CN110857892A - Cold chain temperature monitoring system and method based on dual-mode label - Google Patents
Cold chain temperature monitoring system and method based on dual-mode label Download PDFInfo
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- CN110857892A CN110857892A CN201810962839.1A CN201810962839A CN110857892A CN 110857892 A CN110857892 A CN 110857892A CN 201810962839 A CN201810962839 A CN 201810962839A CN 110857892 A CN110857892 A CN 110857892A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 55
- 238000004146 energy storage Methods 0.000 claims description 24
- 230000007935 neutral effect Effects 0.000 claims description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
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Abstract
The invention discloses a system and a method for monitoring cold chain temperature based on a dual-mode label, wherein the system comprises a temperature measurement label, a data receiving end and a data processing end, wherein the temperature measurement label is in a passive working mode daily, responds to a command sent by a reader-writer, acquires the instant temperature in a transport box and feeds back the acquired information to the reader-writer in a passive mode, enters the active working mode when receiving a starting active command signal of the reader-writer, continuously acquires and stores the temperature in the transport box according to a preset time interval, and transmits the acquired information to the data receiving end through RFID when the temperature data of the label needs to be read in batch; the invention also discloses a device for monitoring the temperature of the cold chain, which comprises a reader-writer and a temperature monitoring module, wherein the reader-writer is used for sending a command to enable the temperature measurement tag to enter an active working mode, controlling the temperature measurement tag to continuously collect the temperature and reading the information collected by the temperature measurement tag.
Description
Technical Field
The invention relates to the technical field of temperature monitoring, in particular to a system and a method for monitoring cold chain temperature based on a dual-mode label.
Background
The cold chain transportation requires that the transported goods always keep a certain temperature in the whole transportation process, no matter links such as loading, unloading, carrying, changing transportation modes, changing packaging equipment and the like, and some or even colleagues require to keep a certain humidity in the process.
For cold chain transportation, a traditional monitoring mode is to use a temperature recorder to measure and record the temperature of the whole carriage, that is, one or more temperature recorders are placed on each transport vehicle to measure and record the temperature in the transportation process, when the goods arrive at the transportation destination, the temperature recorders and the computer are connected by wire to lead the data into the computer, and then data statistics and analysis are performed, for example, the maximum value, the minimum value, the curve trend and the like are found out. However, the conventional temperature recorder has the following drawbacks:
1. the price is high, the volume is large, the use and maintenance cost is high, and the method is not suitable for simple and practical use by workers in all walks and universities;
2. the temperature of a single box body cannot be measured, and basically the monitoring of a transport vehicle is completed, but the monitoring of the transported objects is not completed;
3. the temperature condition of the transported object in the whole process cannot be truly reflected, the product information cannot be automatically identified, the data can be derived only by wired connection and manual intervention, and the temperature of the transported object in the vehicle cannot be tracked in real time;
4. in some modes of transportation, such as air transportation, the temperature monitoring device cannot be used, and therefore real-time temperature monitoring cannot be carried out.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a system and a method for monitoring the temperature of a cold chain based on a dual-mode label, so as to realize a cold chain temperature monitoring technology which is suitable for measuring the temperature of a single box body, can track the temperature in real time, is suitable for any transportation mode and does not need manual intervention.
In order to achieve the above object, the present invention provides a dual-mode tag-based cold chain temperature monitoring system, which includes:
the temperature measurement tag is in a passive working mode daily, responds to a command sent by a reader-writer, collects the instant temperature in the transport box and feeds back the collected information to the reader-writer in a passive mode, enters an active working mode when receiving a command signal for starting the active working mode of the reader-writer, is powered on, continuously collects and stores the temperature in the transport box according to a certain time interval, and transmits the collected information to a data receiving end in an RFID (radio frequency identification) mode when the temperature data of the tag needs to be read in batches;
and the reader-writer is used for sending a command to enable the temperature measurement label to enter an active working mode, controlling the temperature measurement label to continuously acquire the temperature and reading the information acquired by the temperature measurement label.
