1. detection unit for measuring the device information of the blood pressure, comprising: a cavity (40) of compression of the fluid to compress the artery at the measuring section of the measuring portion by compression ! a photoelectric sensor (50) including a light emitting portion (51) and the light-receiving portion (52) for detecting the light radiation towards the measuring site from the light emitting portion (51) receiving the detection light transmitted through the measuring portion using the light receiving part ( 52), and outputting the output signal corresponding to the received light amount of detection light and! a fixing unit (32) for mounting a photoelectric transducer (50) relative to the measuring site wherein ! a fixing unit (32) includes a main portion (32a) with the surface (32a1) of the sensor attachment with attached the photoelectric sensor (50), and a guide portion (32b), mounted projecting from the main portion (32a) toward the surface side (32a1 ) attaching the sensor, wherein the guide portion has a distal end directly or indirectly disposed on the body surface near the measuring section, and a photoelectric sensor (50) is fixed relative to the measuring site by the fixing unit (32) ! a cavity (40) of compression of the fluid is mounted on the surface (32a1) attaching the sensor to cover the photoelectric sensor (50) and! the guide portion (32b) is disposed so as to surround the photoelectric sensor (50) when on the mounting block (32) viewed from the normal direction of the surface (32a1) of the sensor attachment. ! 2. detection unit for yc1. Блок обнаружения для устройства измерения информации о кровяном давлении, содержащий:полость (40) сжатия с текучей средой для сжатия артерии на измерительном участке посредством сжатия измерительного участкафотоэлектрический датчик (50), включающий в себя светоизлучающую часть (51) и светопринимающую часть (52) для излучения света обнаружения по направлению к измерительному участку от светоизлучающе
