CN115185953A - Automatic calibration system of DC stable power supply based on LabVIEW development platform - Google Patents
Automatic calibration system of DC stable power supply based on LabVIEW development platformDownload PDFInfo
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Abstract
Description
Translated fromChinese技术领域technical field
本发明涉及自动化校准技术领域，特别涉及一种基于LabVIEW开发平台的直流稳定电源自动化校准系统。The invention relates to the technical field of automatic calibration, in particular to an automatic calibration system of a DC stable power supply based on a LabVIEW development platform.
背景技术Background technique
经过市场调研，目前国内比较知名的计量服务提供机构，针对直流稳定电源自动化校准系统的开发和使用情况并不普遍，开发平台包括VC、.NET、VB、LabVIEW等软件编译环境；校准系统的使用环境相对较窄，仅限于某些特定型号的大功率电源；同时校准系统的自动化程度较低，不能一键生成校准证书和校准记录。After market research, it is found that the relatively well-known measurement service providers in China do not develop and use automatic calibration systems for DC stable power supply. The development platforms include software compilation environments such as VC, .NET, VB, and LabVIEW; the use of calibration systems The environment is relatively narrow, limited to some specific models of high-power power supplies; at the same time, the automation degree of the calibration system is low, and the calibration certificate and calibration record cannot be generated with one click.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于提供一种基于LabVIEW开发平台的直流稳定电源自动化校准系统，以解决背景技术中的问题。The purpose of the present invention is to provide an automatic calibration system for DC stable power supply based on the LabVIEW development platform to solve the problems in the background art.
为解决上述技术问题，本发明提供了一种基于LabVIEW开发平台的直流稳定电源自动化校准系统，包括硬件部分和软件部分；In order to solve the above technical problems, the present invention provides an automatic calibration system for DC stable power supply based on the LabVIEW development platform, including a hardware part and a software part;
所述硬件部分包括：The hardware part includes:
电压表，作为测量标准，校准被测直流电源的电压设置精度、电压回读精度、负载电压调整率、源电压调整率以及电压纹波；Voltmeter, as a measurement standard, calibrates the voltage setting accuracy, voltage readback accuracy, load voltage regulation ratio, source voltage regulation ratio and voltage ripple of the DC power supply under test;
I/V转换器，与所述电压表配合作为测量标准，校准被测直流电源的电流设置精度、电流回读精度、负载电流调整率以及源电流调整率；The I/V converter cooperates with the voltmeter as a measurement standard to calibrate the current setting accuracy, current readback accuracy, load current adjustment rate and source current adjustment rate of the DC power supply under test;
电子负载，作为被测直流电源的输出负载；Electronic load, as the output load of the DC power supply under test;
交流调压器，作为供电电压，为被测直流电源提供稳定的输入电压；The AC voltage regulator, as the power supply voltage, provides a stable input voltage for the DC power supply under test;
所述软件部分包括数据库、自动化校准系统以及证书记录模板文件。The software portion includes a database, an automated calibration system, and a certificate record template file.
在一种实施方式中，所述数据库包括12张数据关系表：《设备型号》数据表、《通道量程》数据表、《设备校准信息库》数据表、《电压设置精度》数据表、《电压回读精度》数据表、《电流设置精度》数据表、《电流回读精度》数据表、《恒压源效应》数据表、《恒流源效应》数据表、《恒压负载效应》数据表、《恒流负载效应》数据表和《纹波噪声》数据表；上述12张数据关系表的“通道量程”字段采用双字段编码方式，即“电源型号字段+通道量程字段”。In one embodiment, the database includes 12 data relation tables: "Equipment Model" data sheet, "Channel Range" data sheet, "Equipment Calibration Information Base" data sheet, "Voltage Setting Accuracy" data sheet, "Voltage Setting Accuracy" data sheet Readback Accuracy" data sheet, "Current setting accuracy" data sheet, "Current readback accuracy" data sheet, "Constant voltage source effect" data sheet, "Constant current source effect" data sheet, "Constant voltage load effect" data sheet , "Constant Current Load Effect" data sheet and "Ripple and Noise" data sheet; the "channel range" field of the above 12 data relation tables adopts a double-field coding method, that is, "power supply model field + channel range field".
