Vital information acquisition system

Abstract

To realize a vital information acquisition system capable of appropriately acquiring vital information of a subject.SOLUTION: A vital information acquisition system S includes: a sensor 1 which emits a signal wave toward the body of a subject U, receives the reflection wave of a signal wave reflected from the body of the subject U and outputs a signal corresponding to the reflection wave; an information processing device 2 which acquires the vital information of the subject U on the basis of the selected signal in the signals output by the sensor 1; and a storage device 24 which stores selection conditions 4 for selecting the signal used for the information processing device 2 to acquire the vital information in association with the subject U. The selection conditions 4 are the conditions for specifying the travel direction of the reflection wave corresponding to the signal used by the information processing device 2 for acquiring the vital information.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a vital information acquisition system for acquiring vital information of a subject, and in particular to a vital information acquisition system that receives a reflected wave of a signal wave reflected by the subject's body using a sensor and acquires vital information based on an output signal from the sensor. [Background technology]

[0002] It is important from the perspective of occupational safety and health to understand the physiological condition (hereinafter simply referred to as "condition") of people working in a workplace (hereinafter referred to as "subjects") and to appropriately manage the condition of each subject. A technology for acquiring vital information such as blood pressure of a subject for the purpose of judging whether the subject is in good or bad condition has already been developed and is actually used at work sites (see, for example, Patent Document 1). The invention described in Patent Document 1 relates to a method for measuring blood pressure from reflected waves from the subject's heart using a non-contact sensor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-176426 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the blood pressure measurement method described in Patent Document 1, it is necessary to accurately identify the position of the subject's heart when acquiring vital information, so it is difficult to acquire (measure) vital information such as blood pressure values. Therefore, there is a demand for a technology that can accurately acquire vital information of a subject at a work site and appropriately manage the subject's condition using the acquired vital information.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and aims to solve the above-mentioned problems, specifically, to realize a vital information acquisition system that can appropriately acquire vital information of a subject. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the vital information acquisition system of the present invention comprises a sensor that emits a signal wave toward the body of a subject, receives a reflected wave of the signal wave reflected by the body of the subject, and outputs a signal corresponding to the reflected wave, an information processing device that acquires the subject's vital information based on a selection signal that satisfies a selection condition among the signals output from the sensor, and a storage device that stores the selection condition in association with the subject, and the selection condition is a condition for identifying the direction of travel of the reflected wave received by the sensor when outputting the selection signal.

[0007] According to the vital information acquisition system of the present invention configured as described above, it is possible to appropriately acquire vital information of a subject using a signal (selection signal) selected based on selection conditions associated with the subject.

[0008] In addition, in the vital information acquisition system of the present invention, the information processing device compares the registration information registered about the subject with the input information entered about the subject, and acquires the subject's vital information if the content of the input information matches the content of the registration information. In the above configuration, it is possible to acquire vital information of a subject after personal authentication of the subject is performed.

[0009] In addition, the vital information acquisition system of the present invention is equipped with a distance sensor that outputs a distance signal according to the distance from the sensor to the subject's body, and the position of the distance sensor relative to the sensor is predetermined, and the information processing device acquires the subject's vital information based on the distance signal and the selection signal. In the above configuration, vital information of the subject can be acquired more appropriately by taking into account the distance from the distance sensor to the subject's body.

[0010] In addition, in the vital information acquisition system of the present invention, the information processing device acquires the subject's vital information at each of a plurality of points in time during a predetermined period, and determines whether the subject's vital information acquired at a second point in time after the first point in time is good or bad based on the subject's vital information acquired at a first point in time among the plurality of points in time. In the above configuration, the condition of the subject at the second time point is appropriately determined based on the subject's condition at the first time point, so that the subject's vital information at each time point during a specified period can be appropriately determined to be good or bad.

[0011] In addition, in the vital information acquisition system of the present invention, the first time point may be at least one of the first time point among the multiple time points and the time point among the multiple time points immediately preceding the second time point when used as a reference. In the above configuration, the condition of the subject at the second time point is determined based on the subject's condition at the first time point among multiple time points, or the first time point immediately preceding the second time point, so that the condition of the subject's vital information at each time point during a specified period can be more appropriately determined.

[0012] In addition, in the vital information acquisition system of the present invention, the selection conditions are erased from the storage device between the end of the specified period and the start of a new specified period, and after the start of the new specified period, the information processing device associates the new selection conditions with the subject and stores them in the storage device. In the above configuration, since vital information can be acquired during each specified period using selection conditions appropriate for that period, it is possible to acquire the subject's vital information more appropriately.

[0013] In addition, in the vital information acquisition system of the present invention, the sensor is capable of receiving multiple reflected waves with different traveling directions, for each traveling direction, and outputting a signal corresponding to the reflected waves for each traveling direction, and the information processing device selects, as a selected signal, a signal to be used for acquiring vital information from the signals output from the sensor for each traveling direction, and determines, as selection conditions, conditions for identifying the traveling direction of the reflected waves received by the sensor when outputting the signal selected as the selected signal. With the above configuration, the selection conditions used for acquiring vital information can be appropriately determined.

[0014] In addition, in the vital information acquisition system of the present invention, the sensor is a millimeter wave sensor that outputs a signal corresponding to a reflected wave whose waveform changes depending on the subject's heart rate, and the information processing device acquires information on the subject's blood pressure value as vital information. In the above configuration, blood pressure information can be obtained as vital information based on the heart rate information obtained by the millimeter wave sensor. Effect of the Invention

[0015] According to the present invention, it is possible to realize a vital information acquisition system capable of appropriately acquiring vital information of a subject. [Brief description of the drawings]

