Electronic tag, electronic tag working method and electronic tag device

Abstract

The invention discloses an electronic tag. The electronic tag comprises an input module, an output module and an output module, wherein the input module is electrically connected with a down link, an up link and an up link; the input module is electrically connected with the antenna and is used for sending a first signal to a downlink, sending a second signal to an uplink and sending a third signal sent by the uplink to the antenna; the downlink is connected with the processing module, and a first amplification unit of the downlink is used for receiving and amplifying the first signal; the downlink is used for generating a demodulation signal according to the first signal and sending the demodulation signal to the processing module; the processing module is connected with the uplink and is used for receiving the demodulation signal, generating a modulation signal and sending the modulation signal to the uplink; a second amplification unit of the uplink is used for receiving and amplifying the second signal to generate a first carrier signal; the uplink generates a third signal from the first carrier signal and the modulated signal. According to the electronic tag, the requirement for the lowest receiving sensitivity of a reader-writer when the electronic tag is read is lowered, and therefore the read-write distance of the electronic tag is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic information identification, and in particular to an electronic tag, an electronic tag working method and an electronic tag device. Background Art

[0002] At present, there are high requirements for automatic information identification technology in footwear and clothing retail, logistics warehousing, intelligent parking systems, production line management optimization, anti-counterfeiting detection mechanisms, refined asset management, and efficient supply chain management systems. In existing designs, electronic tags are mostly used to implement the Internet of Things and automatic identification.

[0003] However, the existing technology has high requirements for the identification distance and the reader-writer equipment during identification of electronic tags. In the application scenarios of electronic tags, such as large-scale warehouse asset management, where long-distance reading capability is required, or in complex environments with significant electromagnetic shielding effects such as inside power cabinets, the existing electronic tags have a low reading and writing distance and a low recognition success rate during reading and writing. Summary of the invention

[0004] The present invention provides an electronic tag, an electronic tag working method and an electronic tag device, which can reduce the requirement of the minimum receiving sensitivity of a reader / writer when reading the electronic tag, thereby improving the reading and writing distance of the electronic tag.

[0005] According to a first aspect of the present invention, there is provided an electronic tag, comprising: an input module, a downlink, a processing module and an uplink;

[0006] The input module is electrically connected to the first end of the downlink, the first end of the uplink, and the second end of the uplink; the input module is electrically connected to the antenna, and is used to send the first signal sent by the antenna to the first end of the downlink, send the second signal sent by the antenna to the first end of the uplink, and send the third signal sent by the second end of the uplink to the antenna;

[0007] The downlink is connected to the first end of the processing module, and the downlink includes a first amplifying unit, and the first amplifying unit is used to receive and amplify the first signal; the downlink is used to generate a demodulated signal according to the first signal and send it to the processing module;

[0008] The processing module is connected to the third end of the uplink, and the processing module is used to generate a modulated signal after receiving the demodulated signal and send it to the uplink;

[0009] The uplink includes a second amplifying unit, which is used to receive and amplify the second signal to generate a first carrier signal; the uplink is also used to generate the third signal according to the first carrier signal and the modulation signal.

[0010] Optionally, the input module includes a coupler, a first resistor, a filter and a multi-way selection switch;

[0011] The first end of the coupler is used to be electrically connected to the antenna, the second end of the coupler is connected to the first end of the filter, the second end of the filter is connected to the control end of the multi-way selection switch, the first end of the multi-way selection switch is electrically connected to the first end of the downlink, the third end of the coupler is connected to the first end of the uplink, the second end of the multi-way selection switch is electrically connected to the second end of the uplink, and the fourth end of the coupler is connected in series with the first resistor and grounded.

[0012] Optionally, the downlink includes: an envelope detection unit, a first amplification unit and a comparison unit;

[0013] The first end of the envelope detection unit is connected to the input module, the second end of the envelope detection unit is connected to the first end of the first amplification unit, the second end of the first amplification unit is connected to the first end of the comparison unit, and the second end of the comparison unit is connected to the first end of the processing module;

[0014] The first amplifying unit includes an intermediate frequency amplifying circuit, which is used to amplify the first signal;

[0015] The downlink is used to amplify and demodulate the first signal to generate a demodulated signal and send it to the processing module.

