Title:
心電検出装置
Document Type and Number:
Japanese Patent JP5668604
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an electrocardiographic detector capable of rationally suppressing various high frequency noises by a simple constitution.SOLUTION: In the signal supply parts 2 and 3 of an electrocardiographic sensor, an electrode conductor part 15 connected to the non-inverse input terminal (+) of an operational amplifier 22 and a parasitic conductor part 30 connected to the inverse input terminal (-) of the operational amplifier 22 becomes almost the same in potential in a voltage follower circuit 20 to guard the leakage current from the electrode conductor part 15 to the ground. Since the capacitor Cs connected to the inverse input terminal (-) and non-inverse input terminal (+) of the operational amplifier 22 in parallel is formed by the parasitic capacity produced between the electrode conductor part 15 and the parasitic conductor part 30, a high frequency signal of cut-off frequency or above is prevented from being outputted from a voltage follower circuit 20 by the impedance thereof. By this constitution, the same effect can be obtained without separately providing an exclusive low-pass filter.
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Inventors:
中谷 浩人
酒井 一泰
木村 禎祐
福本 晴継
酒井 一泰
木村 禎祐
福本 晴継
Application Number:
JP2011122053A
Publication Date:
February 12, 2015
Filing Date:
May 31, 2011
Export Citation:
Assignee:
株式会社デンソー
International Classes:
A61B5/308
Attorney, Agent or Firm:
Nagoya international patent business corporation