CN111343577A - Method for infectious patient tracking and infection risk detection - Google Patents
Method for infectious patient tracking and infection risk detection Download PDFInfo
- Publication number
- CN111343577A CN111343577A CN202010438537.1A CN202010438537A CN111343577A CN 111343577 A CN111343577 A CN 111343577A CN 202010438537 A CN202010438537 A CN 202010438537A CN 111343577 A CN111343577 A CN 111343577A
- Authority
- CN
- China
- Prior art keywords
- client
- service platform
- management service
- clients
- rssi
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
- G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
-
- 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
- H04W4/025—Services making use of location information using location based information parameters
-
- 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
- H04W4/029—Location-based management or tracking services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Multimedia (AREA)
- Databases & Information Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses a method for infectious patient tracking and infection risk detection. The method comprises the following steps: a client logs in a management service platform to obtain an equipment identification code; broadcasting outwards at regular time by adopting a Bluetooth mode, and receiving broadcast data of other clients in real time; regularly sending data such as the equipment identification code of the client, the received equipment identification codes of other clients, RSSI (received signal strength indicator) and the like to a management service platform through the Internet; the management service platform receives data sent by the clients, calculates the distance between the clients based on RSSI (received signal strength indicator), determines the danger level and sends the danger level data to the related clients; and the client receives and displays the danger level data sent by the management service platform. The invention does not need to dispose a large number of Bluetooth beacons, thus reducing the hardware cost; bluetooth information can be exchanged between different clients without Bluetooth connection.
Description
Technical Field
The invention relates to the technical field of wireless communication and ranging, in particular to a method for infectious patient tracking and infection risk detection.
Background
At present, the incidence of infectious diseases is higher and higher, and the harm is larger and larger. In order to ensure the safety of people, the range of motion of infectious patients and suspected infectious patients is limited to different degrees in disease control centers, various hospitals and residential living areas in special periods. This requires the control center to know in real time the activities of the persons involved in the area, such as the distance between the persons involved, especially the distance between the persons involved and the infected patient, and to send an alarm signal to the persons involved if the distance is less than a safe distance.
The prior art generally utilizes bluetooth beacon technology to achieve this. The method comprises the steps that a mobile phone client side provided with an APP scans peripheral specific Bluetooth beacons at regular time under the condition that Bluetooth is started; after the Bluetooth beacon is scanned, relevant information in the Bluetooth beacon is sent to a background server; and the background server counts the information of the personnel passing by the Bluetooth beacon within a certain time and a certain distance according to the identifier of the Bluetooth beacon. The bluetooth beacon method has the following problems: a large amount of bluetooth beacons need to be deployed, so that the cost is high, and the deployment everywhere is difficult.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a method for infectious patient tracking and infection risk detection.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for infectious patient tracking and infection risk detection, comprising the steps of:
step 1, a client logs in a management service platform to obtain an equipment identification code of the client, wherein the client is mobile equipment provided with an APP;
step 2, the client broadcasts outwards at regular time in a Bluetooth mode and receives broadcast data of other clients within a Bluetooth action distance range in real time, wherein the broadcast data comprises a specified service identification and an equipment identification code;
step 3, the client sends the following data to the management service platform through the internet at regular time: the method comprises the steps of receiving a device identification code of a client, a current timestamp, a received device identification code of other clients and received signal strength RSSI (received Signal Strength indication);
step 4, the management service platform receives data sent by the client, calculates the distance between the client A of the infected user and the client B which receives the broadcast data of the client A based on RSSI, determines the danger level according to the distance, and sends the danger level data to the client B;
and 5, receiving and displaying the danger level data sent by the management service platform by the client.
Compared with the prior art, the invention has the following beneficial effects:
the method and the system have the advantages that the client logs in the management service platform to obtain the equipment identification code, broadcasts outwards at regular time in a Bluetooth mode, receives broadcast data of other clients in real time, sends the equipment identification code of the client, the received equipment identification code of other clients, RSSI (received signal strength indicator) and other data to the management service platform at regular time through the Internet, the management service platform receives the data sent by the client, calculates the distance between the clients based on the RSSI and determines the danger level, the danger level data are sent to the relevant clients, the client receives and displays the danger level data sent by the management service platform, and whether the user is safe and the automatic detection of the danger level are realized. The invention does not need to dispose a large number of Bluetooth beacons, thus reducing the hardware cost; bluetooth information can be exchanged between different clients without Bluetooth connection.
