JP6044753B2 - Rescue support device and rescue support system - Google Patents

Description

  The present invention relates to a rescue signal transmitter and a rescue support system.

  If you are active in a snowy mountain (skiing, mountain climbing, construction, hunting, etc.) and you act in a place where snow is unstable, you may encounter an avalanche. The current searching method at the time of burial is generally using a beacon and a probe. However, if the user is not used to operating the beacon, it takes time and sometimes the buried person falls into a serious state. Therefore, it is necessary to encounter avalanches and search and discover from the burial in a short time.

  As a conventional technique, there is a distress relief system using a low altitude orbiting satellite (LEO) mainly in the United States, Canada, France and Russia. The LEO satellite receives a distress beacon from a dedicated wireless device possessed by the victim when passing over the victim and then transmits a signal when passing over 39 dedicated ground stations located in the world. The ground station estimates the position of the victim with accuracy of 30 km using the Doppler information of the signal, etc., issues a command to the rescue center, and performs rescue activities. The LEO satellite can be contacted only when it passes over the victim, so there will be a time delay, but it is said that the real-time performance has been improved by adding a disaster rescue function to the geostationary satellite.

  In addition, GPS has four satellites on six orbits whose ascending intersection tilt angle is 55 degrees and ascending intersection longitude is different by 60 degrees. Has been. The positioning method is supposed to be performed as follows. First, the time taken for radio waves emitted from any of the four satellites to reach the user receiver is measured, and the distance to the satellite is measured by multiplying by the speed of light C. Then, the four satellites are divided into two groups, and the two satellites are composed of the rotational hyperbola focusing on the two satellites composed of the difference in distance from the two satellites in one group and the difference in distance from the two satellites in the other group. Find the intersection on the earth with a rotating hyperbola with the focus on. The position of the user receiver is obtained from this intersection.

  For the purpose of reducing the cost of rescue work by accurately grasping the location of the distressed place and reducing the risk of rescue work, Patent Document 1 describes "a storage unit that stores its own location information and a user who owns the self". A detection unit that detects the amount of water possessed by the user, a determination unit that determines that the user needs to be rescued when the amount of water detected by the detection unit is less than a predetermined amount of water, and the determination unit A mobile communication device comprising: a transmission unit that transmits the location information stored in the storage unit when it is determined that the user needs to be rescued Yes.

  When a climber is involved in an avalanche, there is a commercially available device for both sending and receiving using MF-band radio waves (457 kHz) called “Avalanche Beacon” for quick rescue activities. There is a way to search for victims. The amount of attenuation when radio waves emitted from a transmitter deeply buried in snow pass through the snow depends on the frequency, moisture content, density and temperature of the snow. In general, the higher the frequency of the radio wave, the shorter the wavelength, which is advantageous for downsizing of the transmission / reception device, and the radio wave tends to fly, but there is a problem that the radio wave is easily attenuated while passing through snow.

  Patent Document 2 relates to a distress search support system and a search method thereof for identifying a position of a victim who has been buried in the snow due to an avalanche at an early stage, and for helping the rescue. A transmitter having a function of transmitting one or more types of radio waves selected from the above and one or more types of radio waves selected from the frequency range of the MF band, and the transmission time becomes longer When the transmission period of transmission becomes longer or when the searcher receives a search signal, the climber possesses a transmitter whose transmission output increases, and when the climber is distressed, the transmitter is transmitted from the climber A wide-ranging primary search is conducted to detect 430 MHz band radio waves from the sky, and based on the information, the ground search team then approaches the distress site, and the distress area using the 430 MHz band radio wave method is used. And narrowing of the mountain victim search system characterized by performing the second search climbers to identify the distress position by radio waves MF band are transmitted from a transmitter who holds "is disclosed.

  In the paragraph “0019” of Patent Document 2, “FIGS. 2A and 2B show two types of small transmitters possessed by a mountain climber. Each frequency wave is radiated intermittently, one of which is a 430 MHz band (A wave) 22 approved as a specific low power radio station in the frequency range of VHF to UHF band, and another wave Is an international standard frequency for avalanche transceiver 457 kHz (B wave) 23. B wave can also be used for the initial search between climbers. There is an additional function 25 for displaying temperature, barometric pressure, altitude, etc., but there is no reception search function, so it is small and portable, and you can also choose to radiate only A waves when there is no snow, In addition, distress radio waves are transmitted to the Distress Rescue Center. It is also possible to add a function to turn the lamp blue when the small transmitter (b) is connected to the B wave transmission 23 and reception function 24 called “avalanche beacon” on the market. The transmission function 22 is added. Is described.

  Further, in the paragraph “0022” of Patent Document 2, “FIG. 1 shows an example of a mountain victim search system. A wave 11 that reaches far away is lifted by a helicopter 30 equipped with a radio wave azimuth detector 50. 3, the helicopter includes a high-performance GPS receiver (position sensor) 31 that acquires a flight position, a gyrocompass (direction sensor) 32 that acquires a flight direction, and an acceleration sensor that acquires a flight attitude. (Attitude sensor) 33 is attached, and the spatial coordinates and reference direction data of the radio wave direction measurement point can be obtained from the position / orientation / orientation information of the airframe.If the A wave 11 is caught during the search, the helicopter moves At the same time, the radio wave intensity and direction of arrival at multiple points are continuously measured, and on the aircraft, a simple distress analysis device 36 can be used to estimate the source. By creating a figure overlaid on the map information, the location of the distress can be roughly identified and used to select an appropriate measurement flight route, while the arrival direction of the A wave 11 and the radio wave intensity data are measured coordinates during measurement flight. (Latitude, longitude, altitude) 31, wireless data 13 of the aircraft orientation sensor 32 and attitude sensor 33 are transmitted in real time to the distress relief center 70. In the distress relief center 70 such as the police, the fire department, etc. that received the data, As shown in Fig. 4, the distressed radio wave arrival direction and radio wave intensity data are collected at the same time as the position, direction and attitude data of the aircraft, and if necessary, sufficient data can be obtained by requesting additional flight routes. The position of the radio wave source is directly estimated by creating a two-dimensional existence probability density distribution map from the multiple intersections in the direction of arrival and the radio wave intensity distribution. FDTD (Finite Difference Time Domain method) computer simulation considering the reflection / diffraction propagation characteristics of radio waves in the actual mountainous terrain around the position estimated by the above method. (41-46) and collate with the above-mentioned result By introducing such a feedback process, the distress estimated place is reduced to the range of about 100m square by eliminating the false source generated by the multiple dating method. The distress location is displayed in a superimposed manner in the mountain map information screen (42) .This distress location information is notified to the ground search team 20. "

  Further, the paragraph “0023” of Patent Document 2 states that “the ground search team 20 that has received these information approaches the distress site, and the A-wave 11 (or B-wave 12) radio wave is transmitted by the small radio direction finder 60 that is carried. ”, The distress area is narrowed down by the association method, and the position of the maximum radio wave intensity of the B wave 12 (or A wave 11) is found to identify the distress position by about 2 to 3 m square.” ing.

  Patent Document 3 discloses a search system having “a search target terminal possessed by a search target person and a search terminal for searching for the search target terminal, wherein the search target terminal receives a position related signal from a position information satellite. A search target position information generating unit that measures the current position based on the information to generate search target position information indicating the current position of the search target terminal, and transmits search request information including the search target position information to the search terminal. Search request information transmitting means, excitation signal receiving means for receiving an excitation signal from the search terminal, and response signal transmitting means for transmitting a response signal corresponding to the excitation signal, wherein the search terminal Search request information receiving means for receiving the request information, and generating the search terminal position information indicating the current position of the search terminal by measuring the current position based on the position related signal from the position information satellite Search terminal position information generating means, position comparison means for comparing the current position of the search target terminal indicated by the search target position information with the current position of the search terminal indicated by the search terminal position information, and the position comparison means Based on the comparison result, excitation signal transmitting means for transmitting the excitation signal to the search target terminal, response signal receiving means for receiving the response signal corresponding to the excitation signal from the search target terminal, And a response signal direction specifying means for specifying the direction of the response signal.

  When an earthquake, avalanche, landslide, etc., burying in a certain space, confined in a certain space, if a distress occurs when it falls from a high place, a calamity that is attacked, a whispering escape, etc., it is necessary to rescue the life form promptly . As a conventional technology, a disaster detection sensor, a biological information measurement sensor, and a transmitter are attached to what is carried around such as a wristwatch for the rescue of a person who has been buried alive due to an earthquake disaster. There is one that transmits biological information as a radio signal with a transmitter only when a disaster is detected.

