CN213028082U

CN213028082U - Data acquisition instrument and data acquisition system

Info

Publication number: CN213028082U
Application number: CN202021706840.7U
Authority: CN
Inventors: 何波
Original assignee: Wuhan Urban Drainage Dev Co ltd
Current assignee: Wuhan Urban Drainage Dev Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-04-20
Anticipated expiration: 2030-08-14

Abstract

The embodiment of the utility model provides an above-mentioned data acquisition instrument and data acquisition system, wherein, above-mentioned data acquisition instrument includes first treater, Modbus data parser, first HART modem, first data interface and second data interface; the first processor is electrically connected to the Modbus data analyzer and the first HART modem respectively, the Modbus data analyzer is electrically connected to the first data interface, and the first HART modem is electrically connected to the second data interface; the Modbus data analyzer is used for analyzing the first data from the first data interface and sending the analyzed first data to the first processor; the first HART modem is configured to demodulate second data from the second data interface and send the demodulated second data to the first processor. The utility model discloses can effectively reduce the sensing data acquisition cost, improve the stability of sensing data acquisition process.

Description

Data acquisition instrument and data acquisition system

Technical Field

The utility model relates to a data acquisition technical field especially relates to a data acquisition instrument and data acquisition system.

Background

At present, in the occasions of domestic water supply, sewage treatment and the like, the remote acquisition of water flow data is often required; typically, the remote collection of water flow data can be divided into two phases: the method comprises a stage of collecting water flow raw data based on a flowmeter and a stage of collecting and transmitting the raw data collected by the flowmeter based on a data collector.

In the prior art, a data acquisition instrument often realizes acquisition of raw data based on a Modbus communication protocol, and in practical applications, some sensing devices may not support the Modbus communication protocol, for example, some existing flowmeters may only support an open communication protocol (HART) of an Addressable Remote sensor Highway, so that corresponding protocol conversion devices need to be added to realize Remote acquisition of water flow data, which results in higher cost and poorer stability of water flow data acquisition.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a data acquisition instrument and data acquisition system to solve prior art and need use protocol conversion equipment in water flow data remote acquisition, lead to gathering the cost higher, the relatively poor problem of stability.

In order to solve the technical problem, the utility model discloses a realize like this:

in a first aspect, an embodiment of the present invention provides a data acquisition instrument, including a first processor, a Modbus data parser, a first HART modem, a first data interface, and a second data interface;

the first processor is electrically connected to the Modbus data parser and the first HART modem respectively, the Modbus data parser is electrically connected to the first data interface, and the first HART modem is electrically connected to the second data interface;

the Modbus data analyzer is used for analyzing first data from the first data interface and sending the analyzed first data to the first processor; the first HART modem is configured to demodulate second data from the second data interface and send the demodulated second data to the first processor.

In a second aspect, the embodiment of the present invention further provides a data acquisition system, including a flow meter and the data acquisition instrument, the flow meter is electrically connected to the first data interface and/or the second data interface in the data acquisition instrument.

The embodiment of the utility model provides a data acquisition instrument, including first treater, Modbus data parser, first HART modem, first data interface and second data interface, wherein, Modbus data parser is connected to first treater and first data interface respectively to in order to parse the first data that comes from first data interface, and with after the analysis first data send to first treater; the first HART modem is respectively connected to the first processor and the second data interface so as to demodulate second data from the second data interface and send the demodulated second data to the first processor; the embodiment of the utility model provides a data acquisition instrument can adapt to the sensing equipment who supports Modbus communication protocol or HART communication protocol, in practical application, need not to additionally configure protocol conversion equipment to the sensing equipment who only supports HART communication protocol, and then effectively reduces the sensing data acquisition cost, improves the stability of sensing data acquisition process.

Drawings

Fig. 1 is a schematic structural diagram of a data acquisition instrument according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of a data acquisition instrument provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a data acquisition system according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a flow meter according to an embodiment of the present invention;

fig. 5 is another schematic structural diagram of a data acquisition system according to an embodiment of the present invention.

The figures show that:

the system comprises a data acquisition instrument 100, a first processor 102, a Modbus data parser 104, a first HART modem 106, a first data interface 108, a second data interface 110, a memory 112, a clock circuit 114, a communication circuit 116, a screen display device 118, a first HART communication module 120, a flow meter 200, a second processor 202, a second HART modem 204, a digital-to-analog converter 206, a second HART communication module 208, a server 300 and a terminal device 400.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details are provided, such as specific configurations and components, merely to facilitate a thorough understanding of embodiments of the invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.

