83results about How to "Avoid secondary collision" patented technology

The invention discloses a counterguard system for small-bias head-on collision of vehicles. The counterguard system comprises a small-bias counterguard (1), two installing supports (A) parallel to each other are welded to the bottom of the small-bias counterguard, each installing support is correspondingly provided with a row of ground anchors (4) laid on a firm foundation, a cylinder (5) matched with an inner cavity of the ground anchor is placed in each ground anchor, each ground anchor corresponds to one first fastening screw (6), and the first fastening screws sequentially penetrate through the installing supports and the cylinders to be locked with the ground anchors from top to bottom. An existing automobile test site is ingeniously improved, the investment cost is low, the project amount is small, the installing mode of horizontally installing the small-bias counterguard on the ground anchors laid on the firm foundation is creatively changed from the installing mode of vertically installing the small-bias counterguard on a fixed rigid wall, secondary collision after vehicle bodies collide is avoided, and the bottleneck that at present, a small-bias collision test can not be performed due to limitation of sites and equipment in China is broken through.

The subject matter relates to a method for determining a trajectory of a robot's end effector, comprising: obtaining a collision force of a robot's end effector caused by a collision of the end effector when the collision is detected; and determining a second trajectory of the end effector based on the obtained collision force of the end effector and a recorded first trajectory of the end effector, wherein the trajectory has trajectory information including a position vector, a velocity vector, and an acceleration vector of each trajectory point, and wherein the first trajectory is a trajectory before the collision, and the second trajectory is a trajectory after the collision. With the method, an efficient protection for the robot and its working environment at the moment of collision maybe achieved.

A human head impacting test device comprises a support, an impacting mechanism, a lifting mechanism, a sample hanging basket, a head hanging bag and the like. The lifting mechanism is installed at the top of the support, and the lifting mechanism is connected with an electromagnet through a lifting steel rope; a sliding block is embedded in an upper beam of the support and is connected with the sample lifting basket suspended inside the support; a travel switch and a speedometer are installed on a front beam on one side of the support; a buffering energy-absorption device is installed on a support base; and the head lifting bag is suspended on the upper beam of the support, and the impacting mechanism makes two guide posts vertically installed on the support as a guide mechanism, and vertical impacting is achieved. The human head impacting test device is simple and reasonable in structure and convenient to operate; an impacting object collides with the buffering energy-absorption device after impacting the head, the buffering energy-absorption device can automatically rise in a facilitating mode, therefore secondary collision is avoided, and data collection is reliable; and real load characteristics of the human body during impacting are simulated through a spring hanging bracket and the lifting bag, so that test results are more valuable.

The invention provides a braking takeover system and method, and relates to the field of vehicle driving. The braking takeover system is applied to vehicles, and includes a vehicle body collision sensor, an electronic stabilization system and an electronic parking system, wherein the vehicle body collision sensor is used for monitoring collision of the vehicles, and sending the collision information to the electronic stabilization system when the vehicle collision is detected, and the electronic stabilization system is used for receiving the collision information, controlling the operation ofthe braking takeover vehicles when the collision information satisfies a preset condition, and sending the operation control information to the electronic parking system. The electronic parking systemis used for receiving the operation control information and controlling the stopping and braking of the vehicles. The method can prevent the vehicle from losing control and causing secondary collisions, and reduce the damage of vehicle collision accident by controlling the operation of the vehicles under the preset condition.

The invention discloses a telescopic step-by-step layered buffering vehicle bumper, and belongs to the field of vehicle bumpers. The bumper comprises a bumper shell assembly, an energy absorption block, a bumper beam, a bumper support, a first-stage buffer mechanism, a second-stage buffer mechanism, a valve base assembly and a bearing plate. The primary buffer mechanism comprises a first support,a second support and a plurality of spiral springs; the first-stage buffer mechanism can ensure that the bumper absorbs energy during torsional vibration rotation. Therefore, overlarge torsional vibration and impact amplitude in impact are attenuated; a common amplitude value of a resonance region in impact is inhibited and a large torque is transmitted; even if the collision direction of the external force is uncertain, when the vehicle bumper is collided, multi-stage buffering can be carried out through the two-stage buffering mechanism, that is to say, the two-stage buffer mechanism can convert the vertical impact load into the horizontal transverse impact load, and can buffer the horizontal transverse impact load to play an important role in improving the impact energy absorption effect, improving the vehicle collision safety and protecting pedestrians.

The invention discloses a multiple protection integrated helicopter anti-crash seat which comprises a main skeleton, a weighing sensor, a magneto-rheological damping system, an upper torso forced tightening and quick releasing system, a seat bucket, a multifunctional vest and a controller; the seat bucket is in sliding connection with the main skeleton in a vertical direction; the magneto-rheological damping system is fixedly arranged on the seat bucket and is connected with the main skeleton through the weighing sensor; the upper torso forced tightening and quick releasing system is arrangedon the seat basin; the multifunctional vest is connected with the seat bucket through the upper torso forced tensioning and quick releasing system; and the controller is respectively connected with the weighing sensor and the magneto-rheological damping system. The multiple protection integrated helicopter anti-crash seat has excellent anti-crash performance and protection performance, can provideoptimal protection for all percentile occupants, enables a pilot to maintain an optimal posture, prevents secondary collision, has a quick releasing function, can realize one-key unlocking, and meetsthe life-saving requirements for various complex environments after the pilot falls.

