CN110787366B - Collision protection system, method and vehicle - Google Patents
Collision protection system, method and vehicle Download PDFInfo
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- CN110787366B CN110787366B CN201810866041.7A CN201810866041A CN110787366B CN 110787366 B CN110787366 B CN 110787366B CN 201810866041 A CN201810866041 A CN 201810866041A CN 110787366 B CN110787366 B CN 110787366B
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- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- 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
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
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Abstract
The application discloses a collision protection system, a method and a vehicle, wherein the collision protection system is applied to the vehicle; comprising the following steps: the impact sensing component, the driving component and the 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 sensing that a collision signal is sent to the driving component when the vehicle collides with a front object; the driving component is used for providing driving voltage for the electric early warning component; the electric early warning component is used for controlling the electrode to discharge under the action of the driving voltage so as to stimulate leg muscles of personnel on the vehicle. Therefore, according to the embodiment of the application, when the vehicle collides, the leg muscles of the person on the vehicle are stimulated through the electrode discharge, so that the body muscles of the person on the vehicle are in a tight state during collision, the injury during collision is reduced, and the driving safety is improved.
Description
Technical Field
The application relates to the technical field of driving safety, in particular to a collision protection system and method and a vehicle.
Background
With the rapid development of the automobile industry, automobiles are also commonly used as vehicles for every family, and people pay more attention to the safe driving performance of the vehicles.
In the anti-collision field of the existing vehicle, the distance between the current vehicle and a front object is mainly tested, when the tested distance is smaller than the set safety distance, the vehicle sends an early warning signal to a driver, and the driver takes emergency braking measures to prevent the vehicle from being collided.
However, on one hand, a longer human body reaction time exists between the time of receiving the early warning signal and the time of taking the braking measure, and an effective early warning effect still cannot be achieved, so that collision occurs; on the other hand, when collision happens, the existing early warning technology cannot protect personnel on the vehicle, and serious injury is caused.
Disclosure of Invention
In order to solve the technical problems in the prior art, the application provides a collision protection system, a method and a vehicle, which can stimulate leg muscles of a person on the vehicle through electrode discharge when the vehicle collides, so that body muscles of the person on the vehicle are in a tight state when the vehicle collides, reduce injuries in the collision and improve driving safety.
Therefore, the embodiment of the application provides the following technical scheme:
in a first aspect, an embodiment of the present application provides a collision protection system applied to a vehicle; comprising the following steps: the impact sensing component, the driving component and the 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 sensing that a collision signal is sent to the driving component when the vehicle collides with a front object;
the driving component is used for providing driving voltage for the electric early warning component;
the electric early warning component is used for controlling the electrode to discharge under the action of the driving voltage so as to stimulate leg muscles of personnel on the vehicle.
Optionally, the impact sensing component includes: a pressure sensitive resistor and a protection 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 is connected in series with the protection resistor;
the driving part includes: a high voltage generator; the high-voltage generator is connected with the protection resistor in parallel;
the electrical early warning component further comprises: a wire; the metal wire is connected with the electrode;
the pressure sensitive resistor is used for reducing the resistance of the pressure sensitive resistor when the vehicle collides with an object in front, and the voltage at two ends of the protection resistor is increased;
the high voltage generator is used for giving the electrode discharge when the voltage at two ends reaches the trigger voltage, and stimulating leg muscles of personnel on the vehicle by the metal wire connected with the electrode.
Optionally, the impact sensing component includes: a pressure sensitive resistor, a resistor detector and a 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 electrode to discharge and stimulates leg muscles of personnel on the vehicle.
Optionally, the electrical early warning component at least includes: a first electrode and a second electrode;
the first electrode corresponds to a first metal wire; the second electrode corresponds to a 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; the second end of the second electrode is connected with the second metal wire.
Optionally, the system further comprises: radar, controller and alarm components;
the radar is used for monitoring the distance between the vehicle and the object in front;
the controller is used for controlling the alarm component to alarm when the distance between the vehicle monitored by the radar and the object in front is smaller than a first preset threshold value.
