Rfid control method and warehousing system

Abstract

The application discloses an RFID control method and a warehousing system. The warehousing system comprises a handheld RFID reader, the handheld RFID reader has 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 a label through the antenna; the method comprises the following steps: the handheld RFID reader is switched from a static state to a working state every first time length, and is switched to the static state after being kept in the working state for a second time length; the handheld RFID stops outputting the first radio frequency signal when being in the static state, and outputs the first radio frequency signal when being in the working state; the number of times that the radio frequency module receives the second radio frequency signal fed back by the label through the antenna in a unit time length is acquired; the first time length and the second time length are set based on the number of times; wherein the number of times is inversely proportional to the first time length, and the number of times is proportional to the second time length. The application aims to reduce the power consumption of the handheld RFID reader in the warehousing system and improve the actual endurance of the handheld RFID reader.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of RIFD control systems, and particularly to an RFID control method and a warehousing system. BACKGROUND

[0002] In a warehousing system, it is often necessary for a staff member to read the electronic tag of incoming goods and enter the warehousing system. In order to facilitate operation, a handheld RFID reader is often used to read the electronic tag of the goods. However, the handheld RFID reader is generally powered by a battery, so it is crucial for the staff member to use to reduce the power consumption of the RFID and improve its actual endurance. SUMMARY

[0003] The main purpose of the present application is to provide an RFID control method and a warehousing system, which aims to reduce the power consumption of the handheld RFID reader in the warehousing system and improve its actual endurance.

[0004] To achieve the above purpose, the present application provides an RFID control method applied to a warehousing system, the warehousing system comprising a handheld RFID reader, the handheld RFID reader having an antenna and a radio frequency module connected with the antenna; the radio frequency module is used to output a first radio frequency signal through the antenna, and is used to receive a second radio frequency signal fed back by a tag through the antenna;

[0005] The method comprises:

[0006] Step S100, the handheld RFID reader switches from a static state to a working state every first time length, and switches to the static state after maintaining the working state for a second time length; wherein the handheld RFID 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;

[0007] Step S200, the number of times that the radio frequency module receives the second radio frequency signal fed back by the tag through the antenna within a unit time length is obtained;

[0008] Step S300, based on the number of times, the first time length and the second time length are set; wherein the number of times is inversely proportional to the first time length, and the number of times is proportional to the second time length.

[0009] Optionally, the sum of the first time length and the second time length is a constant period length; the unit time length is greater than the period length.

[0010] Optionally, the step S300, based on the number of times, setting the first time length and the second time length comprises:

[0011] In a case where the number of times is zero, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 9:1.

[0012] In a case where the number of times is not zero and the number of times is in a first number of times interval, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 7:3.

[0013] In a case where the number of times is not zero and the number of times is in a second number of times interval, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 5:5.

[0014] In a case where the number of times is not zero and the number of times is in a third number of times interval, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 3:7; wherein a minimum value of the third number of times interval is greater than a maximum value of the second number of times interval, and a minimum value of the second number of times interval is greater than a maximum value of the first number of times interval.

[0015] Optionally, the case where the number of times is not zero and the number of times is in the first number of times interval, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 7:3 further comprises:

[0016] In a case where the number of times in each of N continuous unit time lengths is not zero and the number of times is in the first number of times interval, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 5:5; wherein N is greater than or equal to 3.

[0017] Optionally, the handheld RFID reader further has a holding portion; and the step S310, in a case where the number of times is zero, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 9:1 further comprises:

[0018] In a case where the number of times is zero, the handheld RFID reader acquires a held state of the holding portion of the handheld RFID reader.

[0019] In a case where it is determined that the holding portion of the handheld RFID reader switches from an unheld state to a held state, if the handheld RFID reader is currently in a static state, the handheld RFID reader switches from the static state to a working state after a third time length, and switches to the static state after maintaining the working state for a second time length; wherein the third time length is less than the first time length.

[0020] Step S313, in the case of determining that the holding part of the self is never held to be held, the current state is maintained.

