WO2022016834A1

WO2022016834A1 - Automatic counterweight identification method and system, and crane

Info

Publication number: WO2022016834A1
Application number: PCT/CN2021/072149
Authority: WO
Inventors: 杨运广; 黎波; 侯中祥
Original assignee: 湖南三一中型起重机械有限公司
Priority date: 2020-07-24
Filing date: 2021-01-15
Publication date: 2022-01-27
Also published as: CN111847246A; CN111847246B

Abstract

An automatic counterweight identification method and system, and a crane. The automatic counterweight identification method comprises: acquiring identification information on an information identification code (11) of each counterweight (10), and acquiring a first counterweight total weight according to the identification information; acquiring a detection value of a leg pressure sensor, and acquiring a second counterweight total weight according to the detection value of the leg pressure sensor; and acquiring the difference between the first counterweight total weight and the second counterweight total weight, and outputting the first counterweight total weight when the difference between the first counterweight total weight and the second counterweight total weight is within a preset range.

Description

Counterweight automatic identification method, system and crane

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application with the application number 2020107338601 filed on July 24, 2020 and the invention title is "Counterweight Automatic Identification Method, System and Crane", which is incorporated herein by reference in its entirety.

technical field

The present application relates to the technical field of cranes, and in particular, to a method, system and crane for automatic identification of counterweights.

Background technique

The counterweight is one of the important components of the crane, which has the functions of balancing the load, improving the stability of the whole vehicle, and enhancing the lifting characteristics.

At present, most of the calculation methods of the crane counterweight mainly adopt the following method: after the crane is counterweighted, the force value of each outrigger of the crane is obtained by detecting the outrigger pressure sensor, and the force value of each outrigger is added up. , Obtain the self-weight of the crane, subtract the net weight of the crane from the obtained self-weight of the crane, and obtain the counterweight of the crane. When the crane is operating, it is necessary to input the number and weight of the counterweight of the crane to the crane control system. The pressure detected by the pressure sensor may be affected by the pipeline The pressure is held back and leaked, which makes the pressure detection inaccurate, resulting in an error in the calculation of the counterweight of the crane.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a method and system for automatic identification of counterweights, which realizes the automatic detection of counterweights and improves the accuracy of identification of counterweights of cranes.

Another object of the present application is to provide a crane, the automatic identification system of the counterweight of the crane realizes the automatic detection of the counterweight of the crane, and improves the accuracy of the identification of the counterweight of the crane.

This application is achieved through the following technical solutions:

A first aspect of the present application provides a method for automatic identification of counterweights, comprising:

Obtain the identification information on the information identification code of each counterweight block, and obtain the total weight of the first counterweight according to the identification information;

acquiring the detection value of the outrigger pressure sensor, and acquiring the total weight of the second counterweight according to the detection value of the outrigger pressure sensor;

Obtain the difference between the total weight of the first counterweight and the total weight of the second counterweight, when the difference between the total weight of the first counterweight and the total weight of the second counterweight is within a preset range , and output the total weight of the first counterweight.

In an embodiment of the present application, the identification information includes the serial number of the counterweight, the weight of the counterweight, and the position of the counterweight.

In an embodiment of the present application, the first total weight of the counterweight includes the total weight of the left counterweight and the total weight of the right counterweight.

In an embodiment of the present application, the obtaining the identification information on the information identification code of each counterweight block includes:

The identification information on the information identification code of the counterweight block is obtained through radio frequency technology, or the identification information on the information identification code of the counterweight block is obtained through video identification technology.

In an embodiment of the present application, after obtaining the identification information on the information identification code of the counterweight block through radio frequency technology, or after obtaining the identification information on the information identification code of the counterweight block through video identification technology, it further includes: The identification information is transmitted through the CAN bus or the TCP protocol.

A second aspect of the present application provides an automatic identification system for counterweights, including:

A plurality of information identification codes are arranged on each weight block, and the information identification codes have identification information;

a first information reading module, used to obtain the identification information on the information identification code of each of the counterweight blocks;

The outrigger pressure sensor, arranged on the outrigger, is used to detect the pressure of the outrigger;

The second information reading module is used to obtain the detection value of the outrigger pressure sensor;

a calculation module, configured to obtain the total weight of the first counterweight according to the identification information, and also to obtain the total weight of the second counterweight according to the detection value of the outrigger pressure sensor;

The comparison module is used to obtain the difference between the total weight of the first counterweight and the total weight of the second counterweight, when the difference between the total weight of the first counterweight and the total weight of the second counterweight is in the pre- When within the set range, output the total weight of the first counterweight.

