WO2021203354A1

WO2021203354A1 - Electronic tag and data reading device

Info

Publication number: WO2021203354A1
Application number: PCT/CN2020/083924
Authority: WO
Inventors: 邵帅
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2021-10-14
Also published as: CN115315706A

Abstract

An electronic tag (100) and a data reading device (120). The electronic tag (100) comprises an energy collection module (111) and a Bluetooth module (112). The energy collection module (111) is configured to convert energy of a radio-frequency signal sent by the data reading device (120) into electric energy, the electric energy supplying power to the Bluetooth module (112); and the Bluetooth module (112) is in Bluetooth communication with the data reading device (120). Compared with the existing electronic tag, the electronic tag (100) is powered by the data reading device (120) via the radio-frequency signal when the electronic tag (100) reads data. Since the data reading device (120) is carried by a user, the charging convenience is much higher than the electronic tag (100), so that the situation of the loss of function of the electronic tag (100) due to the exhaustion of power can be avoided, and the electronic tag (100) can be used for a long time.

Description

Electronic tags and data reading equipment

Technical field

This application relates to the field of information technology, in particular to an electronic tag and a data reading device.

Background technique

The electronic tag tracking system is a system that combines radio communication to track and locate electronic tags. An electronic tag tracking system usually includes an electronic tag to be tracked and a data reading device for the electronic tag. The data reading device is responsible for direct wireless communication with the electronic tag to obtain the information of the electronic tag, such as the identification number of the tag. The data reading device has independent calculation and storage functions, can obtain and store the information of the electronic tag, and calculate the position of the electronic tag. The electronic tag tracking system is mainly used for item tracking. The electronic tag can be placed on the tracked item, and the data reading device is used to locate the location of the electronic tag to complete the item tracking.

In the prior art, the transmission of information between the electronic tag and the data reading device is mainly based on Bluetooth technology. Among them, the electronic tag is provided with a battery and a Bluetooth module, and the battery supplies power to the Bluetooth module, so that the Bluetooth module periodically sends a Bluetooth signal carrying the information of the electronic tag. The data reading device is also correspondingly provided with a Bluetooth module, which is used to receive the Bluetooth signal sent by the electronic tag, thereby completing the data reading.

However, due to the limited capacity of the battery in the electronic tag, the electronic tag may lose its function due to the exhaustion of the power, which makes the electronic tag unable to be used for a long time.

Summary of the invention

The embodiments of the present application provide an electronic tag and a data reading device to solve the problem that the electronic tag cannot be used for a long time in the prior art.

The first aspect of this application provides an electronic tag, including: an energy harvesting module and a Bluetooth module;

The energy harvesting module is used to convert the energy of the radio frequency signal sent by the data reading device into electrical energy, and the electrical energy is used to power the Bluetooth module;

The Bluetooth module is used to perform Bluetooth communication with the data reading device.

In an optional implementation manner, it further includes: a transceiver antenna;

The transceiver antenna is used to transmit the received radio frequency signal sent by the data reading device to the energy harvesting module; or, send the received Bluetooth signal sent by the Bluetooth module to the data reading equipment.

In an optional implementation manner, the transceiver antenna is a single antenna with a Bluetooth communication frequency band and a radio frequency communication frequency band; the electronic tag further includes: an antenna switch connected to the transceiver antenna;

The antenna switch is used to switch the transceiving antenna to be connected to the energy harvesting module, or switch the transceiving antenna to be connected to the Bluetooth module.

In an optional implementation manner, it further includes: a processor;

The processor is configured to control the antenna switch to switch the transceiving antenna to be connected to the energy harvesting module, or control the antenna switch to switch the transceiving antenna to be connected to the Bluetooth module.

In an optional implementation manner, the processor is specifically configured to:

Before the Bluetooth module performs Bluetooth communication with the data reading device, controlling the antenna switch to switch the transceiver antenna to be connected to the energy harvesting module;

and,

After the electrical energy stored by the energy harvesting module exceeds the first electrical energy threshold, the energy harvesting module is controlled to provide electrical energy to the Bluetooth module, and the antenna switcher is controlled to switch the transceiver antenna to be connected to the Bluetooth module .

In an optional implementation manner, the processor is further configured to:

When the electric energy stored by the energy harvesting module is lower than the second electric energy threshold, the antenna switcher is controlled to switch the transceiver antenna to be connected to the energy harvesting module.

In an optional implementation manner, the processor is a processor in a Bluetooth module.

In an optional embodiment, the energy harvesting module includes: an energy conversion component and an energy temporary storage component;

The energy conversion component is connected to the energy temporary storage component, and the energy temporary storage component is connected to the Bluetooth module;

The energy conversion component is used to convert the energy of the radio frequency signal into electrical energy;

The energy temporary storage component is used to store the electrical energy.

In an optional embodiment, the energy temporary storage component includes a battery or a capacitor.

In an optional implementation manner, it further includes: a combiner and a radio frequency antenna;

The combiner is respectively connected to the transceiver antenna, the radio frequency antenna and the energy harvesting module;

The combiner is used to mix the radio frequency signals collected by the radio frequency antenna and the transceiver antenna and send them to the energy harvesting module.

In an optional implementation manner, it further includes: a power module connected to the Bluetooth module;

The power supply module is used to provide power to the Bluetooth module.

The second aspect of the present application provides a data reading device, including: a wireless transmitter and a Bluetooth module;

The wireless transmitter is used to send a radio frequency signal to the electronic tag, and the radio frequency signal is used to power the electronic tag;

The Bluetooth module is used for Bluetooth communication with the electronic tag.

In an optional implementation manner, it further includes: a processor;

The processor is configured to control the wireless transmitter to send a radio frequency signal to the electronic tag after receiving a data reading instruction; and, after the time for the radio transmitter to send the radio frequency signal exceeds a time threshold, control the station The Bluetooth module receives the Bluetooth signal sent by the electronic tag.

In an optional implementation manner, it further includes: a radio frequency antenna and a Bluetooth antenna;

The radio frequency antenna is connected to the wireless transmitter, and the Bluetooth antenna is connected to the Bluetooth module;

The radio frequency antenna is used to transmit the received radio frequency signal sent by the wireless transmitter to the electronic tag;

The Bluetooth antenna is used to send the received Bluetooth signal sent by the electronic tag to the Bluetooth module.

The transmitting and receiving antenna is a single antenna with a Bluetooth communication frequency band and a radio frequency communication frequency band;

The transceiver antenna is used to send the received radio frequency signal sent by the wireless transmitter to the electronic tag; or send the received Bluetooth signal sent by the electronic tag to the Bluetooth module.

