CN104698928A - Data acquisition unit - Google Patents

Abstract

The application discloses a data acquisition unit. The data acquisition unit comprises a main control module and at least one data acquisition module, wherein the output end of the main control module is connected with the communication preprocessor of an enterprise management system; the input end of the data acquisition module is connected with an enterprise instrument; the output end of the data acquisition module is connected with the input end of the main control module; the main control module communicates with at least one distributing installation data acquisition module through a Zig Bee network. Thus a distributed design is adopted in the data acquisition unit based on a Zig Bee wireless networking technology, the main control module communicates with at least one distributing installation data acquisition module through a Zig Bee network through the Zig Bee network, and the data acquisition unit can solve the problem that the resources of the data acquisition unit are wasted when multiple protocols, interfaces and positions are dispersedly installed.

Description

a data collector

technical field

The present application relates to the technical field of data collection, in particular to a data collector.

Background technique

In the process of industrial production, affected by various factors such as product quality and production cost, it is usually necessary to monitor some parameters of the industrial site. Data acquisition device is an effective means to solve this problem. In scientific research, the dynamic information of the measured object can be obtained by using the data acquisition device, which is a powerful tool for studying instantaneous physical processes and one of the important means to obtain scientific mysteries. Therefore, with the development of industrial technology, data acquisition devices have more and more extensive application fields.

At present, the amount of information required to be tested and processed in the enterprise is increasing, and the spatial location of the measured object is scattered, the test task is complicated, the test system is huge, the number of test units is large, and the data exchange volume between each test unit and the main control computer is increasing. bigger and bigger. At the same time, due to the harsh conditions of industrial sites, remote monitoring is becoming more and more important. Therefore, more and more attention is paid to the requirements of modularization, networking and remoteness of data acquisition devices.

At the same time, in order to strengthen the energy measurement management of enterprises, carry out energy conservation and consumption reduction actions in enterprises, and improve energy utilization rate is the most effective way to reduce resource consumption and protect the environment. In order to enable enterprises to better complete energy management, it is also necessary to establish an effective automatic energy data acquisition system so that enterprises can grasp the energy status in real time.

Existing data collection devices usually set one-to-one collection equipment for meters, install one collection device for each meter, and each collection device collects the data of one meter and directly uploads it to the data center.

However, due to the wide variety of instruments in the enterprise, there is no unified standard for communication interfaces and protocols, which makes data collection difficult, and the installation locations of the instruments are scattered. The use of conventional one-to-one mode collection equipment often results in waste of resources. .

Contents of the invention

In view of this, the present application provides a data collector to solve the resource waste problem of the data collection device when the instrument has multiple protocols, multiple interfaces and scattered installations.

In order to achieve the above objectives, the technical solutions provided in the embodiments of the present application are as follows:

A data collector, comprising:

Main control module and at least one data acquisition module, wherein,

The output terminal of the main control module is connected with the communication front-end processor of the enterprise management system;

The input end of described data acquisition module is connected with the instrument of enterprise;

The output end of the data acquisition module is connected to the input end of the main control module;

The main control module communicates with at least one of the distributedly installed data acquisition modules through a ZigBee network.

Preferably, the main control module includes:

The first ZigBee communication module, the GPRS communication module and the first core processing module, wherein,

The output end of the first ZigBee communication module is connected with the input end of the first core processing module;

The input end of the first ZigBee communication module is connected with the output end of the data acquisition module;

The output end of the first core processing module is connected with the input end of the GPRS communication module;

The output end of the GPRS communication module is connected with the communication front-end processor of the enterprise management system.

Preferably, the data collection module includes:

The second ZigBee communication module, acquisition module and the second core processing module, wherein,

The input end of the second ZigBee communication module is connected with the output end of the second core processing module;

The output end of the second ZigBee communication module is connected with the input end of the main control module;

The input end of the second core processing module is connected to the output end of the acquisition module;

The input end of the acquisition module is connected with the instrument of the enterprise.

Preferably, the collection module includes:

Universal asynchronous transceiver, RS485 channel, infrared communication channel and RS232 channel, wherein,

The input end of the universal asynchronous transceiver is connected with the RS485 channel, the infrared communication channel and the RS232 channel;

The output end of the universal asynchronous transceiver is connected to the input end of the second core processing module;

The RS485 channel, the infrared communication channel and the RS232 channel are respectively connected with the instruments of the enterprise to collect the data of the instruments.