Drawings
FIG. 1 is a flow chart of a method for infectious patient tracking and infection risk detection according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention discloses a method for infectious patient tracking and infection risk detection, which is shown in a flow chart in figure 1 and comprises the following steps:
a method for infectious patient tracking and infection risk detection, comprising the steps of:
s101, a client logs in a management service platform to obtain an equipment identification code of the client, wherein the client is mobile equipment provided with an APP;
s102, the client broadcasts outwards at regular time in a Bluetooth mode, and receives broadcast data of other clients within a Bluetooth action distance range in real time, wherein the broadcast data comprises a specified service identification and an equipment identification code;
s103, the client sends the following data to the management service platform at regular time through the Internet: the equipment identification code of the client, the current timestamp, the received equipment identification codes of other clients and the received signal strength RSSI;
s104, the management service platform receives the data sent by the client, calculates the distance between the client A of the infected user and the client B which receives the broadcast data of the client A based on RSSI, determines the danger level according to the distance, and sends the danger level data to the client B.
And S105, the client receives and displays the danger level data sent by the management service platform.
In this embodiment, step S101 is configured to obtain a device identifier of the client through the client login management service platform. The client is a mobile device such as a mobile phone and a tablet computer with the APP installed. Since bluetooth communication is involved, the mobile device should also have bluetooth functionality. The equipment identification code is the unique identification of the client, does not contain any personal information of the user, and is dynamically generated by the management service platform, namely, a different equipment identification code is generated every time login. The device identification code is associated with a handset number registered at the time of registration of the user. Of course, the management service platform also stores information related to the health condition of the user, such as whether the user is an infected user.
In this embodiment, step S102 is used for the client to broadcast outwards at regular time and receive broadcast data of other clients in real time. Communication between clients is actually achieved by broadcasting and receiving broadcast data. In the embodiment, the Bluetooth mode is adopted for broadcasting, the effective action distance is short, and only the broadcast data of other clients in the Bluetooth action distance range can be received. Because the safety distance is not long, the short effective action distance can meet the requirement, and the broadcast data of the client which is too long and cannot threaten the client can be avoided from being received. The content of the broadcast data is simple and contains only one assigned service identification and device identification code. Since the service identifiers in the broadcast data of all the clients are the same, that is, the service identifiers are all the designated service identifiers, after one client receives the broadcast data of other clients, the client only needs to read the designated service identifier first and then extract the subsequent device identifier. Therefore, the client does not need to establish a Bluetooth connection before communication.
In this embodiment, step S103 is used for the client to periodically send data to the management service platform. Because the Bluetooth communication action distance is short, the client communicates with the management service platform through the Internet. The data sent by the client comprises the equipment identification code, the current time stamp, the received equipment identification codes of other clients and the received signal strength RSSI. None of these data relate to the privacy of the user. The magnitude of the RSSI reflects the distance of the client, and the larger the RSSI is, the closer the distance is. The Android mobile phone system or the ios system returns an object through a parameter of a specified callback method, the object comprises an RSSI attribute, and the required Bluetooth RSSI can be obtained by reading the value of the RSSI attribute.
In this embodiment, step S104 is used for the management service platform to determine the risk level according to the data sent by the client. The risk level is determined by the distance from the infected user, the closer the distance, the higher the risk level. The management service platform stores the health state information of the registered user, and whether the user is infected with a disease can be determined according to the mobile phone number associated with the identification code of the client device. The distance between the two clients is calculated based on RSSI.
In this embodiment, step S105 is used for the client to receive and display the danger level data sent by the management service platform. The grade data can be directly displayed; for the sake of intuition, a color display may also be employed. In order to make the user attract attention, a warning signal such as sound or vibration can be emitted at the same time.
The client of the embodiment adopts the portable mobile equipment, and does not need to add other hardware equipment; the communication between the clients is realized through Bluetooth broadcast, and the distance between the clients can be determined according to the RSSI, so that the danger level is determined, a large number of Bluetooth beacons are not required to be deployed, and the hardware cost is reduced. Because the broadcast data of the client contains a designated service identifier, the different clients can exchange Bluetooth information without Bluetooth connection.