In an optional implementation manner, it further includes: a directional coupler;

The directional coupler is respectively connected with the transceiver antenna, the wireless transmitter and the Bluetooth module;

The directional coupler is configured to send the radio frequency signal in the uplink direction received by the transceiver antenna to the electronic tag, or send the Bluetooth signal in the downlink direction received by the transceiver antenna to the Bluetooth module.

In an optional implementation manner, it further includes: a duplexer;

The duplexer is respectively connected with the transceiver antenna, the wireless transmitter and the Bluetooth module;

The duplexer is configured to send the received radio frequency signal of the radio frequency communication frequency band to the electronic tag, or send the received Bluetooth signal of the Bluetooth communication frequency band to the Bluetooth module.

In an optional implementation manner, it further includes: an antenna switch; the antenna switch is connected to the transceiver antenna;

The antenna switch is used to switch the transceiving antenna to be connected to the wireless transmitter, or switch the transceiving antenna to be connected to the Bluetooth module.

In an optional implementation manner, the processor is further configured to control the antenna switch to switch the transceiver antenna to be connected to the wireless transmitter after receiving the data reading instruction, or After the time for the wireless transmitter to send the radio frequency signal exceeds the time threshold, the antenna switcher is controlled to switch the transceiver antenna to be connected to the Bluetooth module.

A third aspect of the present application provides a method for reading an electronic tag, which is applied to a data reading device, and the method includes:

Sending a radio frequency signal to the electronic tag, where the radio frequency signal is used to power the electronic tag;

Perform Bluetooth communication with the energized electronic tag.

The fourth aspect of the present application provides an electronic tag reading method, which is applied to an electronic tag, and the method includes:

Receiving a radio frequency signal sent by a data reading device, where the radio frequency signal is used to power the electronic tag;

Perform Bluetooth communication with the data reading device after power is supplied.

A fifth aspect of the present application provides a data reading device, and the data reading device includes:

The radio frequency module is used to send a radio frequency signal to the electronic tag, and the radio frequency signal is used to power the electronic tag;

The communication module is used for Bluetooth communication with the powered electronic tag.

A sixth aspect of the present application provides an electronic tag, and the electronic tag includes:

The radio frequency collection module is used to receive the radio frequency signal sent by the data reading device, and the radio frequency signal is used to power the electronic tag;

The communication module is used to perform Bluetooth communication with the data reading device after energy is supplied.

A seventh aspect of the present invention provides a computer-readable storage medium for storing a computer program that enables a computer to execute the method for reading an electronic tag provided by the implementation of the third aspect.

An eighth aspect of the present invention provides a computer-readable storage medium for storing a computer program that enables a computer to execute the method for reading an electronic tag as provided in the embodiment of the fourth aspect.

The present application provides an electronic tag and a data reading device. The electronic tag includes an energy harvesting module and a Bluetooth module; the energy harvesting module is used to convert the energy of the radio frequency signal sent by the data reading device into electrical energy, and the converted electrical energy Provided to the Bluetooth module; the Bluetooth module is used for Bluetooth communication with the data reading device. Compared with the existing electronic tag, the electronic tag provided in this application can be powered by the data reading device through the radio frequency signal when the data is read. . Since the data reading device is carried by the user, its charging convenience is much higher than that of the electronic tag, so that the loss of function of the electronic tag due to the exhaustion of power can be avoided, so that the electronic tag can be used for a long time.

Description of the drawings

FIG. 1 is a schematic diagram of a scenario in which an electronic tag is used according to an embodiment of the application;

Figure 2 is a schematic diagram of an existing electronic tag and data reading device;

FIG. 3 is a schematic structural diagram of an electronic tag provided by an embodiment of the application;

4 is a schematic structural diagram of another electronic tag provided by an embodiment of the application;

FIG. 5 is a schematic diagram of a data structure of a Bluetooth signal provided by an embodiment of the application;

FIG. 6 is a schematic structural diagram of still another electronic tag provided by an embodiment of the application;

FIG. 7 is a schematic structural diagram of yet another electronic tag provided by an embodiment of the application;

FIG. 8 is a schematic structural diagram of a data reading device provided by an embodiment of the application;

FIG. 9 is a schematic structural diagram of another data reading device provided by an embodiment of the application;

FIG. 10 is a schematic structural diagram of yet another data reading device provided by an embodiment of this application;

FIG. 11 is a schematic structural diagram of yet another data reading device provided by an embodiment of this application;

FIG. 12 is a schematic structural diagram of yet another data reading device provided by an embodiment of this application;

FIG. 13 is a schematic diagram of switching time of an antenna switch provided by an embodiment of the application;

14 is a schematic diagram of interaction of an electronic tag reading method provided by an embodiment of the application;

15 is a schematic flowchart of an electronic tag reading method provided by an embodiment of this application;

FIG. 16 is a schematic flowchart of another method for reading an electronic tag according to an embodiment of the application;

FIG. 17 is a schematic structural diagram of yet another data reading device provided by an embodiment of this application;

FIG. 18 is a schematic structural diagram of another electronic tag provided by an embodiment of the application.

Reference signs:

100-electronic label;

110-The item being tracked;

120-Data reading equipment;

111-Energy harvesting module;

112-Bluetooth module;

113-Transceiving antenna;

114-antenna switcher;

1121-processor;

1122-Bluetooth modem;

1123-Bluetooth transceiver;

1111- Energy conversion components;

1112-energy temporary storage components;

115 combiner;

116-RF antenna;

117-energy module;

121-Wireless transmitter;

122-Bluetooth module;

123-processor;

124-RF antenna;

125-Bluetooth antenna;

126-Transceiving antenna;

127-directional coupler;

128-duplexer;

129-Antenna switcher.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the present invention. Invented a part of the embodiments, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

First, the usage scenarios of this application are explained. Electronic tags are mainly used for item tracking. FIG. 1 is a schematic diagram of a scenario of using an electronic tag according to an embodiment of the application. As shown in FIG. 1, the electronic tag 100 can be placed on the tracked item 110, and the electronic tag 100 can store the identification of the electronic tag 100 and the electronic tag 100. Information such as the location of the logo. During the transfer process of the tracked item 110, the data reading device 120 may perform wireless communication with the electronic tag 100 to obtain the information of the electronic tag, so as to complete the tracking of the tracked item 110.

