JP2007143959A - Biological information monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To monitor biological information by acquiring biological information stably from a measurement device when the movements of a subject are complicated, and the orientation of the subject always changes. <P>SOLUTION: A biological information monitoring system is configured by a sensor unit 2 which is attached to a prescribed place on a body surface of the subject 4 exercising in a prescribed region, includes a sensor for detecting the biological information of the subject, and wirelessly outputs sensing signals based on the detected data by the sensor, a radio repeater 3 which includes a nondirectional transmitting and receiving antenna 31 attached to the subject 4, receives the sensing signals wirelessly outputted from the sensor unit by using the nondirectional transmitting and receiving antenna, and amplifies the sensing signals to wirelessly transmits them by using the nondirectional transmitting and receiving antenna, and a center device 1 which is provided outside the prescribed region and receives the sensing signals transmitted wirelessly from the radio repeater to determine the condition of the subject during the exercise from the sensing signals. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a biological information monitoring system that monitors biological information such as an electrocardiogram and body temperature of a subject.

In Patent Document 1, a measuring device (biological information measuring device and relay device) for detecting biological information of a subject is applied to, for example, the subject's neck, wound around a wrist, and attached to a waist belt. A biological information management system is disclosed in which a biological information measured in a home is transmitted to an external management department via a repeater (terminal device) via a public line or the like by being attached to or carried by a subject, such as in .
JP 2002-45338 A

  In the biological information management system disclosed in Patent Document 1, the terminal device that is a relay is fixed in a room or the like, the subject is within the range received by the relay, and biological information is measured and transmitted. The

  Therefore, in a system using such a repeater, in order to obtain biological information of a subject such as a sports player who performs various actions (rotation, falling, etc.) in the ground, However, since the orientation of the subject with respect to the repeater always changes, it is impossible to stably acquire biological information from the measuring instrument.

  The present invention has been made in view of the above points, and even when the movement of the subject is complicated and the orientation of the subject constantly changes, biological information can be stably acquired from the measuring instrument. Another object is to provide a biological information monitoring system capable of monitoring biological information.

  A first aspect of the biological information monitoring system of the present invention includes a sensor that is attached to a predetermined location on the body surface of the subject and detects the biological information of the subject, and the detection data of the sensor includes Including a sensor unit that wirelessly outputs a sensing signal based on the omnidirectional antenna mounted on the subject, and receives a sensing signal that is wirelessly output from the sensor unit using the omnidirectional antenna. A wireless repeater that amplifies and wirelessly transmits using the omnidirectional antenna, and a sensing signal that is wirelessly transmitted from the wireless repeater provided in a predetermined area is received, and based on the sensing signal And a center device for determining the state of the subject during the exercise.

  According to a second aspect of the biological information monitoring system of the present invention, in the biological information monitoring system according to the first aspect, the wireless repeater is mounted on the shoulder or head of the subject. .

  According to a third aspect of the biological information monitoring system of the present invention, in the biological information monitoring system according to the first aspect, a plurality of wireless repeaters are mounted at a plurality of positions of the subject. .

  According to a fourth aspect of the biological information monitoring system of the present invention, in the biological information monitoring system according to the third aspect, the wireless repeater is mounted on the chest and back of the subject.

  According to a fifth aspect of the biological information monitoring system of the present invention, in the biological information monitoring system according to any one of the first to fourth aspects, the center device wirelessly transmits a control signal for controlling the sensor unit. The wireless repeater receives the control signal from the center device using the omnidirectional antenna, amplifies it, wirelessly transmits the signal to the sensor unit using the omnidirectional antenna, The sensor unit receives the control signal wirelessly transmitted from the wireless repeater and operates according to the control signal.

  According to a sixth aspect of the biological information monitoring system of the present invention, in the biological information monitoring system according to any one of the first to fifth aspects, the omnidirectional antenna of the wireless repeater is a whip antenna. And

  According to the present invention, even when the movement of the subject is complicated and the orientation of the subject constantly changes, it is possible to stably acquire biological information from the measuring instrument and monitor the biological information. A possible biological information monitoring system can be provided.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

[First Embodiment]
FIG. 1 is a diagram showing a configuration of a biological information monitor system according to the first embodiment of the present invention. In the present embodiment, biological information of a subject who moves in a predetermined area such as a stadium or a ground is monitored, and the state of the subject during exercise is determined.

