Xiangdong LI,Jian YUAN,Lang QIN,Wanli TONG,Zhaotao GONG
申请号：
US13447322
公开号：
US20120203084A1
申请日:
2012.04.16
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A positioning system, an apparatus, and a method for wireless monitoring of esophageal pH value. The positioning system includes an internal transmitting apparatus and an external recording apparatus. The external recording apparatus includes a second element, and the second element of the external recording apparatus cooperates with a first element of the internal transmitting apparatus. If the external recording apparatus detects that the internal transmitting apparatus is not located in the preset region, alerting action is conducted under the control of a micro-processor. The external recording apparatus periodically detects the intensity of a signal received by a second wireless transceiver module, under the control of the micro-processor, and if the signal intensity is not within the preset range, the alerting action is conducted under the control of the micro-processor.
