JP6991717B2 - Biometric information detection device - Google Patents

Description

The present invention relates to a biometric information detection device that detects biometric information of a moving body operator or the like.

The state of the operator of a moving body such as a vehicle is detected, and the state is used to prevent drowsy driving or the like based on the obtained state. As a method of detecting the state of the operator, acquisition of biological information such as a heart rate can be mentioned.

As a method of detecting biological information such as heart rate, there is a method of arranging an electrode (handle sensor) on a handle for steering a vehicle and detecting a heart rate from a potential difference between both hands detected by the electrode. Further, there is also a method in which a pressure sensor or the like is arranged in the driver's seat (driver's seat), and the vibration of the body surface accompanying the pulsation of the operator's heart is detected by the pressure sensor.

The detection by the handle sensor described above has the advantage of high accuracy, but has the disadvantage that it cannot be detected unless the handle is held with both hands. Therefore, a biometric information detection device having both the handle sensor and the pressure sensor described above and performing heartbeat detection by the pressure sensor when it is determined that the detection by the handle sensor is impossible has been proposed (see, for example, Patent Document 1). ..

WO2005 / 11276A

The method of detecting heartbeat information with a sensor installed in the seat such as a pressure sensor may be less accurate than the handle sensor due to the vibration received by the vehicle etc. and the noise caused by the body movement of the seated passenger. Are known. In the method described in Patent Document 1, even if the detection by the handle sensor is not possible, the detection accuracy is improved by not performing the heartbeat detection by the pressure sensor depending on the state such as the vibration of the vehicle detected by the acceleration sensor. I'm keeping it. Therefore, depending on the driving and road surface conditions, a period during which the heartbeat cannot be detected occurs, and during that period, the state of the operator cannot be detected.

Further, as the automatic driving of automobiles and the like becomes widespread in the future, the chances of the driver releasing the steering wheel will increase, so that it is desired to improve the detection accuracy by the detection unit other than the steering wheel sensor.

Therefore, it is an object of the present invention to provide a biological information detection device capable of detecting heartbeat information with high accuracy even in a situation where a handle sensor cannot be used, for example.

In order to solve the above problems, a first detection unit provided in the steering unit of the moving body and detecting a first heart rate information which is information on the heartbeat of the operator of the moving body and a cockpit of the moving body are provided. The second detection unit that detects the second heartbeat information, which is information about the heartbeat of the operator, the third detection unit that detects the sitting posture of the operator, and the first detection unit, the first heartbeat information. Is detected, the correction parameter for each sitting posture of the operator based on the first heartbeat information is obtained and saved , and the second heartbeat when the first heartbeat information is not detected by the first detection unit. It is characterized by including a correction unit that corrects information for each sitting posture of the operator based on the correction parameters.
The invention according to claim 2 is provided in a steering unit of a moving body, and is provided in a first detecting unit for detecting first heartbeat information which is information on the heartbeat of the operator of the moving body, and a cockpit of the moving body. A second detection unit that detects the second heartbeat information, which is information about the operator's heartbeat, a bandpass filter that passes a specific frequency band for the second heartbeat information, and the first detection unit. When the first heartbeat information is detected, a correction parameter based on the first heartbeat information is determined and saved , and the second heartbeat information when the first heartbeat information is not detected by the first detection unit is stored. The correction unit includes a correction unit for correction based on the correction parameter, and the correction unit is characterized in that the frequency band passed by the band path filter is defined as the correction parameter.
The invention according to claim 3 is provided in a steering unit of a moving body, and is provided in a first detecting unit for detecting a first heart rate information which is information on the heartbeat of the operator of the moving body, and a cockpit of the moving body. A second detection unit that detects the second heartbeat information, which is information about the heartbeat of the operator, a bandpass filter that passes a specific frequency band for the second heartbeat information, and the first detection unit. When the first heartbeat information is detected, correction parameters based on the first heartbeat information are set and saved , and the second heartbeat information when the first heartbeat information is not detected by the first detection unit. The correction unit includes a correction unit that corrects the information based on the correction parameter, and the correction unit sets a threshold value set for the amplitude of the second heart rate information after passing through the bandpass filter as the correction parameter. It is characterized by that.
The invention according to claim 4 is provided on a steering unit of a moving body, and is provided on a first detecting unit for detecting a first heart rate information which is information on the heartbeat of the operator of the moving body, and a cockpit of the moving body. A second detection unit that is provided and detects the second heartbeat information that is information about the heartbeat of the operator, and when the first heartbeat information is detected by the first detection unit, it is based on the first heartbeat information. The correction unit includes a correction unit that obtains and stores correction parameters and corrects the second heart rate information when the first heart rate information is not detected by the first detection unit based on the correction parameters. Is characterized in that the numerical value included in the second heart rate information is multiplied by the numerical value included in the correction parameter to correct the value.

