CN111176254A - Multifunctional signal generating and detecting device - Google Patents
Multifunctional signal generating and detecting device Download PDFInfo
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- CN111176254A CN111176254A CN201911335338.1A CN201911335338A CN111176254A CN 111176254 A CN111176254 A CN 111176254A CN 201911335338 A CN201911335338 A CN 201911335338A CN 111176254 A CN111176254 A CN 111176254A
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- 238000012360 testing method Methods 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000012795 verification Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 3
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- 238000010248 power generation Methods 0.000 description 3
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
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Abstract
The invention relates to a multifunctional signal generating and detecting device, comprising: the Ethernet data interface module is used for being connected with a network switch of the DCS system so as to obtain database information in the DCS system; the signal detection module is used for connecting the signal detection meter pen socket with the measured clamping piece to acquire a detection signal; the signal type switching module is used for selecting different signal types to test; the operation module is used for selecting point locations to be measured from a database; the digital display module is used for displaying relevant information of the detection data; the screen shortcut operation module is used for performing shortcut operation on data, including switching of measuring range and signal percentage; the calculation module is used for acquiring a test signal value and automatically calculating an error value of a current signal to generate a test result; and the USB data interface module is used for connecting with a computer to derive a test result. The invention carries out channel check test on the DCS system, can reduce the time required by the test and achieves the aim of quick, accurate and convenient test.
Description
Technical Field
The invention belongs to the technical field of thermal power generation, and particularly relates to a multifunctional signal generating and detecting device.
Background
In recent years, novel energy technologies such as photovoltaic power generation and wind power generation are continuously and rapidly developed, and the traditional thermal power generating unit faces severe examination. It has become a major trend to develop flexibility modifications as early as possible in thermal power plants, and the stability and accuracy of DCS systems become particularly important.
The accuracy of DCS system signals directly influences the stability and safety of system control, and the control of a thermal power plant can be safe and effective only if the signal accuracy is guaranteed.
Therefore, an accuracy testing device of the DCS control system of the thermal power plant is needed, and particularly, when the unit is maintained, the signal accuracy of the DCS system needs to be tested.
Disclosure of Invention
The invention aims to provide a multifunctional signal generating and detecting device, which aims at a thermal power generating unit to carry out channel check test on a DCS, reduce the time required by the test and achieve the aim of quick, accurate and convenient test.
The invention provides an intelligent lighting control system of a power plant, which comprises:
the Ethernet data interface module is used for being connected with a network switch of the DCS system so as to obtain database information in the DCS system;
the signal detection module is used for connecting the signal detection meter pen socket with the measured clamping piece to acquire a detection signal;
the signal type switching module is used for selecting different signal types to test;
the operation module is used for selecting point locations to be measured from a database;
the digital display module is used for displaying relevant information of the detection data;
the screen shortcut operation module is used for performing shortcut operation on data, including switching of measuring range and signal percentage;
the calculation module is used for acquiring a test signal value, automatically calculating an error value of a current signal and generating a test result;
and the USB data interface module is used for connecting with a computer to derive a test result.
Further, the signal types selected by the signal type switching module comprise 4-20mA input, 4-20mA output, PT100 type thermal resistor and E, K type thermocouple.
Borrow by above-mentioned scheme, through multi-functional signal generation and detection device, have following technological effect:
1) the channel checking test of the DCS system can be completed by using one device, only the signal type needs to be switched, and other measuring equipment is not needed;
2) the system can be connected with a system database, the range of the required signal is directly changed, and the signal error is directly calculated according to the display value of the database without recording;
3) the test can be completed by one person, so that the labor cost is greatly saved, the experimental result is automatically recorded, and the condition that the manual recording is wrong is avoided.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a multifunctional signal generating and detecting device according to the present invention.
Reference numbers in the figures:
1-a digital display screen; 2-screen shortcut operation key; 3-function operating keys; 4-signal detection meter pen socket; 5-signal type switching knob; 6-Ethernet data interface; 7-USB data interface.
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.
The embodiment provides a multi-functional signal generation and detection device, includes:
the Ethernet data interface module is used for being connected with a network switch of the DCS system so as to obtain database information in the DCS system;
the signal detection module is used for connecting the signal detection meter pen socket with the measured clamping piece to acquire a detection signal;
the signal type switching module is used for selecting different signal types to test;
the operation module is used for selecting point locations to be measured from a database;
the digital display module is used for displaying relevant information of the detection data;
the screen shortcut operation module is used for performing shortcut operation on data, including switching of measuring range and signal percentage;
the calculation module is used for acquiring a test signal value, automatically calculating an error value of a current signal and generating a test result;
and the USB data interface module is used for connecting with a computer to derive a test result.
Through this multi-functional signal generation and detection device, carry out the channel check test to the DCS system, can reduce the required time of test, reach the purpose of quick accurate convenient test.
In the embodiment, the signal types selected by the signal type switching module comprise 4-20mA input, 4-20mA output, PT100 type thermal resistor and E, K type thermocouple.
The present invention is described in further detail below.