Among them, the data reading device 120 has independent calculation and storage functions, and can acquire and store electronic tag information. Exemplarily, the data reading device 120 may be referred to as a terminal, user equipment (UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), etc., and may also be a mobile phone (mobile phone). ), tablet computers (pad), computers with wireless transceiver functions, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, wireless terminals in industrial control (industrial control), unmanned Wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in smart homes, etc.

In the prior art, the transmission of information between the electronic tag and the data reading device is mainly based on Bluetooth technology. Figure 2 is a schematic diagram of an existing electronic tag and data reading device. As shown in Figure 2, the electronic tag is provided with a battery and a Bluetooth module. The battery supplies power to the Bluetooth module, so that the Bluetooth module periodically sends and carries Bluetooth signal with electronic tag information. The data reading device is also correspondingly provided with a Bluetooth module, which is used to receive the Bluetooth signal sent by the electronic tag, thereby completing the data reading.

At present, the consumer-level electronic tag widely used in the market is the electronic tag based on Bluetooth technology in Figure 2 above. During the use of the electronic tag, the user cannot fully judge the remaining battery power. If the electronic tag has been used for a period of time, but the battery is not replaced in time, the electronic tag may lose its function due to the rapid exhaustion of the battery in the electronic tag. Although electronic label manufacturers can set battery replacement reminders, they still cannot guarantee that users will follow them, nor can they guarantee long-term tracking. Therefore, due to the limited capacity of the battery in the electronic tag, the electronic tag cannot be used for a long time.

In order to solve the above problems, the embodiments of the present application provide an electronic tag and a data reading device, so that the electronic tag can be used for a long time. The inventive concept of the present application is that the data reading device sends energy to the electronic tag by sending a radio frequency signal, and the electronic tag converts the energy of the radio frequency signal sent by the data reading device into electric energy to perform Bluetooth communication with the data reading device. Before the data reading device communicates with the electronic tag each time, it sends a radio frequency signal to supply energy to the electronic tag, so that the service life of the electronic tag no longer depends on the internal battery, thus realizing the long-term use of the electronic tag.

FIG. 3 is a schematic structural diagram of an electronic tag provided by an embodiment of the application. As shown in FIG. 3, the electronic tag 100 provided by an embodiment of the application includes an energy harvesting module 111 and a Bluetooth module 112.

Wherein, the energy harvesting module 111 is configured to convert the energy of the radio frequency signal sent by the data reading device 120 into electrical energy, and the electrical energy is used to power the Bluetooth module 112;

The Bluetooth module 112 is used to perform Bluetooth communication with the data reading device 120.

In the embodiment of the present application, the electronic tag 100 loses power when in the non-communication state, and the Bluetooth module 112 in the electronic tag 100 cannot perform Bluetooth communication. When communication is required, the data reading device 120 first sends a radio frequency signal, and then the energy harvesting module 111 in the electronic tag 100 converts the energy of the radio frequency signal into electrical energy, and provides the converted electrical energy to the Bluetooth module 112, thereby After the Bluetooth module 112 is powered on, it performs Bluetooth communication with the data reading device 120.

In some embodiments, the electronic tag 100 further includes a transceiver antenna 113. The transceiver antenna 113 is used to transmit the received radio frequency signal sent by the data reading device 120 to the energy harvesting module 111; or, to send the received Bluetooth signal sent by the Bluetooth module 112 to the data读设备120。 Reading equipment 120. .

The energy harvesting module 111 and the Bluetooth module 112 included in the electronic tag 100 provided by the embodiments of the present application both need to transmit and receive signals. In some embodiments, the energy harvesting module 111 and the Bluetooth module 112 may each be provided with an antenna to separately perform signals. In other embodiments, the energy harvesting module 111 and the Bluetooth module 112 can share a transceiver antenna 113 for signal transmission and reception. The shared transceiver antenna 113 has both a Bluetooth communication frequency band and a radio frequency communication frequency band. Among them, the Bluetooth frequency band in the embodiment of the present application may be 2.4-2.5 GHz, and the radio frequency communication frequency band may be specifically set according to actual conditions.

In the electronic tag 100 shown in FIG. 3, the energy harvesting module 111 and the Bluetooth module 112 share a transceiving antenna 113 to transmit and receive signals. Specifically, the transceiver antenna 113 in the electronic tag 100 has a single antenna of the Bluetooth communication frequency band and the radio frequency communication frequency band. Accordingly, the electronic tag 100 further includes an antenna switch 114 connected to the transceiver antenna 113. The antenna switch 114 is used to switch the transceiver antenna 113 to be connected to the energy harvesting module 111, or switch the transceiver antenna 113 to be connected to the Bluetooth module 112, so that the antenna switch 114 completes a single transceiver antenna 113 to the energy harvesting module Free choice of 111 and Bluetooth module 112.

In the embodiment of the present application, the energy harvesting module 111 of the electronic tag 100 and the Bluetooth module 112 share a transceiver antenna 113 to transmit and receive signals, thereby reducing the volume of the electronic tag 100 and making the electronic tag 100 more convenient to be installed in On the tracked item.

The following describes how to control the antenna switch 114 to switch the transceiver antenna 113 to connect with the Bluetooth module 112 or switch to connect with the energy harvesting module 111.

In some embodiments, the electronic tag 100 further includes a processor 1121. The processor 1121 is configured to control the antenna switch 114 to switch the transceiver antenna 113 to connect to the energy harvesting module 111, or to control the antenna switch 114 to switch the transceiver antenna 113 to connect to the Bluetooth module 112.

Among them, the embodiment of the present application does not limit the above-mentioned processor 1121. In some embodiments, the above-mentioned processor 1121 may be an additional processor 1121; in other embodiments, the processor 1121 is a part of the Bluetooth module 112. The processor 1121. Compared with the additional processor, since the processor 1121 in the Bluetooth module 112 controls the sending and receiving of Bluetooth signals during the communication process between the electronic tag 100 and the data reading device 120, the Bluetooth signal is also controlled by the Bluetooth module 112. The processor 1121 controls the switching of the antenna switch 114, which can not only save the cost of the electronic tag 100, but also timely and accurately coordinate the transmission and reception time of the Bluetooth signal to ensure that the Bluetooth signal can be sent to the data reading device 120 normally.

In addition, the embodiment of the present application does not limit the control strategy of the line switch. An achievable control strategy is provided below. Before the Bluetooth module 112 performs Bluetooth communication with the data reading device 120, the processor 1121 controls the antenna switch 114 to switch the transceiver antenna 113 to be connected to the energy harvesting module 111. Moreover, after the energy stored in the energy harvesting module 111 exceeds the first power threshold, the processor 1121 controls the energy harvesting module 111 to provide power to the Bluetooth module 112 and controls the antenna switch 114 to switch the transceiver antenna 113 to connect to the Bluetooth module 112.