The invention according to claim 5 is provided in a first detection unit provided in the steering unit of the moving body and detecting the first heart rate information which is information regarding the heartbeat of the operator of the moving body, and in the cockpit of the moving body. Biometric information executed by a biometric information detection device including a second detection unit that detects a second heartbeat information that is information about the operator's heartbeat and a third detection unit that detects the operator's sitting posture. In the detection method, when the first heartbeat information is detected by the first detection unit, the first heartbeat information is calculated and saved for each sitting posture of the operator based on the first heartbeat information . It is characterized by including a correction step of correcting the second heartbeat information when the first heartbeat information is not detected by the detection unit for each sitting posture of the operator .
The invention according to claim 6 is provided in a first detection unit provided in the steering unit of the moving body and detecting the first heartbeat information which is information regarding the heartbeat of the operator of the moving body, and in the cockpit of the moving body. A biological information detection device including a second detection unit that detects second heartbeat information, which is information about the operator's heartbeat, and a bandpass filter that passes a specific frequency band for the second heartbeat information. A frequency band that is executed and is passed through by the bandpass filter that is determined and stored based on the first heartbeat information when the first heartbeat information is detected by the first detection unit. Is characterized by including a correction step of correcting the second heartbeat information when the first heartbeat information is not detected by the first detection unit .
The invention according to claim 7 is provided in a first detection unit provided in the steering unit of the moving body and detecting the first heart rate information which is information regarding the heartbeat of the operator of the moving body, and in the cockpit of the moving body. A biological information detection device including a second detection unit that detects a second heartbeat information that is information about the operator's heartbeat, and a bandpass filter that passes a specific frequency band for the second heartbeat information. The second heartbeat information, which is an executed biological information detection method, is set and stored based on the first heartbeat information when the first heartbeat information is detected by the first detection unit. It is characterized by including a correction step of correcting the second heartbeat information when the first heartbeat information is not detected by the first detection unit by using the threshold value of the amplitude after passing through the bandpass filter .
The invention according to claim 8 is provided in a first detection unit provided in the steering unit of the moving body and detecting the first heart rate information which is information regarding the heartbeat of the operator of the moving body, and in the cockpit of the moving body. It is a biological information detection method executed by a biological information detection device including a second detection unit for detecting a second heartbeat information which is information on the heartbeat of the operator, and the first detection unit is used to detect the first. When the heart rate information is detected, the value included in the correction parameter calculated and saved based on the first heart rate information is multiplied by the value included in the second heart rate information, so that the first detection unit can use the first detection unit. 1 It is characterized by including a correction step of correcting the second heartbeat information when the heartbeat information is not detected .

The invention according to claim 9 is characterized in that the biometric information detection method according to any one of claims 5 to 8 is executed by a computer.

It is a block diagram of the biological information detection apparatus which concerns on 1st Embodiment of this invention. It is a flowchart of the coefficient calculation operation of the biological information detection apparatus shown in FIG. It is a flowchart of the comprehensive operation of the biological information detection apparatus shown in FIG. It is a waveform diagram for demonstrating the bandpass filter of the biological information detection apparatus which concerns on 2nd Embodiment of this invention.