  Because it cannot be detected that it is burying alive, even if the person is not trapped in the house under an earthquake, etc., if the disaster detection sensor detects an earthquake, it will transmit biological information as radio waves and search There is a problem that the radio wave detector of the rescue team may make a mistake and hinder the rescue operation. It was made in view of such issues, and disasters (living due to earthquakes, avalanches, landslides, etc., confinement in a space, distress when falling from a high place, disasters attacked, whispering away) For the purpose of providing a rescue signal generation method and apparatus capable of detecting that a rescue is necessary and transmitting a rescue signal when it occurs, Patent Document 4 discloses that “a disaster is added to a life form. (Step 1), it is determined whether or not rescue is necessary based on the moving distance of the living body within a certain time (step 2), and if it is determined that rescue is necessary, a rescue signal is transmitted ( Step 3), "a rescue signal generation method characterized by the above.

  In Patent Document 5, “a position confirmation system that detects a signal from a portable device and confirms its position, the portable device includes means for transmitting information specifying a user who owns the portable device. The control device having a detection unit that detects a signal from the portable device uses map information to identify a user who owns the portable device based on the signal from the portable device detected by the detection unit. A control device that superimposes and displays on a display unit, and a transmission unit that transmits map information displayed on the display unit and information that identifies the user, and a management device that is in communication connection with the control device, A position confirmation system is disclosed that receives the map information transmitted from the control device and information for identifying the user and displays the information on a display unit of the management device.

  An avalanche victim beacon device (hereinafter referred to as an avalanche beacon) that is widely used is a portable lifesaving radio device that uses a single-frequency radio wave of 457 kHz. Each person (snow mountain climber, skier, worker, etc.) who acts in an avalanche-prone area carries the avalanche beacon in a constant transmission state (transmission mode). If the position is unknown due to being caught in a sudden avalanche and buried in the snow, the avalanche beacon held by the searcher is switched to the reception state (search mode), and the victim (avalanche buried) Relying on the radio waves sent by the person to find and rescue the victim. In the case of an accident caused by an avalanche, it is generally necessary to rescue at least 15 minutes after being buried. After that, the survival rate of avalanche victims decreases dramatically over time. In the conventional avalanche beacon or the prior art, there is a problem that a plurality of victims exist adjacent to each other and cannot be fully effective in the case of an avalanche disaster that requires quick rescue. . In order to provide an avalanche beacon that can be rescued by identifying a victim and quickly searching for the victim when there are multiple victims in the same area. Patent document 6 states that “avalanche victim search that searches for a victim by receiving a beacon signal transmitted from a transmitter carried by one or more victims buried in an avalanche with a receiver. In the beacon device for use, the transmitter includes a carrier wave generating means for generating a carrier wave having a constant frequency, an identification signal input means for generating a digital identification signal unique to each transmitter, and a modulation for modulating the carrier wave with the identification signal. A beacon device for searching for avalanche victims, which is characterized by comprising a container.

JP 2006-185436 A JP 2005-229449 A JP 2006-010331 A JP 2005-310034 A JP 2001-325634 A JP 2003-198389 A

  However, in the case of a searcher who is not familiar with beacon and probe operations, it takes time to search, and there is a risk that the victim will fall into a serious state. Therefore, it is necessary to perform a search and discovery after being buried in the snow in a short time.

  The altitude information can be obtained from the map information based on the position information that can be acquired from GPS. However, since snow must be taken into account, the depth at which the victim is buried is only determined by GPS position information. Because of the unknown, the problem was that things had to be serious.

  Furthermore, since the GPS signal is easily attenuated while passing through the snow, the beacon cannot receive the GPS signal in a state where the victim is buried, and the position information may not be acquired.

  The present invention has been made in view of the above problems, and according to some aspects of the present invention, a rescue signal transmission device capable of reliably transmitting information on the distress location of a distress, and distress It is possible to provide a rescue support system that enables early rescue of a person.

[Application Example 1]
The rescue signal transmission device according to this application example includes a position calculation unit that calculates the position of the user, an impact determination unit that determines whether the magnitude of the impact applied to the user exceeds a predetermined threshold, and the user A movement trajectory calculation unit that calculates a movement trajectory until the user stops, starting from the position of the user calculated by the position calculation unit when the magnitude of the applied impact exceeds the predetermined threshold; and the position calculation Rescue information that estimates the user's stop position using the user's position calculated by the unit and the user's movement trajectory calculated by the movement trajectory calculation unit, and generates rescue information including information on the stop position A rescue signal including the rescue information.

  For example, when a user of this rescue signal transmission device is involved in an avalanche, it is considered that a considerable impact is applied to the user. Thus, when the magnitude of the impact applied to the user exceeds a predetermined threshold, the rescue signal transmission device calculates a movement trajectory until the user stops and follows the user's movement trajectory from the user's position. Thus, the stop position (distress position) of the user is estimated, and a rescue signal including information on the stop position is transmitted. That is, this rescue signal transmission device is involved in an avalanche with information on a position calculated before the user is involved in an avalanche even if the user is involved in an avalanche and becomes unable to receive satellite signals. Since the user's distress position can be estimated from the information of the user's movement trajectory after that, the distress position information can be reliably transmitted.

[Application Example 2]
The rescue signal transmission device according to the application example further includes an acceleration sensor, and the impact determination unit uses the detection data of the acceleration sensor to determine whether the magnitude of the impact applied to the user exceeds the predetermined threshold value. It may be determined whether or not.

  Since the magnitude of the acceleration applied to the user changes according to the magnitude of the impact applied to the user, the magnitude of the impact can be specified from the magnitude of the acceleration detected by the acceleration sensor. The acceleration sensor may detect a multi-axis acceleration.

  The rescue signal transmission device may store the detection data of the acceleration sensor in the storage unit. In this way, after the user who has been distressed is rescued, information such as the magnitude of impact received by the user can be obtained by reading out and analyzing the detection data of the acceleration sensor from the storage unit. By referring to this information, the user can take appropriate measures.

[Application Example 3]
The rescue signal transmission device according to the application example further includes a geomagnetic sensor, and the movement trajectory calculating unit calculates the movement trajectory using detection data of the acceleration sensor and detection data of the geomagnetic sensor. It may be.

  The moving speed can be calculated by first-order integrating acceleration values calculated from the detection data of the acceleration sensor, and the moving distance can be calculated by second-order integrating. Further, the moving direction can be calculated from the detection data of the geomagnetic sensor. Therefore, the movement trajectory can be calculated using the detection data of the acceleration sensor and the detection data of the geomagnetic sensor.

  This rescue signal transmission device may store information on the movement trajectory in the storage unit. In this way, after rescue of a distressed user, it is possible to grasp in detail the situation at the time of the distress by reading and analyzing information on the movement trajectory of the user from the storage unit. Thereby, it is possible to perform an appropriate treatment for the user.

[Application Example 4]
The rescue signal transmission device according to the application example further includes an altitude calculation unit that calculates the altitude of the user, and the rescue information generation unit generates the rescue information further including altitude information of the stop position of the user. You may do it.

  If the rescue signal transmitted by the rescue signal transmitter is received, information on the altitude of the stop position can be obtained together with the stop position (latitude / longitude) of the user, so that a more accurate distress position can be specified. .

[Application Example 5]
The rescue signal transmission device according to the application example may further include an atmospheric pressure sensor, and the altitude calculating unit may calculate the altitude of the user using detection data of the atmospheric pressure sensor.

  Since the atmospheric pressure also changes according to the change in altitude of the user, the altitude can be calculated from the atmospheric pressure value detected by the atmospheric pressure sensor.

[Application Example 6]
The rescue signal transmission device according to the application example may further include a time measurement unit that measures an elapsed time from a given timing after the magnitude of an impact applied to the user exceeds the predetermined threshold.

  In the rescue signal transmission device, the rescue information generation unit may generate rescue information further including the elapsed time information and transmit a rescue signal including the rescue information, or stores the elapsed time information. You may make it preserve | save in a part.

  In this way, it is possible to determine the risk of the user's life from the information on the elapsed time when the user is found, and to take an appropriate measure according to the risk.

[Application Example 7]
The rescue signal transmission device according to the application example may further include a biological information detection unit that detects biological information of the user.

  In the rescue signal transmission device, the rescue information generation unit may generate rescue information further including the biological information, and transmit a rescue signal including the rescue information, or save the biological information in the storage unit. You may do it.

  In this way, it is possible to determine the risk of the user's life from the user's biological information, and to take an appropriate measure according to the risk for the user.

[Application Example 8]
The rescue signal transmission device according to the application example may receive the rescue signal transmitted by another rescue signal transmission device.

[Application Example 9]
The rescue signal transmission device according to the application example described above uses the biological information of the lost user obtained from the rescue information included in the received rescue signal, and determines the severity of the lost user. A determination unit may be further included.

  The rescue signal transmission device may display the determination result of the severity determination unit on a display unit. The user of this rescue signal transmission device can perform an appropriate rescue operation in consideration of the severity of the victim. For example, when there are a plurality of victims, the user can compare the severity of each victim and take measures such as preferentially rescue the victims who may be helped.

[Application Example 10]
The rescue support system according to this application example includes a plurality of rescue signal transmitters according to the above application examples, some of the rescue signal transmitters transmit the rescue signal, and some of the other rescue signal transmitters Receives the rescue signal.

