CN110058815B - A control system and its data dynamic partition storage and retrieval method - Google Patents

Abstract

The invention discloses a control system and a data dynamic partition storage and retrieval method thereof, which comprise the following steps: a. receiving a configuration packet; b. dividing the memory into a plurality of basic data storage areas adapted to each functional device according to basic data configuration information in the configuration packet; c. if the command packet is received in the preset waiting period, entering the step d, and if the command packet is not received in the preset waiting period, entering the step g; d. ending the previous memory partition mode, analyzing the command packet, extracting control configuration information in the configuration packet according to the command packet, subdividing the memory into a plurality of control storage areas adapted to each functional device according to the control configuration information, and entering step g; g. according to the memory partition condition obtained in the step b or the step d, storing, retrieving and distributing data; the memory is readjusted and distributed in time, so that the utilization rate of the memory area is improved, and the condition of jump area storage is reduced.

Description

A control system and its data dynamic partition storage and retrieval method

technical field

The invention relates to the field of electronic storage, in particular to a method and system for data storage.

Background technique

In the process of data transmission, data storage is an important part. In the memory of the control system, the storage space is fixed. When the control system is connected to several functional devices, the functional devices here can be detection terminals, operation terminals, transmission Terminals, etc., basic data configuration information such as version data and identification data will be transmitted between the control system and functional devices, and control configuration information such as status detection data, command data, etc. may also be transmitted under the condition of command instructions. , the control system allocates the interior of the storage into several fixed storage spaces, the above-mentioned data partitions are stored in the storage, and the storage location is identified by the storage path, and finally each data is received or sent by the storage and each functional device;

However, data storage has the following defects in practical applications. Due to the fixed storage space, the control system issues commands to control various functional devices, resulting in changes in the read and write status, or the occurrence of new or deleted functional devices or the operation of functional devices. When changing, the structure of the storage area in the memory cannot be dynamically partitioned according to the actual working conditions of the control system, and the data sorting is prone to disorder, resulting in low storage and retrieval efficiency, and continuous storage cannot be achieved during data storage. Storage phenomenon, in most cases, these jump areas are basically in an idle state, wasting a lot of storage resources.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a storage and retrieval method that dynamically divides the storage space of the memory according to the operation of each functional device, the command issued to control the operation of the functional device, or the increase or decrease of each functional device. The method and the system applying the same are used to improve the utilization rate of the storage area and realize the substantial improvement of the data storage performance.

The technical scheme adopted in the present invention is:

A data dynamic partition storage and retrieval method of a control system, the control system can generate a configuration package according to the operation of each functional device and the control system can issue a command package for controlling the operation of the functional device, the configuration package includes basic data configuration information and control configuration information;

Include the following steps:

a. Wait for the configuration package to be received, and if the configuration package is received, enter step b;

b. Parse the configuration package, divide the memory into several basic data storage areas adapted to each functional device according to the basic data configuration information in the configuration package, and enter step c;

c, waiting to receive the command packet, if the command packet is received within the preset waiting period, then enter step d, if the command packet is not received within the preset waiting period, then enter step g;

d. End the previous memory partition mode, parse the command package, extract the control configuration information in the configuration package according to the command package, and re-divide the memory into several control storage areas adapted to each functional device according to the control configuration information, and enter the step g;

g. According to the memory partition situation obtained in step b or step d, the control system and each functional device perform data storage, retrieval and distribution.

Between step d and step g, also include: e, detect whether the number of functional equipment changes, if there is a change, then enter step f, if there is no change, then enter step g;

f. End the previous memory partition mode, re-enter step a to receive a new configuration package, or generate data of a new configuration package on the basis of the original configuration package, and then enter step b.

The basic data configuration information includes receiving configuration information and sending configuration information, and the control configuration information includes command configuration information and state configuration information; in step b, according to the receiving configuration information and sending configuration information in the configuration package, the memory is divided into several A receiving data storage area adapted to each functional device and a plurality of sending data storage areas adapted to each functional device; in step d, the memory is re-divided into several and each functional device according to the command configuration information and the state configuration information. A command storage area adapted to each functional device and a number of state storage areas adapted to each functional device.

