CN111427830A - Data processing method and processor - Google Patents

Abstract

The invention discloses a data processing method and a processor, comprising the following steps: receiving data commands respectively sent by multiple hosts; grouping and sorting the plurality of data commands; sending the data commands in the highest priority order to The slave machine latches the other data commands; when the slave machine returns response data or does not respond within a specified time, it returns the response data or non-response information to the master, and will be in the next level The data command is sent to the slave, and then this step is repeated until all the data commands are sent. The data processing method and processor provided by the embodiments of the present invention can solve the problem of abnormal communication caused by multiple hosts sending data commands to the same slave at the same time. It can realize real-time monitoring of the electric energy meter by multiple hosts, which is beneficial to the maintenance and reconstruction of the electric energy meter system in the later stage.

Description

A data processing method and processor

technical field

The invention belongs to the technical field of data processing, and in particular relates to a data processing method and a processor.

Background technique

The communication between the load management terminal and the electric energy meter, and the communication between the electric energy meter and the electricity sales controller are all through serial ports (such as RS232, RS485, and RS422 serial ports). Both the load management terminal and the electricity sales controller are used as the serial communication host to communicate with the electric energy meter as the slave (the host is the main communication initiator, the slave is the communication responder, and the slave does not actively send data). If the two masters send data to the slave at the same time, it will cause a data bus conflict, so that the two masters cannot obtain accurate data. In severe cases, the serial bus may be abnormal, enter a crash state, and have been unable to communicate. .

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a data processing method and processor to solve the above technical problems.

For this purpose, the present invention adopts the following technical solutions:

In a first aspect, the present invention provides a data processing method, comprising the following steps:

Receive data commands sent by multiple hosts respectively;

grouping and sorting a plurality of the data instructions;

Send the data command in the highest priority order to the slave, and latch the other data commands;

When the slave returns response data or fails to respond within a specified time, it returns the response data or non-response information to the master, and sends the data command at the next level to the slave, and then loops This step is until all the data commands are sent.

Optionally, the performing grouping and sorting on a plurality of the data instructions includes:

grouping and sorting a plurality of the data instructions according to a preset priority level;

Wherein, the priority level includes an instruction priority level and a host priority level.

In a second aspect, the present invention also provides a processor, comprising:

a data receiving unit for receiving data commands sent by multiple hosts respectively;

a grouping sorting unit, configured to perform grouping sorting on a plurality of the data instructions;

a data transfer unit, configured to transfer the data instruction to the slave in sequence, and return the response data or unresponsive information of the slave to the host;

The data latching unit is used for latching the data instruction that has not been transferred temporarily by the data transfer unit.

Optionally, the data receiving unit includes:

A data output interface circuit for connecting multiple hosts;

An information exchange communication circuit for connecting the data output interface circuit and the packet sorting unit.

Optionally, the processor further includes:

Power failure protection circuit and crash automatic reset circuit.

Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

The data commands sent by multiple masters are sequentially transferred to the slaves through packet sorting, and the data commands that have not been transferred temporarily are locked in the data latch unit. When the slaves return response data or fail to respond within a specified time, the response data or No response information is returned to the host. Therefore, the data processing method and processor provided by the embodiments of the present invention can solve the problem of abnormal communication caused by multiple hosts sending data commands to the same slave at the same time, without increasing the number of serial ports of the electric energy meter or the insufficient number of serial ports of the electric energy meter In this way, it is possible to realize real-time monitoring of the electric energy meter by multiple hosts, which is beneficial to the maintenance and reconstruction of the electric energy meter system in the later stage.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with the technology, and are not used to limit the conditions for the implementation of the present invention, so there is no technical The substantive meaning of the above, any modification of the structure, the change of the proportional relationship or the adjustment of the size, should still fall within the technical content disclosed in the present invention, without affecting the effect that the present invention can produce and the purpose that can be achieved. within the range that can be covered.

1 is a method flowchart of a data processing method provided by an embodiment of the present invention;

FIG. 2 is a structural block diagram of a processor according to an embodiment of the present invention.

Detailed ways

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the following description The embodiments described above are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

See Figure 1.

This embodiment provides a data processing method, including:

Step S1, receiving data commands sent by multiple hosts respectively;

Step S2, grouping and sorting a plurality of data instructions;

Step S3, sending the data command in the highest priority order to the slave, and latching other data commands;

Step S4, when the slave returns response data or fails to respond within a specified time, returns the response data or non-response information to the host, and sends a data command at the next level to the slave.

Finally, step S4 is executed cyclically until all data commands are sent.

In step S2, a plurality of data instructions are grouped and sorted, including:

Group and sort multiple data commands according to the preset priority level;

Among them, the priority level includes the command priority level and the host priority level.

For example, the priority level of the control command is usually higher than that of the query command, and the priority level of an important device as a host is higher than that of a common device as a host. According to this, the grouping ordering of data instructions can be realized.

In step S3, only one data command is sent at a time, so although it is grouped, there is only one data command in each group, corresponding to one host.

In step S4, the data processing method will receive the response data returned by the slave, and then return the response data to the corresponding host, or if the slave does not respond within a specified time, the data processing method will return unresponsive information to the corresponding host host.

