WO2021229324A1 - Contrôle de la distance sociale - Google Patents

Contrôle de la distance sociale Download PDF

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Publication number
WO2021229324A1
WO2021229324A1 PCT/IB2021/053240 IB2021053240W WO2021229324A1 WO 2021229324 A1 WO2021229324 A1 WO 2021229324A1 IB 2021053240 W IB2021053240 W IB 2021053240W WO 2021229324 A1 WO2021229324 A1 WO 2021229324A1
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WO
WIPO (PCT)
Prior art keywords
social distance
distance monitoring
social
monitoring device
smd
Prior art date
Application number
PCT/IB2021/053240
Other languages
English (en)
Inventor
Aviv Soffer
David Hirshberg
Original Assignee
Highseclabs Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Highseclabs Ltd. filed Critical Highseclabs Ltd.
Publication of WO2021229324A1 publication Critical patent/WO2021229324A1/fr

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Classifications

    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
    • G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
    • G16H50/80—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for detecting, monitoring or modelling epidemics or pandemics, e.g. flu
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
    • G16H40/00—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices
    • G16H40/60—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices
    • G16H40/67—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H04W4/21—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel for social networking applications
    • 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

Definitions

  • the present invention in some embodiments thereof, relates to a system to measure social distances between people in general, and more particularly, but not exclusively, to a social distances measurement within organizations.
  • the main application for social distances measurement is in the context of controlling a pandemic scenario, as the COVID-19 pandemic, both by monitoring that individual as well as organizations fulfil the social distances rules, and by assisting pandemic inquiries to track down and isolate potential individuals that was infected by a positive detected infection carrier.
  • a social distance monitoring system and social monitoring device The system records the distances between individuals that carry the social monitoring device.
  • controller is logging distance measurements to the memory, the controller calculates a social distance rank based on said logged data, and the controller is configured to upload said logged data to collection gateways that transfer this data to a server.
  • a social distance monitoring device system comprising
  • collection gateways upload the distance measurements from the social distance monitoring devices to the server.
  • the social distance monitoring device is assigned with ID.
  • the social distance monitoring device is based on RSSI (Received Signal Strength Indicator) of beacons that are sent with known transmission power.
  • RSSI Received Signal Strength Indicator
  • the social distance monitoring is based on time delay between transited and received signals.
  • the social distance monitoring device is based on Bluetooth, Bluetooth low energy (BLE), NFC, Wi-Fi or ZigBee signals.
  • the social distance monitoring device further comprising at least one of or any combination of (a) Inertial Navigation System (INS), (b) motion sensors, (c) accelerometers, (d) rotation sensors, and (e) Global Positioning System (GPS).
  • INS Inertial Navigation System
  • GPS Global Positioning System
  • the social distance monitoring device further comprising a connector to at least (a) upload measurements data, (b) re program or reconfigure the social distance monitoring device, or (c) charging the social distance monitoring device.
  • the connector is at least any one of (a) micro-USB connector, (b) USB type C connector, and (c) lightening connector.
  • the social distance monitoring device further comprising one or more indicators to indicate at least the social distance monitoring device status or the accumulated social distance rank status.
  • only a fixed number of last days distance measurements are kept the memory while older distance measurements are overwritten.
  • measuring the distance is based on transmission and reception of acoustic signals.
  • the shape of the social distance monitoring device is at least one of (a) cylinder, (b) flat-rectangular, or (c) credit card form factor.
  • the social distance monitoring device wherein the SMD monitors movements and condition upon these movements deactivate distance measuring.
  • the communication module periodically transmits beacon signal.
  • the concrete timing of sending the beacon is randomized.
  • the transmission power level of the beacon is variable and a periodic or randomized power level setting is performed.
  • the controller processes the distance measurements, at least filters, reconstructs or compresses the distance measurements to produce social distance data.
  • a social distance monitoring system comprising:
  • collection gateways upload the distance measurements from the social distance monitoring devices to the server.
  • each social distance monitoring device is assigned with a unique ID.
  • the social distance monitoring system wherein the server associate between the SMD’s ID and an identity property of the person that is assigned to each one of the SMDs.
  • the social distance monitoring system wherein measuring the distance is based on received signals transmitted by the plurality of social distance monitoring devices.
