Briefly describe the requirements for selecting Christmas light controller

Christmas is not only the festival of the birth of Jesus, but also a secular festival generally celebrated. At the end of the Christmas festival every year, many countries around the world will feel the flavor of Christmas. The key corner of Christmas decoration decorating cities, homes and stores is the intelligent controller of various colorful Christmas lights, LED Christmas lights. Its characteristics are that it includes Christmas light driving power supply, H-bridge circuit, light mode controller, Bluetooth module, manual button and Bluetooth module, The Christmas lamp driving power supply described by the Christmas lamp manufacturer is connected to the H-bridge circuit; The output end of the light mode controller is connected with the input end of the H-bridge circuit; The input end of the light mode controller is respectively connected with the Bluetooth module and the manual button; The output end of the H-bridge circuit is connected with two channels, and the Bluetooth module is wirelessly connected with the Bluetooth module of the mobile phone.

1.The intelligent controller according to claim 1, which is characterized in that the H-bridge circuit is composed of four switching triodes. The model of the triode: the upper tube is PNP type triode m8550, and the lower tube is NPN type triode m8050.

2. The intelligent controller according to claim 1, which is characterized in that the Christmas lamp driving power supply comprises a series connected rectifier circuit and a DC-DC conversion circuit.

3. The intelligent controller according to claim 1, which is characterized in that the Bluetooth module comprises a serial signal processing module and a control circuit, and the signal processing circuit converts the wireless signal obtained from the mobile phone into an electrical signal; The control circuit converts the electrical signal into a level pulse signal.

At present, the LED Christmas lights with digital control produced in the market are used to control the conversion of the lighting mode of the lights by means of buttons. The lighting modes of the lights include: single-way fast flashing, double-way fast flashing, single-way fading, double-way fading, single-way constant lighting, double-way constant lighting and various lighting combination cycle modes, etc. The Christmas lamp manufacturer said that if it is a button control mode, it must press the button on the drive power shell to change the lighting mode, which is very inconvenient and not suitable for the modern fast-paced lifestyle.