In an embodiment of the present application, the information identification code is a radio frequency electronic tag, and the first information reading module is a radio frequency reader;

Alternatively, the first information reading module includes a video acquisition module and an analysis processing module, the video acquisition module is used to collect the video information of the information identification code, and the analysis processing module is used to identify and analyze the video information .

A third aspect of the present application of the present invention provides a crane, wherein a counterweight block is placed on a counterweight placement platform of the crane, and the crane includes the above-mentioned automatic counterweight identification system.

The automatic counterweight identification method of the present application obtains the identification information on the information identification code of each counterweight block and then acquires the total weight of the first counterweight according to the identification information, acquires the detection value of the outrigger pressure sensor, and obtains the detection value of the outrigger pressure sensor according to the The detection value obtains the total weight of the second counterweight, and then compares the difference between the total weight of the first counterweight and the total weight of the second counterweight, when the difference between the total weight of the first counterweight and the total weight of the second counterweight is within a preset range within, output the total weight of the first counterweight. The automatic identification method of the counterweight compares the total weight of the first counterweight with the total weight of the second counterweight, and outputs the first counterweight when the difference between the total weight of the first counterweight and the total weight of the second counterweight is within a preset range The total weight of the counterweight improves the automation level of the crane operation and the accuracy of the output of the total weight of the first counterweight.

The automatic identification system for counterweights of the present application includes a plurality of information identification codes, outrigger pressure sensors, a first information reading module, a second information reading module, a calculation module and a comparison module, and the information identification codes are arranged on each counterweight block , the outrigger pressure sensor is arranged on the outrigger to detect the pressure of the outrigger, the first information reading module is used to obtain the identification information on the information identification code of each counterweight, and the second information reading module is used to obtain The detection value of the outrigger pressure sensor, the calculation module is used to obtain the total weight of the first counterweight according to the identification information, and is also used to obtain the total weight of the second counterweight according to the detection value of the outrigger pressure sensor, and the comparison module is used to obtain The difference between the total weight of the first weight and the total weight of the second weight, when the difference between the total weight of the first weight and the total weight of the second weight is within a preset range, the total weight of the first weight is output. The automatic identification system of the counterweight compares the total weight of the first counterweight with the total weight of the second counterweight, and when the difference between the total weight of the first counterweight and the total weight of the second counterweight is within a preset range, outputs the first counterweight The total weight of the counterweight improves the accuracy of the output of the total weight of the first counterweight and the automation level of the crane operation.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are For some embodiments of the present application, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a flowchart of a method for automatic identification of counterweights provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of the placement structure of the counterweight block of the automatic counterweight identification system of the crane provided by the embodiment of the present application;

FIG. 3 is a schematic structural diagram of a system for automatic identification of counterweights of a crane according to an embodiment of the present application.

Description of reference numbers:

10-Counterweight;

11-Information identification code;

12- the first information reading module;

13- the second information reading module;

14- calculation module;

15-Compare module;

16-Transmission module;

17 - Alarm module.

detailed description

In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is only a part of the embodiments of the present application, but not 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 creative work shall fall within the protection scope of the present application.

It should be understood that the terms "comprising" and "having" as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or modules is not necessarily limited to Those steps or modules expressly listed may instead include other steps or modules not expressly listed or inherent to the process, method, product or apparatus.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only For the convenience of describing the present application and simplifying the description, it is not indicated or implied that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application. Also, unless stated otherwise, "plurality" means two or more.

The existing crane counterweight information is generally obtained by setting pressure sensors on the outriggers, and by converting the pressure information into weight information. The force value of the legs is added to obtain the self-weight of the crane, and then the net weight of the crane is subtracted from the self-weight of the crane to obtain the counterweight of the crane. In the actual use process, the pressure detected by the pressure sensor will be inaccurate due to the pressure and leakage of the pipeline, and errors are prone to occur; when the crane is operating, it is necessary to input the crane's counterweight combination information to the crane's torque limiter. The number of the counterweights on hold needs to be visually recognized by the operator and manually input into the control system of the crane. Although this method is simple, it requires manual intervention and affects the automation level of the crane operation.

