Instrument remote verification method, device and system

Abstract

The invention discloses an instrument remote verification method, device and system, and the system comprises a voltage binding post which is used for being connected with a terminal binding post on an instrument; the grounding pole is used for grounding connection; the main control switch is used for controlling on and off of the instrument remote verification device; the communication unit is used for being in communication connection with far-end verification equipment; the voltage acquisition unit is used for acquiring voltage data of the instrument after the main control switch is turned on and the communication connection between the communication unit and the far-end verification equipment is normal; and the communication unit sends the voltage data to the remote verification equipment, so that the remote verification equipment performs remote verification on the instrument based on the voltage data, the instrument installation and verification processes in a narrow space can be optimized, the tedious disassembly steps are reduced, operation can be performed by directly connecting the verification joint, the working efficiency is remarkably improved, and the maintenance cost is reduced. And high-risk operations such as mechanism cover plate disassembly and instrument disassembly are not needed, so that the safety risk in the construction process is effectively reduced, and the safety of workers is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of instrument inspection, and in particular to a remote instrument inspection method, device and system. Background Art

[0002] In the current substation instrument calibration process, it usually includes two main steps: indication and contact calibration and signal verification. For equipment such as SF6 meters, this process is relatively simple if the installation space is spacious. However, for instruments installed in narrow spaces or with unreasonable designs, the calibration work becomes complicated and difficult. The traditional method requires multiple steps such as removing the mechanism cover, disassembling the instrument, removing the junction box, checking the body calibration signal, reinstalling the instrument and mechanism, and performing gas leak detection, resulting in low work efficiency. In addition, due to problems such as narrow space, metal aging, thread and pipe damage, and incomplete sealing, construction is inconvenient and there are safety risks such as gas leakage. Summary of the invention

[0003] The present application proposes a low-voltage grounding system that can be installed live and an intelligent authorization control method thereof, which can reduce the risk of instrument calibration and improve the efficiency of instrument calibration.

[0004] In a first aspect, a remote instrument calibration device is provided, comprising:

[0005] Voltage binding posts, used to connect to the terminal binding posts on the meter;

[0006] Grounding post, for ground connection;

[0007] A main control switch, used to control the opening and closing of the instrument remote calibration device;

[0008] A communication unit, used for communicating with a remote verification device;

[0009] A voltage collection unit, which collects voltage data of the meter after the main control switch is turned on and the communication unit and the remote verification device are in normal communication connection;

[0010] The communication unit sends the voltage data to the remote calibration device, so that the remote calibration device performs remote calibration on the meter based on the voltage data.

[0011] Optionally, the instrument remote calibration device further includes:

[0012] The local voltage display screen is used to display the voltage data locally and / or display a change trend graph of the voltage data.

[0013] Optionally, the instrument remote calibration device further includes:

[0014] Charging adapter interface and / or power supply battery.

[0015] Optionally, the communication unit includes: an Internet of Things card.

[0016] Optionally, the voltage acquisition unit is further used to detect whether the voltage data exceeds a preset safety range, and to issue an alarm when the voltage data exceeds the preset safety range.

[0017] In a second aspect, a remote instrument calibration method is provided, comprising:

[0018] Connecting the instrument remote calibration device to the instrument and grounding the instrument remote calibration device;

[0019] The instrument remote verification device is turned on, and after the communication connection between the instrument remote verification device and the remote verification equipment is normal, the voltage data of the instrument is collected through the instrument remote verification device, and the voltage data is sent to the remote verification equipment, so that the remote verification equipment remotely verifies the instrument based on the voltage data.

[0020] In a third aspect, a remote instrument calibration system is provided, comprising:

[0021] Remote calibration equipment; and

[0022] Instrument remote calibration device;

[0023] Among them, the instrument remote verification device is used to connect to the instrument, and after the communication connection with the remote verification equipment is normal, collect the voltage data of the instrument, and send the voltage data to the remote verification equipment, so that the remote verification equipment remotely verifies the instrument based on the voltage data.

[0024] Optionally, the remote verification device is used to determine whether the voltage data meets a preset alarm condition after receiving the voltage data, and when it is determined that the voltage data meets the preset alarm condition, issue a voltage abnormality alarm and display abnormal alarm information.

