CN115398929B

CN115398929B - Control method and communication device of Internet of things equipment

Info

Publication number: CN115398929B
Application number: CN202080099512.1A
Authority: CN
Inventors: 邵帅
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2024-06-18
Anticipated expiration: 2040-07-10
Also published as: CN115398929A; WO2022006908A1

Abstract

A control method of an internet of things device, the method comprising: receiving an inquiry signal sent by control equipment; transmitting device information to the control device through a backscattering technology in response to the query signal, wherein the device information comprises a device identifier and a first device state of the Internet of things device; receiving a first control signal sent by control equipment; and if the first control signal comprises the equipment identifier of the equipment of the Internet of things, switching from the first equipment state to the second equipment state according to the first control signal. By the method, the Internet of things equipment can be controlled in a short distance, quickly and with low power consumption through the control equipment.

Description

Control method and communication device of Internet of things equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a control method and a communications device for an internet of things device.

Background

The internet of things (Internet of Things, ioT), i.e. "internet of things connected", is an extended and expanded network based on the internet, and is a huge network formed by combining various information sensing devices with the internet. With the technology of the internet of things, 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.

At present, the intelligent sensing system mainly uses short-distance wireless transmission standards such as Bluetooth, WIFI and Zigbee, but the system of the wireless communication standards has the defects of high power consumption, high delay and high difficulty in distance control. For example, current IoT devices need not only support the control powering of their logic circuits, but also require more energy to perform wireless transmit and receive operations, resulting in increased system power consumption; for another example, the wireless technology communication system in the current IoT device is complex, and a more complex application layer standard protocol needs to be completed when two-way communication is performed, so that the system delay is high; for another example, the intelligent sensing system using bluetooth, WIFI, zigbee needs to measure distance by using auxiliary means such as the detection signal RSSI, AOA, TOF, but these auxiliary means can only measure distances greater than 20 meters, and it is difficult to complete measurement of shorter distances.

Disclosure of Invention

The application discloses a control method and a communication device of Internet of things equipment, which can realize the short-distance, rapid and low-power-consumption control of the Internet of things equipment through the control equipment.

In a first aspect, an embodiment of the present application provides a control method for an internet of things device, which is applied to the internet of things device, where the method includes:

receiving an inquiry signal sent by control equipment;

Transmitting device information to the control device through a backscattering technology in response to the query signal, wherein the device information comprises a device identifier and a first device state of the Internet of things device;

Receiving a first control signal sent by control equipment;

and if the first control signal comprises the equipment identifier of the equipment of the Internet of things, switching from the first equipment state to the second equipment state according to the first control signal.

In one embodiment, at least one continuous wave signal transmitted by the control device is received before the device information is transmitted to the control device by a backscatter technique in response to the interrogation signal; and acquiring signal energy through at least one continuous wave signal, wherein the signal energy is used for supplying power to the equipment of the Internet of things.

In an embodiment, if the first control signal includes a device identifier of the internet of things device, after switching from the first device state to the second device state according to the first control signal, acknowledgement information is sent to the control device, where the acknowledgement information includes the device identifier of the internet of things device and the second device state.

In one embodiment, at least one continuous wave signal transmitted by the control device is received before the acknowledgement information is transmitted to the control device; and acquiring signal energy through at least one continuous wave signal, wherein the signal energy is used for supplying power to the equipment of the Internet of things.

In an embodiment, if the first control signal includes a device identifier of the internet of things device, after the first control signal is switched from the first device state to the second device state according to the first control signal, if the second control signal for the internet of things device is not received within a preset time period after the first control signal is switched from the first device state to the second device state, the second device state is switched to the first device state.

In one embodiment, the interrogation signal further includes a random number instruction.

In one embodiment, the first random number and the second random number are generated according to a random number instruction before transmitting the device information to the control device by a backscatter technique in response to the interrogation signal; obtaining a difference value between the first random number and the second random number; if the difference is less than 0, it is determined to transmit device information to the control device.

In one embodiment, a plurality of interrogation signals transmitted by a control device are received before device information is transmitted to the control device by a backscatter technique in response to the interrogation signals; generating a first random number and a second random number; when an inquiry signal sent by the control equipment is received, taking the difference value between the first random number and the second random number as the updated first random number; 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 equipment is received, taking the difference value between the first random number obtained by the latest update and the second random number as the updated first random number until the first random number obtained by the latest update is smaller than 0; if the latest updated first random number is smaller than 0, the device information is determined to be sent to the control device.

In an embodiment, the query signal is further used to indicate a sum of the number of internet of things devices in the environment to which the internet of things device belongs.

In one embodiment, a plurality of interrogation signals transmitted by a control device are received before device information is transmitted to the control device by a backscatter technique in response to the interrogation signals; acquiring a quantity threshold of the Internet of things equipment according to the quantity sum of the Internet of things equipment in the environment of the Internet of things equipment; if the number of received interrogation signals reaches a number threshold, it is determined to transmit device information to the control device.

In a second aspect, an embodiment of the present application provides a control method for an internet of things device, applied to a control device, where the method includes:

transmitting an interrogation signal to at least one internet of things device;

Receiving at least one piece of equipment information sent by at least one piece of internet of things equipment through a backscattering technology, wherein the at least one piece of equipment information comprises an equipment identifier of each piece of internet of things equipment in the at least one piece of internet of things equipment and a first equipment state of each piece of internet of things equipment;

generating a first control signal according to the at least one piece of equipment information, wherein the first control signal comprises equipment identifiers of at least one piece of equipment of the Internet of things, and the first control signal is used for indicating that the equipment corresponding to each equipment identifier is switched from a first equipment state of each piece of equipment of the Internet of things to a second equipment state of each piece of equipment of the Internet of things;

sending a first control signal to at least one internet of things device;

And receiving at least one piece of confirmation information sent by at least one piece of internet of things equipment, wherein each piece of confirmation information in the at least one piece of confirmation information comprises an equipment identifier and a second equipment state of the corresponding piece of internet of things equipment.

In an embodiment, at least one continuous wave signal is transmitted to at least one internet of things device prior to receiving at least one device information transmitted by the at least one internet of things device via a backscatter technique, the at least one continuous wave signal being used to provide signal energy.

In an embodiment, at least one continuous wave signal is sent to at least one internet of things device before at least one acknowledgement message sent by the at least one internet of things device is received, the at least one continuous wave signal being used to provide signal energy.

