摘要:
A wiper control apparatus is provided which detects a visibility state of a window of a moving body and controls a wiper to a target visibility state with less erroneous operation and in a short time. The wiper control apparatus provided in a vehicle and for controlling the wiper operating on the window of the vehicle includes a wiper position detection unit to detect a position of the wiper on the window of the vehicle, a recognition rate calculation unit to calculate a recognition rate of an image taken by an imaging device when the position of the wiper detected by the wiper position detection unit is a previously determined position, a target recognition rate setting unit to set a target recognition rate from the calculated recognition rate, a comparison unit to compare the recognition rate with the target recognition rate and to output a comparison result, and a wiper operation speed determination unit to determine an operation speed of the wiper based on the comparison result.
摘要:
A small, light and low-cost on-vehicle radar which reduces noise caused by a road surface, own car and radar itself, prevents road clutter and improves detection performance is provided. The on-vehicle radar includes an antenna having one or a plurality of radiation elements which radiate linearly polarized waves, a slit plate provided with a plurality of slits on a metal plate disposed in front of this antenna surface and a foamed material provided between the antenna and slit plate. Side lobes whose principal component is a cross polarized wave from a feeder line of the antenna can be reduced and road clutter can be prevented. Resonance of slits whose characteristic frequency becomes equal to or smaller than the frequency of vehicle can be reduced and noise can be suppressed. Therefore, it is possible to obtain excellent detection performance as the radar apparatus.
摘要:
An object of the present invention is to provide a millimeter wave radar device and module that provides a hollow structure while assuring adequate moisture resistance. A multilayer substrate on which at least one millimeter wave MMIC is mounted and a cap for forming a hollow around the MMIC are joined together with an adhesive or other similar organic member to obtain a high-frequency characteristic. The resulting assembly is housed in a case and covered with a moisture resistance by a gelled organic resin. The nonairtight structure obtained in this manner permits the use of low-cost members and provides increased productivity.
摘要:
In a suspension device including a radar sensor installed in the suspension for detecting the behavior of the suspension, high pressure is applied to the radar sensor and measurement errors tend to be caused by changes in the flow, temperature and pressure of oil around the sensor. In order to realize precise measurement even in the oil environment, a radio wave radar sensor (especially, a millimeter wave radar sensor) is employed as the radar sensor, and the radio wave radar sensor is mounted in a ceramic package, by which the precise detection of the suspension behavior in the oil environment withstanding high pressure is realized.
摘要:
A high frequency transmitter-receiver which can prevent an antenna pattern from being broken. A radar apparatus is provided with a high frequency antenna, a base plate and a module. The antenna is comprised of an organic substrate and a metal pattern formed on the organic substrate. The high frequency antenna is adhered to the base plate astride the module. Here, the gap between the base plate and the module where the antenna is adhered is configured to satisfy the expression (an amount of change in gap size with respect to a change in use temperature)÷(an original gap size)≦6%.
摘要:
An object of the present invention is to provide a millimeter wave radar device and module that provides a hollow structure while assuring adequate moisture resistance.A multilayer substrate on which at least one millimeter wave MMIC is mounted and a cap for forming a hollow around the MMIC are joined together with an adhesive or other similar organic member to obtain a high-frequency characteristic. The resulting assembly is housed in a case and covered with a moisture resistance by a gelled organic resin. The nonairtight structure obtained in this manner permits the use of low-cost members and provides increased productivity.
摘要:
In a radar device, in order to make it simple to attach a connector to a housing and connect a control circuit board to an antenna module, to make it possible to automate assembly, and to achieve downsizing and weight reduction, the radar device comprises a resin housing having upper and lower opening portions, and a control circuit board attached to the resin housing, a metal front cover and a metal rear cover are arranged so as to close the upper and lower opening portions of the resin housing, an opening portion is formed in the metal front cover, and an antenna module is arranged in the opening portion so as to be firmly attached, whereby the radar device can be assembled from one side, it is possible to improve efficiency of assembling work and it is possible to achieve downsizing and cost reduction of the radar device.
摘要:
In a high-frequency circuit having a substrate having a high-frequency transmission line and an dielectric resonator formed on said substrate so that said dielectric resonator and said high-frequency transmission line may be coupled electro-magnetically to each other, a hole part or a cavity part is formed at a part of said substrate and a dielectric resonator is embedded in said hole part or said cavity part. In the same object, a high-frequency circuit having a dielectric resonator is produced by the step for forming a high-frequency transmission line on a substrate, the step for forming a hole part or a cavity part on a part of the substrate, and the step for mounting a dielectric resonator in the hole par formed on the surface of the substrate.
摘要:
In a high-frequency circuit having a substrate having a high-frequency transmission line and an dielectric resonator formed on said substrate so that said dielectric resonator and said high-frequency transmission line may be coupled electro-magnetically to each other, a hole part or a cavity part is formed at a part of said substrate and a dielectric resonator is embedded in said hole part or said cavity part. In the same object, a high-frequency circuit having a dielectric resonator is produced by the step for forming a high-frequency transmission line on a substrate, the step for forming a hole part or a cavity part on a part of the substrate, and the step for mounting a dielectric resonator in the hole par formed on the surface of the substrate.
摘要:
An object of the present invention is to provide a millimeter wave radar device and module that provides a hollow structure while assuring adequate moisture resistance.A multilayer substrate on which at least one millimeter wave MMIC is mounted and a cap for forming a hollow around the MMIC are joined together with an adhesive or other similar organic member to obtain a high-frequency characteristic. The resulting assembly is housed in a case and covered with a moisture resistance by a gelled organic resin. The nonairtight structure obtained in this manner permits the use of low-cost members and provides increased productivity.