Optionally, the alarm component is a light emitting diode and/or a buzzer.
Optionally, the system further comprises: a switch;
the switch is connected between the vehicle-mounted power supply and the alarm component;
and the switch is used for controlling the switch to be closed when the distance between the vehicle monitored by the radar and the object in front is smaller than a first preset threshold value, so that the vehicle-mounted power supply supplies power to the alarm component.
Optionally, the first preset threshold is related to a highest speed limit criterion of the road and a response time t of the switch.
In a second aspect, an embodiment of the present application provides a collision protection method, applied to a vehicle, including: the impact sensing component, the driving component and the 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 giving 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;
the electric early warning component controls the electrode to discharge under the action of the driving voltage so as to stimulate leg muscles of personnel on the vehicle.
In a third aspect, an embodiment of the present application provides a vehicle, including the crash protection system of the first aspect and an on-board power supply; the vehicle-mounted power supply is used for providing power for the collision protection system.
Compared with the prior art, the application has at least the following advantages:
the collision protection system comprises a collision sensing part, a driving part and an electric early warning part, wherein the electric early warning part is arranged below a vehicle seat, when a vehicle collides with an object in front, the collision sensing part generates a collision signal for the driving part, the driving part provides driving voltage for the electric early warning part, and the electric early warning part controls an electrode to discharge under the action of the driving voltage.
Therefore, when the vehicle collides, the electric early warning part positioned below the vehicle seat controls the electrode to discharge and stimulate leg muscles of the personnel on the vehicle under the action of the driving voltage, so that body muscles of the personnel on the vehicle are in a tightening state in the collision and airbag explosion process, and the injury of the personnel on the vehicle in the collision is reduced. In addition, leg muscles of the personnel on the vehicle are directly stimulated through electric shock, subjective reflection time of the personnel on the vehicle is reduced, human response time is shortened, and injuries suffered by the personnel on the vehicle in the vehicle collision process are reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a crash protection system according to an embodiment of the present application;
FIG. 2A is a block diagram of another crash protection system according to an embodiment of the present application;
FIG. 2B is a block diagram of yet another crash protection system according to an embodiment of the present application;
FIG. 3 is a block diagram of yet another crash protection system according to an embodiment of the present application;
FIG. 4 is a flowchart of a collision protection method according to an embodiment of the present application;
fig. 5 is a schematic diagram of a vehicle structure according to an embodiment of the present application.
Detailed Description
In order to make the present application better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In order to facilitate understanding of the technical scheme provided by the application, the background technology of the technical scheme of the application is briefly described below.
The inventor finds that the anti-collision system of the existing vehicle only sends an early warning signal to a driver when the distance between the test system and the vehicle in front is smaller than a preset safety distance, prompts the driver to take braking measures, reduces the probability of collision of the vehicle, and does not provide protection measures for reducing injury to personnel on the vehicle caused by collision when the vehicle collides.
Based on the above, the embodiment of the application 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 generates a collision signal for 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 electrodes to discharge and stimulate leg muscles of a person on the vehicle, so that the body muscles of the person on the vehicle are in a tight state in the collision process, and further, injuries of the person on the vehicle in the collision are reduced, and the driving safety is improved.
In order to facilitate an understanding of the present application by those skilled in the art, a crash protection system provided in accordance with the present application will be explained with reference to the accompanying drawings.
Example 1
Referring to fig. 1, a structural diagram of a collision protection system according to an embodiment of the present application is shown.
The collision protection system according to the embodiment is applied to a vehicle, and includes: an impact sensing part 101, a driving part 102, and a movie pre-warning part 103;
the electric warning unit 103 is arranged below the vehicle seat, and comprises an electrode 104.
The impact sensing component 101 is configured to send an impact signal to the driving component 102 when the vehicle collides with a front object.
The driving part 102 is configured to provide a driving voltage to the electrical early warning part 103.