[0016] Optionally, the amplification gain of the intermediate frequency amplifier circuit is greater than or equal to 10db.

[0017] Optionally, the uplink includes: a second amplification unit and a modulation unit;

[0018] The second amplification unit includes a radio frequency amplification circuit;

[0019] The first end of the second amplifying unit is connected to the input module, the second end of the second amplifying unit is connected to the first end of the modulation unit, the second end of the modulation unit is connected to the processing module, and the third end of the modulation unit is connected to the input module;

[0020] The uplink is used to amplify the second signal sent from the input module, generate a third signal according to the second signal and the modulated signal, and send the third signal to the input module.

[0021] Optionally, the modulation unit includes: a binary phase shift keying modulation unit, and the binary phase shift keying modulation unit is used to generate a third signal according to the first signal and the modulation signal sent by the processing module, and then send the third signal to the input module.

[0022] Optionally, the gain of the RF amplifier circuit is greater than or equal to 18db.

[0023] Optionally, the processing module includes a digital baseband processing circuit for receiving a demodulated signal sent by a downlink; the second end of the processing module is connected to the second end of the uplink, and the processing module is also used to send a carrier modulation signal to the uplink.

[0024] According to a second aspect of the present invention, there is provided an electronic tag working method, the method comprising: controlling the input module to be connected to the downlink signal, the input module to send a first signal to the downlink, and when the processing module completes receiving the demodulated signal, controlling the input module to be disconnected from the downlink signal, and controlling the input module to be connected to the uplink signal;

[0025] After the processing module receives the demodulated signal, the processing module is controlled to send the modulated signal to the third end of the uplink;

[0026] When the uplink completes sending the second signal to the input circuit, the input module and the uplink signal are controlled to be turned off, and the input module and the downlink signal are controlled to be turned on.

[0027] According to a third aspect of the present invention, there is provided an electronic tag device, the device comprising: the device comprising: an energy collection module and the electronic tag described above;

[0028] The energy supply end of the energy collection module is connected to the downlink, the processing module and the power supply end of the uplink, and the energy collection module is used to supply power to the electronic tag.

[0029] The present invention discloses an electronic tag, which includes: an input module electrically connected to a downlink, an uplink and an uplink; the input module electrically connected to an antenna, sending a first signal to the downlink, sending a second signal to the uplink, and sending a third signal sent by the uplink to the antenna; the downlink is connected to a processing module, and a first amplification unit of the downlink is used to receive and amplify the first signal; the downlink is used to generate a demodulation signal according to the first signal and send it to the processing module; the processing module is connected to the uplink, and is used to generate a modulation signal after receiving the demodulation signal and send it to the uplink; the second amplification unit of the uplink is used to receive and amplify the second signal to generate a first carrier signal; the uplink generates a third signal according to the first carrier signal and the modulation signal. The electronic tag of the present invention reduces the minimum receiving sensitivity requirement of the reader when reading the electronic tag, thereby improving the reading and writing distance of the electronic tag.

[0030] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a schematic diagram of the structure of an electronic tag in the prior art;

[0033] Figure 2 A schematic diagram of the structure of an electronic tag provided by an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of another electronic tag structure provided by an embodiment of the present invention;

[0035] Figure 4 An electronic tag working method provided by an embodiment of the present invention;