Preferably, the main control module also includes:

Security chip, keys, LED display module and storage module, wherein,

The output end of the first core processing module is connected to the LED display module;

The output end of the first core processing module is connected to the storage module;

The output end of the security chip is connected to the input end of the first core processor;

The output end of the key is connected to the input end of the first core processor.

Preferably, it also includes:

A metering module, the metering module comprising:

The third ZigBee communication module, sampling module and the third core processing module, wherein,

The output end of the third ZigBee communication module is connected with the input end of the main control module;

The input end of the third ZigBee communication module is connected with the output end of the third core processing module;

The input end of the third core processing module is connected to the output end of the sampling module;

The input end of the sampling module is connected with the meter of the enterprise.

Preferably, the sampling module includes:

AD converter, voltage transformer and current transformer, wherein,

The input end of the AD converter is connected with the voltage transformer and the current transformer;

The output end of the AD converter is connected to the input end of the third core processing module;

The voltage transformers and current transformers are respectively connected with the meters of the enterprise to collect the data of the meters.

According to the technical solution provided by the above application, the data collector includes: a main control module and at least one data acquisition module, wherein the output end of the main control module is connected with the communication front-end processor of the enterprise management system; The input end of acquisition module is connected with the instrument of enterprise; The output end of described data acquisition module is connected with the input end of described main control module; Described main control module passes ZigBee network and at least one described data of distributed installation The acquisition module communicates. In this way, the data collector based on ZigBee wireless networking technology adopts a distributed design, and the main control module communicates with at least one data acquisition module installed in a distributed manner through the ZigBee network, which can solve the problem of multi-protocol, multi-interface and decentralized installation of data acquisition devices. waste of resources.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the 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 described in this application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of a kind of data collector provided by the present application;

Fig. 2 is the structural representation of another kind of data collector provided by the present application;

Fig. 3 is a schematic structural diagram of another data collector provided by the present application;

FIG. 4 is a schematic structural diagram of another data collector provided by the present application.

Detailed ways

Explanation of related terms:

ZigBee: A low-power LAN protocol based on the IEEE802.15.4 standard. According to international standards, ZigBee technology is a short-distance, low-power wireless communication technology. This name (also known as Zigbee Protocol) comes from the eight-character dance of bees, because bees (bee) use the "dance" of flying and "buzzing" (zig) to shake their wings to communicate with their companions the location information of pollen. That is to say, bees rely on this method to form a communication network in the group. It is characterized by close range, low complexity, self-organization, low power consumption, and low data rate. It is mainly suitable for the fields of automatic control and remote control, and can be embedded in various devices. In short, ZigBee is a cheap, low-power short-range wireless networking communication technology.

In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application. , but not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

FIG. 1 is a schematic structural diagram of a data collector provided by the present application.

Please refer to Figure 1, a data collector provided in the embodiment of the present application, including:

Main control module 1 and at least one data acquisition module 2, wherein,

The output terminal of the main control module 1 is connected with the communication front-end processor of the enterprise management system;

The input end of described data acquisition module 2 is connected with the instrument of enterprise;

The output end of the data acquisition module 2 is connected with the input end of the main control module 1;

The main control module 1 communicates with at least one of the data acquisition modules 2 installed in a distributed manner through a ZigBee network.

FIG. 2 is a schematic structural diagram of another data collector provided by the present application.

Referring to Fig. 2, the main control module includes:

The first ZigBee communication module 11, the GPRS communication module 12 and the first core processing module 13, wherein,

The output end of the first ZigBee communication module 11 is connected with the input end of the first core processing module 13;

The input end of described first ZigBee communication module 11 is connected with the output end of described data acquisition module 2;

The output end of the first core processing module 13 is connected with the input end of the GPRS communication module 12;

The output end of the GPRS communication module 12 is connected with the communication front-end processor of the enterprise management system.

Wherein, with reference to shown in Figure 2, the main control module also includes:

Security chip 14, button 15, LED display module 16 and storage module 17, wherein,

The output terminal of the first core processing module 13 is connected with the LED display module 16;

The output terminal of the first core processing module 13 is connected with the storage module 17;

The output terminal of the security chip 14 is connected with the input terminal of the first core processing module 13;

The output end of the button 15 is connected to the input end of the first core processing module 13 .