[0021] Optionally, the step S312, in the case of determining that the holding part of the self is never held to be held, if the current handheld RFID reader is in the static state, after delaying for a third time length, switching from the static state to the working state and maintaining the working state for a second time length and then switching to the static state comprises:

[0022] Step S3121, obtaining the action state of the user;

[0023] Step S3122, in the case of determining that the holding part of the self is never held to be held, if the current handheld RFID reader is in the static state, after delaying for a third time length, switching from the static state to the working state and maintaining the working state for a second time length and then switching to the static state.

[0024] Optionally, the handheld RFID reader further has an identification end, when the handheld RFID reader receives the second radio frequency signal feedback by the tag, the identification end is arranged towards the tag; the handheld RFID reader is pre-set 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 comprises:

[0025] Step S400, in the case of determining that the holding part of the self is held, obtaining the motion information of the self;

[0026] Step S500, when determining that the self has a trend of moving towards the direction in which the identification end points, controlling the radio frequency module to switch to the working state and maintain for a second time length, and controlling the power of the radio frequency module to switch from being in the first power range to being in the second power range.

[0027] Optionally, the 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 comprises:

[0028] Step S510, controlling 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;

[0029] In step S520, when the self is still in the trend of moving towards the direction pointed by the identification end and the second radio frequency signal feedback by the tag is not received by the antenna within the fourth time length, the power of the radio frequency module is controlled to increase by a preset power increase value every first interval time length from the minimum value of the second power range until the maximum value of the second power range is reached or the second radio frequency signal feedback by the tag is received by the antenna.

[0030] Optionally, when the self is in the trend of moving towards the direction pointed by the identification end based on the motion information, the control of the radio frequency module to switch to the working state further comprises:

[0031] When the self is in the trend of moving towards the direction pointed by the identification end and the trend of moving towards the opposite direction of the direction pointed by the identification end are alternately moved based on the motion information, the power of the radio frequency module is controlled to remain in the first power range.

[0032] The present application also proposes a warehousing system, the system comprising a handheld RFID reader, the handheld RFID reader comprising a control device, an antenna and a radio frequency module connected with the antenna;

[0033] The control device comprises a memory, a processor and an RFID control method as claimed in any one of the preceding claims stored on the memory and executable on the processor.

[0034] The RFID control method comprises that the handheld RFID reader switches from a static state to a working state every first time length and switches to the static state after remaining in the working state for a second time length; the number of times that the second radio frequency signal feedback by the tag is received by the antenna of the radio frequency module within a unit time length is acquired; and then the first time length and the second time length are set based on the number of times; wherein the number of times is inversely proportional to the first time length and the number of times is proportional to the second time length. In this way, in actual application, the handheld RFID reader of the present application will adaptively adjust the time length of the static state and the time length of the working state according to the current reading frequency of the electronic tag, i.e. the number of times that the electronic tag is read within a unit time, so as to realize that the longer the handheld RFID reader remains in the static state when the reading frequency of the electronic tag is lower, thereby effectively reducing the power consumption and improving the actual endurance of the device. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0037] Figure 1 Flowchart of an embodiment of the RFID control method of the present application;

[0038] Figure 2 Flowchart of another embodiment of the RFID control method of the present application;

[0039] Figure 3 Flowchart of still another embodiment of the RFID control method of the present application;

[0040] Figure 4 Flowchart of yet another embodiment of the RFID control method of the present application;

[0041] Figure 5 Flowchart of still another embodiment of the RFID control method of the present application.

[0042] The purposes, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0043] It should be understood that the specific embodiments described herein merely serve to explain the technical solutions of the present application, and are not used to limit the present application.

[0044] In order to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of protection of the present application.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly. It should be understood that although the steps in the flowchart in the embodiments of the present application are displayed in sequence according to the arrow indications, these steps are not necessarily executed in sequence according to the arrow indications. Unless explicitly stated in this document, the execution of these steps has no strict sequence limitation, and they can be executed in other sequences.

