CN112634594A - Personnel social contact approach reminding method and system based on UWB technology - Google Patents
Personnel social contact approach reminding method and system based on UWB technology Download PDFInfo
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- CN112634594A CN112634594A CN202011525419.0A CN202011525419A CN112634594A CN 112634594 A CN112634594 A CN 112634594A CN 202011525419 A CN202011525419 A CN 202011525419A CN 112634594 A CN112634594 A CN 112634594A
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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
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
- G08B21/245—Reminder of hygiene compliance policies, e.g. of washing hands
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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Abstract
The invention discloses a staff social contact approach reminding method based on UWB technology, which comprises the following steps: s1, starting a monitoring receiving state of a UWB electronic tag carried by a user; s2, judging whether the UWB electronic tag carried by the user receives data frames sent by UWB electronic tags carried by other users within a first preset time, if not, executing a step S3; s3, closing the monitoring receiving state, sending a data frame of the UWB electronic tag carried by the user, and reentering the monitoring receiving state; s4, judging whether the UWB electronic tag carried by the user receives reply frames sent by UWB electronic tags carried by other users within second preset time, and if so, calculating the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the sent reply frame; and S5, judging whether the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the reply frame sent back is smaller than a short-distance reminding preset threshold value or not, and if so, sending reminding information to the user.
Description
Technical Field
The invention relates to the technical field of wireless communication and Internet of things, in particular to a staff social proximity reminding method and system based on UWB technology.
Background
In some special occasions (such as hospitals under new crown epidemic situations), people gather quite frequently, and other problems are easy to occur in the gathering process, so that people in the special occasions need to keep a proper distance, and most of the current technical schemes of the internet of things can select a short-distance wireless communication technology. Short-distance wireless communication technologies commonly used at present include a bluetooth technology, a WIFI technology, an RFID radio frequency tag, NFC near field communication and the like, and sometimes an infrared communication technology is classified into this category.
For example, patent publication No. CN111885490A discloses a method for social distance reminding, which includes: acquiring terminal positioning signals of all users, and generating a position thermodynamic diagram according to all the terminal positioning signals; judging whether the social distance between the current user and other users is smaller than a distance threshold value or not according to the position thermodynamic diagram; and if so, outputting first prompt information with too small social distance. The above patent generates the position thermodynamic diagram according to all terminal positioning signals, then judges whether the social distance between the current user and other users is smaller than a distance threshold value according to the position thermodynamic diagram, and outputs a first prompt message that the social distance is too small when the social distance is smaller than the distance threshold value, so as to remind the user to keep a reasonable social distance when the social distance between the user and other users exceeds a normal range, avoid trampling accidents to the maximum extent, and prevent infection of diseases at the same time. Although the above patent can remind the distance between persons, it is judged according to the position thermodynamic diagram, and the calculation is complicated. Therefore, the invention provides a staff social approach reminding method and system based on UWB technology.
Disclosure of Invention
The invention aims to provide a staff social approach reminding method and system based on UWB technology, which are suitable for special occasions requiring proper distance between staff, such as a ward of a new coronary intensive care patient in a hospital part during a new coronary epidemic situation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a personnel social approach reminding method based on UWB technology comprises the following steps:
s1, starting a monitoring receiving state of a UWB electronic tag carried by a user;
s2, judging whether the UWB electronic tag carried by the user receives data frames sent by UWB electronic tags carried by other users within a first preset time, if not, executing a step S3;
s3, closing the monitoring receiving state, sending a data frame of the UWB electronic tag carried by the user, and reentering the monitoring receiving state;
s4, judging whether the UWB electronic tag carried by the user receives reply frames sent by UWB electronic tags carried by other users within second preset time, and if so, calculating the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the sent reply frame;
and S5, judging whether the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the reply frame sent back is smaller than a short-distance reminding preset threshold value or not, and if so, sending reminding information to the user.
Further, in the step S2, it is determined whether the UWB electronic tag carried by the user receives the data frame sent by the UWB electronic tags carried by other users within the first preset time, and if so, the data reply frame is sent back after delaying for a period of time.
Further, the re-entering of the listening receiving state in step S3 includes receiving a data frame sent by a UWB electronic tag carried by another user and/or receiving a reply frame sent by a UWB electronic tag carried by another user.
Further, the step S4 of calculating the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the reply frame is specifically: according to the data frame of the UWB electronic tag carried by the user and the receiving and sending time stamp of the reply frame sent by the UWB electronic tag carried by other users, the TOF time between the UWB electronic tag carried by the user and the tag sending the reply frame is calculated, and the distance between the tag and the UWB electronic tag corresponding to the sent reply frame is obtained by multiplying the TOF time by the light speed.