In the embodiment of the present application, the composition of the main control module of the distributed data collector includes a first core processing module 13, a first ZigBee communication module 11, a GPRS communication module 12, a security chip 14, buttons 15, LED display 16, and storage 17 . The output end of the first core processing module 13 is connected to the ZigBee communication module 12 , the GPRS communication module 11 , the LED display 16 and the storage 17 . The output end of the ZigBee communication module 12 is connected to the first core processing module 13 . The output end of the security chip 14 is connected to the first core processing module 13 . The output end of the button 5 is connected to the first core processing module 13 . The output end of the GPRS communication module 12 is connected to the communication front-end processor of the enterprise energy management system.

The main control module 1 carries out networking and communication with the data acquisition module 2 through the ZigBee communication module 11, and reads the data of the instrument or sets parameters. The read data is stored in memory 17 and can be displayed locally by LED display 16 . Button 15 switches the content displayed by LED display 16 . The first core processing module 13 performs data transmission with the communication front-end processor through the GPRS communication module 12, including reporting data and receiving instructions.

FIG. 3 is a schematic structural diagram of another data collector provided by the present application.

Shown in Fig. 3 with reference to, described data acquisition module 2 comprises:

The second ZigBee communication module 21, acquisition module 22 and the second core processing module 23, wherein,

The input end of the second ZigBee communication module 21 is connected with the output end of the second core processing module 23;

The output end of the second ZigBee communication module 21 is connected with the input end of the main control module 1;

The input end of the second core processing module 23 is connected with the output end of the acquisition module 22;

The input end of the collection module 22 is connected with the instrument of the enterprise.

Wherein, with reference to shown in Figure 3, the collection module 22 in the described data collection module 2, comprises:

Universal asynchronous transceiver 221, RS485 channel 222, infrared communication channel 223 and RS232 channel 224, wherein,

The input end of the UART 221 is connected with the RS485 channel 222, the infrared communication channel 223 and the RS232 channel 224;

The output end of the UART 221 is connected to the input end of the second core processing module 23;

The RS485 channel 222, the infrared communication channel 223 and the RS232 channel 224 are respectively connected with the instruments of the enterprise to collect the data of the instruments.

In the embodiment of the present application, the composition of the data acquisition module of the distributed data collector includes a second core processing module 23, a second ZigBee communication module 21, a universal asynchronous transceiver 221, an RS485 channel 222, an infrared communication channel 223 and an RS232 channel 224 . The output end of the second core processing module 23 is connected to the second ZigBee communication module 21 and the UART 221 . The output end of the second ZigBee communication module 21 is connected to the main control module 1 .

The on-site digital instrument transmits data to the UART 221 or receives an instruction for setting parameters through the RS485 channel 222, the infrared communication channel 223 or the RS232 channel 224, and the second core processing module 23 reads the instrument data through the UART 221 or Write instrument parameters, and then communicate with the main control module 1 through the second ZigBee communication module 21.

FIG. 4 is a schematic structural diagram of another data collector provided by the present application.

Referring to Figure 4, the data collector also includes:

Metering module 3, described metering module 3 comprises:

The 3rd ZigBee communication module 31, sampling module 32 and the 3rd core processing module 33, wherein,

The output end of the 3rd ZigBee communication module 31 is connected with the input end of the main control module 1;

The input end of described the 3rd ZigBee communication module 31 is connected with the output end of described the 3rd core processing module 33;

The input end of the third core processing module 33 is connected with the output end of the sampling module 32;

The input end of the sampling module 32 is connected with the meter of the enterprise.

Wherein, with reference to shown in Figure 4, the sampling module 32 in the metering module 3 includes:

AD converter 321, voltage transformer 322 and current transformer 323, wherein,

The input terminal of the AD converter 321 is connected with the voltage transformer 322 and the current transformer 323;

The output end of the AD converter 321 is connected to the input end of the third core processing module 33;

The voltage transformer 322 and the current transformer 323 are respectively connected to the meters of the enterprise to collect the data of the meters.

In the embodiment of the present application, the composition of the metering module of the distributed data collector includes a third core processing module 33 , a third ZigBee communication module 31 , an AD converter 321 , a voltage transformer 322 and a current transformer 323 . The output end of the third core processing module 33 is connected to the third ZigBee communication module 31 . The output end of the AD converter 321 is connected to the third core processing module 33 .

The voltage transformer 322 and the current transformer 323 are responsible for converting the current or voltage into a current or voltage signal within a measurable range, and then convert the analog signal into a digital signal through the AD converter 321, and the third core processing module 33 reads the AD The converter 321 converts the obtained digital value, and transmits the data to the main control module 1 through the third ZigBee communication module 31 .

