| 摘要 |
PURPOSE: A non-contact seat sensor structure using the deviation of antenna resonant frequency is provided to sense a wide range, and to prevent a sensing error when a sensor is stained with foreign materials and water. CONSTITUTION: A non-contact seat sensor structure using the deviation of antenna resonant frequency comprises a main body, an antenna(120), a circuit(130), an amplifier(140), a converter(150), and a controller(160). The main body is installed around a hot-water washer and an electric toilet seat. The antenna is installed in the main body, and senses the access of a human body. The power from the main body is supplied to the circuit, and the circuit generates standard frequency. And the circuit detects the deviation of the standard frequency and the frequency sensed from the antenna. The amplifier amplifies the detected frequency deviation. The converter changes the frequency to a certain voltage value and level by analyzing the amplified frequency deviation. The controller receives a signal from the converter, and controls the hot-water washer and the electric toilet seat. |