[0046] In a warehouse system, it is often necessary for workers to read the electronic tags of incoming goods and enter the warehouse system. In order to facilitate operation, a handheld RFID reader is often used to read the electronic tags of goods. However, the handheld RFID reader is generally powered by a battery, so it is crucial for workers to use to reduce the power consumption of the RFID to improve its actual endurance.

[0047] To this end, the present application provides an RFID control method, applied to a warehouse system, the warehouse system comprising a handheld RFID reader, the handheld RFID reader having an antenna and a radio frequency module connected to the antenna; the radio frequency module is configured to output a first radio frequency signal through the antenna, and configured to receive a second radio frequency signal fed back by a tag through the antenna.

[0048] It can be understood that the RFID reader can also be provided with a control device, which is electrically connected to the radio frequency module and is used to store and execute the following RFID control method. The control device can be implemented by a controller, such as an MCU, a DSP (Digital Signal Process), an FPGA (Field Programmable Gate Array), a PLC, a SOC (System On Chip), etc. When the RFID reader is in a static state, the control device controls the radio frequency module to stop outputting the first radio frequency signal. When the RFID reader is in a working state, the control device controls the radio frequency module to output the first radio frequency signal. The first radio frequency signal output by the radio frequency module is received by the electronic tag, and the electronic tag feeds back the second radio frequency signal to the RFID reader. After receiving the second radio frequency signal through the radio frequency module and the antenna, the control device can obtain the information in the current electronic tag and store it or upload it to the external terminal of the warehouse system through its own communication module.

[0049] Reference Figure 1 The present application provides an RFID control method, the method comprising:

[0050] Step S100, the handheld RFID reader switches from a static state to a working state every first time interval, and switches to a static state after maintaining the working state for a second time interval; wherein the handheld RFID controls the radio frequency module to stop outputting the first radio frequency signal when in a static state, and controls the radio frequency module to output the first radio frequency signal when in a working state;

[0051] Step S200, obtaining the number of times the radio frequency module receives the second radio frequency signal fed back by the tag through the antenna within a unit time interval;

[0052] In step S300, the first time length and the second time length are set based on the number of times; the number of times is inversely proportional to the first time length, and the number of times is proportional to the second time length.

[0053] In this embodiment, the control device controls 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 for a second time length (set by the developer), then controls the radio frequency module to stop outputting the first radio frequency signal for a first time length (set by the developer) after the second time length, and then controls the radio frequency module to output the first radio frequency signal for a second time length, and so on.

[0054] The unit time length can be set by the developer according to the needs. Optionally, in an embodiment, the sum of the first time length and the second time length is a constant cycle time length; and the unit time length is greater than the cycle time length (set by the developer). In this way, it is convenient for the control device to set the first time length and the second time length, and the unit time length is greater than the cycle time length, so that sufficient accurate data can be obtained in the reading process, thereby effectively improving the judgment of the control device on the number of electronic tags currently required to be read.

[0055] It can be understood that the more the number of times in the unit time length, the more electronic tags currently required to be read, and the higher the frequency of performing the reading action. At this time, the control device will shorten the first time length and increase the second time length, thereby increasing the time length of the radio frequency module in the output first radio frequency signal state, i.e., the time length of performing the reading action. Similarly, the fewer the number of times in the unit time length, the fewer electronic tags currently required to be read, and the lower the frequency of performing the reading action. At this time, the control device considers that the user does not have the demand for using the handheld RFID reader multiple times, and will increase the first time length and shorten the second time length, thereby shortening the time length of the radio frequency module in the state of stopping outputting the first radio frequency signal, i.e., the time length of performing the reading action, so as to reduce the power consumption as much as possible.

[0056] Optionally, when adjusting the first time length and the second time length, the control device can adjust by a fixed value, such as increasing / decreasing the first time length by a fixed value and increasing / decreasing the second time length by a fixed value.

[0057] Optionally, based on the sum of the first time length and the second time length being a constant cycle time length, the control device further adjusts the time length change of the first time length and the second time length by setting the ratio of the first time length and the second time length. In an embodiment, the step S300 of setting the first time length and the second time length based on the number of times comprises:

[0058] In the case that the number of times is zero, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 9:1.

