Based On The NRF9E5 Temperature Ceramic Kilns Detection System Design

This Paper put forwards the design thought and implementation procedure of the ceramic kiln short distance wireless measuring system of temperature based on the thermocouple sensor and the single chip radio transceiver nRF9E5. With embedded MCU 51 kernel of RF transceiver chip nRF9E5 as the core of the system, it adopts thermocouple sensor, applies sensing technology, wireless receive and transmit technology and computer technology, implements the acquisition of temperature data and transmittes them in short distance wirelessly.The ceramic kiln wireless temperature measuring systems based on thermocouple sensor and nRF9E5 is formed by two major parts mainly: first part is the data acquisition of the system, with a radio transceiver nRF9E5 chip as the core, makes up temperature acquisition system with thermocouple, complete the acquisition of temperature data and transmit them wirelessly. Second part is the data receiver of the system, with a radio transceiver nRF9E5 chip, through interface module RS-232, achieves the wireless receiving, and uploading function of temperature data.The single chip radio transceiver nRF9E5 is adopted for temperature data wireless transmission which made from Nordic VLSI Company of Norway. Regard nRF905 chip as the core, nRF9E5 is integrated with RF receiving and transmission, enhancement 8051 kernel, 4 input 10bit ADC, SPI, PWM, all among in the single chip, few peripheral circuit, the high-frequency components are all integrated within the chip, performance is steady and can not interfered by the external electromagnetic interfere. Compared with Bluetooth, nRF9E5 have no complicated communication protocol, totally transparent to users, the same kind of product can free communication, and all working parameter can set up finishing through the software. Integrated 51 enhanced kernels within nRF9E5, need not dispose the MCU alone, has already simplified the design of circuit, improve systematic anti-interference ability, so, nRF9E5 is the low cost RF system chip with small volume, lower consumption, few external components.This paper introduces the working principle of temperature sensor and radio transceiver chip, then expounds the hardware circuit structure and the software designing of relevant functions of the system in detail. The framework of system is simple, the performance is good, and the data transmission speed is fast, so it is suitable for wireless measuring of temperature in many application regions.