[0036] Figure 5 An electronic label device is provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0040] Figure 1The electronic tag structure diagram in the prior art includes an envelope detection module 101, a comparison circuit module 102, a digital baseband processing module 103, a reverse modulation unit 104 and an antenna 110. The carrier signal with the modulation signal of the reader is sent to the digital baseband processing module 103 in accordance with the 18000-6C protocol via the antenna 110, the envelope detection module 101, and the comparison circuit module 102 to generate a demodulation signal. After that, the digital baseband processing module 103 generates a modulation signal and sends it to the reverse modulation unit 104, which performs OOK (On-Off Keying) modulation to modulate the reverse signal at the tag end on the carrier and returns it to the reader for identification. For example, in the electronic tag in the prior art, the gain of the reverse modulation unit 104 is -6db, so when the carrier signal received by the tag is 0dbm, the reverse signal strength is -6dbm. Assume that the carrier signal received by the tag is 0dbm, and the reverse signal strength is -6dbm. Specifically, as shown in Table 1 below, if the transmission power of the reader is 30dBm, and the antenna connected to the tag is an antenna with a gain of 8dB, when the theoretical reading distance of the tag is 33m, the transmission loss is 62dB, then the corresponding tag sensitivity is -24dBm, and the required minimum receiving sensitivity of the reader is -83.9dBm. Although in the existing electronic tag structure, the minimum receiving sensitivity of the reader required for the reading and writing distance of 33m -83.9dBm still has a certain redundancy compared to the best reader in the industry (receiving sensitivity -90dBm). However, the highest level of electronic tag receiving sensitivity in the industry is -24dBm, and the reading and writing distance of 33m in the existing electronic tag design has already made the tag sensitivity performance reach the limit. Therefore, the electronic tags in the prior art cannot realize the reading and writing functions for long distances.

[0041]

[0042] Table 1

[0043] Figure 2 A schematic diagram of an electronic tag structure provided by an embodiment of the present invention is shown in FIG. Figure 2As shown, the electronic tag includes: an input module 201, a downlink 202, a processing module 203 and an uplink 204; the input module 201 is electrically connected to a first end of the downlink 202, a first end of the uplink 204 and a second end of the uplink 204; the input module 201 is used to be electrically connected to an antenna 210, and is used to send a first signal sent by the antenna 210 to the first end of the downlink 202, send a second signal sent by the antenna 210 to the first end of the uplink 204, and send a third signal sent by the second end of the uplink 204 to the antenna 210; the downlink 202 is electrically connected to the processing module 203, and the processing module 203 is electrically connected to the uplink 204; the input module 201 is electrically connected to the ... processing module 203 is electrically connected The first end of the module 203 is connected, the downlink 202 includes a first amplifying unit, and the first amplifying unit is used to receive and amplify the first signal; the downlink 202 is used to generate a demodulated signal according to the first signal and send it to the processing module 203; the processing module 203 is connected to the third end of the uplink 204, and the processing module 203 is used to generate a modulated signal after receiving the demodulated signal and send it to the uplink 204; the uplink 204 includes a second amplifying unit, and the second amplifying unit is used to receive and amplify the second signal to generate a first carrier signal; the uplink 204 is also used to generate a third signal according to the first carrier signal and the modulated signal.

[0044] If the reading distance of the electronic tag is to reach 100m, when the transmission power of the reader is selected to be 30dbm and the antenna gain is 8dbi, the parameters are as shown in Table 2:

[0045]

[0046] Table 2

[0047] When the tag theoretical reading distance reaches 100m, the tag receiving sensitivity is ≤-33.6dbm, and the minimum sensitivity requirement of the reader is -103.2dbm. The current maximum level of the existing reader receiving sensitivity is -90dbm, and the existing reader parameters cannot meet the tag reading and writing of 100m. Therefore, in order to enable the tag theoretical reading distance to reach 100m, the gain of the tag reverse signal needs to be increased.

[0048] Specifically, in the downlink 202, the processing of the carrier signal with the reader modulated signal determines the size of the tag sensitivity. In the electronic tag provided by the present invention, a first amplification unit is set in the downlink for amplifying the first signal. Optionally, the antenna gain is set to 8dbi, the reader transmission power is 30dbm, the transmission loss is greater than or equal to 71.6db, and the transmission distance is greater than or equal to 100m. When the amplification gain of the first amplification unit is set to be greater than or equal to 10db, the tag sensitivity can be increased to less than or equal to -33.6dbm.

