阅读说明：本技术 Hart手操器和对hart现场仪表设备的标定方法 (HART manual operator and calibration method for HART field instrument equipment ) 是由 彭超 于 2021-07-19 设计创作，主要内容包括：本发明提供一种HART手操器及对HART现场仪表设备的标定方法,HART手操器包括智能手持终端和HART无线通信接口,所述智能手持终端安装有智能操作系统和HART组态软件,所述智能手持终端与所述HART无线通信接口之间通过USB或蓝牙通信方式进行通信,所述HART无线通信接口与HART现场仪表设备之间采用标准的HART通信协议进行通信；HART手操器,用于实现对HART现场仪表设备的标定。通过本发明提供的HART手操器,使用者随身携带智能手持终端和HART通讯器即可实现对HART现场仪表设备的现场标定和调试维护,提高了灵活性和便捷性。(The invention provides a HART manual operator and a calibration method for HART field instrument equipment, wherein the HART manual operator comprises an intelligent hand-held terminal and a HART wireless communication interface, the intelligent hand-held terminal is provided with an intelligent operating system and HART configuration software, the intelligent hand-held terminal and the HART wireless communication interface are communicated in a USB or Bluetooth communication mode, and the HART wireless communication interface and the HART field instrument equipment are communicated by adopting a standard HART communication protocol; the HART manual operator is used for realizing calibration of HART field instrument equipment. By the HART manual operator provided by the invention, a user can carry the intelligent handheld terminal and the HART communicator to realize field calibration, debugging and maintenance of HART field instrument equipment, and the flexibility and convenience are improved.)

1. The HART manual operator based on the intelligent operating system is characterized by comprising an intelligent handheld terminal and a HART wireless communication interface, wherein the intelligent handheld terminal is provided with the intelligent operating system and HART configuration software, the intelligent handheld terminal is communicated with the HART wireless communication interface in a USB or Bluetooth communication mode, and the HART wireless communication interface is communicated with HART field instrument equipment in a standard HART communication protocol;

the HART manual operator is used for calibrating HART field instrument equipment.

2. The manual HART manipulator of claim 1, wherein the HART wireless communication interface is wireless and has a built-in standard HART master data link.

3. The HART hand-held device according to claim 1 or 2, wherein a memory card is embedded in the smart hand-held terminal, and the memory card stores therein the HART configuration software and the DDL file corresponding to each HART field instrument.

4. A calibration method for HART field instrument equipment based on a HART manual operator is characterized by comprising the following steps:

acquiring HART configuration software from a storage card and installing the HART configuration software on an intelligent handheld terminal;

based on HART field instrument equipment to be calibrated, acquiring a corresponding DDL file from a storage card, and installing the DDL file on an intelligent handheld terminal;

setting a parameter to be calibrated of HART field instrument equipment to be calibrated on an operation interface of HART configuration software, and receiving a parameter value to be calibrated returned by the HART field instrument equipment to be calibrated;

and calibrating the parameter to be calibrated based on the parameter value to be calibrated and the standard parameter value range.

5. The calibration method according to claim 4, wherein the setting of the parameter to be calibrated of the HART field instrument to be calibrated on the operation interface of the HART configuration software and the receiving of the parameter value to be calibrated returned by the HART field instrument comprises:

the intelligent handheld terminal sends the set parameters to be calibrated to HART field instrument equipment to be calibrated through the HART wireless communication interface;

the HART field instrument equipment acquires a corresponding parameter value to be calibrated according to the parameter to be calibrated, and returns the parameter value to be calibrated to the intelligent handheld terminal through the HART wireless communication interface;

the intelligent handheld terminal judges whether the parameter value to be calibrated falls within the numerical range of the standard parameter, if so, the parameter value to be calibrated is normal, and if not, the parameter value to be calibrated is abnormal.

6. The calibration method according to claim 5, wherein returning the parameter value to be calibrated to the smart handheld terminal through the HART wireless communication interface comprises:

the HART field instrument equipment sends the acquired parameter value to be calibrated to the HART wireless communication interface in the form of a standard HART data frame;

and the HART wireless communication interface analyzes and processes the standard HART data frame and transmits the processed parameter value to be calibrated to the intelligent handheld terminal.

