounted power supply and the electric early warning component form a closed loop, the vehicle-mounted power supply provides driving voltage for the electric early warning component 103, and the early warning component 103 controls the electrode 1031 to discharge electricity under the action of the driving voltage to stimulate leg muscles of people on the vehicle.
In some embodiments, an electrical early warning component is disposed below the driver's seat to stimulate the driver's leg muscles.
When the vehicle seat is used specifically, the two electrodes can be arranged below the vehicle seat and are respectively arranged at the positions of two legs of a person on the vehicle, so that when the vehicle collides, the two legs of the person on the vehicle can be stimulated through the two electrodes.
The collision protection system comprises a collision induction component, a driving component and an electric early warning component, wherein the electric early warning component is arranged below a vehicle seat, when a vehicle collides with an object in front, the collision induction component gives a collision signal to the driving component, the driving component provides driving voltage for the electric early warning component, and the electric early warning component controls electrodes to discharge under the action of the driving voltage. Therefore, when a vehicle collides, the electric early warning component positioned below the vehicle seat controls the discharge of the electrodes to stimulate the leg muscles of the vehicle personnel under the action of the driving voltage, so that the body muscles of the vehicle personnel are in a tightened state in the collision and airbag explosion processes, and the injury of the vehicle personnel in the collision is reduced. Moreover, the legs of the vehicle personnel are directly stimulated through electric shock, the subjective reflecting time of the vehicle personnel is reduced, and the human body response time is shortened.
Example two
The above embodiments describe the functional implementation of the collision protection system, and the following detailed description will be made with reference to the specific components of the two pairs of collision protection systems according to the embodiments.
Referring to fig. 2A, a diagram of another crash protection system according to an embodiment of the invention is shown.
In this embodiment, the collision protection system impact sensing component 10 includes a pressure sensitive resistor 101 and a protection resistor 102.
The pressure sensitive resistor 101 is mounted at the front end of an energy absorption box, wherein the energy absorption box is mounted at the front end of a vehicle and is used for absorbing collision energy when the vehicle collides, and the energy absorption box plays a part of buffering role. The pressure sensitive resistor 101 and the protection resistor 102 are connected in series.
The driving part 20 includes: a high voltage generator 201, wherein the high voltage generator 201 is connected in parallel with the protection resistor 102.
The electric early warning part 30 further includes: a wire 302; the wire 302 is connected to the electrode 1031.
The pressure sensitive resistor 101 is used for reducing the resistance of the pressure sensitive resistor 101 and increasing the voltage across the protective resistor 102 when a vehicle collides with a front object.
The pressure sensitive resistor 101 rises with the pressure, the resistance value is rapidly reduced, because the pressure sensitive resistor and the protection resistor are connected in series, when a vehicle collides with a front object, the energy absorption box is extruded to transmit the pressure to the pressure sensitive resistor, the pressure is increased, the resistance value is reduced, and the voltage at two ends of the protection resistor is increased.
The high voltage generator 201 is used for giving a discharge to the electrode 1031 when the voltage at the two ends reaches a trigger voltage, and stimulating leg muscles of a person on the bicycle by the metal wire 302 connected with the electrode 1031.
The working principle of the high-voltage generator is that when the input voltage of the input end of the high-voltage generator reaches the trigger voltage, the output end of the high-voltage generator discharges through the electrode, and it should be noted that the voltage output by the output end of the high-voltage generator is safe voltage which is smaller than the voltage which can be borne by a human body, so that the safety of the human body is ensured.
In the embodiment, when a vehicle collides, the resistance value of the pressure sensitive resistor is reduced, the pressure sensitive resistor is connected with the protection resistor in series, the total resistance value is reduced, the voltage at two ends of the protection resistor is increased, the high-voltage generator is connected with the protection resistor in parallel, the voltage at two ends of the high-voltage generator is also increased, when the trigger voltage is reached, the output end of the high-voltage generator discharges through the electrode, and the leg muscles of the personnel on the vehicle are stimulated through the metal wire sewed on the upper surface of the seat of the personnel on the vehicle, so that the body muscles of the personnel on the vehicle are in a tight state in the collision and airbag explosion processes, and the injury of the personnel on the.