In step b, after the configuration packet is parsed, the receiving configuration information, sending configuration information, command configuration information and state configuration information in the configuration packet are latched into the register, and in step d, after receiving the command packet, from Command configuration information and state configuration information are extracted from the register.

The sending configuration information includes the length of configuration data corresponding to the number of each functional device; the receiving configuration information includes the length of the configuration feedback data corresponding to the number of each functional device; the command configuration information includes the number of the functional device. One-to-one corresponding command data lengths; the state configuration information includes command feedback data lengths one-to-one corresponding to the number of functional devices.

In step e, when a functional device is offline, in step f, according to the offline situation of each functional device, delete and offline from the configuration data length, configuration feedback data length, command data length and command feedback data length of the original configuration package the corresponding configuration data length, configuration feedback data length, command data length and command feedback data length corresponding to the functional device, and then enter step b.

In all steps, if the control system regenerates the configuration package, it returns to step a.

A control system applying a data dynamic partition storage and retrieval method, comprising a data packet determination module, a parsing cache module, an information collection feedback module and a partition drive module;

The partition drive module is respectively connected with the memory and each functional device;

The information collection feedback module is connected with the partition drive module to obtain the operation status of each functional device to generate a configuration package or to obtain a command package for issuing and controlling the operation of the functional device;

The data packet determination module is connected with the information collection feedback module to execute step a or step c, and determine whether the acquired data packet is a configuration packet or a command packet;

The parsing cache module is respectively connected with the data packet determination module and the partition drive module to perform the parsing of the configuration package in step b or the parsing of the command package in step d;

The partition drive module performs step b to partition the memory according to the basic data configuration information of the configuration package, or executes the previous memory partition mode in step d in the case of receiving the command package, and partitions the memory according to the control configuration information of the configuration package. , and can perform data storage, retrieval and distribution with each functional device according to the memory partition situation obtained from step b or step d in step g.

The parsing cache module also includes a register, the basic data configuration information includes receiving configuration information and sending configuration information, and the control configuration information includes command configuration information and state configuration information; in step b, after the configuration packet is parsed, the register will configure The receiving configuration information, the sending configuration information, the command configuration information and the state configuration information in the packet are latched, and in step d, the command configuration information and the state configuration information can be extracted from the register.

The registers include four and each register correspondingly stores one of receiving configuration information, sending configuration information, command configuration information and state configuration information.

Beneficial effects of the present invention:

The data dynamic partition storage and retrieval method and control system of the present invention distinguish data by generating configuration packets and command packets, which is not easy to confuse data, and has high bandwidth utilization. In this case, only the basic data configuration information is initially extracted, allocated to the memory according to the basic data configuration information and automatically partitioned, and under the control of the control system, there are cases of issuing command instructions and receiving detection data, thereby generating command packets. , so as to extract the control configuration information, and timely readjust and allocate the partitions in the memory according to the control configuration information, improve the utilization rate of the storage area, and reduce the situation of skipping storage;

In addition, the data changes of functional devices are detected. When the number of functional devices increases or decreases, a new configuration package will be received to expand the number of functional devices. If the number decreases, it can be deleted from the original configuration package. It is simple and feasible and has a wide range of applications. Can meet the different requirements of the system.

Description of drawings

The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

FIG. 1 is a flowchart of a storage and retrieval method according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a configuration packet data format and a command packet data format.

FIG. 3 is a schematic diagram of a dynamic partition change of a memory.

FIG. 4 is a schematic structural diagram of an embodiment of the present invention.