[Application Example 11]
The rescue signal transmission method according to this application example includes a position calculation step for calculating a user position, an impact determination step for determining whether or not the magnitude of an impact applied to the user exceeds a predetermined threshold, and A movement trajectory calculation step for calculating a movement trajectory until the user stops, starting from the position of the user calculated in the position calculation step when the magnitude of the applied impact exceeds the predetermined threshold; and the position calculation Rescue information for estimating the user's stop position using the user's position calculated in the step and the user's movement trajectory calculated in the movement trajectory calculating step, and generating rescue information including information on the stop position A generating step and a step of transmitting a rescue signal including the rescue information are performed.

[Application Example 12]
A program according to this application example includes: a computer; a position calculation unit that calculates a position of a user; an impact determination unit that determines whether the magnitude of an impact applied to the user exceeds a predetermined threshold; and A movement trajectory calculation unit that calculates a movement trajectory until the user stops, starting from the position of the user calculated by the position calculation unit when the magnitude of the applied impact exceeds the predetermined threshold; and the position calculation Rescue information that estimates the user's stop position using the user's position calculated by the unit and the user's movement trajectory calculated by the movement trajectory calculation unit, and generates rescue information including information on the stop position It functions as a generation control unit and a communication control unit that transmits a rescue signal including the rescue information.

[Application Example 13]
The recording medium according to this application example is a computer-readable recording medium in which the program according to the application example is recorded.

Explanatory drawing about the outline | summary of the rescue assistance system of 1st Embodiment. The figure which shows the structural example of the rescue assistance system of 1st Embodiment. The figure which shows an example of the external appearance of a rescue signal transmission device. The figure which shows the structural example of the rescue signal transmission device of 1st Embodiment. The figure which shows an example of the acceleration added to a user when a user encounters an avalanche. The figure which shows an example of the transmission process of the rescue signal transmission apparatus of 1st Embodiment. The figure which shows an example of the reception process of the rescue signal transmission apparatus of 1st Embodiment. The figure which shows an example of the display screen of the rescue signal transmission apparatus of 1st Embodiment. The figure which shows the structural example of the rescue signal transmission device of 2nd Embodiment. The figure which shows an example of the transmission process of the rescue signal transmission apparatus of 2nd Embodiment. Explanatory drawing about the outline | summary of the rescue assistance system of 3rd Embodiment. The figure which shows the structural example of the rescue assistance system of 3rd Embodiment. The figure which shows an example of the transmission process of the rescue signal transmission apparatus of 3rd Embodiment. The figure which shows an example of the reception process of the rescue signal transmission apparatus of 3rd Embodiment. The figure which shows an example of the display screen of the rescue signal transmission apparatus of 3rd Embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The embodiments described below do not unduly limit the contents of the present invention described in the claims. Also, not all of the configurations described below are essential constituent requirements of the present invention.

1. 1. First embodiment 1-1. Outline of Rescue Support System In the rescue support system according to the first embodiment, the rescue signal transmission device automatically detects that a user has suffered a problem when the user is involved in an avalanche in a snowy mountain and transmits a rescue signal. . For example, as shown in FIG. 1, a user 3 carrying the rescue signal transmission device 2 of the present embodiment is caught in an avalanche 4 at a point of a snow mountain position P ₀ (altitude h ₀ ), and falls on a slope of the mountain. It is assumed that the vehicle is stopped while being buried in snow at a position P _n (altitude h _n ) via positions P ₁ (altitude h ₁ ), P ₂ (altitude h ₂ ), P ₃ (altitude h ₃ ),. To do. The rescue signal transmission device 2 receives the GPS radio signal from the GPS satellite 5 and calculates the position until the user 3 is involved in the avalanche, thereby calculating the position P ₀ (or altitude h _{0 in the} case of three-dimensional positioning). Information can be obtained. However, since the frequency of the GPS radio wave is very high, the radio wave is likely to be attenuated while passing through the snow. After the user 3 is caught in the avalanche, the rescue signal transmitter 2 can reliably receive the GPS radio signal. There is no guarantee. Therefore, after the user 3 is involved in the avalanche, the rescue signal transmission device 2 uses various sensors to calculate the movement trajectory until the user 3 stops, and finally the position P where the user 3 stops. _n is calculated. Moreover, the rescue signal transmitter 2 calculates the altitude h _n of the position P _n using the atmospheric pressure sensor. And the rescue signal transmission device 2 transmits a rescue signal including information on the position P _n and the altitude h _n . The other user who was acting together with the lost user 3 also carries the rescue signal transmission device 2, and the rescue signal transmission device 2 of the other user receives the rescue signal and the accuracy of the lost user Displays information on the position and altitude. The other user can be expected to rescue the lost user quickly with reference to the information displayed on the rescue signal transmission device 2.

1-2. Configuration of rescue support system [Overall configuration]
FIG. 2 is a diagram illustrating a configuration example of the rescue support system according to the present embodiment. The rescue support system of the present embodiment may have a configuration in which some of the components (each unit) in FIG. 2 are omitted or changed, or other components are added.

  As shown in FIG. 2, the rescue support system 1 of the present embodiment includes a plurality of rescue signal transmitters 2.

  Each rescue signal transmitter 2 is attached to each user, detects that the user has received an impact due to an avalanche, etc., and automatically transmits a rescue signal including information such as the exact position and altitude of the user who has suffered .

  Each rescue signal transmitting device 2 receives a rescue signal transmitted by another rescue signal transmitting device 2 and displays information on a lost user.

[Configuration of rescue signal transmitter]
FIG. 3 is a diagram illustrating an example of the appearance of the rescue signal transmission device 2. As shown in FIG. 3, the rescue signal transmission device 2 is a portable device including, for example, an operation unit 32, a display unit 38 (liquid crystal display, organic EL display, etc.), a sound output unit 40 (microphone, etc.), and the like. And it may be a portable information terminal such as a smartphone having a function of transmitting and receiving a rescue signal. By providing a contact detection mechanism for the display unit 38, the display unit 38 may also be used as an operation unit.

  The user 3 puts the rescue signal transmission device 2 in a pocket with a chuck of clothes or wears it on the body or clothes with a band or the like so as not to drop the rescue signal transmission device 2 in the event of an avalanche impact or falling. Alternatively, the user 3 may wear the wristwatch type rescue signal transmission device 2 on the arm. In addition, when the user 3 wears the rescue signal transmission device 2 on the winter clothes, it is desirable that the rescue signal transmission device 2 is worn on the underwear because a malfunction may occur due to an avalanche impact and cold. .

  FIG. 4 is a diagram illustrating a configuration example of the rescue signal transmission device of the present embodiment. The rescue signal transmission device of the present embodiment may have a configuration in which some of the components (each unit) in FIG. 4 are omitted or changed, or other components are added.

  As shown in FIG. 4, the rescue signal transmission device 2 of the present embodiment includes a processing unit (CPU: Central Processing Unit) 10, a sensor group 20, a communication unit 30, an operation unit 32, a storage unit 34, a recording medium 36, and a display. A unit 38, a sound output unit 40, and a GPS antenna 50 are included. The rescue signal transmission device 2 of the present embodiment may have a configuration in which some of these components (each unit) are omitted or changed, or other components are added.

  The GPS antenna 50 is an antenna that receives a radio wave signal (GPS signal) transmitted from a GPS satellite. The GPS signal received by the GPS antenna 50 is sent to a processing unit (CPU) 10, and the processing unit (CPU) 10. Used for positioning calculation by.

  The sensor group 20 includes an acceleration sensor 21, a gyro sensor (angular velocity sensor) 22, a geomagnetic sensor 23, and an atmospheric pressure sensor 24. The sensor group 20 of the present embodiment may have a configuration in which some of these components (parts) are omitted or changed, or other components are added.

  The acceleration sensor 21 detects acceleration applied to the user. Since the greater the impact applied to the user, the greater the acceleration, it can be determined to some extent whether the user has received an impact due to the avalanche from the magnitude of the acceleration detected by the acceleration sensor 21. Further, when the user is stationary, the acceleration sensor 21 detects only the gravitational acceleration (1G). Therefore, if the user wears the rescue signal transmission device 2 in a predetermined direction, the acceleration sensor 21 is detected. The user's post-disaster posture can be determined to some extent from the detected value. Alternatively, after the user installs the rescue signal transmission device 2, the user stops in a predetermined posture (such as an upright posture), and the acceleration sensor 21 detects the acceleration sensor 21 based on the direction of the gravitational acceleration detected by the acceleration sensor 21 at this time. The attitude of the user after the distress can be determined to some extent from the value.

  In addition, by integrating the detection value of the acceleration sensor 21 on the first floor, the moving speed when the user falls into an avalanche and falls can be calculated. Further, by integrating the detection value of the acceleration sensor 21 by the second floor, it is possible to calculate the moving distance when the user is involved in the avalanche and falls.