Preferably, the thermometric tag comprises:
the RFID temperature sensing chip is in a passive working mode daily, responds to a received command of the reader-writer, enters an active working mode when receiving a radio frequency signal of the reader-writer, and continuously collects the temperature at certain time intervals by using energy provided by the energy storage device;
the antenna is used for receiving and transmitting the RFID wireless signal;
and the energy storage device is controlled to be switched off in the passive working mode and is controlled to be switched on in the active working mode so as to keep the RFID temperature sensing chip to perform temperature measurement at regular time.
Preferably, the energy storage device is controlled to be turned on and off by a switch, when the RFID temperature sensing chip receives a command signal for starting an active working mode of the reader/writer, the switch is controlled to be turned on to turn on the power supply so that the temperature measurement tag enters the active working mode, and when the command signal for turning off the active working mode of the reader/writer is received, the switch is controlled to be turned off to turn off the power supply so that the temperature measurement tag returns to the passive working mode.
Preferably, when the temperature measurement tag is in the passive working mode and does not receive the radio frequency signal of the reader-writer, the RFID temperature sensing chip controls the switch to be closed to switch on the power supply, so that the temperature measurement tag enters the active working mode.
Preferably, when the temperature measuring tag is in an active working mode, passive reading can be performed at any time in a temperature acquisition neutral period, and when the temperature measuring tag and the temperature acquisition neutral period conflict with each other, the current mode is preferred.
Preferably, the RFID temperature sensing chip includes a radio frequency circuit, a control module, a temperature sensor, a voltage stabilizing circuit and a memory, the radio frequency circuit is configured to receive a command sent by the reader/writer, transmit the sent command to the temperature sensor through the control module to control the temperature sensor to complete temperature measurement, and feed back information acquired by the temperature sensor to the reader/writer through the control module, the voltage stabilizing circuit is connected to the radio frequency circuit to rectify a radio frequency signal received by the radio frequency circuit to provide energy of other modules so as to save energy of an energy storage device, when the radio frequency circuit does not receive the radio frequency signal of the reader/writer or receives a command signal for starting an active operating mode of the reader/writer, the RFID temperature sensing chip enters the active operating mode, the control module and the temperature sensor are powered by the energy storage device, the control module controls the temperature sensor to continuously collect temperature according to a certain time interval, and collected information is transmitted to a data receiving end in an RFID mode when a command of reading tag data in batches is received.
Preferably, the RFID temperature sensing chip, the antenna, and the energy storage device are integrally assembled and mounted in the transportation box, and the reader is a handheld reader or a fixed reader mounted in a transportation carriage or a warehouse.
Preferably, a plurality of temperature measuring labels are installed in the transport box so as to completely measure the temperature in the transport box at different positions.
In order to achieve the above object, the present invention further provides a method for monitoring a cold chain temperature based on a dual-mode tag, comprising the following steps:
step S1, arranging the temperature measuring label in the transport box, and installing the reader-writer in the transport carriage or the warehouse;
step S2, the temperature measurement label works in a passive working mode daily, responds to the command sent by the reader-writer when receiving the radio frequency signal of the reader-writer, collects the instant temperature in the transport box and feeds back the collected information to the reader-writer in a passive mode;
and step S3, entering an active working mode when receiving a command signal for starting the active working mode of the reader-writer, switching on a power supply, continuously collecting and storing the temperature in the transport box according to a certain time interval, and transmitting the collected information to a data receiving end in an RFID mode when the temperature data of the tags are required to be read in batches.
Preferably, when the temperature measuring tag is in an active working mode, the temperature measuring tag can be passively read at any time in a temperature collection neutral period, and when the temperature measuring tag and the temperature collecting neutral period conflict, the current mode is preferred.
