CN113704053B

CN113704053B - Cabinet asset management device and control method thereof

Info

Publication number: CN113704053B
Application number: CN202110850811.0A
Authority: CN
Inventors: 童艳利; 王志锟; 钟文江
Original assignee: Guangzhou Nandun Communications Equipment Co ltd
Current assignee: Guangzhou Nandun Communications Equipment Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2024-05-31
Anticipated expiration: 2041-07-27
Also published as: CN113704053A

Abstract

The application discloses a cabinet asset management device and a control method thereof, which relate to asset management equipment, wherein the device comprises: the system comprises an acquisition module and a main control module, wherein the main control module comprises a serial control interface and a tag acquisition communication interface, the tag interfaces of all U-bit units are connected to the tag acquisition communication interface, and the serial control interface of the main control module is connected with a signal processing unit of a first U-bit unit in the acquisition module; the signal processing unit of each U-bit unit executes the following steps according to the acquisition instruction of the previous stage after receiving the acquisition instruction of the previous stage: determining whether a tag interface needs to be started or not according to bit expression information of a plurality of preset positions in the acquisition instruction; and deleting bits at a plurality of preset positions in the acquisition instruction of the previous stage to serve as the acquisition instruction sent to the next stage.

Description

Cabinet asset management device and control method thereof

Technical Field

The application relates to asset management equipment, in particular to a cabinet asset management device and a control method thereof.

Background

With the development of internet technology, the size of a machine room is continuously increased, and a blade server is taken as an important asset in the machine room, so that the management of the blade server is paid attention to. In the related art, a positioning device is installed for each blade server (or other equipment asset) to determine whether the device is at a predetermined location, and the asset is monitored in turn.

The existing equipment cabinet asset management strip mainly takes a hard PCB as a main part, and the length of the existing equipment cabinet asset management strip is fixed. For example, a standard rack having a height of 42U (1U means the height of a cabinet to which one device is mounted, where a height of 42U means 42 devices can be mounted on a cabinet), and a length of approximately 2 meters, the existing asset management strip is assembled using a collection module having a length of 7 segments 6U (i.e., the collection module includes 6U bits, one U bit being used to collect information about one device). Typically, to collect 42U asset data and LED display control, each 6U collection module also requires a microprocessor as a co-processor in communication with the master control module to complete data collection, communication and LED control.

The related art has the following drawbacks: 1. if the custom cabinet is of other values, for example 47U, the acquisition module with the number of U bits of other values needs to be developed; 2. each acquisition module needs to be additionally provided with an MCU as a coprocessor, so that the material and the related cost are increased; 3. to complete the communication, each 6U module needs to be configured with a unique address, which is very inconvenient for field maintenance.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a cabinet asset management device and a control method thereof, which are used for reducing the cost and facilitating the deployment.

The embodiment of the application provides:

a cabinet asset management device comprising:

The acquisition module comprises a plurality of U-bit units which are sequentially connected in series, wherein each U-bit unit comprises a signal processing unit and a tag interface controlled by the signal processing unit, and the signal processing units of the U-bit units are sequentially connected;

the main control module comprises a serial control interface and a tag acquisition communication interface, the tag interface of each U-bit unit is connected to the tag acquisition communication interface, and the serial control interface of the main control module is connected with the signal processing unit of the first U-bit unit in the acquisition module;

The main control module is used for sending an acquisition instruction to the acquisition module through the serial control interface so as to acquire label information corresponding to each U-bit unit;

the signal processing unit of each U-bit unit executes the following steps according to the acquisition instruction of the previous stage after receiving the acquisition instruction of the previous stage:

determining whether a tag interface needs to be started or not according to bit expression information of a plurality of preset positions in the acquisition instruction;

And deleting bits at a plurality of preset positions in the acquisition instruction of the previous stage to serve as the acquisition instruction sent to the next stage.

In some embodiments, the acquisition instructions consist of a plurality of bits, the bits of the number of predetermined locations being:

Collecting the first several bits in the instruction;

Or alternatively

Collecting a last several bits in the instruction;

Or alternatively

The first and last bits in the instruction are collected.

In some embodiments, each U-bit cell further includes an indicator light for indicating an operating state of the U-bit cell.

In some embodiments, each U-bit cell of the acquisition module is formed on a flexible PCB with a connection pad reserved between each U-bit cell for soldering two separate U-bit cells together.