7. The calibration method according to claim 5, further comprising:

when the intelligent handheld terminal judges that the parameter value to be calibrated of the HART field instrument device to be calibrated is abnormal, the standard value of the parameter to be calibrated is written in the operation interface of the HART configuration software so as to debug the parameter to be calibrated.

8. A calibration method according to any of claims 4-7, wherein the HART field instrument to be calibrated comprises, but is not limited to, a HART enabled rotameter or a HART enabled radar level gauge.

Technical Field

The invention relates to the field of instrument calibration, in particular to a HART manual operator and a calibration method for HART field instrument.

Background

The HART protocol adopts FSK frequency shift keying signals based on Bell202 standard, and audio digital signals with the amplitude of 0.5mA are superposed on low-frequency 4-20mA analog signals to carry out bidirectional digital communication, and the data transmission rate is 1.2 kbps. The average value of the FSK signal is 0, so that the size of the analog signal transmitted to the control system is not influenced, and the compatibility with the existing analog system is ensured. The main variables and control information in the HART protocol communication are transmitted by 4-20mA, and additional measurements, process parameters, device configuration, calibration, diagnostic information are accessed via the HART protocol, if necessary.

The HART communication adopts a half-duplex communication mode, is characterized in that digital signal communication is realized on the existing analog signal transmission line, belongs to a transitional product in the process of converting an analog system into a digital system, and therefore has stronger market competitiveness in the current transitional period and is developed quickly. HART specifies a series of commands that operate in a command-wise manner. It has three types of commands, the first type is called universal command, which is a command that all devices understand and execute; the second category, known as general behavioral commands, provides functionality that can be implemented in many (although not all) field devices, and includes libraries of functionality of the field devices that are most commonly used; a third category is called special device commands to facilitate work in certain devices to perform special functions, which may be open for use in the foundation or unique to the company that developed the command. The simultaneous presence of these three types of commands can often be found in one field device.

HART uses the unified device description language DDL, which is used by field device developers to characterize devices, the HART foundation is responsible for registering and managing these device descriptions and compiling them into a device description dictionary, and the host device uses DDL techniques to understand the characterization parameters of these devices without developing a proprietary interface for these devices. However, due to the analog-digital mixed signal system, it is difficult to develop a communication interface chip that can meet the requirements of various companies. HART can utilize bus to supply power, can meet the requirement of intrinsic safety explosion-proof, and can form a double-master system with a handheld programmer and a management system host as master devices.

HART technology has matured significantly abroad and has become the industry standard for global smart meters. The HART protocol master equipment comprises two types, namely an industrial PC system which mainly realizes real-time monitoring on the parameters and the state of field HART slave equipment; the handheld operator is of a second type, primarily for parameter tuning and test maintenance of field HART slave devices, with access to the device only when tuning or maintenance is required, and because of being a portable device, free to move and access. At present, widely used HART hand-held operators are mainly products of overseas large companies, such as 375, 475 and AMS Trex of Rosemount company, are few in China, and with the stop of 375 and 475 and the stop of updating DDL files, the AMS Trex equipment communicator is expensive, which brings great inconvenience to users.

Disclosure of Invention

The invention provides a HART manual operator and a calibration method for HART field instrument equipment, aiming at the technical problems in the prior art.

According to a first aspect of the present invention, a HART hand-held device based on an intelligent operating system is provided, which comprises an intelligent hand-held terminal and a HART wireless communication interface, wherein the intelligent hand-held terminal is provided with an intelligent operating system and HART configuration software, the intelligent hand-held terminal and the HART wireless communication interface communicate with each other in a USB or bluetooth communication manner, and the HART wireless communication interface and HART field instrumentation communicate with each other by using a standard HART communication protocol; the HART manual operator is used for realizing calibration of HART field instrument equipment.

On the basis of the technical scheme, the invention can be improved as follows.

Optionally, the HART wireless communication interface has a wireless communication function and is built in a standard HART master station data link.

Optionally, a memory card is arranged in the intelligent handheld terminal, and HART configuration software and DDL files corresponding to the HART field instrument devices are stored in the memory card.