Hereinafter, the biological information detection device according to the embodiment of the present invention will be described. In the biological information detection device according to the embodiment of the present invention, the first detection unit is provided in the steering unit of the moving body, detects the first heartbeat information which is the information regarding the heartbeat of the operator of the moving body, and the second. The detection unit is provided in the cockpit of the mobile body and detects the second heartbeat information which is the information regarding the heartbeat of the operator. Then, the correction unit obtains a correction parameter based on the first heartbeat information, and corrects the second heartbeat information based on the correction parameter. By doing so, even if the detection accuracy of the second detection unit is lower than that of the first detection unit, the accuracy of the first detection unit can be approached. Therefore, even if it is difficult for the first detection unit to detect, the second detection unit can be used.

Further, a third detection unit for detecting the sitting posture of the operator is further provided, and the correction parameters used at the time of correction may be set for each sitting posture of the operator. By doing so, it is possible to accurately correct the second heartbeat information that changes depending on the sitting posture of the driver's seat.

Further, a bandpass filter for passing a specific frequency band with respect to the second heartbeat information may be further provided, and the correction unit may change the frequency band passed by the bandpass filter as a correction parameter. By doing so, it is possible to set and correct the second heartbeat information detected by the second detection unit so as to pass through the frequency range that the first heartbeat information can take.

Further, a bandpass filter for passing a specific frequency band with respect to the second heartbeat information may be further provided, and the correction parameter may include a threshold value set for the amplitude of the second heartbeat information. By doing so, it is possible to set and correct an amplitude threshold value that matches the value of the first heartbeat information with respect to the second heartbeat information detected by the second detection unit.

Further, the correction unit may correct by multiplying the second heartbeat information by a numerical value included in the correction parameter. By doing so, for example, the magnification can be obtained based on the first heartbeat information and the second heartbeat information, and can be corrected by multiplying the magnification.

Further, the second detection unit may transmit the transmitted wave to the operator, receive the reflected wave of the transmitted wave, and detect the second heartbeat information based on the received reflected wave. By doing so, a sensor that transmits a transmitted wave to the operator, receives a reflected wave of the transmitted wave, and detects heartbeat information based on the received reflected wave, a so-called microwave sensor, is second. When used as a detection unit, it can be corrected with high accuracy.

Further, the second detection unit may detect the second heartbeat information based on the body potential detected by the capacitively coupled electrode that detects the body potential of the operator in the electrically insulated state. By doing so, the second detection is a sensor that detects heartbeat information based on the body potential detected by the capacitance-coupled electrode that detects the operator's body potential in an electrically insulated state, that is, a so-called capacitive-coupled sensor. When used as a part, it can be corrected with high accuracy.

Further, the biological information detection method according to the embodiment of the present invention is a first detection unit that is provided in the steering unit of the moving body and detects the first heartbeat information which is information on the heartbeat of the operator of the moving body in the correction step. The correction parameter based on the first heart rate information detected in is obtained, and the second detection unit that is provided in the cockpit of the moving body and detects the second heart rate information, which is information on the heartbeat of the operator, detects it based on the correction parameter. The second heartbeat information is corrected. By doing so, even when the second detection unit has a lower detection accuracy than the first detection unit, the accuracy of the first detection unit can be approached to the accuracy of the first detection unit. Therefore, even if it is difficult for the first detection unit to detect, the second detection unit can be used.

Further, it may be a biometric information detection program in which the above-mentioned biometric information detection method is executed by a computer. By doing so, the data detected by the second detection unit provided in the cockpit can be corrected by using a computer, so that the second detection unit has lower detection accuracy than the first detection unit. Even in this case, the accuracy of the first detection unit can be approached to that of the first detection unit. Therefore, even if it is difficult for the first detection unit to detect, the second detection unit can be used.