[0059] In the case that the number of times is not zero and is in the first number of times interval, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 7:3.

[0060] In the case that the number of times is not zero and is in the second number of times interval, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 5:5.

[0061] In the case that the number of times is not zero and is in the third number of times interval, the first time length and the second time length are set based on the cycle time length, so that the first time length and the second time length are in a ratio of 3:7; wherein the minimum value of the third number of times interval is greater than the maximum value of the second number of times interval, and the minimum value of the second number of times interval is greater than the maximum value of the first number of times interval.

[0062] In the embodiment, the control device matches a corresponding number of times interval (wherein the first number of times interval, the second number of times interval and the third number of times interval are set by the R&D personnel, and it can be understood that the minimum value of the first number of times interval is greater than or equal to 1) according to the number of times of the second radio frequency signal fed back by the electronic tag obtained in a unit time length, and sets a corresponding ratio of the first time length and the second time length according to the determined number of times interval. In this way, the control device can match the ratio relationship of the first time length and the second time length based on the number of times, so that the power consumption can be reduced as much as possible when the number of times is low, thereby improving the actual endurance of the device.

[0063] The RFID control method comprises: a handheld RFID reader switches from a static state to a working state every first time length, and switches to the static state after maintaining the working state for a second time length; obtaining the number of times of the second radio frequency signal fed back by the electronic tag received by the radio frequency module through the antenna in a unit time length; and then setting the first time length and the second time length based on the number of times; wherein the number of times is inversely proportional to the first time length, and the number of times is proportional to the second time length. In this way, in actual application, the handheld RFID reader of the present application adaptively adjusts the time length of the static state and the time length of the working state according to the current reading frequency of the electronic tag, i.e. the number of times of reading the electronic tag in a unit time, so that the longer the time length of the static state is when the reading frequency of the electronic tag is lower, thereby effectively reducing the power consumption and improving the actual endurance of the device.

[0064] It needs to be understood that, from the above embodiments, if the number of times is not zero and the number of times is in the first number interval in a unit time, the control device sets the first time and the second time based on the cycle time, so that the ratio of the first time and the second time is 7 to 3. However, in actual situations, although there are many goods to be read by the electronic tag, due to the large and heavy goods or inconvenient handling, the warehousing speed is very slow, which may also cause the number of times in a unit time to be in the first number interval, so that the user may encounter the first time reading failure when reading the electronic tag each time, and needs to wait for a while, so that the repeated number of times is large, and the user will feel inconvenient to use.

[0065] Therefore, based on the embodiment that the sum of the first time and the second time is a constant cycle time, in an embodiment of the present application, the setting of the first time and the second time based on the cycle time when the number of times is not zero and the number of times is in the first number interval further includes:

[0066] In the case that the number of times in each unit time of N consecutive unit times is not zero and the number of times is in the first number interval, the first time and the second time are set based on the cycle time, so that the ratio of the first time and the second time is 5 to 5; wherein N is greater than or equal to 3.

[0067] In this embodiment, if the control device obtains a certain number of second radio frequency signals from the electronic tag in at least 3 consecutive unit times, and the number of times is in the first number interval, it is determined that the user has the actual demand of continuously reading multiple goods, so the first time and the second time are generally set based on the cycle time, so that the ratio of the first time and the second time is 5 to 5, so that the handheld RFID reader can be in working state and read the current electronic tag when the user approaches the electronic tag each time, thereby effectively improving the convenience of use.

[0068] It needs to be understood that, from the above content, when the number of times is zero, most of the time in a cycle time will be the first time. Therefore, when the user is about to start reading the electronic tag of the first goods, the handheld RFID reader is likely to be in a static state and not to react, thereby misleading the user and making the user misjudge that the current RFID reader has a fault.