In a third aspect, an embodiment of the present application provides a communication apparatus, applied to an internet of things device, where the apparatus includes:

the receiving and transmitting unit is used for receiving the inquiry signal sent by the control equipment;

The receiving and transmitting unit is further used for responding to the inquiry signal and transmitting equipment information to the control equipment through a backscattering technology, wherein the equipment information comprises equipment identification and a first equipment state of the Internet of things equipment;

the receiving and transmitting unit is also used for receiving a first control signal sent by the control equipment;

and the processing unit is used for responding to the first control signal and switching from the first equipment state to the second equipment state if the first control signal comprises the equipment identifier of the equipment of the Internet of things.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, applied to a control device, including:

the receiving and transmitting unit is used for transmitting an inquiry signal to at least one Internet of things device;

The receiving and transmitting unit is further configured to receive at least one device information sent by at least one internet of things device through a backscatter technology, where the at least one device information includes a device identifier of each internet of things device in the at least one internet of things device and a first device state of each internet of things device;

the processing unit is used for generating a first control signal according to the at least one piece of equipment information, wherein the first control signal comprises equipment identifiers of at least one piece of equipment of the Internet of things, and the first control signal is used for indicating that the equipment corresponding to each equipment identifier is switched from a first equipment state of each piece of equipment of the Internet of things to a second equipment state of each piece of equipment of the Internet of things;

The receiving and transmitting unit is further used for transmitting a first control signal to at least one internet of things device;

the transceiver unit is further configured to receive at least one acknowledgement message sent by at least one internet of things device, where each acknowledgement message in the at least one acknowledgement message includes a device identifier and a second device state of each acknowledgement message corresponding to the internet of things device.

In a fifth aspect, an embodiment of the present application provides a communication apparatus, including a processor, a memory, and a user interface, where the processor, the memory, and the user interface are connected to each other, and the memory is configured to store a computer program, where the computer program includes program instructions, and where the processor is configured to invoke the program instructions to perform a control method of an internet of things device as described in the first aspect, or a control method of an internet of things device as described in the second aspect.

In a sixth aspect, embodiments of the present application provide a computer readable storage medium storing one or more instructions adapted to be loaded by a processor and to perform a method of controlling an internet of things device as described in the first aspect, or a method of controlling an internet of things device as described in the second aspect.

In the embodiment of the application, the internet of things equipment receives an inquiry signal sent by control equipment; transmitting device information to the control device through a backscattering technology in response to the query signal, wherein the device information comprises a device identifier and a first device state of the Internet of things device; receiving a first control signal sent by control equipment; and if the first control signal comprises the equipment identifier of the equipment of the Internet of things, switching from the first equipment state to the second equipment state according to the first control signal. By the method, the Internet of things equipment can be controlled in a short distance, quickly and with low power consumption through the control equipment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1a is a schematic diagram of an internet of things device control application in a home scene according to an embodiment of the present application;

fig. 1b is a schematic diagram of an internet of things device control application in a golf course water spray scene according to an embodiment of the present application;

fig. 2a is a hardware architecture diagram of a backscatter transmitting-receiving device according to an embodiment of the present application;

FIG. 2b is a hardware architecture diagram of another backscatter transmitting-receiving device according to an embodiment of the present application;

FIG. 2c is a schematic diagram of a hardware architecture of a backscatter transmitting-receiving device according to an embodiment of the present application;

FIG. 3 is a hardware architecture diagram of a control device according to an embodiment of the present application;

Fig. 4 is a schematic flow chart of a control method of an internet of things device according to an embodiment of the present application;

FIG. 5 is a schematic diagram of an exemplary method for transmitting or receiving an interrogation signal according to an embodiment of the present application;

fig. 6 is a schematic diagram of a control signal transmitting or receiving method according to an embodiment of the present application;

Fig. 7 is a flow chart of another control method of an internet of things device according to an embodiment of the present application;

fig. 8 is a flow chart of a control method of an internet of things device according to an embodiment of the present application;

fig. 9 is a schematic unit diagram of a communication device according to an embodiment of the present application;

Fig. 10 is a simplified schematic diagram of a physical structure of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

In order to better understand the embodiments of the present application, the following description refers to the technical terms related to the embodiments of the present application:

The internet of things (Internet of Things, ioT) refers to collecting any object or process needing to be monitored, connected and interacted in real time through various devices and technologies such as various information sensors, radio frequency identification technologies, global positioning systems, infrared sensors and laser scanners, collecting various needed information such as sound, light, heat, electricity, mechanics, chemistry, biology and positions, and realizing ubiquitous connection of objects and people through various possible network access, thereby realizing intelligent perception, identification and management of objects and processes. Common IoT devices may include smart lights, sweeping robots, smart curtains, lawn water spray systems, and the like.

Backscattering (Back Scatter): refers to waves, particles or signals reflected back from the direction from which they came. The device can realize that the device does not generate signals but reflects the transmitted signals, thereby achieving the aim of information exchange. The signal back-scattered by the device may carry information in the device, or may imply location information of the device. The backscattering technology can be used for accurately measuring the distance between equipment or objects, and has the characteristics of low power consumption and low delay.

Continuous Wave (CW): the laser outputs waves in a continuous fashion rather than in a pulsed fashion. The continuous wave can be captured and converted into energy by the Internet of things equipment to supply power for the backscatter transmitting-receiving device in the Internet of things equipment.

In order to better understand the embodiments of the present application, a network architecture to which the embodiments of the present application are applicable is described below.

Referring to fig. 1a and fig. 1b, fig. 1a is a schematic diagram of an internet of things device control application in a home scene according to an embodiment of the present application. As shown in fig. 1a, the home scene may include an internet of things device 1, an internet of things device 2, an internet of things device 3 and a control device. The Internet of things equipment can be used for realizing on or off operation by sensing moving objects or equipment, and can be a sweeping robot, an intelligent lamp, an intelligent curtain, an intelligent air purifier, an intelligent air conditioner or an intelligent fan heater and the like. 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, etc. As shown in the figure, the internet of things device 1 takes an intelligent lamp as an example, the internet of things device 2 takes a sweeping robot as an example, the internet of things device 3 takes an intelligent curtain as an example, and the control device takes a mobile phone as an example. Of course, more than 3 internet of things devices and more than 1 control device may be included in the home scene, and the embodiment of the present application is not limited. In the application scenario, if the internet of things device receives the query signal sent by the control device, a series of operations may be performed to implement an on or off operation, that is, when the internet of things device detects that the control device is close, the corresponding on or off operation may be performed. It should be noted that, approaching may refer to that the distance between the control device and the internet of things device is within 10 meters, or that the internet of things device may receive a signal sent by the control device. For example, the internet of things device 1, i.e. the intelligent light, is turned off in the current state, and if a signal sent by the control device is detected, the current state may be switched to the turned-on state. For another example, the internet of things device 2, that is, the sweeping robot, is turned on in the current state, and may be switched to the off state if a signal sent by the control device is detected. Of course, the internet of things device 2 does not have to enter the closed state after detecting the signal sent by the control device, and can also continue to work, that is, the working state of the internet of things device and whether the signal sent by the control device is detected are not the only relationship, and can be configured by a user, a developer or an artificial intelligence system.