Compared with the prior art, the cold chain temperature monitoring system based on the dual-mode tag disclosed by the invention has the advantages that the temperature measurement tag is in a passive working mode daily, the temperature measurement action is completed by responding to the command sent by the reader-writer so as to be suitable for the carriage or warehouse environment where the tag can be read by the reader-writer, the tag enters the active working mode when the active working mode command signal of the reader-writer is received, the temperature in the transport box is continuously collected at certain time intervals, and the batch reading data is provided so as to be suitable for the environment leaving the transport carriage or warehouse such as airplane loading or short-time transition, so that the cold chain temperature monitoring technology which is suitable for measuring the temperature of a single box body, can be used for carrying out temperature tracking in real time and carrying out temperature monitoring continuously and is suitable for any transport mode without manual intervention is realized.
Drawings
FIG. 1 is a system architecture diagram of a dual-mode tag-based cold chain temperature monitoring system according to the present invention;
FIG. 2 is a system architecture diagram of a dual mode tag based cold chain temperature monitoring system according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating steps of a method for monitoring a cold chain temperature based on a dual mode tag according to the present invention.
Detailed Description
Other advantages and capabilities of the present invention will be readily apparent to those skilled in the art from the present disclosure by describing the embodiments of the present invention with specific embodiments thereof in conjunction with the accompanying drawings. The invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the spirit and scope of the present invention.
Fig. 1 is a system architecture diagram of a dual-mode tag-based cold chain temperature monitoring system according to the present invention. As shown in FIG. 1, the invention relates to a cold chain temperature monitoring system based on a dual-mode tag, which comprises a temperature measurement tag 1 and a reader-writer 2.
The temperature measurement tag 1 is arranged in the transport box, the temperature measurement tag 1 works in a passive working mode daily, when a radio frequency signal of the reader-writer 2 is received, a command sent by the reader-writer 2 is responded to complete temperature measurement, the instant temperature in the transport box is collected, the collected information is fed back to the reader-writer 2 in a passive mode, the active working mode is started when the command signal for starting the active working mode of the reader-writer 2 is received, the temperature in the transport box is collected continuously and stored according to a certain time interval, and the collected information is transmitted to a data receiving end in an RFID mode when the temperature data of the tag needs to be read in batches; the reader-writer 2 is a handheld reader-writer or a fixed reader-writer installed in a transport carriage or a warehouse, and is configured to send a command to the temperature measurement tag 1 to control the working state of the temperature measurement tag and obtain information acquired by the temperature measurement tag 1, and specifically, the reader-writer 2 is configured to send a command to enable the temperature measurement tag 1 to enter an active working mode, enable the temperature measurement tag 1 to continuously acquire temperature, and read information acquired by the temperature measurement tag 1. Preferably, after the continuous temperature monitoring is finished, the reader/writer 2 may also send a command to enable the temperature measurement tag 1 to close the active working mode, so that the temperature measurement tag 1 returns to the passive working mode.
Specifically, the RFID temperature sensing chip 10, the antenna 11, and the energy storage device 12 form a temperature measurement tag 1, which is usually in a passive working mode, and is configured to receive a radio frequency signal of the reader/writer 2, respond to a received command of the reader/writer 2 to complete a temperature measurement operation, collect temperature in the transportation box, feed back collected information to the reader/writer 2 in a passive manner, enter an active working mode when receiving a command signal for starting the active working mode of the reader/writer 2, that is, start the energy storage device 12, and perform continuous collection of temperature at a certain time interval by using energy provided by the energy storage device; an antenna 11 for transceiving an RFID wireless signal; the energy storage device 12 can be a button battery or a paper battery, and is in a closed state daily, that is, the RFID temperature sensing chip is in a passive working mode, and is turned on when the RFID temperature sensing chip 10 receives a command signal for starting an active working mode of the reader/writer 2 to keep the RFID temperature sensing chip 10 to measure the temperature at a fixed time. Preferably, when the RFID temperature sensing chip 10 is in the active operation mode, the RFID temperature sensing chip 10 can still be passively temperature-read during the temperature collection interval, and the current mode is preferred when the two collection actions conflict.
