CN115512517A - Positioning system for underwater rescue service - Google Patents
Positioning system for underwater rescue service Download PDFInfo
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- CN115512517A CN115512517A CN202110695936.0A CN202110695936A CN115512517A CN 115512517 A CN115512517 A CN 115512517A CN 202110695936 A CN202110695936 A CN 202110695936A CN 115512517 A CN115512517 A CN 115512517A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000523 sample Substances 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 7
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- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000005236 sound signal Effects 0.000 claims description 7
- 239000003643 water by type Substances 0.000 abstract description 4
- 238000002604 ultrasonography Methods 0.000 description 8
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- 238000010586 diagram Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 206010013647 Drowning Diseases 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
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- 230000036760 body temperature Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/08—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water
- G08B21/088—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water by monitoring a device worn by the person, e.g. a bracelet attached to the swimmer
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/016—Personal emergency signalling and security systems
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/02—Non-electrical signal transmission systems, e.g. optical systems using infrasonic, sonic or ultrasonic waves
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Abstract
The application relates to a positioning system for underwater rescue service, and belongs to the technical field of underwater positioning. The positioning system includes: the system comprises a wearable device, a plurality of ultrasonic probes and a control device; the wearable device is used for responding to the detection of the triggering operation of the help-seeking option arranged on the wearable device and transmitting a first ultrasonic signal; the ultrasonic detector is arranged in the target water area and used for sending first distress information to the control equipment based on the received first ultrasonic signal; the control device is the control device that the target waters belongs to, and the control device is used for positioning the wearable device based on the first distress information. In the above scheme, even if the rescue workers do not find the target object which is being called for help during patrol, the wearable device can be positioned through the control device based on the ultrasonic signal, so that timely rescue of the target object is realized, and the rescue efficiency is improved on the basis that the life and property safety of the target object is guaranteed.
Description
Technical Field
The embodiment of the application relates to the technical field of underwater positioning, in particular to a positioning system for underwater rescue service.
Background
At present, with the improvement of living standard, people can play at seaside in leisure time. If people drown or other emergencies in the seawater, the people can ask for help by means of loud help or help-asking actions (such as swinging the arms and the like). And rescue workers at seaside rescue the help-seeking person when finding the help-seeking person in the patrol process. However, since the environment in the sea is complex, the distress sound of the person seeking help is easily covered by the environmental noise, and the underwater distress action is difficult to be identified, so that the person seeking help is difficult to be found in time only by the patrol of the rescue personnel, the rescue efficiency is low, and the life and property loss of the person seeking help can be caused.
Disclosure of Invention
The embodiment of the application provides a positioning system for underwater rescue service, and rescue efficiency can be improved. The positioning system includes: the system comprises a wearable device, a plurality of ultrasonic probes and a control device;
the wearable device is a device worn by a target object and is used for responding to the detection of the triggering operation of a help-seeking option arranged on the wearable device and transmitting a first ultrasonic signal;
the ultrasonic detector is arranged in a target water area and used for sending first help-seeking information to the control equipment based on the received first ultrasonic signal;
the control device is a control device to which the target water area belongs, and the control device is used for positioning the wearable device based on the first distress information.
In this application embodiment, because the wearable equipment that the target object was dressed can launch ultrasonic signal, consequently, the target object can be through triggering wearable equipment transmission ultrasonic signal and carrying out the SOS when target object moves about in the target waters, like this, even the rescue personnel do not discover the target object of asking for help when patrolling, also can fix a position this wearable equipment based on this ultrasonic signal through controlgear to realize the timely rescue to the target object, and then on the basis of the life and property safety of having ensured the target object, improved rescue efficiency.
Drawings
Fig. 1 shows a schematic view of a positioning system for underwater rescue services shown in an exemplary embodiment of the present application;
FIG. 2 is a schematic diagram illustrating a method of determining location information according to an exemplary embodiment of the present application;
FIG. 3 illustrates a schematic diagram of a positioning system for underwater rescue services shown in an exemplary embodiment of the present application;
fig. 4 shows a schematic view of a positioning system for underwater rescue services according to an exemplary embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
It should be noted that, the user information (including but not limited to user device information, user personal information, etc.) and data referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
An embodiment of the present application provides a positioning system for underwater rescue service, and please refer to fig. 1, which illustrates a schematic diagram of a positioning system for underwater rescue service according to an exemplary embodiment of the present application.