In some embodiments, the main control module is further configured to obtain configuration information to determine the number of U-bit units, and determine the length of the acquisition instruction according to the number of U-bit units.

In some embodiments, the U-bit unit is configured with a collection antenna that is magnetically affixed to the U-bit unit, the collection antenna being interfaced with the tag.

In some embodiments, the tag acquisition communication interface employs a communication interface with a conflict resolution mechanism.

In another aspect, the present embodiment provides a control method of the cabinet asset management device, which is applied to a master control module, and the method includes an initialization step and a maintenance step:

The initializing step comprises the following steps:

Generating and transmitting independent acquisition instructions corresponding to all U-bit units in sequence, wherein when the independent acquisition instructions corresponding to the U-bit units are transmitted to a processing unit of the U-bit unit, the information expressed by bits of a plurality of preset positions in the transmitted independent acquisition instructions is an acquisition starting interface, and when the independent acquisition instructions corresponding to all U-bit units are transmitted to processing units of other U-bit units, the information expressed by bits of a plurality of preset positions in the transmitted independent acquisition instructions is an acquisition closing interface;

generating a tag stock record table according to tag information acquired by the tag acquisition communication interface and the time for acquiring the tag information;

The maintenance step includes:

Transmitting all acquisition instructions or transmitting independent acquisition instructions corresponding to each U-bit unit to an acquisition module;

And updating the label stock record table according to the label information acquired by the label acquisition communication interface.

In some embodiments, the updating the tag stock record table according to the tag information collected by the tag collection communication interface specifically includes:

Deleting first tag information which is not acquired in one acquisition period but recorded in the tag stock record table;

And carrying out position confirmation on the second tag information which is acquired in one acquisition period but not recorded in the tag stock record table, and associating the second tag information with a corresponding U-bit unit of the tag stock record table.

In some embodiments, the location confirmation of the second tag information collected in one collection period but not recorded in the tag stock record table is specifically:

determining U-bit units without corresponding tag information in the tag stock record table after deleting the first tag information as candidate U-bit units;

and sending an acquisition instruction to read at least part of label information acquired by the candidate U-bit units, and associating the second label information to the U-bit units, of which the acquired label information is the same as the second label information.

The embodiment of the application adopts a mode of a main control module and an acquisition module, realizes the control of each U-bit unit by configuring the processing unit of each U-bit unit to process the acquisition instruction, and the scheme does not need to configure the address of the U-bit unit, and the U-bit unit does not need to inform the main control module of the address of the U-bit unit, so that the mode can be realized by adopting a processing chip with lower cost, compared with the prior art, the cost of a coprocessor is reduced, meanwhile, based on the acquisition signal transmission mode of the scheme, the acquisition modules with various U-bit numbers are not required to be additionally researched and developed, and the research and development cost is reduced by only connecting the acquisition modules together in series.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a cabinet asset management device provided by an embodiment of the present invention;

Fig. 2 is a workflow diagram of a cabinet asset management device according to an embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described by means of implementation examples with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present invention, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention in combination with the specific contents of the technical scheme.

In the description of the present invention, a description of the terms "one embodiment," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples," etc., means that a particular feature or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1, a cabinet asset management device includes a main control module and an acquisition module:

The acquisition module comprises a plurality of U-bit units which are sequentially connected in series, wherein each U-bit unit comprises a signal processing unit (serial cascade control unit) and a tag interface controlled by the signal processing unit, and the signal processing units of the U-bit units are sequentially connected. Wherein each U bit unit is used for collecting information of one device. Each U-bit cell may correspond to a device. In general, an electronic tag is configured on the device, and the U-position unit reads information of the electronic tag on the device in a wired or near-field antenna mode, so as to implement induction on the device. The U-bit units are all in serial communication, and the communication is characterized in that after an original acquisition signal is sent out from a main control module, the first U-bit unit performs execution and processing, then the first U-bit unit sends the processed acquisition signal to the second U-bit unit, and the acquisition signal is transmitted to the last U-bit unit by the same type of inference.

