| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable alarm device for obstructive electric waves which detects obstructive electric waves causing wrong operation of a heart pacemaker, etc., and a system for controlling generation of electric waves from sources such as a cellular phone, etc., near a medical equipment user. SOLUTION: Electric waves F inputted to a tuner 12 by way of an antenna 11 are selected one by one with scanning signals SCN from a received frequency control part 13, and received signals RCV are produced and outputted to the BPF 14. The intermediate frequency signals 1F passing through the BPF 14 are inputted to an wave detecting part 15, and detection signals DET are produced in proportion to the amplitude. The detection signals DET are converted to digital measuring data DAT at ADC 16, and are compared with standard values REF saved at a register 19 at a comparing part 17. If the measuring data DAT exceed the standard values REF, an alarm signal ALM is outputted and alarm sound is outputted through an alarm part 20 and a speaker 21. |