The electric early warning part 103 is used for controlling the electrode 1031 to discharge under the action of the driving voltage so as to stimulate leg muscles of the personnel on the vehicle.
It should be noted that, in this embodiment, the voltage of the electric early warning unit 103 for controlling the electrode 104 to discharge is a safe voltage, which is smaller than the safe voltage that can be borne by the human body. Wherein the personnel on the vehicle may include the driver and the passengers.
In this embodiment, the electric warning device 103 is generally installed under a vehicle seat, so that when a vehicle collides with a front object, the electric warning device 103 controls the electrode 1031 to discharge to stimulate the leg muscles of the vehicle occupant, so that the muscles are in a tight state during the collision of the vehicle occupant, and injuries in the collision are reduced. In practical application, different numbers of electric early warning components can be installed according to the deployment condition of the vehicle seat. For example, a vehicle has 5 seats, and an electrical early warning unit is correspondingly installed below each seat, so that when the vehicle collides, leg muscles of a person on the vehicle on each seat can be stimulated by the electrical early warning unit.
The impact sensing component 101 is used for sensing whether the vehicle collides with a front object, so that the impact sensing component 101 can be installed at the front end of the vehicle, and when the vehicle collides with the front object, a collision event can be timely sensed, and a collision signal is sent to the driving component 102.
Of course, the impact sensing member 101 may be mounted at the rear end of the vehicle, and may sense the collision event in time and transmit the collision signal to the driving member 102 when the vehicle is knocked.
The impact sensing component 101 may be a pressure sensor, the pressure sensor is installed at the front end of the vehicle, when the vehicle collides with a front object, the pressure born by the pressure sensor increases sharply, a collision signal is sent to the driving component 102, when the driving component 102 receives the collision signal, a driving voltage is provided for the electric early warning component 103, and under the action of the driving voltage, the electrode is controlled to discharge, so that leg muscles of a person on the vehicle are stimulated.
Of course, the impact sensing component 101 may be any other device that can sense a collision of a vehicle, such as a pressure sensitive resistor, which is not limited in this embodiment.
The driving part 102 may be an in-vehicle power source, and when receiving the collision signal transmitted from the collision sensing part 101, the driving voltage is provided to the electric early warning part 103 by using the in-vehicle power source.
It can be appreciated that when the vehicle is not crashed, the vehicle-mounted power supply and the electric early-warning component 103 can be in a disconnected state, and the electric early-warning component 103 cannot control the electrode 1031 to discharge; when a vehicle collides, a closed loop is formed by the vehicle-mounted power supply and the electric early-warning part, the vehicle-mounted power supply supplies driving voltage to the electric early-warning part 103, and the early-warning part 103 controls the electrode 1031 to discharge under the action of the driving voltage so as to stimulate leg muscles of personnel on the vehicle.
In some embodiments, the electrical early warning device is disposed below the driver's seat to stimulate the driver's leg muscles.
In specific application, two electrodes can be arranged below the vehicle seat and respectively arranged at the positions of the two legs of the person on the vehicle, so that when the vehicle collides, the two legs of the person on the vehicle can be stimulated by the two electrodes respectively.
The collision protection system comprises a collision sensing part, a driving part and an electric early warning part, wherein the electric early warning part is arranged below a vehicle seat, when a vehicle collides with an object in front, the collision sensing part generates a collision signal for the driving part, the driving part provides driving voltage for the electric early warning part, and the electric early warning part controls an electrode to discharge under the action of the driving voltage. Therefore, when the vehicle collides, the electric early warning part positioned below the vehicle seat controls the electrode to discharge and stimulate leg muscles of the personnel on the vehicle under the action of the driving voltage, so that body muscles of the personnel on the vehicle are in a tightening state in the collision and airbag explosion process, and the injury of the personnel on the vehicle in the collision is reduced. In addition, the legs of the personnel on the vehicle are directly stimulated through electric shock, subjective reflection time of the personnel on the vehicle is reduced, and response time of the human body is shortened.