Fig. 1b is a schematic diagram of an internet of things device control application in a golf course water spray scenario. As shown in fig. 1b, the golf course water spray scene may also include an internet of things device 1, an internet of things device 2, an internet of things device 3 and a control device. The internet of things equipment 1-3 can be water spraying devices, the water spraying devices are used for spraying high-pressure water into grasslands, and the internet of things equipment 1-3 can be equipment which needs to be in an open state for a long time. The control device may be mounted or integrated on the golf cart or may be worn by a professional driving person. When the internet of things device 1 detects a signal sent by the control device, the current working state can be suspended, so that the high-pressure water of the internet of things device 1 can be prevented from being sprayed onto the golf cart; after the golf cart principle is adopted by the internet of things device 1, the internet of things device 1 can reenter the working state so as to continue irrigation of the lawn. Similarly, the internet of things devices 2 to 3 can also realize the same functions as the internet of things device 1.

Of course, the embodiment of the application is not limited to the above home scenes and golf course water spray scenes, and can be also suitable for application scenes of the cooperation of various internet of things devices and control devices, and the embodiment of the application is not limited.

As shown in fig. 2a, 2b and 2c, the embodiment of the present application provides a hardware architecture diagram of three types of backscatter transceivers. The backscatter transceiver device shown in fig. 2a includes an antenna, radio frequency energy capture, a receiver, a backscatter transmitter, energy management, and a microprocessor. The microprocessor in the backscattering transceiver in fig. 2a can output a signal to the control module of the internet of things device, and the control module of the internet of things device can control the on/off of the internet of things device. Wherein the output signal may be a single binary signal, e.g. 0 for "off" and 1 for "off". The rf energy capture device of fig. 2a may capture rf energy to power the backscatter transmitting and receiving device.

The backscatter transmitting and receiving device as shown in fig. 2b includes an antenna, a receiver, a backscatter transmitter, energy management, and a microprocessor. The back scattering receiving and transmitting device does not comprise radio frequency energy capture, and the Internet of things equipment comprises an Internet of things equipment control module and a power supply. The backscatter transmitting-receiving device is not powered by radio frequency energy capture, but by a power supply carried by the internet of things device.

The backscatter transceiver devices shown in fig. 2c include an antenna, radio frequency energy capture, receiver, backscatter transmitter, energy management, and microprocessor. The Internet of things equipment further comprises an Internet of things equipment control module, a switch and a power supply. The backscatter transmitting-receiving device can control the power supply and the control module of the equipment of the Internet of things to supply power to the backscatter transmitting-receiving device through the control switch. When the backscatter receiving and transmitting device does not receive the signal sent by the control equipment, the switch can be controlled, the switch is connected to the control module of the control equipment of the Internet of things, the power supply at the moment is not connected with the backscatter receiving and transmitting device, and the control module of the control equipment of the Internet of things can be in a power-down deep sleep mode. The back scattering transceiver device controls the switch through the radio frequency energy obtained by capturing the radio frequency energy.

In the embodiment of the present application, any one of the devices of the internet of things shown in fig. 1a and 1b may include any one of the 3 types of backscatter transceivers shown in fig. 2a, 2b and 2 c.

As shown in fig. 3, an embodiment of the present application provides a control device hardware architecture diagram. The control device may be an intelligent terminal integrated with a radio frequency front end. The radio frequency front end comprises an antenna, a transmitter and a receiver. The control device also includes a modem module and a Central Processing Unit (CPU). In the control device shown in fig. 3, the modem module may transmit Continuous Wave (CW), and the modem and the radio Frequency front end included in the modem module may transmit and receive signals modulated by Amplitude shift keying (Amplitude SHIFT KEYING, ASK), frequency shift keying (Frequency-SHIFT KEYING, FSK) and phase shift keying (PHASE SHIFT KEYING, PSK). In addition, the modem module shown in fig. 3 may be integrated into a central processor. The central processor and the modem module can be realized by general devices such as a microprocessor or a field programmable gate array (Field Programmable GATE ARRAY, FPGA).

In order to realize short-distance, rapid and low-power consumption control of the internet of things equipment through the control equipment, the embodiment of the application provides a control method and a communication device of the internet of things equipment, and the control method and the communication device of the internet of things equipment provided by the embodiment of the application are further described in detail.

Referring to fig. 4, fig. 4 is a flow chart of a control method of an internet of things device according to an embodiment of the present application. The execution body of the embodiment may be an internet of things device, where the internet of things device may include any one of three backscatter receiving and transmitting devices as shown in fig. 2a, fig. 2b or fig. 2 c. The method may comprise the steps of:

410. an interrogation signal sent by the control device is received.

Specifically, as shown in fig. 5, the internet of things device may first receive the continuous wave signal with the transmission duration of Tcw1 sent by the control device, then receive the query signal with the transmission duration of Trequest sent by the control device, and further continue to receive the continuous wave signal with the transmission duration of Tcw2 sent by the control device. The continuous wave signal with the transmission duration of Tcw1 indicates that the Internet of things equipment can continuously receive the continuous wave signal within the transmission duration of Tcw1, and the number of the continuous wave signals at the moment can be one or more; the query signal with the transmission duration of the Trequest indicates that the internet of things equipment can continuously receive the query signal within the transmission duration of the Trequest, and the query signal can be one or more; accordingly, the continuous wave signal of the transmission duration Tcw2 indicates that the internet of things device may continuously receive the continuous wave signal within the transmission duration of Tcw 2. The process of signal reception as shown in fig. 5 may be cycled nsearch times. That is, the internet of things device may continuously receive continuous wave signals for a transmission duration of nsearch Tcw1, continuously receive interrogation signals for a transmission duration of nsearch Trequest, and continuously receive continuous wave signals for a transmission duration of nsearch Tcw 2. The internet of things device may receive at least one continuous wave signal in a total duration of nsearch tcws 1 and nsearch tcws 2. The radio frequency energy capturing module in the internet of things equipment can capture continuous wave signals, at least one received continuous wave signal is converted into signal energy, and the signal energy can supply power to the back scattering receiving and transmitting device in the internet of things equipment. That is, the internet of things device may use signal energy converted from the received at least one continuous wave signal for backscattering. The internet of things equipment needs to continuously receive different signals in different time periods, and the number of the different signals in different time periods can be the same or different. Because the receiving signal of the Internet of things equipment has a certain failure rate, the method can ensure that the Internet of things equipment receives enough continuous wave signals to be converted into sufficient energy and can also ensure that the Internet of things equipment receives the query signal.