  Although the acceleration sensor 21 may be able to detect only acceleration in one axis direction, it cannot correctly detect acceleration applied in a direction orthogonal to the detection axis, so it can detect acceleration of two or more axes (multiple axes). Is better. However, since the biaxial acceleration sensor cannot correctly detect acceleration applied in directions orthogonal to the two detection axes, it is desirable that the acceleration sensor 21 can detect acceleration of three or more axes.

  The gyro sensor 22 detects a rotational angular velocity applied to the user. Therefore, by integrating the detection value of the gyro sensor 22 on the first floor, the rotation angle (posture) when the user falls into the avalanche and falls can be calculated.

  The gyro sensor 22 may be able to detect only the angular velocity in one axis direction, but cannot detect the angular velocity applied in the direction orthogonal to the detection axis, so it can detect the angular velocity of two or more axes (multiple axes). Is better. However, since the biaxial gyro sensor cannot correctly detect the angular velocity applied in the direction orthogonal to the two detection axes, it is desirable that the gyro sensor 22 can detect the angular velocity of three or more axes.

  The geomagnetic sensor 23 detects the direction. Therefore, it is possible to calculate the direction when the user falls into the avalanche and falls from the detection value of the geomagnetic sensor 23.

  As described above, since the detected value of the acceleration sensor 21, the detected value of the gyro sensor 22, and the detected value of the geomagnetic sensor 23, the moving speed, moving distance, posture, and moving direction when the user falls into the avalanche and falls are known. It is possible to calculate the movement trajectory until the user stops after being caught in the avalanche, the posture after the stop, and the like.

  The atmospheric pressure sensor 24 detects the atmospheric pressure at the user's position. Generally, it is known that if the atmospheric pressure is known, the altitude can be calculated by the following equation (1).

In equation (1), t is the average temperature (° C.) of the gas phase, p ₀ is the sea level pressure (hPa), and p is the observed value (hPa) of the pressure.

  In Expression (1), 0.00366 × t is a correction term based on temperature. If the temperature t is unknown, the altitude h may be approximately calculated from the following Expression (2).

When the altitude and the atmospheric pressure during the user's work are h ₁ and p ₁ respectively, and the altitude and the atmospheric pressure after the user falls are h ₂ and p ₂ , respectively, the following expression (3) is obtained from the expression (2).

  Therefore, the amount of change in altitude can be calculated from the amount of change in atmospheric pressure detected by the atmospheric pressure sensor 24 from Equation (3).

  As the atmospheric pressure sensor 24, a frequency change type that captures a change in pressure as a change in the frequency of the vibrator, a capacitance type that captures a change in pressure as a change in capacitance, and a change in pressure as a change in the resistance value of the piezoresistor. Sensors such as piezoresistive sensors can be applied. At present, the frequency change type barometric sensor has higher resolution than the capacitance type or piezoresistive type barometric sensor, and if it is a frequency change type barometric sensor, a resolution of 1 Pa or less is also realized. Is possible. In addition, by using a crystal resonator as the piezoelectric resonator, a frequency change type atmospheric pressure sensor having good temperature characteristics can be realized.

  The operation unit 32 is an input device including operation keys, button switches, and the like, and outputs an operation signal corresponding to an operation by a user to the processing unit (CPU) 10.

  The display unit 38 is a display device configured by an LCD (Liquid Crystal Display) or the like, and displays various types of information based on display signals input from the processing unit (CPU) 10.

  The sound output unit 40 is a device that outputs sound such as a speaker.

  The storage unit 34 stores programs, data, and the like for the processing unit (CPU) 10 to perform various types of calculation processing and control processing. The storage unit 34 is used as a work area of the processing unit (CPU) 10. Data input from the operation unit 32, programs and data read from the recording medium 36, and the processing unit (CPU) 10 performs various programs. It is also used for temporarily storing the calculation result and the like executed according to the above.

  The processing unit (CPU) 10 performs various types of calculation processing and control processing according to programs stored in the storage unit 34 and the recording medium 36. Specifically, the processing unit (CPU) 10 acquires data from various sensors included in the sensor group 20, stores the data in the storage unit 34 or the recording medium 36, and performs various calculations based on the acquired data. Process. Further, the processing unit (CPU) 10 performs various processes in accordance with operation signals from the operation unit 32, processes for displaying various information on the display unit 38, processes for outputting various sounds on the sound output unit 40, and the like. Do. The processing unit (CPU) 10 performs processing for transmitting a rescue signal via the communication unit 30 and processing for receiving a rescue signal transmitted by another rescue signal transmission device 2. In this embodiment, it is configured to be able to select either a transmission mode in which a rescue signal can be transmitted or a reception mode in which a rescue signal can be received by a predetermined operation on the operation unit 32, and the transmission mode is set when the power is turned on. Has been. In the present embodiment, since the processing unit (CPU) 10 performs data communication with each of the other rescue signal transmission devices 2, each rescue signal transmission device 2 has a unique identification number (unique identification number). When data communication is performed with each rescue signal transmission device 2, information on the unique identification number of the communication target rescue signal transmission device 2 is transmitted and received together with the communication target data.

  In particular, in the present embodiment, the processing unit (CPU) 10 includes a position calculation unit 11, an impact determination unit 12, a movement locus calculation unit 13, an altitude calculation unit 14, a rescue information generation unit 15, a time measurement unit 16, and a communication control unit. 17, a display control unit 18, and a sound output control unit 19. However, the processing unit (CPU) 10 of the present embodiment may have a configuration in which some of these configurations (elements) are omitted or changed, or other configurations (elements) are added.

  The position calculation unit 11 demodulates the navigation message superimposed on the GPS signal received via the GPS antenna 50, performs positioning calculation using the orbit information of each GPS satellite included in the navigation message, and determines the position of the user. Processing to calculate is performed. However, a demodulation unit that performs a process of demodulating the navigation message superimposed on the GPS signal is separately provided, and the position calculation unit 11 performs positioning using the orbit information of each GPS satellite included in the navigation message demodulated by the demodulation unit. You may make it perform the process which calculates and calculates a user's position.

The impact determination unit 12 acquires detection data (acceleration data) of the acceleration sensor 21, and determines whether or not the magnitude of impact applied to the user exceeds a predetermined threshold based on the detection data (acceleration data). Process. For example, since a large acceleration is applied to the user due to the impact at the time of avalanche collision, the magnitude of the impact can be determined from the magnitude of the acceleration. FIG. 5 is a diagram illustrating an example of acceleration applied to the user when the user encounters an avalanche. In FIG. 5, the horizontal axis represents the position of the user, and the vertical axis represents the acceleration. Moreover, each position shown in FIG. 1 is shown on the horizontal axis of FIG. As shown in FIG. 5, if the user is involved in an avalanche at position P ₀ , a large acceleration is applied to the user due to the collision of the avalanche, and then the user moves to the slope of the mountain (positions P ₁ , P ₂ with a substantially constant acceleration). , P ₃ ), and stops at position P _n . Thus, since a large acceleration is applied at the moment when the user receives an impact due to an avalanche, in this embodiment, the impact determination unit 12 calculates the acceleration applied to the user based on the detection data of the acceleration sensor 22, It is determined whether or not the magnitude of impact applied to the user exceeds a predetermined threshold depending on whether or not the acceleration exceeds the threshold A.

  When the impact determination unit 12 determines that the magnitude of the impact applied to the user exceeds the threshold, the movement trajectory calculation unit 13 determines whether the position calculation unit 11 is based on detection data of various sensors included in the sensor group 20. A process of calculating a movement trajectory until the user stops using the position of the user calculated at a given timing (for example, the latest position of the user calculated before the user receives an avalanche impact) is performed. In short, the movement trajectory calculation unit 13 calculates the movement trajectory after the user is involved in the avalanche.

  The altitude calculation unit 14 obtains detection data (atmospheric pressure data) of the atmospheric pressure sensor 24 and performs a process of calculating the altitude of the user (particularly the altitude of the user's distress position) based on the detection data (atmospheric pressure data). For example, the altitude calculation unit 14 can calculate the altitude from the atmospheric pressure using the equation (1). Further, for example, if the position calculation unit 11 can calculate a three-dimensional position including the altitude, the altitude calculation unit 14 uses the equation (3) and immediately before the user is involved in the avalanche (adds to the user). The altitude difference between the position immediately before the impact magnitude exceeds the threshold value and the stop position (distress position) is calculated, and the information calculated by the altitude difference and the user calculated by the position calculation unit 11 immediately before being involved in the avalanche The altitude of the distress position of the user may be calculated from the position altitude information.

  The rescue information generation unit 15 includes a user position calculated by the position calculation unit 11 at a given timing (for example, the latest user position calculated before the user receives an avalanche impact), and a movement trajectory calculation unit 13 Based on the calculated movement trajectory of the user, the stop position of the user is estimated, and the rescue information including the information on the stop position is generated. In addition to the stop position (distress position), the rescue information may include, for example, information such as the time of the distress, the magnitude of the shock at the time of distress, the elapsed time since the distress, the posture of the user after the distress, etc. .