Example two
The above embodiments describe the implementation of the crash protection system functions, and the detailed description of the specific components of the crash protection system will be provided below in connection with the second embodiment.
Referring to fig. 2A, another embodiment of the present application provides a structural diagram of a collision protection system.
In this embodiment, the crash protection system crash sensing element 10 comprises a pressure sensitive resistor 101 and a protective resistor 102.
The pressure sensitive resistor 101 is installed at the front end of the energy absorption box, wherein the energy absorption box is installed at the front end of the vehicle and is used for absorbing collision energy when the vehicle collides, so that the effect of partial buffering is achieved. The pressure sensitive resistor 101 and the protection resistor 102 are connected in series.
The driving part 20 includes: a high voltage generator 201, said high voltage generator 201 being connected in parallel with said protection resistor 102.
The electrical early warning unit 30 further includes: a wire 302; the wire 302 is connected to the electrode 1031.
The pressure sensitive resistor 101 is configured to reduce the resistance of the pressure sensitive resistor 101 and increase the voltage across the protection resistor 102 when the vehicle collides with an object in front.
The pressure sensitive resistor 101 rises along with the pressure, the resistance value is rapidly reduced, and because the pressure sensitive resistor and the protection resistor are connected in series, when the vehicle collides with an object in front, the energy-absorbing 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 discharging the electrode 1031 when the voltage between the two ends reaches the trigger voltage, and stimulating leg muscles of a person on the vehicle by the 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 reaches the trigger voltage, the output end of the high-voltage generator discharges through the electrode, and the voltage output by the output end of the high-voltage generator is a safe voltage which is smaller than the bearable voltage of a human body, so that the safety of the human body is ensured.
In this embodiment, when a vehicle collides, the resistance value of the pressure sensitive resistor is reduced, the pressure sensitive resistor and the protection resistor are connected 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 in parallel with the protection resistor, 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 vehicle personnel are stimulated through the metal wire sewed on the upper surface of the vehicle personnel seat, so that the body muscles of the vehicle personnel are in a tight state in the collision and airbag explosion process, and the injuries of the vehicle personnel in the collision are reduced.
In some embodiments, the impact sensing member 10 includes: a pressure sensitive resistor 101, a resistor detector 103 and a controller 104.
The resistance detector 103 is used for detecting the resistance value of the pressure sensitive resistor 101;
the controller 104 is configured to control the driving unit 20 to provide a driving voltage for the electric early-warning unit 30 when the resistance value detected by the resistance detector 103 is less than a preset resistance threshold, so that the electric early-warning unit 30 controls the electrode 1031 to discharge, and stimulates leg muscles of a person on the vehicle.
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 borne by the pressure sensitive resistor is larger, it is determined that the vehicle collides, and the controller 104 controls the electrode 1031 to discharge.
For ease of understanding, reference is made to fig. 2B, which is a block diagram of yet another crash protection system provided by the present application, in which a resistance detector detects the resistance value of a pressure sensitive resistor, and when the detected resistance value is less than a preset resistance threshold, a controller controls a high voltage generator to discharge through an electrode and stimulate leg muscles of a person on a vehicle by a wire.
When the electric early warning device is specifically applied, in order to avoid the electrode from faults, the leg of the person on the vehicle cannot be stimulated in time, and in order to ensure the safety of the person on the vehicle, the electric early warning part at least comprises two electrodes, and two electrodes can be arranged below the seat of the person on each vehicle.
In some embodiments, the electrical early warning component comprises at least: a first electrode and a second electrode;
the first electrode corresponds to a first metal wire; the second electrode corresponds to a 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 to the first wire.
The first end of the second electrode is connected with the second output end of the high-voltage generator; the second end of the second electrode is connected with the second metal wire.
By the above description, the collision protection system of the present embodiment has the function of reducing injury to personnel on the vehicle during a collision when the vehicle collides. Of course, the vehicle can also be used for reminding a driver to take braking measures in time when the distance between the vehicle and the object in front is relatively short, so that collision between vehicles is avoided.