The positioning system includes a wearable device, a control device, and a plurality of ultrasound probes. In some embodiments, the wearable device is connected to each ultrasound probe via ultrasound signal communication, and the control device is electrically connected to each ultrasound probe, or connected via a network.
The wearable device is a device worn by a target object and used for responding to the detection of the triggering operation of a distress option arranged on the wearable device and transmitting a first ultrasonic signal;
the ultrasonic detector is arranged in the target water area and used for sending first distress information to the control equipment based on the received first ultrasonic signal;
the control device is the control device that the target waters belongs to, and the control device is used for positioning the wearable device based on the first distress information.
The wearable device can be a bracelet, underwater glasses or underwater head-mounted device, a life jacket, a safety pendant or other devices which can be carried underwater for ultrasonic communication and are wearable. The control device may be provided as a terminal or a server, which is not particularly limited in this application.
The target water area can be any one of the water areas such as ocean, river, lake, canal, channel, reservoir, pond and the like. The ultrasonic detector can be arranged at the target position of the target water area; the target location may be shore of the target body of water or underwater.
The wearable device is provided with a help-seeking option for requesting rescue service in advance, and one point to be described is that the help-seeking option can be any one of an entity option or a virtual option; accordingly, the wearable device includes a display screen, and the virtual options may be displayed on the display screen of the wearable device. The triggering mode of the help-seeking option can be set and changed according to needs, which is not specifically limited in the application; for example, the triggering manner may be any one of a long press, a single click, or a double click. For example, the distress option may be a distress button.
In the embodiment of the application, when the target object moves in the target water area, if the target object encounters an emergency, for example, drowning, discomfort in body, and the like, a distress option on the wearable device may be triggered. Correspondingly, the wearable device generates a transmitting instruction in response to the detection of the triggering operation of the help-seeking option arranged on the wearable device; in response to the transmit instruction, a first ultrasonic signal is transmitted.
In the embodiment, as the wearable device is provided with the help-seeking option, when the target object requests the rescue service, only the help-seeking option needs to be triggered, and the help-seeking operation is simple and easy to implement.
In some embodiments, the target subject may mistakenly touch the distress option of the wearable device worn during the activity, and therefore, when the wearable device detects the triggering operation of the distress option, it may also determine whether the distress option is mistakenly touched by combining the vital signs of the target subject. If the target object is determined not to have the option of asking for help by mistake, transmitting a first ultrasonic signal; and if the target object is determined to be mistakenly touched with the help-seeking option, continuing to detect the triggering operation of the help-seeking option.
In a possible implementation manner, the wearable device is further configured to acquire a vital sign of the target subject in response to detecting a trigger operation on a distress option set on the wearable device, and transmit a first ultrasonic signal if the vital sign is matched with a preset vital sign.
The vital signs may include at least one of heart rate, body temperature, or blood pressure. The wearable device stores preset vital signs in advance; the preset vital signs indicate that the target object in the vital signs has a demand for requesting rescue service. Correspondingly, when the vital signs of the target object are obtained, the wearable device compares the vital signs with preset vital signs; if the vital signs are matched with the preset vital signs, the target object does not mistakenly touch the help-seeking option; and if the vital signs are not matched with the preset vital signs, the target object is indicated to mistakenly touch the help-seeking option.
In the implementation manner, if the target object is in a drowned state, the vital sign of the target object is changed greatly compared with the vital sign under a normal condition, so that the wearable device can determine whether the target object has a demand for requesting rescue service by combining the vital sign, and the accuracy of information determination is higher.
In another possible implementation manner, the wearable device is further configured to detect a current action of the target object in response to detection of a trigger operation on a distress option set on the wearable device, and transmit a first ultrasonic signal if the action is matched with a preset action.
Wherein the current action of the target object detected by the wearable device can be represented in the form of sensor data; for example, if an acceleration sensor is disposed in the wearable device, the sensor data may be data collected by the acceleration sensor; or an angular velocity sensor is arranged in the wearable device, the sensor data can be data collected by the angular velocity sensor; further alternatively, the sensor data includes at least data acquired by an acceleration sensor, data acquired by an angular velocity sensor, and the like, and the present application is not particularly limited thereto.