  The time measurement unit 16 performs a process of measuring an elapsed time after the impact determination unit 12 determines that the magnitude of the impact applied to the user has exceeded a predetermined threshold.

  The communication control unit 17 performs processing for controlling data communication performed with another rescue signal transmission device 2 via the communication unit 30. In particular, in the present embodiment, the communication control unit 17 performs a process of transmitting a rescue signal including rescue information generated by the rescue information generating unit 15. Further, the communication control unit 17 performs a process of receiving a rescue signal transmitted by another rescue signal transmission device 2.

  The display control unit 18 performs processing for controlling display on the display unit 38. In particular, in the present embodiment, the display control unit 18 performs a process for causing the display unit 38 to display information included in the rescue signal received from another rescue signal transmission device 2.

  The sound output control unit 19 performs processing for controlling the output of the sound output unit 40. In particular, in the present embodiment, the sound output control unit 19 performs a process of causing the sound output unit 40 to output an alarm sound when an impact exceeding a threshold is applied to the user by the impact determination unit 12. Moreover, the sound output control part 19 performs the process which makes the sound output part 40 stop the output of an alarm sound, when predetermined | prescribed operation which cancels | releases an alarm sound is performed with respect to the operation part 32. FIG.

  The recording medium 36 is a computer-readable recording medium. In particular, in the present embodiment, a program for causing the computer to function as each unit described above is stored. Then, the processing unit (CPU) 10 of the present embodiment executes a program stored in the recording medium 36, so that the position calculation unit 11, the impact determination unit 12, the movement locus calculation unit 13, the altitude calculation unit 14, It functions as a rescue information generation unit 15, a time measurement unit 16, a communication control unit 17, a display control unit 18, and a sound output control unit 19. Alternatively, the program is received from a server connected to a wired or wireless communication network via a communication unit (not shown), and the received program is stored in the storage unit 34 or the recording medium 36 to execute the program. It may be. However, the position calculation unit 11, the impact determination unit 12, the movement locus calculation unit 13, the altitude calculation unit 14, the rescue information generation unit 15, the time measurement unit 16, the communication control unit 17, the display control unit 18, and the sound output control unit 19. You may implement | achieve at least one part with a hardware (dedicated circuit).

  The recording medium 36 can be realized by, for example, an optical disk (CD, DVD), a magneto-optical disk (MO), a magnetic disk, a hard disk, a magnetic tape, or a memory (ROM, flash memory, etc.).

  In the present embodiment, the storage unit 30 or the recording medium 32 stores, in particular, information on its own unique identification number and correspondence information between the unique identification number of each other rescue signal transmission device 2 and the name of each user. Yes. Therefore, when the rescue signal transmitter 2 receives the unique identification number from the other rescue signal transmitter 2, the rescue signal transmitter 2 can identify the user of the other rescue signal transmitter 2 by referring to the corresponding information. It has become.

1-3. Processing of rescue support system [Transmission processing of rescue signal transmitter]
FIG. 6 is a diagram illustrating an example of a flowchart of the transmission of a rescue signal by the processing unit (CPU) 10 of the rescue signal transmission device 2 and the process associated therewith.

  First, the processing unit (CPU) 10 receives a GPS signal via the GPS antenna 50 and starts positioning calculation (S10). Thereafter, the processing unit (CPU) 10 periodically receives the latest GPS signal, performs positioning calculation, and repeatedly performs the process of calculating the latest position (latitude / longitude) of the user.

  Next, the processing unit (CPU) 10 acquires the detection data (acceleration data) of the acceleration sensor 21, and calculates the acceleration applied to the user (S12). The calculated acceleration information is stored in the storage unit 34, the recording medium 36, or the like.

  Next, the processing unit (CPU) 10 determines whether or not the acceleration calculated in step S12 is larger than the threshold A (S14).

  When the acceleration is greater than the threshold A (Y in S14), the processing unit (CPU) 10 then outputs an alarm sound from the sound output unit 40 and starts measuring elapsed time and calculating the user's movement trajectory. (S16).

  Next, the processing unit (CPU) 10 determines whether or not the user has stopped (S18). For example, the processing unit (CPU) 10 determines that the user has stopped when the acceleration (acceleration excluding gravitational acceleration) calculated from the detection data (acceleration data) of the acceleration sensor 21 becomes 0 (almost 0). Alternatively, it may be determined that the user has stopped when the angular velocity calculated from the detection data (angular velocity data) of the gyro sensor 22 becomes 0 (almost 0), or acceleration (acceleration excluding gravitational acceleration). ) And the angular velocity both become 0 (almost 0), it may be determined that the user has stopped. Further, the processing unit (CPU) 10 determines whether the detection data (atmospheric pressure data) of the atmospheric pressure sensor 24 has become constant (substantially constant) in addition to the conditions of acceleration and angular velocity (that is, whether the altitude has become constant). )) As an additional condition, it may be determined whether or not the user has stopped.

  When the processing unit (CPU) 10 determines that the user has stopped (Y in S18), the position immediately before the user receives the impact (Y of S14 is calculated by the positioning calculation based on the GPS signal immediately before becoming Y in S14). The user's stop position (latitude / longitude) is estimated from the position) and the user's movement trajectory (S20). Specifically, the processing unit (CPU) 10 can estimate the stop position by following a movement trajectory from the position immediately before the user receives an impact until the user stops. Information on the estimated stop position and the movement trajectory of the user is stored in the storage unit 34, the recording medium 36, or the like.

  Next, the processing unit (CPU) 10 calculates the altitude and posture of the user's stop position (S22). The calculated altitude and posture information is stored in the storage unit 34, the recording medium 36, or the like.

  Next, the processing unit (CPU) 10 performs an operation of canceling the alarm sound (the alarm sound output in step S16) on the operation unit 32 until the predetermined grace time elapses (before Y in S26). If the release operation is not performed within the grace period (N in S24 and Y in S26), the rescue information is generated and the rescue information including the rescue information and the unique identification number is included. A signal is transmitted (S28). This rescue information includes, for example, information such as the time of the distress, the position and altitude where the distress occurred, the magnitude of the shock at the time of the distress, the elapsed time since the distress, the posture of the user after the distress, etc. It is stored in the medium 36 or the like.

  On the other hand, when the acceleration calculated in step S12 is equal to or less than the threshold A (N in S14) or when a release operation is performed within the grace period (Y in S24), the processing unit (CPU) 10 generates the rescue information. Also, the rescue signal transmission process is not performed. For example, even when the user simply falls or when the user is involved in an avalanche but escapes by himself, the acceleration applied to the user exceeds the threshold A (Y in S14) and the alarm sound is output (S16) However, if the rescue is unnecessary, the user can prevent the rescue signal from being transmitted by performing the alarm sound canceling operation.

  Next, the processing unit (CPU) 10 performs an operation of ending the measurement of the elapsed time after the user has encountered the operation unit 32 (the elapsed time since the acceleration was determined to exceed the threshold A in S14). Is determined (S30), and when the operation is performed (Y in S30), the measurement of the elapsed time after the user's distress is terminated, and the measurement result of the elapsed time is stored in the storage unit 34 or recorded. It saves in the medium 36 etc. (S32). For example, when a rescuer (another user) finds a lost user, the user performs a predetermined operation on the rescue signal transmission device 2 carried by the lost user and ends the elapsed time measurement so that the user is lost. It is possible to save information about the time required to be rescued.

  Then, the processing unit (CPU) 10 repeats the processes of S10 to S32 every time a predetermined time elapses (Y of S36) until the process ends (Y of S34).

  The processing unit (CPU) 10 may display information such as the posture of the user and the elapsed time after the distress on the display unit 38.

[Receiving process of rescue signal transmitter]
FIG. 7 is a diagram illustrating an example of a flowchart of the reception of the rescue signal by the processing unit (CPU) 10 of the rescue signal transmission device 2 and the process associated therewith.

  First, the processing unit (CPU) 10 switches from the transmission mode to the reception mode in accordance with an operation on the operation unit 32 by the user (S50). For example, when the user knows that an avalanche has occurred in the vicinity, the rescue signal transmission device 2 is switched to the reception mode by receiving the rescue signal by operating the operation unit 32.

  Then, when the processing unit (CPU) 10 receives the rescue signal from any other rescue signal transmission device 2 (Y in S52), the user of the other rescue signal transmission device 2 that has transmitted the rescue signal (ie, the rescue signal transmission device 2) , Information on the victim is generated (S54 to S60).

  First, the processing unit (CPU) 10 identifies the victim from the information of the unique identification number included in the rescue signal (S54). Specifically, the processing unit (CPU) 10 refers to the correspondence information between the unique identification number of each rescue signal transmission device 2 stored in the storage unit 30 or the recording medium 32 and the name of each user, and receives it. A user who matches the unique identification number included in the rescue signal is identified.