The invention discloses a vehicle collision protection system which comprises an acceleration speed induction unit and an embedded processing unit. The embedded processing unit is connected with the acceleration speed induction unit, the acceleration speed induction unit is used for detecting the acceleration speed of a vehicle and sending collision signals to the embedded processing unit when the acceleration speed of the vehicle is larger than or equal to a preset acceleration speed protection threshold value, and the embedded processing unit is used for controlling input and/or output of high-voltage power of the system to be cut off when receiving the collision signals. Through the mode, the vehicle can be prevented from being threatened by the high-voltage power after a collision happens in the running and/or charging process, and therefore personal safety can be guaranteed.

The invention discloses a two-stage bumper body energy-absorbing bumper comprising a first stage bumper body and a second bumper body which are fixedly connected through a bolt; a buffer slot is installed between the first stage bumper body and the second stage bumper body; the buffer slot is provided with an unilateral movement sleeve, a large air spring and a small air spring. The two-stage bumper body energy-absorbing bumper is compact and has simple structure and reasonable design, easy assembly, reliable connection, and can effectively mitigate and absorb the impact pressure from the outside; and by means of the unilateral movement sleeve, secondary bump problem occurs during sudden stop can be effectively prevented; the air bag in the second stage bumper body can play a role of buffer and protection so that failure due to first stage bumper damage caused by excessive impact force is prevented and therefore the impact force is reduced to the smallest; personal property safety is effectively protected, the driving security is greatly increased and the bumper is easy to use and promoted.

The invention relates to a method and a device for controlling vehicle braking and a vehicle, and the method comprises the steps: obtaining the collision type of a current vehicle after the current vehicle is collided; acquiring driving information of the current vehicle according to the collision type; determining whether the current vehicle is in a safe state according to the driving information; under the condition that it is determined that the current vehicle is in the safe state, obtaining driving parameter information of the current vehicle, determining the consciousness state of the driver according to the driving parameter information, wherein the consciousness state comprises a non-intelligence state and an intelligence state; and under the condition that the consciousness stateis determined to be a non-intelligent state, controlling the current vehicle to brake. According to the method, the influence of the driving information of the current vehicle and the consciousness state of the driver on secondary collision after collision can be comprehensively considered, and the problem that beneficial subjective risk avoiding operation implemented by the driver is shielded canbe avoided, so that secondary collision can be flexibly and effectively avoided, and damage of collision to the vehicle is relieved.

The invention relates to the technical field of passive safety of vehicles, in particular to an energy absorption type bumper. A front inverted-U-shaped beam and a rear inverted-U-shaped beam of the bumper are fixedly connected together through a bolt, a buffer chamber is formed between the front inverted-U-shaped beam and the rear inverted-U-shaped beam, a folding supporting plate and at least 5 air springs are installed in the buffer chamber, and two round corners at the tail end of the folding supporting plate are of circular-arc T-shaped supporting structures, so that a buffering effect is played when collision occurs at the round corners. The bumper is simple in structure and compact and reasonable in installation, does not need a too large space, can effectively decrease and absorb most of outside impact energy and better plays buffering and vibration attenuation effects, the impact resistance of the vehicle bumper is improved, meanwhile the collision strength can be minimized, accordingly the personal and property safety can be effectively ensured, and the safety of an automobile in running is greatly improved. Therefore, the energy absorption type bumper is easy to use and popularize.

The invention discloses a working method of an airborne occupant multi-stage airbag cooperative buffer seat. The multi-stage airbag cooperative buffer seat comprises an upper air chamber, a middle airchamber and a lower air chamber; the upper air chamber, the middle air chamber and the lower air chamber are arranged by stacking from top to bottom, the upper air chamber can exhaust to the outsidethrough an upper air chamber exhaust valve for decompression, and can exhaust to the middle air chamber through a combined exhaust valve, and the middle air chamber is expanded to achieve first-stagebuffer; the middle air chamber can exhaust to the outside through a middle air chamber exhaust valve, and can further exhaust to the lower air chamber through a second combined exhaust valve, and thelower air chamber is expanded to achieve secondary buffer; the lower air chamber can exhaust to the outside through a lower air chamber exhaust valve to achieve three-stage buffer; the multi-stage buffer method of the multi-stage airbag cooperative buffer seat can prevent a human body from colliding secondly with the interior of a fighting vehicle, achieve multi-stage release of the internal pressure of the airbag buffer seat, and prevent the airbag buffer seat from blasting, thereby effectively ensuring a safe landing of an airborne occupant.