  This biological information monitoring system includes a center device 1, a sensor unit 2, and a wireless repeater 3.

  Here, the center apparatus 1 is installed in a medical facility such as a stadium rescue room or a hospital, for example.

  Moreover, the sensor unit 2 is modularized, and as shown in FIG. 2A, is attached to a predetermined location (here, the chest) of the body surface of the subject 4 to be monitored. Here, as an example of the mounting, an adhesive double-sided adhesive tape is used. The acrylic double-sided adhesive tape is less prone to irritation such as a rash on the skin of the subject 4, and when the sensor unit 2 is peeled off from the subject 4, an adhesive paste adheres to the surface of the sensor unit 2 or the subject 4. It has the advantage that it is difficult and the adhesive layer can be made thin.

  Similar to the sensor unit 2, the wireless repeater 3 is attached to a predetermined location (here, a shoulder) such as on the clothes of the subject 4 as a monitoring target. The wireless repeater 3 wirelessly relays between the center device 1 and the sensor unit 2 via wireless networks 51 and 52. In other words, as described above, since the sensor unit 2 is adapted to be worn on the chest of the subject 4, it is desirable to transmit the sensing signal with a very weak output, and depending on the orientation of the body. Since the radio signal is blocked by the body of the subject 4, the sensing signal cannot reach the remote center device 1. Therefore, in the present embodiment, the wireless repeater 3 receives a sensing signal wirelessly transmitted from the sensor unit 2 with an extremely weak output via the wireless network 52, and transmits it via the wireless network 51 with a larger output. Wirelessly transmitted to the center device 1.

  Here, as the wireless network 51 between the wireless repeater 3 and the center device 1, for example, a short-range data communication system such as BlueTooth (registered trademark), a wireless LAN (Local Area Network), a PHS (Personal Handyphone System) ) (Registered trademark), mobile phone systems, etc. are used. In addition, as the wireless network 52 between the wireless repeater 3 and the sensor unit 2, for example, a weak power wireless communication method such as BlueTooth (registered trademark) is used. Of course, even a method similar to that of the wireless network 51 can be used if communication is performed with a very weak output.

  Hereinafter, the details of each unit will be described with reference to FIG.

  The center device 1 includes an antenna unit 11, a signal distribution unit 12, a reception unit 13, a transmission unit 14, a sensor data collection processing unit 15, and a sensor control unit 16.

  Here, the antenna unit 11 has a transmission antenna function for transmitting the control signal generated by the sensor control unit 16 and a reception antenna function for receiving a sensing signal from the sensor unit 2 that relays the wireless repeater 3. The function switching is performed by a signal distribution unit 12 such as a circulator connected to the antenna unit 11.

  The receiving unit 13 receives and demodulates a radio signal transmitted from the sensor unit 2 via the radio repeater 3 and the antenna unit 11, and outputs a sensing signal obtained by this demodulation to the sensor data collection processing unit 15. The transmission unit 14 modulates the control signal output from the sensor control unit 16 and converts it into a radio signal, and transmits the radio signal from the antenna unit 11 to the repeater, that is, the sensor unit 2.

  The sensor data collection processing unit 15 is a part that performs a predetermined calculation on the received sensing signal to determine the state of the subject 4, for example, an abnormality of the electrocardiogram. What calculation is performed depends on the monitoring purpose.

  The sensor control unit 16 includes, for example, a CPU (Central Processing Unit) and a DSP (Digital Signal Processor), and outputs a control signal including a command related to the start of sensing by the sensor unit 2 and a sensing cycle.

  On the other hand, as shown in FIG. 2A, the sensor unit 2 includes an antenna unit 21, a sensor signal transmission / reception unit 22, a sensor drive control unit 23, a sensor main body 24, and a battery 25.

  Here, for example, as shown in FIG. 3, the sensor main body 24 includes an electrocardiogram sensor 241 that acquires the electrocardiogram data of the subject 4, an acceleration sensor 242 that detects the lateral movement of the subject 4, and the subject It comprises a temperature sensor 243 that detects the skin temperature of the person 4. Of course, what kind of sensor is provided is determined by the monitoring purpose of what kind of state of the subject 4 is to be monitored, and the electrocardiogram sensor 241, the acceleration sensor 242, and the temperature sensor 243 are not included. It is not limited.

