Enterprises already have a relatively complete set of sensor products. The set of products in the temperature, humidity, conductivity, pH, optical density, photoelectric, air humidity, magnetic field, and more than 10 kinds of sensors, sold to Eastern European countries, including russia. When used, these sensors are connected to a device called a host, which will be used to store the analog quantities of the sensor and send it to the PC terminal through the serial port. PC end with a set of software used in the software platform to demonstrate the effect of the sensor or the results of the experiment. Users require all sensors are independent of the USB interface, that is, each sensor can independently access the PC USB interface. The user is allowed to change the structure of the existing sensor, including the measurement method. PC end program requirements to achieve all the functions of the original software.