43results about How to "Prevent accidents such as fire" patented technology

The invention provides an electronic cigarette having a long-time heating protecting function and a protecting method thereof. The method comprises a first step of presetting smoking time T0; a second step of detecting smoking starting signals, if the smoking starting signals are detected, utilizing a timing controller to control a semiconductor switch to connect a heating unit with a power module, enabling the heating unit to start the heating, starting to perform timing, and entering a third step; or else continuing to monitor the smoking starting signals; the third step of judging whether timing time is smaller than the smoking time T0, if the timing time is smaller than the smoking time T0, executing a fourth step, or else utilizing the timing controller to control the semiconductor switch to disconnect the heating unit with the power module; the fourth step of detecting whether smoking stopping signals occur, if the smoking stopping signals occur, utilizing the timing controller to control the semiconductor switch to disconnect the heating unit with the power module; or else executing the third step. The problem that the electronic cigarette generates abnormal smells due to long-time heating is solved, and scalds and even accidents such as fires caused by a too high temperature can be avoided.

A fluidized drying bed comprises a fan heating device which comprises a fan, a first heater and a control circuit. The control circuit comprises a control end, an input end and an output end, the control end of the control circuit is connected with the fan, the input end of the control circuit is connected with a controller power source, and the output end of the control circuit is connected with the first heater; when the fan normally works, the control end of the control circuit is connected, and the first heater is connected to the controller power source and works; when the fan stops running, the control end of the control circuit is disconnected, and the first heater is disconnected with the controller power source and stops working. The fan and the heater are integrally controlled by the control circuit, namely when the fan trips due to faults or stops working due to other reasons, the control circuit controls the heater to stop, and fires and other accidents caused by too high heating temperature are avoided.

The invention discloses an intelligent automatic power-off socket which comprises a control circuit and a time-delay circuit. Electrical signals output from an infrared sensor in the control circuit are subjected to primary amplification and then subjected to three-level integrated operational amplification, and the control circuit controls on-off of a relay in the time-delay circuit according to the electrical signals subjected to the three-level integrated operational amplification. Due to the fact that the control circuit controls on-off of the relay and then controls on-off of a power source, the intelligent automatic power-off socket has the advantages of being sensitive, reliable and high in anti-interference performance; if the infrared sensor can not detect infrared radiation of a user body, the intelligent automatic power-off socket can carry out automatic power-off after the time-delay circuit delays for a while, and therefore the purposes of saving energy and preventing accidents like fire disasters can be achieved.