CN108537081B - Reading method of batch logistics labels and logistics label system - Google Patents
Reading method of batch logistics labels and logistics label system Download PDFInfo
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- CN108537081B CN108537081B CN201810300388.5A CN201810300388A CN108537081B CN 108537081 B CN108537081 B CN 108537081B CN 201810300388 A CN201810300388 A CN 201810300388A CN 108537081 B CN108537081 B CN 108537081B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
- G06K7/10079—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions
- G06K7/10089—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions the interrogation device using at least one directional antenna or directional interrogation field to resolve the collision
- G06K7/10099—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions the interrogation device using at least one directional antenna or directional interrogation field to resolve the collision the directional field being used for pinpointing the location of the record carrier, e.g. for finding or locating an RFID tag amongst a plurality of RFID tags, each RFID tag being associated with an object, e.g. for physically locating the RFID tagged object in a warehouse
Abstract
The invention relates to a reading method of a batch logistics label and a logistics label system. Receiving a reading instruction sent by a controller, and generating a random number not greater than a maximum value; monitoring wireless signals, and if the logistics label signal monitoring is finished and no effective wireless signal is received, sending a response signal; other logistics labels monitor the response signal and enter a state of receiving response confirmation; the logistics label sending the response signal receives the response confirmation signal and quits the reading instruction flow; and repeating the steps until all the logistics labels send the response signals and receive the response confirmation signals sent by the controller. The invention adopts the wireless signal monitoring technology to monitor whether the surrounding wireless signals are effective or not. The random number is adopted to disperse the wireless signal monitoring time, so that the probability of collision generated when the logistics electronic tag sends the wireless signal can be effectively controlled. And a wireless signal response confirmation mechanism is adopted, so that the active number of the logistics electronic tags is effectively reduced.
Description
Technical Field
The invention belongs to the field of logistics, and particularly relates to a method for reading a batch logistics label and a logistics label system.
Background
With electronic commerce increasingly deepening into people's daily life, more and more people purchase the life needs through the mode of online shopping, it is also more and more common to use logistics label to carry out logistics management. When a plurality of logistics tags communicate with the reader, the wireless signals interfere with each other and generate data collision. How to quickly and effectively read the information in the batch logistics label becomes a difficult problem. The general approach includes enumeration and signal anti-collision algorithms. The enumeration method is inefficient, requiring a lengthy process when the tag ID number is long. The signal anti-collision algorithm is complex and generally not easy to master, and when the number of logistics labels is large, the probability of error is increased.
The prior art mainly has the following problems:
(1) and signal collision is generated when the batch logistics label information is read.
(2) The process is long when batch logistics label information is read, and the efficiency is low.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a method for reading a lot of logistics labels and a logistics label system.
According to an aspect of the present invention, there is provided a method for reading a batch logistics label, comprising the steps of:
s1, receiving a reading instruction sent by the controller by the logistics label, wherein the reading instruction comprises a maximum value of a random number, and generating the random number which is not greater than the maximum value;
s2, monitoring wireless signals, and if the logistics label signal monitoring is finished and no effective wireless signal is received, sending a response signal;
s3, if other physical distribution labels monitor the response signal, quitting the wireless signal monitoring;
s4, the logistics label sending the response signal receives the response confirmation signal sent by the controller, and the reading instruction flow is quitted;
s5, the logistics label which does not send the reply signal repeats the steps S2-S4 until all the logistics labels send the reply signal and receive the reply confirmation signal sent by the controller.
Wherein the random number maximum is a maximum value of the random number, which the random number cannot exceed.
Whether the wireless signal is effective is judged by monitoring the signal strength of the wireless signal and/or the preamble sequence of the wireless signal data frame.
Further, in step S2, the logistics label that sends the response signal is the logistics label that generates the random number the smallest in this round. The logistics label with the minimum random number firstly finishes signal monitoring and sends a response signal. The response signal can be heard by other logistics labels. Once other logistics labels hear the response signal, they do not send the response signal any more. The mechanism can ensure that the same reading instruction only has one logistics tag with a response signal.