Further, the RFID temperature sensing chip 10 includes a radio frequency circuit 101, a control module 102, a temperature sensor 103, a voltage stabilizing circuit 104, and a memory 105, wherein the radio frequency circuit 101 is configured to receive a command sent by the reader/writer 2, and transmit the sent command to the temperature sensor 103 through the control module 102 to control the temperature sensor 103 to complete temperature measurement, and simultaneously acquire temperature data collected by the temperature sensor 103 through the control module 102 and feed back the temperature data to the reader/writer 2, the radio frequency circuit 101 is further connected to the voltage stabilizing circuit 104, the voltage stabilizing circuit 104 is configured to rectify a radio frequency signal received by the radio frequency circuit 101 to provide energy of other modules to save energy of the energy storage device 12, and simultaneously, when the radio frequency circuit 101 does not receive a radio frequency signal of the reader/writer 2 or receives a command signal for starting an active operating mode of the reader/writer, the RFID temperature sensing chip enters an active operating mode, the control module 102 and the temperature sensor 103 are powered by the energy storage device 12, the control module 102 controls the temperature sensor 103 to continuously collect the temperature in the transport box according to a certain time interval, and transmits collected information to a data receiving end in an RFID mode when receiving batch read tag data, and the memory 105 is used for storing the collected tag data. The RFID temperature sensing chip 10 also directly uploads all detected temperature data in an RFID manner, which is not described herein.
Fig. 2 is a block diagram of a dual-mode tag based cold chain temperature monitoring system according to an embodiment of the present invention. The invention will be further illustrated by the following specific examples:
the cold chain temperature monitoring system comprises an RFID temperature sensing chip 10, an antenna 11, an energy storage device 12 and a reader-writer 2. The RFID temperature sensing chip comprises a radio frequency circuit (RF)101, a baseband module (BB)102, a built-in temperature Sensor (Sensor)103, a voltage stabilizing circuit (RECT)104 and a memory 105, the RFID temperature sensing chip works in a passive working mode in daily life, when receiving a command sent by a reader-writer, the RFID temperature sensing chip responds to the command sent by the reader-writer by using the energy of a radio frequency signal of the reader-writer to finish actions such as temperature measurement and data uploading, and when receiving a command signal for starting an active working mode of the reader-writer, the RFID temperature sensing chip enters an active working mode, and the energy of an energy storage device 12 is used for continuously collecting the temperature in a transport box at a certain time interval; an antenna 11 for transceiving an RFID wireless signal; the energy storage device 12 is a button battery and is used for keeping timing to measure the temperature in an active working mode (for example, receiving an active working mode starting command signal of a reader-writer); the reader-writer 2 is a handheld reader-writer or a fixed reader-writer arranged in a transport carriage or a warehouse and is used for sending a command to enable the temperature measurement tag to enter an active working mode, controlling the temperature measurement tag to continuously collect temperature and reading information collected by the temperature measurement tag. The specific work is as follows:
1. the RFID temperature sensing chip 10, the antenna 11 and the energy storage device 12 are integrally assembled and installed on the transport case, are in a passive working mode daily, receive a command sent by a reader-writer, and respond to the command of the reader-writer, for example, the temperature in the transport case is measured and the acquired information is fed back to the reader-writer in a passive mode; the method comprises the steps of entering an active working mode when an active command signal for starting a reader-writer is received, switching on a power supply, continuously collecting and storing the temperature in a transport box according to a certain time interval, and transmitting collected information to a data receiving end through an RFID when tag temperature data needs to be read in batches;
2. the reader-writer 2 sends a command to control the RFID temperature sensing chip 10 to work, when an active working mode needs to be entered, for example, in order to avoid chain breaking of temperature records when the reader-writer leaves a transport carriage or a warehouse, such as getting on an airplane or transferring for a short time, the reader-writer 2 sends a starting active command signal to the RFID temperature sensing chip at the beginning of the life cycle of article circulation needing temperature monitoring so as to control the RFID temperature sensing chip to enter the active working mode, the RFID temperature sensing chip is connected with an energy storage device, and the temperature in the transport box is continuously collected and stored according to a certain time interval;
3. when the goods are received in a receiving warehouse, if the temperature data of the tags need to be read in batches, the acquired information is transmitted to a data receiving end through the RFID, so that the purpose of avoiding unpacking is achieved, and the goods acceptance efficiency is greatly improved;
4. the RFID temperature sensing chip 10, the antenna 11 and the energy storage device 12 form a temperature measurement tag 1, and a plurality of temperature measurement tags 1 can be installed in the transport box to completely measure the temperature in the transport box at different positions.
