Automatic device for preventing vehicles against collision

FIELD: automotive industry.

SUBSTANCE: device comprises unit for measuring absolute velocity of a vehicle, differentiator, unit for computing safety distance between the vehicles, comparator, actuating members of the breaking system and system for engine control, locator, unit for determining steady deceleration of vehicle, unit for determining brake delay, memory, unit for determining correction to the safety distance, unit for measuring absolute velocity, and pressure gages in the drive for brakes and beginning of braking. The comparator sends a command to the unit for determining the rotation angle of controlled wheels that sends a signal to the electromagnetic valve of the control of actuating member of the steering.

EFFECT: expanded functional capabilities.

1 dwg

 

The invention relates to vehicles and can be used in an automatic control device for vehicle to prevent a collision of the car by controlling the direction of movement of the steered wheels of the vehicle in case of unexpected obstacles. The device is applicable to vehicles with pneumatic or hydraulic drive systems brakes, abs systems, and equipped with hydraulic power steering.

A device for automatically braking a vehicle in front of the obstacle that contains the unit of measurement of the absolute velocity of the vehicle associated with the differentiator and the computing unit a safe distance between the vehicle and the leader, the output of which is connected to the unit of comparison associated with the Executive bodies of the braking system and engine management, and a locator, one of the outputs of which are connected to said block of comparison, and the other to said computing unit a safe distance, and the unit for determining the steady deceleration of the vehicle associated with the output of the differentiator, and the detector limit deceleration, the outputs of which are connected to the inputs of these blocks define the set is segosa deceleration of the leader, the definition block lag brakes, a storage device, the information input of which is connected to the outputs of these blocks determine the steady deceleration of the leader block definitions lag brakes, and an enable input to the detector output limit deceleration, and block definitions amendments to the magnitude of the safe distance, the output of which is connected to the unit of comparison, and the inputs associated with the specified storage device and unit of measurement of the absolute velocity, the device has a pressure sensor in the brake gear and the sensor of the beginning of braking, the outputs of which together with the output of the differentiator is connected to the detector limit deceleration, and block definitions lag brakes.

A disadvantage of the known device is that when a sudden obstacle distance from the vehicle to the obstacle may be less than the shortest possible braking distance and the device will not be able to prevent a collision.

The technical result is to change the direction of movement of the vehicle when it is impossible to avoid the collision by braking due to suddenly appearing obstacles.

The technical result is achieved that the device to automatically prevent the collision transport the CSO funds contains the unit of measurement of the absolute velocity of the vehicle associated with the differentiator and the computing unit a safe distance between the vehicle and the leader, the output of which is connected to the unit of comparison associated with the Executive bodies of the braking system and engine management, locator, one of the outputs of which are connected to said block of comparison, and the other to said computing unit to a safe distance, the block determining the steady deceleration of the vehicle associated with the output of the differentiator, and the detector limit deceleration, the outputs are connected to the inputs of the block definition of the steady deceleration of the leader block definitions lag brakes; a storage device, the information input which is connected to the outputs of these blocks determine the steady deceleration of the leader, the steady deceleration of the vehicle and lag brakes, and an enable input to the detector output limit deceleration unit definitions the amendments to the magnitude of the safe distance, the output of which is connected to the unit of comparison, and the inputs associated with the specified storage device, and the unit of measurement of the absolute velocity, pressure sensors in the drive brakes and the braking start time, the outputs of which together with the output is om differentiator connected to the detector limit deceleration and definition block lag brakes, the device is additionally equipped with a system for steering the steered wheels (CN, K), including the Executive body of the steering wheel with electromagnetic control valve associated with the unit for determining the angle of steering and the power steering pump, power cylinder of the power steering, which in turn is connected with the driven wheels, and a power-off electromagnetic valve control with sensor disconnected.

Distinctive features of the prototype is that the device is additionally equipped with a system for steering the steered wheels (CN, K), including the Executive body of the steering wheel with electromagnetic control valve associated with the unit for determining the angle of steering and the power steering pump, power cylinder of the power steering, which in turn is connected with the driven wheels, and a power-off electromagnetic valve control with sensor disable, as well as links previously used and the newly introduced nodes.

The drawing shows a block diagram of an automatic device to prevent vehicle collisions.