The biological information detection device according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. As shown in FIG. 1, the biological information detection device 1 includes a handle sensor 100, a seat sensor 110, a control unit 120, a camera 130, and a notification device 140. The biological information detection device 1 shown in FIG. 1 is installed in a moving body such as an automobile. Further, the moving body may be other than an automobile as long as the driver (operator) is on board.

The steering wheel sensor 100 as the first detection unit is configured by disposing a pair of electrodes 100a and 100b on a ring-shaped steering wheel main body 100c, which is a steering unit mounted inside an automobile, in a state of being separated from each other. The steering wheel sensor 100 is configured such that when the driver operates the steering wheel, the left hand comes into contact with one of the electrodes 100a and the right hand comes into contact with the other electrode 100b.

As is known, the steering wheel sensor 100 can directly detect the potential difference between the two hands acquired when both hands of the driver come into contact with the electrodes 100a and 100b as an electric signal. As described in Patent Document 1, heart rate information such as heart rate, respiratory rate, and heart rate fluctuation can be detected from the electric signal acquired by the handle sensor 100. Hereinafter, the heartbeat information, which is the information regarding the heartbeat of the operator detected by the handle sensor 100, is referred to as the first heartbeat information.

The seat sensor 110 as the second detection unit is arranged at the seat portion corresponding to the lower part of the buttocks, the lower part of the thighs, the back part, etc. of the driver's seat arranged in the vehicle. The arrangement position of the seat sensor 110 is not particularly limited as long as it is a seat portion that is pressed by the driver's body surface when the driver sits on the seat. Further, the seat sensors 110 may be arranged at a plurality of positions.

The seat sensor 110 irradiates the driver seated in the seat with microwaves from the sensor, and changes in the microwave reflected from the surface of the body that vibrates slightly due to the movement of the heart or lungs, resulting in heart rate or respiratory rate. It is a known sensor that detects heartbeat information such as (also called a microwave Doppler sensor). That is, the seat sensor 110 transmits a transmitted wave to the driver (operator), receives the reflected wave of the transmitted wave, and detects the second heartbeat information based on the received reflected wave. Hereinafter, the heartbeat information, which is the information regarding the heartbeat of the operator detected by the seat sensor 110, is referred to as the second heartbeat information.

The seat sensor 110 is not limited to the microwave sensor described above, but is based on the body potential detected by the pressure sensor described in the prior art and the capacitively coupled electrode that detects the body potential of the driver in an electrically insulated state. A capacitively coupled sensor or the like that detects biological information such as heartbeat can be used.

In such detection by the seat sensor 110, the driver can perform the detection only by sitting on the seat, so that the detection can be performed without the driver being aware of it.

The control unit 120 as a correction unit is composed of a microcomputer (microcomputer) or the like including a memory, a CPU (Central Processing Unit), and the like. The control unit 120 may be configured as an ECU (Electronic Control Unit), or may be configured in common with a control unit of an in-vehicle device such as a car navigation device.

The control unit 120 estimates whether or not the driver is drowsy based on the heartbeat information detected by the steering wheel sensor 100 and the seat sensor 110. Since the method of estimating drowsiness from heartbeat information is known from Patent Document 1 and the like described above, the description thereof will be omitted. Further, the control unit 120 corrects the second heartbeat information detected by the seat sensor 110 based on the first heartbeat information detected by the steering wheel sensor 100.

The camera 130 as the third detection unit is composed of a camera module or the like having an image pickup element such as a CMOS (Complementary Metal Oxide Semiconductor) sensor or a CCD (Charge Coupled Device) sensor. The camera 130 is provided on the steering post, the ceiling of the vehicle interior, or the like, and photographs the driver. Since the camera 130 captures the sitting posture of the driver as described later, it is preferable to install the camera 130 at a position where the sitting posture of the driver can be suitably photographed. Further, a plurality of cameras 130 may be provided.

