While TV brings joy to people, it also brings confusion and troubles to students and parents. Due to poor self-control ability of students, they watch TV without restraint, which affects their studies, vision and health, and parents suffer from the inability to control. In this case, a TV timing control device called \"TV startup time intelligent controller\" came into being. The TV startup time intelligent controller is an electronic product that can plan children to watch TV to prevent them from watching TV without restraint, protect their eyesight, resist and prevent the erosion of TV diseases, so as not to affect their studies. The product has beautiful appearance, easy installation and use. Functional features: Directly turn on/off the TV power supply, turn on the power supply on time, turn on the power supply within a specified time, and can freely control the limited time. Approach the TV and automatically turn off the power supply within the distance that affects vision. The TV plug is locked in the password plug, and others cannot disassemble it. 1. The principle of the TV startup time intelligent controller The TV startup time intelligent controller has the appearance shown in the figure. The device is mainly composed of a host, a remote control and a special screw cutter. The front panel has an infrared remote control signal receiving window, a start-stop timing switch and eight light-emitting diodes that indicate the setting status. The main principle of TV intelligent vision protection is to lock the plug of the TV, set the TV startup time intelligent controller host through the remote control, implement timed startup and timed shutdown, and intelligently supply power to the TV at a timely manner, thereby realizing the control of the TV. The TV startup time intelligent controller is mainly composed of a microprocessor, a power supply circuit and an actuator. Its working process is as follows: After the 220V mains power is stepped down by the transformer, one group is rectified and filtered by bridge type to obtain 12V DC power for the actuator and buzzer; the other group is rectified and filtered by bridge type to output 4.5V DC power to provide working voltage for the microprocessor. In order to prevent the loss of setting information due to power failure, two No. 5 batteries need to be installed in the battery compartment below the TV startup time intelligent controller. When the power is off, the battery supplies power to the microprocessor, so that the setting information in the microprocessor will not be lost due to power failure. The actuator is composed of transistor Q2 and relay J, which is controlled by the microprocessor and cuts off or connects the AC power according to the setting requirements. The TV power-on time intelligent controller is set through the remote control. When the button of the remote control is pressed, the buzzer will sound a prompt to confirm that the TV power-on time intelligent controller has received the remote control command. 2. Use of the TV power-on time intelligent controller The operation of the TV power-on time intelligent controller is very simple. When using it, first use a special screwdriver to loosen the two special screws on the bottom of the TV power-on time intelligent controller host, open the lower cover, insert the TV power cord plug into the socket inside the TV power-on time intelligent controller, open the battery compartment, install two No. 5 batteries, tighten the two special screws on the lower cover, and set the host with the remote control according to the instructions. Because the setting method of the host is different, its control function is also different. The specific control function setting method is as follows:
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