In some embodiments, the impact sensing component 10 includes: a pressure sensitive resistor 101, a resistance detector 103, and a controller 104.
The resistance detector 103 is configured to detect a resistance value of the pressure sensitive resistor 101;
the controller 104 is configured to control the driving component 20 to provide a driving voltage for the electric warning component 30 when the resistance value detected by the resistance detector 103 is smaller than a preset resistance threshold value, so that the electric warning component 30 controls the electrode 1031 to discharge, and leg muscles of a person on the vehicle are stimulated.
The preset resistance threshold is a resistance value, which may be a specific resistance value Rx, and when the resistance detector 103 detects that the resistance value R of the current pressure sensitive resistor is smaller than Rx, which indicates that the pressure applied by the pressure sensitive resistor is large, it is determined that the vehicle collides, and the controller 104 controls the electrode 1031 to discharge.
For easy understanding, refer to fig. 2B, which is a block diagram of another collision protection system according to the present invention, wherein the resistance detector detects a resistance value of the pressure sensitive resistor, and when the detected resistance value is smaller than a preset resistance threshold, the controller controls the high voltage generator to discharge electricity through the electrodes and stimulate leg muscles of a person on the vehicle by the wires.
When specifically using, in order to avoid the electrode to break down, can not in time stimulate car personnel's shank, in order to guarantee car personnel's safety, electric early warning part includes two electrodes at least, can set up two electrodes below every car personnel's the seat.
In some embodiments, the electrical early warning component comprises at least: a first electrode, a second electrode;
the first electrode corresponds to the first metal wire; the second electrode corresponds to the second wire.
The first end of the first electrode is connected with the first output end of the high-voltage generator; the second end of the first electrode is connected to the first wire.
The first end of the second electrode is connected with the second output end of the high-voltage generator; a second end of the second electrode is connected to the second wire.
Through the above description, the collision protection system of the embodiment is used for reducing the injury of the vehicle occupant during the collision when the vehicle is in collision. Of course, the method can also be used for reminding the driver of taking braking measures in time when the distance between the vehicle and the front object is short, so as to avoid the collision between the vehicles.
In some embodiments, the system further comprises: radar, controller and alarm component.
The radar is used for monitoring the distance between the vehicle and a front object; the controller is used for controlling the warning component to give an alarm when the distance between the vehicle monitored by the radar and the front object is smaller than a first preset threshold value.
Wherein, the radar can be ultrasonic radar, installs beside the vehicle place ahead fog lamp, and ultrasonic radar's transmitting direction is vehicle place ahead to the distance of monitoring vehicle and place ahead object.
The controller can be a single chip microcomputer and is integrated on the vehicle-mounted computer, so that when the distance monitored by the radar is smaller than the safe distance, the single chip microcomputer sends an electric signal to control the switch to be closed, and the vehicle-mounted power supply supplies power to the warning component.
The warning element may be a light emitting diode and/or a buzzer, that is, the warning element may be a light emitting diode, or a buzzer, or a light emitting diode and a buzzer. Of course, the warning component may also be other components that can be used to remind the driver of safe driving, and this embodiment is not limited herein.
Wherein the light emitting diodes may be mounted on the dashboard of the vehicle so that the driver may view them in time.
In this embodiment, the first preset threshold is a safe distance between the vehicle and the object in front, and the specific threshold may be set according to the performance of different vehicles, the actual road condition, or an empirical value.
When the radar monitors that the distance between the vehicle and the front object is smaller than a first preset threshold value, the controller controls the light-emitting diode to emit light and/or controls the buzzer to sound, so that the driver is warned that the vehicle is close to the front object, the driver can decelerate or take braking measures, and accidents are avoided.
Considering that the electric capacity of the vehicle-mounted power supply is limited, in order to save electric quantity, a switch can be arranged in the system, when the vehicle is in a safe distance with the object in front, the switch is disconnected, the vehicle-mounted power supply and the warning component are in a disconnected state, when the distance between the vehicle and the object in front is smaller than the safe distance, the controller controls the switch to be closed, the vehicle-mounted power supply and the warning component are in a connected state, the vehicle-mounted power supply provides power for the warning component, and the warning component can timely warn a driver to take measures to avoid collision.
