Biological information detection device

A bio-information detection and seat technology, which is applied to the safety device, transportation and packaging of the power device control mechanism, and pulse/heart rate measurement, etc., can solve the problems of low detection accuracy of ECG information and mixed heart beats

Inactive Publication Date: 2007-05-02
PIONEER CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the pressure sensor tends to mix unnecessary signals other than cardiac beats due to the vibration accompanying vehicle behavior during driving or the driver's actions, so the detection accuracy of ECG information is low.

Method used

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Experimental program
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Effect test

Embodiment approach

[0043] The biological information detection device according to the embodiment of the present invention is mounted on a vehicle, ship, or airplane to be driven, and detects at least the physical and mental state of the driver. This biological information detection device has: an electrode sensor having at least one pair of electrodes, which detects a heartbeat by detecting a potential difference between body parts which are in direct contact with the electrodes; and a seat built-in sensor which detects a heartbeat by detecting Vibration to detect heartbeat. And this biological information detection device is configured to be able to use the heartbeat information obtained by the detection of the electrode sensor when the heartbeat detection of the sensor built in the seat, and when the heartbeat detection of the electrode sensor cannot be implemented, it can be determined based on the heartbeat information obtained by the electrode sensor. No detection of the seat built-in sens...

Embodiment 1

[0048] Embodiments of the biological information detection device of the present invention will be described in detail below with reference to the accompanying drawings. Here, an example of a vehicle-mounted biological information detection device that detects biological information related to a driver's physical and mental state based on electrocardiographic information is exemplified. In particular, a device that detects driver drowsiness as biological information will be described.

[0049] As the electrocardiographic information for detecting drowsiness of the driver, here, specifically, the heart rate and heart rate fluctuation are detected. The heart rate changes depending on the posture, temperature, and mental state. However, since the posture and ambient temperature change less during driving, the mental state such as sleepiness is the main cause of the change in the heart rate. In addition, heart rate fluctuation refers to a fluctuation component of the time interval...

Embodiment 2

[0104] In the second embodiment, the drowsiness detection performed by the biological information detection device in the first embodiment described above is described in association with the behavior of the actual vehicle. FIG. 4 is a diagram for explaining the operation of the biological information detection device in various vehicle behaviors. The solid line portion of the graph in FIG. 4 (corresponding to period A and period D) shows the detection result of the steering wheel sensor 100 (refer to FIG. The detection result of the chair installation pressure sensor 110 (see FIG. 1 ). In addition, the part (corresponding to the period B) not shown by the solid line or the one-dot chain line shows that the heart rate was not detected.

[0105] For example, during the period A when driving straight on an ordinary road, since the elapsed time from the start of driving is short, the driver can concentrate on driving carefully, so the state of holding the steering wheel sensor 1...

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Abstract

The invention provides a bioinformation sesor. In a bioinformation sensor, it is judged whether or not the heart beat can be detected by a steering wheel sensor (step S11); and if not (step S11: No), it is judged whether or not the heart beat can be detected by a seat-installed pressure sensor according to the output from an acceleration sensor (step S12) and according to the range of the heart rate variation acquired from the output from the steering wheel sensor (step S18).

Description

technical field [0001] The invention relates to a biological information detection device. Background technique [0002] Currently, the status of vehicle drivers is being monitored, and the obtained information is used to prevent fatigue driving and relieve anxiety. Among the methods of monitoring the state of the driver, there is a method of detecting the biological information of the driver and using the biological information to grasp the state of the driver. For example, there is a method of detecting electrocardiographic information as biological information. According to this method, since the electrocardiographic information reflects the action of the autonomic nerves of the driver, it is possible to more accurately reflect the physical and mental state of the driver and perform appropriate monitoring. [0003] Conventionally, as one method of detecting electrocardiographic information, there is a method of disposing an electrocardiographic information detection unit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/18A61B5/0245A61B5/0452B60K28/06A61B5/024
CPCA61B5/6887B60K28/06A61B5/024
Inventor 柳平雅俊安士光男盐田岳彦
Owner PIONEER CORP
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