  Next, the processing unit (CPU) 10 calculates the reception intensity of the rescue signal (S56), receives a GPS signal from the GPS satellite 5, and performs positioning calculation (S58). By this positioning calculation, the current position of the user is calculated.

  Further, the processing unit (CPU) 10 acquires the detection data of the atmospheric pressure sensor 24 and calculates the altitude difference from the victim (S60). Specifically, the processing unit (CPU) 10 calculates the altitude from the detection data of the atmospheric pressure sensor 24 using the formula (1), and the altitude at which the distress was lost from the rescue information included in the received rescue signal. Extract information and calculate the altitude difference from the victim.

  Next, the processing unit (CPU) 10 displays information on the victim on the display unit 38 (S62). 8A and 8B show examples of screens displayed on the display unit 38. FIG. FIG. 8A shows an example of the screen of the first page, and FIG. 8B shows an example of the screen of the second page (screen displayed by scrolling up the screen of the first page). In the example of FIG. 8A and FIG. 8B, as information about the distress, the name information of the distress (identified in step S54), the elapsed time after the distress, the current attitude of the distress, and the distress Each information of the current position of the person (both included in the rescue information received in step S52), information on the current position of the user (calculated in step S58), information on the reception intensity of the rescue signal (calculated in step S56) Information on the altitude difference from the victim (calculated in step S60) is displayed on the display unit 38. In particular, information on the current position of the user and the current position of the victim is displayed as an image (the current position of the self is displayed as a circle and the current position of the victim is displayed as a mark), and is updated in real time.

  Then, the processing unit (CPU) 10 repeats the processes of S50 to S62 every time a predetermined time elapses (Y of S66) until the process ends (Y of S64).

  The user of the rescue signal transmission device 2 that has received the rescue signal by such processing can rescue the victim while viewing the information displayed on the display unit 38 in step S62. Specifically, the user goes to rescue while confirming the direction of the victim from the relative relationship between the current location of the subject and the current location of the victim, and detects the location where the reception intensity becomes maximum when approaching the victim. Thus, it is possible to specify the exact position where the victim is buried. During this time, the user can determine the life of the distress from the time elapsed after the distress, the distress's posture (the posture buried in the snow), whether the posture changes (whether the distress can move), etc. The risk can be grasped. Then, the user grasps the depth of the person who is buried in the snow from the information on the altitude difference from the person who is suffering, and pays attention to the posture of the person who is suffering. You can dig up snow with care not to pierce your head, and rescue the victim quickly and safely.

  As described above, in the rescue support system of the first embodiment, the rescue signal transmission device 2 repeatedly performs the process of calculating the position of the user by receiving the GPS signal, and the magnitude of the impact applied to the user is predetermined. If the threshold is exceeded, the user's latest position is used as the starting point to calculate the movement trajectory until the user stops, and the user's stop position (latitude / longitude) is estimated by following the movement trajectory. A rescue signal including information on the position (distress position) is transmitted. That is, the rescue signal transmission device 2 receives the satellite signal before the user is involved in the avalanche and calculates the latest, even if the user is involved in the avalanche and cannot receive the GPS signal. Since the distress position of the user can be estimated from the position information and the information of the movement trajectory of the user after being involved in the avalanche, the distress position information can be reliably transmitted.

  Further, in the rescue support system of the first embodiment, the rescue signal transmission device 2 transmits a rescue signal including information on the stop position (latitude / longitude) of the user who has suffered, and information on the altitude of the stop position. The user of the other rescue signal transmission device 2 that has received the rescue signal can specify a more accurate distress position of the distress and can perform quick rescue.

  Moreover, in the rescue support system of 1st Embodiment, since the rescue signal transmission apparatus 2 transmits the rescue signal containing the information of the elapsed time after a user suffered, the other rescue signal transmission apparatus which received this rescue signal The second user can determine the risk of the victim's life and perform appropriate rescue according to the risk of the victim.

  Further, in the rescue support system of the first embodiment, the rescue signal transmission device 2 stores the 21 detection data of the acceleration sensor, the information on the movement trajectory of the distress, the elapsed time after the distress, etc. in the storage unit 34, etc. A rescuer, a hospital doctor, or the like who rescued the victim can read the information and analyze it to determine the status of the victim and take appropriate measures.

2. Second Embodiment 2-1. Outline of Rescue Support System In the rescue support system according to the second embodiment, a rescue signal transmission device acquires biological information of a user who has suffered a disaster and transmits a rescue signal including biological information along with the position and altitude information of the user. The rescue signal transmission device 2 of the other user who has acted together with the lost user 3 displays the biometric information together with the accurate position and altitude information of the user who has suffered by receiving the rescue signal. The other user can be expected to rescue quickly while recognizing the risk of life of the user who has suffered with reference to the information displayed on the rescue signal transmission device 2.

2-2. Configuration of Rescue Support System The overall configuration of the rescue support system of the second embodiment is the same as that of the first embodiment (FIG. 2), and therefore illustration and description thereof are omitted.

[Configuration of rescue signal transmitter]
FIG. 9 is a diagram illustrating a configuration example of the rescue signal transmission device according to the second embodiment. The rescue signal transmission device of the present embodiment may have a configuration in which some of the components (each unit) in FIG. 9 are omitted or changed, or other components are added.

  As shown in FIG. 9, the rescue signal transmitter 2 of the second embodiment is similar to the first embodiment (FIG. 4) in that the processing unit (CPU) 10, the sensor group 20, the communication unit 30, the operation unit 32, A storage unit 34, a recording medium 36, a display unit 38, a sound output unit 40, and a GPS antenna 50 are included. The rescue signal transmission device 2 of the present embodiment may have a configuration in which some of these components (each unit) are omitted or changed, or other components are added. Each configuration and function of the communication unit 30, the operation unit 32, the storage unit 34, the recording medium 36, the display unit 38, the sound output unit 40, and the GPS antenna 50 are the same as those in the first embodiment (FIG. 4). Description is omitted.

  The sensor group 20 includes an acceleration sensor 21, a gyro sensor (angular velocity sensor) 22, a geomagnetic sensor 23, an atmospheric pressure sensor 24, and a biological information sensor 25. The sensor group 20 of the present embodiment may have a configuration in which some of these components (parts) are omitted or changed, or other components are added. The configurations and functions of the acceleration sensor 21, the gyro sensor (angular velocity sensor) 22, the geomagnetic sensor 23, and the atmospheric pressure sensor 24 are the same as those in the first embodiment (FIG. 4), and thus the description thereof is omitted.

  In the rescue signal transmission device 2 of the present embodiment, a biological information sensor 25 (an example of a biological information detection unit) is added to the configuration of the first embodiment (FIG. 4).

  The biological information sensor 25 detects a user's biological information. The user's biological information is a heart rate, a pulse rate, a respiration rate, or a blood pressure. A dedicated sensor may be used as the biological information sensor 25. For example, the acceleration sensor 21 is used to detect the movement of the user's chest and the like, and the processing unit (CPU) 10 detects the heartbeat from the detection data of the acceleration sensor 21. The number may be calculated. Alternatively, a microphone may be provided as the biological information sensor 25, and the processing unit (CPU) 10 may calculate the heart rate and the respiratory rate from the user's heart sound and respiratory sound detected by the microphone.

  The processing unit (CPU) 10 performs various types of calculation processing and control processing similar to those in the first embodiment according to programs stored in the storage unit 34 and the recording medium 36. In particular, in the present embodiment, the processing unit (CPU) 10 is similar to the first embodiment in that the position calculation unit 11, the impact determination unit 12, the movement locus calculation unit 13, the altitude calculation unit 14, the rescue information generation unit 15, A time measurement unit 16, a communication control unit 17, a display control unit 18, and a sound output control unit 19 are included. However, the processing unit (CPU) 10 of the present embodiment may have a configuration in which some of these configurations (elements) are omitted or changed, or other configurations (elements) are added.

  The functions of the position calculation unit 11, the impact determination unit 12, the movement locus calculation unit 13, the altitude calculation unit 14, the time measurement unit 16, the communication control unit 17, the display control unit 18, and the sound output control unit 19 are the same as those in the first embodiment. Since this is the same, the description thereof is omitted.

  The rescue information generating unit 15 performs a process of generating a rescue signal including the user's biological information together with the stop position (distress position) of the user who has fallen. Rescue information includes information on the stop position (distress position) and biological information, as well as information such as the time of the distress, the magnitude of the shock at the time of the distress, the elapsed time since the distress, and the posture of the user after the distress. You may make it.

2-3. Processing of rescue support system [Transmission processing of rescue signal transmitter]
FIG. 10 is a diagram illustrating an example of a flowchart of the transmission of the rescue signal by the processing unit (CPU) 10 of the rescue signal transmission device 2 and the process associated therewith. In FIG. 10, steps that perform the same processing as in the first embodiment (FIG. 6) are denoted by the same reference numerals.