[0016] [Figure 1] 1 is a schematic diagram of a first location where a vital information acquisition system according to an embodiment of the present invention is used. [Diagram 2] 2 is a schematic diagram of a second location where a vital information acquisition system according to an embodiment of the present invention is used. FIG. [Diagram 3] 1 is a block diagram showing a vital information acquisition system according to an embodiment of the present invention. [Figure 4] FIG. 13 is a diagram showing an example of measurement information of a subject. [Diagram 5] FIG. 13 is a diagram showing an example of selection conditions for subjects. [Figure 6]FIG. 13 is a diagram showing an example of registration information of a subject. [Figure 7] FIG. 2 is a diagram showing an information processing flow performed at a first location as a processing flow of the vital sign information acquiring system according to the present invention. [Figure 8] FIG. 4 is a diagram showing an information processing flow performed at a second location as a processing flow of the vital sign information acquiring system according to the present invention. [Figure 9] FIG. 1 is a schematic diagram of a conventional vital sign information acquisition system. [Figure 10] 10 is a schematic diagram of a first location where a vital information acquisition system according to another embodiment of the present invention is used. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] <<About one embodiment of the present invention>> Hereinafter, a vital information acquiring system S according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0018] In the following description, "vital information" refers to basic information on a person's physiological state, such as heart rate, pulse rate, respiratory rate, blood flow rate, blood pressure value, sweat amount, sweat rate, skin resistance, and body temperature, and is information that can change depending on a person's activity level and condition. In addition, "vital information" in this specification also includes fluctuations in each of the above-mentioned values, average values, maximum values, minimum values, and distributions of each value in a given time, muscle movements in various parts of the body, facial color (blood color), and muscle movements in the face. Furthermore, "vital information" in this specification also includes information that visualizes vital information, such as a face image and a thermography image that visualizes the surface temperature of each part of the body.

[0019] [Overall configuration of the vital information acquisition system according to this embodiment] The overall configuration of a vital information acquisition system S according to this embodiment will be described with reference to FIGS. In the following description, unless otherwise specified, distance refers to distance in the horizontal direction.

[0020] The vital information acquisition system S is used for the purpose of acquiring vital information of the subject U at multiple points in a predetermined period at the work site where the subject U works, and judging whether the subject U is in good or bad condition. Here, in this embodiment, the predetermined period is one day, and the multiple points in time in the predetermined period are the points in time when the subject U is at the work site, and include at least the point in time when the subject U enters the work site (hereinafter, the entry point). The entry point corresponds to the first point in time of the multiple points in time. Furthermore, among the multiple points in time, the point in time after the entry point is set as a point in time when the subject U is stationary at the work site, such as taking a break, and more specifically, is a point in time when the subject U uses the washroom R in the work site (hereinafter, the hand washing point). The predetermined period is not limited to one day, but may be a unit of a period for performing one work session, and may be set to any length of time (for example, half a day, several days, one week, or one month, etc.).

[0021] Furthermore, the vital information acquisition system S can acquire vital information of the subject U at each of a first point and a second point set at the work site. In this embodiment, the first point is the entrance G of the work site shown in Fig. 1, which is the place where the subject U passes at the time of entry. The second point is the place where the subject U is at the time of washing his / her hands, that is, the washroom R (toilet) shown in Fig. 2, and more specifically, it may be a temporary toilet installed at the work site. The first point and the second point are not limited to the above locations, and may be any location (for example, a break room at a work site, etc.).

[0022] Furthermore, when there are multiple subjects U working at a work site, the vital information acquisition system S acquires vital information of each subject U for each subject U. That is, in this embodiment, at the time each subject U enters, vital information of the subject U at the entrance G is acquired for each subject U, and at the time each subject U washes their hands, vital information of the subject U in the washroom R is acquired for each subject U. In the following, we will assume that the subject U is a male.

[0023] 1 to 3, the vital information acquisition system S includes an entrance measurement device D1, a washroom measurement device D2, and an information processing device 2. The entrance measurement device D1 is a device installed to acquire vital information of a subject U present at an entrance G, and the washroom measurement device D2 is a device installed to acquire vital information of a subject U present in a washroom R.

[0024] The entrance measurement device D1 is installed at a position a predetermined distance away from a predetermined position (hereinafter, first measurement position B1) at the entrance G, and performs measurement operations while the subject U is standing at the first measurement position B1, as shown in Fig. 1. In this embodiment, the subject U always stands at the first measurement position B1 at the time of entry, i.e., when passing through the entrance G, and the entrance measurement device D1 performs measurement operations every time the subject U stands at the first measurement position B1. Although Figure 1 shows only one entrance measurement device D1, two or more entrance measurement devices D1 may be installed at the entrance G so that vital information of multiple subjects U at the entrance G can be obtained at the same time.

[0025] The washroom measuring device D2 is installed at a predetermined position in the washroom R away from a predetermined position (hereinafter, second measurement position B2), and is positioned in front of the subject U while the subject U is standing at the second measurement position B2, and operates to measure the vital information of the subject U. The second measurement position B2 is set in front of the toilet 8 (more specifically, the men's toilet) in the washroom R, and as shown in Fig. 2, the washroom measuring device D2 performs a measurement operation at the time of washing hands, that is, while the subject U is using the toilet 8 (that is, during urination). Although Figure 2 shows only one hand washroom measuring device D2, two or more hand washroom measuring devices D2 may be installed in the hand washroom R so that vital information of multiple subjects U in the hand washroom R can be obtained at the same time.

[0026] Here, the distance from the entrance measurement device D1 to the first measurement position B1 and the distance from the washroom measurement device D2 to the second measurement position B2 are each set to a predetermined distance, specifically, the two distances are set to be equal to each other. By setting the distance between each measurement device and the measurement position to a constant distance in this way, it is possible to more easily identify the appropriate reflection position H described later and to shorten the time required to identify the position. In addition, it is preferable that a mark serving as a landmark is provided on the ground at each of the first measurement position B1 and the second measurement position B2 so that the subject U can easily visually recognize the position.

[0027] 1 to 3, the entrance measurement device D1 and the hand-washing area measurement device D2 each have a tower or pole-shaped appearance and are equipped with various sensors 1, such as a millimeter wave sensor 11, a distance sensor 12, and a temperature sensor 13, a display device 6, and an input device 7. Each of the entrance measurement device D1 and the hand-washing area measurement device D2 has a height of about 1.5 m to 2 m. The millimeter wave sensor 11, distance sensor 12, temperature sensor 13, display device 6, and input device 7 may be easily attached or detached to the hand washroom measurement device D2 by magnetic adhesion or fitting of mounting parts, etc.

[0028] Below, each component of the entrance measurement device D1 and the hand-washing area measurement device D2 will be described.