For example, the target subject drowns or encounters other emergencies, the target subject may make struggling movements, such as a quick arm-waving or leg-kicking movement. Correspondingly, the preset action is the action preset by the wearable device.
In the implementation mode, a technician can simulate actions which a target object may make when struggling in a water area in advance, collect sensor data collected by the wearable device when making the actions, associate the sensor data with the actions, and use the associated information as the preset actions.
Correspondingly, when the wearable device detects the current action of the target object, the sensor data corresponding to the action can be matched with the sensor data corresponding to the preset action; if the sensor data corresponding to the action is matched with the sensor data corresponding to the preset action, the target object does not have a help-seeking option by mistake; and if the sensor data corresponding to the action is not matched with the sensor data corresponding to the preset action, the target object is indicated to be touched with the help-seeking option by mistake.
In the implementation mode, the target object may make a help seeking action when drowning or meeting other emergency situations, so that whether the target object has a requirement for requesting rescue service currently can be determined in time by identifying the current action of the target object, and the accuracy of information determination is higher.
In the embodiment of the application, since a plurality of other target objects may exist in the water area where the target object is located, the target object may also request the rescue service for the plurality of other target objects, and accordingly, the wearable device is further configured to play an audio signal for requesting the rescue service, and the audio signal is used for requesting the other objects to perform the rescue service for the target object.
The content contained in the audio signal is not particularly limited, and for example, the content contained in the audio signal may be "save life", "please save me", and the like.
In the embodiment of the application, the audio signal for requesting the rescue service is played, so that other target objects near the target object can rescue the target object in time, the time for the target object to wait for rescue is saved, and the life and property safety of the target object is guaranteed to a greater extent.
In some embodiments, the first ultrasonic signal carries a distress identification; the control device is further used for determining that the first ultrasonic signal is the target object and actively triggers the wearable device to transmit the first ultrasonic signal based on the help-seeking identification.
The help-seeking identification can be a key value bound with information used for indicating that the target object has the requirement of requesting the rescue service. Correspondingly, the help-seeking information generated by the ultrasonic detector receiving the first ultrasonic signal also comprises a help-seeking identifier; when the control equipment receives the help-seeking information, the control equipment can determine that the target object has the requirement of requesting rescue service at present according to the information bound by the help-seeking identification.
The key value corresponding to the distress identity can be set and changed according to needs, which is not specifically limited in the application; for example, the key may be 1, 2, 3, or the like.
In the embodiment of the application, the first ultrasonic signal carries the distress identification, so that the control device can determine that the target object currently requests rescue service according to the distress identification, the rescue service can be rapidly provided for the target object, and the rescue speed is accelerated.
In this application embodiment, the first distress message carries a first time and a second time, the first time is a time when the wearable device transmits the first ultrasonic signal, and the second time is a time when the ultrasonic detector receives the first ultrasonic signal. Each ultrasonic detector comprises at least one antenna unit for receiving and transmitting ultrasonic signals, and each antenna unit corresponds to one first help seeking message.
Correspondingly, the control device is used for determining the distance between each antenna unit and the wearable device based on the first time and the second time carried by each first distress message and the transmission speed of the ultrasonic signal;
determining an orientation of the wearable device compared to each antenna unit based on a distance between each antenna unit and the wearable device and a distance between each two antenna units;
and combining the distance between each antenna unit and the wearable device and the position of the wearable device compared with each antenna unit to form the position information of the wearable device.
Wherein, the transmission speed is the transmission speed of the ultrasonic signal in the target water area, and the transmission speed can be measured in advance. It should be noted that in the embodiment of the present application, the wearable device and the clock of the ultrasound probe need to be kept consistent to ensure that the first time and the second time are recorded accurately.
For any antenna unit, for example, if the difference between the first time and the second time is 0.05 seconds, the transmission speed is 1500 meters per second, and the distance between the antenna unit and the wearable device is 0.05 × 1500=75 meters.