在一种实施方式中，所述自动化校准系统基于LabVIEW平台开发，由VI程序构成，包括主模块、子模块以及支持模块；In one embodiment, the automatic calibration system is developed based on the LabVIEW platform and is composed of VI programs, including a main module, a sub-module and a support module;
所述主模块包括依次相连的系统登录模块、信息录入模块、校准信息选择模块、系统初始化模块、系统实施进度模块和系统单通道量程校准实施模块；The main module includes a system login module, an information entry module, a calibration information selection module, a system initialization module, a system implementation progress module and a system single-channel range calibration implementation module that are connected in sequence;
所述子模块包括电压设置值校准模块、电流设置值校准模块、电压测量值校准模块、电流测量值校准模块、恒压负载效应校准模块、恒流负载效应校准模块、恒压源效应校准模块、恒流负载效应校准模块和纹波噪声校准模块，均与所述系统单通道量程校准实施模块相连；The sub-modules include a voltage setting value calibration module, a current setting value calibration module, a voltage measurement value calibration module, a current measurement value calibration module, a constant voltage load effect calibration module, a constant current load effect calibration module, a constant voltage source effect calibration module, The constant current load effect calibration module and the ripple noise calibration module are both connected to the single-channel range calibration implementation module of the system;
所述支持模块包括：The support module includes:
校准记录查询、生成模块，与所述信息录入模块相连；A calibration record query and generation module is connected with the information input module;
校准信息显示、选择、剔除模块，与所述校准信息选择模块相连；A calibration information display, selection, and rejection module is connected to the calibration information selection module;
校准系统自检模块和校准系统寻址模块，均与所述系统初始化模块相连；The calibration system self-checking module and the calibration system addressing module are both connected to the system initialization module;
校准证书、记录初始化模块和校准证书、记录输出模块，均与所述系统实施进度模块相连；The calibration certificate, the recording initialization module and the calibration certificate, and the recording output module are all connected with the system implementation progress module;
不确定度计算模块、系统通信配置模块和数据修约模块，均与所述系统单通道量程校准实施模块相连。The uncertainty calculation module, the system communication configuration module and the data rounding module are all connected with the single-channel range calibration implementation module of the system.
在一种实施方式中，所述系统登录模块实现自动化校准系统的登录，其登录流程为：In one embodiment, the system login module realizes the login of the automatic calibration system, and the login process is:
设置登录账户和密码字符串；Set the login account and password string;
全局变量初始化；global variable initialization;
登录信息正确，进入信息录入界面；否则无法进入。If the login information is correct, enter the information entry interface; otherwise, it cannot be entered.
在一种实施方式中，所述信息录入模块与所述校准记录查询、生成模块配合，实现校准信息的录入、查询和显示；In one embodiment, the information input module cooperates with the calibration record query and generation module to realize the input, query and display of calibration information;
所述校准信息包括被校设备型号、被校设备名称、制造厂商、校准时间、被校设备序列号、设备资产号、委托方、委托方地址、证书记录编号、环境温度、相对湿度、备注共12项内容；其中被校设备名称、制造厂商、校准时间由程序自动填入，其他内容均需要手工录入。The calibration information includes the model of the device to be calibrated, the name of the device to be calibrated, the manufacturer, the calibration time, the serial number of the device to be calibrated, the asset number of the device, the entrusting party, the entrusting party's address, the certificate record number, the ambient temperature, the relative humidity, and the total number of remarks. 12 items; among them, the name of the equipment being tested, the manufacturer, and the calibration time are automatically filled in by the program, and other contents need to be entered manually.
在一种实施方式中，所述校准信息选择模块与所述校准信息显示、选择、剔除模块配合，针对从所述信息录入模块接收到的电源通道量程信息，选择和确定需要校准的电源量程通道。In one embodiment, the calibration information selection module cooperates with the calibration information display, selection, and rejection module to select and determine the power supply range channel to be calibrated according to the power supply channel range information received from the information entry module. .
在一种实施方式中，所述系统初始化模块与所述校准系统自检模块和所述校准系统寻址模块配合，针对通信设备进行寻址访问，启动设备自检，并根据设备自检状态来确定是否继续实施校准。In an implementation manner, the system initialization module cooperates with the calibration system self-checking module and the calibration system addressing module, performs addressing access to the communication device, starts the device self-checking, and executes the device self-checking status according to the Determines whether to proceed with the calibration.
在一种实施方式中，所述系统实施进度模块与所述校准证书、记录初始化模块和所述校准证书、记录输出模块配合，实现校准证书、记录初始化，通过进度条实时显示处理进度；In one embodiment, the system implementation progress module cooperates with the calibration certificate, the record initialization module, the calibration certificate, and the record output module to realize the calibration certificate and record initialization, and display the processing progress in real time through a progress bar;
采用excel制作校准证书和记录模版，按照被测直流电源的每个通道量程进行布局；在实际校准时，按照被测直流电源的每个通道量程依次分别实施校准；Use excel to make the calibration certificate and record template, and arrange the layout according to the range of each channel of the DC power supply under test; during the actual calibration, the calibration is performed in turn according to the range of each channel of the DC power supply under test;
通过如下方法制作校准证书：依据被测直流电源的通道量程信息编码技术，首先对数据库中调出被校设备的通道量程信息，再确定该设备需要校准的通道量程。The calibration certificate is made by the following method: According to the channel range information coding technology of the DC power supply under test, firstly, the channel range information of the device under calibration is called out from the database, and then the channel range that the device needs to be calibrated is determined.
在一种实施方式中，所述系统单通道量程校准实施模块针对单个通道量程，依据校准规程，分别启动9个子模块完成相应校准；将返回的数据进行数据修约，并写入已生成证书记录的相应数据区域。In one embodiment, the single-channel range calibration implementation module of the system starts 9 sub-modules to complete the corresponding calibration for a single channel range according to the calibration procedure; rounds the returned data and writes it into the generated certificate record the corresponding data area.