[0025] Optionally, the remote verification device issues a voltage abnormality alarm via voice.

[0026] Optionally, the remote verification device pops up and displays the abnormal alarm information on any interface.

[0027] The present application provides a remote calibration method, device and system for an instrument, including a voltage terminal for connecting to a terminal terminal on an instrument; a grounding terminal for grounding connection; a main control switch for controlling the opening and closing of the remote calibration device for the instrument; a communication unit for communicating with a remote calibration device; a voltage acquisition unit for acquiring voltage data of the instrument after the main control switch is turned on and the communication connection between the communication unit and the remote calibration device is normal; the communication unit sends the voltage data to the remote calibration device so that the remote calibration device performs remote calibration on the instrument based on the voltage data. In the remote calibration scheme for an instrument provided in the present application, when the instrument calibration is required, the voltage terminal is connected to the terminal terminal on the instrument through the voltage terminal, and after the main control switch is started and the communication connection between the communication unit and the remote calibration device is normal, the voltage data of the instrument is acquired and sent to the remote calibration device to perform remote calibration on the instrument. Based on this, the instrument installation and calibration process in narrow spaces is optimized, the tedious disassembly steps are reduced, and operations can be carried out by directly connecting the calibration connector, which significantly improves work efficiency. In addition, since there is no need to perform high-risk operations such as mechanism cover disassembly and instrument disassembly, the safety risks in the construction process are effectively reduced and the safety of the staff is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] in:

[0030] Figure 1 A schematic diagram of the structure of the instrument remote calibration device provided in the embodiment of the present application;

[0031] Figure 2 A schematic diagram of a process for collecting voltage data provided in an embodiment of the present application;

[0032] Figure 3 A flow chart of a remote instrument calibration method provided in an embodiment of the present application;

[0033] Figure 4 A flowchart of a remote instrument calibration method provided in another embodiment of the present application;

[0034] Figure 5 A schematic diagram of the structure of the instrument remote calibration system provided in the embodiment of the present application;

[0035] Figure 6A schematic diagram of the structural connection of the instrument remote calibration system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0037] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known structures, methods, devices, implementations, materials or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0038] In the present disclosure, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be an electrical connection, or it can communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0039] In addition, in the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist, such as A and / or B, which may indicate the existence of A alone, B alone, and the simultaneous existence of A and B. The symbol " / " generally indicates that the objects associated before and after are in an "or" relationship. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0040] Please refer to Figure 1The instrument remote verification device provided in the embodiment of the present application includes a voltage terminal 304, a voltage terminal 305, a grounding terminal 303, a main control switch 307, a communication unit 310 and a voltage acquisition unit (not shown).

[0041] Among them, the voltage terminal 304 and the voltage terminal 305 are used to connect with the terminal terminals on the instrument, the voltage terminal 304 is used to detect the terminal terminal of the positive pole of the voltage, and the voltage terminal 305 is used to detect the terminal terminal of the negative pole of the voltage; the grounding terminal 303 is used for grounding connection; the main control switch 307 is used to control the opening and closing of the remote calibration device of the instrument; the communication unit 310 is used to communicate with the remote calibration equipment; the voltage acquisition unit (not shown) is used to collect the voltage data of the instrument after the main control switch 307 is turned on and the communication unit 310 and the communication connection with the remote calibration equipment are normal; the voltage data is sent to the remote calibration equipment through the communication unit 310, so that the remote calibration equipment remotely calibrates the instrument based on the voltage data.

[0042] In one embodiment, the voltage terminal can be connected to the terminal terminal through a test line. When the meter needs to be calibrated, the voltage terminal is connected to the terminal terminal of the meter through the test line, and the meter remote calibration device is grounded through the grounding post, and the meter remote calibration device is turned on through the main control switch, and the remote calibration device is turned on at the same time, and after the communication unit communicates normally, the meter is remotely calibrated based on the voltage data through the remote calibration device.

[0043] In one embodiment, the meter may be a sulfur hexafluoride meter.

