A JIT production line and production method based on quantum communication time system

Abstract

The present invention belongs to the technical field of fully automatic production, and specifically relates to a JIT production line and a production method based on quantum communication time system. The present invention performs time system on each JIT execution robot on the production line based on quantum communication, which greatly improves the anti-interference ability and accuracy of the time system, improves the time correlation of control signals and operation data feedback signals, and improves the overall control efficiency and timeliness of the JIT switchboard on the production line. In terms of time system, the JIT production line can be supported to be infinitely expanded, so that JIT, the most ideal and most vital new production system, is suitable for establishing large-scale, high-precision, and complex process processing production lines, breaking the barrier that the existing JIT is only applicable to small batches and simple processes. In addition, the present invention can use the Beidou satellite system for basic time synchronization.

Description

Technical Field

[0001] The present invention belongs to the technical field of fully automatic production, and specifically relates to a JIT production line and a JIT production method based on quantum communication time system. Background Art

[0002] JIT (just in time / stock-free production method) is regarded as one of the most ideal and vital new production systems in today's manufacturing industry. In order to avoid inventory, equipment and personnel are first eliminated and adjusted to achieve the purpose of reducing costs, simplifying plans and improving control. In terms of production site control technology, the basic principle of just-in-time is to produce the right number of parts or products at the right time, and to produce them in real time. However, no matter how the personnel are adjusted and trained, their timeliness is difficult to fully control. When a timeliness failure occurs in JIT, an efficient production method, the fragile balance of JIT will be broken.

[0003] With the development of communication technology and automatic production technology, JIT has been redefined. If a large number of JIT execution robots are used for assembly line production and transportation, the time deviation caused by manual operation can be avoided, ensuring the timeliness of JIT. A large number of sensor parameters will be generated during the coordinated operation of multiple JIT execution robots. The time correlation between the parameters is the basis for ensuring the normal operation of the JIT fully automatic production line. In the existing technology, pulse wave signals are usually used to achieve the time scale unification of each component inside a single JIT execution robot, and the time scale unification between the host computers of each JIT execution robot is achieved based on the Internet of Things. The anti-interference ability and time accuracy are limited, which can be applied to small JIT production lines or JIT production lines with low process precision requirements. When the JIT production line is expanded or electrochemical precision manufacturing is carried out, the communication distance becomes longer and the time accuracy requirements are higher. The time synchronization method based on the Internet of Things + pulse wave signals is no longer applicable. The existing JIT production line is only suitable for small batches and simple process production. Summary of the invention

[0004] In view of this, the present invention proposes a JIT production line based on quantum communication time system, which uses a quantum communication-based method to perform time system on each JIT execution robot on the production line, greatly improving the anti-interference ability and accuracy of the time system, improving the time correlation of the control signal and the operation data feedback signal, and improving the overall control efficiency and timeliness of the JIT switchboard to the JIT execution robot. In terms of time system, it can support the unlimited expansion of the JIT production line, making JIT, the most ideal and most vital new production system, suitable for establishing large-scale, high-precision, complex process processing production lines, breaking the barrier that the existing JIT is only suitable for small batches and simple processes.

[0005] In order to achieve the above technical objectives, the specific technical solutions adopted by the present invention are:

[0006] A JIT production line based on quantum communication, comprising:

[0007] The JIT switchboard is equipped with a time-stamp encoding module, a quantum key writing device and a switchboard quantum key; and is used to generate encoded time information based on the time-stamp encoding module, and write the encoded time information into the switchboard quantum key based on the quantum key writing device;

[0008] The JIT execution robot is configured with a terminal quantum key, a quantum key reading device, a time-scale decoding module and a feedback module; and is used to read the encoded time information based on the quantum key reading device, transmit the encoded time information to the time-scale decoding module for decoding to generate decoded time information, and execute the JIT production command based on the time-scaled effectiveness of the decoded time information;

[0009] Wherein: the feedback module is used to collect the execution parameters of the JIT execution robot after the JIT production command is executed in a timely manner, and calibrate the execution parameters based on the decoded time information to generate time parameters;

[0010] The JIT execution robot is also used to transmit the timeliness parameter to the JIT switchboard.