在一种实施方式中，所述9个子模块针对单个量程通道，依据校准规程，从数据库调测试参数，分别利用通信程控技术对被测设备进行共计9个项目校准，每个测量点完成数据采样6次，依据格拉布斯准则剔除异常测量数据，并将有效测量数据取均值和计算不确定度，并返回系统单通道量程校准实施模块；In an embodiment, the 9 sub-modules are for a single range channel, according to the calibration procedure, adjust the test parameters from the database, respectively use the communication program control technology to calibrate the device under test for a total of 9 items, and complete data sampling at each measurement point. 6 times, the abnormal measurement data is eliminated according to the Grubbs criterion, and the effective measurement data is averaged and the uncertainty is calculated, and returned to the system single-channel range calibration implementation module;
根据被测直流电源校准要求，针对所述9个项目划分为两个类型：电压类型和电流类型，并且规定每个类型校准的连线模式；其中，According to the calibration requirements of the measured DC power supply, the 9 items are divided into two types: voltage type and current type, and the connection mode of each type of calibration is specified; wherein,
电压类校准项目包括：电压设置精度、电压回读精度、源电压效应、负载电压效应、纹波噪声；Voltage calibration items include: voltage setting accuracy, voltage readback accuracy, source voltage effect, load voltage effect, ripple noise;
电流类校准项目包括：电流设置精度、电流回读精度、源电流效应、负载电流效应。Current calibration items include: current setting accuracy, current readback accuracy, source current effect, and load current effect.
在本发明提供的基于LabVIEW开发平台的直流稳定电源自动化校准系统，具有以下有益效果：The DC stabilized power supply automatic calibration system based on the LabVIEW development platform provided by the present invention has the following beneficial effects:
(1)自动化校准整体耗时平均低于人工校准整体耗时的50％，整体效率提升1倍；(1) The overall time-consuming of automatic calibration is on average less than 50% of the overall time-consuming of manual calibration, and the overall efficiency is doubled;
(2)依据自动化系统的自身特点，不论任何设备，其证书和记录模板都具备唯一性，维护和更改都很简单；(2) According to the characteristics of the automation system, regardless of any equipment, its certificate and record template are unique, and maintenance and changes are very simple;
(3)利用自动化校准设备，在能力范围内，理论上可以覆盖目前市面上大部分的各类直流稳定电源型号。(3) Using automatic calibration equipment, it can theoretically cover most of the various DC stabilized power supply models on the market within the scope of ability.
附图说明Description of drawings
图1是本发明提供的基于LabVIEW开发平台的直流稳定电源自动化校准系统原理示意图；Fig. 1 is the schematic diagram of the principle diagram of the automatic calibration system of DC stable power supply based on LabVIEW development platform provided by the present invention;
图2是数据库设计12张数据关系表的示意图；Fig. 2 is the schematic diagram of database design 12 data relation tables;
图3是自动化校准系统主体程序的原理示意图；Fig. 3 is the principle schematic diagram of the main program of the automatic calibration system;
图4是系统登录模块的总体流程示意图；Fig. 4 is the overall flow schematic diagram of the system login module;
图5是信息录入模块的总体流程示意图；Fig. 5 is the overall flow schematic diagram of the information input module;
图6是数据库读取的典型程序框图；Fig. 6 is a typical block diagram of database reading;
图7是状态机控制的典型程序示意图；Fig. 7 is the typical program schematic diagram of state machine control;
图8是校准信息选择模块的总体流程示意图；8 is a schematic diagram of the overall flow of the calibration information selection module;
图9是系统初始化模块的总体流程示意图；9 is a schematic diagram of the overall flow of the system initialization module;
图10是通信设备访问的典型程序框图；Figure 10 is a typical block diagram of communication equipment access;
图11是通信地址自动识别的典型程序框图；Fig. 11 is a typical block diagram of automatic identification of communication address;
图12是通信串口自动配置的典型程序框图；Figure 12 is a typical block diagram of the automatic configuration of the communication serial port;
图13是系统实施进度模块的总体流程示意图；Fig. 13 is the overall flow schematic diagram of the system implementation progress module;
图14是ActiveX调用过程的典型程序框图；Fig. 14 is a typical block diagram of ActiveX calling process;
图15是excel制作校准证书和记录模版布局示意图；Figure 15 is a schematic diagram of the layout of the calibration certificate and record template made by excel;
图16是子模块总体流程示意图；Figure 16 is a schematic diagram of the overall flow of the sub-module;
图17是电流类校准项目连线模式示意图；Figure 17 is a schematic diagram of the connection mode of the current calibration item;
图18是电压类校准项目连线模式示意图；Figure 18 is a schematic diagram of the connection mode of the voltage calibration items;
图19是自动化校准和人工校准整体耗时数据对比示意图。Figure 19 is a schematic diagram showing the comparison of the overall time-consuming data of automatic calibration and manual calibration.
具体实施方式Detailed ways
以下结合附图和具体实施例对本发明提出的一种基于LabVIEW开发平台的直流稳定电源自动化校准系统作进一步详细说明。根据下面说明，本发明的优点和特征将更清楚。需说明的是，附图均采用非常简化的形式且均使用非精准的比例，仅用以方便、明晰地辅助说明本发明实施例的目的。A LabVIEW development platform-based automatic calibration system for DC stable power supply proposed by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.