[0044] Optionally, the remote instrument calibration device further includes an operation panel 302 and a core control board 308, wherein the air switch 307 can be turned on / off on the operation panel 302, and the voltage terminals 304 and 305 are used to connect with the terminal terminals on the instrument. The core control board 308 can control the voltage data acquisition unit to acquire the voltage data of the instrument after the main control switch 307 is turned on and the communication connection between the communication unit 310 and the remote calibration device is normal; and send the voltage data to the remote calibration device through the communication unit 310, so that the remote calibration device performs remote calibration on the instrument based on the voltage data.

[0045] The verification process in the prior art requires the removal of multiple components and complex verification steps, so each verification takes a long time and is cumbersome to operate. There are a large number of instruments involved in the substation, and each verification requires the cooperation of multiple people, resulting in very low overall work efficiency. There is a risk of human error in the signal verification process, especially when the signal is verified through on-site and back-end telephone calls. A large number of personnel are required to complete the work, which increases labor costs and management difficulties. For instruments with narrow installation space or unreasonable structural design, the construction process is very laborious. Factors such as metal aging, thread and pipe damage, and incomplete sealing may lead to the risk of air leakage, increasing safety hazards. Due to complex operations and space limitations, daily maintenance and overhaul also become difficult. Therefore, the verification process in the prior art has problems such as cumbersome operation, low efficiency, human errors, high staffing requirements, inconvenient construction, air leakage risks and difficult maintenance. The present embodiment uses automation and digital technology to monitor the voltage value changes and feed back the voltage value changes to the remote verification device to determine whether the instrument node signal can be triggered at the normal threshold, reducing the need for manual operation, improving the speed of data processing and analysis, and thus speeding up the decision-making process; the automated verification process reduces the dependence on human resources and reduces long-term operating costs. At the same time, the optimized process and reduced error rate also help to reduce costs; digital technology (i.e., digital sampling) provides more accurate data collection, processing and analysis methods, reduces human errors, and improves data reliability. In addition, the present embodiment combines the principle of micro-rise and micro-fall (such as detection when the voltage or current reaches a certain threshold. When the signal exceeds or falls below this threshold, the corresponding action is triggered) to realize the remote digital verification function in the unmanned answering mode, improve the degree of automation of the verification process, reduce the reliance on human resources, reduce the cost of personnel configuration, reduce the interference of human factors, and improve the accuracy and reliability of the verification.

[0046] Optionally, see Figure 1 , the instrument remote calibration device also includes:

[0047] The local voltage display screen 301 is used to locally display the voltage data and / or display a change trend graph of the voltage data.

[0048] The local voltage display screen is loaded on the terminal posts of the instrument to display the voltage data and / or the voltage data change trend graph locally.

[0049] The local voltage display screen may include a voltage data acquisition unit, a digital-to-analog converter, and a display screen. The voltage data acquisition unit may be connected to the terminal binding post of the meter through a test line, collect the voltage data of the meter, and then send it to the digital-to-analog converter for digital-to-analog conversion, and then display it locally on the display screen after the digital-to-analog conversion. In one embodiment, the voltage value displayed on the display screen ranges from -120V to +300V.

[0050] Among them, the voltage data acquisition unit is used to obtain voltage data from the terminal connection column of the meter, such as voltage data, and the voltage signal can be an analog signal. In order for the display to display voltage data, a high-precision digital-to-analog converter can be used to convert the analog signal into a digital signal, and then the digital signal is sent to the digital-to-analog converter to be converted into an analog signal that can be intuitively displayed on the display screen. After the digital-to-analog conversion is completed, the analog signal after the digital-to-analog conversion is sent to the display screen, and it is displayed in the form of a graph (i.e., a voltage data change trend chart), such as a pie chart, a bar chart, etc., or in digital form through the display screen. Based on this, the operator can directly observe the current voltage status of the meter without any manual operation or interpretation of complex data. In addition, the historical trend of the voltage data can also be recorded to help users better understand the operating status of the power equipment by verifying the voltage data of the meter.

[0051] When the analog voltage signal V I After passing through the sampling circuit, holding circuit, and inputting into the digital-to-analog converter, the input signal is quantized and encoded and output as an n-bit digital signal D(D n-1 , D n-2 , ..., ...D1, D0), V REF The reference voltage required for the analog-to-digital conversion process. The relationship between these digital quantities is as follows:

[0052]

[0053] Wherein, K is the proportionality coefficient. It should be noted that the value of the proportionality coefficient is set according to the actual application scenario, and the proportionality coefficients of different analog-to-digital converters are different.