Detailed ways

As shown in Figure 1-Figure 3, a data dynamic partition storage and retrieval method of a control system, the control system can generate a configuration package according to the operation of each functional device and the control system can issue a command package for controlling the operation of the functional device, configure The package includes basic data configuration information and control configuration information, wherein the basic data configuration information here includes type information, version information, port information, identification number information, etc., and the control configuration information includes the control system issued by the control function device. Instructions or instructions to control functional devices to upload status detection data, etc.;

Wherein, the method for controlling the storage and retrieval process between the system and each functional device includes the following steps:

a. Wait for the configuration package to be received, and if the configuration package is received, enter step b;

b. Parse the configuration package, divide the memory into several basic data storage areas adapted to each functional device according to the basic data configuration information in the configuration package, and enter step c;

c, waiting to receive the command packet, if the command packet is received within the preset waiting period, then enter step d, if the command packet is not received within the preset waiting period, then enter step g;

d. End the previous memory partition mode, parse the command package, extract the control configuration information in the configuration package according to the command package, and re-divide the memory into several control storage areas adapted to each functional device according to the control configuration information, and enter the step e;

g. According to the memory partition situation obtained in step b or step d, the control system and each functional device perform data storage, retrieval and distribution.

This design distinguishes data by generating configuration packets and command packets, which is not easy to confuse the data, and has high bandwidth usage. In the configuration packet, the basic data configuration information and control configuration information are in the configuration packet. In the case of receiving the configuration packet, only the basic data configuration is initially extracted. Information, according to the basic data configuration information is allocated to the memory and automatically partitioned, and under the control of the control system, there are cases of issuing command instructions and receiving detection data, thereby generating command packets, thereby extracting control configuration information, according to the control configuration information The partition situation in the memory is readjusted and allocated in time, which improves the utilization rate of the storage area and reduces the situation of skipping storage.

In some embodiments, step d and step g can also be added:

e. Detect whether the number of functional devices has changed, if there is a change, go to step f, if there is no change, go to step g;

f. End the previous memory partition mode, re-enter step a to receive a new configuration package, or generate data of a new configuration package on the basis of the original configuration package and enter step b;

Here, the data changes of functional devices are detected. When the number of functional devices increases or decreases, a new configuration package is received for expansion when the number increases, and it can be deleted from the original configuration package when the number decreases. Can meet the different requirements of the system.

As shown in Figure 3, it can be seen that the dynamic partitioning is realized under different circumstances, and the storage area changes the data storage.

When the control system is connected to each functional device, a configuration package will be generated first, and the storage area will be partitioned according to the basic data configuration information in the configuration package to realize basic data upload and transmission. A command package and a new configuration package will be generated. In order to prevent the disorder of the processing flow, the control system determines whether the data is a configuration package or a command package. If it is a configuration package, it will go to step a, and if it is a command package, it will go to step c.

The basic data configuration information includes receiving configuration information and sending configuration information, and the control configuration information includes command configuration information and state configuration information;

The sending configuration information includes the length of configuration data corresponding to the number of each functional device; the receiving configuration information includes the length of the configuration feedback data corresponding to the number of each functional device; the command configuration information includes the command corresponding to the number of each functional device. Data length; the status configuration information includes the command feedback data length corresponding to the number of each functional device one-to-one.

As shown in FIG. 2 , the configuration packet Config Packet includes a packet header, receiving configuration information, sending configuration information, command configuration information and state configuration information arranged in sequence, and N functional devices are used as an example below.

The packet header can contain the packet type flag, port label, functional device number, functional device version information, error ID, total length of the packet header, etc.; the packet type flag is the configuration data format;

The sending configuration information includes the configuration data length CFG_lenth of N functional devices, arranged in sequence;

The received configuration information includes the feedback data length CFG_FDBK_lenth of N functional devices, which are arranged in sequence.

The command configuration information includes the command data length CMD_lenth of N functional devices, which are arranged in sequence.

The state configuration information includes the command feedback data length CMD_FDBK_lenth of N functional devices, which are arranged in sequence;

The command packet Command Packet includes packet header and command data. Here, the packet header of the command packet can be similar to the content of the configuration packet, and also includes the packet type flag, port label, functional device number, functional device version information, error ID, total length of the packet header, etc. , but in the command data format, so that the control system can recognize it, and the command data can trigger the control system to retrieve the command configuration information and state configuration information of the configuration package, thereby re-partitioning.

Correspondingly, in step b, according to the receiving configuration information and sending configuration information in the configuration package, the memory is divided into several receiving data storage areas adapted to each functional device and several transmission data adapted to each functional device. data storage area; in step d, the memory is re-divided into several command storage areas adapted to each functional device and several state storage areas adapted to each functional device according to the command configuration information and the state configuration information.