Fig. 3 is a flowchart illustrating steps of a method for monitoring a cold chain temperature based on a dual mode tag according to the present invention. As shown in fig. 3, the method for monitoring the temperature of the cold chain based on the dual-mode tag of the present invention includes the following steps:
step S1, arranging the temperature measuring label in the transport box, and installing the reader-writer in the transport carriage or the warehouse;
step S2, the temperature measurement label works in a passive working mode daily, responds to the command sent by the reader-writer when receiving the radio frequency signal of the reader-writer, collects the instant temperature in the transport box and feeds back the collected information to the reader-writer in a passive mode;
and step S3, entering an active working mode when receiving a command signal for starting the active working mode of the reader-writer, switching on a power supply, continuously collecting and storing the temperature in the transport box according to a certain time interval, and transmitting the collected information to a data receiving end in an RFID mode when the temperature data of the tags are required to be read in batches.
Preferably, when the active operation mode is not needed, for example, after the continuous temperature monitoring is finished, the passive operation mode is returned to and the power supply is disconnected when the command signal for turning off the active operation mode of the reader/writer is received.
Preferably, when the temperature measuring tag is in an active working mode, the temperature measuring tag can work in a passive mode at the same time in a temperature acquisition interval, the instant temperature is read, and when the temperature measuring tag and the temperature acquisition interval conflict, the current mode is preferred.
In summary, the cold chain temperature monitoring system based on the dual-mode tag of the present invention responds to the command sent by the reader/writer by making the temperature measuring tag be in the passive working mode daily, so as to be suitable for the carriage or warehouse environment where the reader/writer can read the tag, and when receiving the command signal for starting the active working mode of the reader/writer, the tag enters the active working mode, and continuously collects the temperature in the transportation box at a certain time interval, and provides batch reading data to be suitable for the environment leaving the transportation carriage or warehouse, such as boarding plane or short-time transition, so as to realize a cold chain temperature monitoring technology suitable for measuring the temperature of a single box body, performing temperature tracking in real time, performing temperature monitoring continuously, and being suitable for any transportation mode without manual intervention.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, the scope of the invention should be determined from the following claims.
Claims (10)
1. A dual-mode tag-based cold chain temperature monitoring system, comprising:
the temperature measurement tag is in a passive working mode daily, responds to a command sent by a reader-writer, collects the instant temperature in the transport box and feeds back the collected information to the reader-writer in a passive mode, enters an active working mode when receiving a command signal for starting the active working mode of the reader-writer, is powered on, continuously collects and stores the temperature in the transport box according to a preset time interval, and transmits the collected information to a data receiving end in an RFID (radio frequency identification) mode when the temperature data of the tag needs to be read in batches;
and the reader-writer is used for sending a command to enable the temperature measurement label to enter an active working mode, controlling the temperature measurement label to continuously acquire the temperature and reading the information acquired by the temperature measurement label.
2. The dual-mode tag-based cold chain temperature monitoring system of claim 1, wherein the temperature measuring tag comprises:
the RFID temperature sensing chip is in a passive working mode daily, responds to a received command of the reader-writer, enters an active working mode when receiving a radio frequency signal of the reader-writer, and continuously collects the temperature at certain time intervals by using energy provided by the energy storage device;
the antenna is used for receiving and transmitting the RFID wireless signal;
and the energy storage device is controlled to be switched off in the passive working mode and is controlled to be switched on in the active working mode so as to keep the RFID temperature sensing chip to perform temperature measurement at regular time.