The main control module comprises a serial control interface and a tag acquisition communication interface, the tag interface of each U-bit unit is connected to the tag acquisition communication interface, and the serial control interface of the main control module is connected with the signal processing unit of the first U-bit unit in the acquisition module. In this embodiment, the main control module may be used as a master control of a cabinet or a device cluster, and is in communication with an upper computer, and reports related information to the upper computer (such as a manager computer). The main control module can be realized by adopting MCU with relatively complete functions and peripheral circuits thereof.

The main control module is used for sending an acquisition instruction to the acquisition module through the serial control interface so as to acquire label information corresponding to each U-bit unit. The acquisition module can establish a label stock record table after acquiring label data corresponding to each U-bit unit and maintain the label stock record table, so that the purpose of equipment management is realized.

In this embodiment, the processing unit determines the current action (in this embodiment, the switch to the tag interface) according to the bit at the specific position when receiving the acquisition instruction of the previous stage, and performs the deletion processing on the bit at the specific position. For example, assuming that the instruction sent by the main control module is 101010 (6 bits), in this example, the specific bit position is the first bit, the instruction received by the processing unit of the first U-bit unit is 101010, when the first bit of the acquisition instruction received by the processing unit of the first U-bit unit is "1", it indicates that the tag interface needs to be started to acquire, the acquisition instruction processed by the processing unit of the first U-bit unit is 01010 (5 bits), and the first U-bit unit transmits the 5-bit instruction to the second U-bit unit. The first bit of the acquisition unit received by the second U-bit unit is "0", indicating that the tag interface acquisition does not need to be started. To the second order, for the acquisition instruction 101010, the specific positions of the acquisition instructions received by the U-bit units in the odd positions are all "1", and the specific positions of the acquisition instructions received by the U-bit units in the even positions are all "0". Thus, in the above example, the control module only needs to send 001000 if it needs to control the 3 rd U-bit unit to perform tag reading alone.

In the above example, a total of 6 processing units of the acquisition module are taken as an example for explanation. When the main control module does not establish the label stock record list, firstly, a corresponding independent acquisition instruction is sent to each U-bit unit. For example, the first U-bit cell has an individual acquisition instruction of 100000, the second U-bit cell has an acquisition instruction of 010000, and so on. Of course, the main control module can determine how many U-bit units are currently connected according to the configuration information of the user. Because of the special transmission mode among the U-bit units in the embodiment, the U-bit units do not need to be addressed, and the on-site deployment is more convenient. Meanwhile, the U-bit units do not need to know the address of the U-bit units or inform the main control module of the address of the U-bit units, so that a chip with lower cost can be adopted, and the U-bit units do not need to be assisted by a coprocessor, so that the cost is lower.

When receiving the related instruction, the U-bit unit can start the tag interface to read, the read tag information can be transmitted to the main control module through the tag acquisition communication interface, and the main control module can initialize the tag stock record table according to the sequence of the instruction sending and the corresponding condition of the tag information and the U-bit unit determined by the time of the tag information receiving.

For example, in the initialization stage, the main control module sequentially (periodically) sends 100000, 010000, 001000, 000100, 000010, 000001 the 6 independent acquisition instructions, and the 6 independent acquisition instructions respectively activate the first to sixth U-bit units in sequence to acquire corresponding tag information sequentially through the tag acquisition communication interface. Of course, because not all the devices in the cabinet can be stored, when the main control module does not receive the tag information in a certain time, it is determined that the U-bit unit does not acquire the tag information of the device. Of course, when the tag device is not acquired, the main control module may also read a signal indicating that the tag is empty, which may be achieved by both implementations.

After the initialization is completed, in the subsequent tag reading period, the latest equipment installation condition can be obtained only by updating and maintaining the tag stock record table. In the subsequent acquisition process, in order to improve the acquisition efficiency, the overall acquisition instructions can be sent to the acquisition module, so that the acquisition times of the instructions can be reduced. As can be seen from the above explanation of the processing unit of the U-bit unit, the U-bit unit can perform tag acquisition after receiving the instruction, as long as the bits of the specific location of the response are configured to indicate the acquired content. For example, in the above embodiment, the control module may send 111111 to the acquisition module, where tag acquisition is performed after the acquisition instructions received by the 6U-bit units. The main control module can acquire the label information acquired by each U-bit unit through the label acquisition communication interface. Here, since the time from receiving the acquisition command to controlling the start of the tag interface may be less than the time for the main control module to acquire the tag information through the tag acquisition communication interface. Therefore, in order to solve the problem of communication collision, the present embodiment provides modes 1 and 2. Mode 1, a tag acquisition communication interface with a conflict resolution mechanism, such as I2C, may be used; in the mode 2, the time for starting the interface tag by the U-bit unit can be set artificially, so that the time from receiving the acquisition instruction to controlling the starting of the tag interface by the U-bit unit is longer than the time for acquiring tag information by the main control module through the tag acquisition communication interface. This can solve the problem of communication collision. In embodiment 1, although the problem of collision is solved, the order of the tag information cannot be ensured. By adopting the mode 2, the problem of conflict can be solved, and the corresponding sequence of the tag information can be determined according to the uploading time of the tag information.