  • the social distance monitoring system wherein measuring the distance is further based on received signals transmitted by the one or more collection gateways.
  • the social distance monitoring system wherein measuring the distance is based on at least one of Bluetooth, Bluetooth low energy (BLE), NFC, Wi-Fi or ZigBee signals.
  • the social distance monitoring system wherein the social distance monitoring devices are assigned to employees of a company, members of an organization or a citizen of a country.
  • the social distance monitoring system wherein collection gateways synchronize the time of day (TOD) of the social distance monitoring devices.
  • TOD time of day
  • the social distance monitoring system wherein the server is ranking the social distance behavior of persons, and at least one of a department, a business, a business unit, a location, a premise, a neighborhood, a community, or a city.
  • each identified as a positive carrier of an infected disease person that is assigned in the system provides a list of possible infected persons also assigned to the system based on the social distance data stored in memory of the social distance monitoring devices of the identified as a positive carrier of an infected disease person.
  • each identified as a positive carrier of an infected disease person that is assigned in the system provides a list of possible infected persons also assigned to the system based on the social distance data collected by the one or more collection gateways.
  • Implementation of the method and/or system of embodiments of the invention can involve performing or completing selected tasks manually, automatically, or a combination thereof.
  • several selected tasks could be implemented by hardware, by software or by firmware or by a combination thereof using an operating system.
  • hardware for performing selected tasks according to embodiments of the invention could be implemented as a chip or a circuit.
  • selected tasks according to embodiments of the invention could be implemented as a plurality of software instructions being executed by a computer using any suitable operating system.
  • one or more tasks according to exemplary embodiments of method and/or system as described herein are performed by a data processor, such as a computing platform for executing a plurality of instructions.
  • the data processor includes a volatile memory for storing instructions and/or data and/or a non-volatile storage, for example, a magnetic hard-disk and/or removable media, for storing instructions and/or data.
  • a network connection is provided as well.
  • a display and/or a user input device such as a keyboard or mouse are optionally provided as well.
  • FIG. l is a conceptual simplified view of a social distance monitoring system in accordance with an exemplary embodiment of the invention.
  • FIG. 2 is a simplified minimal block diagram of a Social Distance Monitoring (SMD) device in accordance with an exemplary embodiment of the invention
  • FIG. 3 is a block diagram of the management subsystem in accordance with an exemplary embodiment of the invention.
  • FIG. 4 is a block diagram of another SMD device in accordance with an exemplary embodiment of the invention.
  • FIG. 5 is a flow chart of the main tasks of the SMD device controller in accordance with an exemplary embodiment of the invention.
  • FIG. 6 is an isometric view of an exemplary SMD in accordance with an exemplary embodiment of the invention.
  • FIG. 7 is an exploded isometric view of the exemplary SMD in accordance with an exemplary embodiment of the invention.
  • FIG. 8 is a block diagram of the exemplary SMD device in accordance with an exemplary embodiment of the invention.
  • the present invention in some embodiments thereof, relates to a system to measure social distances between people, in general, and more particularly, but not exclusively, to a social distances measurement within organizations.
  • the social distance between people needs to be continuously measured and monitored.
  • a measure of an average social distance i.e., the accumulated average distance between people in a period of time, e.g., a day
  • R0 the average number of people any one person that is carrying the virus is expected to infect
  • a pandemic can be controlled.
  • average social distance is kept lower than an empirical threshold, R0 can be kept less than one, causing the pandemic to eventually vanished.
  • FIG. 1 illustrates a conceptual simplified view of a social distance monitoring system.
  • Each person 100 in the system has a Social Distance Monitoring Device, SMD 100 for measuring his accumulated social distance.
  • the SMD may be in variety of form factors, such as, an ID tag, a wristwatch, handcuff, attachable button, wearable device or the like.
  • the SMD may be worn or held voluntarily or be enforced to be worn by a locking means such as handcuff or the like.
  • SMD 100 are periodically measure the distances 20 between SMDs 100 in the adjacent area, effectively periodically measure the distance between all persons that are in the same area.
  • Each SMD assigned with ID Each ID is associated with a person, i.e., person name, person ID, or any other identity property of the person.
  • the SMD does not have any information on the person or the person ID which is associated to the SMD.
  • the assignment between the SMD ID and the person ID is only known to authorized personal or stored in a secured IT system.