In some embodiments, in step b, after parsing the configuration packet, the receiving configuration information, sending configuration information, command configuration information and state configuration information in the configuration packet are latched into a register, and in step d, After receiving the command packet, extract the command configuration information and state configuration information from the register, and use the register to latch the data to prevent data loss during the running cycle.

In step e, when a functional device is offline, in step f, according to the offline situation of each functional device, delete and offline from the configuration data length, configuration feedback data length, command data length and command feedback data length of the original configuration package the corresponding configuration data length, configuration feedback data length, command data length and command feedback data length corresponding to the functional device, and then enter step b.

For example, in the initial state, there are N functional devices, and during operation, M functional devices are offline, and N>M, then the contents of the configuration package are N-M configuration data lengths, N-M configuration feedback data lengths, and N-M command data lengths. Length, N-M command feedback data length.

And, preferably, in step a-step g, as long as the control system regenerates the configuration package, it will return to step a, end the previous memory partitioning mode, and perform partitioning again.

As shown in FIG. 4 , a control system for applying data dynamic partition storage and retrieval method includes a data packet determination module 1, a parsing cache module 2, an information collection feedback module 3 and a partition drive module 4;

The partition drive module 4 is respectively connected with the memory and each functional device;

The information collection feedback module 3 is connected with the partition drive module 4 to obtain the operation status of each functional device to generate a configuration package or to obtain a command package for issuing and control the operation of the functional device or to perform step e;

The data packet determination module 1 is connected with the information collection feedback module 3 to execute step a or step c, and judges that the acquired data packet is a configuration packet or a command packet;

The parsing cache module 2 is respectively connected with the data packet determination module 1 and the partition drive module 4, to perform the parsing of the configuration package in step b or the parsing of the command package in step d;

The partition drive module 4 performs step b to partition the memory according to the basic data configuration information of the configuration package, or executes the previous memory partition mode in step d in the case of receiving the command package, and executes the memory partition method according to the control configuration information of the configuration package. partition, and can perform data storage, retrieval and distribution with each functional device according to the memory partition situation obtained in step b or step d in step g.

This control system can be realized based on FPGA (Field Programmable Gate Array), and applied to the selection layered system of power electronic control system. Cache and distribute to different functional devices (subsystems or submodules).

In some embodiments, the parsing cache module 2 further includes a register 21, the basic data configuration information includes receiving configuration information and sending configuration information, and the control configuration information includes command configuration information and state configuration information; in step b, the register 21 is configured in After the packet is parsed, the receiving configuration information, the sending configuration information, the command configuration information and the state configuration information in the configuration packet are latched, and in step d, the command configuration information and the state configuration information can be extracted from the register.

The registers 21 include four and each register correspondingly stores one of receiving configuration information, sending configuration information, command configuration information and state configuration information.

Wherein, the data packet determination module 1 is used to extract the packet type flag Type from the packet header of the received data packet, and determine whether the data packet belongs to the configuration packet or the command packet;

The parsing cache module 2 is used to parse out the data size of each functional device from the configuration package, that is, the configuration data length CFG_lenth in the configuration package, the configuration feedback data length CFG_FDBK_lenth, the command data length CMD_lenth, and the command feedback data length CMD_FDBK_lenth to reflect, Among them, these four lengths can be latched by registers, ready to be used for storage area partitioning;

The partition drive module 4 can be a partition engine, and the memory includes a sending storage area 51 and a receiving storage area 52 that are independent of each other, wherein the partition drive module and the storage can be integrated, and the sending storage area and the receiving storage area are connected to each functional device to achieve. Realize data transmission, and automatically and dynamically partition the two storage areas according to the four length information parsed by the parsing cache module;

The information collection and feedback module 3 is used to collect the online status information of the lower-level functional equipment. If the status of the functional equipment changes, the status of the functional equipment will be fed back to the upper-level control center in time, and the storage area will be dynamically partitioned again.