In a possible implementation manner, for any antenna unit, the first distress message may further include a phase of the first ultrasonic signal when the first ultrasonic signal reaches the antenna unit; correspondingly, the control device is further configured to convert a phase difference between phases corresponding to any two antenna units into a distance difference, where the distance difference is a difference between distances between the wearable device and the two antenna units, respectively; for any one of any two antenna units, determining a distance between the antenna unit and the wearable device based on the first time and the second time corresponding to the antenna unit; for another antenna unit of any two antenna units, a distance between the other antenna unit and the wearable device is determined based on the distance difference and the distance.
In the embodiment of the present application, the control device may be implemented by any one of the above implementations, that is, the control device may determine the distance between the antenna unit and the wearable device by a Time Difference of Arrival (TDOA) or a Phase Difference of Arrival (PDOA), which is not particularly limited in this application.
The distance between the wearable device and each antenna unit is also the length of a connecting line between the wearable device and each antenna unit, and the distance between two antenna units is also the length of a connecting line between the two antenna units; because the lengths of the three connecting lines are known, the control device can determine the included angle between the three connecting lines according to the lengths of the three connecting lines, and because the installation position of the detector is known, the orientation information of the wearable device compared with each antenna unit can be determined.
The display mode of the azimuth information is not particularly limited in the present application; for example, the orientation information may be 35 degrees east partial south or 60 degrees west partial south, etc.
Referring to fig. 2, taking a and B as ultrasound detectors, each of which includes an antenna unit, C as a wearable device for example, the distance AB is known, the distances AC and BC can be determined based on the first time and the second time and the propagation speed of the ultrasound, and the angle α can be determined according to the distances AB, AC and BC, and if the angle α =45 degrees, the orientation information of the wearable device C with respect to the ultrasound detector a is 45 degrees north-east.
In the embodiment of the application, on one hand, the distance between the antenna unit of the ultrasonic detector and the wearable device can be determined based on the time difference and the speed of ultrasonic transmission between the antenna unit and the wearable device, so that the position of the wearable device is determined by combining the distance, the position information of the target object is further determined, and the accuracy of position determination is high; on the other hand, each ultrasonic detector comprises at least one antenna unit, so that the control equipment can position the target object even if only one ultrasonic detector is in the current range, and the applicability of the scheme is high.
In some embodiments, the control device may generate a navigation path for the user performing the rescue service, so that the user performing the rescue service goes to a location where the target object is located; correspondingly, the control device is further used for generating a navigation path based on the position information of the wearable device and the current position information of the user for rescue service, and the navigation path is used for enabling the user for rescue service to reach the position indicated by the position information of the wearable device based on the navigation path.
In this embodiment, there may be multiple users performing rescue services in the target water area, and the control device is further configured to prompt the user performing rescue services closest to the target object to perform rescue based on the position information of the target object and the current position information of the user performing rescue services. The user performing rescue service can rescue the target object based on the rescue equipment; the rescue device may be a lifeboat, a life jacket, or the like, which is not limited in this application. For example, taking a user performing rescue service as a rescuer and rescue equipment as a lifeboat as an example, the rescuer can drive the lifeboat to rescue a target object.
In the embodiment of the application, the navigation path to the target object is determined, so that the user performing the rescue service does not need to determine the path by himself, the time spent by the user performing the rescue service to go to the target object is saved, and the rescue efficiency is improved.
For example, referring to fig. 3, a target water area is an offshore water area, a control device is a safety control center, a user performing rescue service is taken as a rescue worker for example, a plurality of ultrasonic detectors are arranged on the shore of the target water area, a target object actively triggers wearable devices worn by the target object to transmit a first ultrasonic signal, the ultrasonic detectors send first help-seeking information to the control device based on the first ultrasonic signal, the control device prompts the rescue worker that the current target object needs to be rescued based on the first help-seeking information, and the rescue worker rescues the target object based on the rescue device.
In some embodiments, since there may be multiple target objects wearing wearable devices in the target water area, the first ultrasonic signal may also carry a device identification of the wearable device that emitted the first ultrasonic signal. Correspondingly, the ultrasonic detector sends first distress information to the control equipment based on the received first ultrasonic signal, and the first distress information also comprises equipment identification, so that the control equipment can distinguish the wearable equipment based on the equipment identification.