Further, step S4 includes determining whether a second preset time is reached, and if yes, entering the sleep state of the UWB electronic tag carried by the user.
Further, the delaying for a period of time and then sending back a period of time in the data recovery frame is expressed as:
Td＝Td_id+Td_random
wherein, Td represents the delay time from the UWB electronic tag carried by the user to the UWB electronic tag reply frame carried by the user after the UWB electronic tag carried by the user receives the data frame sent by the UWB electronic tag carried by the other user; td _ ID represents a value obtained by taking the unique ID of the UWB electronic tag carried by the user as a key word and calculating through a hash algorithm; td _ random represents an additional random number in a smaller range.
Further, after entering the sleep state, the UWB electronic tag carried by the user further includes:
and judging whether the sleep time of the UWB electronic tag carried by the user reaches a third preset time, if so, automatically awakening the UWB electronic tag and starting the next wheel distance measurement work.
Further, the reminding manner of sending the reminding information to the user in the step S5 includes flashing of an LED lamp, vibration of a motor, and sounding of a buzzer.
Correspondingly, a personnel social approach reminding system based on the UWB technology is further provided, and the system comprises a personnel social approach reminding method based on the UWB technology.
Further, the UWB electronic tag carried by the user communicates with UWB electronic tags carried by a plurality of other users.
Compared with the prior art, the invention has the beneficial effects that:
1. the system scheme can realize one-to-many free ranging of UWB personnel electronic tags;
2. according to the system scheme, other equipment such as a base station and the like are not required to be installed for assisting work, the layout is convenient and fast, the operation is simple, and the cost is saved;
3. the UWB personnel electronic tags in the scheme can sleep in time in the working period, and the power consumption is reduced.
Drawings
FIG. 1 is a flowchart of a social proximity reminding method for people based on UWB technology according to an embodiment;
FIG. 2 is a schematic diagram of UWB electronic tag signal transmission provided by an embodiment;
FIG. 3 is a schematic diagram of the mutual ranging between multiple tags according to an embodiment;
fig. 4 is a flowchart of a social proximity reminding method for people based on UWB technology according to a second embodiment.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
The invention aims to provide a person social approach reminding method and system based on UWB technology aiming at the defects of the prior art.
Example one
The embodiment provides a social proximity reminding method for people based on UWB technology, as shown in FIG. 1, comprising the steps of:
s1, starting a monitoring receiving state of a UWB electronic tag carried by a user;
s2, judging whether the UWB electronic tag carried by the user receives data frames sent by UWB electronic tags carried by other users within a first preset time, if not, executing a step S3;
s3, closing the monitoring receiving state, sending a data frame of the UWB electronic tag carried by the user, and reentering the monitoring receiving state;
s4, judging whether the UWB electronic tag carried by the user receives reply frames sent by UWB electronic tags carried by other users within second preset time, and if so, calculating the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the sent reply frame;
and S5, judging whether the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the reply frame sent back is smaller than a short-distance reminding preset threshold value or not, and if so, sending reminding information to the user.
In the embodiment, the UWB electronic tag carried by any person can emit its own UWB signal, and can receive UWB signals emitted by UWB electronic tags carried by one or more other persons. As shown in fig. 2, the signal transmission between 3 users is that each user can propagate its own UWB signal, and at the same time, the other 2 users can receive UWB signals sent by the user, and the user can also receive reply signals replied by the 2 users.
In step S1, the listening reception state of the UWB electronic tag carried by the user is turned on.
In some special places (such as hospitals, restaurants and other places where people gather in new crown epidemic situations), when the people enter the corresponding places, each person is worn with a UWB electronic tag.
This embodiment is described by taking a user as an example:
when a current user arrives at a place to be visited, a manager in the place or through other modes enables the user to wear a UWB personnel electronic tag, and in an initial state, the UWB electronic tag carried by the current user is in a monitoring receiving state and used for receiving data frames sent by the UWB electronic tags carried by one or more users.
In step S2, it is determined whether the UWB electronic tag carried by the user receives the data frame transmitted by the UWB electronic tags carried by other users within the first preset time, and if not, step S3 is executed.
When the UWB electronic tag carried by the current user is in the listening receiving state, timing is started at the same time, and it is determined whether a data frame (POLL frame) sent by the UWB electronic tag carried by at least one other user is received within a first preset time T1 (e.g., 500ms), and if the POLL frame sent by the UWB electronic tag carried by the other user is not received within a first preset time T1, step S3 is executed. In step S3, the listening reception state is turned off, and the data frame of the UWB electronic tag itself carried by the user is transmitted, and the listening reception state is re-entered.