[0049] In the electronic tag provided by the present invention, a second amplifying unit is provided in the uplink 204 for amplifying the first carrier signal. For example, when a 10db coupler is selected as the coupling end of the antenna, and the amplification gain of the second amplifying unit is set to be greater than or equal to 18db, the gain of the entire reverse signal link is greater than or equal to 8db, and the minimum receiving sensitivity of the reader is -89.2dbm. Compared with the electronic tags in the prior art, the electronic tags provided by the present invention have lower requirements for the minimum receiving sensitivity of the reader.

[0050] Specifically, after the input module 201 receives the first signal sent by the antenna 210, the first signal is sent to the downlink 202. The downlink 202 amplifies and demodulates the first signal. The amplification of the first signal by the first amplifying unit in the downlink 202 improves the sensitivity of the tag. The processing module 203 processes the received demodulated signal to generate a modulated signal, and sends the modulated signal to the uplink 204. In the uplink 204, the uplink 204 receives the second signal sent by the input module 201, and the second amplifying unit amplifies the second signal to generate a first carrier signal. The uplink 204 generates a third signal according to the received modulated signal and the first carrier signal generated by the second amplifying unit, and sends the third signal to the input module 201. After receiving the third signal, the input module 201 sends it to the antenna 210, and the third signal is sent out of the electronic chip through the antenna 210. The processing of the second signal by the uplink 204 reduces the requirement for the minimum receiving sensitivity of the reader.

[0051] In the electronic tag provided by the present invention, a first amplification unit is provided in the downlink to amplify the first signal sent from the input end, thereby improving the tag sensitivity. In the uplink, a second amplifier is provided to amplify the first carrier signal, thereby improving the reverse signal link gain in the downlink, reducing the minimum receiving sensitivity requirement of the reader / writer when reading and writing the electronic tag, thereby improving the readable distance of the electronic tag.

[0052] Figure 3 A schematic diagram of another electronic tag structure provided by an embodiment of the present invention is shown in FIG. Figure 3As shown, the input module 201 includes: a coupler COU1, a first resistor R1, a filter and a multi-way selection switch SW1; the first end of the coupler COU1 is used to be electrically connected to the antenna 210, the second end of the coupler COU1 is connected to the first end of the filter, the second end of the filter is connected to the control end of the multi-way selection switch SW1, the first end of the multi-way selection switch SW1 is electrically connected to the first end of the downlink, the third end of the coupler COU1 is connected to the first end of the uplink, the second end of the multi-way selection switch SW1 is electrically connected to the second end of the uplink, and the fourth end of the coupler COU1 is connected in series with the first resistor R1 and grounded. Optionally, the resistance value of the first resistor R1 is 50Ω.

[0053] Specifically, after the coupler COU1 receives the first signal through the antenna 210, the input module 201 sends the first signal to the downlink 202 through the multi-way selection switch SW1. After the coupler COU1 receives the second signal through the antenna 210, it sends it to the uplink. After the uplink generates a third signal according to the second signal and the modulated signal sent by the processing module, the third signal is sent to the input module through the multi-way selection switch SW1, and the input module sends the third signal to the antenna 210.

[0054] In another electronic tag provided by an embodiment of the present invention, the input module includes a multi-way selection switch for selecting and isolating the downlink and the uplink. The multi-way selector can clearly distinguish and separate the communication channels of the uplink and the downlink. This separation makes the communication process more orderly, reduces interference between links, and thus improves communication efficiency. At the same time, by controlling the selective connection of the antenna through the multi-way selector, the gain of the link can be set for the uplink and downlink, thereby reducing the minimum receiving sensitivity requirement of the electronic tag for the reader when reading and writing, thereby increasing the readable distance of the electronic tag.

[0055] Continue to refer Figure 3 In combination with the above, the downlink 202 includes: an envelope detection unit, a first amplifying unit and a comparing unit; the first end of the envelope detection unit is connected to the input module, the second end of the envelope detection unit is connected to the first end of the first amplifying unit, the second end of the first amplifying unit is connected to the first end of the comparing unit, and the second end of the comparing unit is connected to the first end of the processing module; the first amplifying unit includes an intermediate frequency amplifying circuit for amplifying the first signal; the downlink 202 is used to amplify the first signal, demodulate it, generate a demodulated signal and send it to the processing module.