Based on the above problems, the present application proposes a method, system and crane for automatic identification of counterweights.

The method, system and crane for automatic identification of counterweight provided by the present application will be described in detail below with reference to specific embodiments.

1 is a flowchart of an automatic counterweight identification method provided by an embodiment of the present application. In the first aspect of the present embodiment, the automatic counterweight identification method of the present application is described in detail by taking the automatic counterweight identification method of a crane as an example. The automatic identification methods of counterweight include:

S11, obtain the identification information on the information identification code of each counterweight block, and obtain the total weight of the first counterweight according to the identification information;

Specifically, each counterweight block of the crane in this embodiment is provided with an information identification code, and each information identification code uniquely represents the serial number of the counterweight block, the weight of the counterweight block, and the position information of the counterweight block , wherein the serial number of the counterweight represents the installation sequence of the counterweight, the weight of the counterweight represents the weight of the counterweight, and the position information of the counterweight represents the installation position information of the counterweight, wherein the position information of the counterweight can be It is the left counterweight label or the right counterweight label. The counterweight block with the left counterweight label is placed on the left counterweight placement platform of the crane, and the counterweight block with the right counterweight label is placed on the right counterweight of the crane. on the platform. Wherein, the total weight of the first counterweight is the sum of the weights of all counterweight blocks.

S12, acquiring the detection value of the outrigger pressure sensor, and acquiring the total weight of the second counterweight according to the detection value of the outrigger pressure sensor;

Specifically, after the crane is counterweighted, the outrigger pressure sensor detects the force value of each outrigger, and the force value on each outrigger can be added to obtain the self-weight of the crane. Deducting the self-weight of the crane from the net weight of the crane is The total weight of the second counterweight can be obtained.

S13. Obtain the difference between the total weight of the first counterweight and the total weight of the second counterweight, when the difference between the total weight of the first counterweight and the total weight of the second counterweight is within a preset range When inside, output the total weight of the first counterweight.

Specifically, the total weight of the first counterweight is compared with the total weight of the second counterweight, and the difference between the total weight of the first counterweight and the total weight of the second counterweight is obtained. When the difference between the total weight of the second weight is within the preset range, it means that the total weight of the first weight identified by the information identification code is valid, and the first total weight of the weight is output.

The above-mentioned automatic identification method of the counterweight compares the total weight of the first counterweight and the total weight of the second counterweight during the counterweight identification process, when the difference between the total weight of the first counterweight and the total weight of the second counterweight is within the preset range. When inside, the total weight of the first counterweight is output, which improves the accuracy of outputting the total weight of the first counterweight. The total weight of the first counterweight is obtained through the identification information on the information identification code of each counterweight block, which improves the automation level of the crane operation.

Further, the first total weight of the counterweight includes the total weight of the left counterweight and the total weight of the right counterweight. The automatic identification method of the counterweight outputs the total weight of the left counterweight and the total weight of the right counterweight. After obtaining the total weight of the left counterweight and the total weight of the right counterweight, the crane control system can identify the total weight of the left counterweight when the crane lifts heavy objects. And the total weight of the right counterweight, the crane control system combined with the total weight of the left counterweight and the total weight of the right counterweight can control the work of the crane more safely, better guide the action of the boom, and improve the safety of the crane operation.

On the basis of the above embodiment, further, in order to avoid the calculation error of the total weight of the first counterweight and affect the calculation result of the torque limit value in the later stage, the automatic counterweight identification method of this embodiment is used in the acquisition of the outrigger pressure sensor. detection value, after obtaining the total weight of the second counterweight according to the detection value of the outrigger pressure sensor, the method further includes comparing the total weight of the first counterweight with the total weight of the second counterweight, when the first counterweight When the difference between the total weight and the total weight of the second counterweight is not within the preset range, an alarm is issued. For example, when the difference between the total weight of the first counterweight and the total weight of the second counterweight is not within the preset range, the abnormality can be prompted by a text alarm on the display screen, or the abnormality can be prompted by a buzzer , after the operator obtains the alarm information, check again whether the identification information on the information identification code of each counterweight is correctly acquired or adjust the position of each sensor to obtain the total weight of the first counterweight, the total left counterweight and the right counterweight Normal value for gross weight.