The notification device 140 is configured to output a guidance voice, a buzzer sound, or the like based on the signal output from the control unit 120. For example, here, when the driver's drowsiness is detected by the detection using the handle sensor 100 and the seat sensor 110, a control signal is output from the control unit 120 to the notification device 140 in order to alert the driver. .. As a result, a buzzer sound or the like is emitted from the notification device 140.

Alternatively, the notification device 140 is provided with a voice synthesis unit, and is configured to synthesize a guidance voice such as "Why don't you take a break" based on the control signal from the control unit 120 and output this guidance voice? May be good. Further, the car navigation device mounted in the car may include the notification device 140, and may provide guidance to the nearest resting place obtained by searching with the car navigation device.

Next, a correction method in the control unit 120 of the biological information detection device 1 having the above-described configuration will be described. In this embodiment, first, the heart rate information is simultaneously detected by both the steering wheel sensor 100 and the seat sensor 110. Then, the control unit 120 obtains a coefficient as a correction parameter from the heartbeat information acquired at this time, and uses this coefficient as a correction parameter to correct by multiplying the numerical value included in the second heartbeat information detected by the seat sensor 110.

This coefficient is obtained by, for example, H1 / H2, where H1 is the heart rate included in the first heart rate information detected by the handle sensor 100 and H2 is the heart rate included in the second heart rate information detected by the seat sensor 110. .. Note that H1 and H2 may be data detected at a specific time, or may be an average value of a plurality of acquired data. Further, this coefficient may be sequentially updated at the timing when the heartbeat information can be acquired by both sensors thereafter.

Further, this coefficient is set for each sitting posture of the driver. When the driver sits on the seat in a natural posture, his back is slightly lifted from the seat, his body is bent against the seat surface, or when he goes out of the alley to the main street or runs while looking for a road. The second heartbeat information detected by the seat sensor 110 will have different values depending on the sitting posture of the driver, such as when the driver is leaning forward. Therefore, if the coefficient is only when the driver sits on the seat in a natural posture, the coefficient is corrected to a value different from the value that should be originally corrected, for example, when leaning forward. Therefore, the above-mentioned coefficient is obtained for each seating posture assumed in advance, the sitting posture of the driver is detected by the camera 130, and the heartbeat information is accurately obtained by correcting the coefficient according to the detected sitting posture. Can be detected. The coefficient may be one type without being set for each sitting posture of the driver.

Next, the operation of the biological information detection device 1 having the above-described configuration will be described with reference to the flowcharts of FIGS. 2 and 3. The flowcharts shown in FIGS. 2 and 3 are executed by the control unit 120.

The flowchart shown in FIG. 2 is the above-mentioned coefficient calculation operation. First, in step S11, it is determined whether or not both the handle sensor 100 and the seat sensor 110 can detect the heartbeat information, and if it can be detected (YES), the coefficient is calculated by the above-mentioned method in step S12. After calculation, in step S13, the sitting posture of the driver is detected by the camera 130. Then, in step S14, the coefficient calculated in step S12 is associated with the sitting posture detected in step S13 and stored in the memory or the like in the control unit 120. On the other hand, in step S11, when the handle sensor 100 cannot be detected and both sensors do not correspond to detectable heart rate information (NO), the process waits in step S11.

The flowchart shown in FIG. 3 is a comprehensive operation (biological information detection method) of the biometric information detection device 1 described above. First, in step S21, it is determined whether or not both the handle sensor 100 and the seat sensor 110 can detect the heartbeat information, and if it is possible (YES), the heartbeat information detected by the handle sensor 100 makes the person drowsy. If it is not possible (NO), the process proceeds to step S25 assuming that the heart rate information can be detected only by the seat sensor 110, and the camera 130 detects the sitting posture of the driver. ..

Next, in step S23, the coefficient corresponding to the sitting posture detected in step S22 is selected, and in the subsequent step S24, the second heart rate information (detection value) detected by the seat sensor 110 is corrected by the above-mentioned method. That is, step S24 functions as a correction step.