Based on this, in some embodiments, the system further comprises: a switch; the switch is connected between the vehicle-mounted power supply and the warning component and used for controlling the switch to be closed when the distance between the vehicle monitored by the radar and the front object is smaller than a first preset threshold value, so that the vehicle-mounted power supply supplies power to the warning component.
In this embodiment, when the radar monitors that the distance between the vehicle and the object in front is smaller than a first preset threshold value, the controller sends an electric signal to control the switch to be closed, and the vehicle-mounted power supply supplies power to the warning component, so that the warning component works to warn a driver.
In addition, when the system includes a switch, the embodiment also provides a method for defining a first preset threshold, and the first preset threshold is defined according to the response time of the switch and the highest speed limit standard of the road.
In some embodiments, said first preset threshold value is related to the road maximum speed limit criterion Vmax and the response time t of said switch.
For example, the highest speed limit standard Vmax of the domestic road is 120Km/h, namely 3.3 m/s; the switch is selected to electrically trigger the on-off switch, the response time t is generally 0.1, and then the first preset threshold value S ═ Vmax ═ t ═ 3.3m, namely when the radar monitors that the distance between the vehicle and the front object is less than 3.3m, the controller sends a control signal to control the switch to be closed, and under the action of the vehicle-mounted power supply, the warning component warns the driver.
According to the collision protection system provided by the embodiment of the invention, when a vehicle collides, the resistance value of the pressure sensitive resistor is reduced, the pressure sensitive resistor is connected with the protection resistor in series, the total resistance value is reduced, the voltage at two ends of the protection resistor is increased, the high-voltage generator is connected with the protection resistor in parallel, the voltage at two ends of the high-voltage generator is also increased, when the trigger voltage is reached, the output end of the high-voltage generator discharges electricity through the electrode, and the leg muscles of the personnel on the vehicle are stimulated through the metal wire sewed on the upper surface of the seat of the personnel on the vehicle, so that the body muscles of the personnel on the vehicle are in a tight state in the collision and airbag explosion processes, and the injury of the.
In addition, the radar, the controller and the warning component can be installed, when the radar monitors that the distance between the vehicle and the front object is smaller than the safe distance, the controller sends an electric signal to control the warning component to work, and the driver is reminded to reduce the vehicle speed or brake emergently, so that the occurrence of collision is avoided, and safe driving is improved.
EXAMPLE III
In order to facilitate the understanding of the technical solutions provided by the embodiments of the present invention by those skilled in the art, a collision protection system will be generally described below, and the collision protection system may include two parts, where the first part is used to remind a driver in time before a collision; the second part is used for protecting the personnel in the vehicle when the vehicle is in collision so as to reduce the injury in the collision process.
Referring to fig. 3, a diagram of a collision protection system according to another embodiment of the present invention is shown.
In this embodiment, the collision protection system includes: radar 301, controller 302, switch 303, pressure sensitive resistor 304, protection resistor 305, light emitting diode 306, vehicle mounted power supply 307, high voltage generator 308, electrode 1031a, electrode 1031b, wire 302a, wire 302 b.
The radar 301 may be an ultrasonic radar, and is installed in front of the vehicle, and connected to the controller 302 through a wire, and the controller 302 and the switch 303 are connected through a wire.
The switch 303, the pressure sensitive resistor 304, the protection resistor 305, the light emitting diode 306 and the vehicle-mounted power supply 307 are connected in series through conducting wires, and when the switch 303 is closed, a closed loop can be formed. The pressure sensitive resistor 304 can be a pressure sensitive resistor with a resistance value reduced along with the increase of pressure and is arranged at the front end of the energy absorption box at the front end of the vehicle; the light emitting diodes 306 may be mounted above the instrument panel so as to be viewable by the driver.