In the embodiment of the present application, before performing Bluetooth communication, the processor 1121 controls the antenna switch 114 to switch the transceiver antenna 113 to be connected to the energy harvesting module 111, so as to ensure that the energy harvesting module 111 in the electronic tag 100 can transmit radio frequency signals. The energy is converted into electrical energy for power supply. After the energy stored in the energy harvesting module 111 exceeds the first power threshold, the processor 1121 controls the energy harvesting module 111 to provide power to the Bluetooth module 112, and controls the antenna switch 114 to switch the transceiver antenna 113 to connect to the Bluetooth module 112, thereby ensuring The Bluetooth module 112 in the electronic tag 100 can be sent to the data reading device 120 normally. Through the above control strategy, it is realized that one transceiver antenna 113 is time-division and frequency-division to meet the signal transceiver requirements of the energy harvesting module 111 and the Bluetooth module 112.

In addition, in some embodiments, the processor 1121 is further configured to control the antenna switch 114 to switch the transceiver antenna 113 to be connected to the energy harvesting module 111 when the electrical energy stored by the energy harvesting module 111 is lower than the second electrical energy threshold. The energy harvesting module 111 continues to convert the energy of the radio frequency signal into electrical energy. In this way, before the energy in the energy harvesting module 111 is exhausted, the antenna switch 114 is used to switch the transceiver antenna 113 to connect to the energy harvesting module 111, so that the next time the data reading device 120 sends a radio frequency signal, the energy harvesting The module 111 can directly obtain the radio frequency signal through the transceiver antenna 113.

FIG. 4 is a schematic structural diagram of another electronic tag provided by an embodiment of the application. In FIG. 4, the energy harvesting module 111 and the Bluetooth module 112 are specifically described. As shown in FIG. 4, the energy harvesting module 111 includes: an energy conversion component 1111 and an energy temporary storage component 1112;

The energy conversion component 1111 is connected to the energy temporary storage component 1112, and the energy temporary storage component 1112 is connected to the Bluetooth module 112; the energy conversion component 1111 is used to convert the energy of the radio frequency signal into electrical energy; the energy temporary storage component 1112 is used to store electrical energy.

Among them, the energy conversion component 1111 may specifically be an energy conversion circuit. When the transceiver antenna 113 receives the radio frequency signal sent by the data reading device 120, the energy of the radio frequency signal causes a potential difference over the entire length of the antenna and generates a charge current. The movement of the antenna 113 is transmitted and received. After the charge carriers move to the energy conversion circuit, the energy conversion circuit converts the charge carriers into direct current.

The aforementioned energy temporary storage component 1112 can temporarily store the electrical energy obtained by the energy conversion component 1111 quasi-transformed. When the stored electrical energy exceeds the electrical energy threshold that the energy temporary storage component 1112 can hold, the electrical energy can be released to the Bluetooth module 112. Exemplarily, the energy temporary storage component 1112 may be a battery or a capacitor.

As shown in FIG. 4, the Bluetooth module 112 includes a processor 1121, a Bluetooth modem 1122, and a Bluetooth transceiver 1123;

The Bluetooth modem 1122 is respectively connected with the Bluetooth transceiver 1123 and the processor 1121, and the processor 1121 is connected with the energy temporary storage component 1112;

The processor 1121 is used to wake up the Bluetooth modem and the Bluetooth transceiver after receiving the power released by the energy temporary storage device, and control the Bluetooth modem to modulate the Bluetooth signal; the Bluetooth transceiver is used to send the Bluetooth signal to the data reading device 120 through the transceiver line.

Among them, the aforementioned Bluetooth signal can use Bluetooth low energy (bluetooth low energy, BLE) technology, and the electronic tag transmits a broadcast signal (Advertising) based on BLE technology without actively connecting with the data reading device, which is more convenient for data reading. Take device discovery.

Exemplarily, FIG. 5 is a schematic diagram of the data structure of a Bluetooth signal provided by an embodiment of the application. As shown in FIG. 5, the Bluetooth signal of the electronic tag 100 may include a necessary 8-bit (bit) preamble, 32-bit access Address (access address), 24bit cyclic redundancy check (CRC), and 16-312bit data payload (protocol data uni, PDU). Among them, the PDU may contain data stored in the electronic tag 100.

Fig. 6 is a schematic structural diagram of still another electronic tag provided by an embodiment of the application. Based on the above embodiment, an additional radio frequency antenna is added to Fig. 6 to receive radio frequency signals in multiple frequency bands. As shown in FIG. 6, the electronic tag 100 further includes: a combiner 115 and a radio frequency antenna 116;

The combiner 115 is respectively connected to the transceiver antenna 113, the radio frequency antenna 116 and the energy harvesting module 111.

The combiner 115 is used to mix the radio frequency signals collected by the radio frequency antenna 116 and the transceiver antenna 113 and send them to the energy harvesting module 111.

In this embodiment, the transceiver antenna 113 is used not only for Bluetooth communication but also for receiving radio frequency signals, and the radio frequency antenna 116 is only used for receiving radio frequency signals. The duplexer 128 mixes the radio frequency signals of multiple frequency bands received by the transceiver antenna 113 and the radio frequency antenna 116 and sends them to the energy harvesting module 111, thereby converting the energy of the radio frequency signal into electrical energy.

Wherein, the radio frequency antenna 116 may be a single antenna, or may be multiple antennas, may be a broadband antenna, or may be a multi-frequency antenna.

In the electronic tag 100 provided by the embodiments of the present application, one or more radio frequency antennas 116 are additionally added to the electronic tag 100, so that the electronic tag 100 can receive radio frequency signals of different frequency bands, which not only increases the energy conversion efficiency, but also targets different transmissions. The data reading device 120 of the frequency band and the electronic tag 100 can complete Bluetooth communication after being powered.

FIG. 7 is a schematic structural diagram of another electronic tag provided by an embodiment of the application. On the basis of the foregoing embodiment, an additional power supply module is added in FIG. 7. As shown in FIG. 7, the electronic tag 100 further includes: a power module 117 connected to the Bluetooth module 112;

The power supply module 117 is used to provide power to the Bluetooth module 112.