As shown in fig. 1, the data collecting apparatus provided by the embodiment of the present invention includes a first processor 102, a Modbus data parser 104, a first HART modem 106, a first data interface 108 and a second data interface 110;

the first processor 102 is electrically connected to the Modbus data parser 104 and the first HART modem 106, respectively, the Modbus data parser 104 is electrically connected to the first data interface 108, and the first HART modem 106 is electrically connected to the second data interface 110;

the Modbus data analyzer 104 is configured to analyze the first data from the first data interface 108, and send the analyzed first data to the first processor 102; the first HART modem 106 is configured to demodulate the second data from the second data interface 110 and send the demodulated second data to the first processor 102.

The embodiment of the utility model provides an in, data acquisition instrument includes Modbus data parser 104, first HART modem 106, in other words, this data acquisition instrument can support these two kinds of communication protocols of Modbus communication protocol and HART communication protocol. The first data interface 108 may be, for example, an RS485 interface, an RS232 interface, an RJ45 interface, or the like; the second data interface 110 may be, for example, a USB interface, an RS232 interface, or the like; the specific types of the two data interfaces can be selected according to actual needs.

In practical applications, the data acquisition instrument may be used to connect to sensing devices such as a flow meter and a pressure gauge, and for convenience of description, the data acquisition instrument is mainly connected to the flow meter for example.

For a flow meter supporting the Modbus communication protocol, the flow meter may be directly connected to the first data interface 108, and the flow meter may directly transmit data such as instantaneous flow rate, accumulated flow rate, etc. to the Modbus data parser 104 through the first data interface 108 for parsing. For a flow meter supporting the HART communication protocol, the flow meter can be directly connected to the second data interface 110, and in combination with a practical application scenario, the flow meter can send a superposition signal to the data acquisition instrument; it is easily understood that, in a possible scheme for the HART communication protocol, a digital signal with an amplitude of 0.5mA may be superimposed on a low-frequency 4-20mA current analog signal to implement bidirectional digital communication, and the digital signal may correspond to data such as instantaneous flow, accumulated flow, etc.; further, the data acquisition instrument may demodulate the superimposed signal based on the first HART modem 106 to obtain data such as instantaneous flow, accumulated flow, etc. Of course, for a flow meter supporting both Modbus and HART communication protocols, the connection to the first data interface 108 or the second data interface 110 may be selected alternatively.

It should be emphasized that the data acquisition instrument in this embodiment includes the first data interface 108 and the second data interface 110, but in practical applications, the two types of data interfaces may be used alternatively or simultaneously according to the type or number of the flow meters.

The first processor 102 may be a Central Processing Unit (CPU), a Microprocessor (MCU), or a single chip microcomputer, and may be selected according to actual needs. In practical applications, the first processor 102 may be configured to receive the parsed first data and/or receive the demodulated second data, and the specific received data is determined according to the usage of the above two types of data interfaces. Of course, the first processor 102 may also implement power supply control, storage control, or data collection process control, which will be described in detail below.

The embodiment of the utility model provides a data acquisition instrument, including first processor 102, Modbus data parser 104, first HART modem 106, first data interface 108 and second data interface 110, wherein, Modbus data parser 104 is connected to first processor 102 and first data interface 108 respectively to the first data that comes from first data interface 108 is parsed, and with after the parsing first data send to first processor 102; the first HART modem 106 is connected to the first processor 102 and the second data interface 110, respectively, so as to demodulate the second data from the second data interface 110 and send the demodulated second data to the first processor 102; the embodiment of the utility model provides a data acquisition instrument can adapt to the sensing equipment who supports Modbus communication protocol or HART communication protocol, in practical application, need not to additionally configure protocol conversion equipment to the sensing equipment who only supports HART communication protocol, and then effectively reduces the sensing data acquisition cost, improves the stability of sensing data acquisition process.

It is easily understood that the embodiment of the present invention provides a data acquisition instrument which can be formed by connecting a plurality of hardware structures, and the specific processes of data transmission, processing, etc. can be realized by the conventional development or application of corresponding hardware structures, and the details are not repeated here.

Optionally, as shown in fig. 2, the data acquisition instrument further includes a memory 112 and a clock circuit 114, where both the memory 112 and the clock circuit 114 are electrically connected to the first processor 102;

the first processor 102 is configured to store target data in the memory 112 in association with clock data from the clock circuit 114, where the target data is at least one of the parsed first data and the demodulated second data.

In this embodiment, the clock circuit 114 may be configured based on a crystal oscillator circuit, and the first processor 102 may be configured to receive the target data and the clock data, and may associate the target data and the clock data to further store the target data and the clock data in the memory 112. Therefore, the method is combined with a practical application scene, and a user is helped to know the acquisition time of the sensing data such as instantaneous flow, accumulated flow and the like.