  First, the processing unit (CPU) 10 performs the processes of steps S10 to S22 as in the first embodiment (S10 to S22 in FIG. 6).

  Next, the processing unit (CPU) 10 acquires the biometric information of the user and stores it in the storage unit 34 or the recording medium 36 (S23).

  Next, the processing unit (CPU) 10 performs the processes of steps S24 to S28 as in the first embodiment (S24 to S28 in FIG. 6). However, in this embodiment, the processing unit (CPU) 10 in step S28, the time when the user was lost, the position and altitude where the user was lost, the magnitude of the shock at the time of the loss, the elapsed time after the loss, In addition to information such as the posture of the user, rescue information including the user's biological information acquired in step S23 is generated.

  Next, the processing unit (CPU) 10 performs the processes of steps S30 and S32 as in the first embodiment (S30 and S32 in FIG. 6).

  Then, the processing unit (CPU) 10 repeats the processes of S10 to S32 every time a predetermined time elapses (Y of S36) until the process ends (Y of S34).

  Note that the processing unit (CPU) 10 may display information such as the posture of the user, the elapsed time after the distress, and the biological information of the user on the display unit 38.

[Receiving process of rescue signal transmitter]
The flowchart of the reception of the rescue signal by the processing unit (CPU) 10 of the rescue signal transmission device 2 and the processing accompanying this in the present embodiment is the same as that of the first embodiment (FIG. 7). Omitted. In this embodiment, in step S62, the processing unit (CPU) 10 includes the name information of the distress (specified in step S54), the elapsed time after the distress, and the present time of the distress as information about the distress. Information of the current position of the victim and the current position (both included in the rescue information received in step S52), information on the current position of the user (calculated in step S58), information on the reception intensity of the rescue signal ( In addition to information on altitude difference from the victim (calculated in step S60), etc., the user's biological information (included in the rescue information received in step S52) is displayed on the display unit 38. indicate.

  The user of the rescue signal transmission device 2 that has received the rescue signal by such processing can rescue the victim while viewing the information displayed on the display unit 38 in step S62.

  The rescue support system according to the second embodiment described above has the same effects as the rescue support system according to the first embodiment.

  Moreover, in the rescue support system of 2nd Embodiment, since the rescue signal transmission device 2 transmits the rescue signal containing a victim's biological information, the user of the other rescue signal transmission device 2 which received this rescue signal, Quick rescue can be performed while considering the risk of life of the victim.

  In the rescue support system of the second embodiment, the rescue signal transmission device 2 stores the victim's biological information in the storage unit 34 or the like, so that the rescuer who rescued the victim, the doctor in the hospital, etc. By reading and analyzing the biological information, it is possible to determine the risk of life of the victim and take appropriate measures according to the risk.

3. Third Embodiment 3-1. Outline of Rescue Support System In the rescue support system according to the third embodiment, the rescue signal transmission device automatically detects each user's distress when a plurality of users are simultaneously damaged and suffered. Send a rescue signal. For example, as shown in FIG. 11, an aircraft caused an explosion accident in the air and arrived at a snowy mountain, so that a plurality of users 3 each carrying the rescue signal transmission device 2 of the present embodiment were scattered on the slope of the snowy mountain. Or, when it is buried in snow, each rescue signal transmission device 2 automatically detects the distress of the user 3 by using various sensors, calculates the position, and calculates the distress position information and biological information. Send a rescue signal including. Each rescue signal transmitter 2 receives a rescue signal transmitted by another rescue signal transmitter 2 and displays information such as the distress position and severity of each user 3. The user 3 who is slightly injured can take emergency measures and the like in preference to the user 3 who is highly likely to be saved with reference to the information displayed on the rescue signal transmitter 2.

3-2. Configuration of rescue support system [Overall configuration]
FIG. 12 is a diagram illustrating a configuration example of the rescue support system according to the third embodiment. The rescue support system of the present embodiment may have a configuration in which some of the components (each unit) in FIG. 12 are omitted or changed, or other components are added.

  As shown in FIG. 12, the rescue support system 1 of the third embodiment includes a plurality of rescue signal transmitters 2.

  Each rescue signal transmitter 2 is attached to each user, detects that the user has received an impact due to aircraft matters, etc., and automatically transmits a rescue signal including information such as the exact position and altitude of the injured user To do.

  Also, each rescue signal transmitter 2 that has not transmitted a rescue signal receives the rescue signal transmitted by each of the other plurality of rescue signal transmitters 2 and displays information on each user who has suffered.

  Since the configuration of the rescue signal transmitter of the third embodiment is the same as that of the second embodiment (FIG. 9), illustration and description thereof are omitted. However, in the rescue signal transmission device 2 of the third embodiment, the processing of the processing unit (CPU) 10 is different from that of the second embodiment.

3-3. Processing of rescue support system [Transmission processing of rescue signal transmitter]
FIG. 13 is a diagram illustrating an example of a flowchart of the transmission of a rescue signal by the processing unit (CPU) 10 of the rescue signal transmission device 2 and the process associated therewith. In FIG. 10, steps that perform the same processing as in the first embodiment (FIG. 6) are denoted by the same reference numerals.

  First, the processing unit (CPU) 10 receives a GPS signal via the GPS antenna 50 and starts positioning calculation (S10). Thereafter, the processing unit (CPU) 10 periodically receives the latest GPS signal, performs positioning calculation, and repeatedly performs the process of calculating the latest position (latitude / longitude) of the user.

  Next, the processing unit (CPU) 10 acquires the detection data (acceleration data) of the acceleration sensor 21, and calculates the acceleration applied to the user (S12). The calculated acceleration information is stored in the storage unit 34, the recording medium 36, or the like.

  Next, the processing unit (CPU) 10 acquires detection data (atmospheric pressure data) of the atmospheric pressure sensor 24 and calculates an atmospheric pressure change amount (S13). Information on the calculated atmospheric pressure change amount is stored in the storage unit 34 or the recording medium 36.

  Next, the processing unit (CPU) 10 determines whether or not the acceleration calculated in step S12 is larger than the threshold A (S14). In other words, the processing unit (CPU) 10 compares the magnitude of impact received by the user with the magnitude of impact assumed when the accident occurs, and determines whether there is a possibility of an aircraft accident.

  When the acceleration is larger than the threshold A (Y in S14), the processing unit (CPU) 10 next determines whether or not the atmospheric pressure change amount calculated in step S13 is larger than the threshold B (S15). When the atmospheric pressure change amount is larger than the threshold value B (Y in S15), the processing unit (CPU) 10 then performs the processes in steps S16 to S28 as in the second embodiment (S16 to S28 in FIG. 10). Do. On the other hand, when the atmospheric pressure change amount calculated in step S13 is equal to or less than the threshold B (N in S15), the processing unit (CPU) 10 does not perform the processes in steps S16 to S28.

  It is conceivable that a part of the aircraft body is damaged due to an explosion in the air or an accidental landing, and the atmospheric pressure in the aircraft drops rapidly. On the other hand, when the aircraft is greatly shaken by being involved in turbulence, or when a minor accident occurs in the aircraft, it is considered that the amount of change in atmospheric pressure is small. Therefore, the processing unit (CPU) 10 finally determines whether or not an accident requiring rescue has occurred based on the amount of change in atmospheric pressure, and generates rescue information and transmits a rescue signal as necessary.

  Next, the processing unit (CPU) 10 performs the processes of steps S30 and S32 as in the second embodiment (S30 and S32 in FIG. 10).

  Then, the processing unit (CPU) 10 repeats the processes of S10 to S32 every time a predetermined time elapses (Y of S36) until the process ends (Y of S34).

  Note that the processing unit (CPU) 10 may display information such as the posture of the user, the elapsed time after the distress, and the biological information of the user on the display unit 38.

[Receiving process of rescue signal transmitter]
FIG. 14 is a diagram illustrating an example of a flowchart of reception of a rescue signal by the processing unit (CPU) 10 of the rescue signal transmission device 2 and processing associated therewith.

  First, the processing unit (CPU) 10 switches from the transmission mode to the reception mode in accordance with an operation on the operation unit 32 by the user (S50). For example, when an aircraft causes an explosion accident in the air and arrives at a snowy mountain, the rescue signal transmission device 2 can switch to the reception mode and receive the rescue signal by operating the operation unit 32 by a lightly injured user. become.

  And the process part (CPU) 10 will receive the rescue signal from the some other rescue signal transmission device 2 (Y of S52), and the user (namely, distress) of each rescue signal transmission device 2 which transmitted the said rescue signal (S54-S60).

  The processing unit (CPU) 10 first specifies each victim from the information of the unique identification number included in each rescue signal (S54). Specifically, the processing unit (CPU) 10 refers to the correspondence information between the unique identification number of each rescue signal transmission device 2 stored in the storage unit 30 or the recording medium 32 and the name of each user, and receives it. Each user that matches the unique identification number included in each rescue signal is identified.