[0069] Therefore, based on the embodiment that the sum of the first time and the second time is a constant cycle time, in an embodiment of the present application, referenceFigures 2-3 , the handheld RFID reader further has a holding portion; the step S310, in the case that the number of times is zero, setting the first time length and the second time length based on the periodic time length, so that the first time length and the second time length are in the proportion of 9 to 1, further comprises:

[0070] The step S311, in the case that the number of times is zero, the handheld RFID reader acquires the held state of the holding portion of itself;

[0071] The step S312, in the case that the holding portion of itself is switched from never being held to being held, if the current handheld RFID reader is in the static state, after delaying a third time length, switching from the static state to the working state and keeping the working state for a second time length and then switching to the static state; wherein the third time length is less than the first time length.

[0072] The step S313, in the case that the holding portion of itself is switched from never being held to being held, keeping the current state.

[0073] In the embodiment, the holding portion of the handheld RFID reader can be provided with a metal sheet, which can be connected with the holding sensor. The holding sensor can adopt a capacitive holding sensor to detect the change of the capacitance on the metal sheet and output the result to the control device; or the holding sensor can also adopt a pressure holding sensor to detect the change of the pressure on the metal sheet and output the result to the control device. The control device can determine whether the current holding portion is gripped by the user based on the result output by the holding sensor. It can be understood that for the handheld RFID reader, the user generally puts it in the backpack or hangs it on the waist belt, and takes it out for use when needed. Therefore, in the case that the control device determines that the holding portion of itself is switched from never being held to being held, if the current handheld RFID reader is in the static state, it will be switched from the static state to the working state after delaying a third time length (to leave enough time for the user to place the handheld RFID reader close to the electronic tag of the goods) and keeping the working state for a second time length and then switching to the static state; wherein the third time length is less than the first time length. In this way, when the user is about to start reading the electronic tag of the first goods, the handheld RFID reader can be in the working state with high probability, so as to quickly respond to read the electronic tag and effectively improve the convenience of use for the user.

[0074] In addition, it can be understood that in the case that the holding portion of itself is switched from never being held to being held, the handheld RFID reader will keep the current state.

[0075] It should be understood that in actual situations, the user can hold the RFID reader all the way, so that the handheld RFID reader is misjudged, and unnecessary power consumption is caused.

[0076] For this purpose, with reference to Figure 3 , based on the embodiment that the sum of the first time length and the second time length is a constant cycle time length, in an embodiment of the present application, the step S312, in the case that the holding part of the control device is switched from being not held to being held, if the handheld RFID reader is in the static state, after delaying for a third time length, the handheld RFID reader is switched from the static state to the working state and kept in the working state for a second time length and then switched to the static state, comprises:

[0077] Step S3121, acquiring the action state of the user;

[0078] Step S3122, in the case that the user is switched from the moving state to the stopping moving state and the holding part of the control device is switched from being not held to being held, if the handheld RFID reader is in the static state, after delaying for a third time length, the handheld RFID reader is switched from the static state to the working state and kept in the working state for a second time length and then switched to the static state.

[0079] In the embodiment, the control device can acquire the action state of the user through the RFID reader based on the motion detection sensor in the handheld RFID reader, such as the accelerometer, the gyroscope, etc. For example, the control device identifies that the handheld RFID reader moves back and forth in the trend of two directions based on the motion information, and then determines that the user only holds the device and swings the device naturally 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 in the motion trend of moving towards a single direction or is not moving, it is determined that the user is in the stopping moving state.

[0080] Optionally, in another embodiment, the control device can also acquire the position parameter of the control device based on the position sensor in the handheld RFID reader. If it is determined based on the position parameter that the handheld RFID reader is in the moving state and the moving distance is greater than a certain distance (preset by the developer) and the holding part is held, it is determined that the user moves while holding the handheld RFID reader. If it is determined based on the position parameter that the handheld RFID reader is in the moving state and the moving distance is less than a certain distance, or is in the static state, it is determined that the user is in the stopping moving state.