In some embodiments, the system further comprises: radar, controller and alarm components.
The radar is used for monitoring the distance between the vehicle and the object in front; the controller is used for controlling the alarm component to alarm when the distance between the vehicle monitored by the radar and the object in front is smaller than a first preset threshold value.
The radar can be an ultrasonic radar which is arranged beside a fog lamp in front of the vehicle, and the transmitting direction of the ultrasonic radar is in front of the vehicle so as to monitor the distance between the vehicle and an object in front.
The controller can be a singlechip, and is integrated on the vehicle-mounted computer, so that when the distance monitored by the radar is smaller than the safety distance, the singlechip sends out an electric signal to control the switch to be closed, and the vehicle-mounted power supply gives the warning component power supply.
The alert means may be a light emitting diode and/or a buzzer, that is, the alert means may be a light emitting diode, or a buzzer, or a light emitting diode and a buzzer. Of course, the warning device may be other devices that can be used to alert the driver to safe driving, and the present embodiment is not limited herein.
The light emitting diode can be arranged on an instrument panel of the vehicle, so that a driver can observe the light 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 performance of different vehicles, actual road conditions or empirical values.
When the radar detects 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 emit sound, so that a driver is warned of the fact that the distance between the vehicle and the front object is relatively close, and the driver can be conveniently decelerated or take braking measures to avoid accidents.
Considering that the capacitance of the vehicle-mounted power supply is limited, in order to save the electric quantity, a switch can be arranged in the system, when the vehicle is at a safe distance from a front object, 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 front object is smaller than the safe distance, the controller controls the switch to be closed, so that the vehicle-mounted power supply and the warning component are in a connection state, and the vehicle-mounted power supply supplies power for the warning component, so that 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 is used for controlling the switch to be closed when the distance between the vehicle monitored by the radar and a 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 the first preset threshold, the controller sends an electrical 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 the driver.
In addition, when the system includes a switch, the present embodiment also proposes a defining method for the first preset threshold, where the first preset threshold is defined according to the switch response time and the highest road speed limit standard.
In some embodiments, the first preset threshold is related to a road maximum speed limit criterion Vmax and a response time t of the switch.
For example, the highest speed limit standard Vmax of the domestic road is 120Km/h, namely 3.3m/s; the switch is selected so as to electrically trigger the on-off switch, the response time t is generally 0.1, and the first preset threshold value s=vmax×t=3.3m, namely when the radar monitors that the distance between the vehicle and the object in front is smaller than 3.3m, the controller sends a control signal to control the switch to be closed, and the warning component warns the driver under the action of the vehicle-mounted power supply.
According to the collision protection system provided by the embodiment of the application, 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 muscles of the legs of the vehicle personnel are stimulated through the metal wire sewed on the upper surface of the seat of the vehicle personnel, so that the muscles of the body of the vehicle personnel are in a tight state in the collision and airbag explosion process, and the injuries of the vehicle personnel in the collision are reduced.
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 object in front is smaller than the safe distance, the controller sends out an electric signal to control the warning component to work, so that a driver is timely reminded of reducing the speed of the vehicle or emergency braking, collision is avoided, and safe driving is improved.
Example III
In order to facilitate understanding of the technical solution provided by the embodiments of the present application by those skilled in the art, a collision protection system will be described in its entirety, where the collision protection system may include two parts, the first part being used to prompt the driver in time before the collision; the second portion is used to protect personnel on the vehicle when the vehicle collides, so as to reduce injuries during the collision.
Referring to fig. 3, a block diagram of yet another crash protection system according to an embodiment of the present application 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, on-board power supply 307, high voltage generator 308, electrode 1031a, electrode 1031b, wire 302a, wire 302b.
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 is connected to the switch 303 through a wire.
