RFID control method and warehousing system

Abstract

The invention discloses an RFID control method and a warehousing system. The warehousing system comprises a handheld RFID reader, and the handheld RFID reader is provided with an antenna and a radio frequency module connected with the antenna; the radio frequency module is used for outputting a first radio frequency signal through the antenna and receiving a second radio frequency signal fed back by the tag through the antenna; the method comprises the following steps: switching the handheld RFID reader from a static state to a working state at a first time interval, and switching the handheld RFID reader to the static state after keeping the working state for a second time interval; the handheld RFID stops outputting the first radio frequency signal when in a static state, and outputs the first radio frequency signal when in a working state; obtaining the number of times that the radio frequency module receives a second radio frequency signal fed back by the tag through the antenna within the unit time length; setting a first duration and a second duration based on the number of times; wherein the number of times is inversely proportional to the first duration, and the number of times is directly proportional to the second duration. According to the invention, the power consumption of the handheld RFID reader in the warehousing system is reduced, and the actual cruising ability of the handheld RFID reader is improved.

Description

Technical Field

[0001] This application relates to the technical field of RIFD control systems, and particularly to an RFID control method and a warehousing system. Background Art

[0002] In a warehousing system, it is often necessary for staff to read the electronic tags of incoming goods and enter them into the warehousing system. For ease of operation, a handheld RFID reader is often used to read the electronic tags of goods. However, a handheld RFID reader is generally powered by a battery. Therefore, it is crucial to reduce the power consumption of the RFID to improve its actual battery life for staff use. Summary of the Invention

[0003] The main purpose of this application is to provide an RFID control method and a warehousing system, aiming to reduce the power consumption of the handheld RFID reader in the warehousing system and improve its actual battery life.

[0004] To achieve the above object, this application proposes an RFID control method applied to a warehousing system. The warehousing system includes a handheld RFID reader, and the handheld RFID reader has an antenna and a radio frequency module connected to the antenna; the radio frequency module is used to output a first radio frequency signal via the antenna, and is used to receive a second radio frequency signal fed back by a tag via the antenna; The method includes: Step S100: The handheld RFID reader switches from the static state to the working state every first time period, and switches to the static state after maintaining the working state for a second time period; wherein, when the handheld RFID is in the static state, it controls the radio frequency module to stop outputting the first radio frequency signal, and when in the working state, it controls the radio frequency module to output the first radio frequency signal; Step S200: Obtain the number of times the radio frequency module receives the second radio frequency signal fed back by the tag via the antenna per unit time; Step S300: Based on the number of times, set the first time period and the second time period; wherein, the number of times is inversely proportional to the first time period, and the number of times is directly proportional to the second time period.

[0005] Optionally, the sum of the first time period and the second time period is a constant cycle time period; the unit time is greater than the cycle time period.

[0006] Optionally, the step S300: Based on the number of times, set the first time period and the second time period includes: Step S310: In the case where the number of times is zero, set the first time period and the second time period based on the cycle time period, so that the ratio of the first time period to the second time period is 9 to 1; Step S320: When the number of times is not zero and is within the first number range, set the first duration and the second duration based on the cycle duration, so that the ratio of the first duration to the second duration is 7:3; Step S330: When the number of times is not zero and is within the second number range, set the first duration and the second duration based on the cycle duration, so that the ratio of the first duration to the second duration is 5:5; Step S340: When the number of times is not zero and is within the third number range, set the first duration and the second duration based on the cycle duration, so that the ratio of the first duration to the second duration is 3:7; wherein, the minimum value of the third number range is greater than the maximum value of the second number range, and the minimum value of the second number range is greater than the maximum value of the first number range.

[0007] Optionally, the step of setting the first duration and the second duration based on the cycle duration so that the ratio of the first duration to the second duration is 7:3 when the number of times is not zero and is within the first number range further includes: When the number of times within each of the N consecutive unit durations is not zero and is within the first number range, set the first duration and the second duration based on the cycle duration, so that the ratio of the first duration to the second duration is 5:5; where N is greater than or equal to 3.

