Development Of Wireless Multi-probe Cervical Cancer Electro-optical Screening System

Early screening of cervical cancer is of great significance in reducing mortality.Existing screening methods for cervical cancer,such as cytology screening methods,have defects in screening time,operational difficulty and large-scale screening.Photoelectric detection methods with short time,simple operation and non-invasiveness have received extensive attention in the field of cervical cancer prevention and treatment.The existing photoelectric cervical cancer screening system adopts the wired connection mode of the single probe single upper computer.On the one hand,it cannot realize the simultaneous work of multiple probes,resulting in low screening efficiency,and cannot achieve centralized management of screening data.On the other hand,the wired connection method limits the movement of the probe,and is inconvenient to operate.To this end,this paper designed a wireless multi-probe cervical cancer electron-optical screening system.The system is based on the theory of tissue optics and bioimpedance three-element model.It uses the principle of different feedback signals after photoelectric stimulation to normal tissue and diseased tissue.The method of photoelectric combined detection is applied to early screening of cervical cancer.Three different wavelengths of LED light source and three electrodes were used to stimulate the cervical tissue in time,and the feedback signal after photoelectric stimulation was sampled by A/D.The optical A/D sampling data was compared with the A/D sampling data obtained by irradiating the standard photometric cylinder.The relative reflectivity is obtained as the optical characteristic parameter.In the electrical measurement,the time decay constant is obtained as the electrical characteristic parameter by processing the data sampled by the A/D.Finally,the photoelectric characteristic parameter is classified by the tissue classification model to determine whether the tissue has a lesion.The cervical cancer screening system is mainly divided into three parts: a wireless probe,a data wireless receiving module and a human-computer interaction module.The wireless probe realizes three-wavelength constant current LED driving,PD preamplification,measurement timing control,A/D sampling of photoelectric feedback signal,wireless transmission of data,self-test of equipment,etc.;The data wireless receiving module mainly realizes the function of wirelessly receiving and transmitting data to the host computer;the human-computer interaction module mainly designs the human-computer interaction interface and realizes the control of the button and the OLED.The human-computer interaction interface is used to fill in the basic information of the patient,realize the receiving,storing and processing of the data,embed the support vector machine algorithm and call the classification model to classify the photoelectric characteristic parameters obtained after the processing,obtain the classification result,and print the case-reporting.The cervical cancer screening system realizes the wireless connection between the probe and the data receiving module,which increases the moving range of the probe,and can simultaneously perform screening of multiple patients with multiple probes.Compared with the existing single probe and single upper computer matching,the system saves the resources of the host computer and realizes the centralized management of the screening data,so that the screening system has the advantages of being movable,simple operation,non-invasive in real time.It can be extended to remote areas,which is of great significance for improving the accuracy of screening cervical cancer and reducing its mortality.