[0029] (mmWave sensor) The millimeter wave sensor 11 is a non-contact sensor that irradiates the subject U with millimeter waves as measurement signal waves, detects the reflected waves when the irradiated millimeter waves are reflected by the body of the subject U, and outputs a signal corresponding to the detected reflected waves (of the millimeter waves) to the information processing device 2. 1 and 2, in this embodiment, the millimeter wave sensor 11 is used for the purpose of acquiring information on the blood pressure value of the subject U, specifically, it irradiates millimeter waves toward the vicinity of the heart A of the subject U, detects the reflected millimeter waves reflected at the vicinity of the heart A of the subject U, and outputs a signal corresponding to the reflected waves. Here, the waveform of the reflected waves detected by the millimeter wave sensor 11 changes depending on the heart rate. In other words, the millimeter wave sensor 11 outputs a signal corresponding to the reflected waves whose waveform changes depending on the heart rate of the subject U to the information processing device 2.

[0030] Furthermore, in this embodiment, the millimeter wave sensor 11 outputs a signal corresponding to the linear distance X (path length) to the point where the irradiated millimeter waves are reflected, to the information processing device 2. By analyzing the output signal from the millimeter wave sensor 11, it is possible to identify the distance from the heart A of the subject U to the millimeter wave sensor 11 when the subject U is standing at or near the first measurement position B1, or at or near the second measurement position B2, and it is also possible to identify the reception angle C and appropriate reflection position H of the selected reflected wave, which will be described later.

[0031] Furthermore, in this embodiment, the millimeter wave sensor 11 is capable of receiving a plurality of reflected waves with different traveling directions for each traveling direction and outputting a signal according to the reflected waves for each traveling direction. In other words, the traveling direction of the reflected waves is the reception angle C when the millimeter wave sensor 11 receives the reflected waves, and the reception angle C changes depending on the part on the body of the subject U at which the millimeter waves, which are signal waves, are reflected. Furthermore, the part on the body of the subject U at which the millimeter waves are reflected changes depending on the irradiation direction (irradiation angle) when the millimeter wave sensor 11 irradiates the millimeter waves, and the millimeter wave sensor 11 can receive a plurality of reflected waves with different traveling directions by irradiating millimeter waves while changing the irradiation direction.

[0032] Furthermore, in this embodiment, among the signals output from the millimeter wave sensor 11, a signal (hereinafter, a selected signal) output by the millimeter wave sensor 11 by receiving a reflected wave in a selected traveling direction is used to acquire vital information of the subject U, specifically, blood pressure value information. Here, a condition determined for selecting the selected signal (hereinafter, selection condition 4) is a condition for identifying the traveling direction of the reflected wave received by the millimeter wave sensor 11 when outputting the selection signal. Selection condition 4 will be described in detail later.

[0033] As shown in Figures 1 and 2, the millimeter wave sensor 11 is positioned at a predetermined height in the entrance measurement device D1 and the hand washroom measurement device D2, and is also positioned at a predetermined distance in the horizontal direction from the first measurement position B1 or the second measurement position B2. The height at which the millimeter wave sensor 11 is disposed (that is, the installation position in the vertical direction) is the same between the entrance measurement device D1 and the hand-washing area measurement device D2.

[0034] (Distance sensor) The distance sensor 12 measures the distance between the subject U and the body of the subject U while the subject U is standing at or near the first measurement position B1, or at or near the second measurement position B2, and outputs a signal corresponding to the measured distance (hereinafter, distance signal) to the information processing device 2. The distance sensor 12 accurately measures the distance to the body of the subject U (hereinafter, horizontal distance L), and obtains distance information indicating the measurement result, thereby making it possible to determine the deviation (error) between the standing position of the subject U and the first measurement position B1 or the second measurement position B2. As a result, it is possible to more accurately identify the appropriate reflection position H, which will be described later.

[0035] In this embodiment, the distance sensor 12 is also used to detect the target person U when the target person U is standing at or near the first measurement position B1, or at or near the second measurement position B2.

[0036] In this embodiment, the distance sensor 12 is disposed at a predetermined height in the entrance measurement device D1 and the hand-washing area measurement device D2, and is disposed at a predetermined distance in the horizontal direction from the first measurement position B1 or the second measurement position B2, as shown in Figures 1 and 2. In each of the entrance measurement device D1 and the hand-washing area measurement device D2, the position of the distance sensor 12 relative to the millimeter-wave sensor 11 is determined in advance, and in the configuration shown in Figures 1 and 2, the distance sensor 12 is disposed directly below the millimeter-wave sensor 11, more specifically, at a position lowered by a predetermined amount from the millimeter-wave sensor 11, and at the same position as the millimeter-wave sensor 11 in the horizontal direction.

[0037] (Temperature Sensor) The temperature sensor 13 measures the surface temperature of the body of the subject U, that is, the body temperature, and outputs to the information processing device 2 a signal according to the measurement result.

[0038] In this embodiment, the temperature sensor 13 may, for example, measure the temperature of a part of the subject U's body (for example, a part of the subject U's body that is located at the same height as the temperature sensor 13). Alternatively, the temperature sensor 13 may measure the temperature of the entire body or the entire upper body of the subject U. The temperature sensor 13 may also be a thermographic camera, in which case a thermographic image that visualizes the distribution of the surface temperature on the subject U's body can be obtained as the subject U's vital information.

[0039] In this embodiment, the temperature sensor 13 is installed at a predetermined height in the entrance measurement device D1 and the hand washroom measurement device D2, as shown in Figures 1 and 2, and is also positioned at a predetermined distance horizontally from the first measurement position B1 or the second measurement position B2.

[0040] (display device) 1 and 2, the display device 6 is a monitor or display for displaying various information to the subject U at the entrance G or the washroom R. For example, the display device 6 displays vital information of the subject U acquired by the information processing device 2, a judgment result of whether the vital information is good or bad, and the like.

[0041] (Input Device) The input device 7 is used when the subject U inputs information for personal authentication, and acquires the input information. The input information is information input about the subject U, and includes personal information such as the subject U's identification number, name, age, sex, and height, the employer who employs the subject U, the information input location, the information input date and time, and information for personal authentication of the subject U. When the input information of each subject U is input, it is temporarily stored in the storage device 24, and is also input at each of a plurality of points in time.

[0042] The method of inputting the information for personal authentication is not particularly limited, but may be, for example, a method in which the input device 7 is configured with a card reader and the information for personal authentication is read from a recording medium built into a personal authentication card 71 such as an IC card carried by the subject U. Alternatively, the input device 7 may be configured with a camera, which photographs the face of the subject U and uses the photographed image as information for personal authentication.

[0043] [Configuration of information processing device] Next, a configuration of the information processing device 2 of the vital sign information acquisition system S according to this embodiment will be described.