Next, when it is necessary to estimate drowsiness based on the heartbeat information detected by the handle sensor 100 or the seat sensor 110 in step S25 and notify the driver by the estimated drowsiness in step S26 (if necessary). In step S27, the notification device 140 is notified. On the other hand, in step S26, when it is not necessary to notify (if not), the notification device 140 is not notified and the process ends.

According to this embodiment, the steering wheel sensor 100 is provided on the steering wheel body 100c of the vehicle to detect the first heartbeat information which is information on the heartbeat of the driver of the vehicle, and the seat sensor 110 is provided on the driver's seat of the vehicle. The second heartbeat information, which is information about the driver's heartbeat, is detected. Then, the control unit 120 obtains a coefficient based on the first heartbeat information, multiplies the second heartbeat information by the coefficient, and corrects the second heartbeat information. By doing so, even when the seat sensor 110 has a lower detection accuracy than the steering wheel sensor 100, the accuracy of the steering wheel sensor 100 can be approached. Therefore, the seat sensor 110 can be used even when the handle sensor 100 is difficult to detect.

A camera 130 for detecting the sitting posture of the driver is further provided, and a coefficient used at the time of correction is set for each sitting posture of the driver in the control unit 120. By doing so, it is possible to accurately correct the second heartbeat information that changes depending on the sitting posture of the driver's seat.

Further, the seat sensor 110 is composed of a microwave sensor and detects the second heartbeat information. By doing so, accuracy is achieved when a microwave sensor is used that transmits the transmitted wave to the operator, receives the reflected wave of the transmitted wave, and detects the heartbeat information based on the received reflected wave. It can be corrected well.

Next, the biological information detection device according to the second embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

The biological information detection device 1 according to this embodiment has the same configuration as that of FIG. 1, but the correction method is different. In this embodiment, for the bandpass filter provided in the control unit 120 to be applied to the second heartbeat information detected by the seat sensor 110, the frequency band (passing band) to be passed is set to the first heartbeat information detected by the handle sensor 100. Change based on.

FIG. 4 shows an example of a waveform obtained from a microwave sensor as the seat sensor 110. The upper part of FIG. 4 is the waveform itself (raw data) obtained from the microwave sensor, the middle part is the waveform obtained by extracting the part corresponding to the heart rate from the raw data, and the lower part is the waveform obtained by extracting the part corresponding to the respiratory rate from the raw data. Is.

For the waveform shown in FIG. 4, the waveforms of the heart rate and the respiratory rate are extracted by passing the raw data through a bandpass filter. Since the pass band of this bandpass filter is usually set widely assuming a range of heart rate and respiratory rate that a person can take, noise such as vehicle vibration is likely to be mixed. Therefore, the control unit 120 changes the pass band of the bandpass filter as a correction parameter based on the first heartbeat information detected by the handle sensor 100. For example, the center frequency of the bandpass filter is determined based on the detection value of the handle sensor 100. In this way, the pass band of the bandpass filter is adjusted according to the possible range such as the heart rate detected by the handle sensor 100.

Further, the pass band of the bandpass filter may be selected based on the sitting posture of the driver.

Further, the value after changing the pass band of the bandpass filter may be multiplied by a coefficient as in the first embodiment. If only the pass band of the bandpass filter is changed, the second heartbeat information fluctuates within that band, so that the accuracy of the heartbeat information detected by the handle sensor 100 may be low. Therefore, the accuracy can be further improved by multiplying the coefficient together with the pass band of the bandpass filter.

According to this embodiment, a bandpass filter that passes a specific frequency band with respect to the second heartbeat information is further provided, and the control unit 120 changes the frequency band passed by the bandpass filter as a correction parameter. By doing so, it is possible to set and correct the second heartbeat information detected by the seat sensor 110 so as to pass through the frequency range that the first heartbeat information can take. Therefore, the accuracy of the handle sensor 100 can be approached by reducing the influence of noise such as vibration of the vehicle.

Further, the control unit 120 selects the frequency band through which the bandpass filter passes based on the sitting posture. By doing so, the frequency band of the bandpass filter can be changed for each sitting posture, so that the accuracy of the second heartbeat information that changes depending on the sitting posture can be improved.