According to a second aspect of the present invention, there is provided a HART hand-held device based HART field instrument calibration method, including: acquiring HART configuration software from a storage card and installing the HART configuration software on an intelligent handheld terminal; based on HART field instrument equipment to be calibrated, acquiring a corresponding DDL file from a storage card, and installing the DDL file on an intelligent handheld terminal; setting a parameter to be calibrated of HART field instrument equipment to be calibrated on an operation interface of HART configuration software, and receiving a parameter value to be calibrated returned by the HART field instrument equipment to be calibrated; and calibrating the parameter to be calibrated based on the parameter value to be calibrated and the standard parameter value range.

Optionally, the setting, on the operation interface of the HART configuration software, a parameter to be calibrated of the HART field instrument device to be calibrated, and receiving a parameter value to be calibrated returned by the HART field instrument device, includes: the intelligent handheld terminal sends the set parameters to be calibrated to HART field instrument equipment to be calibrated through the HART wireless communication interface; the HART field instrument equipment acquires a corresponding parameter value to be calibrated according to the parameter to be calibrated, and returns the parameter value to be calibrated to the intelligent handheld terminal through the HART wireless communication interface; the intelligent handheld terminal judges whether the parameter value to be calibrated falls within the numerical range of the standard parameter, if so, the parameter value to be calibrated is normal, and if not, the parameter value to be calibrated is abnormal.

Optionally, returning the parameter value to be calibrated to the intelligent handheld terminal through the HART wireless communication interface, including: the HART field instrument equipment sends the acquired parameter value to be calibrated to the HART wireless communication interface in the form of a standard HART data frame; and the HART wireless communication interface analyzes and processes the standard HART data frame and transmits the processed parameter value to be calibrated to the intelligent handheld terminal.

Optionally, the method further includes: when the intelligent handheld terminal judges that the parameter value to be calibrated of the HART field instrument device to be calibrated is abnormal, the standard value of the parameter to be calibrated is written in the operation interface of the HART configuration software so as to debug the parameter to be calibrated.

Optionally, the HART field instrument device to be calibrated includes, but is not limited to, a HART-enabled rotameter or a HART-enabled radar level gauge.

Drawings

Fig. 1 is a schematic structural diagram of a HART hand-held device based on an intelligent operating system according to the present invention;

fig. 2 is a schematic flow chart of a HART field instrument calibration method based on a HART hand-held device according to the present invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Fig. 1 is a HART hand-held device based on an intelligent operating system according to the present invention, as shown in fig. 1, the HART hand-held device mainly includes an intelligent hand-held terminal and a HART wireless communication interface, the intelligent hand-held terminal is installed with an intelligent operating system and HART configuration software, the intelligent hand-held terminal and the HART wireless communication interface communicate with each other through USB or bluetooth communication, the HART wireless communication interface and HART field instrumentation communicate with each other by using a standard HART communication protocol; the HART manual operator is used for realizing calibration of HART field instrument equipment.

The invention provides a portable HART manual operator, which mainly comprises an intelligent handheld terminal provided with an intelligent operating system, a memory card provided with HART configuration software, a HART wireless communication interface or a USB interface with wireless communication functions (Bluetooth and WIFI) and a built-in standard HART master station data link, wherein the memory card is arranged in the intelligent handheld terminal, a USB or Bluetooth communication mode is adopted between the intelligent handheld terminal and the HART wireless communication interface, and a standard HART communication protocol (2-wire system) is adopted between the HART wireless communication interface and HART field equipment.

It should be noted that HART configuration software is stored in the memory card, and DDL files corresponding to each HART field instrument are also stored in the memory card, and before the HART manual operator is used for executing a task for the first time, the HART manual operator can normally work only by installing the HART configuration software and the DDL files corresponding to the HART field instrument, so as to realize the calibration and debugging of the HART field instrument. When the HART manual operator is used again, the HART configuration software and the corresponding DDL file do not need to be installed again, and the corresponding DDL file only needs to be updated after the DDL file and the internal version of the instrument are updated.

Wherein the HART configuration software is generic for different HART field instruments and the DDL file is different for different HART field instruments.

By the HART manual operator provided by the invention, a user can carry the intelligent handheld terminal and the HART communicator to realize field calibration, debugging and maintenance of HART field instrument equipment, and the flexibility and convenience are improved.