Among them, the data packet determination module 1 starts to operate when it receives the data packet header, and when there is no data packet transmission on the data line, the module is in an idle waiting state;

When the configuration package is sent for the first time, all the lower-level functional devices are configured online. During the dynamic partitioning process, the information collection and feedback module collects the actual online information of the lower-level functional devices, and then adjusts it again. Each CFG_lenth(x), CFG_FDBK_lenth( The values of x), CMD_lenth(x), and CMD_FDBK_lenth(x) are determined by the command length and feedback state length required by the lower-level functional device, and can also be dynamically configured. The parsing cache module 2 sequentially parses out the four sets of lengths, provides them to the partition engine, and latches them into the four sets of registers at the same time.

The following takes the configuration data length CFG_lenth as an example. There are N functional devices, and the N configuration data lengths are CFG_lenth(0)-CFG_lenth(N-1). When the received packet is a configuration packet, the storage area partition engine uses the length latch register CFG_lenth(0) to CFG_lenth(N-1) in the group column partition the sending storage area. If the length information changes, the last partitioning rule will be terminated, and the partition adjustment will be performed again to achieve the purpose of dynamic partitioning according to the actual situation. Similarly, the partition engine uses CFG_FDBK_lenth(0) to CFG_FDBK_lenth(N-1) in the length latch register bank column to partition the receiving storage area. If the length information changes, the last partitioning rule is terminated and the partition adjustment is performed again. After the partition is completed, the configuration information that needs to be sent to different lower-level functional devices is filled in the corresponding partition. When the task cycle arrives, the data is retrieved from the corresponding partition of the sending storage area and sent to the lower-level functional device through the bus. , the data uploaded by the lower-level functional device is uploaded to the corresponding partition of the receiving storage area through the bus, and the storage location in the receiving storage area can determine which lower-level functional device the group of data is uploaded by. When the received packet is a configuration packet, the command data length CMD_lenth and the command feedback data length CMD_FDBK_lenth are not used, and these two sets of length information are cached as default values for subsequent dynamic partitions. When the configuration package is received, that is, the control system completes the first system-wide configuration, enters the command phase, and starts to receive the command package. When the command package is received, the storage area partition engine starts to use the command length information to perform dynamic partition adjustment, that is, Use CMD_lenth(0) to CMD_lenth(N-1) to repartition the sending memory area, and use CMD_FDBK_lenth(0) to CMD_FDBK_lenth(N-1) to repartition the receiving memory area. This is a dynamic partitioning process. In the command packet transmission stage, the configuration packet can interrupt the transmission of the command packet at any time, and adjust the partition status of the storage area according to the current working status of the control system. Subordinate functional equipment command state length, etc.

The information collection and feedback module 3 collects the working conditions of the control system in a timely manner, makes statistics on the offline and online conditions of the lower-level functional equipment, processes the change requests of the lower-level functional equipment, and timely informs the control system of the health status of the lower-level functional equipment. Decide whether the storage area needs to be dynamically partitioned again, and inform the storage area dynamic partitioning engine to respond to dynamic partitioning in a timely manner through the configuration package.

This design improves the utilization of storage space, and can be implemented based on FPGA (Field Programmable Gate Array) and other systems, not limited to the previous storage chips. It has strong portability, and the workflow is clear and controllable. It is not only suitable for It can be used in the power electronics industry, and can be expanded to other fields, so as to obtain a wide range of engineering applications.

The above descriptions are only the preferred embodiments of the present invention, and the present invention is not limited to the above-mentioned embodiments, as long as the technical solutions that achieve the purpose of the present invention by basically the same means fall within the protection scope of the present invention.

Claims (10)

1. A data dynamic partition storage and retrieval method of a control system is characterized in that the control system generates a configuration packet according to the operation condition of each functional device and can issue a command packet for controlling the operation of the functional device, wherein the configuration packet comprises basic data configuration information and control configuration information;

the method comprises the following steps:

a. waiting for receiving the configuration packet, and entering the step b if the configuration packet is received;

b. c, analyzing the configuration packet, dividing the memory into a plurality of basic data storage areas adapted to each functional device according to basic data configuration information in the configuration packet, and entering the step c;

c. waiting for receiving the command packet, if the command packet is received in a preset waiting period, entering the step d, and if the command packet is not received in the preset waiting period, entering the step g;

d. ending the previous memory partition mode, analyzing the command packet, extracting control configuration information in the configuration packet according to the command packet, subdividing the memory into a plurality of control storage areas adapted to each functional device according to the control configuration information, and entering step g;

g. and d, storing, retrieving and distributing data according to the memory partition condition obtained in the step b or the step d.