The proposed device is a set of locator 1 to determine the distance L to the obstacle (the leader) and the relative velocity V0TH vehicle and unit 2 measurement of the absolute velocity Vabstransport means connected to the block 3 calculate the safe distance D between the vehicle and the leader, the output of unit 2 measurement of the absolute velocity is connected to the input of the differentiator 4, the output of which is connected to the input unit 5 determine the steady deceleration of the vehicle and parallel to the outputs of the sensors 6 and 7, the pressure in the brake gear and start braking, to the inputs of the detector 8 marginal slowing and block 9 determine the lag brakes, and the output unit 5 determine the steady-state deceleration and detector 8 connected to the inputs of the block 10 determine the steady deceleration of the leader, the output of which, together with the outputs of blocks 5 and 9 define the steady deceleration of the vehicle and lag brakes connected to information inputs of the storage device 11, for allowing the input of which is connected to the output of the detector 8, and the outputs of the storage device 11 together with the output of unit 2 measurement of the absolute velocity is connected to the inputs of the block 12 defining a amendment d to value a safe distance 0, the output of which together with the output of the locator 1 and block 3 calculate the safe distance is connected to the inlet 13 of the comparison, the output of which is attached to the block 14 of the display, to the Executive bodies of the engine management system 15 and the brake system 16, block determine the rotation angle of the steered wheels 18, which sends a signal to the electromagnetic control valve of the Executive body of the steering wheel 17, the output of which is fed the signal from the power-off electromagnetic valve 19, to the input of which is connected the sensor off CN, K 20, which switches off the system after entry into the work of the driver.

The unit will operate according to the algorithm of the known device for automatically braking a vehicle in front of the obstacle until a sudden obstacles. If the distance to the obstacle is less than the shortest possible braking distance, block 13 comparison issues a command to the unit 18 for determining the angle of steering and the electromagnetic control valve of the Executive body of the steering wheel 17. By moving the electromagnetic control valve 17 is supplied with working fluid from the secondary output of the power steering pump 21 in the cavity (left or right) of the power cylinder of the power steering 22 depending on the generated signal to the control unit 23, which provides the taxiing steered wheels to the left (right). In accession to the work of the driver (moving p the left of the controlled body to the left (right)) triggers the reed sensor disable CN, K 20, which sends a signal to block off electromagnetic valve 19. Block off electromagnetic valve 19 sends a signal to the electromagnetic control valve of the Executive body of the steering wheel 17, which is moving in its original position, disconnecting the system an additional output of the power steering pump 21 - cavity (left or right) of the power steering cylinder 22".

The proposed device leads to the reduction of injuries and economic damage from traffic accidents caused by unexpected obstacles, which is the direct cause of a significant number of vehicle collisions, collisions with obstacles, and pedestrians.

The automatic device for preventing collision of a vehicle containing the unit of measurement of the absolute velocity of the vehicle associated with the differentiator and the computing unit a safe distance between the vehicle and the leader, the output of which is connected to the unit of comparison associated with the Executive bodies of the braking system and engine management, locator, one of the outputs of which are connected to said block of comparison, and the other to said computing unit to a safe distance, block definitions established samedl the of the vehicle, associated with the output of the differentiator and the detector limit deceleration, the outputs of which are connected to the inputs of the block definition of the steady deceleration of the leader block definitions lag brakes, a storage device, the information input of which is connected to the outputs of these blocks determine the steady deceleration of the leader, the steady deceleration of the vehicle and lag brakes, and an enable input to the detector output limit deceleration unit definitions the amendments to the magnitude of the safe distance, the output of which is connected to the unit of comparison, and the inputs associated with the specified storage device and unit of measurement of the absolute velocity, pressure sensors in the drive brakes and the braking start time, the outputs of which together with the output of the differentiator is connected to the detector limit deceleration and definition block lag brakes, characterized in that the block comparison issues a command to the block definition of the rotation angle of the steered wheels, which sends a signal to the electromagnetic control valve of the Executive body of the steering control, the output of which is fed the signal from the power-off electromagnetic valve to the input of which is connected to the sensor system shutdown steering steered wheels, which shuts down the system after in the mark in the work of the driver, moreover, by moving the electromagnetic valve control of the Executive body of the steering control is supplied with working fluid from the secondary output of the power steering pump into the cavity of the left or right of the power cylinder of the power steering depending on the generated signal in the control unit.



 

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FIELD: methods of preventions of auto collisions by means of usage of optical radiation.

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2 dwg, 1 tbl

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