溫度采集控制系統(tǒng)


溫度采集控制系統(tǒng)

摘要  介紹了一種新型數字溫度傳感器DS18B20,并用DS18B20和AT89C52單片機研制了一種溫度采集控制系統(tǒng)。溫度采集控制系統(tǒng)使用DS18B20采集溫度，并將溫度通過單線總線傳給AT89C52單片機。AT89C52單片機一方面通過串行輸入輸出口與PC機進行通信，遠程控制溫度；一方面通過TEC9988芯片將溫度、出錯信息等轉換成能夠在數碼管上顯示的信息；一方面將從DS18B20讀取的溫度與有效溫度最高值和最低值進行比較，若超過有效溫度范圍則啟動報警系統(tǒng)，否則繼續(xù)從DS18B20讀取溫度。本系統(tǒng)根據需要設置有效溫度范圍，并通過報警提醒PC機調整溫度高低,實現溫度控制。該系統(tǒng)具有實用性強、可靠性高等特點。

關鍵詞  DS18B20 AT89C52單片機 溫度采集控制 單線總線 串行輸入輸出 TEC9988 有效溫度范圍 報警

Title     Temperature Gather Control System                 

Abstract Have introduced a kind of new-type digital temperature sensor DS18B20, and develop a kind of temperature gather control system with DS18B20 and AT89C52 one-chip computer. Temperature gather control system use DS18B20 to gather temperature, and transmit it to AT89C52 one-chip computer through the single-track bus. AT89C52 one-chip computer communicates with computer through serial import and export ports, controlling temperature long rangy. It changes the temperature, mistakes information, etc to be can in message that show on number in charge of through TEC9988 chip. Comparing the temperature that gathering from DS18B20 with supreme value and the minimum value of effective temperature. if the temperature exceed effective temperature range, starting warning system, else read temperature from DS18B20 to continue. This system set up effective temperature range according to need, and remind the PC of adjusting the height of temperature through the warning system, realizing temperature control. This system has practicability strong, high characteristic of dependability.

Keywords  DS18B20
AT89C52 one-chip computer
Temperature gather control
Single-track bus
Serial import and export ports
Tec9988
Effective temperature range
Warning