[0081] In a case where it is determined that the user switches from the moving state to the stopping state and it is determined that the user still holds the handheld RFID reader, the control device determines that the current user has a use demand, and then performs the action of switching from the static state to the working state after the third time length is delayed and switching to the static state after the handheld RFID reader remains in the working state for the second time length, so as to facilitate the user to start reading the first electronic tag. In this way, through the above setting, the unnecessary power consumption of the handheld RFID reader is effectively reduced, and the actual endurance thereof is improved.

[0082] It should be understood that in actual cases, when the user uses the RFID reader to read the electronic tag in the warehouse system, sometimes because the goods are too high or the goods are placed too deep, the user often has difficulty in directly reading the electronic tag of the goods with the RFID reader, and will stretch out the RFID reader to be closer to the goods to be read. From the above content, when the number of times in the unit time length is 0, i.e., no electronic tag has been read, the RFID reader is in a state of stopping outputting the first radio frequency signal for most of the time length in the periodic time length, i.e., a static state, which is more likely to cause the user to think that the distance is not close enough and need to stretch the RFID reader to the goods, which brings many inconveniences to the user's operation.

[0083] Therefore, with reference to Figure 4 , based on the embodiment that the sum of the first time length and the second time length is a constant periodic time length, in an embodiment of the present application, the handheld RFID reader further has an identification end, which is arranged towards the tag when the handheld RFID reader receives the second radio frequency signal fed back by the tag. The handheld RFID reader is preconfigured with a first power range and a second power range. The minimum value of the second power range is greater than the maximum value of the first power range. The method further comprises:

[0084] Step S400, the handheld RFID reader acquires motion information of itself in a case where it is determined that the holding part of the handheld RFID reader is held.

[0085] Step S500, when it is determined that the handheld RFID reader moves in a trend towards the direction in which the identification end points based on the motion information, the control device controls the radio frequency module to switch to the working state and remain in the working state for the second time length, and controls the power of the radio frequency module to switch from the first power range to the second power range.

[0086] In the embodiment, the control device can identify whether the holding part of the handheld RFID is held by the user in the same manner as in the above embodiments, which will not be described herein again. When the control device determines that the user is holding the holding part of the RFID reader, the control device can obtain the motion information of the RFID reader through the motion detection sensor in the RFID reader, such as a gyroscope, an accelerometer, a Hall element, and the like. It can be understood that when the user wants to use the RFID reader to reach the goods far away, the user will inevitably move the recognition end to point to the electronic tag on the goods and approach the electronic tag. Therefore, when the control device determines that the motion is in the direction in which the recognition end points based on the motion information, the control device can determine that the user has a motion trend of holding the handheld RFID reader to approach the electronic tag on the goods far away from the RFID reader. At this time, if the RFID reader is in a static state, the control device can immediately control the RFID to switch to the working state and keep the second time length, that is, the control device can control the radio frequency module to start outputting the first radio frequency signal, so that the RFID reader has the ability to read the electronic tag at this time.

[0087] Meanwhile, in order to facilitate the user to read the electronic tag on the goods far away through the handheld RFID reader, the control device can control the radio frequency module to increase the working power, for example, to increase the amplitude of the output first radio frequency signal, so as to increase the signal strength of the first radio frequency signal, thereby increasing the transmission distance after the first radio frequency signal is output through the antenna. The control device can control the power of the radio frequency module to switch from the first power range (set by the researchers) to the second power range (set by the researchers), so that the RFID reader can read the electronic tag far away more quickly at this time, thereby effectively improving the convenience of use of the user.

[0088] Furthermore, in order to further reduce the power consumption and effectively ensure the actual endurance of the handheld RFID reader, the control device can control the radio frequency module to switch from the first power range to the second power range in the following manner. Figure 5 In an embodiment of the present application, the step S500 of controlling the power of the radio frequency module to switch from the first power range to the second power range includes:

[0089] The step S510 of controlling the power of the radio frequency module to switch from the first power range to the minimum value of the second power range.

[0090] The step S520 of controlling the power of the radio frequency module to increase by a preset power increase value every first interval time length from the minimum value of the second power range until the maximum value of the second power range is reached or the second radio frequency signal fed back by the tag is received through the antenna based on the motion information of the RFID reader.