[0008] Optionally, the handheld RFID reader further has a holding part; the step S310 of setting the first duration and the second duration based on the cycle duration so that the ratio of the first duration to the second duration is 9:1 when the number of times is zero further includes: Step S311: When the number of times is zero, the handheld RFID reader obtains the held state of its own holding part. Step S312: When it is determined that the holding part of the handheld RFID reader has switched from never being held to being held, if the current handheld RFID reader is in a static state, after delaying for a third duration, it switches from the static state to the working state and maintains the working state for a second duration and then switches back to the static state; wherein, the third duration is less than the first duration. Step S313: When it is determined that the holding part of the handheld RFID reader has changed from never being held to being held, maintain the current state.

[0009] Optionally, step S312, when it is determined that its own holding part has switched from never being held to being held, if the current handheld RFID reader is in a static state, after a third time period has elapsed, switch from the static state to the working state, maintain the working state for a second time period, and then switch to the static state, includes: Step S3121, obtain the motion state of the user; Step S3122, when the user switches from a moving state to a stopped moving state and it is determined that its own holding part has switched from never being held to being held, if the current handheld RFID reader is in a static state, after a third time period has elapsed, switch from the static state to the working state, maintain the working state for a second time period, and then switch to the static state.

[0010] Optionally, the handheld RFID reader also has an identification end. When the handheld RFID reader receives the second radio frequency signal fed back by the tag, the identification end is arranged facing the tag; the handheld RFID reader presets a first power range and a second power range; wherein, the minimum value of the second power range is greater than the maximum value of the first power range; the method further includes: Step S400, when the handheld RFID reader determines that its own holding part is held, obtain its own motion information; Step S500, when it is determined based on the motion information that there is a trend of moving in the direction pointed by the identification end, control the radio frequency module to switch to the working state and maintain it for a second time period, and control the power of the radio frequency module to switch from being in the first power range to being in the second power range.

[0011] Optionally, step S500, controlling the power of the radio frequency module to switch from being in the first power range to being in the second power range includes: Step S510, control the power of the radio frequency module to switch from being in the first power range to the minimum value of the second power range; Step S520, when it is determined based on its own motion information that there is still a trend of moving in the direction pointed by the identification end and no second radio frequency signal fed back by the tag is received by the antenna within a fourth time period, control the power of the radio frequency module to increase by a preset power increment every first interval time from the minimum value of the second power range until the maximum value of the second power range is reached or a second radio frequency signal fed back by the tag is received by the antenna.

[0012] Optionally, when it is determined based on the motion information that there is a trend of moving in the direction pointed by the identification end, controlling the radio frequency module to switch to the working state further includes: When it is determined based on the motion information that the device is moving alternately in a trending motion towards the direction pointed by the recognition end and a trending motion towards the opposite direction of the direction pointed by the recognition end, control the power of the RF module to remain within the first power range.

[0013] This application also proposes a warehousing system, which includes a handheld RFID reader. The handheld RFID reader includes a control device, an antenna, and an RF module connected to the antenna; Among them, the control device includes a memory, a processor, and the RFID control method as described in any one of the above stored on the memory and executable on the processor.

[0014] The RFID control method of this application includes: the handheld RFID reader switches from the static state to the working state at intervals of a first duration, and switches to the static state after maintaining the working state for a second duration; obtains the number of times the RF module receives the second RF signal fed back by the tag via the antenna per unit duration; then based on the number of times, sets the first duration and the second duration; where the number of times is inversely proportional to the first duration, and the number of times is directly proportional to the second duration. In this way, in practical applications, the handheld RFID reader of this application will adaptively adjust the duration of the static state and the duration of the working state according to the current frequency of reading electronic tags, that is, the number of times of reading electronic tags per unit duration, so that when the frequency of reading electronic tags is lower, the duration of the handheld RFID reader in the static state is longer, thereby effectively reducing power consumption and improving the actual battery life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with this application, and are used together with the description to explain the principles of this application.

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic flowchart of an embodiment of the RFID control method of this application; Figure 2 It is a schematic flowchart of another embodiment of the RFID control method of this application; Figure 3 It is a schematic flowchart of yet another embodiment of the RFID control method of this application; Figure 4Schematic flowchart of still another embodiment of the RFID control method of the present application; Figure 5 Schematic flowchart of yet another embodiment of the RFID control method of the present application.