When the POLL frame sent by other users is not received in T1, the UWB electronic tag carried by the current user is turned off to monitor the receiving state and sends out the POLL frame itself, and when the sending is completed, the UWB electronic tag of the current user reenters the monitoring receiving state to receive the reply frame sent by other users.
In step S4, it is determined whether the UWB electronic tag carried by the user receives a reply frame sent by the UWB electronic tags carried by other users within a second preset time, and if so, the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the reply frame sent is calculated.
After the user sends out the self POLL frame, the UWB electronic tag enters the monitoring receiving state again, timing is started, whether the UWB electronic tag carried by the user receives a reply frame (RESPONS frame) sent by the UWB electronic tags carried by other users within a second preset time T2 (such as 500ms) is judged, if the RESPONS frame replied by at least one other user is received within the second preset time, whether the timing time exceeds T2 is judged, and if the RESPONS frame does not receive the reply frame, the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the reply frame is calculated; if the timed time exceeds T2, the monitoring receiving state is closed, and the received RESPONS frame replied by at least one other user is processed first, and after the processing is finished, the sleep state is entered to save power consumption.
The time of T1 and T2 may be the same or different, and may be determined according to actual conditions.
In this embodiment, the specific calculation method of the distance is as follows: according to the data frame of the UWB electronic tag carried by the user and the receiving and sending time stamp of the reply frame sent by the UWB electronic tag carried by other users, the TOF time between the UWB electronic tag carried by the user and the tag sending the reply frame is calculated, and the distance between the tag and the UWB electronic tag corresponding to the sent reply frame is obtained by multiplying the TOF time by the light speed.
In this embodiment, when the UWB electronic tag of the current user receives RESPONSE frames transmitted by UWB electronic tags of a plurality of other users, distances between the current user's own tag and each of the other tags are sequentially calculated. The principle of realizing mutual ranging among multiple tags is as follows:
as shown in fig. 3, assuming that uwb tag 1 is a tag carried by a current user, uwb tag 1 enters a listening reception state immediately after sending a POLL broadcast signal frame, and at this time, after receiving POLL broadcast frame information sent by uwb tag 1, other uwb tags (uwb tag 2, uwb tag 3 … … uwb tag N) in the listening reception state respectively delay a period of time to send a RESPONSE reply frame, and after receiving RESPONSE frames replied by other uwb tags, uwb tag 1 can respectively calculate TOF time between uwb tag 1 itself and other uwb tags that have replied the RESPONSE reply frame, and multiply the time by an optical speed to obtain a corresponding distance.
The multi-tag mutual ranging needs to pay attention to the problem of signal frame mutual collision and interference, as shown in fig. 3, after other uwb tags receive the POLL broadcast frame sent by uwb tag 1, the RESPONSE frame is recovered after delaying for different time Td. The recovery delay time Td is obtained by the following equation:
Td＝Td_id+Td_random
the Td is the reply delay time from the receipt of the poll frame sent by the uwb tag 1 by other uwb tags to the reply of the response frame by other uwb tags, and the Td _ ID is the value calculated by the hash algorithm after the unique ID of other uwb tags is used as the key word; td _ random is an additional random number in a smaller range, thereby ensuring that each tag has a recovery delay time Td which is substantially different and which varies with each ranging, and thus greatly reducing the possibility of signal collision when multiple tags are ranging from each other.
In step S5, it is determined whether the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the reply frame sent back is smaller than a short-range alert preset threshold, and if so, alert information is sent to the user; if not, the self POLL frame is continuously monitored or sent.
After the distance between the current tag and other tags is calculated in step S4, it is further determined whether the distance is less than a preset close-range alert threshold (for example, the set safe distance is 3.5 meters), and if the distance calculated in step S4 is less than 3.5 meters, the UWB electronic tag carried by the current user may alert a person wearing the tag in a manner of flashing an LED lamp, vibrating a motor, sounding a buzzer, and the like, and it is necessary to pay attention to the fact that the distance between the surrounding person is too close.
Compared with the prior art, the beneficial effect of this embodiment is:
1. according to the scheme, one-to-many free ranging of the UWB personnel electronic tag can be realized;
2. according to the scheme, other equipment such as a base station does not need to be installed to assist in work, the arrangement is convenient and fast, the operation is simple, and the cost is saved.