  The electrocardiogram sensor 241 is connected to an electrode clip 6 composed of two electrodes via a cable (not shown). The electrode clip 6 is electrically connected by sandwiching the convex portion of the electrode pad in close contact with the subject 4 and can be detected by the electrocardiogram sensor 241. A conductive adhesive tape is affixed to the back surface of the electrode pad, that is, the surface in contact with the skin of the subject 4. By attaching the electrode pad to the subject 4, the conductive adhesive tape is interposed therebetween. ECG data can be acquired.

  On the other hand, as shown in FIG. 3, the sensor drive control unit 23 includes a CPU (central processing unit) 231, a storage unit 232, a control unit crystal oscillator 233, AD conversion units 234, 235, 236, and SPI ( Server programming interface) 237.

  The control unit crystal oscillator 233 generates a clock signal having a predetermined period based on the clock control signal of the CPU 231. The storage unit 232 stores a program executed by the CPU 231. The CPU 231 drives and controls the sensor signal transmission / reception unit 22 of FIG. 2A including the electrocardiogram sensor 241, the acceleration sensor 242, and the temperature sensor 243 of the sensor body 24, and is sent from the center device 1 described above. The contents of sensing start and end and other commands are stored in a memory (not shown). Thereafter, a clock control signal is generated based on the stored command and the setting data stored in the storage unit 232, and is output to the control unit crystal oscillator 233. Based on the clock control signal, a clock signal generated by the control unit crystal oscillator 233 generates a signal related to the start and end of sensing as a drive signal.

  The CPU 231 outputs an electrocardiogram sensor control signal for driving the electrocardiogram sensor 241 to the electrocardiogram sensor 241. The ECG sensor control signal includes, in addition to commands such as the measurement start time and end time of the ECG sensor 241, a band signal that determines the band of a variable bandpass filter (not shown), a gain signal that determines the gain of a variable gain amplifier (not shown), There is a switching signal for switching between acquisition of a sensing signal during measurement and acquisition of a sensing signal during baseline waveform measurement.

  The AD conversion unit 234 converts detection data from the electrocardiogram sensor 241 into a digital signal, and outputs it as a sensing signal from the CPU 231 via the SPI 237.

  The AD conversion unit 235 converts acceleration data, which is detection data of the acceleration sensor 242 driven by a standby signal from the CPU 231, into a digital signal. The converted acceleration data is sent from the CPU 231 via the SPI 237 as a sensing signal. Is output. Similarly, the AD conversion unit 236 converts temperature data, which is detection data of the temperature sensor 243, into a digital signal, and the converted temperature data is output as a sensing signal from the CPU 231 via the SPI 237. The acceleration sensor 242 is in an operating state in which sensing is performed when a standby signal supplied from the CPU 231 to the sensor 242 becomes “H” level, and in a non-operating state, that is, a standby state in which power consumption is low when the “L” level is reached. It becomes. The period is based on the command sent from the center apparatus 1 as described above. Further, for example, the acceleration sensor 242 is kept in a standby state so that unnecessary power consumption is not suppressed or an abnormal state in the center device 1 is not discriminated until the subject 4 starts actual exercise. The center device 1 issues a command to

  The battery 25 is made of, for example, a button-type lithium battery, and supplies a DC voltage generated from the battery 25 to the sensor body 24, the sensor drive control unit 23, and the sensor signal transmission / reception unit 22 as drive power. .

  As shown in FIG. 4, the sensor signal transmission unit 22 includes an SPI 2201, a digital signal control unit 2202, a signal modulation unit 2203, a mixing unit 2204, and a power amplification unit 2205 as the configuration of the transmission unit. In addition, as a configuration of the reception unit, a low noise amplification unit 2207, a mixing unit 2208, a signal demodulation unit 2209, a digital signal control unit 2210, and an SPI 2211 are provided. The sensor signal transmission / reception unit 22 further includes a voltage-controlled oscillator 2214 that receives the output of the transmission / reception unit crystal oscillator 2212 via the phase stabilization circuit 2213 and generates a predetermined frequency signal.