[0056] Exemplarily, when the first amplifying unit amplifies the first signal, the amplification gain of the first amplifying unit is set to be greater than or equal to 10 dB, the antenna gain is set to 8 dBi, the reader transmit power is set to 30 dBm, the transmission loss is greater than or equal to 71.6 dB, and the transmission distance is greater than or equal to 100 m, as shown in Table 3 below, the tag sensitivity can be increased to less than or equal to -33.6 dBm.

[0057]

[0058] Table 3

[0059] In another electronic tag structure provided by an embodiment of the present invention, an envelope detection unit, a first amplification unit and a comparison unit are set in the downlink to amplify and demodulate the first signal to generate a demodulated signal and then send it to the processing module. After the carrier signal with the reader / writer modulation signal sent by the antenna to the electronic tag is amplified and demodulated, it is sent to the processing module for further processing, thereby improving the sensitivity of the electronic tag.

[0060] Continue to refer Figure 3 ,like Figure 3 As shown, the uplink 204 includes: a second amplifying unit and a modulating unit; the second amplifying unit includes a radio frequency amplifying circuit; the first end of the second amplifying unit is connected to the input module, the second end of the second amplifying unit is connected to the first end of the modulating unit, the second end of the modulating unit is connected to the processing module, and the third end of the modulating unit is connected to the input module; the uplink 204 is used to amplify the second signal sent from the input module, generate a third signal according to the second signal and the modulated signal, and send the third signal to the input module.

[0061] The modulation unit includes: a binary phase shift keying modulation unit, which is used to generate a third signal according to the first signal and the modulation signal sent by the processing module, and then send the third signal to the input module. Compared with the on-off keying modulation in the prior art, the binary phase shift keying modulation can more effectively utilize the signal power under the same communication quality.

[0062] Exemplarily, the gain of the RF amplifier circuit is greater than or equal to 18db. When the coupler model is a 10db signal, as shown in Table 3 above, the gain of the entire reverse signal link is greater than or equal to 8db. If the carrier signal received by the tag end is 0dbm, the carrier at the coupling end is -10dbm, and after amplification by the RF amplifier circuit, it is 8dbm, and finally after binary phase shift keying modulation (gain 0db), the final uplink gain is 8dbm. Then the minimum sensitivity requirement of the reader is -89.2dbm.

[0063] In another electronic tag structure provided by an embodiment of the present invention, after the uplink acquires the second signal, the second signal is amplified by the second amplification unit and sent to the input module after modulation. The amplification of the second signal by the second amplification unit can improve the gain of the reverse signal link, thereby reducing the minimum sensitivity requirement of the reader.

[0064] Continue to refer Figure 3 In combination with the above, the processing module 203 includes a digital baseband processing circuit, and the processing module 203 includes a digital baseband processing circuit, which is used to receive the demodulated signal sent by the downlink; the second end of the processing module 203 is connected to the second end of the uplink, and the processing module 203 is also used to send a carrier modulation signal to the uplink.

[0065] The processing module 203 processes the demodulated signal. When binary phase shift keying modulation is adopted in the uplink 204 , the processing module 203 sends one 0° modulation signal and one 180° modulation signal to the uplink 204 .

[0066] Optionally, the digital baseband processing circuit is a digital baseband processing circuit that complies with the 18000-6C protocol.

[0067] In combination with the above, optionally, as shown in Table 4 below, when the amplification gain of the first unit is set to 12db, the tag sensitivity can be increased to -36dbm. When the amplification gain of the second unit is set to 22db and the coupler model is 10db, the reverse signal gain is 12db. At this time, the read and write distance of the electronic chip can be set to 132m.

[0068]

[0069] Table 4

[0070] Figure 4 An electronic tag working method provided by an embodiment of the present invention is as follows: Figure 4 As shown, combined Figure 2 And the above:

[0071] S301, controlling the input module to be connected to the downlink signal, and the input module sends a first signal to the downlink;

[0072] The input module 201 is connected to the downlink 202 . When the input module receives the first signal sent by the antenna 210 , the input module is controlled to turn on the downlink 202 and send the first signal to the downlink 202 .