[0018] The implementation, functional features, and advantages of the present application will be further described in conjunction with embodiments with reference to the accompanying drawings. Specific Embodiments

[0019] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0020] To better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. It should be understood that although the steps in the flowcharts in the embodiments of the present application are displayed in sequence according to the indications of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless clearly stated in this application, the execution of these steps has no strict order limit and can be executed in other orders.

[0022] In a warehousing system, it is often necessary for staff to read the electronic tags of incoming goods and enter them into the warehousing system. For ease of operation, a handheld RFID reader is often used to read the electronic tags of goods. However, a handheld RFID reader is generally powered by a battery. Therefore, reducing the power consumption of the RFID to improve its actual battery life is crucial for staff to use.

[0023] For this reason, the present application proposes an RFID control method applied to a warehousing system. The warehousing system includes a handheld RFID reader, and the handheld RFID reader has an antenna and a radio frequency module connected to the antenna; the radio frequency module is used to output a first radio frequency signal through the antenna and to receive a second radio frequency signal fed back by the tag through the antenna.

[0024] It can be understood that a control device can also be provided in the RFID reader. The control device is electrically connected to the radio frequency module and is used to store and execute the following RFID control method. Among them, the control device can be implemented by a controller, such as an MCU, a DSP (Digital Signal Process, digital signal processing chip), an FPGA (Field Programmable Gate Array, programmable logic gate array chip), a PLC, an SOC (System On Chip, system-level chip), etc. When the RFID reader is in a static state, the control device will control the radio frequency module to stop outputting the first radio frequency signal. When the RFID reader is in a working state, the control device will control the radio frequency module to output the first radio frequency signal; the first radio frequency signal output by the radio frequency module will be received by the electronic tag and the electronic tag will feedback a second radio frequency signal to the RFID reader. After the control device receives the second radio frequency signal through the radio frequency module and the antenna, it can obtain the information in the current electronic tag and store it or upload it to the external terminal of the warehousing system through its own communication module.

[0025] Reference Figure 1 , this application proposes an RFID control method, and the method includes: Step S100, the handheld RFID reader switches from the static state to the working state every first time period, and switches to the static state after maintaining the working state for a second time period; wherein, when the handheld RFID is in the static state, it controls the radio frequency module to stop outputting the first radio frequency signal, and when in the working state, it controls the radio frequency module to output the first radio frequency signal; Step S200, obtain the number of times the radio frequency module receives the second radio frequency signal fed back by the tag through the antenna per unit time; Step S300, based on the number of times, set the first time period and the second time period; wherein, the number of times is inversely proportional to the first time period, and the number of times is directly proportional to the second time period.

[0026] In this embodiment, the control device will control the radio frequency module to switch between outputting the first radio frequency signal and stopping outputting the first radio frequency signal. Specifically, the control device first controls the radio frequency module to output the first radio frequency signal and maintain it for a second time period (set by the R & D personnel), and then after the second time period, controls the radio frequency module to stop outputting the first radio frequency signal and maintain it for a first time period (set by the R & D personnel), and then controls the radio frequency module to output the first radio frequency signal and maintain it for a second time period, and so on.

[0027] Among them, the unit duration can be set by the R & D personnel according to requirements. Optionally, in an embodiment, the sum of the first duration and the second duration is a constant cycle duration; the unit duration is greater than the cycle duration (set by the R & D personnel). In this way, it is convenient for the control device to set the first duration and the second duration, and the unit duration is greater than the cycle duration, so that sufficient accurate data can be obtained during the reading process, thereby effectively improving the judgment of the control device on the number of electronic tags to be read currently.

[0028] It can be understood that if the number of times within the unit duration is more, it means that more electronic tags need to be read currently, and the frequency of performing the reading action is higher. Then at this time, the control device will shorten the first duration more and increase the second duration more, so as to increase the duration when the radio frequency module outputs the first radio frequency signal, that is, the duration of performing the reading action. Similarly, if the number of times within the unit duration is less, it means that fewer electronic tags need to be read currently, and the frequency of performing the reading action is less. Then at this time, the control device will think that the user does not have the need to use the handheld RFID reader multiple times, and will increase the first duration more and shorten the second duration more, so as to shorten the duration when the radio frequency module stops outputting the first radio frequency signal, that is, the duration of performing the reading action, in order to minimize the power consumption as much as possible.