  That is, in the sensor signal transmission unit 22, the sensing signal from the sensor drive control unit 23 is taken into the digital signal control unit 2202 via the SPI 2201. Further, the signal modulation unit 2203 performs digital modulation, for example, QPSK (Quadrature Phase Shift Keying) modulation, and the mixing unit 2204 mixes with the output of the voltage controlled oscillator 2214 to convert it into a predetermined format to create sensing data. The generated sensing data is amplified by the power amplification unit 2205 and transmitted from the transmission / reception signal distribution unit 2206 to the wireless repeater 3 via the antenna unit 21.

  Further, when the sensor signal transmitting / receiving unit 22 receives a radio signal transmitted from the center device 1 and relayed by the radio repeater 3 by the antenna unit 21, the sensor signal transmitting / receiving unit 22 receives the signal via the transmission / reception signal distributing unit 2206 and the low noise amplifying unit 2207. To the mixing unit 2208. Here, the radio signal is converted into a predetermined frequency mixed with the output of the voltage controlled oscillator 236, and then digitally demodulated by the signal demodulator 2209. The control signal obtained by this digital demodulation is transmitted from the digital signal controller 2210 via the SPI 2211. To the sensor drive control unit 23.

  As shown in FIG. 2A, the wireless repeater 3 that relays between the center device 1 and the sensor unit 2 having the above-described configuration includes an omnidirectional transmission / reception antenna 31 and a transmission / reception unit 32. . Here, the transmission / reception unit 32 amplifies the sensing signal from the sensor unit 2 received by the omnidirectional transmission / reception antenna 31 from the wireless network 52 and wirelessly transmits the signal from the omnidirectional transmission / reception antenna 31 to the center device 1 by the wireless network 51. To do. In this case, the wireless repeater 3 is between the sensor unit 2 and the wireless repeater 3 (uplink) and between the wireless repeater 3 and the center device 1 (downlink). Interference is prevented by changing the transmission timing. In addition, when there are a plurality of subjects, it is needless to say that it is necessary to further divide the downlink time in order to distribute the downlink timing among the subjects. Similarly, when there are a plurality of subjects, the uplink time is further distributed among the subjects so that the sensing signals of other adjacent subjects are not picked up. There is a need.

  The wireless repeater 3 amplifies the control signal from the center apparatus 1 received by the omnidirectional transmission / reception antenna 31 from the wireless network 51, and wirelessly transmits from the omnidirectional transmission / reception antenna 31 to the sensor unit 2 by the wireless network 52. It also has a function to transmit.

  Although not particularly illustrated, the transmission / reception unit 32 includes a battery such as a button-type lithium battery as a power source. Alternatively, instead of a battery, a circuit that generates power from a radio signal received by the omnidirectional transmitting / receiving antenna 31 may be provided.

  Further, as shown in FIG. 2B, the omnidirectional transmitting / receiving antenna 31 has a directivity of radiated power substantially equal to the entire circumferential direction. For example, as shown in FIG. When the wireless repeater 3 is mounted, good wireless communication with the center device 1 and with the sensor unit 2 is possible regardless of which direction the subject 4 faces. As such an omnidirectional transmitting / receiving antenna 31, for example, a λ / 4 whip antenna as shown in FIG. 2C is well known, and the transmitting / receiving unit 32 is arranged on the base portion. A small wireless repeater 3 can be configured. Further, the omnidirectional transmitting / receiving antenna 31 can be configured by forming a directional antenna in a ring shape with a certain degree of elasticity as shown in FIG. In this case, since the omnidirectional transmission / reception antenna 31 is disposed over substantially the entire circumference of the subject 4 by attaching the ring portion around the waist of the subject 4, the posture of the subject 4 Regardless of the state, good wireless communication with the center device 1 and with the sensor unit 2 becomes possible.

  FIG. 5 is a diagram showing the configuration of the sensor data collection processing unit 15 in the center device 1, and particularly includes a sensing data storage unit 151, an electrocardiogram data determination unit 152, an acceleration sensor data determination unit 153, and body surface temperature determination. A unit 154 and a subject situation determination unit 155.