  • the SMD is used also as general- purpose tag for identification, entrance control and the like.
  • SMD can be integrated to citizen ID, driving license, employee ID or employee tag and the like.
  • FIG. 2 is a simplified minimal block diagram of the SMD device.
  • SMD device 100 comprising a communication module 110, a controller 120, a power source 130 and a memory 140.
  • Communication module 110 measures the distance between SMDs 100 via a wireless link 20. The distance measurement can be done by measuring the Received Signal Strength Indication, RSSI, of beacons that are sent with fixed power by adjacent SMDs 100. Other measurement methods such as measuring the delay of a loop of transition and respond signals may be used. The time delay between the transmitted and receive signals may come from reflections or from active transponder in each SMD 100. Wideband radio signals such as Direct Sequence Spread Spectrum (DSSS) or the like may be used to enhance the distance measurements accuracy.
  • DSSS Direct Sequence Spread Spectrum
  • Communication module 110 may comprise one or more antennas to transmit and receive Radio Frequency (RF) signals. Additionally or alternatively in an exemplary embodiment of the invention, ultrasound signals may be used to measure the distance.
  • RF Radio Frequency
  • Communication module 110 is used also to upload the measurement data to a management subsystem as describe later on.
  • Controller 120 controls the operation of communication module 110, receives all the distance measurements and stores the measurements in memory 140. Controller 120 also performs an upload of the stored measurements through communication module 110 to the management subsystem.
  • Power source 130 is a battery, rechargeable battery or any other subsystem that provide the power to the other modules in SMD 100. Power source 130 may comprise power harvesting subsystem to harvest energy from the environment. Additionally or alternatively, power source 130 may comprise wireless charger or a charging circuits that connects to a wired interface or connector.
  • FIG. 3 is a block diagram of the management subsystem in accordance with an exemplary embodiment of the invention.
  • Management subsystem 200 comprises a server 210 that gather the measurements from all the SMDs 100 in the system.
  • Server 210 is connected to network 220.
  • Network 220 may be the Internet, local area network or any network or cloud of networks that the organization or the country that operate the system is using to implement management subsystem 200.
  • Network 220 is connected to variety of collection gateways: 230, 240, 250 and 260 are illustrated in the figure.
  • Collection gateway 230 is a security gate that people 10 are passing through to enter a facility. When a person 10 pass security gate 230 the collection gateway 230 identity SMD 100 and initiate an upload operation of the measurement data collected by SMD 100.
  • gate 230 may measure person 10 temperature, fetch from server 210 or SMD 100 a social distance rank for this person, or fetch other information on the person associated with SMD 100.
  • persons 10 with high accumulated social distance rank may be disallow to pass the gate.
  • persons 10 with other characteristics, such as present body temperature, distance from his home and the like might be disallowed to pass the gate.
  • a collection gateway 240 may be carried by controllers 270.
  • Controllers 270 may be policemen, security or medical personals, and the like.
  • the mobile communication gateway 240 may communicate with SMD and the server in the same way as security gate 230.
  • the communication between mobile communication gateway 240 and network 220 may be carried out by wireless communication such as a cellular infrastructure.
  • Controller 270 may read SMD using mobile communication gateway 240 and read the person social distance rank or full distance measurement history as well as other data that is stored in server 210. Condition upon this data, controller 270 may give a fine to person 10 that did not keep social distance rules or perform other action as required by the policy of the entity operating the social distance monitoring system.
  • Collection gateway 250 is a door entry control subsystem inside a facility.
  • the SMD may perform as an entrance controlling tag for a standard entry control system of the entity. Each time person 10 pass the door, collection gateway 250 uploads the distance measurements from SMD 100 to server 210.
  • Door entry control subsystem may disallow enterers of a person into a room base upon its accumulated social distance data for a period of time, e.g., the last 24 hours or based upon more complex decision algorithm runs on server 210.
  • the doors in this case may be automatic doors that opens when the SMD 100 is in proximity to the collection gateway 250.
  • Collection gateway 260 is a fix installation spread around the facility, the premises or the area covered by management subsystem 200.
  • Collection gateway 260 may be deployed in any Wi-Fi access point, any corridor, any crosswalk or the like. The purpose of collection gateway 260 spread is to enable frequent uploads of logged measurement data from the SMDs 100 to allow updated data on server 210 as well as reduce the memory requirements of SMDs 100.
  • Collection gateway may be deployed in public transportation and other places people are gathering in.