As an optional embodiment, the S101 specifically includes:
s1011, the client sends a mobile phone number to the management service platform to apply for a short message verification code;
s1012, the management service platform checks the legality of the mobile phone number, and if the mobile phone number is legal, a short message verification code is sent;
s1013, the client sends the received short message verification code to the management service platform and sends a login request;
s1014, the management service platform verifies the verification code, and if the verification code is legal, the 11-bit equipment identification code is dynamically generated and sent to the client.
The embodiment provides a technical scheme for logging in a management service platform and acquiring the equipment identification code from the management service platform by a client. And the management service platform dynamically generates an 11-bit equipment identification code to the client when the client logs in successfully every time.
As an alternative embodiment, the client and the management service platform mutually transmit encrypted data.
In the embodiment, in order to ensure the security of data communication between the client and the management service platform, the client and the management service platform adopt encrypted communication. The client encrypts the data by using a public key of an RSA algorithm and then sends the encrypted data to the management service platform; the management service platform decrypts the data sent by the client by using the private key of the RSA algorithm. Similarly, a private key of the RSA algorithm of the management service platform encrypts data and sends the encrypted data to the client; the client side decrypts the data sent by the management service platform by using the public key of the RSA algorithm.
As an alternative embodiment, the formula for calculating the distance between two clients based on RSSI is as follows:
d=10-(RSSI-A)/20
in the formula (I), the compound is shown in the specification,dthe unit of the distance between two clients is meter, RSSI is the signal strength of one client receiving the other client, A is the signal strength at the distance of 1 meter, and the units of RSSI and A are dbm.
The embodiment provides a technical scheme for calculating the distance between two clients according to the RSSI. The calculation principle is simple, and the distance corresponding to the RSSI can be obtained by comparing the RSSI with the signal strength A when the distance is 1 meter. The value of a can be obtained by repeated experiments, and a = -59dbm in this example.
As an alternative embodiment, the danger level includes three levels, i.e., high, medium, and low, and the client displays the three levels with red, green, and blue, respectively.
In the present embodiment, the risk level is divided into three, high, medium, low, and so on. The client displays three danger levels of high, medium and low by using three colors of red, green and blue respectively. It should be noted that this embodiment is only a preferred embodiment and does not exclude other possible grading and displaying methods.
The above description is only for the purpose of illustrating a few embodiments of the present invention, and should not be taken as limiting the scope of the present invention, in which all equivalent changes, modifications, or equivalent scaling-up or down, etc. made in accordance with the spirit of the present invention should be considered as falling within the scope of the present invention.
Claims (5)
1. A method for infectious patient tracking and infection risk detection, comprising the steps of:
step 1, a client logs in a management service platform to obtain an equipment identification code of the client, wherein the client is mobile equipment provided with an APP;
step 2, the client broadcasts outwards at regular time in a Bluetooth mode and receives broadcast data of other clients within a Bluetooth action distance range in real time, wherein the broadcast data comprises a specified service identification and an equipment identification code;
step 3, the client sends the following data to the management service platform through the internet at regular time: the equipment identification code of the client, the current timestamp, the received equipment identification codes of other clients and the received signal strength RSSI;
step 4, the management service platform receives data sent by the client, calculates the distance between the client A of the infected user and the client B which receives the broadcast data of the client A based on RSSI, determines the danger level according to the distance, and sends the danger level data to the client B;
and 5, receiving and displaying the danger level data sent by the management service platform by the client.
2. The method for infectious patient tracking and infection risk detection according to claim 1, wherein the step 1 specifically comprises:
step 1.1, the client sends a mobile phone number to the management service platform to apply for a short message verification code;
step 1.2, the management service platform checks the validity of the mobile phone number, and if the mobile phone number is legal, a short message verification code is sent;
step 1.3, the client sends the received short message verification code to the management service platform and sends a login request;
and step 1.4, the management service platform verifies the verification code, and dynamically generates an 11-bit equipment identification code if the verification code is legal and sends the identification code to the client.