  As described above, the receiving unit 13 of the center device 1 receives the radio signal transmitted from the sensor unit 2 via the radio repeater 3 and the antenna unit 11, demodulates the signal, and obtains the sensing signal obtained by this demodulation as a sensor. The data is output to the data collection processing unit 15. The sensor data collection processing unit 15 temporarily stores the sensing signal in the sensing data storage unit 151.

  The electrocardiogram data determination unit 152 determines an abnormality of the electrocardiogram based on the electrocardiogram data measured by the electrocardiogram sensor 241 among the sensing signals stored in the sensor data collection processing unit 15. Further, in the acceleration sensor data determination unit 153, based on the acceleration data measured by the acceleration sensor 242 among the sensing signals stored in the sensor data collection processing unit 15, the direction of exercise of the subject 4, Determine fall. Further, the body surface temperature determination unit 154 determines the body surface temperature of the subject 4 based on the temperature data measured by the temperature sensor 243 among the sensing signals stored in the sensor data collection processing unit 15. To do. The subject situation determination unit 155 indicates the body movement and body temperature of the subject 4 when the electrocardiogram data determination unit 152 determines that the electrocardiogram of the subject 4 is abnormal. By grasping from the outputs of the determination unit 153 and the body surface temperature determination unit 154, the state of the subject 4, for example, normal or abnormal can be determined.

  According to the first embodiment of the present invention as described above, the sensor unit 2 including the electrocardiogram sensor 241, the acceleration sensor 242, and the temperature sensor 243 attached to the subject 4 exercising on the ground, and each of the above sensors. By using the wireless repeater 3 having the omnidirectional transmission / reception antenna 31 attached to the subject 4 between the center device 1 (installed outside the ground) for analyzing the acquired data from the mobile station, exercises on the ground. While the subject 4 changes direction, runs around, further rotates, falls, etc. or encounters an accident, stable acquisition of biological information such as electrocardiogram, body temperature, and body movement at that time can do.

  In particular, since the wireless repeater 3 includes the omnidirectional transmission / reception antenna 31, the sensing signal from the sensor unit 2 can be relayed stably regardless of the direction of the subject 4 moving in the ground.

[Second Embodiment]
FIG. 6 is a diagram showing the configuration of the second exemplary embodiment of the present invention.

  In the first embodiment, the wireless repeater 3 is attached to one place such as the shoulder of the subject 4, but in the second embodiment, a plurality of wireless repeaters 3-1 and 3- 2 is used.

  Here, each of the wireless repeaters 3-1 and 3-2 is equivalent to the wireless repeater 3 described in the first embodiment. That is, the wireless repeater 3-1 includes an omnidirectional transmission / reception antenna 31-1 similar to the omnidirectional transmission / reception antenna 31 and a transmission / reception unit 32-1 similar to the transmission / reception unit 32. Similarly, the radio repeater 3-2 includes an omnidirectional transmission / reception antenna 31-2 and a transmission / reception unit 32-2.

  The plurality of wireless repeaters 3-1 and 3-2 having such a configuration are attached to a plurality of locations of the subject 4, for example, chest and back.

  In the biological information monitoring system according to the present embodiment, sensing data sent from the sensor unit 2 is sent to the center device 1 via the wireless repeater 3-1 or 3-2. In this case, of the sensing data sent from the wireless repeater 3-1 or 3-2 to the center device 1, the center device 1 receives a wireless signal from the wireless repeater with the stronger reception power. Similarly, the control signal sent from the center apparatus 1 is sent to the sensor unit 2 via the radio repeaters 3-1 and 3-2. In this case, of the control signals sent from the wireless repeater 3-1 or 3-2 to the sensor unit 2, the sensor unit 2 receives the wireless signal from the wireless repeater with the stronger reception power.

  According to such a configuration, since a plurality of wireless repeaters 3-1 and 3-2 are used, even when the subject's movement is complicated and the orientation of the subject constantly changes, the sensor Biological information can be acquired more stably from the unit 2 and the biological information can be monitored.

[Third Embodiment]
FIG. 7 is a diagram showing the configuration of the third exemplary embodiment of the present invention.

  In the first embodiment, one sensor unit 2 is attached to the subject 4, but in the third embodiment, a plurality of sensor units 2-1 and 2-2 are connected to the subject 4. It is to be attached to.