[0011] Furthermore, the method for generating the aging parameters is specifically as follows:

[0012] S101: dividing the execution parameter into a plurality of instantaneous parameters according to the execution node of the JIT execution robot;

[0013] S102: Collecting decoded time information at each execution node and encoding it to generate encoded node time information;

[0014] S103: Packing the encoded node time information with the corresponding instantaneous parameters respectively to generate multiple time-effect parameters.

[0015] Further, the JIT production command is generated based on the JIT switchboard, and the JIT switchboard transmits the JIT production command to the JIT execution robot based on a control bus;

[0016] The JIT execution robot transmits the timeliness parameter to the JIT switchboard based on the production bus.

[0017] Furthermore, the carrier of the encoded time information transmitted from the time-scale encoding module to the quantum key writing device is a pulse square wave.

[0018] Furthermore, the time-scale encoding module is based on the timing of a Beidou satellite signal receiver; the Beidou satellite signal receiver includes:

[0019] Receiving antenna, receiving time data and position data from at least three Beidou satellites;

[0020] A positioning terminal, calculating the absolute position of the Beidou satellite signal receiver based on each of the position data;

[0021] The satellite clock server obtains absolute time data based on the absolute position and each of the time data, and communicates with the JIT switchboard.

[0022] Furthermore, the satellite clock server communicates with the JIT switchboard based on quantum keys.

[0023] At the same time, the present invention also proposes a JIT production method based on the above-mentioned JIT production line, in which at least two groups of the JIT production lines that cooperate with each other in production processes perform JIT production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of a JIT production line module based on quantum communication time system in a specific implementation mode of the present invention;

[0025] Figure 2 It is a schematic diagram of a flow chart of transferring the time-effect parameter to the JIT execution robot control module in a specific implementation mode of the present invention;

[0026] Among them: 1. JIT switchboard; 11. Time-stamp encoding module; 12. Quantum key writing device; 13. Switchboard quantum key; 2. JIT execution robot; 21. Terminal quantum key; 22. Quantum key reading device; 23. Time-stamp decoding module; 24. Feedback module; 3. Beidou satellite signal receiver. DETAILED DESCRIPTION

[0027] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0028] In one embodiment of the present invention, a JIT production line based on quantum communication time system is proposed, such as Figure 1 As shown, including:

[0029] In one embodiment of the present invention, a JIT production line based on quantum communication time system is proposed, such as Figure 1 As shown, including:

[0030] The JIT switchboard terminal 1 is equipped with a time-stamp encoding module 11, a quantum key writing device 12 and a switchboard quantum key 13; and is used to generate encoded time information based on the time-stamp encoding module 11, and write the encoded time information into the switchboard quantum key 13 based on the quantum key writing device 12;

[0031] The JIT execution robot 2 is equipped with a terminal quantum key 21, a quantum key reading device 22, a time-scale decoding module 23 and a feedback module 24; it is used to read the encoded time information based on the quantum key reading device 22, transmit the encoded time information to the time-scale decoding module 23 for decoding to generate decoded time information, and execute the JIT production command based on the time-scale effectiveness of the decoded time information;

[0032] Wherein: the feedback module 24 is used to collect the execution parameters after the JIT execution robot 2 executes the JIT production command in a timely manner, and calibrate the execution parameters based on the decoded time information to generate time parameters;

[0033] The JIT execution robot 2 is also used to transmit the timeliness parameters to the JIT switchboard terminal 1.

[0034] The JIT switchboard end 1 of the present embodiment is the control end of the entire JIT production line, and is internally provided with control logic, error correction logic, feedback recording logic, etc. for controlling each JIT execution robot 2 on the production line; based on the stored JIT production commands, JIT production commands are sent to each JIT execution robot 2 (through the control bus or the switchboard quantum key 13), and the production progress and whether a fault occurs or fault information is analyzed based on the execution parameters fed back by a large number of sensors (feedback module 24) installed on the JIT execution robot 2, so that the entire JIT production line can carry out orderly production with high timeliness and high time accuracy.