As a modification of the second embodiment, the threshold value of the amplitude determined when measuring the heart rate or the respiratory rate of the waveform after passing through the bandpass filter is set to the first heart rate information detected by the handle sensor 100. It may be changed based on. In the case of FIG. 4, this threshold value is a value set with respect to the vertical axis. That is, this value is adjusted so as to be within the range of the value such as the heart rate detected by the handle sensor 100. For example, when the heart rate detected by the handle sensor 100 is 70, the amplitude threshold value is set so as to be 70 for the heart rate waveform after passing through the bandpass filter. That is, the correction value may be changed by using the threshold value set for the amplitude of the second heartbeat information as the correction parameter.

Further, although the second embodiment and the modification described above have been described with the microwave sensor as the seat sensor 110, the pressure sensor and the capacitive coupling type sensor can also acquire the waveform as shown in FIG. 4, and thus can be applied.

Further, in the above-described embodiment, the correction is always performed, but for example, when the heartbeat information is acquired by both sensors and the correction parameters are calculated, the correlation of the waveforms obtained from both sensors is small. In this case, even if the correction parameter is calculated, there is a high possibility that the second heartbeat information detected by the seat sensor 110 cannot be corrected correctly. Therefore, the correction may not be performed in the sitting posture. By doing so, the accuracy of the obtained heartbeat information can be maintained.

Further, the correction parameters such as the above-mentioned coefficient, pass band, and amplitude threshold value are stored in the non-volatile storage element for each individual, and when the driver gets on the vehicle, the individual is identified by the camera 130 or the like, and the identified person is identified. The corresponding correction parameters may be used. That is, a storage unit for storing correction parameters for each individual and an individual identification unit are provided, and the correction unit corrects with the correction parameters stored in the storage unit based on the identification result of the individual identification unit. By doing so, it is not necessary to calculate the correction parameter every time.

Further, the present invention is not limited to the above examples. That is, those skilled in the art can carry out various modifications according to conventionally known knowledge within a range that does not deviate from the gist of the present invention. Even with such a modification, as long as the configuration of the biological information detection device of the present invention is still provided, it is, of course, included in the category of the present invention.

1 Biometric information detection device 100 Handle sensor (1st detection unit)
110 Seat sensor (second detector)
120 Control unit (correction unit, bandpass filter)
130 camera (3rd detector)
S24 Correct the detection value of the seat sensor (correction process)

Claims (9)