In the electronic tag 100 provided in this embodiment, in the normal working mode, the power supply module 117 supplies power to the Bluetooth module 112, so as to realize the Bluetooth communication between the Bluetooth module 112 and the data reading device 120. When the electric energy in the power module 117 is lower than the first threshold, the processor 1121 can control the electronic tag 100 to enter the radio frequency working mode, and the energy harvesting module 111 will convert the energy of the radio frequency signal sent by the data reading device 120 into electric energy, and After the converted electric energy is provided to the Bluetooth module 112, the Bluetooth module 112 performs Bluetooth communication with the data reading device 120. In addition, if the user replaces the power module, if the server detects that the power in the power module exceeds the second threshold, the electronic tag 100 can also be switched to the normal working mode, and the power module 117 continues to supply power to the Bluetooth module 112.

In the electronic tag 100 provided by the embodiment of the present application, the power supply module 117 and the energy harvesting module 111 are provided on the electronic tag 100 at the same time. When insufficient, the energy harvesting module 111 collects radio frequency signals to supply power to the Bluetooth module 112, so that the electronic tag 100 device can be used for a long time.

FIG. 8 is a schematic structural diagram of a data reading device provided by an embodiment of the application. As shown in FIG. 8, the data reading device 120 provided by the embodiment of the application includes a wireless transmitter 121 and a Bluetooth module 122;

The wireless transmitter 121 is used to send a radio frequency signal to the electronic tag 100, and the radio frequency signal is used to power the electronic tag 100;

The Bluetooth module 122 is used for Bluetooth communication with the electronic tag 100.

In the embodiment of the present application, when the data reading device 120 needs to read data, the wireless transmitter 121 now sends a radio frequency signal to the electronic tag 100 to power the electronic tag 100. After the electronic tag 100 is powered on, the Bluetooth module 122 in the data reading device 120 and the electronic tag 100 perform Bluetooth communication.

In order to control the timing of sending radio frequency signals and performing Bluetooth communication, the data reading device 120 may further include a processor 123.

The processor 123 is configured to control the wireless transmitter 121 to send a radio frequency signal to the electronic tag 100 after receiving the data reading instruction; and, after the time for the radio transmitter 121 to transmit the radio frequency signal exceeds the time threshold, control the Bluetooth module 122 to receive the electronic The Bluetooth signal sent by the tag 100.

Since the wireless transmitter 121 and the Bluetooth module 122 included in the data reading device 120 both need to communicate with the electronic tag 100, a variety of different methods can be used to complete the transmission and reception of Bluetooth signals and radio frequency signals. Several possible implementation methods are described below.

FIG. 9 is a schematic structural diagram of another data reading device provided by an embodiment of the application. Based on the foregoing embodiment, as shown in FIG. 9, the data reading device 120 further includes: a radio frequency antenna 124 and a Bluetooth antenna 125;

The radio frequency antenna 124 is connected to the wireless transmitter 121, and the Bluetooth antenna 125 is connected to the Bluetooth module 122;

The radio frequency antenna 124 is used to transmit the received radio frequency signal sent by the wireless transmitter 121 to the electronic tag 100;

The Bluetooth antenna 125 is used to send the received Bluetooth signal sent by the electronic tag 100 to the Bluetooth module 122.

In the data reading device 120 provided by the embodiment of the present application, a dedicated radio frequency antenna 124 is set for the wireless transmitter 121 to transmit radio frequency signals, and a dedicated Bluetooth antenna 125 is set for the Bluetooth module 122 for Bluetooth communication, so that the wireless transmitter 121 and the Bluetooth module 122 can work at the same time. The structure of the above-mentioned data reading device 120 is more flexible, and at the same time, the interference of the wireless transmitter 121 to the Bluetooth module 122 is avoided.

FIG. 10 is a schematic structural diagram of another data reading device provided by an embodiment of this application. Based on the above embodiment, as shown in FIG. 10, the data reading device 120 further includes: a transceiver antenna 126 and a directional coupler 127 .

The directional coupler 127 is respectively connected with the transceiver antenna 126, the wireless transmitter 121 and the Bluetooth module 122.

The transceiver antenna 126 is a single antenna with a Bluetooth communication frequency band and a radio frequency communication frequency band, and is used to transmit the received radio frequency signal sent by the wireless transmitter 121 to the electronic tag 100; or, to transmit the received electronic tag The Bluetooth signal sent by 100 is sent to the Bluetooth module 122.

The directional coupler 127 is configured to send the radio frequency signal in the uplink direction received by the transceiver antenna 126 to the electronic tag 100, or send the Bluetooth signal in the downlink direction received by the transceiver antenna 126 to the Bluetooth module 122.

The data reading device 120 provided by the embodiment of the present application supports simultaneous transmission and reception of Bluetooth signals and radio frequency signals at the same frequency and the same antenna, and the wireless transmitter 121 and the Bluetooth module 122 can work in the same frequency band. In order to reduce the interference of the wireless transmitter 121 to the Bluetooth module 122, the hardware can use a directional coupler 127 to distinguish it by the direction of the signal. In addition, the wireless transmission frequency needs to avoid the Bluetooth signal channel (channel 37, 38, 39).

FIG. 11 is a schematic structural diagram of another data reading device provided by an embodiment of the application. Based on the above embodiment, as shown in FIG. 11, the data reading device 120 further includes: a transceiver antenna 126 and a duplexer 128 .

The duplexer 128 is connected to the transceiver antenna 126, the wireless transmitter 121, and the Bluetooth module 122, respectively.

The duplexer 128 is configured to send the received radio frequency signal in the radio frequency communication frequency band to the electronic tag 100, or send the received Bluetooth signal in the Bluetooth communication frequency band to the Bluetooth module 122.

The data reading device 120 provided in the embodiment of the present application distinguishes signals by frequency bands of the signals, thereby supporting simultaneous frequency division and antenna transmission and reception of Bluetooth signals and radio frequency signals. The wireless transmitter 121 and the Bluetooth module 122 can work in different frequency bands.

FIG. 12 is a schematic structural diagram of another data reading device provided by an embodiment of the application. Based on the above embodiment, as shown in FIG. 12, the data reading device 120 further includes: a transceiver antenna 126 and an antenna switch 129 .

The antenna switch 129 is used to switch the transceiver antenna 126 to be connected to the wireless transmitter 121, or switch the transceiver antenna 126 to be connected to the Bluetooth module 122.

The processor 123 is further configured to control the antenna switch 129 to switch the transceiver antenna 126 to be connected to the wireless transmitter 121 after receiving the data reading instruction, or, after the wireless transmitter 121 transmits the radio frequency signal for a time exceeding the time threshold, The antenna switch 129 is controlled to switch the transceiver antenna 126 to be connected to the Bluetooth module 122.