The following is exemplified in the form of a table, as shown in table 1, assuming that the correspondence obtained in the initialization stage is:

TABLE 1

Numbering device	Position of	Current tag
			1	Machine cabinet 1 st machine position	Label information 1
2	Machine cabinet 1 No. 2 machine position	Null
			3	Machine cabinet 1 No. 3 machine position	Null
4	Machine cabinet 14 th machine position	Null
			5	Machine cabinet 15 th machine position	Label information 2
6	Machine cabinet 16 th machine position	Label information 3

As can be seen from table 1, there are 6U-bit units in the table, and only tag information 1, tag information 2, and tag information 3 are read at the time of initialization, corresponding to 6 machine bits (device positions) of the cabinet 1. It can be seen that the 2 nd to 4 th machine bits are not placed with the relevant equipment or the equipment is not properly connected with the U bit unit at the time of initialization.

Assuming that tag information 1, tag information 2, and tag information 4 are read in a certain subsequent tag reading period, tag information 3 is deleted from table 1 due to the lack of tag information 3 at this time of acquisition, resulting in table 2.

TABLE 2

In the case where the tag information 4 obtained is collected by using the whole instruction and the collection order is not discriminated, it is necessary to determine the specific position from the empty machine position because the position cannot be determined. At this time, an independent acquisition instruction can be directly sent to the machine position of the current tag Null, so that the machine position corresponding to the tag information 4 can be accurately determined.

In some embodiments, to increase the speed of the validation, the acquisition instruction may be sent in a dichotomy manner to the current ticket's Null slot. For example, 0110800 is first sent to determine if the 2 nd and 3 rd digits correspond to tag information 4. If so, then determine if it is the 2 nd or 3 rd bit specifically by sending 010000 and/or 001000.

According to the embodiment, the mode of the main control module and one acquisition module is adopted, the acquisition instruction is processed by the processing unit of each U-bit unit to realize the control of each U-bit unit, the address of the U-bit unit is not required to be configured, and the main control module is not required to be informed of the address of the U-bit unit, so that the processing chip with lower cost can be adopted to realize the control of the U-bit unit, and compared with the prior art, the cost of a coprocessor is reduced.

In some embodiments, the acquisition instructions are made up of a plurality of bits, the bits of the number of predetermined locations may take the following form.

The first few bits in the instruction are collected. The representation may be made with the first two bits. For example 110000000000, by increasing the number of bits at a particular location, the information to correct the error code can be increased, and the fault tolerance can be increased.

The last few bits in the instruction are collected. Similar to the previous example, but in a different location.

The first and last bits in the instruction are collected. Similar to the previous example, but in a different location.

In some embodiments, each U-bit cell further includes an indicator light for indicating an operating state of the U-bit cell. The indicator light may indicate that the device is currently detected, that the current U-bit is functioning properly, etc.

In some embodiments, each U-bit cell of the acquisition module is formed on a flexible PCB with a connection pad reserved between each U-bit cell for soldering two separate U-bit cells together. In this embodiment, in order to facilitate field construction, a flexible PCB is used in the prefabricated collection module to facilitate field cutting by a constructor, and welding is performed by using a connection pad. This is not subject to whether the cabinet is standard or not.

In some embodiments, the main control module is further configured to obtain configuration information to determine the number of U-bit units, and determine the length of the acquisition instruction according to the number of U-bit units. In this embodiment, a user configures a main control module through an upper computer or a mobile phone terminal, specifically sets the number of U-bit units, and then determines the length of an acquisition instruction according to a preset instruction rule. For example, if the number of bits at a specific position is 1, the length of the acquisition instruction and the number of U-bit units are the same.

