| 摘要 |
PURPOSE:To permit inexpensive manufacturing and more stable control by a methode wherein an elastic insulating material is used for a pressurized electric conductive element and the conduction of a heater is controlled by detecting loading or non-loading of a human body by the voltage change of an electricity connected to the insulating material. CONSTITUTION:The titled device is provided with the elastic insulant 3d instead of a pressurized conductive sheet. A first electrode 3a is in the GND potential of the circuit and a second electrode 3b is impressed by D.C. voltage through a resistor 38. In case of the unloading of a human body, the first electrode 3a and the second electrode 3b are in an open condition, therefore, no current is present in the resistor. A high signal is outputted in an output. In case of the loading of the human body, the first electrode 3a and the second electrode 3b become short condition due to increase a pressure, therefore the current is present in the resistor 38 and Low signal is outputted in the output 30. As the device detects the loading of the human body in accordance with the existence of the current in the resistor 38 and the change of the electrode voltage, the stable control may be obtained. |