[0044] The information processing device 2 acquires vital information of the subject U based on signals output from various sensors 1 provided in each of the entrance measurement device D1 and the hand-washing area measurement device D2. Specifically, the information processing device 2 acquires the body temperature of the subject U as vital information based on information output from the temperature sensor 13. If the temperature sensor 13 is a thermography camera, the information processing device 2 acquires a thermography image showing the temperature distribution in the body of the subject U as vital information.

[0045] The information processing device 2 also acquires information on the blood pressure value of the subject U as vital information based on the signal output from the millimeter wave sensor 11. As described above, the signal output from the millimeter wave sensor 11 is a signal corresponding to a reflected wave whose waveform changes according to the heart rate of the subject U. The information processing device 2 then identifies the heart rate of the subject U based on the signal output from the millimeter wave sensor 11, and further converts the identified heart rate into a blood pressure value to acquire vital information on the blood pressure value. Note that as a method for identifying the heart rate based on the output signal from the sensor and a method for converting the heart rate information into a blood pressure value, the methods described in the Journal of the Institute of Electronics, Information and Communication Engineers vo1.105 No.6 (2022 / 6) p.477-482 Special Feature, 1 and JP 2023-37552 A can be used.

[0046] Here, the responsiveness of the waveform of the reflected wave (specifically, the phase, frequency (wavelength), amplitude, etc. of the reflected wave) to the heart rate of the subject U is higher as the reflection point of the millimeter wave, which is a signal wave, is closer to the heart A of the subject U. Therefore, from the viewpoint of accurately acquiring blood pressure value information, it is preferable that the millimeter wave sensor 11 receives the reflected millimeter wave reflected from near the heart A of the subject U and acquires vital information, which is blood pressure value information, using the signal output from the millimeter wave sensor 11 at that time. In other words, among the signals output by the millimeter wave sensor 11 for each propagation direction of the reflected wave, the signal output by the millimeter wave sensor 11 when the millimeter wave sensor 11 receives a reflected wave heading from near the heart A of the subject U toward the millimeter wave sensor 11 should be used as the signal used when the information processing device 2 acquires blood pressure value information.

[0047] In consideration of the above, in this embodiment, a signal used to acquire vital information is selected as the selected signal from among the signals output from the millimeter wave sensor 11 for each traveling direction of the reflected wave. The signal used to acquire vital information is a signal suitable for acquiring blood pressure value information, and more specifically, is a signal that contains the most frequency components (e.g., 0.8 Hz to 1.6 Hz) corresponding to the heart rate of the subject U among multiple frequency components contained in the signal.

[0048] In this embodiment, a condition for identifying the traveling direction of a reflected wave received by the millimeter wave sensor 11 when outputting a signal selected as a selection signal (hereinafter also referred to as a selected reflected wave) is determined as selection condition 4. Since the traveling direction of a reflected wave is synonymous with the reception angle C when the millimeter wave sensor 11 receives the reflected wave, selection condition 4 can be said to be a condition for identifying the reception angle C when the millimeter wave sensor 11 receives the selected reflected wave.

[0049] The conditions for identifying the reception angle C of the selected reflected wave are, for example, the distance from the millimeter wave sensor 11 to the body of the subject U and the path length of the selected reflected wave. The distance from the millimeter wave sensor 11 to the body of the subject U is set to the same value as the horizontal distance L from the first measurement position B1 or the second measurement position B2 to the millimeter wave sensor 11. The path length of the selected reflected wave corresponds to the length of a line that is virtually connected between the millimeter wave sensor 11 and a part of the body of the subject U where the millimeter waves are reflected as the selected reflected wave (specifically, a part near the heart A).

[0050] As described above, in this embodiment, the information processing device 2 acquires information on the blood pressure value (vital information) of the subject U based on a selection signal that satisfies the above-mentioned selection condition 4 among the signals output from the millimeter wave sensor 11. Here, the selection condition 4 varies depending on the physical characteristics of the subject U, specifically, height, and is therefore determined for each subject U.

[0051] Furthermore, when the subject U is standing at or near the first measurement position B1, or at or near the second measurement position B2, the information processing device 2 receives a distance signal output from the distance sensor 12. Then, the information processing device 2 acquires information on the blood pressure value (vital information) of the subject U based on the distance signal and the selection signal. This is because the reception angle C of the selected reflected wave changes slightly when the distance from the millimeter wave sensor 11 to the body of the subject U deviates from the set value, i.e., the distance from the first measurement position B1 or the second measurement position B2 to the millimeter wave sensor 11.

[0052] That is, when the subject U is standing near the first measurement position B1 or near the second measurement position B2, the position of the heart A of the subject U as seen by the millimeter wave sensor 11 may be slightly shifted from the position when the subject U is standing at the first measurement position B1 or the second measurement position B2. Therefore, the actual distance to the body of the subject U, i.e., the horizontal distance L, is measured by the distance sensor 12, and the selection condition 4 (specifically, the reception angle C of the selected reflected wave) is corrected according to the measurement result. Then, the information processing device 2 acquires information on the blood pressure value of the subject U based on the selection signal that satisfies the corrected selection condition 4 among the signals output from the millimeter wave sensor 11.

[0053] 3, there is only one information processing device 2, which is a common device for the entrance measurement device D1 and the hand-washing area measurement device D2. That is, in this embodiment, the vital information of the subject U at the entrance G and the vital information of the subject U in the hand-washing area R are acquired by the common information processing device 2. However, this is not limited to this, and a separate information processing device 2 may be provided for each of the entrance measurement device D1 and the hand-washing area measurement device D2.

[0054] 3, the information processing device 2 is composed of a computer and has as its constituent devices a processor 21, a memory 22, a communication interface 23, and a storage device 24, and these devices and equipment are electrically connected via a bus 25. In addition, an operating system (OS) and a program for acquiring vital information are installed as software in the information processing device 2. When the processor 21 operates according to the above-mentioned program, the above-mentioned computer functions as the information processing device 2 and executes a series of processes.

[0055] The processor 21 may be composed of a CPU (Central Processing Unit), an MPU (Micro-Processing Unit), an MCU (Micro Controller Unit), a GPU (Graphics Processing Unit), a DSP (Digital Signal Processor), a TPU (Tensor Processing Unit), an ASIC (Application Specific Integrated Circuit), or the like.