A first detection unit provided in the steering unit of the moving body and detecting the first heart rate information which is information on the heartbeat of the operator of the moving body, and
A second detection unit provided in the cockpit of the moving body and detecting a second heartbeat information which is information on the heartbeat of the operator, and a second detection unit.
A third detection unit that detects the sitting posture of the driver, and
When the first heart rate information is detected by the first detection unit, the correction parameter for each sitting posture of the operator based on the first heart rate information is obtained and stored , and the first detection unit obtains and stores the correction parameter. It is provided with a correction unit that corrects the second heart rate information when the heart rate information is not detected for each sitting posture of the operator based on the correction parameters.
A biological information detection device characterized by this. A first detection unit provided in the steering unit of the moving body and detecting the first heart rate information which is information on the heartbeat of the operator of the moving body, and
A second detection unit provided in the cockpit of the moving body and detecting a second heartbeat information which is information on the heartbeat of the operator, and a second detection unit.
A bandpass filter that passes a specific frequency band for the second heartbeat information,
When the first heartbeat information is detected by the first detection unit , a correction parameter based on the first heartbeat information is determined and stored , and the first detection unit does not detect the first heartbeat information. A correction unit that corrects the second heartbeat information based on the correction parameter is provided.
The correction unit determines the frequency band passed by the bandpass filter as the correction parameter.
A biological information detection device characterized by this. A first detection unit provided in the steering unit of the moving body and detecting the first heart rate information which is information on the heartbeat of the operator of the moving body, and
A second detection unit provided in the cockpit of the moving body and detecting a second heartbeat information which is information on the heartbeat of the operator, and a second detection unit.
A bandpass filter that passes a specific frequency band for the second heartbeat information,
When the first heartbeat information is detected by the first detection unit, correction parameters based on the first heartbeat information are set and saved , and when the first heartbeat information is not detected by the first detection unit. A correction unit that corrects the second heartbeat information based on the correction parameter is provided.
The correction unit sets a threshold value set for the amplitude of the second heartbeat information after passing through the bandpass filter as the correction parameter.
A biological information detection device characterized by this. A first detection unit provided in the steering unit of the moving body and detecting the first heart rate information which is information on the heartbeat of the operator of the moving body, and
A second detection unit provided in the cockpit of the moving body and detecting a second heartbeat information which is information on the heartbeat of the operator, and a second detection unit.
When the first heartbeat information is detected by the first detection unit , a correction parameter based on the first heartbeat information is obtained and stored , and the first detection unit does not detect the first heartbeat information. A correction unit that corrects the second heartbeat information based on the correction parameter is provided.
The correction unit corrects by multiplying the numerical value included in the second heart rate information by the numerical value included in the correction parameter.
A biological information detection device characterized by this. The first detection unit provided in the steering unit of the moving body to detect the first heartbeat information which is the information on the heartbeat of the operator of the moving body, and the information on the heartbeat of the operator provided in the cockpit of the moving body. A biometric information detection method executed by a biometric information detection device including a second detection unit for detecting a certain second heartbeat information and a third detection unit for detecting the sitting posture of the operator.
When the first heart rate information is detected by the first detection unit, the first detection unit calculates and saves each sitting posture of the operator based on the first heart rate information . (1) A biological information detection method comprising a correction step of correcting the second heartbeat information when the heartbeat information is not detected for each sitting posture of the operator . The first detection unit provided in the steering unit of the moving body to detect the first heartbeat information which is the information on the heartbeat of the operator of the moving body, and the information on the heartbeat of the operator provided in the cockpit of the moving body. It is a biometric information detection method executed by a biometric information detection device including a second detection unit that detects a certain second heartbeat information and a bandpass filter that passes a specific frequency band for the second heartbeat information. hand,
When the first heartbeat information is detected by the first detection unit, the frequency band passed by the bandpass filter determined and stored based on the first heartbeat information is used by the first detection unit. A biological information detection method comprising a correction step of correcting the second heartbeat information when the first heartbeat information is not detected. The first detection unit provided in the steering unit of the moving body to detect the first heartbeat information which is the information on the heartbeat of the operator of the moving body, and the information on the heartbeat of the operator provided in the cockpit of the moving body. It is a biometric information detection method executed by a biometric information detection device including a second detection unit that detects a certain second heartbeat information and a bandpass filter that passes a specific frequency band for the second heartbeat information. hand,
When the first heartbeat information is detected by the first detection unit, the threshold value of the amplitude of the second heartbeat information after passing through the bandpass filter, which is set and saved based on the first heartbeat information, is used. A method for detecting biological information, which comprises a correction step of correcting the second heartbeat information when the first heartbeat information is not detected by the first detection unit . The first detection unit provided in the steering unit of the moving body to detect the first heartbeat information which is the information on the heartbeat of the operator of the moving body, and the information on the heartbeat of the operator provided in the cockpit of the moving body. It is a biometric information detection method executed by a biometric information detection device including a second detection unit for detecting a certain second heartbeat information.
By multiplying the numerical value included in the correction parameter calculated and saved based on the first heartbeat information when the first heartbeat information is detected by the first detection unit with the numerical value included in the second heartbeat information. A biological information detection method comprising a correction step of correcting the second heartbeat information when the first heartbeat information is not detected by the first detection unit . A biometric information detection program according to any one of claims 5 to 8, wherein the biometric information detection method is executed by a computer.

Images