3. The method for infectious patient tracking and infection risk detection according to claim 1, wherein the client and the management service platform communicate encrypted data with each other.
4. The method for infectious patient tracking and infection risk detection according to claim 1, wherein the formula for calculating the distance between two clients based on RSSI is as follows:
d=10-(RSSI-A)/20
in the formula (I), the compound is shown in the specification,dthe unit of the distance between two clients is meter, RSSI is the signal strength of one client receiving the other client, A is the signal strength at the distance of 1 meter, and the units of RSSI and A are dbm.
5. The method for infectious victim tracking and infection risk detection according to any of claims 1-4, wherein said risk levels comprise three levels, high, medium and low, which are displayed by the client in red, green and blue colors, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010438537.1A CN111343577B (en) | 2020-05-22 | 2020-05-22 | Method for infectious patient tracking and infection risk detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010438537.1A CN111343577B (en) | 2020-05-22 | 2020-05-22 | Method for infectious patient tracking and infection risk detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111343577A true CN111343577A (en) | 2020-06-26 |
| CN111343577B CN111343577B (en) | 2020-08-28 |
Family
ID=71188098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010438537.1A Active CN111343577B (en) | 2020-05-22 | 2020-05-22 | Method for infectious patient tracking and infection risk detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111343577B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768594A (en) * | 2020-07-23 | 2020-10-13 | Oppo广东移动通信有限公司 | Close contact judgment method and device, computer equipment and storage medium |
| CN111885494A (en) * | 2020-08-05 | 2020-11-03 | 深圳云里物里科技股份有限公司 | Social distance warning method, device, equipment and medium |
| CN112085912A (en) * | 2020-09-20 | 2020-12-15 | 济宁山云宇内机电科技有限公司 | Human body distance monitoring prompter and working method |
| CN112153562A (en) * | 2020-09-17 | 2020-12-29 | 珠海康正信息科技有限公司 | User network positioning method based on Bluetooth, electronic equipment and medium |
| CN112151189A (en) * | 2020-07-23 | 2020-12-29 | 深圳市三七智联科技有限公司 | Epidemic situation monitoring method, system and computer readable storage medium |
| CN112165683A (en) * | 2020-09-24 | 2021-01-01 | 京东方科技集团股份有限公司 | Communication distance early warning method and device |
| CN112165687A (en) * | 2020-09-11 | 2021-01-01 | 来邦养老科技有限公司 | Personnel contact tracking method and system |
| CN112203231A (en) * | 2020-10-10 | 2021-01-08 | 深圳壹账通智能科技有限公司 | Infectious disease tracking method, infectious disease tracking device, electronic equipment and storage medium |
| CN114760594A (en) * | 2022-06-15 | 2022-07-15 | 西南石油大学 | Method and system for tracking close contact person based on decentralized network |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103188023A (en) * | 2013-03-19 | 2013-07-03 | 天脉聚源(北京)传媒科技有限公司 | Distance measuring method and system, and application method |
| CN104159294A (en) * | 2014-08-01 | 2014-11-19 | 西南科技大学 | Cloud positioning platform based on Bluetooth 4.0 technology |
| CN106304327A (en) * | 2015-05-29 | 2017-01-04 | 北京京东尚科信息技术有限公司 | A kind of method and apparatus of positioning user terminal |
| CN107249170A (en) * | 2017-06-13 | 2017-10-13 | 天地融科技股份有限公司 | A kind of method and system of bluetooth equipment secure communication |
| WO2018200334A1 (en) * | 2017-04-28 | 2018-11-01 | Hewlett Packard Enterprise Development Lp | Bluetooth device locator |
-
2020
- 2020-05-22 CN CN202010438537.1A patent/CN111343577B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103188023A (en) * | 2013-03-19 | 2013-07-03 | 天脉聚源(北京)传媒科技有限公司 | Distance measuring method and system, and application method |
| CN104159294A (en) * | 2014-08-01 | 2014-11-19 | 西南科技大学 | Cloud positioning platform based on Bluetooth 4.0 technology |
| CN106304327A (en) * | 2015-05-29 | 2017-01-04 | 北京京东尚科信息技术有限公司 | A kind of method and apparatus of positioning user terminal |
| WO2018200334A1 (en) * | 2017-04-28 | 2018-11-01 | Hewlett Packard Enterprise Development Lp | Bluetooth device locator |
