摘要:
A shock detection optical fiber sensor includes: a plastic fiber; a corrugated plate having a plurality of protrusions arranged in the longitudinal direction of the plastic optical fiber and formed to oppose to the plastic optical fiber; a mold plate covering the plastic optical fiber and the corrugated plate; a light emitting element connected to one end of the plastic optical fiber; and a light receiving element connected to the other end of the plastic optical fiber.
摘要:
A radar device has a plurality of receiving antennas which receive, as a reception wave, a radar wave sent in a predetermined reference direction and reflected by a target; a phase difference detection unit which detects a first phase difference of the reception wave received by a first receiving antenna pair that is spaced by a first gap, and a second phase difference of the reception wave received by a second receiving antenna pair that is spaced by a second gap smaller than the first gap; and an angle detection unit which performs a first process of determining, as a detection angle, an angle of the target relative to the reference direction being a mutually coincident angle from among a plurality of first angles corresponding to the first phase difference and a plurality of second angles corresponding to the second phase difference. The radar device allows expanding an angle detection range without reducing the resolution of the angle corresponding to the second phase difference.
摘要:
A colliding object determination device for a vehicle having a bumper reinforcement member (12) includes a sensor (20) and a determination circuit (40). The sensor (20) is located in a front portion of a vehicle for measuring a collision state quantity correlating with a collision load generated in a collision of a colliding body with the vehicle. The determination circuit (40) determines whether the colliding body is a pedestrian based on the measured collision state quantity. The sensor (20) is located on an upper half region of a front end face of the bumper reinforcement member (12). Thus, accuracy of discriminating the pedestrian from other objects can be improved.
摘要:
A load detecting sensor includes a first member, a second member, and an optical fiber. The first member has a groove having a bottom portion and a column portion which defines the groove. The second member covers the groove of the first member so that a surrounded space is formed. The optical fiber is arranged in the surrounded space. At least one of the first member and the second member is made of an elastic body. The surrounded space is deformable when load is applied to at least one of the first and the second members. When load is applied to at least one of the first and the second members, the deformation of the optical fiber is caused following the deformation of the surrounded space. Hereby, the load detecting sensor, which can decrease the manufacturing cost and increase the detecting sensitivity by the optical fiber, can be obtained.
摘要:
In a passenger protection device, an object detection unit detects a relative position of an object in a circumference of a vehicle to the vehicle. A side collision prediction unit predicts that the object is about to collide with a side face of the vehicle, based on the relative position detected by the object detection unit. An impact detection unit detects an impact of the object on the vehicle side face. A side collision judgment unit determines whether the object has collided with the vehicle side face, based on the impact detected by the impact detection unit. A passenger protection unit protects a passenger in the vehicle. When the side collision prediction unit predicts that the object is about to collide with the vehicle side face and the side collision judgment unit determines that the object has collided with the vehicle side face, the passenger protection unit is initiated.
摘要:
A colliding object determination device for a vehicle having a bumper reinforcement member (12) includes a sensor (20) and a determination circuit (40). The sensor (20) is located in a front portion of a vehicle for measuring a collision state quantity correlating with a collision load generated in a collision of a colliding body with the vehicle. The determination circuit (40) determines whether the colliding body is a pedestrian based on the measured collision state quantity. The sensor (20) is located on an upper half region of a front end face of the bumper reinforcement member (12). Thus, accuracy of discriminating the pedestrian from other objects can be improved.
摘要:
A vehicular data recording apparatus includes crash detection means (12) for detecting a crash of a vehicle, and recording process means (14) for recording and retaining output data of various vehicle-mounted sensors (20, 30, 40, 50) mounted in the vehicle, in a non-volatile memory (70), wherein if a crash is detected by the crash detection means (12), a data recording/retaining process relevant to the crash is performed by the recording process means. If a plurality of crashes different in the crash form are detected continually in a short time by the crash detection means, the recording process means performs the data recording/retaining process relevant to each crash in accordance with a predetermined order of priority based on the crash form of each crash.
摘要:
An optical fiber sensor can be interposed between a bumper reinforcement and a load transmitting plate to extend in the direction of width of a vehicle along with the bumper reinforcement. In this case, when a change does not occur substantially in an immediately previous predetermined period in an output voltage of a light emission amount of the optical fiber sensor, a feedback control is performed in such a way that the change becomes a level of zero of the output voltage of the optical fiber sensor. In contrast, when a change in the output voltage is not substantially zero, the immediately previous state of emission of light is maintained. Accordingly, it is possible to effectively compensate a zero point shift caused by a temperature change or/and an aging degradation of the optical fiber sensor.
摘要:
A collision detection device is provided with a load detection member 2 for detecting a collision load in a collision, and a mold member 3 which is molded to be integral with the load detection member 2. The mold member 3 covers at least the surface of a collision side of the load detection member 2, to absorb at least a part of impact energy in the collision by a resilient deformation of the mold member 3. Thus, the collision detection device is substantially resistant to an impact in the collision, while being simply manufactured.
摘要:
An optical fiber sensor in which the insertion efficiency of a plastic fiber is improved, the potential danger of rupture of a mold member is decreased, the operation of the sensor in a low load area and the linearity of output of the sensor are improved. Plastic fiber for detection is inserted in insertion hole of molded member, and filler is filled in a gap between the plastic fiber for detection and the molded member.