Multiple Usb Desktop Chargers / Usb Charger Station / Mobile Bluetooth Charger
In the socket field, the multi-function smart socket is a home information collecting device, which monitors the working state of the household appliance and uses the socket at the same time, and has network monitoring capability. This article focuses on the USB implementation of the socket to communicate with the host computer.
Existing sockets have shown a variety of trends in terms of their use, function and shape characteristics. Some have added insurance functions, power indication functions, and switch functions, and some have added voltage regulation functions. In any case, the functions of these sockets can only be used for a single purpose: to provide a power interface for powered devices. Their common shortcoming is that they do not have information and intelligence. In order to realize the informationization and intelligence of the socket, we will study the intelligent information system designed and integrated with the socket, and integrate the smart device with the power socket to design a multifunctional intelligent monitoring socket. The socket is fixed once in the electrical installation of the building, and is powered by the lighting power source. When people use it, it is like using a normal power socket, which eliminates too many cables.
2. System function and composition
2.1 function
The multifunctional intelligent monitoring socket is based on the common socket, and the following functions are added in combination with the information:
1) Monitor the voltage, current and frequency of the electrical appliances connected to the outlet.
2) Monitor the working environment temperature of the socket.
3) Compare the operating voltage or current of the monitored appliance with its rated value. If the rated value is exceeded, the host sends a command to the execution unit to automatically cut off the power of the appliance and implement the protection function.
4) Communication function: The monitored information is transmitted to the host computer through the communication interface, and can be connected into a local area network within the home or industrial site. On the host side, people can periodically or irregularly query the working status of the electrical appliances connected to the outlet through a human-machine interface. If you want to achieve further convenience, you can connect the local area network to the Internet through the public telephone network, so that you can easily check the working status of the household appliances at any time outside the home by using a mobile phone or a PC.
The intelligent monitoring socket is composed of a power system, a monitoring system, a control system and a communication system. (1) Power system: complete the conversion of the lighting power supply to the DC stabilized power supply, and provide the working power to the intelligent system. It consists of isolated buck, rectification, filtering, voltage regulation and other circuits.
(2) Monitoring system: It consists of voltage sensor, current sensor and temperature sensor and analog/digital conversion circuit, which is responsible for information collection and processing.
(3) Control system: consists of a microprocessor (single chip) and an execution device. On one hand, the microcontroller controls the analog to digital conversion of the acquisition part; on the other hand, it accepts the command of the upper computer and then hands this command to the execution unit to complete, for example, cutting off the power supply of the appliance.