The input end of the high voltage generator 308 is connected in parallel with the protection resistor 305, the output end is connected with the electrode 1031a and the electrode 1031b respectively, and the electrode 1031a and the electrode 1031b are connected with the metal wire 302a and the metal wire 302b respectively. The wires 302a and 302b are sewn to the surface of the driver's seat in a position where the seat supports the thigh muscles of the driver.
In this embodiment, through installing the distance of detecting vehicle and the place ahead object at the radar 301 in vehicle the place ahead, when radar 301 measures the distance and is less than safe distance, controller 302 signals, and control switch 303 is closed, and emitting diode 306 forms closed loop with vehicle mounted power 307, and emitting diode 306 is luminous, reminds driver safe driving, keeps safe distance with the place ahead object, avoids bumping.
When a vehicle collides with a front object, the crash boxes receive extrusion, and transmit pressure to the pressure sensitive resistor 304, so that the resistance value of the pressure sensitive resistor 304 is reduced, and under the condition that the voltage of the vehicle-mounted power supply 307 is stable, the total resistance value and the resistance value of the pressure sensitive resistor 304 are reduced, so that the divided voltage at the two ends of the protection resistor 305 is increased. Meanwhile, because the high voltage generator 308 is connected in parallel with the protection resistor 305, the voltage at two ends of the high voltage generator 304 is also increased, when the trigger voltage is reached, the output end of the high voltage generator 308 discharges through the electrode 1031a and the electrode 1031b, and stimulates leg muscles of the driver through the metal wire 302a and the metal wire 302b, so that the body muscles of the driver are in a tight state in the processes of collision, airbag explosion and the like, and the injury of the driver in the collision is reduced.
From the above description, the specific operation of the collision protection system provided in the embodiment before and during a vehicle collision can be clearly understood, and the selection of each component in the embodiment will be explained below.
In this embodiment, the safety distance S may be determined as Vmax t according to the maximum speed limit criterion Vmax of the road and the switch response time t, and when the radar monitors that the distance between the vehicle and the front object is less than S, the controller is triggered to control the switch to be closed.
A finite element model of a designed vehicle type is established through a finite element method, and the pressure Fmax generated when the vehicle collides with the rigid wall at the front side with the highest speed limit Vmax is obtained through explicit solution, so that the pressure which can be borne by the vehicle is at least Fmax when the pressure sensitive resistor is selected.
Determining the maximum total resistance value R1 ═ R0+ Rmax ═ U0/I0 of the protection resistor and the pressure sensitive resistor according to the rated current I0 of the light emitting diode; wherein, R0 is the resistance value of the protection resistor, U0 is the vehicle-mounted power voltage value, and Rmax is the resistance value of the pressure sensitive resistor when not under pressure.
Determining the minimum total resistance R2 of the protection resistor and the pressure sensitive resistor as R0+ Rmin as U0/Imax according to the maximum current Imax of the light emitting diode; wherein Rmin is the resistance value of the pressure sensitive resistor when the pressure sensitive resistor is subjected to Fmax pressure.
And determining the voltage amplification factor A of the high-voltage generator to be Up/Ui according to the selected input voltage Ui of the high-voltage generator and the human body bearable safety voltage Up, wherein Ui is the trigger voltage input by the high-voltage generator.
And determining the minimum resistance values of the protective resistor and the pressure sensitive resistor in the collision according to the high voltage generator and the vehicle-mounted power supply voltage. Since the high-voltage generator is connected in parallel with the protection resistor, the trigger voltage of the high-voltage generator is equal to the voltage across the protection resistor, so that Ui is U0 × R0/(R0+ Rmin), and since Ui, U0 and R2 are known, the protection resistor R0 can be determined, and then Rmin and Rmax can be determined.
Through the above description, the selected resistance value of the pressure sensitive resistor is Rmin when the pressure is Fmax, and Rmax when the pressure is 0.
For the sake of understanding, a model will be described as an example, and the rear end collision peak force of the energy absorption box is measured to be 70KN when the finite element model collides with the rigid wall through an explicit mechanical simulation method.
The rated current I0 of the selected light emitting diode is 2mA, the vehicle power supply is 12V, and the maximum total resistance value R1 of the protection resistor and the pressure sensitive resistor is R0+ Rmax is 12000V/2A is 6000 Ω.
