A special grip sensor for an electric iron

Abstract

The invention discloses a handheld inductive sensor special for an electric iron. The sensor comprises a capacitance integral input module and a capacitance detecting unit, wherein the capacitance integral input module is formed by a signal generation electrode, a signal reception electrode, a switch sw1 and a switch sw2; the signal generation electrode is connected with the switch sw1 and the switch sw2 so as to be used for generating a pulse signal; the signal reception electrode is connected with the capacitance detecting unit through the switch sw1 and the switch sw2; the capacitance detecting unit is formed by a signal integral module, an analog-digital conversion module and a negative integral input module; the output end of the negative integral input module is connected with the input end of the signal integral module; the output end of the signal integral module is connected with the input end of the analog-digital conversion module; the output end of the analog-digital conversion module is connected with the input end of the negative integral input module. The handheld inductive sensor special for the electric iron has the characteristics of simplicity and convenience in implantation, low cost, good holding hand feeling and the like, solves the safety problem caused by the reason that the electric iron is not vertically placed in the use clearance.

Description

technical field [0001] The invention relates to a sensor for an electric iron, in particular to a grip proximity sensor implantable in the handle of the electric iron. After the sensor is implanted in the electric iron, it can greatly improve the safety of the electric iron. Background technique [0002] An electric iron is a common tool for flattening clothes and fabrics, and is one of the essential household appliances in modern times. Different fabrics require different temperatures for electric irons. Early electric irons artificially controlled the power-on time to increase the temperature of the soleplate of the iron, but in fact it was not easy to achieve, because the temperature could easily exceed the resistance of the fabric to be ironed. range, resulting in cloth damage or even carbonization and burning. The improved temperature-regulating electric iron adds a temperature control device on the basis of the ordinary type. The temperature control element uses a bi...

AI Technical Summary

Problems solved by technology

[0003] Of course, temperature-regulating electric irons also have potential safety hazards. For example, the bimetal in the temperature control device will lose its elasticity after being pressed for a long time, that is, the temperature-regulating function will be lost, or long-term high-power output will cause the bimetal to contact with the iron. Elastomers are fused together by electric shock, which will cause safety problems for electric irons

In addition, during use, users may forget to cut off the power or place the electric iron flat for a long time, resulting in the accumulation of heat and increasing the probability of danger

[0004] In response to these safety issues, some electric irons have added an electric iron attitude detection device. For example, the design of automatically shutting down when placed in an upright state for a period of time has been widely used. The electric iron stops moving for one minute and the power is turned off. Similar designs are used in To a certain extent, the safety of the electric iron has been improved, but it is not perfect. For example, if the electric iron is placed horizontally for 30 seconds, it is enough to cause some fabrics to be scalded by the high temperature accumulated by the electric iron. These safety hazards are prompting us develop better designs

Images