Referring to fig. 1, the device is mainly used for channel verification of a thermal power plant DCS system, and includes a digital display screen 1, a screen shortcut operation key 2, a function operation key 3, a signal detection stylus socket 4, a signal type switching knob 5, an ethernet data interface 6, and a USB data interface 7. When the channel of the detected system needs to be checked, the Ethernet data interface 6 is connected with a network switch of the DCS system to obtain database information in the DCS system, the signal type switching knob 5 is rotated to confirm the signal type, and the signal types of the device are classified into AI (4-20mA input), AO (4-20mA output), RTD (PT100 type thermal resistor) and TC (E, K type thermocouple). After the signal type is selected, the measuring stylus is connected into the signal detection stylus socket 4, and the other end of the measuring stylus socket is connected with the detected original. After the device is connected with a DCS detected original, the signal type is selected, the point position to be measured in a database can be selected through the function operation key 3, the related information of the detected data can be seen in the digital display screen 1, and the data can be quickly operated through the screen shortcut operation key 2, for example, the range and the signal percentage are switched. The general engineering requires that the card precision error of the DCS system is less than 1/1000, when a signal is accessed into a channel, the device can automatically calculate and record the error value of the current signal, and the recorded information comprises a signal value, an error value, a detection result and the like. The recording result can generate a data table file to be stored in the device. After the test is finished, the test result file can be exported to be stored and put on a record by connecting the computer with the USB data interface 7.
After the device and the method are adopted, the channel verification test of the DCS system can be completed by using one device, only the signal type needs to be switched, and other measuring equipment is not needed; the prior measuring device can not be connected with a DCS system to obtain database data, can be connected with a system database, directly changes the range of a required signal, directly calculates the signal error according to the display value of the database and does not record the signal error; in the past, when the DCS is subjected to channel verification, at least two persons are required to finish the channel verification, one person is responsible for adding signals, the other person needs to observe and record at a workstation, the device can finish the test by one person, the labor cost is greatly saved, the experimental result is automatically recorded, and the condition that errors occur in manual recording is avoided.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (2)
1. A multifunctional signal generating and detecting device is characterized by comprising:
the Ethernet data interface module is used for being connected with a network switch of the DCS system so as to obtain database information in the DCS system;
the signal detection module is used for connecting the signal detection meter pen socket with the measured clamping piece to acquire a detection signal;
the signal type switching module is used for selecting different signal types to test;
the operation module is used for selecting point locations to be measured from a database;
the digital display module is used for displaying relevant information of the detection data;
the screen shortcut operation module is used for performing shortcut operation on data, including switching of measuring range and signal percentage;
the calculation module is used for acquiring a test signal value, automatically calculating an error value of a current signal and generating a test result;
and the USB data interface module is used for connecting with a computer to derive a test result.
2. The multifunctional signal generating and detecting device according to claim 1, wherein the signal type selected by the signal type switching module comprises 4-20mA input, 4-20mA output, PT100 type thermal resistor, E, K type thermocouple.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911335338.1A CN111176254A (en) | 2019-12-23 | 2019-12-23 | Multifunctional signal generating and detecting device |
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| CN201911335338.1A CN111176254A (en) | 2019-12-23 | 2019-12-23 | Multifunctional signal generating and detecting device |
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| CN111176254A true CN111176254A (en) | 2020-05-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111930585A (en) * | 2020-09-30 | 2020-11-13 | 延锋伟世通电子科技（南京）有限公司 | Full liquid crystal instrument real vehicle online debugging method based on USB Ethernet |
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| JPH10325776A (en) * | 1997-05-26 | 1998-12-08 | Hitachi Ltd | Automatic pressure-adjusting device |
| CN102184749A (en) * | 2011-04-11 | 2011-09-14 | 北京广利核系统工程有限公司 | Method for automatically testing DCS (Digital Control System) control cabinet |
| CN102445677A (en) * | 2010-09-30 | 2012-05-09 | 青岛碱业股份有限公司 | DCS current input clamping piece calibration device for supplying 24V direct current |
| CN108181890A (en) * | 2017-12-12 | 2018-06-19 | 中核控制系统工程有限公司 | DCS automatic test devices based on virtual instrument |
-
2019
- 2019-12-23 CN CN201911335338.1A patent/CN111176254A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| JPH10325776A (en) * | 1997-05-26 | 1998-12-08 | Hitachi Ltd | Automatic pressure-adjusting device |
| CN102445677A (en) * | 2010-09-30 | 2012-05-09 | 青岛碱业股份有限公司 | DCS current input clamping piece calibration device for supplying 24V direct current |
| CN102184749A (en) * | 2011-04-11 | 2011-09-14 | 北京广利核系统工程有限公司 | Method for automatically testing DCS (Digital Control System) control cabinet |
| CN108181890A (en) * | 2017-12-12 | 2018-06-19 | 中核控制系统工程有限公司 | DCS automatic test devices based on virtual instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111930585A (en) * | 2020-09-30 | 2020-11-13 | 延锋伟世通电子科技（南京）有限公司 | Full liquid crystal instrument real vehicle online debugging method based on USB Ethernet |
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