[0054] In one embodiment, please refer to Figure 2 , the sampling conversion process is as follows:

[0055] First, the voltage data acquisition unit samples the instrument signal to obtain a continuous analog signal V I, and convert the continuous analog signal into a discrete digital signal, maintain the sampling value, and form a collective signal; digitally quantize the collective signal to quantize the collective signal in a numerical way; encode the quantized value to convert the quantized value into a code sequence to obtain a digital signal; finally, convert the digital signal into an analog signal through a digital-to-analog converter to obtain an analog signal that can be displayed on the display.

[0056] In one embodiment, the instrument remote calibration device further includes:

[0057] A charging adapter interface 306 and / or a power supply battery 309 .

[0058] The charging adapter interface and the power supply battery are used to power the instrument remote device.

[0059] In one embodiment, the communication unit 310 includes: an Internet of Things card.

[0060] The communication unit is provided with an Internet of Things card, which can communicate with the remote verification device through the Internet of Things card, that is, the collected voltage signal is transmitted to the remote verification device (such as a computer terminal) for display and judgment. In this embodiment, by using the Internet of Things card for communication, a corresponding remote web program (i.e., an application that can be accessed through the Internet) can be developed to realize the functions of data display, verification, judgment, alarm, etc. of the remote verification device. The Internet of Things card (IoT SIMCard) is a SIM card specially designed for Internet of Things (IoT) devices. The Internet of Things card allows remote verification equipment and instrument remote verification devices to be connected to the mobile network, thereby realizing remote data transmission, verification and control. The communication method based on the Internet of Things technology has the advantages of strong real-time performance and high flexibility, and can meet the personalized needs of different users. At the same time, through the development and application of remote web programs, data visualization and intelligent analysis can also be realized, providing users with a more convenient and efficient service experience.

[0061] In one embodiment, the voltage acquisition unit is further used to detect whether the voltage data exceeds a preset safety range, and to issue an alarm when the voltage data exceeds the preset safety range.

[0062] The voltage acquisition unit can automatically detect whether the voltage exceeds the preset safety range and issue a voice alarm when the voltage data exceeds the preset safety range.

[0063] refer to Figure 3 , providing a remote instrument calibration method, comprising:

[0064] S101: Connect the instrument remote calibration device to the instrument, and ground the instrument remote calibration device.

[0065] The two ends of the test line can be connected to the voltage terminal of the instrument remote verification device and the terminal terminal on the instrument respectively to connect the instrument remote verification device to the instrument, and the grounding post of the instrument remote verification device is grounded to achieve grounding of the instrument remote verification device.

[0066] S102: Turn on the remote calibration device for the meter, and after the communication connection between the remote calibration device for the meter and the remote calibration equipment is normal, collect the voltage data of the meter through the remote calibration device for the meter, and send the voltage data to the remote calibration equipment, so that the remote calibration equipment performs remote calibration on the meter based on the voltage data.

[0067] The remote calibration device can be turned on by controlling the main control switch on the remote calibration device, and after detecting that the communication connection between the remote calibration device and the remote calibration equipment is normal, the voltage data collected by the remote calibration device is obtained, and the voltage data is sent to the remote calibration equipment, so that the operator can remotely calibrate the instrument through the remote calibration equipment at a distance.

[0068] Among them, the back-end interface of the remote verification device can display the system name, menu bar, device connection status, detected real-time voltage value and set warning value. The alarm threshold (i.e., preset safety range), alarm conditions, time and date, etc. can also be set through the back-end interface. For example, the back-end interface sets an alarm setting button. When the relevant personnel trigger the button, the alarm setting interface is displayed, and the alarm threshold (i.e., preset safety range), alarm conditions, time and date, etc. are set on the alarm setting interface. The verification record and alarm record can also be displayed through the back-end interface. For example, a query button is set on the back-end interface. When the relevant personnel trigger the query button, the verification record and alarm record can be displayed on the back-end interface. When the remote verification device receives the voltage data and detects that the voltage data exceeds the preset safety range, the remote verification device will issue a voice alarm and display the alarm information on the back-end interface.