Optionally, reading the identification information on the information identification code of each counterweight block in this embodiment includes: acquiring the identification information on the information identification code of the counterweight block through radio frequency technology, or acquiring the counterweight through video recognition technology. The identification information on the information identification code of the block. Specifically, the information identification code is set as a radio frequency electronic tag, the identification information of the counterweight is pre-written in the radio frequency electronic tag, the identification information on the radio frequency electronic tag is read by a radio frequency reader, and the radio frequency electronic tag wirelessly feeds back the pre-written identification information As for radio frequency readers, this radio frequency technology has the characteristics of non-contact, fast reading speed, unaffected by the environment, long life, easy to use, and can process multiple radio frequency electronic tags at the same time. Alternatively, the identification information on the information identification code of the counterweight block can be obtained through video recognition technology. For example, after the identification information on the information identification code can be captured by the camera, the identification information captured by the camera can be analyzed and calculated to obtain the total weight of the first counterweight. Weight, total left counterweight, and total right counterweight.

Further, in order to ensure that the identification information on the information identification code of each counterweight block is obtained without omission, after acquiring the identification information on the information identification code of each counterweight block, it also includes: judging whether all counterweights on the crane are read. The identification information on the information identification code of the block, if the identification information on the information identification code of all the counterweight blocks is not read, continue to issue a read command until the identification information on the information identification code of all the counterweight blocks is read.

Preferably, after obtaining the identification information on the information identification code of the counterweight block through radio frequency technology, or after obtaining the identification information on the information identification code of the counterweight block through video identification technology, the method further includes: through CAN bus or TCP protocol The identification information is transmitted. In this embodiment, the identification information is transmitted through the CAN bus, and the data transmitted by the CAN bus has the characteristics of strong real-time performance, strong anti-electromagnetic interference capability, and low cost, and can work in a high-noise interference environment.

The automatic identification method of the counterweight compares the difference between the total weight of the first counterweight and the total weight of the second counterweight, and outputs when the difference between the total weight of the first counterweight and the total weight of the second counterweight is within a preset range. The total weight of the first counterweight improves the accuracy of the output of the total weight of the first counterweight, wherein the total weight of the first counterweight includes the total weight of the left counterweight and the total weight of the right counterweight, and the crane control system combines the total weight of the left counterweight and the The total weight of the right counterweight can control the work of the crane more safely, and improve the automation level and safety of the crane operation.

FIG. 2 is a schematic structural diagram of the placement of the counterweight blocks of the automatic counterweight identification system of the crane provided by the embodiment of the application, and FIG. 3 is a schematic structural diagram of the automatic counterweight identification system of the crane provided by the embodiment of the application. Please refer to FIG. 2 and FIG. 3 As shown, the second aspect of the present embodiment provides a kind of automatic identification system of counterweight, and the automatic identification system of counterweight is introduced by taking the automatic identification system of counterweight as an example, and the automatic identification system of counterweight includes: information identification code 11 , a first information reading module 12 , a leg pressure sensor, a second information reading module 13 , a calculation module 14 and a comparison module 15 .

The information identification code 11 is arranged on each counterweight block 10. Only the counterweight block on the right counterweight placement platform is shown in FIG. 2, and the information identification code 11 is provided with the counterweight identification information corresponding to the counterweight block 10. . Specifically, in this embodiment, the identification information includes the weight of the current counterweight, the serial number of the counterweight, and the position information of the counterweight, and the positional information of the counterweight includes the left counterweight label and the right counterweight label, with The counterweight block with the left counterweight label is placed on the left counterweight placement platform of the crane, and the counterweight block with the right counterweight label is placed on the right counterweight placement platform of the crane.

The first information reading module 12 is used to obtain the identification information on the information identification code of each of the counterweight blocks 10; this embodiment does not specifically limit the specific manner in which the first information reading module 12 obtains the identification information;

The second information reading module 13 is used for acquiring the detection value of the outrigger pressure sensor, and the second information reading module 13 is electrically connected with the outrigger pressure sensor.