The switch 303, the pressure sensitive resistor 304, the protection resistor 305, the light emitting diode 306 and the vehicle power supply 307 are connected in series through 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 front end energy absorption box of the vehicle; the light emitting diode 306 may be mounted above the dashboard so as to be viewable by the driver.
The input end of the high voltage generator 308 is connected with the protection resistor 305 in parallel, the output end is respectively connected with the electrode 1031a and the electrode 1031b, and the electrode 1031a and the electrode 1031b are respectively connected with the metal wire 302a and the metal wire 302b. Wires 302a and 302b are sewn to the driver's seat surface in a position where the seat supports the thigh muscles of the driver.
In this embodiment, the distance between the vehicle and the object in front is detected by the radar 301 installed in front of the vehicle, and when the radar 301 measures that the distance is smaller than the safe distance, the controller 302 sends out an electrical signal to control the switch 303 to be closed, the light emitting diode 306 and the vehicle-mounted power supply 307 form a closed loop, the light emitting diode 306 emits light to remind the driver of safe driving, and the safe distance is kept between the light emitting diode 306 and the object in front, so that collision is avoided.
When the vehicle collides with an object in front, the crash box is extruded to transmit pressure to the pressure sensitive resistor 304, so that the resistance of the pressure sensitive resistor 304 is reduced, and the partial pressure at two ends of the protection resistor 305 is increased due to the fact that the protection resistor 305 is connected with the pressure sensitive resistor 304 in series and the total resistance and the resistance of the pressure sensitive resistor 304 are reduced under the condition that the voltage of the vehicle-mounted power supply 307 is stable. Meanwhile, since 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 will also rise, 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 the 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 collision and airbag explosion processes, and the injuries of the driver in the collision are reduced.
From the above description, it is possible to clearly understand the specific operation of the crash protection system provided in this embodiment before and at the time of occurrence of a crash, and the selection of the respective components in this embodiment will be explained below.
In this embodiment, the safety distance s=vmax×t may be determined according to the highest speed limit standard Vmax of the road and the switch response time t, and when the radar detects that the distance between the vehicle and the object ahead is smaller than S, the trigger controller controls the switch to be turned on.
The finite element model of the designed vehicle model is established through a finite element method, and the pressure Fmax generated when the vehicle collides with the rigid wall at the front of the highest speed limit Vmax is obtained through explicit solution, so that the pressure which can be born by the finite element model 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 voltage value of the vehicle-mounted power supply, and Rmax is the resistance value of the pressure sensitive resistor when the pressure is not applied.
Determining the minimum total resistance value R2=R0+Rmin=U0/Imax of the protection resistor and the pressure sensitive resistor according to the maximum current Imax of the light emitting diode; wherein Rmin is the resistance value of the pressure sensitive resistor when Fmax pressure is applied.
According to the input voltage Ui of the high-voltage generator and the human body bearable safety voltage Up, determining the voltage amplification factor A=Up/Ui of the high-voltage generator, wherein Ui is the trigger voltage input by the high-voltage generator.
And determining the minimum resistance values of the protection resistor and the pressure sensitive resistor in 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, ui=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, when the resistance value of the selected pressure sensitive resistor meets the pressure Fmax, the resistance value is Rmin, and when the pressure is 0, the resistance value is Rmax.
In order to facilitate understanding, a certain vehicle model will be taken as an example, and the collision peak force of the rear end of the energy-absorbing box is measured to be 70KN when the finite element model collides with the rigid wall by an explicit mechanical simulation method.
The rated current I0 of the selected light emitting diode is 2mA, the vehicle-mounted power supply is 12V, and the maximum total resistance value R1=R0+Rmax=12000V/2 A=6000 omega of the protection resistor and the pressure sensitive resistor.
The maximum current Imax of the light emitting diode is 4mA, and the minimum total resistance value r2=r0+rmin=12000V/4a=3000 Ω of the protection resistance and the pressure sensitive resistance is determined.
The input trigger voltage Ui of the high-voltage generator is 3V, and the voltage amplification factor a=36/3=12 of the high-voltage generator is selected according to the fact that the human body can bear the safety voltage Up which is generally 36V.