[0073] S302, when the processing module receives the demodulated signal, the input module is controlled to be disconnected from the downlink signal, and the input module is controlled to be connected to the uplink signal;

[0074] When the processing module 203 completes receiving the demodulated signal, the first signal is transmitted on the downlink, and the input module is controlled to turn off the downlink 202 signal, and the input module 201 is controlled to turn on the uplink 204 signal, so that the downlink 202 and the uplink 204 are isolated from each other by turning on and off the input module 201. This reduces the interference between the links, thereby improving the communication efficiency.

[0075] Specific, combined Figure 3 As shown, after the input module 201 is connected to the uplink 204 signal, the input module 201 sends a second signal to the uplink 204, the second signal is amplified in the second amplification unit in the uplink 204, a first carrier signal is generated, and the first carrier signal is sent to the modulation unit. The modulation unit generates a third signal according to the first carrier signal and the modulation signal sent by the processing module. The third signal is sent from the uplink 204 to the input module 201 through the conduction circuit between the uplink 204 and the input module 201.

[0076] S303, after the processing module receives the demodulated signal, the processing module is controlled to send the modulated signal to the third end of the uplink;

[0077] After receiving the demodulated signal, the processing module 203 processes the demodulated signal and generates a modulated signal and sends it to the uplink 204. The modulated signal is in the uplink 204 and is used by the modulation unit in the subsequent uplink 204 to generate a third signal based on the first carrier signal and the modulated signal.

[0078] S304, when the uplink completes sending the second signal to the input circuit, the input module is controlled to be disconnected from the uplink signal, and the input module is controlled to be connected to the downlink signal.

[0079] When the uplink 204 completes sending the second signal to the input circuit 201, the signal uplink phase is completed. At this time, the input module 201 and the uplink 202 signal are controlled to be turned off, and the input module 201 and the downlink 202 signal are controlled to be turned on, preparing for the next reading and writing of the electronic chip.

[0080] The embodiment of the present invention provides an electronic tag working method, which controls the electrical connection between the input circuit and the downlink or uplink in each stage through a processing module. During the transmission process, by ensuring the integrity and independence of the downlink signal and the uplink signal, the distortion and error of the signal during the transmission process are reduced. After the demodulated signal is received, the connection with the downlink is immediately cut off, which can prevent the noise or interference in the receiving process from affecting the subsequent signal processing, thereby improving the overall quality of the signal.

[0081] Figure 5An electronic tag device provided by an embodiment of the present invention, such as Figure 5 As shown, the energy supply end of the energy collection module 205 is connected to the power supply end of the downlink 204, the processing module 203 and the uplink 205, and the energy collection module 205 is used to supply power to the above-mentioned electronic tag.

[0082] Optionally, the energy collection module 205 collects at least one of solar energy, temperature difference energy or vibration energy to power the electronic tag.

[0083] Optionally, the energy collection module 205 supplies power to the first amplification unit and the comparison unit of the downlink 202 .

[0084] An electronic tag device provided by an embodiment of the present invention includes an energy collection module to power the electronic tag. In order to reduce the requirements of the electronic tag for the minimum receiving sensitivity of the reader when reading and writing, and to increase the readable distance of the electronic tag, an amplification unit is set in the downlink and uplink, so that the power consumption of the electronic tag is increased. It cannot work directly by directly using the radio frequency carrier energy. The energy collection module is set to power the electronic tag, which reduces the dependence of the electronic tag on batteries or other external power sources, thereby extending the service life of the electronic tag and reducing maintenance costs.