The calculation module 14 is used to obtain the total weight of the first counterweight according to the identification information, and is also used to obtain the total weight of the second counterweight according to the detection value of the outrigger pressure sensor; wherein, the total weight of the first counterweight is all The sum of the weights of the counterweights. After the crane is counterweighted, the outrigger pressure sensor detects the force value of each outrigger, and the force value on each outrigger can be added to obtain the self-weight of the crane. The total weight of the two counterweights.

The comparison module 15 is used to obtain the difference between the total weight of the first counterweight and the total weight of the second counterweight, when the difference between the total weight of the first counterweight and the total weight of the second counterweight is in the When within the preset range, output the total weight of the first counterweight.

In this embodiment, specifically, the counterweight block 10 is placed on the left counterweight placement platform and the right counterweight placement platform of the crane, the information identification code 11 is set on a specific position of the counterweight block 10, and each information identification code 11 The serial number of the counterweight, the weight of the counterweight, and the position information of the counterweight are uniquely represented, and the number of the counterweight is not particularly limited in this embodiment.

The automatic identification system of the counterweight in this embodiment includes a plurality of information identification codes, outrigger pressure sensors, a first information reading module, a second information reading module, a calculation module and a comparison module, and the information identification codes are set on each counterweight block. The outrigger pressure sensor is arranged on the outrigger and is used to detect the pressure of the outrigger. The first information reading module is used to obtain the identification information on the information identification code of each said counterweight, and the second information reading module a calculation module for acquiring the detection value of the outrigger pressure sensor, for acquiring the total weight of the first counterweight according to the identification information, and for acquiring the total weight of the second counterweight according to the detection value of the outrigger pressure sensor, The comparison module is used to obtain the difference between the total weight of the first counterweight and the total weight of the second counterweight, when the difference between the total weight of the first counterweight and the total weight of the second counterweight is in the pre- When within the set range, output the total weight of the first counterweight. The automatic identification system of the counterweight obtains the difference between the total weight of the first counterweight and the total weight of the second counterweight, and outputs the output when the difference between the total weight of the first counterweight and the total weight of the second counterweight is within a preset range The total weight of the first counterweight improves the output accuracy of the total weight of the first counterweight and the automation level of the crane operation.

Further, the first total weight of the counterweight includes the total weight of the left counterweight and the total weight of the right counterweight. The total weight of the left counterweight is the total weight of the counterweight blocks located on the left counterweight placement platform, and the total weight of the right counterweight is the total weight of the counterweight blocks located on the right counterweight placement platform. The automatic identification system of the counterweight can output the total weight of the left counterweight and the total weight of the right counterweight. After obtaining the total weight of the left counterweight and the total weight of the right counterweight, the crane control system can identify the total weight of the left counterweight when the crane lifts heavy objects. The total weight of the heavy weight and the right counterweight can better guide the boom action and improve the automation level and safety of the crane operation.

Optionally, the information identification code 11 is a radio frequency electronic tag, and the first information reading module 12 is a radio frequency reader; or, the first information reading module 12 includes a video acquisition module and an analysis and processing module, so The video collection module is used to collect the video information of the information identification code, and the analysis processing module is used to identify and analyze the video information. In this embodiment, the information identification code 11 is a radio frequency electronic tag, and the first information reading module 12 is a radio frequency reader; between the radio frequency electronic tag and the radio frequency reader, a space for radio frequency signals is realized through a coupling element (no contact ) coupling, in the coupling channel, according to the time sequence relationship, to achieve energy transmission and data exchange, this embodiment uses the radio frequency identification technology, adopts the non-contact way to realize the identification of the weight information, is not affected by the environment, and has a long service life.

Further, the automatic identification system for counterweights in this embodiment also includes a transmission module 16, which is used to transmit the identification information through the CAN bus or the TCP protocol after acquiring the identification information on the information identification code of each of the counterweight blocks. The identification information is sent to the calculation module 14, and the transmission module of this embodiment is used to transmit the identification information to the calculation module through the CAN bus or the TCP protocol after obtaining the identification information on the information identification code of the counterweight block through radio frequency technology. , Preferably, the transmission module of this embodiment transmits the identification information through the CAN bus, and the CAN bus transmission data has the characteristics of strong real-time performance, strong anti-electromagnetic interference capability, low cost, and can work in a high noise interference environment.