发明提出一种基于LabVIEW开发平台的直流稳定电源自动化校准系统，能够实现的校准项目包括电压设置精度、电压回读精度、电流设置精度、电流回读精度、负载调整率、源电压调整率、纹波；其校准方法依据JJF1597-2016《直流稳定电源校准规范》。所述自动化校准系统主要分为硬件和软件两个部分：The invention proposes an automatic calibration system for a DC stable power supply based on a LabVIEW development platform. The calibration items that can be realized include voltage setting accuracy, voltage readback accuracy, current setting accuracy, current readback accuracy, load regulation rate, source voltage regulation rate, and ripple. The calibration method is based on JJF1597-2016 "Calibration Specification for DC Stable Power Supply". The automatic calibration system is mainly divided into two parts: hardware and software:
如图1所示，硬件部分包括标准电压表、I/V转换器、标准电子负载及交流调压器；所述交流调压器作为供电电压，为被测直流电源提供稳定的输入电压；所述标准电子负载作为被测直流电源的输出负载；所述标准电压表作为测量标准，用于校准被测直流电源的电压设置精度、电压回读精度、负载电压调整率、源电压调整率以及电压纹波；所述I/V转换器与标准电压表配合作为测量标准，用于校准被测直流电源的电流设置精度、电流回读精度、负载电流调整率以及源电流调整率。As shown in Figure 1, the hardware part includes a standard voltmeter, an I/V converter, a standard electronic load and an AC voltage regulator; the AC voltage regulator is used as a power supply voltage to provide a stable input voltage for the DC power supply under test; The standard electronic load is used as the output load of the DC power supply under test; the standard voltmeter is used as the measurement standard to calibrate the voltage setting accuracy, voltage readback accuracy, load voltage regulation rate, source voltage regulation rate and voltage of the DC power supply under test. Ripple; the I/V converter cooperates with a standard voltmeter as a measurement standard to calibrate the current setting accuracy, current readback accuracy, load current regulation rate and source current regulation rate of the DC power supply under test.
软件部分包括数据库(Access)、自动化校准系统主体程序(LabVIEW)、以及证书记录模板文件(Excel)；其中所述数据库采用目前主流的关系型数据库Access，共设计了12张数据关系表，如图2所示，分别为：《设备型号》数据表、《通道量程》数据表、《设备校准信息库》数据表、《电压设置精度》数据表、《电压回读精度》数据表、《电流设置精度》数据表、《电流回读精度》数据表、《恒压源效应》数据表、《恒流源效应》数据表、《恒压负载效应》数据表、《恒流负载效应》数据表和《纹波噪声》数据表；上述12张数据关系表的“通道量程”字段采用双字段编码方式，即“电源型号字段+通道量程字段”。The software part includes the database (Access), the main program of the automatic calibration system (LabVIEW), and the certificate record template file (Excel); the database adopts the current mainstream relational database Access, and a total of 12 data relation tables are designed, as shown in the figure 2, they are: "Equipment Model" data sheet, "Channel Range" data sheet, "Equipment Calibration Information Base" data sheet, "Voltage Setting Accuracy" data sheet, "Voltage Readback Accuracy" data sheet, "Current Setting" Accuracy" data sheet, "Current readback accuracy" data sheet, "Constant voltage source effect" data sheet, "Constant current source effect" data sheet, "Constant voltage load effect" data sheet, "Constant current load effect" data sheet and "Ripple and Noise" data sheet; the "channel range" field of the above 12 data relationship tables adopts a two-field coding method, that is, "power supply model field + channel range field".
所述《设备型号》数据表主要包含“设备型号”、“设备名称”、“制造厂商”、“设备通信接口类型”、“串口通信标志数据位设置”、“设备自检反馈信息”等8个信息字段；所述《通道量程》数据表主要包含“设备型号”、“通道名称”、“量程范围”、“SCPI程控指令”等6个信息字段；所述《设备校准信息库》数据表主要包含“设备型号”、“设备厂商”、“设备序列号”、“校准证书记录名称”、“校准证书记录编号”等16个信息字段；所述《电压设置精度》数据表主要包含“通道名称”、“输出功率最大额定值”、“输出电压最大额定值”、“电压设置值”、“电压设置精度和偏置”等14个信息字段；所述《电压回读精度》数据表主要包含“通道名称”、“输出功率最大额定值”、“输出电压最大额定值”、“电压回读分辨力”、“电压回读精度和偏置”等16个信息字段；所述《电流设置精度》数据表主要包含“通道名称”、“输出功率最大额定值”、“输出电流最大额定值”、“电流设置值”、“电流设置精度和偏置”等14个信息字段；所述《电流回读精度》数据表主要包含“通道名称”、“输出功率最大额定值”、“电流回读分辨力”、“电流回读精度和偏置”等16个信息字段；所述《恒压源效应》数据表主要包含“通道名称”、“输出功率最大额定值”、“输出电压最大额定值”、“源电压调整率和偏置”等16个信息字段；所述《恒流源效应》数据表主要包含“通道名称”、“输出功率最大额定值”、“输出电流最大额定值”、“源电流调整率和偏置”等16个信息字段；所述《恒压负载效应》数据表主要包含“通道名称”、“输出功率最大额定值”、“输出电压最大额定值”、“负载电压调整率和偏置”等14个信息字段；所述《恒流负载效应》数据表主要包含“通道名称”、“输出功率最大额定值”、“输出电流最大额定值”、“负载电流调整率和偏置”等14个信息字段；所述《纹波噪声》数据表主要包含“通道名称”、“输出功率最大额定值”、“输出电压最大额定值”、“纹波噪声误差”等10个信息字段。