  Here, each of the sensor units 2-1 and 2-2 is equivalent to the sensor unit 2 described in the first embodiment. That is, the sensor unit 2-1 has the same antenna unit 21-1 as the antenna unit 21, the same sensor signal transmission / reception unit 22-1 as the sensor signal transmission / reception unit 22, and the same sensor drive as the sensor drive control unit 23. A control unit 23-1, a sensor main body 24-1 similar to the sensor main body 24, and a battery 25-1 similar to the battery 25 are provided. Similarly, the sensor unit 2-2 includes an antenna unit 21-1, a sensor signal transmission / reception unit 22-2, a sensor drive control unit 23-2, a sensor main body 24-2, and a battery 25-2.

  In the biological information monitoring system according to the present embodiment, each sensing data sent from the sensor units 2-1 and 2-2 is sent to the center device 1 via the wireless repeater 3. In this case, the sensing data sent from the sensor units 2-1 and 2-2 to the wireless repeater 3 is relayed by the wireless repeater 3 as two pieces of sensing data and sent to the center device 1. The control signal is sent from the center device 1 and sent to the sensor units 2-1 and 2-2 via the wireless repeater 3.

[Fourth Embodiment]
FIG. 8 is a diagram showing the configuration of the fourth exemplary embodiment of the present invention.

  In the first embodiment, the control signal from the center device 1 to the sensor unit 2 is relayed by the wireless repeater 3, but in the fourth embodiment, the control signal is not transmitted and the sensor unit 2 is This is set in advance (preset).

  Therefore, in this case, as shown in FIG. 8, signals are transmitted from the antenna unit 21 to the sensor signal transmission unit 22, from the sensor signal transmission unit 22 to the sensor drive control unit 23, and from the sensor drive control unit 23 to the sensor body 24. A transmission path is not required.

  Therefore, the configuration of the sensor unit 2 is simplified, and the size can be further reduced. Further, the time used for transmission of the control signal from the center device 1 to the sensor unit 2 is not necessary, and it is suitable for monitoring the states of a larger number of subjects 4.

[Fifth Embodiment]
FIG. 9 is a diagram showing the configuration of the fifth exemplary embodiment of the present invention.

  In the first embodiment, the transmission timing is between the sensor unit 2 and the wireless repeater 3 (uplink) and between the wireless repeater 3 and the center device 1 (downlink). However, the fifth embodiment prevents interference by using different frequencies for individual communications, instead of preventing interference by such time division. Is.

  Therefore, as shown in FIG. 9, the wireless repeater 3 includes two sets of antennas and transmission / reception units including an omnidirectional transmission / reception antenna 31A and a transmission / reception unit 32A, and an omnidirectional transmission / reception antenna 31B and transmission / reception unit 32B. The frequency converter 33 for converting the frequency is provided between the transmitter / receiver 32A and the transmitter / receiver 32B. That is, if the wireless communication between the center device 1 and the wireless repeater 3 is performed at the frequency f1, and the wireless communication between the sensor unit 2 and the wireless repeater 3 is performed at the frequency f2, the frequency conversion between the frequencies of the f1 and the f2 is performed. This is performed by the unit 33. That is, the sensing data sent from the sensor unit 2 is converted from the frequency f2 to f1 by the frequency converter 33 and sent from the wireless repeater 3 to the center device 1. The control signal sent from the center device 1 is converted from the frequency f1 to f2 by the frequency converter 33 and sent from the wireless repeater 3 to the sensor unit 2.

  Thus, the effect similar to the said 1st Embodiment can be show | played by using a different frequency.

  Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications and applications are naturally possible within the scope of the gist of the present invention.

  For example, the configurations of the center device 1 and the sensor unit 2 are not limited to the above embodiment.

  Furthermore, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and is described in the column of the effect of the invention. If the above effect is obtained, a configuration from which this configuration requirement is deleted can be extracted as an invention.