  • While SMD 100 may calculate locally the accumulated social distance of person 10 which SMD 100 is associated with, server 210 gets all distance measurements between persons 10 in the system. SMD 100 may give person 10 a feedback or a rank of the accumulated social distance this person achieved by local calculation or from fetching this calculated rank from server 210. Server 210 ranking may be more accurate since the social distance records in the server contains both the distance measurements of the specific SMD 100 of person 10 as well as the distance measurements performs by other SMDs to the specific SMD 100. In an exemplary embodiment of the invention, distance measurements can be further improved by transmission and/or reception of collection gateways 230, 240, 250 and 260 as describe hereinbelow.
  • Server 210 can rank the performance of a department, a business, a business unit, a location, a premise, a neighborhood, a community, or a city. Server 210 can rank the performance of specific persons. Server 210 can alert the operating entity on the overall performance to keep social distance in the level that will not increase R0 to a level that is more than one so to avoid the pandemic exponential growth.
  • server 210 may identify people with too low accumulated social distance and issue an alert to them and even command them for lockdown for a specific period of time. Server 210 may find patterns of not keeping social distance in specific area or specific business and issue restrictions accordingly. Whenever a positive infection information on a specific person is provided to server 210, server can back track all those persons that had close connection with this infected person and triggers infection tests and lockdown instructions to these persons that have been in close connection with the infected person.
  • FIG. 4 is a block diagram of another SMD device 100a with additional optional features.
  • SMD device 100a comprises communication module 110, controller 120, and a memory 140 as in SMD 100 illustrated in Figure 2.
  • SMD device 100a comprises a secondary communication module 150.
  • communication module 110 is used for distance measurements and secondary communication module 150 is used for wireless communication with collection gateways 230, 240, 250 and 260.
  • both communication modules 110 and 150 are used for distance measurements and wireless communication with collection gateways wherein in distance measurements simultaneous measurements may be used for improving accuracy and in collection gateways communication each communication module is used to communicate with different type of collection gateways.
  • communication module 110 is BLE and secondary communication module 150 supports NFC.
  • secondary communication module 150 supports Wi-Fi.
  • SMD device 100a comprises rechargeable battery 130a.
  • rechargeable battery 130a may be charged using wireless charger 130b (e.g., charging coil).
  • SMD device 100a further comprises Inertial Navigation System (INS) 160 that may use motion sensors (accelerometers) and rotation sensors (gyroscopes) to continuously calculate the movement of the SMD 100. Movement of SMD 100 may be collected and transferred to server 210 and/or used locally by SMD controller. For example, when calculating social distance rank, a measurement when SMD 100 is on the move, weighs less than a measurement taken in stationary state. If movement exceed predefined velocity, distance measurement relative to stationary SMDs may be disabled and not be calculated at all.
  • INS Inertial Navigation System
  • SMD device 100a further comprises Global Positioning System (GPS) 170.
  • GPS 170 may be collected and transferred to server 210 and/or used locally by SMD controller. For example, when person is in predefined places, like home, distance measuring may be disabled.
  • SMD device 100a further comprises a connector 180.
  • Connector 180 may be used for upload measurements data in more secure manner, re-program or reconfigure SMD 100a, charging battery 130a, and the like.
  • SMD device 100a further comprises indicators 190.
  • Indicators 190 may be used to indicate person 10 that SMD 100a is operative, give person 10 the social distance accumulated status and the like. For example, the status may be green (not many close contacts with people in the past 24 hours), orange (number of close contacts with people in the past 24 hours start to be dangerous or close to a rule/threshold), and red (threshold/rule exceeded).
  • indicator 190 comprises a buzzer that alert person 10 when he is too close to another person or too close to another person for longer than a duration threshold.
  • SMD device 100a further comprises UI input elements 195.
  • UI elements can be buttons, sliders or the like.
  • an on/off button may be added to trusted/ security personal that need to disable measurements or disable SMD 100a generating radiation for security reason or similar reasons.
  • FIG. 5 is a flow chart of the main tasks of controller 120.
  • Controller has a task comprising from steps 410 and 420 to receive distance measurements from communication module 110 (or 150) and to store the measurements in the memory, and another task comprising from steps 440 - 470 to upload the logged distance measurements to server 210.
  • step 410 controller 120 receives new distance measurement from communication module 110.
  • step 420 the measurement along with its attributes such as the ID of the SMD, the time tag, and optional additional tags such as the velocity are stored as a measurement record in the memory. Each record is tagged as not yet uploaded to server upon its insertion to memory. The loop of steps 410 and 420 repeatedly executed.