[0029] Optionally, when the control device adjusts the first duration and the second duration, it can be adjusted by a fixed value. For example, increase / decrease the first duration by a fixed value, and increase / decrease the second duration by a fixed value.

[0030] Optionally, based on the fact that the sum of the first duration and the second duration is a constant cycle duration, the control device will also adjust the duration changes of the two by setting the ratio of the first duration and the second duration. In an embodiment, the step S300, setting the first duration and the second duration based on the number of times includes: Step S310, when the number of times is zero, set the first duration and the second duration based on the cycle duration, so that the ratio of the first duration to the second duration is 9 to 1; Step S320, when the number of times is not zero and is within the first number range, set the first duration and the second duration based on the cycle duration, so that the ratio of the first duration to the second duration is 7 to 3; Step S330, when the number of times is not zero and is within the second number range, set the first duration and the second duration based on the cycle duration, so that the ratio of the first duration to the second duration is 5 to 5; Step S340: When the number is not zero and falls within the third number range, set the first duration and the second duration based on the cycle duration such that the ratio of the first duration to the second duration is 3:7; wherein, the minimum value of the third number range is greater than the maximum value of the second number range, and the minimum value of the second number range is greater than the maximum value of the first number range.

[0031] In this embodiment, the control device matches the corresponding number range according to the number of second radio frequency signals fed back by the electronic tag obtained within the unit duration (wherein, the first number range, the second number range, and the third number range are set by the R & D personnel. It can be understood that the minimum value of the first number range is greater than or equal to 1), and then sets the ratio of the corresponding first duration and second duration according to the determined number range. With such a setting, the control device can match the corresponding ratio relationship between the first duration and the second duration based on the number, so as to minimize the power consumption as much as possible when the number is low, thereby improving the actual battery life of the device.

[0032] The RFID control method of the present application includes: the handheld RFID reader switches from the static state to the working state every first duration, and switches to the static state after maintaining the working state for the second duration; obtains the number of second radio frequency signals fed back by the tag received by the radio frequency module via the antenna within the unit duration; then sets the first duration and the second duration based on the number; wherein, the number is inversely proportional to the first duration, and the number is directly proportional to the second duration. Thus, in practical applications, the handheld RFID reader of the present application adaptively adjusts the duration of the static state and the working state according to the current frequency of reading the electronic tag, that is, the number of times of reading the electronic tag within the unit duration, so that when the frequency of reading the electronic tag is lower, the duration of the handheld RFID reader in the static state is longer, thereby effectively reducing the power consumption and improving the actual battery life of the device.

[0033] It should be understood that, as can be seen from the content of the above embodiment, when the number is not zero and falls within the first number range within the unit duration, the control device sets the first duration and the second duration based on the cycle duration such that the ratio of the first duration to the second duration is 7:3. However, in actual situations, although there are many goods to be read with electronic tags, due to the large size and weight of the goods, or inconvenient handling, the speed of entering the warehouse is very slow, which also causes the number within the unit duration to fall within the first number range. In this case, it is possible that when the user reads the electronic tag each time, the user may encounter the situation that the tag cannot be read immediately for the first time and needs to wait. With a relatively large number of repetitions, the user will also feel inconvenient to use.

[0034] To this end, based on the embodiment in which the sum of the first duration and the second duration is a constant cycle duration, in an embodiment of the present application, when the number is not zero and the number is within the first number interval, setting the first duration and the second duration based on the cycle duration so that the ratio of the first duration to the second duration is 7 to 3 also includes: When the number of times in each of N consecutive unit time lengths is not zero and is within the first number interval, the first time length and the second time length are set based on the cycle time length so that the ratio of the first time length to the second time length is 5 to 5; wherein N is greater than or equal to 3.

[0035] In this embodiment, if the control device obtains the second radio frequency signal sent by the electronic tag a certain number of times within at least three consecutive unit time periods, and the number of times is within the first number interval, it will be determined that the current user has an actual need to continuously read multiple goods, so the first time period and the second time period are generally set based on the cycle time, so that the ratio of the first time period to the second time period is 5:5, so that every time the user brings the handheld RFID reader close to the electronic tag, the handheld RFID reader can be in a working state with a high probability and read the current electronic tag, thereby effectively improving the convenience of user use.