Of course, based on the above hardware structure, the data collector may also count the flow rate between each specific time point according to a periodicity, for example: the accumulated flow data collected at 0 point 0 min 0 sec on the first day can be stored as the initial value of daily water quantity statistics, and the water quantity value on the first day is calculated statistically after the accumulated flow data is collected at 0 point 0 min 0 sec on the second day; based on the statistical calculation method, the daily water amount data and the monthly water amount data can be calculated statistically.

Optionally, as shown in fig. 2, the data acquisition instrument further includes a communication circuit 116, and the communication circuit 116 is electrically connected to the first processor 102.

In some possible embodiments, the communication circuit 116 may be, for example, a 5G communication circuit, a 4G communication circuit, a WiFi communication module, etc., a bluetooth communication module, a ZigBee communication module, etc., or a narrowband Internet of Things (NB-IoT) based communication module, etc.

Through setting up communication circuit 116, can carry out communication connection with equipment such as data acquisition instrument and server, and then help the user to long-rangely obtain all kinds of sensing data.

Optionally, as shown in fig. 2, the communication circuit 116 is further electrically connected to the clock circuit 114;

the communication circuit 116 is configured to receive a timing signal sent by a server, and send the timing signal to the clock circuit 114.

In this embodiment, the server for sending the timing signal may be a network timing server, or a conventional cloud server; accordingly, the clock circuit 114 may be an electronic clock having a network timing function. The present embodiment facilitates accurate determination of the acquisition time of the sensing data by using the communication circuit 116 and the clock circuit 114.

Optionally, as shown in fig. 2, the first processor 102 is also electrically connected to a screen display device 118.

The screen display device 118 may be a touch screen or a non-touch screen, and in practical applications, by setting the screen display device 118, it is helpful for a user to read a working state of the data acquisition instrument and acquired sensing data on site, or it is helpful for the user to set a working mode or a working parameter of the data acquisition instrument.

Optionally, as shown in fig. 2, the data acquisition instrument further includes a first HART communication module 120;

the first HART communication module 120 is connected to the first HART modem 106 and the second data interface 110, respectively, and the first HART communication module 120 is configured to transmit the modulated control signal transmitted by the first HART modem 106 to the second data interface 110, wherein the control signal is transmitted to the first HART modem 106 by the first processor 102.

In combination with a practical application scenario, the data acquisition instrument may be connected to the sensing device through the second data interface 110, and in some cases, the data acquisition instrument may be required to acquire some unconventional data, such as working parameters of the flow meter, or acquire specific data at a non-preset time; a control signal requesting the collection of such irregular data may be sent by the first processor 102 and may be modulated by the modem 106 to form a 0.5mA digital signal that is superimposed on the current analog signal by the first HART communication module 120 and sent to the sensing device.

As shown in fig. 3, the embodiment of the present invention further provides a data acquisition system, which includes a flow meter 200 and the data acquisition instrument 100, wherein the flow meter 200 is electrically connected to the first data interface 108 and/or the second data interface 110 in the data acquisition instrument 100.

It is easily understood that the communication protocol supported by the flow meter 200 herein may be HART communication protocol or Modbus communication protocol, and the number of the flow meters 200 may be one or more; thus, in this embodiment, the first data interface 108 and/or the second data interface 110 in the data acquisition instrument 100 may be connected according to the communication protocol and the specific number supported by the flow meter 200.

The embodiment of the utility model provides a data acquisition system is the data acquisition system including above-mentioned data acquisition instrument 100, and the embodiment of above-mentioned data acquisition instrument 100 can be applicable to this data acquisition system equally to gain the same technological effect, no longer describe here.

Optionally, as shown in fig. 4, the flow meter 200 includes a second processor 202, a second HART modem 204, a digital-to-analog converter 206, and a second HART communication module 208;

the second processor 202 is electrically connected to the second HART modem 204 and the digital-to-analog converter 206, respectively, the second processor 202 is configured to send third data to the second HART modem 204 and send fourth data to the digital-to-analog converter 206, the second HART modem 204 is configured to process the third data to obtain a modulation signal, and the digital-to-analog converter 206 is configured to process the fourth data to obtain an analog current signal; the second HART communication module 208 is connected to the second HART modem 204 and the digital-to-analog converter 206, respectively, and the second HART communication module 208 is configured to superimpose the modulation signal and the analog current signal to obtain a superimposed signal, and send the superimposed signal to the second data interface 110.