Example two
The embodiment provides a social proximity reminding method for people based on UWB technology, as shown in FIG. 4, comprising the steps of:
s1, starting a monitoring receiving state of a UWB electronic tag carried by a user;
s2, judging whether the UWB electronic tag carried by the user receives data frames sent by UWB electronic tags carried by other users within a first preset time, if not, executing a step S3; if yes, delaying for a period of time and then sending back a data recovery frame;
s3, closing the monitoring receiving state, sending a data frame of the UWB electronic tag carried by the user, and reentering the monitoring receiving state;
s4, judging whether the UWB electronic tag carried by the user receives reply frames sent by UWB electronic tags carried by other users within second preset time, and if so, calculating the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the sent reply frame;
and S5, judging whether the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the reply frame sent back is smaller than a short-distance reminding preset threshold value or not, and if so, sending reminding information to the user.
It should be noted that, part of the implementation manners in steps S1-S5 are similar to those in the embodiments, and are not described herein again.
In step S2, when the UWB electronic tag carried by the current user is in the monitoring receiving state, timing is started at the same time, and it is determined whether a POLL frame sent by a UWB electronic tag carried by at least one other user is received in T1, if a POLL frame sent by a UWB electronic tag carried by another user is received in a first preset time T1, it is determined whether the timing time exceeds T1 at the same time, and if not, a data reply frame is sent back after delaying for a period of time; if the timed time exceeds T1, the monitoring state is closed first, the received POLL frame is processed, and after the processing is finished, the data frame of the UWB electronic tag carried by the user is sent.
When the POLL frame sent by the UWB electronic tags carried by other users is received within a first preset time T1, the UWB electronic tag carried by the current user will delay for a period of time and reply to the RESPONS frame, the reply RESPONS frame is sent to other tags in the other tags, which are other tags corresponding to the POLL frame received by the current tag, after the reply is completed, the monitoring state is continued, and meanwhile, whether the monitoring time reaches T1 is continuously determined.
Wherein, a period of time in the frame of the data reply after delaying for a period of time is represented as:
Td＝Td_id+Td_random
wherein, Td represents the delay time from the UWB electronic tag carried by the user to the UWB electronic tag reply frame carried by the user after the UWB electronic tag carried by the user receives the data frame sent by the UWB electronic tag carried by the other user; td _ ID represents a value obtained by taking the unique ID of the UWB electronic tag carried by the user as a key word and calculating through a hash algorithm; td _ random represents an additional random number in a smaller range.
It should be noted that the meaning of the disclosure is the same as that of the formula in the embodiment, and is different from the subject object.
After the UWB electronic tag carried by the current user replies the RESPONS frame, the UWB electronic tag receiving the RESPONS frame calculates the distance between the UWB electronic tag carried by the current user and subsequent operations, and the processing modes of other tags are similar to those in the embodiment and are not described herein.
In step S3, the UWB electronic tag carried by the current user enters the monitoring receiving state again, and after entering the monitoring state, the UWB electronic tag not only receives the RESPONS frame replied by the UWB electronic tags carried by other users, but also receives the POLL frame sent by the UWB electronic tags of other users.
In step S4, after sending out the POLL frame of the user, the user enters the monitoring and receiving state again for the UWB electronic tag, starts timing, determines whether the UWB electronic tag carried by the user receives RESPONS frames sent by UWB electronic tags carried by other users in T2, and if the RESPONS frames replied by other users are not received in the second preset time, the UWB electronic tag carried by the user enters the sleep state, thereby saving power consumption.
In this embodiment, after entering the sleep state, the UWB electronic tag carried by the user further includes:
and judging whether the sleep time of the UWB electronic tag carried by the user reaches a third preset time, if so, automatically awakening the UWB electronic tag and starting the next wheel distance measurement work.
When a UWB electronic tag carried by a user enters a sleep mode, timing is started, whether the sleep time of the UWB electronic tag carried by the user reaches a third preset time T3 (such as 300ms) is judged, if the sleep time reaches T3, the current UWB electronic tag is automatically awakened to start the next round of distance measurement work, and if one-time distance measurement is not completed in the work round before the electronic tag is ready to enter the sleep state, the sleep time T3 is properly reduced to improve the chance of successful distance measurement after awakening.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme, one-to-many free ranging of the UWB personnel electronic tag can be realized;
2. according to the scheme, other equipment such as a base station and the like are not required to be installed for assisting work, the layout is convenient and fast, the operation is simple, and the cost is saved;
3. the UWB personnel electronic tags in the scheme can sleep in time in the working period, and the power consumption is reduced.