Further, the random number maximum is the same or approximately the same as the number of logistics label receiving the read instruction.
If the maximum value of the random number is large, the range of the generated random number is wide, which may cause the monitoring time of the logistics label to be lengthened and reduce the monitoring efficiency. If the maximum value of the random number is small, the range of the generated random number becomes narrow, the minimum random number is generated, the same logistics labels become more, and the probability of signal collision becomes larger when the random numbers simultaneously transmit the response signals. It is desirable that the random number maximum be the same or approximately the same value as the logistics tag receiving the read command.
Further, the monitoring duration is a random number × unit time.
Further, the logistics label and the controller are communicated through Sub-1GHz wireless signals.
According to another aspect of the present invention, there is provided a logistics label system, comprising:
the reading instruction receiving unit is configured for receiving a reading instruction sent by the controller by the logistics label, wherein the reading instruction comprises a maximum value of the random number and generates the random number which is not greater than the maximum value;
the response signal transmitting unit: the system is configured for wireless signal monitoring, and if the logistics label signal monitoring is finished and a valid wireless signal is not received, a response signal is sent;
a response confirmation state receiving unit: the wireless signal monitoring is quitted if other logistics labels monitor the response signal;
the response confirmation signal receiving unit: configuring a logistics label for sending a response signal to receive a response confirmation signal sent by a controller, and quitting a reading instruction flow;
repeating unit: and repeating the round-going steps until all the logistics labels send response signals and receive response confirmation signals sent by the controller.
The response signal sending unit is configured to send the logistics label of the response signal as the logistics label with the minimum random number generated in the current round.
The random number maximum value generated by the read instruction receiving unit is the same or approximately the same as the number value of the logistics label receiving the read instruction.
The monitoring time configured by the reading instruction receiving unit is a random number multiplied by unit time.
According to an aspect of the present invention, there is provided an apparatus comprising:
one or more processors;
a memory for storing one or more programs,
the one or more programs, when executed by the one or more processors, cause the one or more processors to perform the method of any of the above.
According to an aspect of the invention, there is provided a computer readable storage medium storing a computer program which, when executed by a processor, implements a method as claimed in any one of the above.
Compared with the prior art, the invention has the following beneficial effects:
1. the logistics label receives a reading instruction sent by a controller, wherein the reading instruction comprises a maximum value of a random number, and the random number not greater than the maximum value is generated; monitoring wireless signals, if the logistics label signal monitoring is finished and no effective wireless signal is received, sending a response signal, and entering a response receiving confirmation state; other logistics labels monitor the response signal, quit wireless signal monitoring and enter a state of receiving response confirmation; the logistics label sending the response signal receives the response confirmation signal sent by the controller, and exits from the reading instruction flow; and the logistics label which does not send the response signal repeats the steps S2-S4 until all the logistics labels send the response signal and receive the response confirmation signal sent by the controller. The invention adopts the wireless signal monitoring technology to monitor whether the surrounding wireless signals are effective or not. The random number is adopted to disperse the wireless signal monitoring duration, the probability that the logistics electronic tags send wireless signals to generate conflicts can be effectively controlled, and the problem of wireless signal conflicts generated when batch logistics tags return response data is effectively solved. And a wireless signal response confirmation mechanism is adopted, so that the active number of the logistics electronic tags is effectively reduced.
2. In the logistics label system, the reading instruction receiving unit is configured to receive a reading instruction sent by the controller, the reading instruction comprises a maximum value of a random number, and the random number not greater than the maximum value is generated; the response signal sending unit is configured to monitor wireless signals, and if the logistics label signal monitoring is finished and no effective wireless signal is received, the response signal sending unit sends a response signal and enters a response receiving confirmation state; the response confirmation state receiving unit is configured to monitor the response signal by other logistics labels, quit wireless signal monitoring and enter a response confirmation receiving state; the response confirmation signal receiving unit is configured to send a response confirmation signal sent by the logistics label receiving controller and quit the reading instruction flow; the repeating unit is configured for the logistics labels which do not send the response signals, and the repeating round step is repeated until all the logistics labels send the response signals and receive the response confirmation signals sent by the controller. Simple structure mutually supports, interact through above-mentioned unit, adopts random number to disperse wireless signal and monitors for a long time, effectively solves the problem of the wireless signal conflict that produces when the commodity circulation label returns response data in batches.