In some embodiments, the U-bit unit is configured with a collection antenna that is magnetically affixed to the U-bit unit, the collection antenna being interfaced with the tag. It should be understood that the acquisition antenna of this scheme is connected at the label interface to supply power through the label interface. Setting up the collection antenna is equivalent to having made the extension to the label interface for the label interface is more "close" the electronic tags of equipment, just so can reduce the collection power, avoids the label information of other equipment of erroneous collection.

The initializing step comprises the following steps:

The maintenance step includes:

As shown in fig. 1 and 2, the present embodiment discloses another embodiment, a cabinet asset management system includes: the system comprises an asset management main controller (main control module), an asset management strip (acquisition module), an electronic tag and a bus cable. The asset management strip is connected with the asset management main controller through a bus cable, and the electronic tag is directly connected to the tag interface when in use.

The asset management strip consists of N (42U cabinets are 42) U-bit modules, each U-bit consists of a serial cascade chip, an LED indicator light and an electronic tag interface, wherein each U-bit is mutually independent and supports single U-bit cutting or splicing. The head of the electronic tag is connected with the tag port of the asset management bar, the tail of the electronic tag is fixed on the cabinet asset, and the electronic tag stores data information matched with the asset.

The working procedure of this embodiment is:

1. After the asset management system is electrified, the main controller sends control commands to serial control chips of all N1U-bit modules through the serial controller, an electronic tag interface circuit on a first U-bit module is connected to a tag acquisition communication line (C2 position), and meanwhile, the electronic tag interface circuits from the 2U to the N U are closed to the tag acquisition communication line (C2 position), so that only the 1U-bit electronic tag interface on the tag acquisition communication line is connected.

2. The main controller collects electronic tag data on a communication line through a communication protocol collection tag, if the electronic tag exists, unique data of the electronic tag can be read, the electronic tag data and the U-bit position where the tag is located are stored in a tag stock record table of the main controller, and if the electronic tag does not exist, the communication failure can determine that the U-bit module has no electronic tag, namely the asset is empty.

3. If the electronic tag exists, a control command can be sent through a serial control line to light an LED lamp on the 1U-bit module so as to be used as a prompt of successful access of the electronic tag.

4. After the electronic tag information on the 1 st U-bit module is determined, a control command is sent to the serial control chips of all N1U-bit modules in the same way, an electronic tag interface circuit on the 2 nd U-bit module is connected to a tag acquisition communication line (C2 position), and meanwhile, the 1 st U and the 3 rd U to the N U-bit electronic tag interface circuits are closed to the tag acquisition communication line (C2 position), so that only the 2 nd electronic tag interfaces on the tag acquisition communication line are connected.

5. And (3) in the same steps as in step 2 and 3, determining whether an electronic tag exists on the 2U-bit module, if yes, reading tag data and U-bit positions, storing the tag data and the U-bit positions in a tag stock record table of the main controller, and lighting an LED lamp (C1 position) on the 2U-bit module.

6. And repeating the steps 1,2 and 3, sequentially connecting each U-bit electronic tag interface, reading tag data and U-bit positions on all N U-bit modules, storing the tag data and the U-bit positions in a tag stock record table of the main controller, and correspondingly lighting the LED lamps.

After the steps are finished, the data acquisition and the positioning of the electronic tags of the cabinet asset information are finished by the power-on initialization, and after the power-on initialization, if the tag polling of N U modules is continuously executed, the larger reflecting time is sacrificed, so that after the initialization of the N U modules is finished, the main controller enters a full tag inquiry mode.

7. And sending control commands to serial control chips of all N U-bit modules, and switching on electronic tag interface circuits on all N U-bit modules to a tag acquisition communication line (C2 position), so that all N tags on the tag acquisition communication line are on-line.

8. The main controller collects all electronic tag data on the tag collection communication line through the relevant communication protocol, compares the collected tag information with the stored tag information, and if the tag information is unchanged, the tag information represents no tag change, and then the full tag inquiry is executed at regular time.

9. If the tag information is changed and the tag information is lost, representing that the tag is removed, deleting the record in the stock record table corresponding to the tag according to the record in the stock record table before the tag information, and sending a control command to light an LED lamp (C1 position) on the corresponding U-bit module so as to give a tag loss prompt.

