Abstract: A needle dislodgement and blood leakage detection device includes a sensor assembly having a flexible sensor and a flexible substrate. The flexible sensor is provided, on an underside thereof at a location close to the flexible substrate, with a photoelectric sensor including near infrared transmitters that are of an array arrangement. The photoelectric sensor includes a signal amplifier module and a signal filter module that are electrically connected. An alarm device is coupled to the sensor assembly and includes a microprocessor unit, which includes a digital signal converter module, a signal sampling module, a signal demodulation module, a signal processing module, a time division module, a storage module, and a wireless transmission module that are connected in series. The digital signal converter module is connected to the signal filter module. The storage module and the wireless transmission module are respectively connected to a display unit and a computer.

Abstract: A needle dislodgement and blood leakage detection device includes a sensor assembly having a flexible sensor and a flexible substrate. The flexible sensor is provided, on an underside thereof at a location close to the flexible substrate, with a photoelectric sensor including near infrared transmitters that are of an array arrangement. The photoelectric sensor includes a signal amplifier module and a signal filter module that are electrically connected. An alarm device is coupled to the sensor assembly and includes a microprocessor unit, which includes a digital signal converter module, a signal sampling module, a signal demodulation module, a signal processing module, a time division module, a storage module, and a wireless transmission module that are connected in series. The digital signal converter module is connected to the signal filter module. The storage module and the wireless transmission module are respectively connected to a display unit and a computer.