Referring to fig. 2, a HART field instrument device calibration method based on a HART manipulator provided by the present invention includes: acquiring HART configuration software from a storage card and installing the HART configuration software on an intelligent handheld terminal; based on HART field instrument equipment to be calibrated, acquiring a corresponding DDL file from a storage card, and installing the DDL file on an intelligent handheld terminal; setting a parameter to be calibrated of HART field instrument equipment to be calibrated on an operation interface of HART configuration software, and receiving a parameter value to be calibrated returned by the HART field instrument equipment to be calibrated; and calibrating the parameter to be calibrated based on the parameter value to be calibrated and the standard parameter value range.

It is understood that the HART manual operator requires the HART configuration software and DDL software to be installed before use. Specifically, the user carries out command operation on the operation interface of the intelligent handheld terminal, corresponding software is firstly installed on the intelligent handheld terminal from the storage card, the software can be software or APP, the APP function is relatively simple and can be rapidly and simply debugged, the software is relatively complex and can be used for debugging instrument equipment in a full function way,

after the software is successfully installed, the corresponding DDL file can be installed (the main function of the memory card is to store the DDL file, the DDL file can be conveniently, simply and quickly downloaded from an official website of the corresponding instrument device), the installation of the HART communicator USB drive is completed after the related installation of the software, and the installation is simple for the official.

After the software and the DDL file are installed, a user can operate the HART manual operator to calibrate HART field instrument equipment. Specifically, a parameter to be calibrated of the HART field instrument to be calibrated can be set on an operation interface of the HART configuration software, and a parameter value to be calibrated returned by the HART field instrument to be calibrated is received; and calibrating the parameter to be calibrated based on the parameter value to be calibrated and the standard parameter value range.

In one possible embodiment, setting a parameter to be calibrated of the HART field instrument to be calibrated in an operation interface of the HART configuration software, and receiving a parameter value to be calibrated returned by the HART field instrument, includes: the intelligent handheld terminal sends the set parameters to be calibrated to HART field instrument equipment to be calibrated through the HART wireless communication interface; the HART field instrument equipment acquires a corresponding parameter value to be calibrated according to the parameter to be calibrated, and returns the parameter value to be calibrated to the intelligent handheld terminal through the HART wireless communication interface; the intelligent handheld terminal judges whether the parameter value to be calibrated falls within the numerical range of the standard parameter, if so, the parameter value to be calibrated is normal, and if not, the parameter value to be calibrated is abnormal.

It can be understood that, when the HART manual operator is used, the HART configuration software interface sets the parameter to be calibrated of the HART field instrument to be calibrated, and sends the parameter to be calibrated to the HART field instrument. The HART field instrument equipment obtains a current parameter value to be calibrated according to the parameter to be calibrated and returns the current parameter value to the intelligent handheld terminal, the intelligent handheld terminal judges whether the parameter value to be calibrated falls in a standard parameter value range, if so, the parameter value to be calibrated is normal, and if not, the parameter value to be calibrated is abnormal.

In the process that the HART field instrument equipment returns the parameter value to be calibrated to the intelligent handheld terminal through the HART wireless communication interface, the HART field instrument equipment sends the acquired parameter value to be calibrated to the HART wireless communication interface in the form of a standard HART data frame; and the HART wireless communication interface analyzes and processes the standard HART data frame and transmits the processed parameter value to be calibrated to the intelligent handheld terminal.

When the intelligent handheld terminal judges that the parameter value to be calibrated of the HART field instrument device to be calibrated is abnormal, the standard value of the parameter to be calibrated is written in the operation interface of the HART configuration software so as to debug the parameter to be calibrated, and the calibration of the HART field instrument device to be calibrated is realized.

HART field instrumentation devices to be calibrated include, but are not limited to, HART-capable rotameters or HART-capable radar level gauges.

The invention provides an HART manual operator and a calibration method for HART field instrument equipment, the popularization rate of an intelligent handheld terminal is very high, a user can realize the function of communication with the HART field instrument by holding the intelligent handheld terminal at any time, and the intelligent handheld terminal has the advantages of flexibility, portability, practicability, high cost performance and the like; the operation interface is friendly, and the method is more suitable for domestic use; a complete HART master station data link layer is built in the wireless communication interface and can be compatible with all HART field devices; by replacing different DDL protocols, the universal manual operator can be conveniently and flexibly assembled into a universal manual operator which accords with various field bus standards. The functions are comprehensive and comprise special functions, such as: take the rotameter of HART function, take the demarcation of the radar level gauge of HART function.

It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.