Further, in order to avoid the calculation error of the total weight of the first counterweight and affect the calculation result of the torque limit value in the later stage, the automatic counterweight identification system of this embodiment further includes an alarm module 17, and the alarm module 17 is used for when the first counterweight is used. When the difference between the total weight of the first counterweight and the total weight of the second counterweight is not within a preset range, an alarm is issued. For example, the abnormality can be indicated by a text alarm on the display screen, or a buzzer can be used to remind the abnormality. After the operator obtains the alarm information, check again whether the identification information on the information identification code 11 of each counterweight 10 is correctly obtained or adjusted. The position of each outrigger pressure sensor to obtain the normal value of the total weight of the first counterweight.

A third aspect of this embodiment provides a crane. A counterweight block is placed on a counterweight placement platform of the crane in this embodiment, and the crane includes the counterweight automatic identification system described in the second embodiment.

For example: the automatic identification system of the counterweight includes: an information identification code, which is arranged on each counterweight block, and the information identification code has identification information;

Optionally, the crane is a wheeled crane or a crawler crane.

The automatic identification system of the counterweight of the crane in this embodiment improves the accuracy of the output of the total weight of the first counterweight of the crane, and improves the automation level and safety of the crane operation.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. Scope.

Claims

A kind of automatic identification method of counterweight, is characterized in that, comprises:

Obtain the identification information on the information identification code of each counterweight block, and obtain the total weight of the first counterweight according to the identification information;

acquiring the detection value of the outrigger pressure sensor, and acquiring the total weight of the second counterweight according to the detection value of the outrigger pressure sensor;

Obtain the difference between the total weight of the first counterweight and the total weight of the second counterweight, when the difference between the total weight of the first counterweight and the total weight of the second counterweight is within a preset range , and output the total weight of the first counterweight.
The automatic identification method of counterweight according to claim 1, wherein,

The identification information includes the serial number of the counterweight, the weight of the counterweight and the position of the counterweight.
The automatic identification method of the counterweight according to claim 2, wherein the total weight of the first counterweight includes the total weight of the left counterweight and the total weight of the right counterweight.
The method for automatic identification of counterweights according to claim 1, wherein the acquisition of the identification information on the information identification code of each counterweight block comprises:

The identification information on the information identification code of the counterweight block is obtained through radio frequency technology, or the identification information on the information identification code of the counterweight block is obtained through video identification technology.
The automatic identification method of the counterweight according to claim 4, wherein the identification information on the information identification code of the counterweight block is obtained by radio frequency technology, or the information identification code of the counterweight block is acquired by video recognition technology After the identification information above, it also includes: transmitting the identification information through the CAN bus or the TCP protocol.
A kind of automatic identification system of counterweight, is characterized in that, comprises:

an information identification code, which is arranged on each weight block, and the information identification code has identification information;

a first information reading module, used to obtain the identification information on the information identification code of each of the counterweight blocks;

The outrigger pressure sensor, arranged on the outrigger, is used to detect the pressure of the outrigger;

The second information reading module is used to obtain the detection value of the outrigger pressure sensor;

a calculation module, configured to obtain the total weight of the first counterweight according to the identification information, and also to obtain the total weight of the second counterweight according to the detection value of the outrigger pressure sensor;

The comparison module is used to obtain the difference between the total weight of the first counterweight and the total weight of the second counterweight, when the difference between the total weight of the first counterweight and the total weight of the second counterweight is in the pre- When within the set range, output the total weight of the first counterweight.
The automatic identification system of counterweight according to claim 6, wherein,

The identification information includes the serial number of the counterweight, the weight of the counterweight and the position of the counterweight.
The automatic identification system of the counterweight according to claim 6, wherein the total weight of the first counterweight includes the total weight of the left counterweight and the total weight of the right counterweight.
The automatic identification system for counterweights according to claim 6, wherein the information identification code is a radio frequency electronic tag, and the first information reading module is a radio frequency reader;

Or, the first information reading module includes a video acquisition module and an analysis processing module, the video acquisition module is used to collect the video information of the information identification code, and the analysis processing module is used to identify and analyze the video information .
A crane, characterized in that a counterweight block is placed on a counterweight placement platform of the crane, and the crane includes the counterweight automatic identification system according to any one of claims 6-9.