Disclosed is to provide an electrocardiograph ECG signal may be measured stably without being disturbed by motion noise. In the electrocardiograph for measuring electrocardiographic signals by processing the electric signal detected by using the electrode pads for multiple biological mounted on the skin of the A biological, wherein the plurality of biomedical electrode pad are each mutually and stacked by a plurality of sheets of electrodes, and a conductive gel sheet interposed between the electrodes are arranged alternately with the plurality of electrodes, opposite the side of the skin-side in the laminating direction of said plurality of electrodes, their comprising a plurality of dynamic stabilization plates which are stacked on the outside of the electrode, the electrocardiograph is, each, one of the electrodes of the two biomedical electrode pads of the plurality of biomedical electrode pad a first differential circuit for obtaining the original ECG signal by taking the difference between signals from, for each of the two biomedical electrode pad, any body movement by taking the difference between signals from the two electrode noise a second differential circuit for obtaining a signal as a feature in that it comprises a body movement noise removing circuit for removing a low frequency component of each motion noise signals of the two biomedical electrode pad from the original ECG signal there. .BACKGROUND【課題】体動ノイズに妨げられずに心電信号を安定して計測し得る心電計を提供することにある。【解決手段】生体の皮膚に装着される複数の生体用電極パッドを用いて検出した電気信号を処理して心電信号を計測する心電計において、前記複数の生体用電極パッドが各々、互いに積層配置された複数枚の電極と、前記複数枚の電極と交互に配置されてそれらの電極間に介在する導電ゲルシートと、前記複数枚の電極の積層方向で前記皮膚側と反対側の、それら複数枚の電極の外側に積層配置された動圧安定板とを具え、前記心電計が、前記複数の生体用電極パッドのうちの二つの生体用電極パッドのそれぞれの、何れか一つの電極からの信号同士の差分をとって原心電信号を求める第1の差分回路と、前記二つの生体用電極パッドのそれぞれについて、何れか二つの電極からの信号同士の差分をとって体動ノイズ信号を求める第2の差分回路と、前記二つの生体用電極パッドのそれぞれの体動ノイズ信号の低周波成分を前記原心電信号から除去する体動ノイズ除去回路とを具えることを特徴としている。【選択図】図1