In one possible implementation, for the backscatter transceiver shown in fig. 2b, since the backscatter transceiver does not include a radio frequency energy capture module, the internet of things device including the backscatter transceiver cannot capture energy via a continuous wave signal, but rather provides energy via its own power supply to backscatter the signal. The internet of things device may not receive the continuous wave signal, but rather may receive the interrogation signal, may continuously receive the interrogation signal for the duration of the transmission of the requests, and may cycle nsearch times, i.e., continuously receive the interrogation signal for the duration of the transmission of nsearch requests. By the method, the internet of things equipment can be ensured to receive the inquiry signal.

420. And transmitting device information to the control device through a backscattering technology in response to the inquiry signal, wherein the device information comprises the device identification and the first device state of the Internet of things device.

Specifically, after receiving the interrogation signal, the internet of things device may send device information to the control device through a backscattering technology and signal energy converted from at least one continuous wave signal, where the device information may include a device identifier of the internet of things device and a first device state of the internet of things device, and the first device state may be a state before the internet of things device receives the interrogation signal. The Internet of things equipment can send equipment information to the control equipment by taking continuous waves generated by the Internet of things equipment as carrier waves; the device identifier of the internet of things device may be a special identification code (Unique Identifier, UID), and the device state of the internet of things device may be a working state of the internet of things device, such as on or off.

In a possible implementation manner, for the backscatter transceiver device shown in fig. 2b, since the backscatter transceiver device does not include a radio frequency energy capturing module, the internet of things device including the backscatter transceiver device may acquire signal energy through a power module, and further send device information to the control device through a backscatter technology and the acquired signal energy.

In one possible implementation, the internet of things device may also determine whether to send device information to the control device before the internet of things device sends the device information to the control device via a backscatter technique in response to the interrogation signal. The internet of things device can determine whether to issue and send device information to the control by judging whether the internet of things device has the backscattering authority, and if the internet of things device has the authority, the internet of things device information is sent to the control device. The method is characterized in that multipath reflection can occur in some application scenes with complex environments, different Internet of things devices can use the same frequency when transmitting signals to the control device through a back scattering technology, so that the signals transmitted to the control device by the Internet of things device through the back scattering technology collide, and the success rate of receiving the signals by the control device is reduced.

Optionally, the query signal includes a random number instruction, the internet of things device may generate a first random number and a second random number of the internet of things device according to the random number instruction, and then obtain a difference between the first random number and the second random number, and if the difference is less than 0, determine that the internet of things device has a backscatter authority. Wherein the first random number may be a random integer of 0 to n and the second random number is a random integer greater than 0. And when the difference value obtained by subtracting the second random number from the first random number is smaller than 0, determining that the Internet of things equipment has the backscattering authority. For example, if the first random number is 5 and the second random number is 6, the difference between the first random number and the second random number is-1, and if-1 is smaller than 0, it is determined that the internet of things device has the backscattering authority.

Optionally, the internet of things device may receive a plurality of interrogation signals sent by the control device, and may generate a first random number and a second random number according to a random number instruction in the interrogation signals, where the first random number may be a random integer from 0 to n, and the second random number is a random integer greater than 0. And when receiving an inquiry signal sent by the control equipment, taking the difference value between the first random number and the second random number as the updated first random number. If the latest updated first random number is smaller than 0, determining that the Internet of things equipment has 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 value between the first random number obtained by the latest update and the second random number as the updated first random number until the first random number obtained by the latest update is smaller than 0. That is, when the internet of things device receives an interrogation signal, the first random number may be subtracted by a second random number to obtain an updated first random number; when the internet of things equipment receives the next inquiry signal, subtracting a second random number from the updated first random number, and the like until the first random number is smaller than 0, and determining that the internet of things equipment has the backscattering authority. For example, if the first random number is 10 and the second random number is 3, when the internet of things device receives the first query signal, the updated first random number will become 7; receiving a second interrogation signal, wherein the updated first random number becomes 4; receiving a third interrogation signal, wherein the updated first random number becomes 1; and when the fourth inquiry signal is received, the Internet of things equipment determines that the Internet of things equipment has backscattering permission when the fourth inquiry signal is received, and the updated first random number is changed to-2. By the method, different Internet of things devices have a larger probability of not backscattering the device information through the same frequency in the same time, and the success rate of receiving the device information of the different Internet of things devices by the control device can be increased. It should be noted that, the value of n may be determined according to dimensions such as density, sum of number and the like of the internet of things devices in the current environment of the internet of things devices, and the dimensions may be intelligently adjusted to prevent that the value of the first random number acquired by some of the internet of things devices is too large to have the backscattering authority.

Optionally, the query signal may further indicate a sum of the number of internet of things devices in an environment to which the internet of things device belongs. The internet of things device can acquire the number threshold of the internet of things device according to the sum of the number of the internet of things devices in the environment to which the internet of things device belongs. And if the number of the received inquiry signals reaches the number threshold, determining that the Internet of things equipment has the backscattering authority. The number threshold may be obtained through a user setting by controlling a device, or may be obtained by intelligently determining the current environment by analyzing the current environment by the internet of things device, or may be set by a technician, which is not limited by the embodiment of the present application. For example, the total number of the internet of things devices in the environment to which the internet of things device belongs is 5, and when the threshold value of the number acquired by the internet of things device is 3 and a third query signal is received, it is determined that the internet of things device has the backscattering authority.

430. And receiving a first control signal sent by the control equipment.

After the internet of things device sends device information to the control device, the control device generates a first control signal of the internet of things device. The internet of things 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 internet of things device. The control device may send the control information to the internet of things device by broadcasting the information.

Specifically, as shown in fig. 6, the internet of things device may first receive the continuous wave signal with the transmission duration of Tcw1 sent by the control device, then receive the control signal with the transmission duration of Tcontrol, that is, the first control signal, and further continue to receive the continuous wave signal with the transmission duration of Tcw2 sent by the control device. The first control signal with the transmission duration of Tcontrol indicates that the internet of things device can continuously receive the first control signal within the transmission duration of Tcontrol, and likewise, the first control signal can be one or more; the process of signal reception as shown in fig. 6 may be cycled ncontrol times. That is, the internet of things device may continuously receive the continuous wave signal for a transmission duration of ncontrol Tcw1, continuously receive the first control signal for a transmission duration of ncontrol Tcontrol, and continuously receive the continuous wave signal for a transmission duration of ncontrol Tcw 2. The internet of things device may receive at least one continuous wave signal in a total duration of ncontrol tcws 1 and ncontrol tcws 2. The radio frequency energy capturing module in the internet of things equipment can capture continuous wave signals, at least one received continuous wave signal is converted into signal energy, and the signal energy can supply power to the back scattering receiving and transmitting device in the internet of things equipment. By the method, the fact that the Internet of things equipment receives enough continuous wave signals to be converted into enough energy can be guaranteed, and the fact that the Internet of things equipment receives the first control signal can be guaranteed.