[0069] For example, the alarm condition can be that when the detected voltage value exceeds the set warning value, the backend will issue a voice alarm and display the alarm information on the backend interface. The alarm information can pop up and be displayed on any interface. Specifically, assuming that the instrument is an SF6 instrument, the basic alarm condition settings can be as follows:

[0070] Calculated according to the rated voltage of ±110VDC: 1. Starting voltage 60.5V; 2. SF6 signal trigger state voltage 60.5V-300V; 3. SF6 signal non-trigger state voltage -120V-60.5V; 4. There is voltage but not working 0V-60.5V; 5. When the DC system balance bridge is qualified, the voltage is about -115 when the remote signal is not sent, and the voltage is about 115V when the remote signal is sent.

[0071] When monitoring the program, if the negative voltage changes to "positive voltage greater than 60.5", it can be judged that the signal circuit is turned on, and the voice alarm is "low air pressure alarm, low air pressure lock".

[0072] The lead wire of the grounding post of the instrument remote calibration device is grounded, and the voltage terminal is connected to the terminal terminal of the instrument (i.e., the signal loop terminal). There are 3 leads in total, numbered 0, 1, and 2, and sprayed with colors and icons. The black one is the grounding wire, such as Figure 1 or Figure 6 As shown, number 0 is the grounding post, and numbers 1 and 2 are the remaining two signal loop terminals. Based on this, the alarm information can be:

[0073] When the voltage measured at the No. 1 line terminal is greater than 60.5V, the remote voice alarm "low pressure alarm" is issued

[0074] When the voltage measured at the No. 2 line terminal is greater than 60.5V, the voice alarm "Low pressure lock" is sounded.

[0075] Reference Figure 4 It can be known that the voltage data can be collected from the electronic terminals of the instrument through the voltage data collection terminal, and the voltage can be displayed locally on the local voltage display screen. After that, the processed voltage data can be sent to the early warning terminal (i.e., the remote verification device) by wireless communication. The remote verification device can display the voltage value (i.e., voltage data). By setting the alarm condition (i.e., the early warning condition setting, such as 60.5V) on the back-end interface of the remote verification device, when the voltage value of the detected positive voltage is greater than 60.5V, it is judged that the signal circuit is turned on, and a voice alarm "low pressure alarm, low pressure lock" is issued, and an alarm record and a verification record are made. When the voltage value of the positive voltage is detected to meet the preset safety range, the verification process is terminated and a verification record is made.

[0076] In this application, the remote verification and early warning of the instrument status data (i.e., voltage data) are realized through the digital technology of remote verification of the instrument in the unattended mode. Specifically, through the local voltage display module and the remote early warning terminal (i.e., the remote verification device), the local voltage display module is connected to the terminal posts of the instrument to collect and display the voltage data, and can communicate with the remote terminal through the Internet of Things card; the remote early warning terminal is used to display the voltage value, set the early warning value and early warning information, and issue a voice alarm when the detected voltage value exceeds the set early warning value. It has the advantages of strong real-time performance and high flexibility, and can meet the personalized needs of different users. At the same time, through the development and application of remote web programs, it realizes the visualization and intelligent analysis of data, providing users with a more convenient and efficient service experience.

[0077] In one embodiment, if Figures 5 and 6 As shown, the instrument remote calibration system includes a remote calibration device 400; and an instrument remote calibration device 300;

[0078] Among them, the instrument remote verification device 300 is used to connect to the instrument 100, and after the communication connection with the remote verification device 400 is normal, collect the voltage data of the instrument 300, and send the voltage data to the remote verification device 400, so that the remote verification device 400 remotely verifies the instrument 300 based on the voltage data.

[0079] Specifically, a terminal post 200 is set in the meter 100, and the voltage post of the meter remote verification device 300 is connected to the signal loop end on the terminal post 200 through a test line, and the grounding post of the meter remote verification device 300 is connected to the ground. After the communication connection with the remote verification device 400 is normal, the voltage data of the meter 300 is collected and sent to the remote verification device 400, so that the remote verification device can remotely verify the meter 300 based on the voltage data.

[0080] In one embodiment, the remote verification device is used to determine whether the voltage data meets a preset alarm condition after receiving the voltage data, and to issue a voltage abnormality alarm and display abnormal alarm information when it is determined that the voltage data meets the preset alarm condition.