The "Equipment Model" data sheet mainly includes "Equipment Model", "Equipment Name", "Manufacturer", "Equipment Communication Interface Type", "Serial Communication Flag Data Bit Setting", "Equipment Self-check Feedback Information", etc. 8 The "Channel Range" data sheet mainly includes 6 information fields such as "equipment model", "channel name", "range range", "SCPI program control command"; the "equipment calibration information base" data sheet It mainly includes 16 information fields such as "equipment model", "equipment manufacturer", "equipment serial number", "calibration certificate record name", and "calibration certificate record number"; the "Voltage Setting Accuracy" data sheet mainly includes "channel Name", "Maximum rated value of output power", "Maximum rated value of output voltage", "Voltage setting value", "Voltage setting accuracy and offset" and other 14 information fields; the "Voltage Readback Accuracy" data sheet mainly Contains 16 information fields such as "Channel Name", "Maximum Rating of Output Power", "Maximum Rating of Output Voltage", "Voltage Readback Resolution", "Voltage Readback Accuracy and Offset"; Accuracy" data table mainly includes 14 information fields such as "channel name", "maximum rated value of output power", "maximum rated value of output current", "current setting value", "current setting accuracy and offset"; The data sheet of Current Readback Accuracy mainly includes 16 information fields such as "Channel Name", "Maximum Rating of Output Power", "Current Readback Resolution", "Current Readback Accuracy and Bias"; the "Constant Voltage" Source Effect" data sheet mainly includes 16 information fields such as "Channel Name", "Maximum Rating of Output Power", "Maximum Rating of Output Voltage", "Source Voltage Regulation and Bias"; the "Constant Current Source Effect" 》The data table mainly includes 16 information fields such as “Channel Name”, “Maximum Rating of Output Power”, “Maximum Rating of Output Current”, “Source Current Regulation and Bias”; the data of “Constant Voltage Load Effect” The table mainly includes 14 information fields such as "Channel Name", "Maximum Rating of Output Power", "Maximum Rating of Output Voltage", "Load Voltage Regulation and Bias"; the "Constant Current Load Effect" data sheet mainly Contains 14 information fields such as "Channel Name", "Maximum Rating of Output Power", "Maximum Rating of Output Current", "Load Current Regulation and Bias"; the "Ripple and Noise" data sheet mainly includes "Channel Name", "Maximum rated value of output power", "Maximum rated value of output voltage", "Ripple noise error" and other 10 information fields.
本发明的自动化校准系统针对电源的通道量程信息采用双字段编码方式，即“电源型号字段+通道量程字段”，具体格式为：XXXX-n1-n2-n3-n4；其中，“XXXX”代表电源型号字段，由数字、英文字母或特殊字符组成，一般直接引用设备厂商编号规则。需要注意的是，如果厂商提供的型号名称包含“-”，我们需要将其替换成“#”。“-”代表字段连接符，“n1-n2-n3-n4”代表电源通道量程信息字段，由四位的数值为1至9的自然数组成；“n1”代表该电源型号的通道总数；“n2”代表该电源型号的通道序号；“n3”代表该电源型号某通道的量程总数；“n4”代表该电源型号某通道的量程序号。The automatic calibration system of the present invention adopts a two-field encoding method for the channel range information of the power supply, that is, "power supply model field + channel range field", and the specific format is: XXXX-n1-n2-n3-n4; wherein, "XXXX" represents the power supply The model field is composed of numbers, English letters or special characters, and generally directly refers to the equipment manufacturer's numbering rules. It should be noted that if the model name provided by the manufacturer contains "-", we need to replace it with "#". "-" represents the field connector, "n1-n2-n3-n4" represents the power channel range information field, which consists of four-digit natural numbers ranging from 1 to 9; "n1" represents the total number of channels of the power supply model; "n2 "represents the channel serial number of the power supply model; "n3" represents the total range of a channel of the power supply model; "n4" represents the quantity program number of a channel of the power supply model.
举例示意：E3633A-1-1-2-1，表示电源型号是E3633A，该电源共有1个通道，并且该通道有2个量程，目前所指的是该通道的第1个量程。For example: E3633A-1-1-2-1, indicating that the power supply model is E3633A, the power supply has a total of 1 channel, and this channel has 2 ranges, which currently refers to the first range of this channel.
IT6952A-1-1-1-1，表示电源型号是IT6952A，该电源共有1个通道，并且该通道仅有1个量程，目前所指的正是该通道量程。IT6952A-1-1-1-1, indicating that the power supply model is IT6952A, the power supply has a total of 1 channel, and this channel has only 1 range, which is the current range of this channel.
这种编码方式的优点是比较清晰直观；从编码名称就能够迅速了解产品的通道和量程数量；编码方式简单，防止遗漏，并且便于通过编程对每个通道量程准确识别和赋值。The advantage of this coding method is that it is relatively clear and intuitive; the number of channels and ranges of the product can be quickly understood from the coding name; the coding method is simple, preventing omission, and it is convenient to accurately identify and assign the range of each channel through programming.