In one possible implementation, for the backscatter transceiver shown in fig. 2b, since the backscatter transceiver does not include a radio frequency energy capture module, the internet of things device including the backscatter transceiver cannot capture energy via a continuous wave signal, but rather provides energy via its own power supply to backscatter the signal. The internet of things device may not receive the continuous wave signal, but rather receive the first control signal, may continuously receive the first control signal for a transmission duration of Tcontrol, and may cycle ncontrol times, i.e., continuously receive the first control signal for a transmission duration of ncontrol tcontrols. By the method, the first control signal can be ensured to be received by the Internet of things equipment.

440. And if the first control signal comprises the equipment identifier of the equipment of the Internet of things, switching from the first equipment state to the second equipment state according to the first control signal.

Because the first control signal can be sent by the control device through broadcasting information, all the internet of things devices which are queried by the control device can receive the first control signal, and if the first control signal comprises the device identifier of the internet of things device, namely the UID, the first control signal of the internet of things device corresponding to the device identifier can be responded. The first control signal may control the internet of things device to switch from the first device state to the second device state. The first control signal may be an operation of reversing 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 an on state, that is, a first device state, and after responding to the first control signal, the internet of things device switches the state to an off state, that is, a second device state.

In one possible implementation manner, for an internet of things device that needs to maintain a state for a long period of time, if the internet of things device does not receive a second control signal for the internet of things device within a preset period of time after the internet of things device is switched from a first device state to a second device state according to the first control signal, the internet of things device is switched from the second device state to the first device state. The second control signal may indicate that the internet of things device is switched from the second device state to the first device state. The internet of things device may start a countdown timer after being switched from the first device state to the second device state according to the first control signal, and if the running duration of the countdown timer reaches a preset time Tcount, the internet of things device is switched from the second device state to the first device state. For example, for the internet of things device 1 in the golf course water spray scene as in fig. 1b, after the internet of things device 1 in fig. 1b receives the first control signal sent by the control device on the golf cart, the on state (water spray state) is switched to the off state (water spray stop state) according to the first control signal, and meanwhile, the countdown timer is started. When the running duration of the countdown timer reaches the preset time Tcount, the Internet of things equipment is switched from the closed state (water spraying stopping state) to the open state (water spraying state). This is because, when the control device on the golf cart approaches the internet of things device 1, the first control signal may be transmitted to the internet of things device 1. When the control device on the golf cart is far away from the internet of things device 1, the second control signal broadcast by the control device cannot be received by the internet of things device 1 due to the far distance, so that the internet of things device 1 is always in a closed state (water spraying stopping state). Therefore, by setting the method for starting the countdown timer, the Internet of things equipment can be timely switched to the original equipment state, namely the first equipment state.

After the first control signal of the internet of things device is successfully responded, the internet of things device also sends confirmation information to the control device through a backscattering technology, wherein the confirmation information comprises the device identification and the second device state of the internet of things device.

In one possible implementation, the internet of things device may also determine whether to send acknowledgement information to the control device before successfully responding to the first control signal of the internet of things device to send acknowledgement information to the control device via a backscatter technique. This determination method is described in detail in embodiment 420 and will not be described here.

According to the embodiment of the application, the Internet of things equipment can respond to the query signal back-scattering equipment information through the energy obtained from at least one continuous wave signal after receiving the query signal and the at least one continuous wave signal sent by the control equipment. And further receiving a first control signal and at least one continuous wave signal sent by the control device, changing the device state of the internet of things device at the moment according to the first control signal, and finally back scattering the confirmation information through the energy acquired from the at least one continuous wave signal. Firstly, the internet of things device can acquire energy from at least one continuous wave signal, so that the power consumption of the internet of things device is reduced. And secondly, the Internet of things equipment adopts a backscattering technology to send information to the control equipment, so that the time delay of information interaction can be reduced. Finally, the backscattering technology adopted by the internet of things equipment can enable distance measurement between the internet of things equipment and the control equipment to be more accurate, and shorter distance can be measured. Therefore, the embodiment of the application can realize the short-distance, rapid and low-power consumption control of the Internet of things equipment through the control equipment.

Referring to fig. 7, fig. 7 is a flowchart of another control method of an internet of things device according to an embodiment of the present application. The execution body of this embodiment may be a control device, and the control device may include a control device hardware architecture as shown in fig. 3. The method may comprise the steps of:

710. and sending an inquiry signal to at least one internet of things device.

Specifically, as shown in fig. 5, the control device may first send a continuous wave signal with a transmission duration of Tcw1 to at least one internet of things device, and then send an interrogation signal with a transmission duration of Trequest, and further continue to send a continuous wave signal with a transmission duration of Tcw 2. The transmission process may be cycled nsearch times. The nsearch may be set by a user or a developer, or may be intelligently determined by the control device according to the current application scenario environment, which is not limited by the embodiment of the present application. The intelligently determined nsearch control device may ensure that at least one internet of things device receives the interrogation signal and enough continuous wave signal to capture enough signal energy.

720. At least one piece of equipment information sent by at least one piece of internet of things equipment through a backscattering technology in response to the query signal is received, wherein the at least one piece of equipment information comprises an equipment identifier of each piece of internet of things equipment in the at least one piece of internet of things equipment and a first equipment state of each piece of internet of things equipment.

After the control device receives at least one piece of equipment information sent by at least one piece of internet of things equipment through a backscattering technology in response to the query signal, the at least one piece of equipment information can be subjected to information arrangement. Specifically, the control device may obtain, from at least one device information, a device identifier, i.e., UID, and a device state, i.e., on or off, of the internet of things device corresponding to each device information. The control device can also calculate received signal Indication strength (RECEIVED SIGNAL STRENGTH Indication, RSSI), phase (Phase) and reception time corresponding to different UIDs through the radio frequency front end as shown in fig. 3. The control device can generate a table from the information, and records the RSSI, the phase, the time and the device state of the Internet of things device corresponding to each UID. For example, as shown in table 1, the RSSI of the internet of things device with UID AA001 is-58, the phase is 1.89, the reception time is 12.23.23.798, and the state is off. The control device may count all the information of the internet of things devices detected in the current environment into the table.