  • step 440 search for a collection gateway and in step 450 controller 120 check if the gateway is available, i.e., ready to receive a new record. In case the gateway is not available controller jump back to step 440 and the loop continues until a gateway is available to receive a record.
  • step 460 the oldest not yet record is uploaded to the gateway. After getting acknowledge that the record received on the gateway, the record is tagged as uploaded. Old uploaded records may be discarded from memory to provide storage space to future records.
  • SMD had memory that is big enough and sufficient to store records for several days and even several months.
  • one possible embodiment of the invention is to periodically upload the records using the connector 180.
  • SMD 100a may be connected to a collection gateway with galvanic connection and indicator 190 may signals when the uploading is ended.
  • SMD had memory to store records for a fixed number of last days, e.g., 14 days, and only the distance measurements of the last days are stored in the SMD. For privacy reasons, these last days data may be uploaded to the management subsystem 200 only occurs if the SMD 100 is associated with person 10 that is tested positive for the relevant disease, e.g., COVID-19.
  • the entity operating the social distance system is a big organization such as a large company or state agency. Additionally or alternatively, the entity operating the social distance system is a country and the SMDs are provided for all the citizens. Yet in another embodiment, the system may be deployed in customer-oriented site such as a shop or a shopping mall wherein each customer gets a tag in the entrance and the entity measures the social distances between customers as well as social distances between customers and employers and the exposure of employers to potentially too many customers and vice versa.
  • Figures 6-8 provide a simple exemplary embodiment of SMD 100 and SMD 100a in according to the present invention. This single simple embodiment, may be modified in varies ways that mentioned inhere above and inhere below to provide any other described embodiment of the invention. Certain features described in the context of this embodiment might be extended or reduced as required.
  • FIG. 6 is an isomeric view of an exemplary SMD 100b.
  • SMD 100b is a cylinder-shaped small device (e.g., diameter of 2 cm and height of 5 mm) that is carried by person 10.
  • the visible elements of SMD 100b are the SMD’s case (referenced also by 100b) in the figure are connector 180b, indicator 190b and user interface button 195b.
  • the shape of SMD 10b may be flat rectangular, such as credit card form factor.
  • FIG 7 is exploded isometric view of SMD 100b.
  • SMD 100b comprises of bottom case 104b and top case 102b. Inside the case the is PCB 103b and a battery 132. Battery 132 may be inserted into battery compartment component assembled on PCB 103b. Over the top case 102b, a flexible adhesive sheet 101b is attached to the case sheet 101b also provide the operation surface of UI input elements 195b (a push button in this exemplary embodiment)
  • FIG. 8 is a block diagram of SMD 100b.
  • SMD 100b may comprise on PCB 103b the main Integrated Circuit (IC) 122, antenna 112, connector 180b, accelerometer IC 160b, push button 195b, indicator 190b (e.g.,
  • Main IC 122 may comprise controller 120b, memory 140b and communication module 110b.
  • main IC 122 comprises low energy Bluetooth transceiver.
  • main IC 122 supporting low energy Bluetooth transceiver are available in the market. For example, STMicro’s BlueNRG and STM32WB IC families, TFs CC2642 and CC2652 IC families, Silicon Lab’s EFR32BG family, and the like.
  • Battery 132 provide the energy needed to operate SMD 100b. Having sufficient battery life time to support operation of SMD 100b for a long enough duration is a major design consideration.
  • Battery 132 may be cylinder-shaped primary battery such as CR2032 battery.
  • battery 132 may be replaced by any power source such as secondary (rechargeable) battery or environment energy harvesting power source.
  • Antenna 112 is connected to communication module 110b in main IC 122.
  • Antenna 112 may be printed on the PCB, connected via RF connector to the PCB or provided by Antenna IC assembled on the PCB.
  • the antenna gain should be as closer as possible to uniform to different direction (omni antenna).
  • omni antenna omni antenna
  • a plurality of antennas directed to different directions are used.
  • Accelerometer IC 160b monitor the movements of SMD 100b.
  • the accelerometer is used to determined if SMD 100b is worn by person 10 and may be used to deactivate the distance measurements. For example, in cases were no activity at all (e.g., whenever person 10 sleep at nights) SMD 100b may enter sleep mode to save battery power. Additionally or alternatively, in case of a rapid movement like waking in a street, the distance measurements may be deactivated. In general, SMD 100b distance measurements may be deactivated in scenarios where the measuring social distance are unnecessary or undesired.
  • Connector 180b may be used to activate the SMD 100b, to download measured social distance data, to synchronize SMD 100b real time clock (RTC) and the like.
  • connector 180b may be micro-USB connector, USB type C connector, lightening connector, or the like.
  • Push button 195b may be used for several purposes. For example, to start communication with an external device when a cable is connected to connector 180b, to force exciting from sleep mode and the like.