The invention discloses a multi-stage airbag cooperative buffering seat for an airborne occupant. The seat comprises an upper air chamber, a middle air chamber and a lower air chamber which are stacked from top to bottom; the upper air chamber can discharge air and release pressure through an air discharge valve of the upper air chamber and also discharge air to the middle air chamber through a first combined air discharge valve, and the middle air chamber expands to achieve first-stage buffering; the middle air chamber can discharge air and release pressure to the exterior through an air discharge valve of the middle air chamber and also discharge air to the lower air chamber through a second combined air discharge valve, and the lower air chamber expands to achieve second-stage buffering; the lower air chamber can discharge air and release pressure to the exterior through an air discharge valve of the lower air chamber to achieve third-stage buffering. Through multi-stage buffering of the multi-stage airbag cooperative buffering seat, not only can secondary collision between the human body and chariot interior parts be prevented, but also the multi-stage release of pressure in the airbag buffering seat can be achieved, the airbag buffering seat is prevented from being blasted, and therefore safe landing of the airborne occupant is effectively ensured.

The invention provides a secondary collision prevention system, a vehicle comprising the same, a corresponding secondary collision prevention method and a computer readable storage medium. The secondary collision prevention system comprises a pre-primary-collision motion trajectory prediction unit configured to predict motion trajectories of other two traffic participants, a primary collision occurrence judgment unit configured to predict whether primary collision occurs or not, an after-primary-collision motion trajectory prediction unit configured to predict motion trajectories of the othertwo traffic participants after the occurrence of the primary collision, a current vehicle motion trajectory prediction unit configured to predict a motion trajectory of the current vehicle, a secondary collision occurrence judgment unit configured to judge whether secondary collision between at least one of the other two traffic participants and the current vehicle occurs or not, and a secondary collision prevention unit configured to initiate secondary collision prevention if a secondary collision occurs. By means of the system, secondary collision can be prevented, and therefore the drivingsafety is improved.

The invention discloses an automatic protective device of an optoelectronic device. The automatic protective device comprises a box, a base plate is arranged at the bottom of the box, a plurality of insertion rods are fixedly connected to the top of the base plate, connecting grooves corresponding to the insertion rods are formed in the bottom of the box, the insertion rods are in sliding connection with the inner side wall of the connecting grooves, the insertion rods are sleeved with first springs, the two ends of the first springs are connected with the box and the base plate, the top of the base plate is fixedly connected with a joining rod, a control block is fixedly connected to the top of the joining rod, and the side wall of the box is provided with a first sliding groove corresponding to the control block. According to the automatic protective device, the base plate extrudes the first springs to protect the box, in addition, the base plate supports a side plate open through asupporting rod by means of cooperation of the joining rod and the control block, secondary collision caused after box falling is avoided, the self-protection function is achieved, box damage is avoided, and use by people is facilitated.

The invention discloses a seat device for protecting the safety of a passenger in a bus rollover accident. The seat device comprises a frame, a first telescopic rod, a spring, a crank, a food stand, a second telescopic rod and a locking device. An upper rod of the second telescopic rod is movably connected with the other end of the frame, a lower end of the second telescopic rod is fixedly connected with a base plate of a compartment, and the upper rod is movably inserted into the lower rod in a connected mode. The locking device is arranged on the lower rod. The crank is fixedly connected with one end of the first telescopic rod. One end, fixedly connected with the crank, of the first telescopic rod is movably connected with the middle of the foot stand, one end of the spring is connected with the middle of the crank, and the other end of the spring is connected with a transverse rod arranged at the upper end of the foot stand. The locking device comprises a hinge pin, a servo motor and a control system. A gyroscope and an acceleration sensor of the control system are respectively connected with an STM32F407 electronic control unit. One end of the hinge pin is connected with the servo motor, and the other end of the hinge pin is inserted into the upper rod and the lower rod in a telescopic mode. The seat device can effectively avoid second-time collision in the bus rollover accident, and the passenger protection capacity of a bus is greatly improved.

The invention discloses a traction device convenient for a trailer, which relates to the field of mobile traction devices for trailers. The trailer traction device comprises a traction fixing frame, atelescopic frame, a front cross beam piece, a traction piece rotating seat, a traction fixing piece, a rotating driving piece and an anti-collision buffer piece, and has the beneficial technical effects that a certain safety distance can be generated between the trailer traction device and a trailer body during traction, and the traction fixing piece can be automatically driven to be unfolded towards the outer end. The number of the traction fixing frames is two. The two ends of a telescopic frame are connected with the two traction fixing frames in a matched mode. The front end of the telescopic frame is connected to a front cross beam piece in a matched mode. The traction piece rotating seat is movably connected to the front cross beam piece; the traction fixing piece is connected to the traction piece rotating seat in a matched mode, one ends of the two rotating driving pieces are arranged on the two traction fixing frames respectively, the other ends of the two rotating driving pieces are movably connected with the two ends of the traction piece rotating seat respectively, and the two anti-collision buffer pieces are symmetrically arranged at the lower end of the traction piece rotating seat.