[0035] The control module of the JIT execution robot 2 of this embodiment communicates with each action execution mechanism based on the control line of the JIT execution robot 2. Since the communication distance is short, the time delay can be ignored.

[0036] The time-scale encoding module 11 and the time-scale decoding module 23 of this embodiment are implemented using existing technologies. The number of the switchboard quantum key 13 is not limited, and can be set one-to-one or one-to-many; the quantum stored in the terminal quantum key 21 and the switchboard quantum key 13 are entangled with each other. When the quantum is entangled, if the state of one changes, the state of the other will also change instantly, without the need for transmission medium and transmission time.

[0037] In the JIT production line, there are a large number of JIT execution robots 2 that cooperate with each other. At the same time, the number of feedback modules 24 carried by each JIT execution robot 2 is huge, and the amount of feedback data is huge. The timeliness requirements for the cooperation between the JIT robots are very strict, and a small delay will also have a very serious impact on the production timeliness of the JIT production line. On the JIT robot automatic production line, all production commands (JIT production commands) and execution feedback data (that is, the execution parameters of this embodiment) need to be accompanied by time stamp information to have execution value and reference value. The JIT robot needs to execute related actions in real time according to the JIT production command with a time stamp. At the same time, the JIT switchboard end 1 needs to judge the production progress, execution results and faults in real time based on the feedback data (execution parameters) with a time stamp.

[0038] In order to ensure the data transmission rate and anti-interference ability, the timing device of the existing JIT production line uses a production bus to transmit time stamp information to each JIT execution robot 2. When the production line is too long and the processes are numerous, the distance of the production bus becomes longer, the anti-interference ability decreases, and data loss is prone to occur. In order to ensure the transmission rate and signal strength of the time stamp information, a relay station will be set to enhance the time stamp signal, and the relay station will cause delays in the transmission of the time stamp signal. Therefore, the time accuracy of the feedback data is low. The switchboard end of the JIT production line can only judge the production progress, execution results and faults based on the set threshold method, which is not conducive to the JIT production line to achieve its underlying purpose of simplifying planning, improving control and just-in-time production, and can only complete small-scale, small-batch and simple process production.

[0039] This embodiment uses quantum communication to synchronize the time of each JIT execution robot 2 on the production line, which greatly improves the anti-interference ability and accuracy of the time system, improves the time correlation of JIT production commands and execution parameters, and improves the overall control efficiency and timeliness of the JIT switchboard over the production line. In terms of time system, it can support unlimited expansion of JIT production lines, making JIT, the most ideal and most vital new production system, suitable for establishing large-scale, high-precision, and complex process processing production lines, breaking the engineering barrier that existing JIT is only applicable to small batches and simple processes.

[0040] In this embodiment, if Figure 2 As shown, the method of generating the time-effect parameter and transmitting it to the JIT switchboard terminal 1 is specifically as follows:

[0041] S101: dividing the execution parameter into a plurality of instantaneous parameters according to the execution node of the JIT execution robot 2;

[0042] S102: Collecting decoded time information at each execution node and encoding it to generate encoded node time information;

[0043] S103: Packing the encoded node time information with the corresponding instantaneous parameters respectively to generate multiple time-effect parameters.

[0044] S104: The time-effect parameters are transmitted to the JIT execution robot 2 based on the control bus.

[0045] After S104 of this embodiment, the JIT execution robot 2 decodes the encoded node time information to obtain high timeliness.

[0046] In this embodiment, the JIT production command is generated based on the JIT switchboard terminal 1, and the JIT switchboard terminal 1 transmits the JIT production command to the JIT execution robot 2 based on the control bus; the JIT execution robot 2 transmits the timeliness parameter to the JIT switchboard terminal 1 based on the production bus.

[0047] In one embodiment, in order to reduce the communication cost of the JIT production line, the number of quantum keys can be appropriately reduced. Since the time scales of all timing parameters have been unified with the JIT production line, the transmission effectiveness does not affect the specific production. The timing parameters are transmitted to the JIT execution robot 2 based on the control bus of the production line.

[0048] In some embodiments, the timeliness parameters are transmitted to the JIT execution robot 2 based on quantum key communication.