TABLE 1

730. And generating a first control signal according to the at least one piece of equipment information, wherein the first control signal comprises equipment identifiers of at least one piece of equipment of the Internet of things, and the first control signal is used for indicating that the equipment corresponding to each equipment identifier is switched from a first equipment state of each piece of equipment of the Internet of things to a second equipment state of each piece of equipment of the Internet of things.

The control device can determine at least one internet of things device needing to change the state by analyzing the RSSI, phase and receiving time information corresponding to each UID in table 1. For example, as shown in table 1, the control device determines that AA001 and AA003 need to be switched to an on state, and AA002 needs to be switched to an off state, and may generate a first control signal according to at least one device information, and control at least one internet of things device through the first control signal. The control device may determine the corresponding first control signal according to at least one device information in the table 1: { on } { UID [ AA001, AA003] } { off } { UID [ AA002] }.

740. And sending a first control signal to at least one Internet of things device.

The control device may send a first control signal to 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 internet of things device, and then send a first control signal with a transmission duration of Tcontrol, so as to further continue to send a continuous wave signal with a transmission duration of Tcw 2. The transmission process may be cycled ncontrol times. The ncontrol may be set by a user or a developer, 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 by the embodiment of the present application. The intelligently determined ncontrol control device may ensure that the at least one internet of things device receives the first control signal and enough continuous wave signals to capture enough signal energy.

750. And receiving at least one piece of confirmation information sent by at least one piece of internet of things equipment, wherein each piece of confirmation information in the at least one piece of confirmation information comprises an equipment identifier and a second equipment state of the corresponding piece of internet of things equipment.

The control device may update a table previously obtained from the at least one device information based on the received at least one confirmation information. For example, if the control device knows from at least one acknowledgement 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 may be updated to obtain table 2 as follows:

TABLE 2

According to the embodiment of the application, the control equipment can send the query signal and the at least one continuous wave signal to at least one Internet of things equipment, and the at least one continuous wave signal can provide signal energy for the at least one Internet of things equipment, so that the Internet of things equipment can send at least one piece of equipment information to the control equipment through a backscattering technology and the signal energy. The control device may generate a first control signal according to the at least one device information, where the first control signal may change a device state of an internet of things device in the at least one internet of things device that needs to change a device state. The control device may receive at least one confirmation message sent by the internet of things device, so as to update the saved device state of each internet of things device. Because the transmitter included in the control device provides signal gain during periods when the transmitter does not contain an amplifier class, the control device has a short communication distance with the internet of things device, and can communicate within a range of less than 10 meters. Therefore, the position information of the Internet of things equipment is hidden in the signal backscattered by the Internet of things equipment, and the control equipment can accurately control the Internet of things equipment in a smaller range.

Referring to fig. 8, fig. 8 is a flowchart illustrating a control method of an internet of things device according to an embodiment of the present application. The execution main body of the embodiment comprises a control device and at least one internet of things device. In practical application, the number of the internet of things devices may be more than 3, and in the embodiment of the application, 3 internet of things devices, namely, the internet of things device 1, the internet of things device 2 and the internet of things device 3 are taken as an example. The control method of the internet of things equipment can comprise the following steps:

810. the control device sends an interrogation signal to the at least one internet of things device.

820. The at least one internet of things device sends at least one device information to the control device via a backscatter technique.

830. The control device generates a first control signal based on the at least one device information.

840. The control device sends a first control signal to at least one internet of things device.

850. If each of the at least one internet of things device detects that the first control signal includes the device identifier of the internet of things device, the first device state is switched to the second device state according to the first control signal.

860. At least one internet of things device sends at least one acknowledgement message to the control device via a backscatter technique.

Through the embodiment of the application, the control equipment and the Internet of things equipment perform signal interaction through the backscattering technology, and the advantages of low power consumption, low time delay and accurate distance measurement of the backscattering technology can be inherited, so that the control equipment can control the Internet of things equipment in a short distance, quickly and with low power consumption.

Referring to fig. 9, fig. 9 is a schematic diagram of a unit of a communication device according to an embodiment of the application. The control device of the internet of things device shown in fig. 9 may be used to perform some or all of the functions of the method embodiments described in the foregoing fig. 4, 7 and 8. The device can be an Internet of things device or a control device, can be a device in the Internet of things device or the control device, or can be a device matched with the Internet of things device or the control device for use. The logic structure of the device may include: a transceiver unit 910 and a processing unit 920. When the device is applied to the internet of things equipment:

A transceiver 910, configured to receive an interrogation signal sent by the control device;

The transceiver 910 is further configured to send, in response to the query signal, device information to the control device through a backscatter technology, where the device information includes a device identifier of the internet of things device and a first device state;

The transceiver 910 is further configured to receive a 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 in response to the first control signal if the first control signal includes a device identifier of the internet of things device.

In one possible implementation, the transceiver unit 910 is further configured to receive at least one continuous wave signal sent by the control device before sending device information to the control device through a backscatter technology in response to an interrogation signal; and acquiring signal energy through at least one continuous wave signal, wherein the signal energy is used for supplying power to the equipment of the Internet of things.

In a possible implementation manner, if the first control signal includes a device identifier of the internet of things device, after the first control signal is switched from the first device state to the second device state according to the first control signal, the transceiver 910 is further configured to send acknowledgement information to the control device, where the acknowledgement information includes the device identifier of the internet of things device and the second device state.

In a possible implementation manner, the transceiver unit 910 is further configured to receive at least one continuous wave signal sent by the control device before sending acknowledgement information to the control device; the processing unit 920 is further configured to obtain signal energy through at least one continuous wave signal, where the signal energy is used to power the internet of things device.

In one possible implementation manner, if the first control signal includes a device identifier of the internet of things device, after the first control signal is switched from the first device state to the second device state according to the first control signal, if the second control signal for the internet of things device is not received within a preset period of time after the first control signal is switched from the first device state to the second device state, the transceiver 910 is further configured to switch from the second device state to the first device state.

In one possible implementation, the interrogation signal also includes a random number instruction.

In one possible implementation, the processing unit 920 is further configured to generate a first random number and a second random number according to a random number instruction before transmitting the device information to the control device through a backscatter technique in response to the interrogation signal; obtaining a difference value between the first random number and the second random number; if the difference is smaller than 0, it is determined that the transceiver 910 is further configured to send device information to the control device.