FIG. 13 is a schematic diagram of switching time of an antenna switch provided by an embodiment of the application. As shown in Figure 13, tTX is the working period of the wireless transmitter, tRX is the working period of the Bluetooth module, and tG is the intermittent period. Based on the working period of the wireless transmitter 121 and the Bluetooth module 122, the antenna switch 129 alternately switches the transceiver antenna 126 to Connect with the wireless transmitter 121, or switch the transceiver antenna 126 to connect with the Bluetooth module 122.

The data reading device provided by the embodiment of the present application controls the antenna switcher according to the preset time interval to switch the transmitting and receiving antenna to be connected to the wireless transmitter 121, or switch the transmitting and receiving antenna to be connected to the Bluetooth module, thereby supporting time sharing The same frequency and the same antenna transmit and receive Bluetooth signals and radio frequency signals. At the same time, only one of the wireless transmitter 121 and the Bluetooth module is connected to the transceiver antenna.

FIG. 14 is a schematic diagram of interaction of an electronic tag reading method provided by an embodiment of the application. This embodiment relates to the process of how a data reading device reads data from an electronic tag. As shown in FIG. 14, the electronic tag reading The methods include:

S201. The data reading device sends a radio frequency signal to the electronic tag.

In some embodiments, the data reading device can send radio frequency signals to the electronic tag in real time at a preset time interval. In other embodiments, the data reading device will receive the data reading instruction input by the user and read according to the data. Take instructions and send radio frequency signals to the electronic tag.

S202. The electronic tag uses a radio frequency signal to supply energy for the electronic tag.

The process of using the radio frequency signal to power the electronic tag in this embodiment is the same as that in the foregoing embodiment, and will not be repeated here.

S203. The electronic tag performs Bluetooth communication with the data reading device after energy is supplied.

Among them, the electronic tag can send a Bluetooth signal to the data reading device after the stored electrical energy exceeds the electrical energy threshold. The data reading device can receive the Bluetooth signal sent by the electronic tag after the time for sending the radio frequency signal exceeds the time threshold.

In the method for reading an electronic tag provided by the embodiment of the application, the data reading device sends a radio frequency signal to the electronic tag, and then the electronic tag uses the radio frequency signal to power the electronic tag. Finally, the electronic tag communicates with the data read Take the device for Bluetooth communication. Since the data reading device is carried by the user, its charging convenience is much higher than that of the electronic tag. The power supply of the electronic tag by the data reading device can avoid the loss of function of the electronic tag due to the exhaustion of power, so that the electronic tag can be used for a long time .

15 is a schematic flowchart of an electronic tag reading method provided by an embodiment of the application. The execution subject of this embodiment is a data reading device or a processor in the data reading device, and the data reading device includes a transceiver antenna, Antenna switcher, wireless transmitter and Bluetooth module. This embodiment relates to the process of how the data reading device controls the transmitting and receiving antenna to switch. As shown in Figure 15, the electronic tag reading method includes:

S211: Control the antenna switcher to switch the transceiver antenna to be connected to the wireless transmitter.

S212. Send a radio frequency signal to the electronic tag, and the radio frequency signal is used to power the electronic tag.

S213: After the time for the wireless transmitter to send the radio frequency signal exceeds the time threshold, control the antenna switcher to switch the transceiver antenna to be connected to the Bluetooth module.

S214: Perform Bluetooth communication with the powered electronic tag.

16 is a schematic flow chart of another electronic tag reading method provided by an embodiment of this application. The execution subject of this embodiment is the electronic tag or the processor in the electronic tag. The electronic tag includes a Bluetooth receiving module, an energy harvesting module, Transceiving antenna and antenna switch. This embodiment relates to how the electronic tag controls the process of switching the transceiver antenna, as shown in Figure 16. The reading method of the electronic tag includes:

S221: Control the antenna switcher to switch the transceiver antenna to be connected to the energy harvesting module, where the energy harvesting module is used to convert the energy of the radio frequency signal sent by the data reading device into electrical energy;

S222: Receive a radio frequency signal sent by the data reading device, where the radio frequency signal is used to power the electronic tag;

S223. After the stored electric energy of the energy harvesting module exceeds the first electric energy threshold, control the energy harvesting module to provide electric energy to the Bluetooth module, and control the antenna switch to switch the transceiver antenna to be connected to the Bluetooth module.

S224: Send a Bluetooth signal to the data reading device.

S225: After the electric energy stored by the energy harvesting module is lower than the second threshold, control the antenna switch to switch the transceiver antenna to be connected to the energy harvesting module.

A person of ordinary skill in the art can understand that all or part of the steps in the above method embodiments can be implemented by hardware related to program information, and the foregoing program can be stored in a computer readable storage medium, and when the program is executed, it executes Including the steps of the foregoing method embodiment; and the foregoing storage medium includes: ROM, RAM, magnetic disk, or optical disk and other media that can store program codes.

FIG. 17 is a schematic structural diagram of another data reading device provided by an embodiment of this application. The data reading device can be implemented by software, hardware or a combination of the two to execute the above-mentioned electronic tag reading method. As shown in FIG. 17, the data reading device 230 includes: a radio frequency module 231, a communication module 232, and a control module 233.

The radio frequency module 231 is used to send a radio frequency signal to the electronic tag, and the radio frequency signal is used to power the electronic tag;

The communication module 232 is used for Bluetooth communication with the powered electronic tag.

In an optional implementation manner, the radio frequency module is specifically configured to receive a data reading instruction input by a user; according to the data reading instruction, a radio frequency signal is sent to the electronic tag.

In an optional implementation manner, the communication module 232 is specifically configured to receive the Bluetooth signal sent by the electronic tag after the time for sending the radio frequency signal exceeds the time threshold.

In an optional implementation manner, the data reading device includes an antenna switch, a transceiver antenna, a Bluetooth module, and a wireless transmitter 121, and the data reading device further includes:

The control module 233 is used to control the antenna switcher to switch the transceiver antenna to be connected to the wireless transmitter 121; after the wireless transmitter 121 sends radio frequency signals for a time exceeding the time threshold, control the antenna switcher to switch the transceiver antenna to be connected to the Bluetooth module .

FIG. 18 is a schematic structural diagram of another electronic tag provided by an embodiment of the application. The electronic tag can be implemented by software, hardware or a combination of the two to implement the above-mentioned electronic tag reading method. As shown in FIG. 18, the electronic tag 240 includes: a radio frequency collection module 241, a communication module 242, and a control module 243.