The maximum current Imax of the light-emitting diode is 4mA, and the minimum total resistance value R2 of the protective resistor and the pressure sensitive resistor is determined to be R0+ Rmin 12000V/4A 3000 omega.
The input trigger voltage Ui of the high voltage generator is selected to be 3V, the acceptable safe voltage Up according to human body is generally 36V, and the voltage amplification factor a of the high voltage generator is 36/3 to 12.
According to the fact that the input trigger voltage Ui of the high-voltage generator is 3V and the vehicle-mounted power supply voltage U0 is 12V, the minimum value of the protective resistance and the pressure sensitive resistance is determined, and if 3 is 12R 0/3000, R0 is 750 omega, Rmin is 2250 omega, and Rmax is 5250 omega.
Therefore, the resistance value of the pressure sensitive resistor is such that when the pressure Fmax is 70KN, the resistance Rmin is 2250 Ω, and when the pressure is 0, the resistance Rmax is 5250 Ω.
This embodiment has the advantage of early warning and collision in-process protection driver before the collision concurrently, before the collision takes place, warns the driver through emitting diode, and when the collision takes place, through the taut protection driver of amazing muscle, the injury of reduction in the collision. On one hand, the electric shock method is adopted to directly stimulate the legs to enable the muscles of the driver to be tight in the collision process, so that the subjective reaction time of the driver is reduced, and the protection effect on the driver is better; on the other hand, this embodiment just control switch closure when the vehicle is close to the place ahead object and form closed circuit, just produce the electric shock effect when detecting the collision through pressure sensitive resistor, effectively avoid the mistake electric shock to the driver, and energy-saving good, the recycling nature is strong, and the reliability is high.
Example four
Based on the collision protection system provided by the above embodiment, the embodiment also provides a collision protection method, which will be described below with reference to the accompanying drawings.
Referring to fig. 4, it is a flowchart of a collision protection method according to an embodiment of the present invention.
The method of the embodiment is applied to a vehicle and comprises the following steps: the device comprises an impact sensing component, a driving component and an electric early warning component.
Wherein, electric early warning part sets up in vehicle seat below, electric early warning part includes the electrode.
S401: and the collision sensing part gives a collision signal to the driving part when the vehicle collides with the front object.
S402: and the driving part provides driving voltage for the electric early warning part according to the received collision signal.
S403: and the electric early warning component controls the electrodes to discharge under the action of the driving voltage, so that leg muscles of people on the vehicle are stimulated.
It should be noted that the method of the present embodiment may be applied to the collision protection system shown in fig. 1, fig. 2, and fig. 3, and the present embodiment is not described herein again.
According to the method provided by the embodiment of the invention, when the vehicle collides with a front object, the collision sensing component gives a collision signal to the driving component, so that the east component provides driving voltage for the electric early warning component, and under the action of the driving voltage, the electric early warning component controls the electrode to discharge electricity to stimulate leg muscles of people on the vehicle, so that the body muscles of the people on the vehicle are in a tight state during collision, the damage in collision is reduced, and the safety of the people on the vehicle is protected.
EXAMPLE five
Based on the collision protection system and the method provided by the embodiment, the invention further provides a vehicle, which is described in detail below with reference to the accompanying drawings.
Referring to fig. 5, a schematic view of a vehicle structure according to an embodiment of the present invention is shown.
The vehicle provided by the embodiment includes the collision protection system 501 and the vehicle-mounted power supply 502 of the first embodiment, the second embodiment or the third embodiment.
The collision protection system 501 is used for sending a collision signal to the driving part when a vehicle collides with a front object, and the driving part provides driving voltage for the electric early warning part; and the electrodes are controlled to discharge under the action of the driving voltage to stimulate the leg muscles of the people on the vehicle.
And the vehicle-mounted power supply 502 is used for supplying power to the collision system 501.