In this embodiment, the flow meter 200 may support the HART communication protocol, and the flow meter 200 may superimpose the analog current signal and the modulation signal and then send the superimposed analog current signal and modulation signal to the data acquisition instrument 100, thereby implementing the bidirectional digital communication of the HART protocol, facilitating accurate acquisition of various sensing data such as instantaneous and cumulative flow of the flow meter, and improving the sensing data acquisition effect.

Optionally, as shown in fig. 5, the data acquisition system further includes a server 300, and the server 300 is communicatively connected to the communication circuit 116 included in the data acquisition instrument 100.

The server 300 may refer to an internet of things server and/or a conventional cloud server. The server 300 may be used to receive data sent by the data collection instrument 100, such as the instantaneous flow rate, daily water volume data, monthly water volume data, and the like mentioned in the above embodiments.

In an actual application scenario, the cloud server can correspond to a production report data platform, and the production report data platform is in communication connection with the data acquisition instrument 100, so that the received water volume data can be associated with the existing water volume report to form an accurate water volume statistical report, and production management and financial settlement are facilitated; in addition, the method is also helpful for improving the timeliness of water quantity data statistics.

Optionally, as shown in fig. 5, the data acquisition system further includes a terminal device 400, and the terminal device 400 is in communication connection with the server 300.

The terminal device 400 may be a mobile terminal or a personal computer, and is not limited herein, and the user can conveniently acquire data such as sensing data in real time by connecting the terminal device 400 and the server 300 in a communication manner. In a specific application scenario, the user can view data through a wechat applet developed in a matched manner on the mobile terminal.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A data acquisition instrument is characterized by comprising a first processor (102), a Modbus data parser (104), a first HART modem (106), a first data interface (108) and a second data interface (110);

the first processor (102) is electrically connected to the Modbus data parser (104) and the first HART modem (106), respectively, the Modbus data parser (104) is electrically connected to the first data interface (108), the first HART modem (106) is electrically connected to the second data interface (110);

the Modbus data analyzer (104) is used for analyzing first data from the first data interface (108) and sending the analyzed first data to the first processor (102); the first HART modem (106) is configured to demodulate second data from the second data interface (110) and send the demodulated second data to the first processor (102).

2. The data acquisition instrument of claim 1, further comprising a memory (112) and a clock circuit (114), both the memory (112) and the clock circuit (114) being electrically connected to the first processor (102);

the first processor (102) is configured to store target data in the memory (112) in association with clock data from the clock circuit (114), the target data being at least one of the parsed first data and the demodulated second data.

3. The data acquisition instrument of claim 2, further comprising a communication circuit (116), the communication circuit (116) being electrically connected to the first processor (102).

4. The data acquisition instrument of claim 3, wherein the communication circuit (116) is further electrically connected to the clock circuit (114);

the communication circuit (116) is used for receiving a timing signal sent by a server and sending the timing signal to the clock circuit (114).

5. The data acquisition instrument according to claim 1, wherein the first processor (102) is further electrically connected to a screen display device (118).

6. The data acquisition instrument of claim 1, further comprising a first HART communication module (120);

the first HART communication module (120) is connected to the first HART modem (106) and the second data interface (110), respectively, the first HART communication module (120) is configured to send a modulated control signal sent by the first HART modem (106) to the second data interface (110), and the control signal is sent by the first processor (102) to the first HART modem (106).

7. A data acquisition system, characterized by comprising a flow meter (200) and the data acquisition instrument (100) of any one of claims 1 to 6, the flow meter (200) being electrically connected to the first data interface (108) and/or the second data interface (110) in the data acquisition instrument (100).

8. The data acquisition system of claim 7, wherein the flow meter (200) comprises a second processor (202), a second HART modem (204), a digital-to-analog converter (206), and a second HART communication module (208);

the second processor (202) is electrically connected to the second HART modem (204) and the digital-to-analog converter (206), respectively, the second processor (202) is configured to send third data to the second HART modem (204) and send fourth data to the digital-to-analog converter (206), the second HART modem (204) is configured to process the third data to obtain a modulation signal, and the digital-to-analog converter (206) is configured to process the fourth data to obtain an analog current signal; the second HART communication module (208) is connected to the second HART modem (204) and the digital-to-analog converter (206), and the second HART communication module (208) is configured to superimpose the modulation signal and the analog current signal to obtain a superimposed signal, and send the superimposed signal to the second data interface (110).

9. The data acquisition system of claim 7, further comprising a server (300), the server (300) being communicatively connected to the communication circuit (116) included in the data acquisition instrument (100).

10. The data acquisition system according to claim 9, further comprising a terminal device (400), wherein the terminal device (400) is communicatively connected to the server (300).