The radio frequency collection module 241 is used to receive the radio frequency signal sent by the data reading device, and the radio frequency signal is used to power the electronic tag;

The communication module 242 is used to perform Bluetooth communication with the data reading device after energy is supplied.

In an optional implementation manner, the communication module is specifically configured to send a Bluetooth signal to the data reading device after the stored electrical energy exceeds the first electrical energy threshold.

In an optional implementation manner, the electronic tag includes a Bluetooth module, an energy harvesting module, a transceiver antenna and an antenna switch, and the electronic tag further includes:

The control module 243 is used to control the antenna switcher to switch the transceiver antenna to be connected to the energy harvesting module. The energy harvesting module is used to convert the energy of the radio frequency signal sent by the data reading device into electrical energy; the electrical energy stored in the energy harvesting module exceeds the first After a power threshold, the energy harvesting module is controlled to provide power to the Bluetooth module, and the antenna switch is controlled to switch the transceiver antenna to be connected to the Bluetooth module.

In an optional implementation manner, the control module 243 is further configured to control the antenna switcher to switch the transceiver antenna to be connected to the energy harvesting module after the electrical energy stored by the energy harvesting module is lower than the second electrical energy threshold.

The embodiment of the present application also provides a chip including a processor and an interface. The interface is used to input and output data or instructions processed by the processor. The processor is used to execute the method provided in the above method embodiment. The chip can be used in data reading equipment or electronic tags.

The present invention also provides a computer-readable storage medium. The computer-readable storage medium may include: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), and a random access memory (RAM, Random Access Memory). ), magnetic disks or optical disks and other media that can store program codes. Specifically, the computer-readable storage medium stores program information, and the program information is used in the above-mentioned electronic tag reading method.

The embodiment of the present application also provides a program, which is used to execute the electronic tag reading method provided in the above method embodiment when the program is executed by the processor.

The embodiment of the present application also provides a program product, such as a computer-readable storage medium, in which instructions are stored in the program product. When the program product runs on a computer, the computer executes the electronic tag reading method provided in the above method embodiment.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present invention are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. Computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be transmitted from a website, a computer, a server, or a data center through a wired ( For example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to transmit to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. Scope.

Claims

An electronic tag, which is characterized by comprising: an energy harvesting module and a Bluetooth module;

The energy harvesting module is used to convert the energy of the radio frequency signal sent by the data reading device into electrical energy, and the electrical energy is used to power the Bluetooth module;

The Bluetooth module is used to perform Bluetooth communication with the data reading device.
The electronic tag according to claim 1, further comprising: a transceiver antenna;

The transceiver antenna is used to transmit the received radio frequency signal sent by the data reading device to the energy harvesting module; or, send the received Bluetooth signal sent by the Bluetooth module to the data reading equipment.
The electronic tag according to claim 2, wherein the transceiver antenna is a single antenna with a Bluetooth communication frequency band and a radio frequency communication frequency band; the electronic tag further comprises: an antenna switch connected to the transceiver antenna;

The antenna switch is used to switch the transceiving antenna to be connected to the energy harvesting module, or switch the transceiving antenna to be connected to the Bluetooth module.
The electronic tag according to claim 3, further comprising: a processor;

The processor is configured to control the antenna switch to switch the transceiving antenna to be connected to the energy harvesting module, or control the antenna switch to switch the transceiving antenna to be connected to the Bluetooth module.
The electronic tag according to claim 4, wherein the processor is specifically configured to:

Before the Bluetooth module performs Bluetooth communication with the data reading device, controlling the antenna switch to switch the transceiver antenna to be connected to the energy harvesting module;

and,

After the electrical energy stored by the energy harvesting module exceeds the first electrical energy threshold, the energy harvesting module is controlled to provide electrical energy to the Bluetooth module, and the antenna switcher is controlled to switch the transceiver antenna to be connected to the Bluetooth module .
The electronic tag according to claim 5, wherein the processor is further configured to:

When the electric energy stored by the energy harvesting module is lower than the second electric energy threshold, the antenna switcher is controlled to switch the transceiver antenna to be connected to the energy harvesting module.
The electronic tag according to any one of claims 4-6, wherein the processor is a processor in a Bluetooth module.
The electronic tag according to any one of claims 1-7, wherein the energy harvesting module comprises: an energy conversion component and an energy temporary storage component;

The energy conversion component is connected to the energy temporary storage component, and the energy temporary storage component is connected to the Bluetooth module;

The energy conversion component is used to convert the energy of the radio frequency signal into electrical energy;

The energy temporary storage component is used to store the electrical energy.
8. The electronic tag according to claim 8, wherein the energy temporary storage component comprises a battery or a capacitor.
The electronic tag according to any one of claims 2-7, further comprising: a combiner and a radio frequency antenna;

The combiner is respectively connected to the transceiver antenna, the radio frequency antenna and the energy harvesting module;

The combiner is used to mix the radio frequency signals collected by the radio frequency antenna and the transceiver antenna and send them to the energy harvesting module.
The electronic tag according to any one of claims 1-10, further comprising: a power module connected to the Bluetooth module;

The power supply module is used to provide power to the Bluetooth module.
A data reading device is characterized by comprising: a wireless transmitter and a Bluetooth module;

The wireless transmitter is used to send a radio frequency signal to the electronic tag, and the radio frequency signal is used to power the electronic tag;

The Bluetooth module is used for Bluetooth communication with the electronic tag.
The data reading device according to claim 12, further comprising: a processor;

The processor is configured to control the wireless transmitter to send a radio frequency signal to the electronic tag after receiving a data reading instruction; and, after the time for the radio transmitter to send the radio frequency signal exceeds a time threshold, control the station The Bluetooth module receives the Bluetooth signal sent by the electronic tag.
The data reading device according to claim 13, further comprising: a radio frequency antenna and a Bluetooth antenna;

The radio frequency antenna is connected to the wireless transmitter, and the Bluetooth antenna is connected to the Bluetooth module;

The radio frequency antenna is used to transmit the received radio frequency signal sent by the wireless transmitter to the electronic tag;

The Bluetooth antenna is used to send the received Bluetooth signal sent by the electronic tag to the Bluetooth module.
The data reading device according to claim 13, further comprising: a transceiver antenna;

The transmitting and receiving antenna is a single antenna with a Bluetooth communication frequency band and a radio frequency communication frequency band;