[0036] It should be understood that, from the above content, when the number is zero, most of the duration in a cycle will be the first duration. Then, when the user is about to start reading the electronic tag of the first item, the handheld RFID reader is likely to be in a static state and not respond, which will mislead the user and make the user mistakenly believe that the current RFID reader is faulty.

[0037] To this end, based on the above embodiment in which the sum of the first duration and the second duration is a constant cycle duration, in one embodiment of the present application, reference is made to Figure 2 - Figure 3 The handheld RFID reader further comprises a holding portion; the step S310, when the number of times is zero, setting the first duration and the second duration based on the cycle duration so that the ratio of the first duration to the second duration is 9 to 1, further comprises: Step S311: when the number of times is zero, the handheld RFID reader obtains the holding state of its own holding part; Step S312: when it is determined that the holding part of the handheld RFID reader is switched from the unheld state to the held state, if the handheld RFID reader is currently in a static state, after a third time delay, the handheld RFID reader is switched from the static state to the working state and maintained in the working state for a second time delay before switching back to the static state; wherein the third time delay is less than the first time delay; Step S313: When it is determined that the holding part of itself has never been held and then is held, maintain the current state.

[0038] In this embodiment, a metal sheet may be provided on the holding part of the handheld RFID reader, and the metal sheet may be connected to the holding sensor. The holding sensor may adopt a capacitive holding sensor to detect the capacitance change on the metal sheet and output the result to the control device; alternatively, the holding sensor may also be implemented by a pressure holding sensor to detect the pressure change on the metal sheet and output the result to the control device. The control device may determine whether the current holding part is grasped by the user based on the result output by the holding sensor. It can be understood that for a handheld RFID reader, a user generally places it in a backpack or hangs it on the waist belt, and takes it out for use when needed. Therefore, when the control device determines that the holding part of itself has never been held and then switches to the held state, if the current handheld RFID reader is in a static state, it will switch from the static state to the working state after a third time delay (to leave enough time for the user to bring the handheld RFID reader close to the electronic tag of the goods), and switch to the static state after maintaining the working state for a second time period; where the third time period is less than the first time period. In this way, when the user is just about to start reading the electronic tag of the first good, the handheld RFID reader is likely to be in the working state, so that it can quickly respond to read the electronic tag, effectively improving the convenience of user use.

[0039] In addition, it can be understood that when it is determined that the holding part of itself has never been held and then is held, the handheld RFID reader will maintain the current state.

[0040] It should be understood that in actual situations, it is possible that the user holds the RFID reader and moves all the way, which may cause misjudgment of the handheld RFID reader, resulting in unnecessary power consumption.

[0041] For this reason, referring to Figure 3 , based on the embodiment where the sum of the above first time period and the second time period is a constant cycle time period, in an embodiment of the present application, the step S312: When it is determined that the holding part of itself has never been held and then switches to the held state, if the current handheld RFID reader is in a static state, then after a third time delay, switch from the static state to the working state and switch to the static state after maintaining the working state for a second time period includes: Step S3121: Obtain the action state of the user; Step S3122: When the user switches from the moving state to the stopped state and it is determined that the holding part has never been held and then switches to the held state, if the current handheld RFID reader is in the static state, after a third time period has elapsed, it switches from the static state to the working state, maintains the working state for a second time period, and then switches back to the static state.

[0042] In this embodiment, the control device can obtain the user's action state through the RFID reader based on motion detection sensors in the handheld RFID reader, such as an accelerometer, a gyroscope, etc. For example, if the control device identifies from the motion information that the handheld RFID reader moves back and forth in two directions, it will determine that the user is only holding the device and the device swings naturally with the arm while walking, and there is no need to use the device to read the electronic tag. If it is identified that the RFID reader is moving in a single direction or is not moving, it is determined that the user is in the stopped state.

[0043] Optionally, in another embodiment, the control device can also obtain its own position parameters based on the position sensor in the handheld RFID reader. If it is determined based on the position parameters that the handheld RFID reader is in the moving state, the moving distance is greater than a certain distance (preset by the R & D personnel), and the holding part is held, then it can be determined that the user is moving while holding the handheld RFID reader. If it is determined based on the position parameters that the handheld RFID reader is in the moving state and the moving distance is less than a certain distance, or is in the stationary state, then it is determined that the user is in the stopped state.