[0081] Among them, the back-end interface of the remote verification device can display the system name, menu bar, device connection status, detected real-time voltage value and set warning value. The alarm threshold (i.e., preset safety range), alarm conditions, time and date, etc. can also be set through the back-end interface. For example, the back-end interface sets an alarm setting button. When the relevant personnel trigger the button, the alarm setting interface is displayed, and the alarm threshold (i.e., preset safety range), alarm conditions, time and date, etc. are set on the alarm setting interface. The verification record and alarm record can also be displayed through the back-end interface. For example, a query button is set on the back-end interface. When the relevant personnel trigger the query button, the verification record and alarm record can be displayed on the back-end interface. When the remote verification device receives the voltage data and detects that the voltage data exceeds the preset safety range, the remote verification device will issue a voice alarm (i.e., voltage abnormality alarm) and display the alarm information (i.e., abnormal alarm information) on the back-end interface.

[0082] In one embodiment, the remote verification device issues an abnormal voltage alarm via voice.

[0083] For example, if the voltage measured at the terminal of line 1 is greater than 60.5V, the remote voice alarm "low pressure alarm" will be issued; if the voltage measured at the terminal of line 2 is greater than 60.5V, the voice alarm "low pressure lockout" will be issued.

[0084] In one embodiment, the remote verification device pops up and displays the abnormal alarm information on any interface.

[0085] When the remote verification device receives voltage data and detects that the voltage data exceeds a preset safety range, the remote verification device can display alarm information (i.e., abnormal alarm information) on any interface, such as the back-end interface, the alarm setting interface, the interface for displaying alarm records and verification records, etc.

[0086] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0087] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A remote instrument calibration device, characterized in that: The instrument remote calibration device comprises: Voltage binding posts, used to connect to the terminal binding posts on the meter; Grounding post, for ground connection; A main control switch, used to control the opening and closing of the instrument remote calibration device; A communication unit, used for communicating with a remote verification device; A voltage collection unit, which collects voltage data of the meter after the main control switch is turned on and the communication unit and the remote verification device are in normal communication connection; The communication unit sends the voltage data to the remote calibration device, so that the remote calibration device performs remote calibration on the meter based on the voltage data.

2. The instrument remote calibration device according to claim 1, characterized in that: The instrument remote calibration device also includes: The local voltage display screen is used to display the voltage data locally and / or display a change trend graph of the voltage data.

3. The instrument remote calibration device according to claim 1, characterized in that: The instrument remote calibration device also includes: Charging adapter interface and / or power supply battery.

4. The instrument remote calibration device according to claim 1, characterized in that: The communication unit includes: an Internet of Things card.

5. The instrument remote calibration device according to claim 1, characterized in that: The voltage acquisition unit is also used to detect whether the voltage data exceeds a preset safety range, and to issue an alarm when the voltage data exceeds the preset safety range.

6. A remote instrument calibration method, characterized in that: The instrument remote calibration method comprises: Connecting the instrument remote calibration device to the instrument and grounding the instrument remote calibration device; The instrument remote verification device is turned on, and after the communication connection between the instrument remote verification device and the remote verification equipment is normal, the voltage data of the instrument is collected through the instrument remote verification device, and the voltage data is sent to the remote verification equipment, so that the remote verification equipment remotely verifies the instrument based on the voltage data.

7. An instrument remote calibration system, characterized in that: The instrument remote calibration system comprises: Remote calibration equipment; and Instrument remote calibration device; Among them, the instrument remote verification device is used to connect to the instrument, and after the communication connection with the remote verification equipment is normal, collect the voltage data of the instrument, and send the voltage data to the remote verification equipment, so that the remote verification equipment remotely verifies the instrument based on the voltage data.

8. The instrument remote calibration system according to claim 7, characterized in that: The remote verification device is used to determine whether the voltage data meets the preset alarm condition after receiving the voltage data, and when it is determined that the voltage data meets the preset alarm condition, issue a voltage abnormality alarm and display abnormal alarm information.

9. The instrument remote calibration system according to claim 8, characterized in that: The remote verification device issues an abnormal voltage alarm by voice.

10. The instrument remote calibration system according to claim 8, characterized in that: The remote verification device pops up and displays the abnormal alarm information on any interface.

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