EXAMPLE III
The embodiment provides a person social proximity reminding system based on a UWB technology, and comprises a person social proximity reminding method based on the UWB technology in a first embodiment and a second embodiment.
This embodiment all sets up UWB personnel electronic tags on everybody, and wherein UWB personnel electronic tags includes parts such as label casing, battery, master control plate, bee calling organ, motor, LED lamp.
In the present embodiment, the UWB electronic tag carried by the user communicates with UWB electronic tags carried by a plurality of other users.
It should be noted that, the social proximity reminding system for people based on UWB technology provided in this embodiment is similar to the first embodiment and the second embodiment, and is not described herein again.
Compared with the prior art, the invention has the beneficial effects that:
1. the system can realize one-to-many free ranging of UWB personnel electronic tags;
2. the system does not need to be provided with other devices such as a base station and the like to assist in work, is convenient to arrange and simple to operate, and saves cost;
3. the UWB personnel electronic tags in the scheme can sleep in time in the working period, and the power consumption is reduced.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A personnel social approach reminding method based on UWB technology is characterized by comprising the following steps:
s1, starting a monitoring receiving state of a UWB electronic tag carried by a user;
s2, judging whether the UWB electronic tag carried by the user receives data frames sent by UWB electronic tags carried by other users within a first preset time, if not, executing a step S3;
s3, closing the monitoring receiving state, sending a data frame of the UWB electronic tag carried by the user, and reentering the monitoring receiving state;
s4, judging whether the UWB electronic tag carried by the user receives reply frames sent by UWB electronic tags carried by other users within second preset time, and if so, calculating the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the sent reply frame;
and S5, judging whether the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the reply frame sent back is smaller than a short-distance reminding preset threshold value or not, and if so, sending reminding information to the user.
2. The method for reminding people of social proximity based on UWB technology as claimed in claim 1, wherein in step S2, it is determined whether the UWB electronic tag carried by the user receives the data frame sent by the UWB electronic tags carried by other users within a first preset time, and if so, the data reply frame is sent back after delaying for a certain time.
3. The method for reminding people of social proximity based on UWB technology as claimed in claim 1, wherein the re-entering the listening reception state in step S3 includes receiving data frames sent by UWB electronic tags carried by other users and/or receiving reply frames sent by UWB electronic tags carried by other users.
4. The method for reminding people of social proximity based on UWB technology as claimed in claim 1, wherein the step S4 of calculating the distance between the UWB electronic tag carried by the user and the UWB electronic tag corresponding to the reply frame sent back is specifically as follows: according to the data frame of the UWB electronic tag carried by the user and the receiving and sending time stamp of the reply frame sent by the UWB electronic tag carried by other users, the TOF time between the UWB electronic tag carried by the user and the tag sending the reply frame is calculated, and the distance between the tag and the UWB electronic tag corresponding to the sent reply frame is obtained by multiplying the TOF time by the light speed.
5. The method for reminding people of social proximity based on UWB technology as claimed in claim 4, wherein said step S4 further includes determining whether a second preset time is reached, if yes, the UWB electronic tag carried by the user enters a sleep state.
6. The UWB technology based person social proximity reminding method as claimed in claim 2, wherein the time period in the data reply frame after the delay time period is represented as:
Td＝Td_id+Td_random
wherein, Td represents the delay time from the UWB electronic tag carried by the user to the UWB electronic tag reply frame carried by the user after the UWB electronic tag carried by the user receives the data frame sent by the UWB electronic tag carried by the other user; td _ ID represents a value obtained by taking the unique ID of the UWB electronic tag carried by the user as a key word and calculating through a hash algorithm; td _ random represents an additional random number in a smaller range.
7. The social proximity reminding method for people based on UWB technology as claimed in claim 4, wherein the UWB electronic tag carried by the user further comprises, after entering into a sleep state:
and judging whether the sleep time of the UWB electronic tag carried by the user reaches a third preset time, if so, automatically awakening the UWB electronic tag and starting the next wheel distance measurement work.
8. The UWB technology-based social proximity reminding method of claim 1, wherein the reminding manner of sending the reminding information to the user in the step S5 comprises LED lamp flashing, motor vibration and buzzer ringing.
9. A UWB technology based person social proximity reminding system, comprising the UWB technology based person social proximity reminding method of any one of claims 1-8.
10. The system of claim 9, wherein the UWB tag carried by the user communicates with UWB tags carried by a plurality of other users.
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| CN113993077A (en) * | 2021-12-23 | 2022-01-28 | 荣耀终端有限公司 | Prompting method, device, equipment and system based on ultra-wideband UWB communication |
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