[0044] When it is determined that the user switches from the moving state to the stopped state and it is determined that the user still holds the handheld RFID reader, the control device will determine that the current user has a usage requirement, and then perform the above action of switching from the static state to the working state after a third time period has elapsed, maintaining the working state for a second time period, and then switching back to the static state, so as to facilitate the user to start reading the first electronic tag. In this way, through the above settings, the unnecessary power consumption of the handheld RFID reader is effectively reduced, and its actual battery life is improved.

[0045] It should be understood that in actual situations, when a user uses an RFID reader to read an electronic tag in a warehousing system, sometimes due to the excessive height of the goods or the deep placement position of the goods, it is often difficult for the user to directly read the electronic tag of the goods with the RFID reader, and the user will reach out to bring the RFID reader closer to the goods with the electronic tag to be read. From the above content, when the number of times within a unit time is 0, that is, when no electronic tag has been read yet, the RFID reader is in a static state where it stops outputting the first radio frequency signal for most of the cycle duration. This is more likely to cause the user to think that the distance is not close enough and need to reach the RFID reader further towards the goods, bringing a lot of inconvenience to the user's operation.

[0046] Therefore, referring to Figure 4 , based on the embodiment where the sum of the above first duration and the second duration is a constant cycle duration, in an embodiment of the present application, the handheld RFID reader further has an identification end, and when the handheld RFID reader receives the second radio frequency signal fed back by the tag, the identification end is set towards the tag; the handheld RFID reader presets a first power range and a second power range; wherein, the minimum value of the second power range is greater than the maximum value of the first power range; the method further includes: Step S400, when the handheld RFID reader determines that its holding part is held, obtain its own motion information; Step S500, when determining the trend motion of itself towards the direction pointed by the identification end based on the motion information, control the radio frequency module to switch to the working state and maintain it for the second duration, and control the power of the radio frequency module to switch from being within the first power range to being within the second power range.

[0047] In this embodiment, the control device can identify whether the holding part of the handheld RFID itself is held by the user in the same manner as in the above embodiment, which will not be elaborated here. When the control device determines that the user is holding the holding part of the RFID reader, it will obtain its own motion information through the motion detection sensors in the RFDI reader, such as gyroscopes, accelerometers, Hall elements, etc. It can be understood that when the user wants to reach for a relatively distant item with the RFID reader, the recognition end will surely face the item and move closer to the electronic tag on the item. Therefore, when the control device determines a trending motion in the direction pointed by the recognition end based on the motion information, it will judge that the current user has the action tendency of holding the handheld RFID reader and approaching the electronic tag on a relatively distant item from himself. At this time, if the RFID reader is in a static state, the control device will immediately control the RFID to switch to the working state and maintain it for a second duration, that is, the control device will control the radio frequency module to start outputting the first radio frequency signal, so that the RFID reader can read the electronic tag at this time.

[0048] Meanwhile, to facilitate the user to read the electronic tag on a relatively distant item through the handheld RFID reader, the control device will also control the radio frequency module to increase the working power, such as increasing the amplitude of the output first radio frequency signal, to increase the signal strength of the first radio frequency signal, so as to increase its transmission distance after being output through the antenna. Among them, the control device will control the power of the radio frequency module to switch from being in the first power range (set by the R & D personnel) to being in the second power range (set by the R & D personnel), so that the RFID reader can read the relatively distant electronic tag faster at this time, effectively improving the convenience of user use.

[0049] Furthermore, to further reduce power consumption and effectively ensure the actual battery life of the handheld RFID reader. Refer to Figure 5 , in an embodiment of the present application, the step S500 of controlling the power of the radio frequency module to switch from being in the first power range to being in the second power range includes: Step S510: Control the power of the radio frequency module to switch from being in the first power range to the minimum value of the second power range; Step S520: When it is determined based on its own motion information that it is still trending in the direction pointed by the recognition end and no second radio frequency signal is received through the antenna within the fourth duration, control the power of the radio frequency module to increase the preset power increment every first interval duration from the minimum value of the second power range until reaching the maximum value of the second power range or receiving the second radio frequency signal feedback through the antenna.