The device identifier may be an Identity Document (ID) of the wearable device.
In some embodiments, the first ultrasonic signal also carries posture characteristic information of the target object, and the posture characteristic information is used for identifying the target object by a user performing rescue service.
Wherein, the posture characteristic information may include at least one of sex, age, appearance characteristic and the like. In this embodiment, since there may be a plurality of other target objects in the water area where the target object is located, the user performing the rescue service may identify the target object to be rescued from the plurality of target objects in the water area based on the posture characteristic information.
In one possible implementation manner, the wearable device stores the body state feature information of the target object in advance. Correspondingly, the wearable device is used for responding to the trigger operation of detecting the help-seeking option arranged on the wearable device, acquiring the posture characteristic information, generating a first ultrasonic signal based on the posture characteristic information, and transmitting the first ultrasonic signal.
In the embodiment of the application, the first ultrasonic signal carries the posture characteristic information of the target object, so that a user performing rescue service can quickly determine the target object to be rescued from a plurality of target objects by combining the posture characteristic information, and the rescue speed is accelerated.
In other embodiments, in a case that the first ultrasonic signal further carries a device identifier of a wearable device that transmits the first ultrasonic signal, the control device may further determine the body state characteristic information of the target object based on the device identifier, so that in this case, the first ultrasonic signal does not need to carry the body state characteristic information of the target object.
Correspondingly, the control device is further configured to determine, from the correspondence between the device identifier of the wearable device and the body state feature information of the object to which the wearable device belongs, which corresponds to the device identifier carried by the first ultrasonic signal.
In this embodiment, for a plurality of wearable devices in the positioning system, the control device stores in advance a correspondence between a device identifier of each wearable device and the body state feature information of the object to which the wearable device belongs. Therefore, the control equipment can determine the body state characteristic information of the target object only by the equipment identification, and therefore the first ultrasonic signal does not need to carry the body state characteristic information of the target object.
In this application embodiment, the wearable device is further configured to periodically transmit a second ultrasonic signal if the triggering operation for the distress option is not detected.
Wherein the second ultrasonic signal does not carry a distress mark. The period of the wearable device transmitting the second ultrasonic signal may be set and changed as needed, which is not specifically limited in the present application; for example, the period may be 1 minute, 5 minutes, or 10 minutes, etc.
Correspondingly, the ultrasonic detector is also used for sending second help-seeking information to the control equipment based on the received second ultrasonic signal;
the control device is further used for responding to the first area, located in the target water area, of the wearable device based on the second help seeking information, outputting prompt information, wherein the first area is an area where entry is forbidden, and the prompt information is used for prompting a user performing rescue service to rescue the target object.
The target water area includes a first area and a second area, the second area is an area allowing access, for example, the first area is a dangerous area, and the second area is a safe area. In the embodiment of the application, the wearable device can periodically transmit the second ultrasonic signal, that is, the second ultrasonic signal is periodically transmitted, so that the control device can periodically locate the target object to which the wearable device belongs.
Since the target object is most likely to encounter a danger in the first area, the control device can prompt the user for rescue to rescue the target object when the control device is positioned that the target object is in the first area.
In this embodiment, the second distress message carries a third time and a fourth time, the third time is a time when the wearable device transmits the second ultrasonic signal, and the fourth time is a time when the ultrasonic detector receives the second ultrasonic signal. Correspondingly, the implementation mode of the control device for positioning the wearable device based on the second distress message is similar to the implementation mode of the control device for positioning the wearable device based on the first distress message, and is not repeated here.
In some embodiments, the control device is further configured to send a warning request to any of the ultrasonic detectors in response to the positioning of the wearable device in the first area of the target water area based on the second distress information, the warning request is used for requesting any of the ultrasonic detectors to transmit a third ultrasonic signal, the third ultrasonic signal carries at least warning information, and the warning information is used for warning the target object;
and the wearable device is also used for receiving a third ultrasonic signal transmitted by any ultrasonic detector and warning the target object based on the warning information.
The control device may send a warning request to each ultrasonic detector, so that each ultrasonic detector transmits a third ultrasonic signal, so that the wearable device worn by the target object can receive the third ultrasonic signal in time.
