CN-116916826-B - Biological data evaluation server, biological data evaluation system, and biological data evaluation method

CN116916826BCN 116916826 BCN116916826 BCN 116916826BCN-116916826-B

Abstract

A biological data evaluation server includes a processor and a memory, and evaluates biological data, and the biological data evaluation server includes a data collection unit that receives heartbeat interval equivalent data from the biological data of a subject, and a Lorentz scatter diagram generation unit that calculates a Lorentz scatter diagram for the heartbeat interval equivalent data for a predetermined period and outputs the Lorentz scatter diagram as an aggregate Lorentz scatter diagram.

Inventors

Sanyuan Junfu
TIAN ZHONGYI
KURIYAMA HIROYUKI
SATO KIMIHIRO

Assignees

罗集帝株式会社

Dates

Publication Date: 20260505
Application Date: 20211125
Priority Date: 20210325

Claims (11)

1.A biological data evaluation server having a processor and a memory, for evaluating biological data, characterized in that, The biological data evaluation server includes: a data collection unit for receiving heartbeat interval equivalent data from the biological data of the subject, and A Lorentz scattergram generator that calculates a Lorentz scattergram from the heartbeat interval equivalent data over a predetermined period and outputs the Lorentz scattergram as an aggregate Lorentz scattergram, The predetermined period includes a first period and a second period shorter than the first period, The Lorentz scattergram generator calculates the Lorentz scattergram in units of the second period based on the heartbeat interval equivalent data, Determining whether or not the loss of the heartbeat interval equivalent data is present based on the lorentz scattergram in the second period, excluding the portion in which the loss of the heartbeat interval equivalent data is generated in the second period, performing aggregation processing in the first period with respect to the lorentz scattergram calculated in the second period, calculating the lorentz scattergram in the first period, and outputting the lorentz scattergram in the first period.
2. The biological data evaluation server according to claim 1, wherein, As the aggregation processing, the lorentz scattergram generation unit calculates a statistic value for each matrix component of the lorentz scattergram matrix representing the plurality of lorentz scattergrams calculated in the second period unit.
3. The biological data evaluation server according to claim 1, wherein, The Lorentz scattergram generation unit sets the second period to be smaller than the first period and to be equal to or longer than a time width required for analyzing heart rate fluctuation.
4. The biological data evaluation server according to claim 1, wherein, The lorentz scattergram generation unit receives information of a time width of the loss of the heartbeat interval equivalent data, and determines the second period based on the information of the time width of the loss of the heartbeat interval equivalent data.
5. The biological data evaluation server according to claim 1, wherein, The biological data evaluation server further includes an outlier chronic occurrence evaluation unit that calculates a feature amount in a predefined region in the lorentz-aggregated scatter diagram, calculates the occurrence degree of an arrhythmia outlier based on the feature amount, and outputs the calculated value as outlier data.
6. The biological data evaluation server according to claim 5, wherein, The biological data evaluation server further includes an unsuitable person determination unit that calculates the frequency of occurrence of the arrhythmia abnormal value from the lorentz pattern and determines whether or not the subject is suitable for evaluation of autonomic nerve function in a third period equal to or longer than the first period.
7. The biological data evaluation server according to claim 6, wherein, The biological data evaluation server further includes a autonomic nerve function index calculation unit that calculates and outputs an autonomic nerve function index from the heartbeat interval equivalent data of the subject suitable for the autonomic nerve function evaluation based on the determination result of the unsuitable person determination unit.
8. The biological data evaluation server according to claim 7, wherein, The biological data evaluation server further includes a warning presentation unit that determines the reliability of the autonomic nerve function index based on the arrhythmia abnormal value, and displays the reliability of the autonomic nerve function index on an output device.
9. The biological data evaluation server according to claim 8, wherein, The biological data evaluation server further includes a risk prediction unit that calculates, based on the autonomic nerve function index, a probability of occurrence of an accident or an unexpected event of the subject person after a predetermined time as an accident risk, The warning presentation unit issues a warning to the subject person whose accident risk exceeds a predetermined threshold value that the accident risk is increased.
10. A biological data evaluation system for evaluating biological data, comprising a biological data evaluation server having a processor and a memory, and a mobile unit having a biological sensor, The mobile body includes a data collection device for detecting biological data including heartbeat interval equivalent data from a subject by the biological sensor and transmitting the biological data to the biological data evaluation server, The biological data evaluation server includes: A data collection unit for receiving the biological data and the heartbeat interval equivalent data, and A Lorentz scattergram generator that calculates a Lorentz scattergram over a predetermined period based on the heartbeat interval equivalent data and outputs the Lorentz scattergram as an aggregate Lorentz scattergram, The predetermined period includes a first period and a second period shorter than the first period, The lorentz scattergram generation unit calculates the lorentz scattergram in the second period based on the heartbeat interval equivalent data, determines whether or not there is a loss of the heartbeat interval equivalent data based on the lorentz scattergram in the second period, excludes a portion in which the loss of the heartbeat interval equivalent data occurs in the second period, performs aggregation processing in the first period with respect to the lorentz scattergram calculated in the second period, calculates the aggregated lorentz scattergram in the first period, and outputs the aggregated lorentz scattergram in the first period.
11. A method for evaluating biological data by a computer having a processor and a memory, characterized in that, The biological data evaluation method comprises the following steps: A data collection step in which the computer receives heartbeat interval equivalent data from the biological data of the subject, and A Lorentz scattergram generation step in which the computer calculates a Lorentz scattergram from the heartbeat interval equivalent data over a predetermined period and outputs the Lorentz scattergram as an aggregate Lorentz scattergram, The predetermined period includes a first period and a second period shorter than the first period, In the lorentz scattergram generating step, the lorentz scattergram is calculated in units of the second period based on the heartbeat interval equivalent data, whether or not the heartbeat interval equivalent data is missing is determined based on the lorentz scattergram in units of the second period, a portion in which the heartbeat interval equivalent data is missing is excluded in units of the second period, and then, an aggregation process is performed on the lorentz scattergram calculated in units of the second period and in units of the first period, to calculate the polymerized lorentz scattergram in the first period, and the polymerized lorentz scattergram in the first period is outputted.