[0050] In this embodiment, in order to minimize power consumption, the control device will not switch to a high power at the first time when increasing the power of the radio frequency module, but will increase it to the minimum value of the second power range. If the need to read the electronic tag at a longer distance can be met at this time, the control device will stop controlling the power increase of the radio frequency module to minimize power consumption. If the control device has not received the second radio frequency signal fed back by the electronic tag at this time, and it is judged that the user is still holding the handheld RFID reader and approaching the goods, then the power of the radio frequency module will be controlled to increase the preset power increase value from the minimum value of the second power range every first interval (the first interval and the preset power increase value are preset in advance by the R&D personnel) until the maximum value of the second power range is reached or the second radio frequency signal fed back by the tag is received via the antenna. In this way, when the RFID reader needs to work at a higher power to meet the working requirements, the power consumption is reduced as much as possible, thereby indirectly improving the actual endurance of the RFID. It is understandable that if the second feedback signal is still not received when the maximum value of the second power range is reached, the handheld RFID reader will directly return to the static state and prompt the user that the distance is too far, and the ratio of the first duration to the second duration will be adjusted back to 9 to 1, and the control device will directly control the power of the RF module to be within the first power range.

[0051] In addition, it should be understood that in actual situations, the user may swing the handheld RFID reader back and forth while holding it, which may easily cause misjudgment of the control device, thereby performing the above-mentioned erroneous operation of increasing the power of the RF module, resulting in increased power consumption and reduced battery life of the handheld RFID reader. To this end, in another embodiment of the present application, when the user determines the trend of movement in the direction pointed by the identification terminal based on the motion information, controlling the RF module to switch to the working state also includes: Based on the motion information, when it is determined that the RFID reader is moving alternately in the direction pointed by the identification end and in the direction opposite to the direction pointed by the identification end, the power of the RF module is controlled to remain in the first power range. In this way, when the control device recognizes that the RFID reader is only swung back and forth by the user based on the motion information, it determines that the user does not need to read the electronic tags of distant goods at this time, and then sets the RFID reader to remain in the first power range, and controls the RF module according to the ratio of the first duration to the second duration of 9 to 1, so as to minimize the power consumption of the handheld RFID.

[0052] The present application also provides a warehousing system, which includes a handheld RFID reader. The handheld RFID reader includes a control device, an antenna, and a radio frequency module connected to the antenna. Among them, the control device includes a memory, a processor, and the RFID control method as described in any one of the above on the memory and executable on the processor.

[0053] It should be noted that since the warehousing system of the present application includes the above RFID control method, the warehousing system of the present application also includes all embodiments of the above RFID control method and the effects brought by each embodiment, which will not be elaborated here.

[0054] The above are only partial embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the specification and drawings of the present application under the technical concept of the present application, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A RFID control method, characterized in that: Applied to a warehousing system, the warehousing system comprises a handheld RFID reader, the handheld RFID reader comprises an antenna and a radio frequency module connected to the antenna; The radio frequency module is used to output a first radio frequency signal via the antenna, and is used to receive a second radio frequency signal fed back by the tag via the antenna; The method comprises: Step S100, the handheld RFID reader switches from a static state to a working state at intervals of a first time length, and switches back to a static state after maintaining the working state for a second time length; wherein the handheld RFID reader controls the radio frequency module to stop outputting the first radio frequency signal when in the static state, and controls the radio frequency module to output the first radio frequency signal when in the working state; Step S200, obtaining the number of times the RF module receives the second RF signal fed back by the tag via the antenna within a unit time length; Step S300: based on the number of times, setting the first duration and the second duration; wherein the number of times is inversely proportional to the first duration, and the number of times is directly proportional to the second duration.

2. The RFID control method according to claim 1, characterized in that: The sum of the first duration and the second duration is a constant cycle duration; and the unit duration is greater than the cycle duration.

