We have finished the low-level control system of data acquisition, which has been used to control temperature by vacuum group. The whole temperature control system is introduced before WDM device driver for Pci9112 is described.The following is sketch map of the whole control system. We have finished the low-level control system of data acquisition, which has been used to control the temperature by vacuum group. The whole temperature control system is introduced before the WDM device driver for PCI9112 is described. The following is a sketch map of the whole control system .