3. The dual-mode tag-based cold-chain temperature monitoring system of claim 2, wherein: the energy storage device is controlled to be turned on and off by a switch, when the RFID temperature sensing chip receives a command signal for starting an active working mode of the reader-writer, the switch is controlled to be turned on and turned off to enable the temperature measuring tag to enter the active working mode, and when the command signal for turning off the active working mode of the reader-writer is received, the switch is controlled to be turned off to turn off the power supply to enable the temperature measuring tag to return to the passive working mode.
4. The dual-mode tag-based cold-chain temperature monitoring system of claim 3, wherein: when the temperature measurement label is in a passive working mode and does not receive a radio frequency signal of a reader-writer, the RFID temperature sensing chip controls the switch to be closed to switch on a power supply so that the temperature measurement label enters an active working mode.
5. The dual-mode tag-based cold-chain temperature monitoring system of claim 3, wherein: when the temperature measurement tag is in an active working mode, passive reading can be performed at any time in a temperature acquisition neutral period, and when the temperature measurement tag and the temperature acquisition neutral period conflict with each other, the current mode is preferred.
6. The dual-mode tag-based cold-chain temperature monitoring system of claim 2, wherein: the RFID temperature sensing chip comprises a radio frequency circuit, a control module, a temperature sensor, a voltage stabilizing circuit and a memory, wherein the radio frequency circuit is used for receiving a command sent by the reader-writer, transmitting the sent command to the temperature sensor through the control module to control the temperature sensor to finish temperature measurement, and feeding back information acquired by the temperature sensor to the reader-writer through the control module, the voltage stabilizing circuit is connected with the radio frequency circuit and is used for rectifying a radio frequency signal received by the radio frequency circuit to provide energy of other modules so as to save energy of an energy storage device, when the radio frequency circuit does not receive a radio frequency signal of the reader-writer or receives a command signal of starting an active working mode of the reader-writer, the RFID temperature sensing chip enters the active working mode, and the control module and the temperature sensor are powered by the energy storage device, the control module controls the temperature sensor to continuously acquire temperature according to a certain time interval, and transmits acquired information to the data receiving end in an RFID mode when receiving a command of reading tag data in batches.
7. The dual-mode tag-based cold-chain temperature monitoring system of claim 2, wherein: the RFID temperature sensing chip, the antenna and the energy storage device are integrally assembled and installed in the transport case, and the reader-writer is a handheld reader-writer or a fixed reader-writer installed in a transport carriage or a warehouse.
8. The dual-mode tag-based cold-chain temperature monitoring system of claim 6, wherein: and a plurality of temperature measurement labels are arranged in the transport box to completely measure the temperature in the transport box at different positions.
9. A cold chain temperature monitoring method based on a dual-mode label comprises the following steps:
step S1, arranging the temperature measuring label in the transport box, and installing the reader-writer in the transport carriage or the warehouse;
step S2, the temperature measurement label works in a passive working mode daily, responds to the command sent by the reader-writer when receiving the radio frequency signal of the reader-writer, collects the instant temperature in the transport box and feeds back the collected information to the reader-writer in a passive mode;
and step S3, entering an active working mode when receiving a command signal for starting the active working mode of the reader-writer, switching on a power supply, continuously collecting and storing the temperature in the transport box according to a preset time interval, and transmitting the collected information to a data receiving end in an RFID mode when the temperature data of the tags are required to be read in batches.
10. The method for monitoring the temperature of the cold chain based on the dual-mode label as claimed in claim 9, wherein: when the temperature measurement tag is in an active working mode, the temperature measurement tag can be passively read at any time in a temperature collection neutral period, and when the temperature measurement tag and the temperature collection neutral period conflict, the current mode is preferred.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112837012A (en) * | 2021-02-02 | 2021-05-25 | 永道射频技术股份有限公司 | Method for monitoring cold-chain logistics temperature data by using RFID (radio frequency identification) tag |
| CN114444631A (en) * | 2022-01-25 | 2022-05-06 | 广州龙建达电子股份有限公司 | Warehouse archive asset management method and system based on RFID and Internet of things technology |
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