The vehicle that this embodiment provided can utilize collision protection system to provide the protection for the personnel on the car, and when the vehicle collided with the place ahead object, the electric early warning part that is located vehicle seat below, under drive voltage's effect, control electrode discharges and stimulates personnel's on the car shank muscle for personnel's on the car body muscle is in the state of tightening at collision and gasbag point explosion in-process, reduces the injury of personnel on the car in the collision.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (10)
1. A collision protection system, for use on a vehicle; the method comprises the following steps: the device comprises an impact sensing component, a driving component and an electric early warning component;
the electric early warning component is arranged below the vehicle seat and comprises an electrode;
the collision sensing component is used for sending a collision signal to the driving component when sensing that the vehicle collides with a front object;
the driving component is used for providing driving voltage for the electric early warning component;
and the electric early warning component is used for controlling the electrode to discharge under the action of the driving voltage and stimulating the leg muscles of the personnel on the vehicle.
2. The crash protection system as recited in claim 1, wherein the impact sensing member comprises: a pressure sensitive resistor and a protective resistor;
the pressure sensitive resistor is arranged at the front end of the energy absorption box; the energy absorption box is arranged at the front end of the vehicle; the pressure sensitive resistor and the protection resistor are connected in series;
the driving part includes: a high voltage generator; the high-voltage generator is connected with the protection resistor in parallel;
the electric early warning part further includes: a metal wire; the metal wire is connected with the electrode;
the pressure sensitive resistor is used for reducing the resistance of the pressure sensitive resistor and increasing the voltage between two ends of the protection resistor when a vehicle collides with a front object;
and the high voltage generator is used for giving discharge to the electrodes when the voltage at the two ends reaches the trigger voltage, and the metal wires connected with the electrodes stimulate the leg muscles of the person on the vehicle.
3. The crash protection system as recited in claim 1, wherein the impact sensing member comprises: the pressure-sensitive resistor, the resistance detector and the controller;
the resistance detector is used for detecting the resistance value of the pressure sensitive resistor;
and the controller is used for controlling the driving component to provide driving voltage for the electric early warning component when the resistance value detected by the resistance detector is smaller than a preset resistance threshold value, so that the electric early warning component controls the electrodes to discharge and stimulate leg muscles of people on the vehicle.
4. Collision protection system according to claim 2 or 3, characterized in that the electric pre-warning component comprises at least: a first electrode, a second electrode;
the first electrode corresponds to the first metal wire; the second electrode corresponds to the second metal wire;
the first end of the first electrode is connected with the first output end of the high-voltage generator; the second end of the first electrode is connected with the first metal wire;
the first end of the second electrode is connected with the second output end of the high-voltage generator; a second end of the second electrode is connected to the second wire.
5. The crash protection system as recited in claim 1, further comprising: radar, controller and alarm components;
the radar is used for monitoring the distance between the vehicle and a front object;
the controller is used for controlling the warning component to give an alarm when the distance between the vehicle monitored by the radar and the front object is smaller than a first preset threshold value.
6. The collision protection system according to claim 5, characterized in that the warning element is a light emitting diode and/or a buzzer.
7. The collision protection system according to claim 5 or 6, characterized in that the system further comprises: a switch;
the switch is connected between the vehicle-mounted power supply and the alarm component;
the switch is used for controlling the switch to be closed by the controller when the distance between the vehicle monitored by the radar and the front object is smaller than a first preset threshold value, so that the vehicle-mounted power supply supplies power to the warning component.
8. The collision protection system according to claim 6, characterized in that the first preset threshold value is related to a road maximum speed limit criterion and a response time t of the switch.
9. A collision protection method, applied to a vehicle, comprising: the device comprises an impact sensing component, a driving component and an electric early warning component;
the electric early warning component is arranged below the vehicle seat and comprises an electrode;
the collision sensing component gives a collision signal to the driving component when the vehicle collides with a front object;
the driving part provides driving voltage for the electric early warning part according to the received collision signal;
and the electric early warning component controls the electrodes to discharge under the action of the driving voltage, so that leg muscles of people on the vehicle are stimulated.
10. A vehicle, characterized by comprising: the collision protection system of any one of claims 1 to 8; further comprising: a vehicle-mounted power supply;
and the vehicle-mounted power supply is used for providing power for the collision protection system.
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