Abstract: Provided is an automatic faucet using a radio wave sensor, which is capable of preventing erroneous stop of water spouting, with a simple configuration. The automatic faucet (1) has a radio wave propagation space, a radio wave emitting port (27), and directivity setting device. The directivity setting device is configured to direct a radio wave being emitted from the radio wave emitting port (27), in such a manner that, during a water stopping state, the emitted radio wave lies along a spouting direction (A) along which washing water is to be spouted from a spout port (26), and, during a water spouting state, a part of the radio wave emitted disposed offset in a direction C, with respect to the spout port (26) interferes with a region of a peripheral surface of a stream (W) facing in the direction C.

Abstract: A urinal includes: a urinal body; a high-frequency sensor which radiates a radio beam obliquely passing through an upper surface of the urinal body toward a bowl and receives a reflected wave from an object so as to generate a detection signal; and a valve which discharges or stops flushing water to the urinal body in response to the detection signal. An angle formed between a first plane including the upper surface of the urinal body and a second plane including a radiation surface of an antenna of the high-frequency sensor is in a range of more than 0 degree to less than 90 degree. A cross line where the first plane and the second plane intersect with each other is substantially parallel to a horizontal direction of the urinal body. The radio beam is a linearly-polarized wave. An excitation direction of the radio beam intersects with the cross line. An intensity of the radio beam passing through the urinal body is larger than that of the radio beam reflected by the upper surface.

Abstract: There is provided a water discharge system. A water discharge system includes a water discharge portion; a sensor unit which acquires movement information about an object based on a radiated electric wave, and outputs a detecting signal; and a control unit which controls water discharge of the water discharge portion based on the detecting signal. When it is detected that the object is decelerated to a first threshold velocity or less, the control unit controls the water discharge portion to start the water discharge.

Abstract: A plurality of antenna electrodes 11, 12, 13, 14 on a substrate 1 can be connected to a ground electrode on the substrate 1 via connectors at spots 11A-11C, 12A-12C, 13A-13C, and 14A-14C. Each connector can be opened/closed by a switch; or provided with a impedance varying device. Any one of the antenna electrodes may be connected to the ground electrode by the switch or the impedance varying device. The radio wave beam outputted from this antenna electrode shifts in phase from the radio wave beams outputted from the other antenna electrodes, whereby the direction of the integrated radio wave beam is inclined. Connecting one or another of the spots 11A-11C, 12A-12C, 13A-13C, and 14A-14C to the ground electrode changes the direction and the magnitude of the integrated radio wave beam.

Abstract: A water discharge system capable of preventing a mistaken detection to surely perform the stop of water discharge or continue the start of water discharge is provided. The water discharge system includes: a water discharge unit; a sensor unit configured to obtain information about an object to be detected through a reflected wave of a radiated radio wave; a control unit configured to control the start of water discharge from the water discharge unit based on a detective signal from the sensor unit; and a storage mechanics.

Abstract: A microstrip antenna has feed element 102 and parasitic elements 104, 106 on the front surface of substrate 1. Microwave electrical power is applied to feed element 102. Parasitic elements 104, 106 are connected via through hole type leads passing through substrate 1, to switches upon the rear surface of substrate 1, respectively. By actuating the switches individually, parasitic elements 104, 106 are individually switched between a grounded state and a float state. The direction of the radio beam emitted from the microstrip antenna is varied by selecting which of parasitic elements 104, 106 is grounded and floated. A microwave signal source connects to feed element 102 via an feed line 108 very much shorter than the wavelength, accordingly the transmission losses being low and the efficiency being excellent.

Abstract: A urinal includes: a urinal body; a high-frequency sensor which radiates a radio beam obliquely passing through an upper surface of the urinal body toward a bowl and receives a reflected wave from an object so as to generate a detection signal; and a valve which discharges or stops flushing water to the urinal body in response to the detection signal. An angle formed between a first plane including the upper surface of the urinal body and a second plane including a radiation surface of an antenna of the high-frequency sensor is in a range of more than 0 degree to less than 90 degree. A cross line where the first plane and the second plane intersect with each other is substantially parallel to a horizontal direction of the urinal body. The radio beam is a linearly-polarized wave. An excitation direction of the radio beam intersects with the cross line. An intensity of the radio beam passing through the urinal body is larger than that of the radio beam reflected by the upper surface.

Abstract: There is provided a water discharge system. A water discharge system includes a water discharge portion; a sensor unit which acquires movement information about an object based on a radiated electric wave, and outputs a detecting signal; and a control unit which controls water discharge of the water discharge portion based on the detecting signal. When it is detected that the object is decelerated to a first threshold velocity or less, the control unit controls the water discharge portion to start the water discharge.

Abstract: A microstrip antenna has feed element 102 and parasitic elements 104, 106 on the front surface of substrate 1. Microwave electrical power is applied to feed element 102. Parasitic elements 104, 106 are connected via through hole type leads passing through substrate 1, to switches upon the rear surface of substrate 1, respectively. By actuating the switches individually, parasitic elements 104, 106 are individually switched between a grounded state and a float state. The direction of the radio beam emitted from the microstrip antenna is varied by selecting which of parasitic elements 104, 106 is grounded and floated. A microwave signal source connects to feed element 102 via an feed line 108 very much shorter than the wavelength, accordingly the transmission losses being low and the efficiency being excellent.

Abstract: A plurality of antenna electrodes 11, 12, 13, 14 on a substrate 1 can be connected to a ground electrode on the substrate 1 via connectors at spots 11A-11C, 12A-12C, 13A-13C, and 14A-14C. Each connector can be opened/closed by a switch; or provided with a impedance varying device. Any one of the antenna electrodes may be connected to the ground electrode by the switch or the impedance varying device. The radio wave beam outputted from this antenna electrode shifts in phase from the radio wave beams outputted from the other antenna electrodes, whereby the direction of the integrated radio wave beam is inclined. Connecting one or another of the spots 11A-11C, 12A-12C, 13A-13C, and 14A-14C to the ground electrode changes the direction and the magnitude of the integrated radio wave beam.