function data =loadeol(filename)

fid = fopen(filename,'r');
fseek(fid,50,'bof');  % 第50个字节开始为通道数
chan = fread(fid,1,'double');

fseek(fid,200,'bof');
data =fread(fid,[chan inf],'int32');
data(1:end-1,:) = data(1:end-1,:)*(2.5*10^6/(49.9)^2/7864320);
fclose(fid);