2. The method of claim 1, further comprising between steps d and g: e. detecting whether the number of the functional equipment is changed, if so, entering a step f, and if not, entering a step g;

f. and c, ending the previous memory partition mode, re-entering the step a to receive a new configuration packet, or entering the step b after generating data of the new configuration packet on the basis of the original configuration packet.

3. The method of claim 2, wherein the method further comprises: the basic data configuration information comprises receiving configuration information and sending configuration information, and the control configuration information comprises command configuration information and state configuration information; in step b, dividing the memory into a plurality of receiving data storage areas adapted to each functional device and a plurality of sending data storage areas adapted to each functional device according to the receiving configuration information and the sending configuration information in the configuration packet; in step d, the memory is subdivided into a plurality of command memory areas adapted to each functional device and a plurality of status memory areas adapted to each functional device according to the command configuration information and the status configuration information.

4. The method of claim 3, wherein the method further comprises: in step b, after the configuration packet is analyzed, the receiving configuration information, the sending configuration information, the command configuration information and the state configuration information in the configuration packet are latched into the register, and in step d, after the command packet is received, the command configuration information and the state configuration information are extracted from the register.

5. The method of claim 3, wherein the method further comprises: the sending configuration information comprises configuration data lengths corresponding to the quantity of each functional device one by one; the receiving configuration information comprises configuration feedback data lengths corresponding to the quantity of each functional device one by one; the command configuration information comprises command data lengths corresponding to the number of the functional devices one by one; the state configuration information includes command feedback data lengths corresponding to the number of the functional devices one to one.

6. The method of claim 5, wherein the method further comprises: in step e, when a functional device is offline, in step f, according to the offline condition of each functional device, deleting the configuration data length, the configuration feedback data length, the command data length and the command feedback data length corresponding to the offline functional device from the configuration data length, the configuration feedback data length, the command data length and the command feedback data length of the original configuration packet, and then entering step b.

7. The method of claim 2, wherein the method further comprises: in all steps, if the control system regenerates the configuration package, the step a is returned.

8. A control system applying the data dynamic partition storage and retrieval method of claim 1, comprising a data packet determination module, an analysis cache module, an information collection feedback module and a partition driving module;

the partition driving module is respectively connected with the memory and each functional device;

the information collection feedback module is connected with the partition driving module to acquire the running condition of each functional device to generate a configuration packet or acquire a command packet for issuing and controlling the running of the functional device;

the data packet judging module is connected with the information collecting feedback module to execute the step a or the step c and judge whether the obtained data packet is a configuration packet or a command packet;

the analysis cache module is respectively connected with the data packet judgment module and the partition driving module so as to execute the analysis of the configuration packet in the step b or the analysis of the command packet in the step d;

and c, the partition driving module executes the memory partition according to the basic data configuration information of the configuration packet in the step b, or executes the memory partition mode before finishing in the step d under the condition of receiving the command packet, partitions the memory according to the control configuration information of the configuration packet, and can execute the data storage, retrieval and distribution with each functional device according to the memory partition condition obtained in the step b or the step d in the step g.

9. A control system according to claim 8, characterized in that: the analysis cache module also comprises a register, the basic data configuration information comprises receiving configuration information and sending configuration information, and the control configuration information comprises command configuration information and state configuration information; in step b, the register latches the reception configuration information, the transmission configuration information, the command configuration information, and the status configuration information in the configuration packet after the configuration packet is analyzed, and in step d, the command configuration information and the status configuration information can be extracted from the register.

10. A control system according to claim 9, characterized in that: the registers include four registers, and each register stores one of receiving configuration information, sending configuration information, command configuration information and status configuration information.

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