According to the input trigger voltage Ui of the high voltage generator being 3V and the vehicle power supply voltage U0 being 12V, determining the minimum value of the protection resistor and the pressure sensitive resistor, wherein if 3=12×r0/3000, R0 is 750Ω, rmin is 2250Ω, and Rmax is 5250Ω.
Therefore, the resistance value of the pressure sensitive resistor should satisfy that when the pressure Fmax is 70KN, the resistance Rmin is 2250Ω, and when the pressure is 0, the resistance Rmax is 5250Ω.
The embodiment has the advantages of early warning before collision and protecting the driver in the collision process, and the LED is used for warning the driver before collision, so that the driver is protected by stimulating muscles to tighten when collision occurs, and the injury in the collision is reduced. On one hand, the electric shock method is adopted to directly stimulate the legs, so that the muscles of a driver are tensed in collision, the subjective reflection time of the driver is reduced, and the protection effect on the driver is better; on the other hand, the embodiment controls the switch to be closed to form a closed loop when the vehicle approaches to a front object, and generates an electric shock effect when collision is detected through the pressure sensitive resistor, so that error electric shock to a driver is effectively avoided, the energy-saving performance is good, the repeated utilization is strong, and the reliability is high.
Example IV
Based on the collision protection system provided in the foregoing embodiment, this embodiment also provides a collision protection method, which will be described with reference to the accompanying drawings.
Referring to fig. 4, a flowchart of a collision protection method according to an embodiment of the present application is shown.
The method of the present embodiment is applied to a vehicle, and includes: impact sensing components, driving components and electrical pre-warning components.
Wherein, the electricity early warning part sets up in the vehicle seat below, the electricity early warning part includes the electrode.
S401: the collision sensing part gives a collision signal to the driving part when the vehicle collides with a front object.
S402: the driving part provides driving voltage for the electric early warning part according to the received collision signal.
S403: the electric early warning component controls the electrode to discharge under the action of the driving voltage so as to stimulate leg muscles of personnel on the vehicle.
It should be noted that the method of the present embodiment may be applied to the collision protection system shown in fig. 1, 2 and 3, and the description of the present embodiment is omitted herein.
According to the method provided by the embodiment of the application, when the vehicle collides with the object in front, the collision sensing component generates a collision signal for the driving component, so that the eastern 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 to stimulate the leg muscles of the personnel on the vehicle, so that the body muscles of the personnel on the vehicle are in a tight state during collision, the injury in collision is reduced, and the safety of the personnel on the vehicle is protected.
Example five
Based on the collision protection system and method provided by the embodiment, the application further provides a vehicle, and the vehicle will be described in detail with reference to the accompanying drawings.
Referring to fig. 5, a schematic diagram of a vehicle structure according to an embodiment of the present application is shown.
The vehicle provided in this embodiment includes the collision protection system 501 of the first embodiment, the second embodiment, or the third embodiment, and the in-vehicle power supply 502.
A collision protection system 501 for providing a driving voltage to the electric early warning part by the driving part by sending a collision signal to the driving part when the vehicle collides with a front object; and the electrode discharge is controlled under the action of the driving voltage to stimulate leg muscles of the personnel on the vehicle.
An in-vehicle power supply 502 for supplying power to the collision system 501.
The vehicle that this embodiment provided can utilize collision protection system to provide the protection for personnel on the car, and when the vehicle bumps with the place ahead object, the electricity early warning part that is located the vehicle seat below, under driving voltage's effect, control electrode discharge stimulative personnel's on the car shank muscle for personnel's on the car body muscle is in the state of tightening in collision and gasbag point explosion in-process, reduces personnel's on the car injury in the collision.
The above description is only of the preferred embodiment of the present application, and is not intended to limit the present application in any way. While the application has been described with reference to preferred embodiments, it is not intended to be limiting. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present application or modifications to equivalent embodiments using the methods and technical contents disclosed above, without departing from the scope of the technical solution of the present application. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present application still fall within the scope of the technical solution of the present application.