In one possible implementation, before transmitting the device information to the control device through the backscatter technology in response to the interrogation signal, the transceiver 910 is further configured to receive a plurality of interrogation signals transmitted by the control device; the processing unit 920 is further configured to generate a first random number and a second random number; when an inquiry signal sent by the control equipment is received, taking the difference value between the first random number and the second random number as the updated first random number; 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 equipment is received, taking the difference value between the first random number obtained by the latest update and the second random number as the updated first random number until the first random number obtained by the latest update is smaller than 0; if the first random number updated recently is less than 0, it is determined that the transceiver 910 is further configured to send device information to the control device.

In one possible implementation, the interrogation signal is further used to indicate a sum of the number of internet of things devices in the environment to which the internet of things device belongs.

In one possible implementation, before transmitting the device information to the control device through the backscatter technology in response to the interrogation signal, the transceiver 910 is further configured to receive a plurality of interrogation signals transmitted by the control device; the processing unit 920 is further configured to obtain a number threshold of the internet of things device according to a sum of numbers of the internet of things devices in an environment where the internet of things device belongs; if the number of received interrogation signals reaches a number threshold, it is determined to transmit device information to the control device.

When the apparatus is applied to a control device:

a transceiver unit 910 that transmits an interrogation signal to at least one internet of things device;

The transceiver 910 is further configured to receive at least one device information sent by at least one internet of things device through a backscatter technology, where the at least one device information includes a device identifier of each internet of things device in the at least one internet of things device and a first device state of each internet of things device;

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 internet of things device, and the first control signal is configured to instruct each device identifier to switch the internet of things device corresponding to the device identifier from a first device state of each internet of things device to a second device state of each internet of things device;

the transceiver 910 is further configured to send a first control signal to at least one internet of things device;

The transceiver 910 is further configured to receive at least one acknowledgement message sent by at least one internet of things device, where each acknowledgement message in the at least one acknowledgement message includes a device identifier and a second device state of the internet of things device corresponding to each acknowledgement message.

In one possible implementation manner, the transceiver unit 910 is further configured to send at least one continuous wave signal to at least one internet of things device before receiving at least one device information sent by the at least one internet of things device through a backscatter technology, where the at least one continuous wave signal is used to provide signal energy.

In one possible implementation, the transceiver unit 910 is further configured to send at least one continuous wave signal to the at least one internet of things device before receiving the at least one acknowledgement message sent by the at least one internet of things device, where the at least one continuous wave signal is used to provide signal energy.

Referring to fig. 10, fig. 10 is a simplified schematic diagram of a physical structure of a communication device according to an embodiment of the application, where the device includes a processor 1010, a memory 1020, and a communication interface 1030, and the processor 1010, the memory 1020, and the communication interface 1030 are connected by one or more communication buses.

The processor 1010 is configured to support the communication device to perform the functions corresponding to the methods of fig. 2, 5 and 8. The processor 1010 may be a central processor (central processing unit, CPU), a network processor (network processor, NP), a hardware chip, or any combination thereof.

The memory 1020 is used for storing program codes and the like. Memory 1020 may include volatile memory (volatile memory), such as random access memory (random access memory, RAM); the memory 1020 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a hard disk (HARD DISK DRIVE, HDD) or a solid state disk (solid-state disk (SSD-STATE DRIVE); memory 1020 may also include a combination of the above types of memory.

The communication interface 1030 is used to transmit and receive data, information or messages, etc., and may also be described as a transceiver, transceiver circuitry, etc.

In an embodiment of the present application, when the control apparatus of the internet of things device is applied to the internet of things device, the processor 1010 may call the program code stored in the memory 1020 to perform the following operations:

the control communication interface 1030 receives interrogation signals sent by the control device;

The control communication interface 1030 transmits device information to the control device via a backscatter technique in response to the interrogation signal, the device information including a device identification and a first device status of the internet of things device;

the control communication interface 1030 receives a first control signal sent by a control device;

The processor 1010 invokes the program code stored in the memory 1020 to switch from the first device state to the second device state in response to the first control signal if the first control signal includes a device identification of the internet of things device.

In one possible implementation, the control communication interface 1030 receives at least one continuous wave signal transmitted by the control device before transmitting device information to the control device via backscatter technology in response to an interrogation signal; and acquiring signal energy through at least one continuous wave signal, wherein the signal energy is used for supplying power to the equipment of the Internet of things.

In one possible implementation, if the first control signal includes a device identifier of the internet of things device, after the first control signal is switched from the first device state to the second device state according to the first control signal, the control communication interface 1030 sends acknowledgement information to the control device, where the acknowledgement information includes the device identifier of the internet of things device and the second device state.

In one possible implementation, the control communication interface 1030 receives at least one continuous wave signal sent by the control device before sending an acknowledgement to the control device; processor 1010 invokes program code stored in memory 1020 to obtain signal energy via at least one continuous wave signal, which is used to power the internet of things device.

In one possible implementation manner, if the first control signal includes the device identifier of the internet of things device, after the first control signal is switched from the first device state to the second device state according to the first control signal, if the second control signal for the internet of things device is not received within a preset time period after the first control signal is switched from the first device state to the second device state, the control communication interface 1030 is switched from the second device state to the first device state.

In one possible implementation, the processor 1010 invokes program code stored in the memory 1020 to generate a first random number and a second random number from the random number instructions before transmitting device information to the control device via a backscatter technique in response to an interrogation signal; obtaining a difference value between the first random number and the second random number; if the difference is less than 0, it is determined that the control communication interface 1030 transmits device information to the control device.

In one possible implementation, the control communication interface 1030 receives a plurality of interrogation signals transmitted by the control device before transmitting device information to the control device via backscatter technology in response to the interrogation signals; the processor 1010 calls the program code stored in the memory 1020 to generate a first random number and a second random number; when an inquiry signal sent by the control equipment is received, taking the difference value between the first random number and the second random number as the updated first random number; 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 equipment is received, taking the difference value between the first random number obtained by the latest update and the second random number as the updated first random number until the first random number obtained by the latest update is smaller than 0; if the most recently updated first random number is less than 0, it is determined that the control communication interface 1030 transmits device information to the control device.

In one possible implementation, the control communication interface 1030 receives a plurality of interrogation signals transmitted by the control device before transmitting device information to the control device via backscatter technology in response to the interrogation signals; the processor 1010 calls the program code stored in the memory 1020 to acquire the number threshold of the internet of things devices according to the sum of the number of the internet of things devices in the environment to which the internet of things devices belong; if the number of received interrogation signals reaches a number threshold, it is determined to transmit device information to the control device.