3. The RFID control method according to claim 2, characterized in that: The step S300, setting the first duration and the second duration based on the number of times, includes: Step S310: when the number of times is zero, setting the first duration and the second duration based on the cycle duration so that the ratio of the first duration to the second duration is 9 to 1; Step S320: when the number is not zero and is within the first number interval, setting the first duration and the second duration based on the cycle duration so that the ratio of the first duration to the second duration is 7 to 3; Step S330: when the number is not zero and is in the second number interval, setting the first duration and the second duration based on the cycle duration so that the ratio of the first duration to the second duration is 5:5; Step S340: When the number of times is not zero and is in the third number interval, the first duration and the second duration are set based on the cycle duration so that the ratio of the first duration to the second duration is 3 to 7; wherein the minimum value of the third number interval is greater than the maximum value of the second number interval, and the minimum value of the second number interval is greater than the maximum value of the first number interval.

4. The RFID control method according to claim 3, characterized in that: When the number is not zero and is within the first number interval, setting the first duration and the second duration based on the cycle duration so that the ratio of the first duration to the second duration is 7 to 3 also includes: When the number of times in each of N consecutive unit time lengths is not zero and is within the first number interval, the first time length and the second time length are set based on the cycle time length so that the ratio of the first time length to the second time length is 5 to 5; wherein N is greater than or equal to 3.

5. The RFID control method according to claim 4, characterized in that: The handheld RFID reader further comprises a holding portion; the step S310, when the number of times is zero, setting the first duration and the second duration based on the cycle duration so that the ratio of the first duration to the second duration is 9 to 1, further comprises: Step S311: when the number of times is zero, the handheld RFID reader obtains the holding state of its own holding part; Step S312: when it is determined that the holding part of the handheld RFID reader is switched from the unheld state to the held state, if the handheld RFID reader is currently in a static state, after a third time delay, the handheld RFID reader is switched from the static state to the working state and maintained in the working state for a second time delay before switching back to the static state; wherein the third time delay is less than the first time delay; Step S313: When it is determined that the holding part of the device changes from being unheld to being held, the current state is maintained.

6. The RFID control method according to claim 5, characterized in that: The step S312, in the case of determining that the holding part of the handheld RFID reader is switched from the unheld state to the held state, if the handheld RFID reader is currently in the static state, then after a delay of a third time period, switching from the static state to the working state and maintaining the working state for a second time period before switching to the static state includes: Step S3121, obtaining the user's action status; Step S3122: When the user switches from a moving state to a stopped moving state and determines that his or her holding part has switched from an unheld state to a held state, if the current handheld RFID reader is in a static state, then after a delay of a third time period, it switches from the static state to the working state and maintains the working state for a second time period before switching back to the static state.

7. The RFID control method according to claim 6, characterized in that: The handheld RFID reader further has an identification end, and when the handheld RFID reader receives a second radio frequency signal fed back by the tag, the identification end is set toward the tag; the handheld RFID reader is preset with a first power range and a second power range; wherein the minimum value of the second power range is greater than the maximum value of the first power range; the method further includes: Step S400: The handheld RFID reader obtains its own movement information when determining that its holding part is held; Step S500: When it is determined based on the motion information that the device is moving in the direction pointed by the identification end, the RF module is controlled to switch to a working state and maintain the state for a second time period, and the power of the RF module is controlled to switch from the first power range to the second power range.

8. The RFID control method according to claim 7, characterized in that: The step S500 of controlling the power of the radio frequency module to switch from being within the first power range to being within the second power range includes: Step S510: Control the power of the RF module to switch from the first power range to the minimum value of the second power range; Step S520: Based on its own motion information, when it is determined that it is still moving in the direction pointed by the identification end and the second RF signal fed back by the tag is still not received through the antenna within a fourth time period, the power of the RF module is controlled to increase from the minimum value of the second power range by a preset power increase value every first interval time period until the maximum value of the second power range is reached or the second RF signal fed back by the tag is received through the antenna.

9. The RFID control method according to claim 7, characterized in that: When it is determined based on the motion information that the device is moving in the direction pointed by the identification terminal, controlling the radio frequency module to switch to the working state further includes: When it is determined based on the movement information that the device moves alternately in a trend movement toward the direction pointed by the identification end and in a trend movement in the opposite direction to the direction pointed by the identification end, the power of the radio frequency module is controlled to remain in the first power range.

10. A storage system, characterized in that: The system includes a handheld RFID reader, which includes a control device, an antenna, and a radio frequency module connected to the antenna; The control device comprises a memory, a processor, and the RFID control method according to any one of claims 1 to 9 which is stored in the memory and can be run on the processor.

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