Realize GPS antenna detection circuitry based on ADC pressure differential method

The utility model provides a realize GPS antenna detection circuitry based on ADC pressure differential method, include: first resistance R1, first resistance R1's one end is connected, second resistance R2, second resistance R2's one end with first resistance R1's the other end is connected, second resistance R2's other end ground connection, the antenna, the input of antenna is connected first resistance R1 with between the second resistance R2, a single -chip microcomputer, the sampling pin of singlechip with the input of antenna is connected, the outside reference power supply pin of the analogue -to -digital conversion of singlechip with the power is connected. Compared with the prior art, the utility model has the advantages of it is following: 1 )Can accurately detect out the GPS antenna insert, extract with three kinds of states of short circuit. 2 ) detection method does not rely on corresponding components and parts parameter error among the PCBA. 本实用新型提供种基于ADC压差法实现GPS天线检测电路，包括：第电阻R1，所述第电阻R1的端连接电源；第