[0056] The memory 22 may be configured with semiconductor memory such as a Read Only Memory (ROM) and a Random Access Memory (RAM).

[0057] The communication interface 23 may be configured by a network interface card, a communication interface board, etc. The information processing device 2 communicates with each of the constituent devices of the entrance measurement device D1 and the hand-washing area measurement device D2 via the communication interface 23, and can transmit and receive signals and information between those devices.

[0058] The storage device 24 may be configured by a flash memory, a hard disc drive (HDD), a solid state drive (SSD), a flexible disc (FD), a magneto-optical disc (MO disc), a compact disc (CD), a digital versatile disc (DVD), a secure digital card (SD card), a universal serial bus memory (USB memory), etc. The storage device 24 may be built in a computer configuring the information processing device 2, may be attached to the computer main body in an external form, or may be configured by an external computer (e.g., a database server) connected to the computer main body so as to be able to communicate with it.

[0059] The storage device 24 stores the input information, measurement information 3, selection conditions 4, registration information 5, and previously acquired vital information of the subject U in association with the subject U. The previously acquired vital information refers to vital information acquired at multiple points in time in a day, specifically, at points in time of entry and hand washing that belong to the same day, before the current time, and during a predetermined period of time before the current time.

[0060] 4, the measurement information 3 is information measured on the subject U, including vital information, and is detected by various sensors 1 and acquired by the information processing device 2. The measurement information 3 includes information such as the subject U's identification number, the information acquisition location, the information acquisition date and time, various vital information, and various distance information. The measurement information 3 is generated at each of multiple points in a day, and more specifically, is generated each time vital information is measured.

[0061] 5, the selection condition 4 is a condition in which optimal information is selected from the measurement information 3. The selection condition 4 includes the linear distance X from the heart A to the millimeter wave sensor 11, that is, the path length of the selected reflected wave. Note that the selection condition 4 may include information determined according to the linear distance X, specifically, the receiving angle C and the appropriate reflection position H of the selected reflected wave. The selection condition 4 is determined for each of multiple subjects U working at the work site, and is stored in association with the subject U (more specifically, the identification number of the subject U).

[0062] The selection condition 4 is determined when the vital information of the subject U is acquired by the entrance measurement device D1 while the subject U is at the entrance G. That is, when the subject U enters the work site, the selection condition 4 to be applied to the subject U is determined and stored in the storage device 24 in association with the subject U. In addition, together with the determined selection condition 4, the horizontal distance L measured by the distance sensor 12 at the time when the vital information of the subject U is acquired by the entrance measurement device D1, i.e., the distance from the subject U to the distance sensor 12, is stored in association with the subject U in the storage device 24 (see FIG. 5).

[0063] 6, the registration information 5 includes personal information such as the subject U's identification number, name, age, sex, and height, the employer who employs the subject U, and other information for personal authentication of the subject U. The registration information 5 may also include criteria information that serves as a standard for determining whether the vital information is good or bad. This criteria information is generated based on the measured vital information of each subject U, i.e., the measurement information 3, and is generated for each subject U.

[0064] In this embodiment, the path length of the selected reflected wave described above, i.e., the straight-line distance X (or reception angle C) between the part of the subject U's body where the millimeter wave is reflected as the selected reflected wave and the millimeter wave sensor 11, is determined as the selection condition 4 and is stored in the storage device 24 in association with the subject U.

[0065] When acquiring information on the blood pressure value of the subject U, the information processing device 2 reads out the selection condition 4 for the subject U from the storage device 24, and acquires a selection signal that satisfies the selection condition 4 from among the signals output from the millimeter wave sensor 11. At this time, the information processing device 2 identifies the appropriate reflection position H.

[0066] The proper reflection position H is a position for normally acquiring vital information, a position where the millimeter waves irradiated from the millimeter wave sensor 11 are reflected as selected reflected waves, specifically, a position corresponding to the heart A of the subject U. When the subject U is standing at the first measurement position B1 or the second measurement position B2, a position away from the receiving unit of the millimeter wave sensor 11 by a length corresponding to the path length of the selected reflected wave becomes the proper reflection position H. To explain in more detail, if the path length of the selected reflected wave is a straight-line distance X and the distance (horizontal distance) from the millimeter wave sensor 11 to the first measurement position B1 or the second measurement position B2 is L, in a right triangle having a hypotenuse of length L with the position of the millimeter wave sensor 11 as one end and an adjacent side (a side other than the hypotenuse) of length L with the millimeter wave sensor 11 as one end, the other end position of the hypotenuse corresponds to the proper reflection position H.

[0067] By identifying the proper reflection position H, the information processing device 2 can acquire a selection signal that satisfies the selection condition 4 from among the signals output from the millimeter wave sensor 11. Specifically, the signal that is output when the millimeter wave sensor 11 receives a reflected wave reflected at the proper reflection position H (in other words, a signal that is output when a millimeter wave is irradiated toward the proper reflection position H and the reflected wave is received) is acquired as the selection signal.

[0068] In this embodiment, the selection conditions 4 and the registered information 5 (hereinafter, judgment criteria information) used as the criteria for judging whether the vital information is good or bad are updated every day. Specifically, at least a part of the selection conditions 4 and judgment criteria information stored in the storage device 24 is erased when the working hours (working hours) at the work site end, the day ends, and the working hours start the next day (a new specified period). Then, when the subject U arrives at the work site on the next day and the vital information of the subject U for that day is acquired at the entrance G, new selection conditions 4 and judgment criteria information are determined for the subject U, and these are associated with the subject U and stored in the storage device 24.

[0069] The procedure for determining selection condition 4 will be described below. Among the signals output from the millimeter wave sensor 11 for each traveling direction of the reflected wave, the information processing device 2 selects, as the selected signal, a signal used for acquiring vital information, i.e., a signal suitable for acquiring blood pressure value information, more specifically, a signal that contains more frequency components corresponding to the heart rate of the subject U than other frequency components. Then, in outputting the signal selected as the selected signal, the information processing device 2 determines, as selection condition 4, a condition for identifying the traveling direction of the reflected wave received by the sensor 1 (selected reflected wave), specifically, the path length of the selected reflected wave.

[0070] Furthermore, in this embodiment, the information processing device 2 acquires vital information of the subject U at multiple points in a day, specifically, at the time of entry and one or more hand washing points belonging to the same day. Furthermore, at each point in time, the information processing device 2 acquires information on the blood pressure value of the subject U as vital information, based on a selection signal that satisfies the selection condition 4 associated with the subject U. The acquired vital information is associated with the subject U and stored in the storage device 24.