Claims (8)
1. A crash protection system for use with a vehicle; comprising the following steps: the impact sensing component, the driving component and the 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 sensing that a collision signal is sent to the driving component when the vehicle collides with a front object;
the driving component is used for providing driving voltage for the electric early warning component;
the electric early warning component is used for controlling the electrode to discharge under the action of the driving voltage so as to stimulate leg muscles of personnel on the vehicle;
wherein the impact sensing member comprises: a pressure sensitive resistor and a protection 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 is connected in series with the protection resistor;
the driving part includes: a high voltage generator; the high-voltage generator is connected with the protection resistor in parallel;
the electrical early warning component further comprises: a wire; the metal wire is connected with the electrode;
the pressure sensitive resistor is used for reducing the resistance of the pressure sensitive resistor when the vehicle collides with an object in front, and the voltage at two ends of the protection resistor is increased;
the high voltage generator is used for giving the electrode discharge when the voltage at two ends reaches the trigger voltage, and stimulating leg muscles of personnel on the vehicle by the metal wire connected with the electrode;
or, the impact sensing member includes: a pressure sensitive resistor, a resistor detector and a 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 electrode to discharge and stimulates leg muscles of personnel on the vehicle.
2. The crash protection system of claim 1, wherein said electrical early warning means comprises at least: a first electrode and a second electrode;
the first electrode corresponds to a first metal wire; the second electrode corresponds to a 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; the second end of the second electrode is connected with the second metal wire.
3. The crash protection system of claim 1, wherein said system further comprises: radar, controller and alarm components;
the radar is used for monitoring the distance between the vehicle and the object in front;
the controller is used for controlling the alarm component to alarm when the distance between the vehicle monitored by the radar and the object in front is smaller than a first preset threshold value.
4. A collision protection system according to claim 3, in which the warning means is a light emitting diode and/or a buzzer.
5. The crash protection system of claim 3 or 4, wherein said system further comprises: a switch;
the switch is connected between the vehicle-mounted power supply and the alarm component;
and the switch is used for controlling the switch to be closed when the distance between the vehicle monitored by the radar and the object in front is smaller than a first preset threshold value, so that the vehicle-mounted power supply supplies power to the alarm component.
6. The crash protection system of claim 5 wherein said first preset threshold is related to a highest speed limit criterion of the roadway and a response time t of said switch.
7. A collision protection method, applied to a vehicle, comprising: the impact sensing component, the driving component and the 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 giving 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;
the electric early warning component controls the electrode to discharge under the action of the driving voltage so as to stimulate leg muscles of personnel on the vehicle;
wherein the impact sensing member comprises: a pressure sensitive resistor and a protection 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 is connected in series with the protection resistor;
the driving part includes: a high voltage generator; the high-voltage generator is connected with the protection resistor in parallel;
the electrical early warning component further comprises: a wire; the metal wire is connected with the electrode;
when the vehicle collides with a front object, the resistance of the pressure sensitive resistor is reduced, and the voltage at two ends of the protection resistor is increased;
when the voltage between the two ends reaches the trigger voltage, the high voltage generator gives the electrode discharge, and the wire connected with the electrode stimulates the leg muscles of the person on the vehicle;
or, the impact sensing member includes: a pressure sensitive resistor, a resistor detector and a controller;
the resistance detector detects the resistance value of the pressure sensitive resistor;
when the resistance value detected by the resistance detector is smaller than a preset resistance threshold value, the controller controls the driving component to provide driving voltage for the electric early-warning component, so that the electric early-warning component controls the electrode to discharge and stimulates leg muscles of personnel on the vehicle.
8. A vehicle, characterized by comprising: the crash protection system of any one of claims 1 to 6; further comprises: a vehicle-mounted power supply;
the vehicle-mounted power supply is used for providing power for the collision protection system.
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