In the embodiment of the application, after the position information of the target object is determined, whether the target object is in the first area or not is judged, so that even if the target object does not actively trigger the wearable device to send the first ultrasonic signal, the control device can determine whether the target object has a requirement for requesting rescue service or not in time, the ultrasonic detector sends a warning request to the ultrasonic detector, the ultrasonic detector sends the third ultrasonic signal, the target object is warned to leave the first area and return to the second area, and therefore on the basis of improving the timeliness of rescue, the life and property safety of the target object is effectively guaranteed.
For example, referring to fig. 4, a target water area is an offshore water area, a control device is a safety control center, a user performing rescue service is taken as a rescue worker for example, a plurality of ultrasonic detectors are arranged on the shore of the target water area, a wearable device worn by a target object transmits a second ultrasonic signal at regular time, the ultrasonic detectors transmit second help-seeking information to the control device based on the second ultrasonic signal, the control device determines that the target object is currently located in a first area based on the second help-seeking information, prompts the rescue worker that the current target object needs to be rescued, and the rescue worker rescues the target object based on the rescue device.
In some embodiments, since there may be multiple target objects wearing wearable devices in the target water, the second ultrasonic signal may also carry a device identification of the wearable device that transmitted the second ultrasonic signal. Correspondingly, the ultrasonic detector sends the second distress message to the control device based on the received second ultrasonic signal, and the second distress message also comprises a device identifier, so that the control device can distinguish the wearable device based on the device identifier.
Correspondingly, the warning request sent by the control equipment carries the equipment identifier of the wearable equipment to be warned; the third ultrasonic signal also carries the equipment identification of the wearable equipment to be warned; and the wearable device is also used for responding to the condition that the device identification of the wearable device to be warned is the same as the device identification of the wearable device worn by the target object, and warning the target object based on the warning information.
In this embodiment, the wearable device is further configured to discard the alert information in response to the device identifier of the wearable device to be alerted being different from the device identifier of the wearable device worn by the target object.
In this embodiment, the device identifier is determined before the warning to determine whether the current device is a wearable device to be warned, so that unnecessary warning can be avoided, interference to other target objects can be reduced, and the warning accuracy can be improved.
In one possible implementation, a wearable device is used for outputting warning information.
The implementation manner of outputting the warning information by the wearable device is not particularly limited in the present application. Optionally, the wearable device may vibrate for a preset duration.
The preset duration can be set and changed according to needs, which is not specifically limited in the present application; for example, the preset time period may be 10s, 20s, 1 minute, or the like. In this implementation, after it is determined that the target object enters the first area, the target object is warned by outputting warning information, so that the warning manner is simpler.
In another possible implementation, the third ultrasonic signal further carries a target direction and a target distance, the target direction is a direction for leaving the first area, the target distance is a travel distance required for entering a second area of the target water area according to the target direction, and the second area is an area allowing entry;
the wearable device is also used for continuously outputting warning information; and stopping outputting the warning information in response to the target object traveling in the target direction and the target distance until the target object enters the second area.
The target direction and the target distance are determined by the control equipment according to the position information obtained by positioning after the wearable equipment is positioned. For example, the target direction may be left, right, forward, or backward, and the target distance may be 2 meters, 4 meters, or 5 meters, and the like.
In the embodiment of the application, the target direction and the target distance of the target object are informed while the target object is warned to enter the first area, so that the target object does not need to automatically judge the mode of exiting the first area and entering the second area, and the efficiency of entering the second area by the target object is further improved.
In the embodiment of the application, a safety area network of a target water area is constructed by arranging a plurality of ultrasonic detectors, so that the control device can monitor the position information and the motion trail of the wearable device in real time, and can automatically warn and remind rescue workers to confirm and rescue when the wearable device is detected to enter a first area.