[0071] In addition, in this embodiment, the information processing device 2 judges whether the vital information of the subject U acquired at the second time point is good or bad based on the vital information of the subject U acquired at the first time point among the multiple time points in one day. Here, the first time point and the second time point are relative concepts, and among the two time points included in the multiple time points, the earlier time point corresponds to the first time point, and the later time point corresponds to the second time point. More specifically, in this embodiment, the entry time point, which is the first time point among the multiple time points, and the immediately preceding hand washing time point when the second or subsequent hand washing time point (second time point) among the multiple time points is used as a reference, correspond to the first time point. However, this is not limited to this, and either the entry time point or the immediately preceding hand washing time point may be the first time point.

[0072] There is no particular limitation on the method of determining whether the vital information acquired at the second time point is good or bad based on the vital information acquired at the first time point. For example, a threshold may be set according to the vital information acquired at the first time point, and the vital information acquired at the second time point may be compared with the threshold to determine whether the vital information is good or bad. Alternatively, the vital information may be continuously acquired at the second time point for a predetermined time (e.g., 30 seconds), and the average value of the vital information may be compared with the threshold to determine whether the vital information at the second time point is good or bad. Alternatively, a numerical range may be set according to the vital information acquired at a first time point, and the quality of the vital information acquired at a second time point may be determined by determining whether the numerical value of the vital information is within the above numerical range.

[0073] The judgment result regarding the quality of the vital information is displayed on the display device 6 by the information processing device 2. The subject U can check the judgment result displayed on the display device 6. The judgment result is also transmitted to a terminal (not shown) used by the work manager. This allows the work manager to check the quality of the vital information of each subject U during working hours each day. Then, for subjects U whose vital information is judged to be normal, work is permitted to be performed and continued, and for subjects U whose vital information is judged to be abnormal, work is stopped or interrupted.

[0074] Furthermore, in this embodiment, the subject U inputs information for personal authentication while at the entrance G or the washroom R, and the input device 7 acquires the input information and transmits the input information to the information processing device 2. Then, the information processing device 2 compares the input information received from the input device 7 with the registration information 5 of the subject U stored in the storage device 24, and specifically, acquires the vital information of the subject U when the contents of the input information and the registration information 5 match. Thus, in this embodiment, personal authentication of the subject U is performed when acquiring the vital information of the subject U. Then, when it is confirmed that the subject U is a registered worker, the information processing device 2 applies the selection condition 4 associated with the subject U, and acquires the vital information of the subject U, specifically, blood pressure information, based on the selection signal that satisfies the selection signal.

[0075] [Information processing flow of the vital information acquisition system according to this embodiment] Next, an information processing flow related to vital information acquisition will be described as an information processing flow by the information processing device 2 of the vital information acquisition system S according to this embodiment. The information processing flow is roughly divided into a first measurement processing flow shown in FIG. 7 and a second measurement processing flow shown in FIG. 8. The first measurement processing flow is performed when the subject U passes through the entrance G upon entering the work site. The second measurement processing flow is performed when the subject U uses the washroom R in the work site. The first measurement processing flow is performed only once a day when passing through the entrance G, whereas the second measurement processing flow is performed each time the subject U uses the washroom R after entering the work site. Hereinafter, the first measurement process flow and the second measurement process flow will be described respectively.

[0076] (First measurement process flow) The first measurement process flow is executed for the purpose of acquiring vital information of the subject U before work and judging whether the vital information is good or bad when the subject U passes through the entrance G. In the first measurement process flow, the information processing device 2 executes each step of FIG.

[0077] Specifically, while the subject U is at the entrance G and standing at or near the first measurement position B1, the distance sensor 12 detects the distance to the subject U and outputs a signal corresponding to the detected distance (distance signal) to the information processing device 2. Then, when the information processing device 2 receives the distance signal and recognizes that the subject U is at or near the first measurement position B1, this triggers the start of the first measurement processing flow.

[0078] In the first measurement process flow, first, the subject U operates the input device 7 to input information for personal authentication, and the information processing device 2 acquires the input information (S001). The information processing device 2 compares the acquired input information about the subject U with the registered information 5 about the subject U stored in the storage device 24 (S002). Then, if the content of the input information matches the content of the registered information 5, the process proceeds to the next step. Note that, if the content of the input information does not match the content of the registered information 5, the subject U may be prompted to register information for personal authentication.

[0079] Thereafter, the information processing device 2 receives output signals from the various sensors 1 provided in the entrance measurement device D1 to acquire vital information of the subject U. Specifically, the information processing device 2 receives an output signal from the temperature sensor 13 to acquire vital information related to the body temperature of the subject U (S003). The information processing device 2 also determines whether the body temperature indicated by the acquired vital information is within a normal range (S004), and if the body temperature of the subject U is not within the normal range, causes the display device 6 to display a warning message or the like (S005).

[0080] On the other hand, if the body temperature of the subject U is within the normal range or after step S005, the information processing device 2 receives the signal output from the millimeter wave sensor 11 and acquires vital information related to the heart rate of the subject U (S006). At this time, the information processing device 2 selects, as the selected signal, a signal suitable for acquiring blood pressure value information, more specifically, a signal that contains more frequency components corresponding to the heart rate of the subject U than other frequency components, from among the signals output from the millimeter wave sensor 11 for each propagation direction of the reflected wave (S007).

[0081] Then, the information processing device 2 determines the conditions for identifying the reflected wave received by the millimeter wave sensor 11 when outputting the signal selected as the selected signal, i.e., the traveling direction of the selected reflected wave, specifically, the path length (linear distance X) of the selected reflected wave, the receiving angle C, the appropriate reflection position H, etc., as selection conditions 4 (S008). The determined selection conditions 4 are associated with the subject U and stored in the storage device 24.

[0082] In addition, while receiving the output signal from the millimeter wave sensor 11, the information processing device 2 also receives the distance signal output from the distance sensor 12, obtains the horizontal distance L indicated by the distance signal, i.e., the distance from the subject U to the distance sensor 12, and stores it in the memory device 24 in association with the subject U (S009).

[0083] Thereafter, the information processing device 2 acquires information on the blood pressure value of the subject U based on a signal that satisfies the above-mentioned selection condition, i.e., a selection signal, among the signals output from the millimeter wave sensor 11 (S010). Specifically, the information processing device 2 converts the value of the heart rate specified from the selection signal into blood pressure value information. In this embodiment, the information processing device 2 continues to perform step S010 for 30 seconds, acquires vital information on blood pressure values ​​for 30 seconds, and calculates the average value of blood pressure values ​​for 30 seconds (S011). Then, the information processing device 2 determines whether the calculated average value is within a predetermined range (S012), and if the average value is not within the predetermined range, causes the display device 6 to display a warning message or the like (S013). The above-mentioned predetermined range may be set to a numerical range appropriate for determining whether the blood pressure value is normal.

[0084] On the other hand, if the average value is within the specified range, or after step S013, the information processing device 2 stores the vital information of the subject U acquired in the steps up to this point in the storage device 24 as registration information 5 in association with the subject U (S014). When the above series of steps are completed, the first measurement process flow ends.

[0085] (Second measurement process flow) The second measurement process flow is executed for the purpose of acquiring vital information of the subject U while he / she is working and judging the condition of the vital information at the time when the subject U uses the washroom R. The flow of the second measurement process flow is generally common to the first measurement process flow, and in the second measurement process flow, the information processing device 2 executes each step of FIG.

[0086] Specifically, while the subject U is in the washroom R and standing at or near the second measurement position B2, the distance sensor 12 detects the distance to the subject U and outputs a signal corresponding to the detected distance (distance signal) to the information processing device 2. When the information processing device 2 receives the distance signal and recognizes that the subject U is at or near the second measurement position B2, this triggers the start of the second measurement processing flow.

[0087] In the second measurement process flow, first, the subject U operates the input device 7 to input information for personal authentication, and the information processing device 2 acquires the input information (S021). The information processing device 2 compares the acquired input information about the subject U with the registered information 5 about the subject U stored in the storage device 24 (S022). Then, if the content of the input information matches the content of the registered information 5, the process proceeds to the next step. If the content of the input information does not match the content of the registered information 5, the subject U may be prompted to register information for personal authentication.

[0088] Thereafter, the information processing device 2 receives output signals from the various sensors 1 provided in the hand-washing area measuring device D2 and acquires vital information of the subject U. Specifically, the information processing device 2 receives an output signal from the temperature sensor 13 and acquires vital information related to the body temperature of the subject U (S023). The information processing device 2 also determines whether the body temperature indicated by the acquired vital information is within a normal range (S024), and if the body temperature of the subject U is not within the normal range, causes the display device 6 to display a warning message or the like (S025).

[0089] On the other hand, if the body temperature of the subject U is within the normal range, or after step S025, the information processing device 2 reads out the selection condition 4 associated with the subject U from the storage device 24. The information processing device 2 also receives the distance signal output from the distance sensor 12, and acquires the horizontal distance L indicated by the distance signal, i.e., the distance from the subject U to the distance sensor 12 (S026).

[0090] Then, the information processing device 2 receives the signal output from the millimeter wave sensor 11 and acquires vital information related to the heart rate of the subject U (S027). At this time, the information processing device 2 identifies a signal (selected signal) selected based on the selection condition 4 and the horizontal distance L from among the signals output from the millimeter wave sensor 11.

[0091] Specifically, the receiving angle C of the selected reflected wave is corrected according to the horizontal distance L, the horizontal distance L measured at the entrance G is set as L1, the horizontal distance L measured at the restroom R is set as L2, and the receiving angle C stored as the selection condition 4 is corrected by L1 and L2. The information processing device 2 identifies a signal (selected signal) that satisfies the corrected selection condition 4. Then, the information processing device 2 acquires the heart rate value of the subject U based on the selection signal. Furthermore, the information processing device 2 converts the heart rate value into a blood pressure value (S028).

[0092] In this embodiment, the information processing device 2 continues to perform step S028 for 30 seconds, acquires vital information of blood pressure values ​​for 30 seconds, and calculates the average blood pressure value for 30 seconds (S029). The information processing device 2 then determines whether the calculated average value is within a predetermined range (S030), and if the average value is not within the predetermined range, causes the display device 6 to display a warning message or the like (S031). The above-mentioned predetermined range may be set to a numerical range appropriate for determining whether the blood pressure value is normal.

[0093] On the other hand, if the average value is within the specified range, or after step S031, the information processing device 2 stores the vital information of the subject U acquired in the steps up to this point in the storage device 24 as registration information 5 in association with the subject U (S032). When the above series of steps are completed, the second measurement process flow ends.

[0094] [Effectiveness of the vital information acquisition system according to this embodiment] The effectiveness of the vital information acquisition system S according to this embodiment will be described. When obtaining blood pressure values ​​as vital information of a subject U, as shown in FIG. 9, millimeter waves are irradiated from a millimeter wave sensor 11 to the subject U, the heart rate is calculated from the millimeter waves reflected by the heart A of the subject U, and the blood pressure value is obtained (converted) from the heart rate.

[0095] On the other hand, with conventional systems, it has been difficult to accurately identify the position of subject U and the position of heart A, and accurately irradiate millimeter waves to the position of heart A of subject U. As a result, there is a possibility that the vital information of subject U, particularly blood pressure value, cannot be accurately acquired, and there is a risk that it is not possible to appropriately judge whether the condition of subject U is good or bad based on the vital information.

[0096] In contrast, in the vital information acquisition system S of the present embodiment, as described above, the selection condition 4 for selecting a signal to be used for acquiring vital information from among the signals output from the millimeter wave sensor 11 is stored in association with the subject U. Then, when acquiring vital information related to the blood pressure value of the subject U, a signal when a millimeter wave reflected at the position of the heart A of the subject U is received is selected based on the selection condition 4 associated with the subject U, and the vital information is acquired based on the selected signal. This allows the information processing device 2 to accurately acquire vital information related to the blood pressure value of the subject U.

[0097] Furthermore, in the vital information acquisition system S of this embodiment, when acquiring vital information, input information about the subject U is compared with the registered information 5 about the subject U, and if the contents of both pieces of information match, the vital information of the subject U is acquired. In this way, since personal authentication (identity verification) of the subject U is performed before the vital information of the subject U is acquired, it is possible to ensure the authenticity that the acquired vital information is that of the subject U.