  • LED indicator 190b may provide indication to person 10 about the SMD 100b status. For example, indicator 190b may blink in red color when SMD 100b is sensing other SMD 100b nearby, blink in green color when SMD 100b is active and not sensing other SMD 100b nearby, and blink in blue color when SMD 100b is inactive in battery save sleep mode.
  • indicator 190b show the state of social distancing status for the that day or hour where green color indicate that social distancing roles were kept, and red indicates they are no kept for the defined time interval.
  • the distance between adjacent SMDs 100b is measured using Received Signal Strength Indication (RSSI) measurement.
  • RSSI Received Signal Strength Indication
  • SMD 100b After activation of SMD 100b (activation may be performed through connector 180b) SMD 100b starts to send periodically beacons to advertise its existence. Beacons in Bluetooth low energy may be Non-connectable undirected advertising Broadcasting Packet (ADV NONCONN IND). In other communication protocols similar type packets may be used.
  • the beacon transmits (or advertise) ID data of the SMD 100b.
  • Each SMD 100b has ID to identify the SMD.
  • activation management subsystem 200 assign a person 10 to each SMD ID.
  • SMD ID might be the unique number assigned to main IC 122, the MAC address assigned communication module 110b or any other unique number that may be given by management subsystem 200 during activation.
  • SMD 100b scan and receive transitions from other SMD 100b devices in its surroundings.
  • the transmit power of the SMDs are controlled to be low enough to be received in the target distance (e.g., 2 meters) but not typically been able to be received by SMD 100b that is farther away (e.g., 5 meters).
  • the target distance e.g. 2 meters
  • SMD 100b that is farther away
  • RSSI of -90 dBm typically receive in 2 meters range. While this RSSI is not the most accurate way to measure the distance, it is simple and cheap way to achieve rough estimation for the distance. Additionally or alternatively, time measurement of signals are used.
  • SMD’s may transmit some beacons with the low transmit power level and some other beacons with a bit higher transmit power level to find potentially SMDs 100b that are close to each other but from some reasons, such as, shading by objects, received with RSSI that is under the detection threshold of the SMTs receiver.
  • variable transmit power levels might be used and a periodic or randomized power level setting may be assigned to each beacon transmit power level.
  • SMD 100b transmit beacon each 150 milliseconds for in a random frame duration of between 30-35 second then scan (i.e., open to receive beacons) in a frame of 400 milliseconds.
  • Each received beacon is first analyzed and beacons that are not from SMDs 100b are filtered out.
  • the received SMD IDs accompanying additional information such as time of reception, RSSI, transmitted power and the like is stored to memory.
  • additional processing is made on the data while additional data arrives.
  • SMD 100b will assume that this transmitting SMD is still in close proximity to the receiving SMD.
  • This processing is referred herein as reconstruction the controller processes the distance measurements provided by the beacon reception, filters, reconstructs or compresses the distance measurements to produce measured social distance data.
  • controller 120b may compress data in several ways for example controller 120b may combine several occurrence of close proximity events with the same person 10, i.e., same SMT ID, to a single event per day with accumulated duration or discard occurrence of close proximity that were under some time threshold. Other well-known technics of compression may be used.
  • the SMD may enter sleep mode if accelerometer IC 160b signals no movement of SMD 100b for a duration, e.g., 15 minutes. When afterwards the accelerometer IC 160b sense movement the SMD may wake up and exit the sleep mode.
  • management subsystem 200 When a person 10 with SMD 100b is identified positive to an infectious disease, e.g., Covid-19, the SMD 100b is connected through connector 180b to management subsystem 200 through connection gateway management subsystem 200 upload the 14 days records from SMD 100b with the list of SMT IDs that were in close proximity to identified positive person 10.
  • Management subsystem 200 contains the association between SMD’s ID and persons 10. This association may be, for example, for all worker in the same premises. Upon this data, as well as other data gathered by management subsystem 200, management subsystem 200 may enhance the accuracy of the social distance data. Management subsystem 200 may provide instructions to which are the persons 10 that might be infected by the identified positive person 10 so that the suspected as infected persons 10 can be tested and possibly isolated to cut the infection chains.
  • management subsystem 200 comprises personal computer connected through USB cable to SMD 100b.
  • management subsystem 200 may be connected through to SMD 100b through communication module 110b.
  • management subsystem 200 synchronize the time of day (TOD) clocks running in controller 120b of each SMD
  • compositions, method or structure may include additional ingredients, steps and/or parts, but only if the additional ingredients, steps and/or parts do not materially alter the basic and novel characteristics of the claimed composition, method or structure.
  • a compound or “at least one compound” may include a plurality of compounds, including mixtures thereof.

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Abstract

L'invention concerne un système de surveillance de distance sociale et un dispositif de surveillance sociale. Le système enregistre les distances de n'importe lequel qui porte le dispositif de surveillance sociale. Le dispositif de surveillance de la distance sociale est attaché à une personne comprenant : un module de communication qui mesure périodiquement la distance entre le dispositif de surveillance de la distance sociale et un autre dispositif de surveillance de la distance sociale ; une commande ; une source d'alimentation ; et une mémoire. La commande enregistre les mesures de distance dans la mémoire et calcule un rang de distance sociale sur la base desdites données enregistrées. Le dispositif de commande est configuré pour télécharger lesdites données journalisées vers une passerelle de collecte qui transfère ces données à un serveur. Le système de surveillance de distance sociale comprend une pluralité de dispositifs de surveillance de distance sociale, une pluralité de passerelles de collecte et un serveur. Les passerelles de collecte téléchargent les mesures de distance à partir des dispositifs de surveillance de distance sociale vers le serveur.
PCT/IB2021/053240 2020-05-12 2021-04-20 Contrôle de la distance sociale WO2021229324A1 (fr)

Applications Claiming Priority (2)

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US202063023262P 2020-05-12 2020-05-12
US63/023,262 2020-05-12

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WO2021229324A1 true WO2021229324A1 (fr) 2021-11-18

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150327208A1 (en) * 2014-05-06 2015-11-12 Telecommunication Systems, Inc. Location trust score
WO2020069311A1 (fr) * 2018-09-28 2020-04-02 Apple Inc. Télémétrie entre des dispositifs mobiles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150327208A1 (en) * 2014-05-06 2015-11-12 Telecommunication Systems, Inc. Location trust score
WO2020069311A1 (fr) * 2018-09-28 2020-04-02 Apple Inc. Télémétrie entre des dispositifs mobiles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
REIMANN ET AL. ET AL.: "Contact Tracing with Mobile Applications", EDPS TECHDISPATCH, 7 May 2020 (2020-05-07), pages 1 - 5, XP055872326, Retrieved from the Internet <URL:https://edps.europa.eu/sites/default/files/publication/20-05-08_techdispatch-tracing_en.pdf> [retrieved on 20210619], DOI: 10.2804/45722 *

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