The data processing method provided in this embodiment can solve the problem of abnormal communication caused by multiple masters sending data commands to the same slave at the same time. Especially in a power distribution network, as a slave power meter, the data processing method provided in this embodiment can be used when multiple hosts send data commands to the power meter at the same time without increasing the number of serial ports or the number of serial ports is insufficient. , to avoid abnormal communication problems.

In another embodiment of the present application, a processor is also provided for implementing the above data processing method. The processor includes:

The data receiving unit 15 is used to receive the data commands sent by the multiple hosts 16 respectively;

a grouping sorting unit 14, configured to perform grouping sorting on a plurality of data instructions;

The data transfer unit 12 is used to transfer the data instructions to the slave 11 in sequence, and return the response data or unresponsive information of the slave 11 to the host 15;

The data latching unit 13 is used for latching the data instruction that has not been transferred temporarily by the data transferring unit 12 .

Specifically, the data receiving unit 15 further includes:

A data output interface circuit for connecting a plurality of hosts 16 (not shown in the figure);

For connecting the data output interface circuit and the information exchange communication circuit of the packet sorting unit 14 (not shown in the figure). The information exchange communication circuit is used for information exchange between the data instructions sent by the plurality of hosts 16 received by the data output interface circuit, and forwarded to the packet sorting unit 14 .

Specifically, the processor further includes:

Power failure protection circuit (not shown in the figure) and automatic crash reset circuit (not shown in the figure), the function of the power failure protection circuit is to maintain the normal operation of the main chip when the power supply voltage of the processor is unstable. work, and the function of the automatic reset circuit is to restore the state before the crash.

Therefore, the processor provided in this embodiment is connected to the output sending interfaces of the multiple hosts 16 through the data receiving unit 15; the grouping sorting unit 14 groups the data commands sent by the hosts 16; the data transferring unit 12 transfers the data commands in sequence. To the slave 11, only one data command is transferred at a time, and the response data or unresponsive information of the slave 11 is returned to the corresponding host 16 through the packet sorting unit 14 and the data receiving unit 15; The data latching unit 13 latches; finally, multiple masters 16 can send data to the same slave 11 at the same time to ensure smooth communication.

Here, specialized vocabulary is used for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an (an)" and "the (the)" may be intended to include the plural forms as well, unless the context clearly dictates otherwise. The terms "comprises", "comprising", "including" and "having" are inclusive and thus specify the presence of the stated features, integers, steps, operations, elements and/or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or combinations thereof. Unless the order of performance is explicitly indicated, the method steps, processes, and operations described herein are not to be construed as necessarily requiring performance in the particular order discussed and illustrated. It should also be understood that additional or alternative steps may be employed.

When an element or layer is referred to as being "on," "engaged with," "connected to," or "coupled to" another element or layer, it can be directly on, or in conjunction with, the other element or layer. One element or layer is joined, connected or coupled to another element or layer, and intervening elements or layers may also be present. In contrast, when an element or layer is referred to as being "directly on," "directly engaged with," "directly connected to," or "directly coupled to" another element or layer, there may be no intervening elements or layers in between. Other words used to describe the relationship of elements should be interpreted in a similar fashion (eg, "between" and "directly between," "adjacent" and "directly adjacent," etc.). As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections are not limited by these terms limit. These terms may only be used to distinguish one element, component, region or section from another element, component, region or section. The use of terms such as the terms "first," "second," and other numerical terms herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

Spatially relative terms, such as "inside", "outside", "below", "below", "lower", "above", "upper", etc., may be used herein for ease of description , to describe the relationship between one element or feature and one or more other elements or features as shown in the figures. Spatially relative terms may be meant to encompass different orientations of the device than the orientation depicted in this figure. For example, if the device in this figure is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "under" can encompass both an orientation of upward and downward. The device may be otherwise oriented (rotated 90 degrees or otherwise) and interpreted in relative terms of space herein.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: The technical solutions described in the embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present invention.

Claims (5)

1. A data processing method, characterized by comprising the steps of:

receiving data instructions respectively sent by a plurality of hosts;

grouping and ordering a plurality of the data instructions;

sending the data instructions in the highest priority order to a slave, and latching other data instructions;

and when the slave machine returns response data or does not respond within a specified time, returning the response data or the non-response information to the master machine, sending the data instruction at the next level to the slave machine, and then circulating the step until all the data instructions are sent.

2. The data processing method of claim 1, wherein the packet ordering the plurality of data instructions comprises:

grouping and sequencing the data instructions according to a preset priority level;

wherein the priority levels include an instruction priority level and a host priority level.

3. A processor, comprising:

the data receiving unit is used for receiving data instructions sent by the plurality of hosts respectively;

the grouping sequencing unit is used for grouping and sequencing a plurality of data instructions;

the data transfer unit is used for transferring the data instruction to the slave machine according to the sequence and returning the response data or the non-response information of the slave machine to the host machine;

and the data latching unit is used for latching the data instruction which is not transferred temporarily by the data transferring unit.

4. The processor of claim 3, wherein the data receiving unit comprises:

the data output interface circuit is used for connecting a plurality of hosts;

and the information interaction communication circuit is used for connecting the data output interface circuit and the packet sequencing unit.

5. The processor of claim 3, further comprising:

a power supply power-down protection circuit and a crash automatic reset circuit.

Images