所述自动化校准系统主体程序基于LabVIEW平台开发，由44个VI程序构成，包括6个主模块、9个子模块以及29个支持模块，流程主要框图3所示。所述主模块包括依次相连的系统登录模块、信息录入模块、校准信息选择模块、系统初始化模块、系统实施进度模块和系统单通道量程校准实施模块；所述子模块包括电压设置值校准模块、电流设置值校准模块、电压测量值校准模块、电流测量值校准模块、恒压负载效应校准模块、恒流负载效应校准模块、恒压源效应校准模块、恒流负载效应校准模块和纹波噪声校准模块，均与所述系统单通道量程校准实施模块相连；所述支持模块包括：校准记录查询、生成模块，校准信息显示、选择、剔除模块，校准系统自检模块，校准系统寻址模块，校准证书、记录初始化模块，校准证书、记录输出模块，不确定度计算模块，系统通信配置模块和数据修约模块。The main program of the automatic calibration system is developed based on the LabVIEW platform, and consists of 44 VI programs, including 6 main modules, 9 sub-modules and 29 support modules. The main process flow is shown in block diagram 3. The main module includes a system login module, an information entry module, a calibration information selection module, a system initialization module, a system implementation progress module and a system single-channel range calibration implementation module that are connected in sequence; the sub-modules include a voltage setting value calibration module, a current Set value calibration module, voltage measurement value calibration module, current measurement value calibration module, constant voltage load effect calibration module, constant current load effect calibration module, constant voltage source effect calibration module, constant current load effect calibration module and ripple noise calibration module , all connected with the single-channel range calibration implementation module of the system; the support module includes: calibration record query, generation module, calibration information display, selection, and rejection module, calibration system self-checking module, calibration system addressing module, calibration certificate , Record initialization module, calibration certificate, record output module, uncertainty calculation module, system communication configuration module and data rounding module.
所述系统登录模块主要是实现自动化校准系统的登录，针对LabVIEW字符串比较函数、全局变量、事件结构以及While循环语句的灵活运用，总体流程框图如图4所示。The system login module is mainly to realize the login of the automatic calibration system, aiming at the flexible use of the LabVIEW string comparison function, global variable, event structure and While loop statement, the overall flow diagram is shown in Figure 4.
所述信息录入模块与所述校准记录查询、生成模块配合，实现校准信息的录入和校准信息的查询和显示。其中校准信息包括被校设备型号、被校设备名称、制造厂商、校准时间、被校设备序列号、设备资产号、委托方、委托方地址、证书记录编号、环境温度、相对湿度、备注共12项内容，其中“被校设备名称”、“制造厂商”、“校准时间”由程序自动填入，其他内容均需要手工录入。能够查询的信息包括“被校设备型号”、“证书记录编号”、“被校设备序列号”，输入查询信息后，程序会自动在数据库中搜寻相关信息，并且在该界面提示栏实时反馈查询结果，其总体流程如图5所示。The information input module cooperates with the calibration record query and generation module to realize the input of calibration information and the query and display of calibration information. The calibration information includes the model of the device being calibrated, the name of the device being calibrated, the manufacturer, the calibration time, the serial number of the device being calibrated, the asset number of the device, the client, the client's address, the certificate record number, the ambient temperature, the relative humidity, and a total of 12 remarks. The contents of the item, among which "name of equipment to be calibrated", "manufacturer" and "calibration time" are automatically filled in by the program, and other contents need to be entered manually. The information that can be queried includes "model of the device under test", "certificate record number" and "serial number of the device under test". After entering the query information, the program will automatically search for relevant information in the database, and feedback the query in real time in the prompt bar on the interface As a result, its overall flow is shown in Figure 5.
所述信息录入模块通过数据库访问技术和状态机控制技术实现。所述数据库访问技术为：(1)利用部分VI函数的多态特性，把udl文件转换为字符串，从而实现labVIEW与数据库的互联；(2)基于ADO编程模型，采用SQL语句实现LabVIEW对数据库的增、删、改、查；机控制技术。数据库读取的典型程序框图如图6所示。The information input module is realized by database access technology and state machine control technology. The database access technology is: (1) using the polymorphic characteristics of some VI functions to convert the udl file into a string, thereby realizing the interconnection of labVIEW and the database; (2) based on the ADO programming model, using SQL statements to realize LabVIEW to the database Add, delete, modify, check; machine control technology. A typical block diagram of a database read is shown in Figure 6.
所述状态机控制技术为：LabVIEW状态机是由一个While循环、一个条件结构和一个移位寄存器组成。其中While循环用于保证程序可以连续的运行；条件结构的各种分支用于描述状态机的各种状态；移位寄存器用于在不同状态的切换。状态机控制的典型程序如图7所示。The state machine control technology is as follows: the LabVIEW state machine is composed of a While loop, a condition structure and a shift register. The While loop is used to ensure that the program can run continuously; the various branches of the conditional structure are used to describe various states of the state machine; the shift register is used to switch between different states. A typical program for state machine control is shown in Figure 7.
所述校准信息选择模块对从信息录入界面VI接收到的电源量程通道信息，选择和确定需要校准的电源量程通道，针对LabVIEW数组函数、事件结构以及While循环语句的灵活运用；其总体流程如图8所示。The calibration information selection module selects and determines the power supply range channel that needs to be calibrated for the power supply range channel information received from the information input interface VI, and is aimed at the flexible use of LabVIEW array functions, event structures and While loop statements; the overall process is shown in the figure. 8 shown.