3. The device of the example of the invention executes the method according to any one of the above items by one or more processors, and adopts the random number to disperse the wireless signal monitoring time length, so as to control the probability of the wireless signal collision generated when the logistics electronic tag sends the wireless signal, thereby effectively solving the problem of the wireless signal collision generated when the batch logistics tag returns the response data. And a wireless signal response confirmation mechanism is adopted, so that the active number of the logistics electronic tags is effectively reduced.
4. The computer readable storage medium of the computer program of the example of the present invention, when executed by the processor, implements the method as described in any of the above, effectively solves the problems of signal collision generated during reading of the electronic tag information of the bulk logistics, long process and low efficiency during reading of the electronic tag information of the bulk logistics, and facilitates the popularization of the reading method of the electronic tag of the bulk logistics.
Drawings
FIG. 1 is a diagram of a connection structure of a flow label according to an embodiment;
fig. 2 is a flowchart of a method for reading a batch flow label according to an embodiment.
Detailed Description
In order to better understand the technical scheme of the invention, the invention is further explained by combining the specific embodiment and the attached drawings of the specification.
The first embodiment is as follows:
the connection structure of the logistics label is shown in figure 1.
The controller is a main device, and the logistics label is a slave device. The controller and the logistics tag communicate by using a Sub-1GHz wireless signal of a shared channel. The logistics label has the functions of wireless signal receiving, sending and monitoring.
The embodiment provides a method for reading a batch logistics label, which comprises the following steps:
and S1, receiving a reading instruction sent by the controller by the logistics label, wherein the reading instruction comprises a maximum value of the random number, and generating the random number which is not greater than the maximum value.
The method specifically comprises the following steps:
(1) all the logistics labels enter a receiving instruction state after being started.
(2) The controller initiates a read command, wherein the read command comprises a maximum random number with a size approximately equal to the number of the logistics tags.
(3) All the flow labels, upon receiving the command, generate a random number no greater than a maximum value.
And S2, monitoring wireless signals, and if the logistics label signal monitoring is finished and no effective wireless signal is received, sending a response signal and entering a response receiving confirmation state. The time to turn on listening is a random number x unit time (e.g., one millisecond).
The method specifically comprises the following steps:
the logistics tag with the minimum random number firstly finishes signal monitoring, and sends a response signal if no valid wireless signal is found, and then enters a state of receiving response confirmation.
And S3, the other logistics labels monitor the response signal, quit the wireless signal monitoring and enter a state of receiving response confirmation.
The method specifically comprises the following steps:
(1) when a logistics label sends a response signal, other logistics labels monitor the signal, then the wireless signal monitoring is quitted, and then the state of receiving response confirmation is entered.
(2) And after receiving the response signal, the controller initiates a response confirmation instruction.
And S4, the logistics label sending the response signal receives the response confirmation signal sent by the controller, and the reading instruction flow is quitted.
S5, repeating the steps S2-S4 until all the logistics labels send the response signals and receive the response confirmation signals sent by the controller, and the controller confirms the logistics labels which do not send the response signals.
The embodiment provides a logistics label system, including:
the reading instruction receiving unit is configured for receiving a reading instruction sent by the controller by the logistics label, wherein the reading instruction comprises a maximum value of the random number and generates the random number which is not greater than the maximum value;
the response signal transmitting unit: the system is configured for wireless signal monitoring, and if the logistics label signal monitoring is finished and a valid wireless signal is not received, a response signal is sent to enter a response receiving confirmation state;
a response confirmation state receiving unit: the system is configured to be used for other logistics labels to monitor the response signal, quit wireless signal monitoring and enter a state of receiving response confirmation;
the response confirmation signal receiving unit: configuring a logistics label for sending a response signal to receive a response confirmation signal sent by a controller, and quitting a reading instruction flow;
repeating unit: and repeating the round-going steps until all the logistics labels send response signals and receive response confirmation signals sent by the controller.