In this application embodiment, because the wearable equipment that the target object was worn can launch ultrasonic signal, consequently, the target object can be through triggering wearable equipment transmission ultrasonic signal and carry out the SOS when target object moves about in the target waters, like this, even the rescue personnel do not find the target object of SOS when patrolling, also can be based on the wearable equipment of ultrasonic signal location through controlgear to realize the timely rescue to the target object, and then on the basis of having ensured target object's life and property safety, improved rescue efficiency.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more program codes or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (11)
1. A positioning system for underwater rescue services, the positioning system comprising: the system comprises a wearable device, a plurality of ultrasonic probes and a control device;
the wearable device is a device worn by a target object and is used for responding to the detection of the triggering operation of a help-seeking option arranged on the wearable device and transmitting a first ultrasonic signal;
the ultrasonic detector is arranged in a target water area and used for sending first help-seeking information to the control equipment based on the received first ultrasonic signal;
the control device is a control device to which the target water area belongs, and the control device is used for positioning the wearable device based on the first help seeking information.
2. The positioning system of claim 1, wherein the wearable device is further configured to periodically transmit a second ultrasonic signal if a triggering operation of the distress option is not detected;
the ultrasonic detector is further used for sending second distress information to the control equipment based on the received second ultrasonic signal;
the control device is further configured to output prompt information in response to the fact that the wearable device is located in a first area of the target water area based on the second help-seeking information, the first area is an area where entry is forbidden, and the prompt information is used for prompting a user performing rescue service to rescue the target object.
3. The positioning system of claim 2, wherein the control device is further configured to send a warning request to any of the ultrasonic detectors in response to positioning the wearable device in the first area of the target water area based on the second distress message, the warning request requesting that any of the ultrasonic detectors transmit a third ultrasonic signal, the third ultrasonic signal carrying at least warning information for warning the target object;
the wearable device is further configured to receive a third ultrasonic signal transmitted by any one of the ultrasonic detectors, and warn the target object based on the warning information.
4. The location system of claim 3, wherein the third ultrasonic signal also carries a device identification of a wearable device to be alerted; the wearable device is further configured to warn the target object based on the warning information in response to that the device identifier of the wearable device to be warned is the same as the device identifier of the wearable device worn by the target object.
5. The positioning system of claim 3, wherein the third ultrasonic signal further carries a target direction and a target distance, the target direction being a direction for exiting the first area, the target distance being a travel distance required to enter a second area of the target body of water in the target direction, the second area being an area of permitted entry;
the wearable device is further used for continuously outputting the warning information; stopping outputting the warning information in response to the target object traveling in the target direction and the target distance until the target object enters the second area.
6. The positioning system according to claim 1, wherein the wearable device is further configured to, in response to detecting a triggering operation on a distress option set on the wearable device, obtain a vital sign of the target subject, and transmit the first ultrasonic signal if the vital sign matches a preset vital sign; or,
the wearable device is further used for responding to the detection of the trigger operation of the help-seeking option set on the wearable device, detecting the current action of the target object, and if the action is matched with the preset action, transmitting the first ultrasonic signal.
7. The positioning system of claim 1, wherein the first ultrasonic signal carries a distress flag; the control device is further configured to determine that the first ultrasonic signal actively triggers the wearable device to transmit for the target object based on the distress identity.
8. The positioning system of claim 1, wherein the wearable device is further configured to play an audio signal for requesting rescue services, the audio signal being used to request other objects to perform rescue services on the target object.
9. The positioning system of claim 1, wherein the first ultrasonic signal further carries posture characteristic information of the target object, the posture characteristic information being used for identifying the target object by a user performing rescue service.
10. The positioning system of claim 1, wherein the first distress message carries a first time and a second time, the first time being a time when the wearable device transmits the first ultrasonic signal, the second time being a time when the ultrasonic probe receives the first ultrasonic signal;
each ultrasonic detector comprises at least one antenna unit for receiving and transmitting ultrasonic signals, and each antenna unit corresponds to first distress information;
the control device is used for determining the distance between each antenna unit and the wearable device based on the first time and the second time carried by each first distress message and the transmission speed of the ultrasonic signal;
determining an orientation of the wearable device compared to each antenna unit based on a distance between the each antenna unit and the wearable device and a distance between each two antenna units;
and composing the distance between each antenna unit and the wearable device and the position of the wearable device compared with each antenna unit into position information of the wearable device.
11. The positioning system of claim 10, wherein the control device is further configured to generate a navigation path for the rescue service user to reach the position indicated by the position information of the wearable device based on the navigation path, based on the position information of the wearable device and the current position information of the rescue service user.
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