| CN107249170A (en) * | 2017-06-13 | 2017-10-13 | 天地融科技股份有限公司 | A kind of method and system of bluetooth equipment secure communication |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768594A (en) * | 2020-07-23 | 2020-10-13 | Oppo广东移动通信有限公司 | Close contact judgment method and device, computer equipment and storage medium |
| CN112151189A (en) * | 2020-07-23 | 2020-12-29 | 深圳市三七智联科技有限公司 | Epidemic situation monitoring method, system and computer readable storage medium |
| CN111885494A (en) * | 2020-08-05 | 2020-11-03 | 深圳云里物里科技股份有限公司 | Social distance warning method, device, equipment and medium |
| CN112165687A (en) * | 2020-09-11 | 2021-01-01 | 来邦养老科技有限公司 | Personnel contact tracking method and system |
| CN112153562A (en) * | 2020-09-17 | 2020-12-29 | 珠海康正信息科技有限公司 | User network positioning method based on Bluetooth, electronic equipment and medium |
| CN112153562B (en) * | 2020-09-17 | 2023-05-09 | 珠海维望信息科技有限公司 | Bluetooth-based user network positioning method, electronic equipment and medium |
| CN112085912A (en) * | 2020-09-20 | 2020-12-15 | 济宁山云宇内机电科技有限公司 | Human body distance monitoring prompter and working method |
| CN112165683A (en) * | 2020-09-24 | 2021-01-01 | 京东方科技集团股份有限公司 | Communication distance early warning method and device |
| CN112203231A (en) * | 2020-10-10 | 2021-01-08 | 深圳壹账通智能科技有限公司 | Infectious disease tracking method, infectious disease tracking device, electronic equipment and storage medium |
| CN114760594A (en) * | 2022-06-15 | 2022-07-15 | 西南石油大学 | Method and system for tracking close contact person based on decentralized network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111343577B (en) | 2020-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111343577B (en) | Method for infectious patient tracking and infection risk detection | |
| US10582385B2 (en) | Secure beacon-based location systems and methods | |
| US10313440B2 (en) | Information management system, mobile communication terminal, data bank device, service information management device, authentication device, data management method, mobile communication terminal control method, database control method, service information management method, and program | |
| CN107409145A (en) | The method, apparatus and computer program product locally controlled by intermediate equipment | |
| US7778606B2 (en) | Method and system for wireless intrusion detection | |
| CN111556095A (en) | Infectious disease epidemic situation early warning method and system based on positioning technology | |
| US20090121890A1 (en) | Proximity-Sensor Supporting Multiple Application Services | |
| US20150123787A1 (en) | Centrally managed lone worker monitoring system and method | |
| EP1580641A2 (en) | Global positioning system (GPS) based secure access | |
| US20120309427A1 (en) | Method and system for locating a wireless access device in a wireless network | |
| CN105027148A (en) | Presence detection using Bluetooth and hybrid-mode transmitters | |
| CN114153343B (en) | Health code display method and electronic equipment | |
| RU2014129938A (en) | SYSTEMS AND METHODS OF REMOTE MONITORING OF MEDICAL DEVICES | |
| CN1611088A (en) | Delivery of mobile station operational and self-performance test results to network in response to encrypted request message | |
| JP2020515205A (en) | Cross reference for wireless device detection, tracking and authentication platforms and technology applications | |
| WO2010150031A1 (en) | System for locating and registration of mobile units moving in zones defined by access points | |
| EP4083889A1 (en) | Method and device for monitoring advertising device | |
| US20190326009A1 (en) | Employee visit verification system | |
| JP2014044641A (en) | Crime information management device and crime information management system | |
| US10699810B2 (en) | Employee visit verification system | |
| KR102178501B1 (en) | Location stracking system based on facilities and method thereof | |
| CN111770456B (en) | Automatic sign-in system and method for hospital teaching activities | |
| CN108765823B (en) | Alarm method, device and system | |
| JP2010206702A (en) | Management system, management method, and program of life log data | |
| CN114842981A (en) | Health data reporting and health data inquiring method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |