WO2022006908A1 - Procédé de commande de dispositif de l'internet des objets et appareil de communication - Google Patents

Procédé de commande de dispositif de l'internet des objets et appareil de communication Download PDF

Info

Publication number
WO2022006908A1
WO2022006908A1 PCT/CN2020/101479 CN2020101479W WO2022006908A1 WO 2022006908 A1 WO2022006908 A1 WO 2022006908A1 CN 2020101479 W CN2020101479 W CN 2020101479W WO 2022006908 A1 WO2022006908 A1 WO 2022006908A1
Authority
WO
WIPO (PCT)
Prior art keywords
control
signal
internet
iot
random number
Prior art date
Application number
PCT/CN2020/101479
Other languages
English (en)
Chinese (zh)
Inventor
邵帅
Original Assignee
Oppo广东移动通信有限公司
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 Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/101479 priority Critical patent/WO2022006908A1/fr
Priority to CN202080099512.1A priority patent/CN115398929A/zh
Publication of WO2022006908A1 publication Critical patent/WO2022006908A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/18—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre
    • H04Q5/22—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre the subordinate centre not permitting interconnection of subscribers connected thereto
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a control method and a communication device for an Internet of Things device.
  • the Internet of Things (Internet of Things, IoT) is the "Internet of all things connected", which is an extension and expansion of the Internet based on the Internet. It is a huge network formed by combining various information sensing devices with the Internet.
  • the intelligent sensing system can control the on and off of the IoT device by sensing the distance between the mobile device and the IoT device.
  • smart sensing systems mainly use short-range wireless transmission standards such as Bluetooth, WIFI, and Zigbee.
  • short-range wireless transmission standards such as Bluetooth, WIFI, and Zigbee.
  • the systems of these wireless communication standards have the disadvantages of high power consumption, high delay and difficult distance control.
  • the current IoT devices not only need to support the control and power supply of their logic circuits, but also need more energy for wireless transmission and reception, which increases the power consumption of the system.
  • the present application discloses a control method and a communication device for an Internet of Things device, which can control the Internet of Things device in a short distance, fast and low power consumption through the control device.
  • an embodiment of the present application provides a method for controlling an Internet of Things device, which is applied to the Internet of Things device, and the method includes:
  • the device information includes the device identifier of the IoT device and the first device state
  • the state is switched from the first device state to the second device state according to the first control signal.
  • At least one continuous wave signal sent by the control device before sending device information to the control device through backscattering technology in response to the interrogation signal, at least one continuous wave signal sent by the control device is received; signal energy is obtained through the at least one continuous wave signal, and the signal energy is used for the Internet of Things. power to the device.
  • the first control signal includes the device identifier of the IoT device
  • a confirmation message is sent to the control device, and the confirmation message includes the IoT device.
  • the device identification and second device state of the device are the device identifier of the IoT device.
  • At least one continuous wave signal sent by the control device before sending the confirmation information to the control device, at least one continuous wave signal sent by the control device is received; signal energy is obtained through the at least one continuous wave signal, and the signal energy is used to power the IoT device.
  • the first control signal includes the device identifier of the IoT device
  • the first control signal is switched from the first device state
  • the second control signal to the IoT device is not received within the preset time period after the second device state is reached, the second device state is switched to the first device state.
  • the interrogation signal further includes a random number instruction.
  • the control device before sending device information to the control device through backscattering technology in response to the inquiry signal, generate a first random number and a second random number according to a random number instruction; obtain the difference between the first random number and the second random number; Difference; if the difference is less than 0, it is determined to send device information to the control device.
  • the control device before sending device information to the control device through backscattering technology in response to the query signal, receive multiple query signals sent by the control device; generate a first random number and a second random number; When an inquiry signal is used, the difference between the first random number and the second random number is used as the updated first random number; When the next inquiry signal is received, the difference between the first random number obtained by the latest update and the second random number is taken as the first random number after the update, until the first random number obtained by the latest update is less than 0; If the obtained first random number is less than 0, it is determined to send device information to the control device.
  • the interrogation signal is also used to indicate the total number of IoT devices in the environment to which the IoT devices belong.
  • multiple query signals sent by the control device are received; according to the sum of the number of IoT devices in the environment to which the IoT device belongs, obtain the IoT device. If the number of received interrogation signals reaches the number threshold, it is determined to send device information to the control device.
  • an embodiment of the present application provides a control method for an Internet of Things device, which is applied to the control device, and the method includes:
  • a first control signal is generated according to at least one piece of device information, the first control signal includes a device identifier of at least one IoT device, and the first control signal is used to instruct each device identifier corresponding to the IoT device to be switched by the first device state of each IoT device to the second device status of each IoT device;
  • At least one confirmation message sent by at least one Internet of Things device is received, and each confirmation message in the at least one confirmation message includes a device identifier and a second device state of the Internet of Things device corresponding to each confirmation message.
  • At least one continuous wave signal is sent to at least one Internet of Things device, where the at least one continuous wave signal is used to provide signal energy.
  • At least one continuous wave signal is sent to the at least one IoT device, and the at least one continuous wave signal is used to provide signal energy.
  • an embodiment of the present application provides a communication device, which is applied to an Internet of Things device, and the device includes:
  • a transceiver unit for receiving an inquiry signal sent by the control device
  • the above-mentioned transceiver unit is further configured to send device information to the control device through backscattering technology in response to the inquiry signal, where the device information includes the device identifier of the Internet of Things device and the first device state;
  • the above-mentioned transceiver unit is further configured to receive the first control signal sent by the control device;
  • the processing unit is configured to switch from the first device state to the second device state according to the first control signal if the first control signal includes the device identifier of the IoT device.
  • an embodiment of the present application provides a communication device, which is applied to a control device, and the device includes:
  • a transceiver unit sending an inquiry signal to at least one IoT device
  • the above-mentioned transceiver unit is further configured to receive at least one device information sent by at least one Internet of Things device through backscattering technology, and the at least one device information includes the device identifier of each Internet of Things device in the at least one Internet of Things device and the information of each Internet of Things device. the first device state;
  • the processing unit is configured to generate a first control signal according to at least one device information, where the first control signal includes a device identifier of at least one IoT device, and the first control signal is used to indicate that each device identifier corresponding to the IoT device is determined by the respective IoT device.
  • the first device state is switched to the second device state of each IoT device;
  • the above-mentioned transceiver unit is further configured to send a first control signal to at least one IoT device;
  • the above-mentioned transceiver unit is further configured to receive at least one confirmation message sent by at least one Internet of Things device, and each confirmation message in the at least one confirmation message includes a device identifier and a second device state of the Internet of Things device corresponding to each confirmation message.
  • an embodiment of the present application provides a communication device, including a processor, a memory, and a user interface, where the processor, the memory, and the user interface are connected to each other, wherein the memory is used to store a computer program, and the computer program includes program instructions, processing
  • the controller is configured to invoke the program instructions to execute the control method of the Internet of Things device as described in the first aspect, or the control method of the Internet of Things device as described in the second aspect.
  • embodiments of the present application provide a computer-readable storage medium, where the computer-readable storage medium stores one or more instructions, and the one or more instructions are suitable for being loaded and executed by a processor as described in the first aspect
  • the IoT device receives an inquiry signal sent by the control device; in response to the inquiry signal, the device information is sent to the control device through backscattering technology, and the device information includes the device identifier of the IoT device and the first device status; the receiving control device The first control signal sent; if the first control signal includes the device identifier of the IoT device, the state is switched from the first device state to the second device state according to the first control signal.
  • the IoT device can be controlled in a short distance, quickly and with low power consumption through the control device.
  • FIG. 1a is a schematic diagram of a control application of an Internet of Things device in a home scenario provided by an embodiment of the present application;
  • FIG. 1b is a schematic diagram of an application of IoT device control in a golf course water spray scene provided by an embodiment of the present application;
  • FIG. 2a is a hardware architecture diagram of a backscatter transceiver device provided by an embodiment of the application
  • FIG. 2b is a hardware architecture diagram of another backscatter transceiver device provided by an embodiment of the application.
  • FIG. 2c is a hardware architecture diagram of another backscatter transceiver device provided by an embodiment of the present application.
  • FIG. 3 is a hardware architecture diagram of a control device provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a method for controlling an Internet of Things device provided by an embodiment of the present application
  • FIG. 5 is a schematic diagram of a method for sending or receiving an inquiry signal provided by an embodiment of the present application
  • FIG. 6 is a schematic diagram of a method for sending or receiving a control signal provided by an embodiment of the present application
  • FIG. 7 is a schematic flowchart of another method for controlling an Internet of Things device according to an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of another method for controlling an Internet of Things device according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a unit of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a simplified schematic diagram of an entity structure of a communication apparatus provided by an embodiment of the present application.
  • the Internet of Things refers to the real-time collection of any objects that need to be monitored, connected, and interacted through various devices and technologies such as various information sensors, radio frequency identification technology, global positioning systems, infrared sensors, and laser scanners. Or process, collect all kinds of required information such as sound, light, heat, electricity, mechanics, chemistry, biology, location, etc., through various possible network access, realize the ubiquitous connection between things and things, things and people, and realize Intelligent perception, identification and management of objects and processes.
  • Common IoT devices can include smart lights, sweeping robots, smart curtains, lawn sprinkler systems, and more.
  • Back Scatter Refers to the reflection of waves, particles or signals from the direction they came from. It can be realized that the device itself does not generate a signal, but reflects the transmitted signal, so as to achieve the purpose of information exchange.
  • the signal backscattered by the device can carry the information in the device, and can also imply the location information of the device.
  • backscattering technology the distance between devices or objects can be accurately measured, and the backscattering technology also has the characteristics of low power consumption and low delay.
  • Continuous Wave A wave that a laser outputs in a continuous fashion rather than in a pulsed fashion. Continuous waves can be captured and converted into energy by IoT devices to power backscatter transceivers in IoT devices.
  • FIG. 1a is a schematic diagram of an IoT device control application in a home scenario provided by an embodiment of the present application.
  • the home scene may include an IoT device 1, an IoT device 2, an IoT device 3, and a control device.
  • IoT devices can be turned on or off by sensing moving objects or devices, such as robot vacuum cleaners, smart lights, smart curtains, smart air purifiers, smart air conditioners, or smart heaters.
  • the control device may be a mobile terminal device, a wearable terminal device, etc., such as a mobile phone, a tablet computer, or a smart bracelet.
  • IoT device 1 takes a smart light as an example
  • IoT device 2 takes a sweeping robot as an example
  • IoT device 3 takes a smart curtain as an example
  • a control device takes a mobile phone as an example.
  • the home scene may include more than three IoT devices and more than one control device, which is not limited in this embodiment of the present application.
  • the IoT device receives the inquiry signal sent by the control device, it can be turned on or off through a series of operations. That is, when the IoT device detects that the control device is approaching, it will The corresponding on or off operation can be performed.
  • the proximity may refer to the distance between the control device and the IoT device within 10 meters, or the IoT device can receive the signal sent by the control device within the range.
  • the IoT device 1, that is, the smart light is currently in an off state, and can switch to an on state if a signal sent by the control device is detected.
  • the IoT device 2, that is, the sweeping robot is currently in an on state, and can switch to an off state if a signal sent by the control device is detected.
  • the IoT device 2 does not necessarily have to enter the off state after detecting the signal sent by the control device, and it can continue to work. That is to say, the working state of the IoT device and whether the signal sent by the control device is detected are not unique. Relationships, which can be configured by users, developers, or artificial intelligence systems.
  • FIG. 1b is a schematic diagram of an IoT device control application in a golf course water spray scene.
  • the golf course water spray scene may also include an IoT device 1, an IoT device 2, an IoT device 3, and a control device.
  • the IoT devices 1 to 3 can all be water spray devices, which are used to spray high-pressure water into the grass, and the IoT devices 1 to 3 can be devices that need to be turned on for a long time .
  • the control device can be mounted or integrated on a golf cart, or worn by a professional driver.
  • the IoT device 1 When the IoT device 1 detects the signal sent by the control device, it can suspend the current working state, so that the high-pressure water of the IoT device 1 can be prevented from being sprayed onto the golf cart; After the device 1, the IoT device 1 can re-enter the working state to continue irrigating the lawn.
  • the IoT device 2 to the IoT device 3 can also implement the same functions as the IoT device 1 has.
  • embodiments of the present application may not be limited to the above home scenarios and golf course water spray scenarios, but can also be adapted to application scenarios in which various Internet of Things devices and control devices work together, which are not limited in the embodiments of the present application.
  • the embodiments of the present application provide hardware architecture diagrams of three types of backscatter transceivers.
  • the backscatter transceiver shown in Figure 2a includes an antenna, RF energy capture, receiver, backscatter transmitter, energy management, and a microprocessor.
  • the microprocessor in the backscattering transceiver in Fig. 2a can output a signal to the Internet of Things device control module, and the Internet of Things device control module can control the on or off of the Internet of Things device.
  • the output signal may be a single binary signal, such as 0 for "off” and 1 for "off”.
  • the RF energy capture device in Figure 2a can capture RF energy to power the backscatter transceiver.
  • the backscatter transceiver shown in Figure 2b includes an antenna, a receiver, a backscatter transmitter, an energy management, and a microprocessor.
  • the backscattering transceiver does not include radio frequency energy capture, and the IoT device includes an IoT device control module and a power supply. Then, the backscattering transceiver is not powered by radio frequency energy capture, but powered by the power source carried by the IoT device.
  • the backscatter transceiver shown in Figure 2c includes an antenna, RF energy capture, receiver, backscatter transmitter, energy management, and a microprocessor.
  • the IoT device also includes an IoT device control module, a switch and a power supply.
  • the backscatter transceiver device can control the power supply and the Internet of Things device control module to supply power to the backscatter transceiver device through a control switch.
  • the backscatter transceiver device does not receive the signal sent by the control device, it can control the switch and connect the switch to the control module of the Internet of Things control device.
  • the power supply is not connected to the backscatter transceiver device, then the Internet of Things
  • the device control module will be in a power-down deep sleep mode.
  • the backscatter transceiver device controls the switch by using the radio frequency energy captured by the radio frequency energy.
  • any IoT device shown in FIG. 1a and FIG. 1b may include any one of the three backscattering transceivers shown in FIG. 2a, FIG. 2b and FIG. 2c. Scattering transceiver.
  • an embodiment of the present application provides a hardware architecture diagram of a control device.
  • the control device may be an intelligent terminal integrated with a radio frequency front end.
  • the RF front end includes an antenna, a transmitter, and a receiver.
  • the control device also includes a modem module and a central processing unit (CPU).
  • the modem module can transmit continuous waves (CW)
  • the modem and the RF front-end included in the modem module can transmit and receive Amplitude Shift Keying (ASK) ), Frequency-Shift Keying (FSK) and Phase Shift Keying (PSK) modulated signals.
  • the modulation and demodulation module shown in FIG. 3 can be integrated in the central processor. Both the central processor and the modulation and demodulation module can be implemented by general-purpose devices such as a microprocessor or a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • control method and communication device for IoT devices.
  • the control method and communication device are introduced in detail.
  • FIG. 4 is a schematic flowchart of a method for controlling an Internet of Things device according to an embodiment of the present application.
  • the execution subject of this embodiment may be an IoT device, and the IoT device may include any one of the three types of backscatter transceivers as shown in FIG. 2a , FIG. 2b or FIG. 2c .
  • the method may include the following steps:
  • the IoT device can first receive the continuous wave signal sent by the control device with a transmission duration of Tcw1, and then receive an inquiry signal sent by the control device with a transmission duration of Trequest, and then continue to receive the transmission sent by the control device.
  • the continuous wave signal with the transmission duration of Tcw1 means that the IoT device can continue to receive the continuous wave signal within the transmission duration of Tcw1, and the number of continuous wave signals at this time can be one or more; the transmission duration is Trequest inquiry The signal indicates that the IoT device can continue to receive the interrogation signal within the transmission duration of Trequest, and similarly, the interrogation signal can also be one or more; correspondingly, the continuous wave signal of the transmission duration Tcw2 indicates that the IoT device can be transmitted within the transmission duration of Tcw2. Continuously receive continuous wave signals.
  • the process of signal reception as shown in FIG. 5 can be looped nsearch times.
  • the IoT device can continuously receive continuous wave signals within the transmission duration of nsearch Tcw1s, continuously receive inquiry signals within the transmission duration of nsearch Trequests, and continue to receive continuous wave signals within the transmission duration of nsearch Tcw2s. .
  • the IoT device can receive at least one continuous wave signal in the total duration of nsearch Tcw1 and nsearch Tcw2.
  • the radio frequency energy capture module in the IoT device can capture continuous wave signals, and convert at least one received continuous wave signal into signal energy, which can supply power to the backscatter transceiver in the IoT device. That is, the IoT device can use the signal energy converted from the received at least one continuous wave signal for backscattering.
  • IoT devices need to continuously receive different signals in different time periods, and the number of different signals in different time periods can be the same or different. Since the IoT device has a certain failure rate in receiving signals, this method can ensure that the IoT device receives enough continuous wave signals to be converted into sufficient energy, and can also ensure that the IoT device receives the inquiry signal.
  • the IoT device including the backscatter transceiver device cannot pass through
  • the continuous wave signal obtains energy, but is supplied by its own power supply to backscatter the signal.
  • the IoT device can receive the inquiry signal instead of the continuous wave signal, can continue to receive the inquiry signal within the transmission duration of the Trequest, and can cycle nsearch times, that is, continue to receive the inquiry signal within the transmission duration of nsearch Trequests.
  • the control device In response to the inquiry signal, send device information to the control device through a backscattering technology, where the device information includes a device identifier of the Internet of Things device and a first device state.
  • the IoT device can send device information to the control device through backscattering technology and the signal energy converted from at least one continuous wave signal, where the device information can include the device identifier of the IoT device. and the first device state of the IoT device, where the first device state may be the state before the IoT device receives the inquiry signal.
  • the IoT device can use the continuous wave generated by the IoT device as a carrier to send device information to the control device; the device identifier of the IoT device can be a special identifier (Unique Identifier, UID), the device of the IoT device
  • UID Unique Identifier
  • the IoT device including the backscatter transceiver device can pass the The power module obtains the signal energy, and then sends the device information to the control device through the backscattering technology and the obtained signal energy.
  • the IoT device may further determine whether to send the device information to the control device.
  • the IoT device can determine whether to send device information to the control release by judging whether it has the backscattering authority, and if it has the authority, send the device information to the control device.
  • the inquiry signal includes a random number instruction
  • the IoT device can generate the first random number and the second random number of the IoT device according to the random number instruction, and then obtain the interval between the first random number and the second random number. If the difference is less than 0, it is determined that the IoT device has backscattering authority.
  • the first random number may be a random integer from 0 to n
  • the second random number is a random integer greater than 0.
  • the difference obtained by subtracting the second random number from the first random number is less than 0, it is determined that the IoT device has the backscattering authority. For example, if the first random number is 5 and the second random number is 6, then the difference between the first random number and the second random number is -1. Since -1 is less than 0, it is determined that the IoT device has a reverse To scatter permissions.
  • the IoT device can receive multiple query signals sent by the control device, and can generate a first random number and a second random number according to the random number instruction in the query signal, where the first random number can be 0 to n. , and the second random number is a random integer greater than 0.
  • the difference between the first random number and the second random number is used as the updated first random number.
  • the IoT device has the backscattering authority; if the first random number obtained by the latest update is greater than or equal to 0, when the next query signal sent by the control device is received , taking the difference between the first random number obtained by the latest update and the second random number as the first random number after the update, until the first random number obtained by the latest update is less than 0.
  • the IoT device when the IoT device receives an inquiry signal, it can subtract a second random number from the first random number to obtain the updated first random number; when the IoT device receives the next inquiry signal, Then, a second random number is subtracted from the updated first random number, and so on, until the first random number is less than 0, it is determined that the IoT device has the backscattering authority.
  • the IoT device determines that the IoT device has the backscattering authority when the fourth inquiry signal is received.
  • n can be determined according to dimensions such as the density and total number of IoT devices in the environment where the IoT devices currently belong. Multiple dimensions can intelligently adjust the size of n to prevent some IoT The value of the first random number obtained by the device is too large, and the device cannot have the backscattering authority for a long time.
  • the query signal may also indicate the total number of IoT devices in the environment to which the IoT devices belong.
  • the IoT device may obtain a threshold for the number of IoT devices according to the total number of IoT devices in the environment to which the IoT device belongs. If the number of received interrogation signals reaches the number threshold, it is determined that the IoT device has the backscattering authority.
  • the quantity threshold may be obtained by the user through controlling device settings, may also be intelligently determined by the IoT device analyzing the current environment, or may be set by a technician, which is not limited in this embodiment of the present application.
  • the IoT device has a reverse To scatter permissions.
  • the control device After the IoT device sends the device information to the control device, the control device generates a first control signal of the IoT device.
  • the IoT device may receive a first control signal sent by the control device, where the first control signal includes a device identifier of at least one IoT device.
  • the control device may send the control information to the Internet of Things device by means of broadcasting information.
  • the IoT device can first receive the continuous wave signal with the transmission duration Tcw1 sent by the control device, and then receive the control signal with the transmission duration Tcontrol sent by the control device, that is, the first control signal, and then continue Receive the continuous wave signal with the transmission duration Tcw2 sent by the control device.
  • the first control signal whose transmission duration is Tcontrol indicates that the IoT device can continuously receive the first control signal within the transmission duration of Tcontrol.
  • the first control signal may also be one or more; as shown in FIG. 6
  • the process of signal reception can be looped ncontrol times.
  • the IoT device can continuously receive continuous wave signals within the transmission duration of ncontrol Tcw1s, continuously receive the first control signal within the transmission duration of ncontrol Tcontrols, and continuously receive continuous wave signals within the transmission duration of ncontrol Tcw2s. wave signal.
  • the IoT device can receive at least one continuous wave signal in the total duration of ncontrol Tcw1 and ncontrol Tcw2.
  • the radio frequency energy capture module in the IoT device can capture continuous wave signals, and convert at least one received continuous wave signal into signal energy, which can supply power to the backscatter transceiver in the IoT device. Through this method, it can be ensured that the IoT device receives enough continuous wave signals to be converted into sufficient energy, and it can also be ensured that the IoT device receives the first control signal.
  • the IoT device including the backscatter transceiver device cannot pass through
  • the continuous wave signal obtains energy, but is supplied by its own power supply to backscatter the signal.
  • the IoT device can receive the first control signal instead of the continuous wave signal, can continue to receive the first control signal within the transmission duration of Tcontrol, and can cycle ncontrol times, that is, it continues within the transmission duration of ncontrol Tcontrols.
  • a first control signal is received. Through this method, it can be ensured that the IoT device receives the first control signal.
  • the first control signal includes the device identifier of the IoT device, switch from the first device state to the second device state according to the first control signal.
  • the first control signal can be sent by the control device through broadcast information, all IoT devices inquired by the control device can receive the first control signal, and if the first control signal includes the IoT device
  • the device identifier that is, the UID
  • the first control signal can control the IoT device to switch from the first device state to the second device state.
  • the first control signal may be an operation of inverting the state of the Internet of Things device. For example, before responding to the first control signal, the state of the Internet of Things device is the ON state, that is, the first device state, and after responding to the first control signal, the state of the Internet of Things device is the ON state. , the IoT device switches the state to off, that is, the second device state.
  • the IoT device can start a countdown timer after switching from the first device state to the second device state according to the first control signal. If the running time of the countdown timer reaches the preset time Tcount, the IoT device is switched from the second device state to the second device state.
  • the device state is switched to the first device state.
  • the The control signal is switched from the on state (water spray state) to the off state (water spray stop state), and the countdown timer is started at the same time.
  • the running time of the countdown timer reaches the preset time Tcount, the IoT device is switched from an off state (stop water spraying state) to an on state (water spraying state). This is because, when the control device on the golf cart is close to the IoT device 1 , the first control signal can be sent to the IoT device 1 .
  • the control device on the golf cart is far away from the IoT device 1, the second control signal broadcast by the control device cannot be received by the IoT device 1 because the distance is too far, so that the IoT device 1 will always be in the off state (stop water spray state). Therefore, by setting the method of starting the countdown timer, the IoT device can be switched to the original device state, that is, the first device state in time.
  • the Internet of Things device After successfully responding to the first control signal of the Internet of Things device, the Internet of Things device will also send confirmation information to the control device through backscattering technology, where the confirmation information includes the device identification of the Internet of Things device and the state of the second device.
  • the Internet of Things device may further determine whether to send confirmation information to the control device.
  • the determination method has been described in detail in Embodiment 420, and details are not repeated here.
  • the IoT device after receiving the interrogation signal and the at least one continuous wave signal sent by the control device, the IoT device can backscatter the device information in response to the interrogation signal by using the energy obtained from the at least one continuous wave signal. Then, it receives the first control signal and at least one continuous wave signal sent by the control device, changes the device state of the IoT device at this time according to the first control signal, and finally backscatters the energy obtained from the at least one continuous wave signal. Confirm the information. First, the IoT device can obtain energy from at least one continuous wave signal, thereby reducing the power consumption of the IoT device.
  • IoT devices use backscattering technology to send information to control devices, which can reduce the delay of information interaction.
  • the backscattering technology used by IoT devices can also make the distance measurement between the IoT device and the control device more accurate and can measure shorter distances. Therefore, through the embodiments of the present application, it is possible to control the IoT device in a short distance, quickly and with low power consumption through the control device.
  • FIG. 7 is a schematic flowchart of another method for controlling an Internet of Things device according to an embodiment of the present application.
  • the execution subject of this embodiment may be a control device, and the control device may include the hardware architecture of the control device as shown in FIG. 3 .
  • the method may include the following steps:
  • the control device may first send a continuous wave signal with a transmission duration of Tcw1 to at least one IoT device, then send an inquiry signal with a transmission duration of Trequest, and then continue to send a continuous wave signal with a transmission duration of Tcw2 .
  • the firing process can be looped nsearch times.
  • the nsearch may be set by a user or a researcher, or may be intelligently determined by the control device according to the current application scenario environment, which is not limited in this embodiment of the present application.
  • the nsearch intelligently determined by the control device can ensure that at least one IoT device receives the interrogation signal and enough CW signals to capture enough signal energy.
  • the control device may perform information sorting on the at least one piece of device information. Specifically, the control device may acquire, from at least one piece of device information, the device identifier of the IoT device corresponding to each device information, that is, the UID and the device state, that is, on or off. The control device can also calculate the received signal strength indication (Received Signal Strength Indication, RSSI), phase (Phase) and reception time corresponding to different UIDs through the radio frequency front end as shown in Figure 3.
  • RSSI Receiveived Signal Strength Indication
  • Phase Phase
  • the control device can generate a table from this information to record the RSSI, phase, time, and device status of the IoT device corresponding to each UID. For example, as shown in Table 1, the RSSI of the IoT device whose UID is AA001 is -58, the phase is 1.89, the reception time is 12.23.23.798, and the state is off.
  • the control device can count the information of the IoT devices that can be detected in the current environment into the table.
  • first control signal Generate a first control signal according to at least one device information, where the first control signal includes a device identifier of at least one IoT device, and the first control signal is used to indicate that each device identifier corresponds to the IoT device by the first device of each IoT device.
  • the state switches to the second device state of each IoT device.
  • the control device can determine at least one IoT device whose state needs to be changed. For example, as shown in Table 1, if the control device determines that AA001 and AA003 need to be switched to the ON state, and AA002 needs to be switched to the OFF state, it can generate a first control signal according to at least one piece of device information, and use the first control signal to Control at least one IoT device.
  • the control device may determine the corresponding first control signal according to at least one piece of device information in Table 1: ⁇ on ⁇ UID[AA001,AA003] ⁇ off ⁇ UID[AA002] ⁇ .
  • the control device may send the first control signal to the at least one Internet of Things device by broadcasting information. Specifically, as shown in FIG. 6 , the control device may first send a continuous wave signal with a transmission duration of Tcw1 to at least one IoT device, then send a first control signal with a transmission duration of Tcontrol, and then continue to send a continuous wave signal with a transmission duration of Tcw2 wave signal.
  • the launch process can be looped ncontrol times.
  • the ncontrol may be set by a user or a researcher, or may be intelligently determined by the control device according to the current application scenario environment, or may be determined according to nsearch, which is not limited in this embodiment of the present application.
  • the ncontrol intelligently determined by the control device can ensure that at least one IoT device receives the first control signal and enough continuous wave signals to capture enough signal energy.
  • each confirmation message in the at least one confirmation message includes a device identifier and a second device state of the Internet of Things device corresponding to each confirmation message.
  • the control device may update the table previously obtained according to the at least one device information according to the received at least one confirmation message. For example, if the control device learns from at least one confirmation message that AA001 and AA003 in Table 1 have been switched to the ON state, and AA002 has been switched to the OFF state, the content in Table 1 can be updated to obtain the following Table 2 :
  • the control device can send an inquiry signal and at least one continuous wave signal to at least one Internet of Things device, and the at least one continuous wave signal can provide signal energy for at least one Internet of Things device, so that the Internet of Things device can pass the reaction
  • At least one device information is sent to the control device to the scattering technique and the signal energy.
  • the control device can generate a first control signal according to the at least one device information, and the first control signal can change the device state of the IoT device whose device state needs to be changed among the at least one IoT device.
  • the control device may receive at least one confirmation message sent by the IoT device, thereby updating the saved device state of each IoT device.
  • the transmitter included in the control device does not contain amplifiers to provide signal gain during the period, the communication distance between such a control device and the IoT device is short and can be communicated within a range of less than 10 meters. Therefore, the position information of the IoT device is implied in the backscattered signal of the IoT device, and the control device can control the IoT device in a smaller range more accurately.
  • FIG. 8 is a schematic flowchart of still another method for controlling an Internet of Things device according to an embodiment of the present application.
  • the executive body of this embodiment includes a control device and at least one Internet of Things device.
  • the number of IoT devices may be more than three, and the embodiment of the present application uses three IoT devices, namely, IoT device 1, IoT device 2, and IoT device 3 as an example.
  • the control method of the Internet of Things device may include the following steps:
  • the control device sends an inquiry signal to at least one IoT device.
  • At least one IoT device sends at least one piece of device information to the control device by using the backscatter technology.
  • the control device generates a first control signal according to at least one piece of device information.
  • the control device sends a first control signal to at least one Internet of Things device.
  • each IoT device in the at least one IoT device detects that the first control signal includes the device identifier of the IoT device, it switches from the first device state to the second device state according to the first control signal.
  • At least one IoT device sends at least one confirmation message to the control device by using the backscatter technology.
  • control device and the IoT device can perform signal interaction through the backscattering technology, which can inherit the advantages of low power consumption, low delay and accurate distance measurement of the backscattering technology, so that the control device can be close-range and fast. , Control IoT devices with low power consumption.
  • FIG. 9 is a schematic diagram of a unit of a communication apparatus provided by an embodiment of the present application.
  • the control apparatus of the IoT device shown in FIG. 9 may be used to perform some or all of the functions in the method embodiments described in the above-mentioned FIG. 4 , FIG. 7 , and FIG. 8 .
  • the device may be an Internet of Things device or a control device, or a device in an Internet of Things device or a control device, or a device that can be matched and used with the Internet of Things device or the control device.
  • the logical structure of the apparatus may include: a transceiver unit 910 and a processing unit 920 . When the device is applied to IoT devices:
  • a transceiver unit 910 configured to receive an inquiry signal sent by the control device
  • the above-mentioned transceiver unit 910 is further configured to send device information to the control device through backscattering technology in response to the inquiry signal, where the device information includes the device identifier of the IoT device and the first device state;
  • the above-mentioned transceiver unit 910 is further configured to receive the first control signal sent by the control device;
  • the processing unit 920 is configured to switch from the first device state to the second device state according to the first control signal if the first control signal includes the device identifier of the IoT device.
  • the above-mentioned transceiver unit 910 is further configured to receive at least one continuous wave signal sent by the control device before sending the device information to the control device through the backscatter technology in response to the inquiry signal; Signal energy, which is used to power IoT devices.
  • the above-mentioned transceiver unit 910 is further configured to send a The device sends confirmation information, where the confirmation information includes the device identification of the IoT device and the state of the second device.
  • the above-mentioned transceiver unit 910 is further configured to receive at least one continuous wave signal sent by the control device before sending the confirmation information to the control device; the above-mentioned processing unit 920 is further configured to obtain a signal through the at least one continuous wave signal Energy, signal energy is used to power IoT devices.
  • the transceiver unit 910 is further configured to switch from the second device state to the first device state.
  • the interrogation signal further includes a random number instruction.
  • the above-mentioned processing unit 920 before sending the device information to the control device through backscattering technology in response to the inquiry signal, is further configured to generate a first random number and a second random number according to the random number instruction; The difference between the random number and the second random number; if the difference is less than 0, it is determined that the above-mentioned transceiver unit 910 is also used to send device information to the control device.
  • the transceiver unit 910 before sending device information to the control device through backscattering technology in response to the query signal, the transceiver unit 910 is further configured to receive multiple query signals sent by the control device; the processing unit 920 is further configured to generate The first random number and the second random number; when receiving an inquiry signal sent by the control device, the difference between the first random number and the second random number is used as the updated first random number; The first random number is greater than or equal to 0, then when the next inquiry signal sent by the control device is received, the difference between the first random number and the second random number obtained by the latest update is taken as the updated first random number. until the first random number obtained by the latest update is less than 0; if the first random number obtained by the latest update is less than 0, it is determined that the above-mentioned transceiver unit 910 is also used for sending device information to the control device.
  • the interrogation signal is also used to indicate the total number of IoT devices in the environment to which the IoT devices belong.
  • the transceiver unit 910 before sending device information to the control device through backscattering technology in response to the query signal, is further configured to receive multiple query signals sent by the control device; the processing unit 920 is further configured to The total number of IoT devices in the environment to which the IoT devices belong, and the threshold for the number of IoT devices is obtained; if the number of received inquiry signals reaches the number threshold, it is determined to send device information to the control device.
  • a transceiver unit 910 sending an inquiry signal to at least one IoT device
  • the above-mentioned transceiver unit 910 is further configured to receive at least one device information sent by at least one Internet of Things device through backscattering technology, where the at least one device information includes the device identifier of each Internet of Things device in the at least one Internet of Things device and each Internet of Things device. the first device state;
  • the processing unit 920 is configured to generate a first control signal according to at least one device information, where the first control signal includes a device identifier of at least one IoT device, and the first control signal is used to indicate that each device identifier corresponds to the IoT device by each IoT device.
  • the first device state is switched to the second device state of each IoT device;
  • the above-mentioned transceiver unit 910 is further configured to send a first control signal to at least one IoT device;
  • the above-mentioned transceiver unit 910 is further configured to receive at least one confirmation message sent by at least one IoT device, and each confirmation message in the at least one confirmation message includes a device identifier and a second device state of the IoT device corresponding to each confirmation message.
  • the above-mentioned transceiver unit 910 is further configured to send at least one continuous wave signal to at least one IoT device before receiving at least one device information sent by at least one IoT device through backscattering technology, at least one Continuous wave signals are used to provide signal energy.
  • the above-mentioned transceiver unit 910 is further configured to send at least one continuous wave signal to at least one IoT device before receiving at least one confirmation message sent by at least one IoT device, and the at least one continuous wave signal is used for Provides signal energy.
  • FIG. 10 is a simplified schematic diagram of the physical structure of a communication device provided by an embodiment of the present application.
  • the device includes a processor 1010, a memory 1020, and a communication interface 1030.
  • the processor 1010, the memory 1020, and the communication interface 1030 pass through One or more communication bus connections.
  • the processor 1010 is configured to support the communication device to perform functions corresponding to the methods in FIGS. 2 , 5 and 8 .
  • the processor 1010 may be a central processing unit (CPU), a network processor (NP), a hardware chip or any combination thereof.
  • the memory 1020 is used to store program codes and the like.
  • the memory 1020 may include volatile memory (volatile memory), such as random access memory (RAM); the memory 1020 may also include non-volatile memory (non-volatile memory), such as read-only memory (read-only memory) only memory, ROM), flash memory (flash memory), hard disk drive (HDD) or solid-state drive (solid-state drive, SSD); the memory 1020 may also include a combination of the above-mentioned types of memory.
  • the communication interface 1030 is used for sending and receiving data, information or messages, etc., and can also be described as a transceiver, a transceiver circuit, and the like.
  • the processor 1010 may call the program code stored in the memory 1020 to perform the following operations:
  • the control communication interface 1030 receives the inquiry signal sent by the control device
  • the control communication interface 1030 sends device information to the control device through backscattering technology in response to the inquiry signal, where the device information includes the device identifier of the IoT device and the first device state;
  • the control communication interface 1030 receives the first control signal sent by the control device
  • the processor 1010 calls the program code stored in the memory 1020 to switch from the first device state to the second device state according to the first control signal if the first control signal includes the device identifier of the IoT device.
  • control communication interface 1030 receives at least one continuous wave signal sent by the control device before sending the device information to the control device through the backscatter technology in response to the inquiry signal; obtains the signal energy through the at least one continuous wave signal, Signal energy is used to power IoT devices.
  • the control communication interface 1030 sends an acknowledgement to the control device information, and the confirmation information includes the device identification of the IoT device and the state of the second device.
  • control communication interface 1030 before the control communication interface 1030 sends the confirmation information to the control device, it receives at least one continuous wave signal sent by the control device; the processor 1010 invokes the program code stored in the memory 1020 to obtain through at least one continuous wave signal Signal energy, which is used to power IoT devices.
  • the communication interface 1030 is controlled to switch from the second device state to the first device state.
  • the interrogation signal further includes a random number instruction.
  • the processor 1010 before sending the device information to the control device through the backscattering technique in response to the inquiry signal, invokes the program code stored in the memory 1020 to generate the first random number and the second random number according to the random number instruction ; Obtain the difference between the first random number and the second random number; if the difference is less than 0, determine that the control communication interface 1030 sends device information to the control device.
  • the control communication interface 1030 before sending device information to the control device through backscattering technology in response to the query signal, the control communication interface 1030 receives multiple query signals sent by the control device; the processor 1010 calls the program code stored in the memory 1020 Generate a first random number and a second random number; when receiving an inquiry signal sent by the control device, use the difference between the first random number and the second random number as the updated first random number; if the latest update The obtained first random number is greater than or equal to 0, then when the next inquiry signal sent by the control device is received, the difference between the recently updated first random number and the second random number is taken as the updated first random number. A random number until the first random number obtained by the latest update is less than 0; if the first random number obtained by the latest update is less than 0, it is determined that the control communication interface 1030 sends device information to the control device.
  • the interrogation signal is also used to indicate the total number of IoT devices in the environment to which the IoT devices belong.
  • the control communication interface 1030 receives multiple query signals sent by the control device; the processor 1010 calls the program code stored in the memory 1020 According to the total number of IoT devices in the environment to which the IoT devices belong, the number threshold of IoT devices is obtained; if the number of received inquiry signals reaches the number threshold, it is determined to send device information to the control device.
  • the processor 1010 may call program codes stored in the memory 1020 to perform the following operations:
  • the control communication interface 1030 receives at least one piece of device information sent by at least one Internet of Things device through backscattering technology, where the at least one piece of device information includes a device identifier of each Internet of Things device in the at least one Internet of Things device and a first value of each Internet of Things device. equipment status;
  • the processor 1010 invokes the program code stored in the memory 1020 to generate a first control signal according to at least one piece of device information, the first control signal includes a device identifier of at least one IoT device, and the first control signal is used to indicate that each device identifier corresponds to the IoT device Switch from the first device state of each IoT device to the second device state of each IoT device;
  • the control communication interface 1030 receives at least one confirmation message sent by at least one IoT device, and each confirmation message in the at least one confirmation message includes a device identifier and a second device state of the IoT device corresponding to each confirmation message.
  • control communication interface 1030 sends at least one continuous wave signal, at least one continuous wave signal to the at least one IoT device before receiving the at least one device information sent by the at least one IoT device through the backscatter technology Used to provide signal energy.
  • control communication interface 1030 sends at least one continuous wave signal to the at least one IoT device before receiving the at least one confirmation message sent by the at least one IoT device, where the at least one continuous wave signal is used to provide signal energy .
  • the units in the processing device in the embodiment of the present invention may be combined, divided, and deleted according to actual needs.
  • a computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • Computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center over a wire (e.g.
  • a computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, or the like that contains one or more of the available mediums integrated.
  • Useful media may be magnetic media (eg, floppy disks, storage disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.

Abstract

L'invention concerne un procédé de commande de dispositif de l'Internet des objets (IoT). Ledit procédé comporte les étapes consistant à: recevoir un signal d'interrogation envoyé par un dispositif de commande; envoyer, en réponse au signal d'interrogation, des informations de dispositif au dispositif de commande au moyen d'une technique de rétrodiffusion, le dispositif information comportant un identifiant de dispositif et un premier état de dispositif d'un dispositif IoT; recevoir un premier signal de commande envoyé par le dispositif de commande; et si le premier signal de commande comporte l'identifiant de dispositif du dispositif IoT, passer du premier état de dispositif à un second état de dispositif selon le premier signal de commande. Au moyen dudit procédé, le dispositif IoT peut être commandé au moyen du dispositif de commande dans une étendue proche, rapidement et avec une faible consommation d'énergie.
PCT/CN2020/101479 2020-07-10 2020-07-10 Procédé de commande de dispositif de l'internet des objets et appareil de communication WO2022006908A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/101479 WO2022006908A1 (fr) 2020-07-10 2020-07-10 Procédé de commande de dispositif de l'internet des objets et appareil de communication
CN202080099512.1A CN115398929A (zh) 2020-07-10 2020-07-10 一种物联网设备的控制方法及通信装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/101479 WO2022006908A1 (fr) 2020-07-10 2020-07-10 Procédé de commande de dispositif de l'internet des objets et appareil de communication

Publications (1)

Publication Number Publication Date
WO2022006908A1 true WO2022006908A1 (fr) 2022-01-13

Family

ID=79553588

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/101479 WO2022006908A1 (fr) 2020-07-10 2020-07-10 Procédé de commande de dispositif de l'internet des objets et appareil de communication

Country Status (2)

Country Link
CN (1) CN115398929A (fr)
WO (1) WO2022006908A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114666779A (zh) * 2022-04-08 2022-06-24 深圳市欧瑞博科技股份有限公司 设备连接方法、装置、计算机设备和存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107092243A (zh) * 2017-05-04 2017-08-25 中国科学院高能物理研究所 基于物联网的电源控制智能安全监控系统
CN108141646A (zh) * 2015-08-12 2018-06-08 华盛顿大学 反向散射装置及结合反向散射装置的网络系统
CN110324068A (zh) * 2018-03-28 2019-10-11 上海华为技术有限公司 射频识别系统、组建中继网络的方法和阅读器、中继器
US20200052734A1 (en) * 2016-10-18 2020-02-13 University Of Washington Backscatter systems, devices, and techniques utilizing css modulation and/or higher order harmonic cancellation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6169474B1 (en) * 1998-04-23 2001-01-02 Micron Technology, Inc. Method of communications in a backscatter system, interrogator, and backscatter communications system
US6192222B1 (en) * 1998-09-03 2001-02-20 Micron Technology, Inc. Backscatter communication systems, interrogators, methods of communicating in a backscatter system, and backscatter communication methods
US20060187060A1 (en) * 2005-02-07 2006-08-24 Colby Steven M Identity devices including radio frequency shielding
US8872633B2 (en) * 2005-07-20 2014-10-28 Intelleflex Corporation Ramped interrogation power levels
US8237546B2 (en) * 2007-06-28 2012-08-07 Symbol Technologies, Inc. Backscatter limited tags
JP6182948B2 (ja) * 2013-04-16 2017-08-23 株式会社村田製作所 無線式情報取得システム、無線式情報取得システムの親機、および、無線式情報取得システムの子機
CN107980214B (zh) * 2015-08-09 2021-08-17 谷歌有限责任公司 用于物联网装置的访问控制的方法、存储介质和系统
KR102090620B1 (ko) * 2018-11-27 2020-03-18 성균관대학교 산학협력단 무선 전력 이종통신망에서 후방산란 기반 협력통신 시스템 및 그 방법
CN110971551B (zh) * 2019-11-27 2022-11-08 太原理工大学 一种基于无源感知技术的跨协议通信平台

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108141646A (zh) * 2015-08-12 2018-06-08 华盛顿大学 反向散射装置及结合反向散射装置的网络系统
US20200052734A1 (en) * 2016-10-18 2020-02-13 University Of Washington Backscatter systems, devices, and techniques utilizing css modulation and/or higher order harmonic cancellation
CN107092243A (zh) * 2017-05-04 2017-08-25 中国科学院高能物理研究所 基于物联网的电源控制智能安全监控系统
CN110324068A (zh) * 2018-03-28 2019-10-11 上海华为技术有限公司 射频识别系统、组建中继网络的方法和阅读器、中继器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114666779A (zh) * 2022-04-08 2022-06-24 深圳市欧瑞博科技股份有限公司 设备连接方法、装置、计算机设备和存储介质
CN114666779B (zh) * 2022-04-08 2024-02-20 深圳市欧瑞博科技股份有限公司 设备连接方法、装置、计算机设备和存储介质

Also Published As

Publication number Publication date
CN115398929A (zh) 2022-11-25

Similar Documents

Publication Publication Date Title
Čabarkapa et al. Comparative analysis of the bluetooth low-energy indoor positioning systems
US11178508B2 (en) Detection network self-discovery
US11327147B2 (en) Systems and methods for determining locations of wireless sensor nodes based on anchorless nodes and known environment information
CN107040288B (zh) 形成无线rf电力采集和数据网络的设备、方法及存储介质
WO2018133311A1 (fr) Procédé et dispositif de positionnement en intérieur
US9635690B2 (en) Method, apparatus, and computer program product for improving security for wireless communication
CN103460263B (zh) 在室探测系统、在室探测方法
CN111770012B (zh) 社交信息处理方法、装置以及可穿戴设备
CN109257197A (zh) 一种物联网终端升级方法、装置、系统、终端及存储介质
Guidara et al. Energy-efficient on-demand indoor localization platform based on wireless sensor networks using low power wake up receiver
US9265080B1 (en) Method, apparatus, and computer program product for multi-device output mode configuration
CN111586838B (zh) 煤矿井下精确定位方法
WO2022006908A1 (fr) Procédé de commande de dispositif de l'internet des objets et appareil de communication
EP2995128A2 (fr) Délégation de recherche de réseau wifi et de surveillance du trafic
Mekki et al. Indoor positioning system for IoT device based on BLE technology and MQTT protocol
CN111970639A (zh) 保持安全距离的方法、装置、终端设备和存储介质
TWI785145B (zh) 通信網路的定位方法和系統
Sophia et al. Bluetooth low energy based indoor positioning system using ESP32
Subhan et al. Analysis of Bluetooth signal parameters for indoor positioning systems
US9749787B2 (en) ZigBee-based article searching method, device and system
CN105472729A (zh) 一种基于WiFi室内定位技术的大数据处理系统和方法
TW201932865A (zh) 定位系統以及定位方法
CN113747540A (zh) 空调与遥控器的配对处理方法、装置、空调及其组网系统
CN113419213A (zh) 测距方法、测距装置、电子设备及计算机可读取存储介质
Hepeng et al. Indoor location system using RFID and ultrasonic sensors

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20944398

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20944398

Country of ref document: EP

Kind code of ref document: A1