10. If the tag information is changed and is newly added tag information, the U-bit position of the newly added tag needs to be positioned

11. And extracting stock tag information in the main controller, deducting occupied U-bit positions, wherein the residual unoccupied U-bit positions can be possible access positions of newly added tags.

12. To speed up the positioning time, the statistics of the unoccupied U-bit positions are tabulated, then a control command is sent according to about half of the statistics, and half of the electronic tag interface circuits on the U-bit modules are connected to the tag acquisition communication line (C2 position), if 40U-bits from U3 to U42 are empty, the electronic tag interface circuits of U3 to U22 are connected to the tag acquisition communication line, and the other half of U23 to U42 are disconnected.

13. The main controller collects the electronic tag data on the communication line through the communication protocol collection tag, if the newly added electronic tag exists on the U3-U22, the electronic tag is turned on according to half of U bits, the other half is turned off, for example, the U2-U12 is turned on, and the other half of U13-U22 is turned off.

14. And by analogy, the U-bit position of the electronic tag is positioned according to about half of the number of the electronic tags each time, and the U-bit position of the newly added tag can be judged by at most 6 operations according to all 42 unoccupied U-bits and stored in a tag stock record table of the main controller, and meanwhile, an LED lamp (C1 position) on the U-bit module is lightened.

15. After the label is removed or newly added, the main controller can return to the full label inquiry mode, and the next label change comes.

The following advantages are achieved by adopting the embodiment:

the standard machine is standardized, can be cut and spliced at will according to the length of 1U as a standard unit, and is applicable to cabinets with any U-position height;

The method is simple, the U-bit module has no single chip microcomputer, no addressing is realized, the serial cascade circuit is simple, and all the U-bit modules share one control line and one communication line;

The speed is improved, nanosecond control gating is faster than that of RS485 and other communication;

The cost is low, the U-bit module has no main control chip, no communication chip and no trigger circuit, and the cost is reduced by more than half.

Note that the above is only a preferred embodiment of the present application and the technical principle applied. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, while the application has been described in connection with the above embodiments, the application is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the application, which is set forth in the following claims.

Claims

1. A cabinet asset management device, comprising:

Deleting bits of a plurality of preset positions in the acquisition instruction of the previous stage to serve as the acquisition instruction sent to the next stage;

After the original acquisition signal is sent out from the main control module, the first U-bit unit executes and processes the acquisition signal, then the first U-bit unit sends the processed acquisition signal to the second U-bit unit, and the like until the acquisition signal is transmitted to the last U-bit unit;

The main control module is also used for acquiring configuration information to determine the number of the U bit units and determining the length of an acquisition instruction according to the number of the U bit units; determining the length of an original acquisition instruction through the product of the number of the U bit units and the number of bits at a preset position;

The signal processing unit determines the current action according to the bit of the preset position when receiving the acquisition instruction of the previous stage, and deletes the bit of the preset position; deleting bits at preset positions corresponding to the current U-bit units, so that the length of an acquisition instruction is shortened, and the acquisition instruction corresponds to the rest U-bit units.

2. The cabinet asset management device of claim 1, wherein the acquisition instruction is comprised of a plurality of bits, the bits of the plurality of predetermined locations being:

Collecting the first several bits in the instruction;

Or alternatively

Collecting a last several bits in the instruction;

Or alternatively

The first and last bits in the instruction are collected.

3. The cabinet asset management device of claim 1, wherein each U-bit unit further comprises an indicator light for indicating an operational status of the U-bit unit.

4. The cabinet asset management device of claim 2, wherein each U-bit cell of the acquisition module is formed on a flexible PCB with a connection pad reserved between each U-bit cell for soldering two separate U-bit cells together.

5. The cabinet asset management device of claim 1, wherein the tag acquisition communication interface employs a communication interface having a conflict resolution mechanism.

6. The control method of the cabinet asset management device of claim 1, applied to a main control module, wherein the method comprises an initializing step and a maintaining step:

The initializing step comprises the following steps:

The maintenance step includes:

7. The method for controlling a cabinet asset management device according to claim 6, wherein the updating the tag stock record table according to the tag information collected by the tag collection communication interface specifically comprises:

8. The method for controlling a cabinet asset management device according to claim 7, wherein the performing location confirmation on the second tag information acquired in one acquisition period but not recorded in the tag inventory record table specifically includes: