Biological information acquisition device and biological state warning system using the same

Abstract

To inexpensively provide a biological information acquisition device that can accurately measure biological signals without interfering with daily life.SOLUTION: A biological information acquisition device 1 acquires biological information about a measured person H1 and comprises: a pair of measurement pad parts 3 that can measure biological signals; and a body frame 2 that applies the same urging force in a direction where the measurement pad parts 3 get close to each other in a state of being applied to each indent E1 at the back of the ear of the subject H1. A biological signal processing unit 4 is connected to each of the measurement pad parts 3. The biological signal processing unit 4 performs computation processing on the biological signals measured by the respective measurement pad parts 3 and extracts biological information.SELECTED DRAWING: Figure 3

Claims

1. A biological information acquisition device that acquires biological information of a subject from the left and right shadows, A pair of measuring pads capable of measuring biological signals, A biasing force application unit that applies the same biasing force in a direction toward each of the measurement pads while each measurement pad is placed against the respective shadow of the person being measured, The system includes a biosignal processing unit connected to each of the aforementioned measurement pads, which performs calculation processing on the biosignals measured by each of the aforementioned measurement pads to extract the biosignal information, The measurement pad section is equipped with a body conduction sound sensor capable of measuring body conduction sound signals. The biosignal processing unit includes a low-pass filter unit that allows only signals lower than a predetermined frequency of the body conduction sound signal measured by the body conduction sound sensor to pass through and extract them as fluctuations in heart rate (heart rate fluctuations), and a high-pass filter unit that allows only signals higher than the predetermined frequency to pass through and extract them as fluctuations in respiratory rate (respiratory fluctuations). The biosignal processing unit is configured to calculate a stress index SI at predetermined intervals T using the formula SI = σRR / σHR, where σHR is the heart rate fluctuation extracted by the low-pass filter unit and σRR is the respiratory rate fluctuation extracted by the high-pass filter unit. It also outputs a stress index matrix M with the stress index SI and the evaluation values ​​W of subjective evaluation items of stress, pain, or mood, pre-input by the subject at each interval T, arranged sequentially as rows, and the time axis as columns. A biological information acquisition device characterized by performing a death time prediction, in which the estimated death time is set to a predetermined time after the point in time when the stress index SI changes from decreasing to increasing over time.

2. In the biological information acquisition device according to claim 1, The aforementioned biological information acquisition device further comprises a gravity sensor, The biological information acquisition device is characterized in that the biological signal processing unit outputs a measurement start signal to the measurement pad when it detects that the inclination angle of the measurement pad portion by the gravity sensor is within a predetermined threshold.

3. In the biological information acquisition device according to claim 1, The measuring pad portion is equipped with a temperature sensor capable of measuring the surface temperature of the person being measured. The biological information acquisition device is characterized in that the biological signal processing unit is configured to arrange the surface temperature measured by the temperature sensor at each time interval T as rows and output the time axis as columns in the stress index matrix M.

4. A biological information acquisition device according to claim 3, which is attached to each of multiple subjects being measured, An artificial intelligence or external database that outputs information on the estimated time of death for each subject based on the aforementioned stress index matrix M, A biological state warning system comprising a management server connected to the biological information acquisition device and the artificial intelligence or external database via a communication network, the management server receiving the stress index matrix M from the biological information acquisition device and the estimated time of death information for each subject output by the artificial intelligence or external database, and transmitting the estimated time of death information to the corresponding biological information acquisition device via the communication network.

5. In the biological state warning system according to claim 4, The system further includes a means for verifying whether the person being measured is the person in question, A biological status warning system characterized in that, when the management server is confirmed to be the person concerned by the identity verification means, it transmits the estimated time of death information to the corresponding biological information acquisition device.

6. In the biological state warning system according to claim 5, The aforementioned identity verification means is a facial recognition system that uses images captured by a camera, and is characterized by this biometric status warning system.

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