所述系统初始化模块主要针对自动化校准中的通信设备进行寻址访问，启动设备自检，并根据设备自检状态来确定是否继续实施校准，通过仪器设备程控技术实现，其总体流程如图9所示。所述仪器设备程控技术主要包含虚拟仪器软件结构(VISA)和可编程仪器标准命令(SCPI)。在本自动化校准系统中，利用NI公司提供的官方VISA工具包，实现对各类通信设备的访问控制，通信设备访问的典型程序框图如图10所示，通信地址自动识别的典型程序框图如图11所示，通信串口自动配置的典型程序框图如图12所示。The system initialization module mainly performs addressing access to the communication equipment in the automatic calibration, starts the equipment self-check, and determines whether to continue the calibration according to the equipment self-check status, which is realized by the instrument and equipment program control technology. Show. The instrument equipment program control technology mainly includes Virtual Instrument Software Architecture (VISA) and Standard Commands for Programmable Instruments (SCPI). In this automatic calibration system, the official VISA toolkit provided by NI is used to realize access control to various communication devices. The typical block diagram of communication equipment access is shown in Figure 10, and the typical block diagram of automatic identification of communication addresses is shown in Figure 10. As shown in Figure 11, the typical block diagram of the automatic configuration of the communication serial port is shown in Figure 12.
所述系统实施进度模块主要实现校准证书、记录初始化，通过进度条实时显示处理进度，其总体流程如图13所示；所述系统实施进度模块基于ActiveX技术，通过labVIEW启动Excel自动化服务器，依次创建Workbooks、Sheets属性，以及Add、Item等方法，并依据编程目标针对sheet对象和区域单元进行赋值，最后返回并关闭自动化引用。ActiveX调用过程的典型程序框图如图14所示。The system implementation progress module mainly realizes calibration certificate and record initialization, and displays the processing progress in real time through the progress bar, and its overall process is shown in Figure 13; the system implementation progress module is based on ActiveX technology, starts the Excel automation server through labVIEW, and creates in turn Workbooks, Sheets properties, and Add, Item and other methods, and assign values to sheet objects and area units according to the programming goals, and finally return and close the automatic reference. A typical block diagram of the ActiveX calling process is shown in Figure 14.
本发明的自动化校准系统采用excel制作校准证书和记录模版，其版式布局如图15，这种布局不同于以往按照校准项目的布局方式，而是按照被测直流电源的每个量程通道进行布局。在实际校准时，也是按照被测直流电源的每个量程通道依次分别实施校准。该模板布局不仅简单清晰，不易出现遗漏，而且适用性强，任何直流电源都可使用同一份证书模板，非常便于计算机编程。The automatic calibration system of the present invention uses excel to make calibration certificates and record templates, and its layout is shown in Figure 15. This layout is different from the previous layout according to calibration items, but according to each range channel of the DC power supply under test. During the actual calibration, the calibration is performed in turn according to each range channel of the DC power supply under test. The layout of the template is not only simple and clear, it is not easy to be missed, but also has strong applicability. Any DC power supply can use the same certificate template, which is very convenient for computer programming.
在本发明的自动化校准系统中，依据被测直流电源通道量程信息编码技术，首先对数据库中调出被校设备的通道量程信息，再确定该设备需要校准的通道量程。In the automatic calibration system of the present invention, according to the channel range information coding technology of the DC power supply under test, the channel range information of the device to be calibrated is firstly retrieved from the database, and then the channel range that the device needs to be calibrated is determined.
假设该设备需要校准的通道量程数量为N，基于ActiveX技术，通过labVIEW启动Excel自动化服务器，打开校准证书记录模板，针对指定sheet页面(证书模板是sheet 3页面、记录模板是sheet 2页面)复制N次；证书记录各页面的页码，利用程序循环结构，通过i次(i＝0～N-1)循环赋值确定，具体见下表：Assuming that the number of channel ranges that the device needs to calibrate is N, based on ActiveX technology, start the Excel automation server through labVIEW, open the calibration certificate record template, and copy N for the specified sheet page (the certificate template is sheet 3, and the record template is sheet 2). times; the certificate records the page number of each page, and uses the program loop structure to determine through i times (i=0～N-1) cyclic assignment, as shown in the following table:
表1校准证书页码赋值公式表Table 1. Calibration certificate page number assignment formula table
表2校准记录页码赋值公式Table 2 Calibration record page number assignment formula
所述系统单通道量程校准实施模块主要针对单个通道量程，依据校准规程，分别启动电压设置值校准模块、电流设置值校准模块、电压测量值校准模块、电流测量值校准模块、恒压负载效应校准模块、恒流负载效应校准模块、恒压源效应校准模块、恒流负载效应校准模块和纹波噪声校准模块共9个子模块完成相应校准；将返回的数据进行数据修约，并写入已生成证书记录的相应数据区域。The single-channel range calibration implementation module of the system is mainly aimed at the range of a single channel. According to the calibration procedures, the voltage setting value calibration module, the current setting value calibration module, the voltage measurement value calibration module, the current measurement value calibration module, and the constant voltage load effect calibration are respectively activated. Module, constant current load effect calibration module, constant voltage source effect calibration module, constant current load effect calibration module and ripple noise calibration module, a total of 9 sub-modules complete the corresponding calibration; the returned data is rounded off and written to the generated The corresponding data area of the certificate record.