[0049] In one embodiment, the carrier of the encoded time information transmitted from the time-scale encoding module 11 to the quantum key writing device 12 is a pulse square wave. This embodiment adopts the traditional time-scale signal transmission method, which can reduce the overall system improvement amount.

[0050] In one embodiment, the production line is based on Beidou satellite signal receiver 3 for timing; Beidou satellite signal receiver 3 includes:

[0051] Receiving antenna, receiving time data and position data from at least three Beidou satellites;

[0052] A positioning terminal calculates the absolute position of the Beidou satellite signal receiver 33 based on each position data;

[0053] The satellite clock server obtains absolute time data based on the absolute position and various time data, and communicates with the JIT switchboard terminal 1.

[0054] When a production workshop has multiple JIT production lines that cooperate with each other, a unified time scale is also required between each production line. This embodiment uses the RDSS timing method of my country's Beidou satellite system to perform absolute time timing on the JIT switchboard terminal 1, which can further improve the timeliness between a single JIT production line and multiple JIT production lines that cooperate with each other.

[0055] In one embodiment, the satellite clock server communicates with the JIT switchboard terminal 1 based on quantum keys.

[0056] In one embodiment of the present invention, a JIT production method is proposed, and JIT production is performed based on at least two groups of JIT production lines that cooperate with the production process. Due to the scale limitation of the workshop and the high time integration of the JIT production line of the present invention, some complex process production lines can be divided into at least two groups of JIT production lines to cooperate with each other in production, so as to reduce the data processing volume of a single JIT switchboard terminal 1; the JIT production lines of this embodiment can be directly connected by a transmission belt or the material can be transported by a handling robot controlled by the JIT switchboard terminal 1. The above is only a specific implementation method of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present disclosure should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A JIT production line based on quantum communication, characterized in that: include: The JIT switchboard is equipped with a time-stamp encoding module, a quantum key writing device and a switchboard quantum key; and used to generate encoded time information based on the time-scale encoding module, and write the encoded time information into the switchboard quantum key based on the quantum key writing device; The JIT execution robot is configured with a terminal quantum key, a quantum key reading device, a time-scale decoding module and a feedback module; and is used to read the encoded time information based on the quantum key reading device, transmit the encoded time information to the time-scale decoding module for decoding to generate decoded time information, and execute the JIT production command based on the time-scaled effectiveness of the decoded time information; Wherein: the feedback module is used to collect the execution parameters after the JIT execution robot executes the JIT production command, and calibrate the execution parameters based on the decoded time information to generate time-effectiveness parameters; The JIT execution robot is also used to transmit the timeliness parameter to the JIT switchboard.

2. The JIT production line according to claim 1, characterized in that: The method for generating the aging parameters is specifically as follows: S101: dividing the execution parameter into a plurality of instantaneous parameters according to the execution node of the JIT execution robot; S102: Collecting decoded time information at each execution node and encoding it to generate encoded node time information; S103: Packing the encoded node time information with the corresponding instantaneous parameters respectively to generate multiple time-effect parameters.

3. The JIT production line according to claim 2, characterized in that: The JIT production command is generated based on the JIT switchboard, and the JIT switchboard transmits the JIT production command to the JIT execution robot based on a control bus; The JIT execution robot transmits the timeliness parameter to the JIT switchboard based on the production bus.

4. The JIT production line according to claim 2, characterized in that: The carrier of the encoded time information transmitted from the time-scale encoding module to the quantum key writing device is a pulse square wave.

5. The JIT production line according to claim 1, characterized in that: The time-scale encoding module is based on the timing of the Beidou satellite signal receiver; the Beidou satellite signal receiver includes: Receiving antenna, receiving time data and position data from at least three Beidou satellites; A positioning terminal, calculating the absolute position of the Beidou satellite signal receiver based on each of the position data; The satellite clock server obtains absolute time data based on the absolute position and each of the time data, and communicates with the JIT switchboard.

6. The JIT production line according to claim 5, characterized in that: The satellite clock server communicates with the JIT switchboard based on quantum keys.

7. A JIT production method according to any one of claims 1 to 6, characterized in that: At least two groups of JIT production lines that cooperate with each other based on production processes carry out JIT production.

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