[0098] Furthermore, in the vital information acquisition system S of this embodiment, information on the horizontal distance L from the distance sensor 12 to the body of the subject U is acquired, and a signal (selection signal) to be used for acquiring the vital information is selected based on the acquired information on the horizontal distance L. As a result, even if the subject U should have been standing at the first measurement position B1 or the second measurement position B2 but is standing at a position shifted from the first measurement position B1 or the second measurement position B2, it is possible to acquire the vital information of the subject U based on a signal obtained when a millimeter wave reflected by the heart A of the subject U is received. As a result, it is possible to acquire the vital information of the subject U more appropriately (accurately).

[0099] Furthermore, in the vital information acquisition system S of this embodiment, the quality of the vital information of the subject U acquired at a second time point after the first time point is determined based on the vital information of the subject U at a first time point. This makes it possible to determine whether the current condition of the subject U is good or bad by comparing it with the past condition of the subject U. As a result, it is possible to determine whether the vital information of the subject U at each time point is good or bad based on the condition of the subject U at an earlier time point on the same day.

[0100] In addition, in the vital information acquisition system S of this embodiment, the selection conditions 4 are erased when a day, which is a predetermined period, ends, and when a new predetermined period begins, new selection conditions 4 are stored in the storage device 24. That is, the selection conditions 4 are updated every day. This makes it possible to acquire vital information during each predetermined period using the selection conditions 4 that are appropriate for the condition of the subject U on that day.

[0101] [Other embodiments of the present invention] Although one embodiment of the vital information acquisition system of the present invention has been described above, the above embodiment is merely an example for facilitating understanding of the present invention and does not limit the present invention. In other words, the present invention may be modified or improved without departing from the spirit of the present invention. In addition, the present invention naturally includes its equivalents.

[0102] In the above-described embodiment, the location where the vital information of the subject U is acquired is a washroom R for men to urinate, but the present invention is not limited to this. For example, as shown in Fig. 10, a washroom measurement device D3 capable of acquiring the vital information of the subject U may be installed in the washroom of the washroom R, and the vital information of the subject U may be acquired in the washroom of the washroom R. As a result, the washroom measurement device D3 differs from the washroom measurement device D2 equipped with a toilet 8 for men to urinate, and can acquire vital information even when the subject U is female.

[0103] In the above-described embodiment, the millimeter wave sensor 11 outputs a signal corresponding to the heart rate of the subject U, but this is not limited to this. For example, the millimeter wave sensor 11 may output to the information processing device 2 a signal corresponding to the respiration of the subject U or a signal corresponding to information related to other physiological conditions.

[0104] In the above-described embodiment, the horizontal distance L from the subject U is measured by the distance sensor 12 of the entrance measurement device D1 and the hand-washing area measurement device D2, but the present invention is not limited to this. For example, the entrance measurement device D1 and the hand-washing area measurement device D2 do not need to be equipped with the distance sensor 12. Even in this case, the first measurement position B1 or the second measurement position B2 where the subject U is located is fixed, so the information processing device 2 can grasp the horizontal distance L from the subject U.

[0105] In the above embodiment, the case where the working subject U, i.e., the subject whose vital information is to be managed, is one subject U, has been described as an example, but the present invention is not limited to this. For example, the vital information acquisition system S may simultaneously acquire the vital information of two or more subjects U. [Explanation of symbols]

[0106] S Vital Signs Acquisition System S1 Vital Information Acquisition System A. Heart B1 1st measurement position B2 2nd measurement position C Receiving angle D1 Entrance measuring device D2 Washroom measuring device D3 Washroom Measuring Device G Entrance H Proper reflection position L horizontal distance R Washroom U Target Audience X straight line distance (path length) 1 Sensor 2. Information processing equipment 3. Measurement Information 4. Selection criteria 5. Registration Information 6 Display device 7 Input Devices 8. Toilet 11 Millimeter wave sensor 12 Distance Sensor 13 Temperature Sensor 21 Processors 22 Memory 23 Communication Interface 24 Storage device 25 Bus 71 Personal Identification Card

Claims

1. a sensor that emits a signal wave toward a body of a subject, receives a reflected wave of the signal wave reflected by the body of the subject, and outputs a signal corresponding to the reflected wave; an information processing device that acquires vital information of the subject based on a selection signal that satisfies a selection condition among the signals output from the sensor; A storage device that stores the selection conditions in association with the subject, A vital information acquisition system, wherein the selection condition is a condition for identifying a direction of travel of the reflected wave received by the sensor when the sensor outputs the selection signal.

2. The information processing device includes: Matching the registration information registered for the subject with the input information input for the subject; The vital information acquiring system according to claim 1 , wherein the vital information of the subject is acquired when the content of the input information matches the content of the registration information.

3. a distance sensor that outputs a distance signal according to a distance to the body of the subject; A position of the distance sensor relative to the sensor is determined in advance, The vital information acquiring system according to claim 1 , wherein the information processing device acquires the vital information of the subject based on the distance signal and the selection signal.

4. The information processing device includes: Acquiring vital information of the subject at each of a plurality of time points during a predetermined period; The vital information acquisition system of claim 1, wherein the vital information of the subject acquired at a second point in time after the first point in time is judged to be good or bad based on the vital information of the subject acquired at a first point in time among the multiple points in time.

5. 5. The vital information acquisition system of claim 4, wherein the first point in time is at least one of an initial point in time among the plurality of points in time and a point in time among the plurality of points in time immediately preceding the second point in time.

6. The selection conditions are erased from the storage device during the period from the end of the predetermined period to the start of a new predetermined period; The vital information acquiring system according to claim 4 , wherein after a new predetermined period starts, the information processing device stores new selection conditions in the storage device in association with the subject.

7. The sensor is capable of receiving a plurality of reflected waves having different traveling directions, for each traveling direction, and outputting the signal corresponding to the reflected waves for each traveling direction, 2. The vital information acquisition system of claim 1, wherein the information processing device selects, as the selected signal, the signal to be used for acquiring the vital information from among the signals output from the sensor for each direction of travel, and determines, as the selection condition, a condition for identifying the direction of travel of the reflected wave received by the sensor when outputting the signal selected as the selected signal.

8. the sensor is a millimeter wave sensor that outputs the signal corresponding to the reflected wave, the waveform of which changes in accordance with the heart rate of the subject; The vital information acquiring system according to claim 1 , wherein the information processing device acquires information on a blood pressure value of the subject as the vital information.

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