所述子模块包括电压设置值校准模块、电流设置值校准模块、电压测量值校准模块、电流测量值校准模块、恒压负载效应校准模块、恒流负载效应校准模块、恒压源效应校准模块、恒流负载效应校准模块和纹波噪声校准模块，均与所述系统单通道量程校准实施模块相连。所述子模块为直流稳定电源校准子模块，主要针对单个量程通道，依据校准规程，从数据库调测试参数，分别利用通信程控技术对被测设备进行共计9个项目校准，每个测量点完成数据采样6次，依据格拉布斯准则剔除异常测量数据，并将有效测量数据取均值和计算不确定度，并返回上级VI，其总体流程如图16所示。The sub-modules include a voltage setting value calibration module, a current setting value calibration module, a voltage measurement value calibration module, a current measurement value calibration module, a constant voltage load effect calibration module, a constant current load effect calibration module, a constant voltage source effect calibration module, The constant current load effect calibration module and the ripple noise calibration module are both connected to the single-channel range calibration implementation module of the system. The sub-module is a DC-stabilized power supply calibration sub-module, which is mainly aimed at a single range channel. According to the calibration procedure, the test parameters are adjusted from the database, and the device under test is calibrated for a total of 9 items by using the communication program control technology. The data is completed at each measurement point.
在本发明的自动化校准系统中，根据稳定电源校准要求，针对常规的9个校准项目划分为两个类型：电流类型和电压类型，并且规定了每个类型校准的连线模式，这大大简化了校准工程师的实际接线步骤，显著降低了校准项目切换过程的出错概率。In the automatic calibration system of the present invention, according to the stable power supply calibration requirements, the conventional 9 calibration items are divided into two types: current type and voltage type, and the connection mode of each type of calibration is specified, which greatly simplifies The actual wiring steps of the calibration engineer significantly reduce the error probability of the calibration project switching process.
其中电流类校准项目连线模式如图17所示，校准项目包括电流设置精度、电流回读精度、源电流效应、负载电流效应；电压类校准项目连线模式如图18所示，校准项目包括电压设置精度、电压回读精度、源电压效应、负载电压效应、纹波噪声。The connection mode of current calibration items is shown in Figure 17, and the calibration items include current setting accuracy, current readback accuracy, source current effect, and load current effect; the connection mode of voltage calibration items is shown in Figure 18, and the calibration items include Voltage setting accuracy, voltage readback accuracy, source voltage effect, load voltage effect, ripple noise.
本系统采用LabVIEW作为应用软件开发工具，主要运用了四大关键技术：“数据库访问技术”、“状态机控制技术”、“设备通信测控技术”和“ActiveX报表生成技术”，实现与各种设备的通讯对接、数据处理、证书制作等被测稳定电源的自动化校准工作。This system uses LabVIEW as an application software development tool, and mainly uses four key technologies: "database access technology", "state machine control technology", "equipment communication measurement and control technology" and "ActiveX report generation technology", to realize and various equipment. Automatic calibration of the measured stable power supply, such as communication docking, data processing, certificate making, etc.
专门选了三台典型设备(即1台单通道单量程、1台单通道双量程，1台三通道单量程)，并分别采用人工和自动化校准系统进行校准并出具证书。试验情况如图19所示，可以看出，与人工校准相比，实施自动化校准整体耗时平均减少73％，单日整体工作效率平均提升2.3倍。Three typical equipments (namely 1 single-channel single-range, 1 single-channel dual-range, and 1 three-channel single-range) were specially selected, and the manual and automatic calibration systems were used to calibrate and issue certificates. The test situation is shown in Figure 19. It can be seen that compared with manual calibration, the overall time-consuming of automatic calibration is reduced by an average of 73%, and the overall work efficiency per day is increased by an average of 2.3 times.
本发明依据自动化系统的自身特点，不论任何设备，其证书和记录模板都具备唯一性，维护和更改都很简单。不像人工校准，必须针对每种类型的设备，都需要编制不同的模板，非常容易出错，并且不利于长期维护。According to the characteristics of the automation system, the present invention has unique certificates and record templates regardless of any equipment, and is easy to maintain and modify. Unlike manual calibration, which must be programmed with different templates for each type of equipment, it is very error-prone and not conducive to long-term maintenance.
本发明利用自动化校准设备，在能力范围内，理论上可以覆盖目前市面上大部分的各类直流电源型号。目前系统已经可以覆盖我所90％的电源型号，电源数量覆盖率达到96％。每年预计节约计量费用至少30万元。The present invention utilizes automatic calibration equipment, and within the capability range, can theoretically cover most of the various types of DC power supplies currently on the market. At present, the system can cover 90% of my power supply models, and the coverage rate of power supply quantity reaches 96%. It is expected to save at least 300,000 yuan in metering costs every year.
上述描述仅是对本发明较佳实施例的描述，并非对本发明范围的任何限定，本发明领域的普通技术人员根据上述揭示内容做的任何变更、修饰，均属于权利要求书的保护范围。The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes and modifications made by those of ordinary skill in the field of the present invention based on the above disclosure all belong to the protection scope of the claims.
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