[0091] In the embodiment, in order to reduce power consumption as much as possible, the control device does not switch to a large power at first when increasing the power of the radio frequency module, but increases to the minimum value of the second power range. If the requirement of reading the electronic tag at a long distance can be met at this time, the control device stops controlling the power increase of the radio frequency module to reduce power consumption as much as possible. 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 close to the goods, the power of the radio frequency module is controlled to increase by a preset power increase value (both the first interval time and the preset power increase value are preset by the researchers in advance) every first interval time until the maximum value of the second power range or the second radio frequency signal fed back by the tag is received through the antenna. In this way, in the case where the RFID reader needs to work at a high power to meet the working requirement, the power consumption is reduced as much as possible, thereby increasing the actual endurance of the RFID. It can be understood that if the maximum value of the second power range is reached and the second feedback signal is still not received, 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 time and the second time will be adjusted back to 9 to 1, and the control device will directly control the power of the radio frequency module to be in the first power range.

[0092] In addition, it needs to be understood that in actual situations, the user holding the handheld RFID reader may also swing back and forth, which is easy to misjudge the control device and perform the above-mentioned misoperation of increasing the power of the radio frequency module, resulting in increased power consumption and reduced endurance of the handheld RFID reader. Therefore, in another embodiment of the present application, when the trend of the motion information is determined to be pointing towards the direction of the identification end, the control of the radio frequency module switching to the working state further comprises:

[0093] When the trend of the motion information is determined to be pointing towards the direction of the identification end and the trend of the motion information is determined to be pointing towards the opposite direction of the identification end, the power of the radio frequency module is controlled to remain in the first power range. In this way, when the motion information is recognized by the control device that the RFID reader is only swung back and forth by the user, it is judged that the user does not have the requirement of reading the electronic tag of the goods at a long distance at this time, and then the RFID reader is set to remain in the first power range, and the radio frequency module is controlled according to the ratio of the first time to the second time of 9 to 1 to reduce the power consumption of the handheld RFID as much as possible.

[0094] The application further provides a warehouse system, which comprises a handheld RFID reader, the handheld RFID reader comprising a control device, an antenna and a radio frequency module connected with the antenna; wherein the control device comprises a memory, a processor and the RFID control method according to any one of the preceding embodiments stored in the memory and capable of being run on the processor.

[0095] It is worth noting that, since the warehouse system of the application comprises the RFID control method, the warehouse system of the application also comprises all the embodiments of the RFID control method and the effects brought by each embodiment, which will not be repeated here.

[0096] The above only describes some embodiments of the application, and does not limit the patent scope of the application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or direct / indirect application in other related technical fields based on the technical concept of the application and the content of the specification and drawings are included in the patent protection scope of the application.

Claims

1. An RFID control method characterized by, The application is applied to a warehouse system, which comprises a handheld RFID reader with an antenna and a radio frequency module connected with the antenna; The radio frequency module is used to output a first radio frequency signal through the antenna and receive a second radio frequency signal fed back by a tag through the antenna; The method comprises: Step S100, the handheld RFID reader switches from a static state to a working state every first time length and switches to the static state after maintaining the working state for a second time length; wherein the handheld RFID 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, the number of times that the radio frequency module receives the second radio frequency signal fed back by a tag through the antenna within a unit time length is acquired; Step S300, the first time length and the second time length are set based on the number of times; wherein the number of times is inversely proportional to the first time length, and the number of times is proportional to the second time length; The sum of the first time length and the second time length is a constant period time length; the unit time length is greater than the period time length; The step S300, setting the first time length and the second time length based on the number of times, comprises: Step S310, in the case that the number of times is zero, the first time length and the second time length are set based on the period time length, so that the ratio of the first time length to the second time length is 9 to 1; Step S320, in the case that the number of times is not zero and the number of times is in a first number of times interval, the first time length and the second time length are set based on the period time length, so that the ratio of the first time length to the second time length is 7 to 3; Step S330, in the case that the number of times is not zero and the number of times is in a second number of times interval, the first time length and the second time length are set based on the period time length, so that the ratio of the first time length to the second time length is 5 to 5; Step S340, in the case that the number of times is not zero and the number of times is in a third number of times interval, the first time length and the second time length are set based on the period time length, so that the ratio of the first time length to the second time length is 3 to 7; wherein the minimum value of the third number of times interval is greater than the maximum value of the second number of times interval, and the minimum value of the second number of times interval is greater than the maximum value of the first number of times interval.