FIG. 1 is a diagram showing a configuration of a biological information monitor system according to the first embodiment of the present invention. 2A is a diagram illustrating the configuration of the sensor unit and the wireless repeater, FIG. 2B is a diagram illustrating the omnidirectionality of the omnidirectional transmission / reception antenna, and FIGS. 2C and 2D are wireless. It is a figure which shows the example of a shape of a repeater. FIG. 3 is a diagram showing a schematic configuration of a sensor main body and a sensor drive control unit in the sensor unit. FIG. 4 is a diagram illustrating a schematic configuration of a sensor signal transmission unit in the sensor unit. FIG. 5 is a diagram showing the configuration of the center device. FIG. 6 is a diagram showing the configuration of the second exemplary embodiment of the present invention. FIG. 7 is a diagram showing the configuration of the third exemplary embodiment of the present invention. FIG. 8 is a diagram showing a configuration of a sensor unit in the fourth embodiment of the present invention. FIG. 9 is a diagram showing a configuration of a wireless repeater in the fifth embodiment of the present invention.

Explanation of symbols

    DESCRIPTION OF SYMBOLS 1 ... Center apparatus, 2,2-1,2-1 ... Sensor unit, 3,3-1, 3-2 ... Wireless repeater, 4 ... Subject, 6,6-1,6-2 ... Electrode clip 11 ... antenna unit, 12 ... signal distributing unit, 13 ... receiving unit, 14 ... transmitting unit, 15 ... sensor data collection processing unit, 16 ... sensor control unit, 21, 21-1, 21-2 ... antenna unit, 22 , 22-1, 22-2 ... sensor signal transmission / reception unit, 23, 23-1, 23-2 ... sensor drive control unit, 24, 24-1, 2-2 ... sensor body, 25, 25-1, 25- 2 ... Battery 31,31A, 31B, 31-1,31-2 ... Non-directional transmission / reception antenna 32,32A, 32B, 32-1,32-2 ... Transmission / reception unit 33 ... Frequency conversion unit 51,52 ... Wireless network, 151 ... Sensing data storage , 152: ECG data determination unit, 153: Acceleration sensor data determination unit, 154 ... Body surface temperature determination unit, 155 ... Subject condition determination unit, 231 ... CPU (Central Processing Unit), 232 ... Storage unit, 233 ... Crystal oscillator for control unit, 234, 235, 236 ... AD converter, 236 ... Voltage controlled oscillator, 237, 2201, 2112 ... SPI (server programming interface), 241 ... Electrocardiogram sensor, 242 ... Acceleration sensor, 243 ... Temperature sensor, 2202, 2210 ... Digital signal control unit, 2203 ... Signal modulation unit, 2204, 2208 ... Mixing unit, 2205 ... Power amplification unit, 2206 ... Transmission / reception signal distribution unit, 2207 ... Low noise amplification unit, 2209 ... Signal demodulation unit 2212: Crystal oscillator for transmission / reception unit 2213: Phase stability Circuit, 2214 ... voltage-controlled oscillator.

Claims (6)

A sensor unit that is mounted at a predetermined location on the body surface of the subject, includes a sensor for detecting the biological information of the subject, and wirelessly outputs a sensing signal based on detection data of the sensor;
Including a non-directional antenna attached to the subject, receiving a sensing signal wirelessly output from the sensor unit using the non-directional antenna, amplifying it, and using the non-directional antenna A wireless repeater for wireless transmission,
A center device that is provided in a predetermined area, receives a sensing signal wirelessly transmitted from the wireless repeater, and determines a state during the exercise of the subject based on the sensing signal;
A biological information monitoring system comprising:   The biological information monitoring system according to claim 1, wherein the wireless repeater is mounted on a shoulder or a head of the subject.   The biological information monitoring system according to claim 1, wherein a plurality of wireless repeaters are mounted at a plurality of positions of the subject.   The biological information monitoring system according to claim 3, wherein the wireless repeater is mounted on the chest and back of the subject. The center device wirelessly transmits a control signal for controlling the sensor unit,
The wireless repeater receives the control signal from the center device using the omnidirectional antenna, amplifies it, and wirelessly transmits to the sensor unit using the omnidirectional antenna,
The sensor unit receives the control signal wirelessly transmitted from the wireless repeater, and operates according to the control signal.
The biological information monitor system according to claim 1, wherein the biological information monitor system is a biological information monitor system.   The biological information monitoring system according to claim 1, wherein the omnidirectional antenna of the wireless repeater is a whip antenna.

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