And the logistics label sending the response signal generates the logistics label with the minimum random number for the current round.
The random number maximum is the same or approximately the same value as the number of logistics label receiving the read instruction.
The listening time is a random number x unit time.
This embodiment provides an apparatus, the apparatus comprising:
one or more processors;
a memory for storing one or more programs,
the one or more programs, when executed by the one or more processors, cause the one or more processors to perform the method of any of the above.
The present embodiments provide a computer readable storage medium storing a computer program which, when executed by a processor, implements a method as claimed in any one of the above.
Example two
The same features of this embodiment and the first embodiment are not described again, and the different features of this embodiment and the first embodiment are:
the time to turn on listening is a random number x unit time (e.g., 1.5 milliseconds).
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the features described above have similar functions to (but are not limited to) those disclosed in this application.
Claims (7)
1. A reading method of a batch logistics label is characterized by comprising the following steps:
s1, receiving a reading instruction sent by the controller by the logistics label, wherein the reading instruction comprises a maximum value of a random number, and generating the random number which is not greater than the maximum value;
s2, monitoring wireless signals, and if the logistics label signals are monitored and effective wireless signals are not received, sending response signals, wherein the monitoring time of the logistics label is the shortest in all the current logistics labels, the logistics label is the logistics label which generates the smallest random number in the current round, and the monitoring time is the product of the generated random number and unit time;
s3, if other physical distribution labels monitor the response signal, quitting the wireless signal monitoring;
s4, the logistics label sending the response signal receives the response confirmation signal sent by the controller, and the reading instruction flow is quitted;
s5, the logistics label which does not send the reply signal repeats the steps S2-S4 until all the logistics labels send the reply signal and receive the reply confirmation signal sent by the controller.
2. The method of claim 1, wherein the random number maximum is equal to or approximately equal to the number of physical distribution tags receiving the read command.
3. The method for reading the batch logistics tag of claim 1 or 2 wherein the logistics tag communicates with the controller through Sub-1GHz wireless signals.
4. A logistics label system, comprising:
the reading instruction receiving unit is configured for receiving a reading instruction sent by the controller by the logistics label, wherein the reading instruction comprises a maximum value of the random number and generates the random number which is not greater than the maximum value;
the response signal transmitting unit: the system is configured to monitor wireless signals, and if the logistics label signal monitoring is finished and no effective wireless signal is received, a response signal is sent, the monitoring time of the logistics label is the shortest in the monitoring time of all the current logistics labels, the logistics label is the logistics label which generates the smallest random number in the current round, and the monitoring time is the product of the generated random number and unit time;
a response confirmation state receiving unit: the wireless signal monitoring is quitted if other logistics labels monitor the response signal;
the response confirmation signal receiving unit: configuring a logistics label for sending a response signal to receive a response confirmation signal sent by a controller, and quitting a reading instruction flow;
repeating unit: and repeating the round-going steps until all the logistics labels send response signals and receive response confirmation signals sent by the controller.
5. The logistics label system of claim 4, wherein the random number maximum generated by the read command receiving unit is the same or approximately the same as the number of logistics labels receiving the read command.
6. An apparatus, characterized in that the apparatus comprises:
one or more processors;
a memory for storing one or more programs,
the one or more programs, when executed by the one or more processors, cause the one or more processors to perform the method recited in any of claims 1-3.
7. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-3.
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| CN109299765B (en) * | 2018-10-31 | 2021-11-26 | 南方电网科学研究院有限责任公司 | Anti-collision method and device for radio frequency identification equipment of multiple internet of things and storage medium |
| CN109711490B (en) * | 2018-11-22 | 2020-06-05 | 北京三快在线科技有限公司 | Data reading method and device, electronic system and readable storage medium |
| CN113792839A (en) * | 2021-09-13 | 2021-12-14 | 重庆光能振亿科技有限公司 | Intelligent logistics label |
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| CN1845125A (en) * | 2006-05-18 | 2006-10-11 | 北京理工大学 | Anti-collision system and method for simultaneously reading multi label |
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