[0085] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronic tag, characterized in that: include: Input module, downlink, processing module and uplink; The input module is electrically connected to the first end of the downlink, the first end of the uplink, and the second end of the uplink; the input module is electrically connected to the antenna, and is used to send the first signal sent by the antenna to the first end of the downlink, send the second signal sent by the antenna to the first end of the uplink, and send the third signal sent by the second end of the uplink to the antenna; The downlink is connected to the first end of the processing module, and the downlink includes a first amplifying unit, and the first amplifying unit is used to receive and amplify the first signal; the downlink is used to generate a demodulated signal according to the first signal and send it to the processing module; The processing module is connected to the third end of the uplink, and the processing module is used to generate a modulated signal after receiving the demodulated signal and send it to the uplink; The uplink includes a second amplifying unit, which is used to receive and amplify the second signal to generate a first carrier signal; the uplink is also used to generate the third signal according to the first carrier signal and the modulation signal.

2. The electronic tag according to claim 1, characterized in that: The input module includes a coupler, a first resistor, a filter and a multi-way selection switch; The first end of the coupler is used to be electrically connected to the antenna, the second end of the coupler is connected to the first end of the filter, the second end of the filter is connected to the control end of the multi-way selection switch, the first end of the multi-way selection switch is electrically connected to the first end of the downlink, the third end of the coupler is connected to the first end of the uplink, the second end of the multi-way selection switch is electrically connected to the second end of the uplink, and the fourth end of the coupler is connected in series with the first resistor and grounded.

3. The electronic tag according to claim 2, characterized in that: The downlink includes: an envelope detection unit, a first amplification unit and a comparison unit; The first end of the envelope detection unit is connected to the input module, the second end of the envelope detection unit is connected to the first end of the first amplification unit, the second end of the first amplification unit is connected to the first end of the comparison unit, and the second end of the comparison unit is connected to the first end of the processing module; The first amplifying unit includes an intermediate frequency amplifying circuit, which is used to amplify the first signal; The downlink is used to amplify and demodulate the first signal to generate a demodulated signal and send it to the processing module.

4. The electronic tag according to claim 3, characterized in that: The amplification gain of the intermediate frequency amplifier circuit is greater than or equal to 10db.

5. The electronic tag according to claim 2, characterized in that: The uplink includes: a second amplification unit and a modulation unit; The second amplification unit includes a radio frequency amplification circuit; The first end of the second amplifying unit is connected to the input module, the second end of the second amplifying unit is connected to the first end of the modulation unit, the second end of the modulation unit is connected to the processing module, and the third end of the modulation unit is connected to the input module; The uplink is used to amplify the second signal sent from the input module, generate a third signal according to the second signal and the modulated signal, and send the third signal to the input module.

6. The electronic tag according to claim 5, characterized in that: The modulation unit includes: a binary phase shift keying modulation unit, and the binary phase shift keying modulation unit is used to generate a third signal according to the first signal and the modulation signal sent by the processing module, and then send the third signal to the input module.

7. The electronic tag according to claim 5, characterized in that: The gain of the radio frequency amplifier circuit is greater than or equal to 18db.

8. The electronic tag according to claim 5, characterized in that: The processing module includes a digital baseband processing circuit for receiving a demodulated signal sent by a downlink; a second end of the processing module is connected to a second end of the uplink, and the processing module is also used to send a carrier modulation signal to the uplink.

9. An electronic tag working method, applied to the electronic tag of any one of claims 1 to 8, characterized in that: The working method comprises: Controlling the input module to be connected to the downlink signal, the input module sends a first signal to the downlink, and when the processing module completes receiving the demodulated signal, controlling the input module to be disconnected from the downlink signal, and controlling the input module to be connected to the uplink signal; After the processing module receives the demodulated signal, the processing module is controlled to send the modulated signal to the third end of the uplink; When the uplink completes sending the second signal to the input circuit, the input module and the uplink signal are controlled to be turned off, and the input module and the downlink signal are controlled to be turned on.

10. An electronic label device, applied to the electronic label of any one of claims 1 to 8, characterized in that: The device comprises: an energy collection module and the electronic tag according to any one of claims 1 to 8; The energy supply end of the energy collection module is connected to the power supply end of the downlink, the processing module and the uplink, and the energy collection module is used to power the electronic tag of any one of claims 1-8.

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