The design and development of the distributed data collector based on ZigBee must carry out the design of the data collection part and the communication part. In the present invention, a modular structure of flexible deployment is adopted, so that the structure of the whole data collector can be flexibly combined according to actual needs. This requires comprehensive consideration in the overall structural design, communication protocol, and signal detection and processing. This is the core problem that competitors must solve if they want to imitate.

1) ZigBee-based low-power communication technology

2) Adopt modular structure to support distributed installation

3) Contains data acquisition module and metering module

4) Support GPRS communication

5) Support high-strength authentication and data encryption

6) Meet the requirements of enterprise energy management for data processing and analysis.

Compared with the prior art, the solution of the present application has the following advantages and beneficial effects: (1) Distributed installation is adopted, the main control module can be connected to one or more acquisition or measurement modules, and the number of modules can be flexibly configured according to the site conditions. (2) The data acquisition module can collect data from electric energy meters with a 485 interface, and supports data collection of up to 64 electric meters. (3) The metering module has the ability to measure, and can be connected to the line for measurement through current transformers and voltage transformers, which can replace the measurement function of the ammeter. (4) The main control module adopts ARM9 chip, which has fast calculation speed and powerful functions, and can process and analyze data according to the requirements of enterprise energy monitoring. (5) The ad hoc network solution based on ZigBee technology has the advantages of low power consumption, low complexity and low cost.

It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts in each embodiment, refer to each other, that is, Can. As for the device-type embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to part of the description of the method embodiments.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The scheme provided by the present invention has been described in detail above, and the principle and implementation mode of the present invention have been explained by using specific examples in this paper. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as limiting the present invention.

Claims (7)

1. A data collector, characterized in that, comprising: Main control module and at least one data acquisition module, wherein, The output terminal of the main control module is connected with the communication front-end processor of the enterprise management system; The input end of described data acquisition module is connected with the instrument of enterprise; The output end of the data acquisition module is connected to the input end of the main control module; The main control module communicates with at least one of the distributedly installed data acquisition modules through a ZigBee network. 2. The data collector according to claim 1, wherein the main control module comprises: The first ZigBee communication module, the GPRS communication module and the first core processing module, wherein, The output end of the first ZigBee communication module is connected with the input end of the first core processing module; The input end of the first ZigBee communication module is connected with the output end of the data acquisition module; The output end of the first core processing module is connected with the input end of the GPRS communication module; The output end of the GPRS communication module is connected with the communication front-end processor of the enterprise management system. 3. The data collector according to claim 1, wherein the data collection module includes: The second ZigBee communication module, acquisition module and the second core processing module, wherein, The input end of the second ZigBee communication module is connected with the output end of the second core processing module; The output end of the second ZigBee communication module is connected with the input end of the main control module; The input end of the second core processing module is connected to the output end of the acquisition module; The input end of the collection module is connected with the instrument of the enterprise. 4. The data collector according to claim 3, wherein the collection module includes: Universal asynchronous transceiver, RS485 channel, infrared communication channel and RS232 channel, wherein, The input end of the universal asynchronous transceiver is connected with the RS485 channel, the infrared communication channel and the RS232 channel; The output end of the universal asynchronous transceiver is connected to the input end of the second core processing module; The RS485 channel, the infrared communication channel and the RS232 channel are respectively connected with the instruments of the enterprise to collect the data of the instruments. 5. The data collector according to claim 2, wherein the main control module further comprises: Security chip, keys, LED display module and storage module, wherein, The output end of the first core processing module is connected to the LED display module; The output end of the first core processing module is connected to the storage module; The output end of the security chip is connected to the input end of the first core processor; The output end of the key is connected to the input end of the first core processor. 6. The data collector according to claim 1, further comprising: A metering module, the metering module comprising: The third ZigBee communication module, sampling module and the third core processing module, wherein, The output end of the third ZigBee communication module is connected with the input end of the main control module; The input end of the third ZigBee communication module is connected with the output end of the third core processing module; The input end of the third core processing module is connected to the output end of the sampling module; The input end of the sampling module is connected with the meter of the enterprise. 7. The data collector according to claim 6, wherein the sampling module comprises: AD converter, voltage transformer and current transformer, wherein, The input end of the AD converter is connected with the voltage transformer and the current transformer; The output end of the AD converter is connected to the input end of the third core processing module; The voltage transformers and current transformers are respectively connected with the meters of the enterprise to collect the data of the meters.