2. The RFID control method of claim 1, wherein, The step S320, in the case that the number of times is not zero and the number of times is in a first number of times interval, setting the first time length and the second time length based on the period time length, so that the ratio of the first time length to the second time length is 7 to 3, further comprises: In the case that the number of times in each unit time length of N continuous unit time lengths is not zero and the number of times is in a first number of times interval, the first time length and the second time length are set based on the period 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.

3. The RFID control method of claim 2, wherein, The handheld RFID reader also has a holding part; the step S310 further includes: The step S311, in the case that the number of times is zero, the handheld RFID reader acquires the held state of the holding part of the handheld RFID reader; The step S312, in the case that the holding part of the handheld RFID reader is switched from the non-held state to the held state, if the current handheld RFID reader is in the static state, after delaying a third time length, the handheld RFID reader is switched from the static state to the working state and then switched to the static state after maintaining the working state for a second time length; wherein the third time length is less than the first time length; The step S313, in the case that the holding part of the handheld RFID reader is switched from the non-held state to the held state, the current state is maintained.

4. The RFID control method of claim 3, wherein, The step S312, in the case that the holding part of the handheld RFID reader is switched from the non-held state to the held state, if the current handheld RFID reader is in the static state, after delaying a third time length, the handheld RFID reader is switched from the static state to the working state and then switched to the static state after maintaining the working state for a second time length, includes: The step S3121, acquiring the action state of the user; The step S3122, in the case that the user is switched from the moving state to the non-moving state and the holding part of the handheld RFID reader is switched from the non-held state to the held state, if the current handheld RFID reader is in the static state, after delaying a third time length, the handheld RFID reader is switched from the static state to the working state and then switched to the static state after maintaining the working state for a second time length.

5. The RFID control method of claim 4, wherein, 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 towards the tag; the handheld RFID reader is pre-set 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: The step S400, in the case that the holding part of the handheld RFID reader is held, the handheld RFID reader acquires the motion information of the handheld RFID reader; The step S500, in the case that the handheld RFID reader moves towards the direction in which the identification end points based on the motion information, the radio frequency module is controlled to switch to the working state and maintained for a second time length, and the power of the radio frequency module is controlled to switch from the first power range to the second power range.

6. The RFID control method of claim 5, wherein, The step S500, the power of the radio frequency module is controlled to switch from the first power range to the second power range, includes: The step S510, the power of the radio frequency module is controlled to switch from the first power range to the minimum value of the second power range. In step S520, when the motion information indicates that the mobile terminal is still moving towards the direction indicated by the identification terminal and no second radio frequency signal is received from the tag via the antenna within a fourth time period, the power of the radio frequency module is increased by a preset power increase value every first interval time period 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 is received from the tag.

7. The RFID control method of claim 6, wherein, The method further includes: When the motion information indicates that the mobile terminal is moving towards the direction indicated by the identification terminal, the radio frequency module is controlled to switch to the working state, and the method further includes:

8. A warehousing system characterized by, When the motion information indicates that the mobile terminal is moving towards the direction indicated by the identification terminal and moving towards the opposite direction of the direction indicated by the identification terminal alternately, the power of the radio frequency module is kept in the first power range. The system includes a handheld RFID reader, the handheld RFID reader includes a control device, an antenna and a radio frequency module connected to the antenna. The control device includes a memory, a processor and an RFID control method as claimed in any one of claims 1-7 stored in the memory and executable on the processor.

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