The transceiver antenna is used to send the received radio frequency signal sent by the wireless transmitter to the electronic tag; or send the received Bluetooth signal sent by the electronic tag to the Bluetooth module.
The data reading device according to claim 15, further comprising: a directional coupler;

The directional coupler is respectively connected with the transceiver antenna, the wireless transmitter and the Bluetooth module;

The directional coupler is configured to send the radio frequency signal in the uplink direction received by the transceiver antenna to the electronic tag, or send the Bluetooth signal in the downlink direction received by the transceiver antenna to the Bluetooth module.
The data reading device according to claim 15, further comprising: a duplexer;

The duplexer is respectively connected with the transceiver antenna, the wireless transmitter and the Bluetooth module;

The duplexer is configured to send the received radio frequency signal of the radio frequency communication frequency band to the electronic tag, or send the received Bluetooth signal of the Bluetooth communication frequency band to the Bluetooth module.
The data reading device according to claim 15, further comprising: an antenna switch; the antenna switch is connected to the transceiver antenna;

The antenna switch is used to switch the transceiving antenna to be connected to the wireless transmitter, or switch the transceiving antenna to be connected to the Bluetooth module.
The data reading device according to claim 18, wherein the processor is further configured to control the antenna switch to switch the transceiver antenna to communicate with the wireless transmitter after receiving a data reading instruction. Or, after the time for the wireless transmitter to send the radio frequency signal exceeds a time threshold, the antenna switcher is controlled to switch the transceiver antenna to be connected to the Bluetooth module.
An electronic tag reading method applied to a data reading device, characterized in that the method includes:

Sending a radio frequency signal to the electronic tag, where the radio frequency signal is used to power the electronic tag;

Perform Bluetooth communication with the energized electronic tag.
The method for reading an electronic tag according to claim 20, wherein the sending a radio frequency signal to the electronic tag comprises:

Receive data reading instructions entered by the user;

According to the data reading instruction, a radio frequency signal is sent to the electronic tag.
The method for reading an electronic tag according to claim 20 or 21, wherein the Bluetooth communication with the energized electronic tag includes:

After the time for sending the radio frequency signal exceeds the time threshold, the Bluetooth signal sent by the electronic tag is received.
The method according to any one of claims 20-22, wherein the data reading device comprises an antenna switch, a transceiver antenna, a Bluetooth module, and a wireless transmitter;

Before the sending a radio frequency signal to the electronic tag, the method further includes:

Controlling the antenna switch to switch the transceiver antenna to be connected to the wireless transmitter;

Before the Bluetooth communication with the powered electronic tag, the method further includes:

After the time for the wireless transmitter to send the radio frequency signal exceeds the time threshold, the antenna switcher is controlled to switch the transceiver antenna to be connected to the Bluetooth module.
An electronic tag reading method, applied to an electronic tag, characterized in that the method includes:

Receiving a radio frequency signal sent by a data reading device, where the radio frequency signal is used to power the electronic tag;

Perform Bluetooth communication with the data reading device after power is supplied.
The method for reading an electronic tag according to claim 24, wherein the performing Bluetooth communication with the data reading device after power supply comprises:

After the stored electrical energy exceeds the first electrical energy threshold, a Bluetooth signal is sent to the data reading device.
The method for reading an electronic tag according to claim 24 or 25, wherein the electronic tag includes a Bluetooth module, an energy harvesting module, a transceiver antenna, and an antenna switch, and it is characterized in that the received data is read Before the radio frequency signal sent by the device, the method further includes:

Controlling the antenna switch to switch the transceiver antenna to be connected to the energy harvesting module, the energy harvesting module being used to convert the energy of the radio frequency signal sent by the data reading device into electrical energy;

After the electrical energy stored by the energy harvesting module exceeds the first electrical energy threshold, the energy harvesting module is controlled to provide electrical energy to the Bluetooth module, and the antenna switcher is controlled to switch the transceiver antenna to be connected to the Bluetooth module .
The method for reading an electronic tag according to claim 26, wherein the method further comprises:

After the electrical energy stored by the energy harvesting module is lower than the second electrical energy threshold, the antenna switcher is controlled to switch the transceiver antenna to be connected to the energy harvesting module.
A data reading device, characterized in that the data reading device includes:

The radio frequency module is used to send a radio frequency signal to the electronic tag, and the radio frequency signal is used to power the electronic tag;

The communication module is used for Bluetooth communication with the powered electronic tag.
The data reading device according to claim 28, wherein the radio frequency module is specifically configured to receive a data read instruction input by a user; and send a radio frequency signal to the electronic tag according to the data read instruction.
The data reading device according to claim 28 or 29, wherein the communication module is specifically configured to receive the Bluetooth signal sent by the electronic tag after the time for sending the radio frequency signal exceeds a time threshold.
The data reading device according to any one of claims 28-30, wherein the data reading device comprises an antenna switch, a transceiver antenna, a Bluetooth module and a wireless transmitter, and the data reading device, Also includes:

The control module is used to control the antenna switcher to switch the transceiver antenna to be connected to the wireless transmitter; after the time for the wireless transmitter to send radio frequency signals exceeds the time threshold, control the antenna switcher to switch The transceiver antenna is switched to be connected to the Bluetooth module.
An electronic tag, characterized in that, the electronic tag includes:

The radio frequency collection module is used to receive the radio frequency signal sent by the data reading device, and the radio frequency signal is used to power the electronic tag;

The communication module is used to perform Bluetooth communication with the data reading device after energy is supplied.
The electronic tag according to claim 32, wherein the communication module is specifically configured to send a Bluetooth signal to the data reading device after the stored electric energy exceeds a first electric energy threshold.
The electronic tag according to claim 32 or 33, wherein the electronic tag comprises a Bluetooth module, an energy harvesting module, a transceiver antenna and an antenna switch, and the electronic tag further comprises:

The control module is used to control the antenna switch to switch the transceiver antenna to be connected to the energy harvesting module, and the energy harvesting module is used to convert the energy of the radio frequency signal sent by the data reading device into electrical energy; After the electrical energy stored by the energy harvesting module exceeds the first electrical energy threshold, the energy harvesting module is controlled to provide electrical energy to the Bluetooth module, and the antenna switcher is controlled to switch the transceiver antenna to be connected to the Bluetooth module.
The electronic tag according to claim 34, wherein the control module is further configured to control the antenna switch to switch the transmitting and receiving antenna after the energy stored by the energy harvesting module is lower than a second electrical energy threshold. To connect with the energy harvesting module.