In an embodiment of the present application, when the apparatus is applied to a control device, the processor 1010 may call program code stored in the memory 1020 to:

The control communication interface 1030 transmits an interrogation signal to at least one internet of things device;

The control communication interface 1030 receives at least one device information sent by at least one internet of things device through a backscatter technology, where the at least one device information includes a device identifier of each internet of things device and a first device state of each internet of things device in the at least one internet of things device;

the processor 1010 invokes the program code stored in the memory 1020 to generate a first control signal according to the at least one device information, where the first control signal includes a device identifier of the at least one internet of things device, and the first control signal is used to instruct each device identifier to switch the corresponding internet of things device from a first device state of each internet of things device to a second device state of each internet of things device;

The control communication interface 1030 transmits a first control signal to at least one internet of things device;

The control communication interface 1030 receives at least one acknowledgement message sent by at least one internet of things device, where each acknowledgement message in the at least one acknowledgement message includes a device identifier and a second device status of the respective acknowledgement message corresponding to the internet of things device.

In one possible implementation, the control communication interface 1030 transmits at least one continuous wave signal to the at least one internet of things device for providing signal energy before receiving the at least one device information transmitted by the at least one internet of things device via the backscatter technology.

In one possible implementation, the control communication interface 1030 transmits at least one continuous wave signal to the at least one internet of things device for providing signal energy before receiving the at least one acknowledgement message transmitted by the at least one internet of things device.

In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.

The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.

The units in the processing device of the embodiment of the invention can be combined, divided and deleted according to actual needs.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). Computer readable storage media can be any available media that can be accessed by a computer or data storage devices, such as servers, data centers, etc., that contain an integration of one or more available media. Usable media may be magnetic media (e.g., floppy disks, storage disks, magnetic tape), optical media (e.g., DVD), or semiconductor media (e.g., solid state storage disk Solid STATE DISK (SSD)), etc.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims

1. The control method of the Internet of things equipment is characterized by being applied to the Internet of things equipment, and comprises the following steps:

Receiving an inquiry signal sent by control equipment, wherein the inquiry signal comprises a random number instruction;

generating a first random number and a second random number according to the random number instruction;

acquiring a difference value between the first random number and the second random number;

if the difference value is smaller than 0, determining to send equipment information to the control equipment;

transmitting the equipment information to the control equipment through a backscattering technology in response to the inquiry signal, wherein the equipment information comprises the equipment identification and the first equipment state of the Internet of things equipment;

receiving a first control signal sent by the control equipment;

2. The method of claim 1, wherein before said transmitting device information to said control device via backscatter technology in response to said interrogation signal, further comprises:

Receiving at least one continuous wave signal sent by the control equipment;

And acquiring signal energy through the at least one continuous wave signal, wherein the signal energy is used for supplying power to the Internet of things equipment.

3. The method of claim 1, wherein if the first control signal includes a device identifier of the internet of things device, after switching from the first device state to the second device state according to the first control signal, the method further comprises:

and sending confirmation information to the control equipment, wherein the confirmation information comprises the equipment identifier of the Internet of things equipment and the second equipment state.

4. A method according to claim 3, wherein before said sending of acknowledgement information to the control device, the method further comprises:

Receiving at least one continuous wave signal sent by the control equipment;

5. The method of claim 1, wherein if the first control signal includes a device identifier of the internet of things device, after switching from the first device state to the second device state according to the first control signal, the method further comprises:

and if the second control signal for the Internet of things equipment is not received within the preset time period after the first control signal is switched from the first equipment state to the second equipment state, switching from the second equipment state to the first equipment state.

6. The method of claim 1, wherein prior to transmitting device information to the control device via backscatter technology in response to the interrogation signal, the method further comprises:

Receiving a plurality of inquiry signals sent by the control equipment;

Generating the first random number and the second random number;

when receiving an inquiry signal sent by the control device, taking the difference value between the first random number and the second random number as an updated first random number;

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 value between the first random number obtained by the latest update and the second random number as the first random number after the latest update until the first random number obtained by the latest update is less than 0;

And if the first random number obtained by the latest update is smaller than 0, determining to send the equipment information to the control equipment.

7. The method of claim 1, wherein the interrogation signal is further used to indicate a sum of the number of internet of things devices in the environment to which the internet of things device belongs;

Before said transmitting device information to said control device via backscatter technology in response to said interrogation signal, said method further comprises:

Receiving a plurality of inquiry signals sent by the control equipment;

Acquiring a quantity threshold of the Internet of things equipment according to the quantity sum of the Internet of things equipment in the environment of the Internet of things equipment;

and if the number of the received inquiry signals reaches the number threshold, determining to send the device information to the control device.

8. A control method of an internet of things device, which is applied to a control device, the method comprising:

Transmitting an inquiry signal to at least one internet of things device, wherein the inquiry signal comprises a random number instruction, the at least one internet of things device is used for generating a first random number and a second random number according to the random number instruction, acquiring a difference value between the first random number and the second random number, and determining to transmit at least one device information to the control device if the difference value is smaller than 0;

Receiving the at least one piece of equipment information sent by the at least one piece of internet of things equipment through a backscattering technology, wherein the at least one piece of equipment information comprises an equipment identifier of each piece of internet of things equipment in the at least one piece of internet of things equipment and a first equipment state of each piece of internet of things equipment;

Generating a first control signal according to the at least one piece of equipment information, wherein the first control signal comprises equipment identifiers of the at least one piece of equipment, and the first control signal is used for indicating that the equipment corresponding to each piece of equipment identifier is switched from a first equipment state of each piece of equipment to a second equipment state of each piece of equipment;

sending a first control signal to the at least one internet of things device;

and receiving at least one piece of confirmation information sent by the at least one piece of internet of things equipment, wherein each piece of confirmation information in the at least one piece of confirmation information comprises an equipment identifier and a second equipment state of the corresponding piece of internet of things equipment.

9. The method of claim 8, wherein prior to receiving the at least one device information sent by the at least one internet of things device via the backscatter technique, the method further comprises:

And transmitting at least one continuous wave signal to the at least one internet of things device, wherein the at least one continuous wave signal is used for providing signal energy.

10. The method of claim 8, wherein prior to receiving the at least one acknowledgement sent by the at least one internet of things device, the method further comprises:

11. A communication apparatus comprising a processor, a memory and a user interface, the processor, the memory and the user interface being interconnected, wherein the memory is configured to store a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the method of controlling the internet of things device of any of claims 1 to 7 or the method of controlling the internet of things device of any of claims 8 to 10.

12. A computer-readable storage medium storing one or more instructions adapted to be loaded by a processor and to perform the method of controlling an internet of things device according to any one of claims 1 to 7 or the method of controlling an internet of things device according to any one of claims 8 to 10.