JPS62156703U

JPS62156703U -

Info

Publication number: JPS62156703U
Application number: JP4532486U
Authority: JP
Priority date: 1986-03-27
Filing date: 1986-03-27
Publication date: 1987-10-05

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る近接センサの
静電容量検出部に用いる暖房器具の前面ガードと
キヤビネツトをコンデンサとした場合の等価図、
第２図は上記実施例において検出物体が前面ガー
ドに近接した場合の状態を示す等価図、第３図は
上記実施例に係る暖房器具における近接センサの
ブロツク図、第４図は上記ブロツク図において検
出物体が前面ガードに近接した場合の各ブロツク
の出力信号波形図、第５図は本考案の他の実施例
に係る暖房器具における近接センサのブロツク図
、第６図は上記ブロツク図において検出物体が前
面ガードに接近した場合の各ブロツクの出力信号
波形図、第７図は上記ブロツク図において周囲の
環境等に変化があつた場合の各ブロツクの出力信
号波形図である。（符号の説明）、１……キヤビネツト、２……
前面ガード、４……検出物体、Ｃ_１……暖房器具
固有の静電容量、Ｃ_２……検出物体とキヤビネツ
トとの間における固有の静電容量、Ｘ，Ｘ′……
近接センサ、Ｙ……静電容量検出部、Ｚ，Ｚ′…
…制御部。 FIG. 1 is an equivalent diagram when the front guard and cabinet of a heating appliance used in the capacitance detection section of a proximity sensor according to an embodiment of the present invention are used as capacitors.
Fig. 2 is an equivalent diagram showing the state when a detection object approaches the front guard in the above embodiment, Fig. 3 is a block diagram of the proximity sensor in the heating appliance according to the above embodiment, and Fig. 4 is a block diagram of the above block diagram. Figure 5 is a block diagram of the proximity sensor in a heating appliance according to another embodiment of the present invention, and Figure 6 is a diagram of the output signal waveforms of each block when a detected object approaches the front guard. FIG. 7 is an output signal waveform diagram of each block when the robot approaches the front guard, and FIG. 7 is an output signal waveform diagram of each block when there is a change in the surrounding environment in the above block diagram. (Explanation of symbols), 1...cabinet, 2...
Front guard, 4... Sensing object, C ₁ ... Capacitance specific to the heating appliance, C ₂ ... Specific capacitance between the detection object and the cabinet, X, X'...
Proximity sensor, Y...Capacitance detection section, Z, Z'...
...control section.

Claims

[Scope of Claim for Utility Model Registration] (1) A capacitance detection section consisting of a heating appliance cabinet and a front guard insulated from the cabinet, and a device that responds to changes in capacitance from the capacitance detection section. 1. A proximity sensor for a heating appliance, comprising: a control unit that inputs a signal to determine whether an object is close to the front guard based on the presence or absence of a change in capacitance. (2) The heating appliance according to claim 1 of the utility model registration claim, in which the control unit determines that the detected object has approached when the capacitance change in the capacitance detection unit is more rapid than a predetermined amount. sensor in.