  Next, the processing unit (CPU) 10 calculates the reception intensity of each rescue signal (S56), receives a GPS signal from the GPS satellite 5, and performs positioning calculation (S58). By this positioning calculation, the current position of the user (a user with minor injury) is calculated.

  Furthermore, the processing unit (CPU) 10 acquires the detection data of the atmospheric pressure sensor 24, and calculates the altitude difference from each distress using Equation (1) (S60).

  Next, the processing unit (CPU) 10 determines the severity of each distress from the biometric information of each distress included in each rescue signal received in step S52. For example, the processing unit (CPU) 10 can determine the severity of each victim according to how much the heart rate, pulse rate, respiratory rate, blood pressure, etc. of each victim has decreased. .

  Next, the processing unit (CPU) 10 displays information on the victim on the display unit 38 (S62). For example, the processing unit (CPU) 10 may display on the display unit 38 a screen showing the position and severity of each victim as shown in FIG. In the example of FIG. 15, the position of each victim is indicated by a circle, and the color of the circle is changed according to the severity. For example, if the user operates the operation unit 32 and selects one circle mark, for example, a display screen that displays information on each victim as shown in FIG. 8A or FIG. You may make it switch to. A user with minor injuries can look for such a display and search for a victim who seems to be helped, and give priority to rescue.

  Then, the processing unit (CPU) 10 repeats the processes of S50 to S62 every time a predetermined time elapses (Y of S66) until the process ends (Y of S64).

  The user of the rescue signal transmission device 2 (slightly injured user) who has received the rescue signal by such processing searches for the victim who is likely to be saved while looking at the information displayed on the display unit 38 in step S62, and gives priority. You can go to rescue.

  The rescue support system of the third embodiment described above has the same effects as the rescue support system of the first embodiment.

  Moreover, in the rescue support system of 3rd Embodiment, the rescue signal transmission device 2 transmits the rescue signal containing a victim's biometric information, and the other rescue signal transmission device 2 which received this rescue signal is a victim's Since the severity is determined from the biological information and the severity is displayed, the user of the other rescue signal transmission device 2 can perform an appropriate rescue operation while taking the severity into consideration. For example, when there are a plurality of victims, the user can compare the severity of each victim and take measures such as preferentially rescue the victims who may be helped.

4). The present invention is not limited to this embodiment, and various modifications can be made within the scope of the present invention.

[Modification 1]
In the present embodiment, when the user receives an impact due to an avalanche or an aircraft accident, the rescue signal transmission device 2 outputs an alarm sound. However, the user may be able to cancel the alarm sound. Then, when the alarm sound canceling operation is performed by the user, the rescue signal transmitting device 2 may transmit information indicating that the canceling operation has been performed to another rescue signal transmitting device 2. In this way, it is possible to notify other users that the user is safe at the user's will, for example, when the user is damaged but is slightly injured, or when the user is erroneously determined to be damaged. .

[Modification 2]
In the present embodiment, the time measuring unit 16 of the processing unit (CPU) 10 of the rescue signal transmission device 2 measures the elapsed time after the impact determining unit 12 determines that the user has received a strong impact with a plurality of timers. Each timer may end the measurement and store the measurement result by performing different operations on the operation unit 32. For example, the first timer measures and stores the time until the user is rescued after being shocked (until the rescuer finds the user and performs a predetermined operation), and the second timer You may make it measure and preserve | save the time after a user receives a shock until it is conveyed to a hospital (a rescuer or a doctor of a hospital performs predetermined operation after a user arrives at a hospital). Thereby, not only the information of time required for rescue but also the information of time required for transport to the hospital can be collected.

  In addition, an information terminal (personal computer, etc.) installed in a hospital and a rescue signal transmitter 2 are provided with a connector having the same special shape, and the connector of the rescue signal transmitter 2 is connected to the connector of the information terminal. Information at the time of the user's distress stored in the transmission device 2 may be displayed on the information terminal. Furthermore, the second timer ends measurement and saves the measurement result when the connector of the rescue signal transmission device 2 is connected to the connector of the information terminal instead of performing a predetermined operation on the operation unit 32. You may make it do. In this way, it is possible to reliably collect information on the time required for transportation to the hospital.

[Modification 3]
In the present embodiment, the rescue signal transmission device 2 is set to the transmission mode in the initial state, but is set to the reception mode in the initial state, and the processing unit (CPU) uses the detection data of various sensors to allow the user to When it is determined that the vehicle has been lost, the rescue signal may be transmitted by automatically switching to the transmission mode. The rescue signal transmission device 2 may be set to an intermittent reception mode for intermittently checking whether or not a rescue signal is received. Moreover, the rescue signal transmission device 2 may be set in a sleep mode in which processing other than the intermittent reception processing is stopped until it is determined that the user has suffered. As a result, power consumption, which is a problem particularly in portable electronic devices, can be greatly reduced.

[Modification 4]
In the process (FIG. 13) by the processing unit (CPU) 10 of the rescue signal transmission device 2 of the third embodiment, the acceleration calculated in step S12 is larger than the threshold A or the atmospheric pressure change amount calculated in step S13 is When the value is larger than the threshold value B, the process may be changed to a fail-safe process so that the processes in steps S16 to S28 are performed.

[Modification 5]
In the present embodiment, the rescue signal transmission device 2 that has received the rescue signal transmits the information included in the received rescue signal to another information terminal installed in the standby area of the rescue team via a satellite communication line or the Internet. You may make it forward to. In this way, the rescue team can quickly go to rescue the victim.

  In the present embodiment, the description has been given by taking as an example a distress caused by an avalanche or an aircraft accident. However, the present invention can be applied to a case where the user is distressed for other reasons.

  The present invention includes configurations that are substantially the same as the configurations described in the embodiments (for example, configurations that have the same functions, methods, and results, or configurations that have the same objects and effects). In addition, the invention includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced. In addition, the present invention includes a configuration that exhibits the same operational effects as the configuration described in the embodiment or a configuration that can achieve the same object. Further, the invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

DESCRIPTION OF SYMBOLS 1 Rescue support system, 2 Rescue signal transmission apparatus, 3 User, 4 Avalanche, 5 GPS satellite, 10 Processing part (CPU), 11 Position calculation part, 12 Impact determination part, 13 Movement locus calculation part, 14 Altitude calculation part, 15 Rescue information generation unit, 16 time measurement unit, 17 communication control unit, 18 display control unit, 19 sound output control unit, 20 sensor group, 21 acceleration sensor, 22 gyro sensor, 23 geomagnetic sensor, 24 barometric pressure sensor, 25 biological information sensor , 30 communication unit, 32 operation unit, 34 storage unit, 36 recording medium, 38 display unit, 40 sound output unit, 50 GPS antenna

Claims (11)

A GPS antenna unit that receives a GPS radio signal and obtains the position of the user;
A sensor unit that outputs detection data indicating the acceleration, posture, and orientation of the user;
An impact determination unit for determining whether the magnitude of impact applied to the user exceeds a predetermined threshold;
A stop determination unit that determines whether or not the user has stopped ;
When the magnitude of the impact applied to the user exceeds the predetermined threshold, the sensor unit starts from the user's stop position acquired from the user position acquired by the GPS antenna unit until the user stops. A processing unit that calculates based on the detection data output by
Rescue support device including . In claim 1,
Including a rescue information generator for generating rescue information including information on the stop position of the user,
A rescue support apparatus for transmitting a rescue signal including the rescue information. In claim 1 or 2,
The sensor unit is
Including an acceleration sensor,
The impact determination unit
A rescue support apparatus that determines whether or not the magnitude of an impact applied to the user exceeds the predetermined threshold using detection data of the acceleration sensor. In claim 3,
The sensor unit is
Including geomagnetic sensors,
The processor is
A rescue support apparatus that calculates the stop position of the user using detection data of the acceleration sensor and detection data of the geomagnetic sensor. In claim 2,
An altitude calculation unit for calculating the altitude of the user;
The rescue information generator is
A rescue support apparatus that generates the rescue information including altitude information of the stop position of the user. In claim 5,
The sensor unit is
Including a barometric sensor,
The altitude calculator is
A rescue support device that calculates the altitude of the user using detection data of the barometric sensor. In any one of Claims 1 thru | or 6,
A rescue support apparatus including a time measuring unit that measures an elapsed time from a given timing after the magnitude of an impact applied to the user exceeds the predetermined threshold. In any one of Claims 1 thru | or 7,
A rescue support apparatus including a biological information detection unit that detects biological information of the user. In claim 2,
A rescue support apparatus that receives the rescue signal transmitted by another rescue support apparatus. In claim 9,
A rescue support apparatus further comprising a severity determination unit that determines the severity of a user who has suffered a distress by using the biological information of the user who has been distressed obtained from the rescue information included in the received rescue signal. Including a plurality of rescue support devices according to claim 9 or 10,
The first rescue support device transmits the rescue signal,
A rescue support system, wherein the second rescue support apparatus receives the rescue signal.

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