Description

Biological data evaluation server, biological data evaluation system, and biological data evaluation method Reference-based introduction The present application claims priority from japanese patent application publication No. 2021-052246 filed 3 (2021) and 3 months 25, and the contents thereof are incorporated by reference into the present application. Technical Field The present invention relates to a biometric data evaluation server, a system, and a method for evaluating reliability of biometric data measured at the time of safe operation of a propulsion vehicle. Background In recent years, quantitative evaluation of biological state has been performed in order to prevent accidents caused by health of drivers in transportation industry. In the biological state, the vegetative nerve functional evaluation based on the measurement of the heartbeat Interval (BBI) data, which is the Interval of heartbeats, is performed by using a heart rate sensor of various forms which is easy to measure. For example, patent document 1 discloses a medical device that makes a lorentz scattergram (LP) described later with respect to R-wave interval (rri=r-R INTERVAL) data of heartbeat data that is continuously acquired for a predetermined period, and uses a feature quantity related to the obtained lorentz scattergram to determine atrial fibrillation and atrial tachycardia, which are types of arrhythmia, and can detect arrhythmia. Prior art literature Patent literature Patent document 1 Japanese patent publication No. 2008-53017 Disclosure of Invention Problems to be solved by the invention Patent document 1 does not consider a case where heartbeat interval data is measured in a state where traffic accompanying driving is not limited to a quiet state, and the like, and heartbeat interval data is irregularly absent in a plurality of sections in a predetermined period accompanying occurrence of a measurement failure state or communication failure. In the case of the partially missing or missing heart beat interval data, there is a problem that the degree of occurrence of the abnormal heart beat value cannot be quantified. The present invention has been made in view of the above-described problems, and an object thereof is to evaluate the degree of occurrence of an abnormal value of arrhythmia even for beat interval data accompanied by data loss. Means for solving the problems A biological data evaluation server includes a processor and a memory, and evaluates biological data, and the biological data evaluation server includes a data collection unit that receives heartbeat interval equivalent data from the biological data of a subject, and a Lorentz scatter diagram generation unit that calculates a Lorentz scatter diagram from the heartbeat interval equivalent data for a predetermined period, and outputs the Lorentz scatter diagram as an aggregate Lorentz scatter diagram. Effects of the invention Therefore, according to one aspect of the present invention, even for beat interval data accompanied by a data loss or a lack thereof, the degree of occurrence of the arrhythmia abnormal value can be evaluated from the lorentz scattergram generated. This allows evaluation of the reliability of the autonomic nerve function index obtained from the heartbeat interval data measured during the business. The details of at least one implementation of the subject matter disclosed in this specification are set forth in the accompanying drawings and the description below. Other features, aspects, and effects of the disclosed subject matter will become apparent from the following disclosure, the accompanying drawings, and the scope of the claimed patent. Drawings Fig. 1 is a block diagram showing an example of the structure of a biological data evaluation system according to embodiment 1 of the present invention. Fig. 2 is a flowchart showing an example of RRI data transmission processing performed by a driving data collection device of a vehicle according to embodiment 1 of the present invention. Fig. 3 is a flowchart showing an example of a learning process of a chronic occurrence determination model of arrhythmia abnormal values by a biological data evaluation server according to embodiment 1 of the present invention. Fig. 4A shows example 1 of the present invention, which is a diagram showing an example of mask region definition used as a feature extraction model used in a biological data evaluation server. Fig. 4B is a diagram showing an example of a defective mask used in the biological data evaluation server according to example 1 of the present invention. Fig. 4C shows example 1 of the present invention, which is a diagram showing an example of a normal range mask used in the biological data evaluation server. Fig. 4D shows example 1 of the present invention, which is a diagram showing an example of a PVC-like outlier mask used in the biological data evaluation server. Fig. 4E shows example 1 of the present invention, which is a diagram showi