CN110927652A - Automatic generation device and method for analog signal of measurement channel of instrument control system - Google Patents
Automatic generation device and method for analog signal of measurement channel of instrument control system Download PDFInfo
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- CN110927652A CN110927652A CN201911322054.9A CN201911322054A CN110927652A CN 110927652 A CN110927652 A CN 110927652A CN 201911322054 A CN201911322054 A CN 201911322054A CN 110927652 A CN110927652 A CN 110927652A
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- signal generator
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- 238000005259 measurement Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012795 verification Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
The invention belongs to the technical field of instrument control, and particularly relates to an automatic generation device and method for analog signals of a measurement channel of an instrument control system. The device comprises a cable joint, a cable joint hoop, a connecting cable, a signal generator, a display screen, a parameter setting key and an information query key, wherein the cable joint is connected with the signal generator through the connecting cable, the length of the connecting cable is connected, and the cable joint hoop is adjustable to fix the cable joint and a side joint of a measuring channel; the signal generator panel is provided with a parameter setting key, an information inquiry key and a display screen. The invention can complete the precision verification of the instrument channel safely, quickly, effectively and correctly.
Description
Technical Field
The invention belongs to the technical field of instrument control, and particularly relates to an automatic generation device and method for analog signals of a measurement channel of an instrument control system.
Background
In industrial application, some systems for protecting the safety of production processes not only require high precision of instruments of the protection systems, but also have certain requirements on the precision of the whole measurement loop channel from the instruments to an upper control system. Thermal parameters for protecting the system are often fixed at a certain point or a certain interval in the measuring range of the instrument, and instrument control personnel can periodically check the instrument to ensure that the precision of the instrument meets the requirement. But the accuracy of the instrument meets the requirement, and the accuracy of the whole measuring loop channel from the instrument to an upper control system cannot be ensured to meet the requirement. Therefore, a general instrument control person regularly simulates signal values of each interval from zero point to full point of the instrument by using a signal generator on the site side of the instrument, sends the simulated signals to an upper-layer control system, compares the simulated signals with output signals of the upper-layer control system, and compares whether the difference value of the two signals is within an error allowable range, so as to verify that the accuracy of the whole measuring loop channel of the instrument meets the requirement. In the actual working process, when the wiring of the instrument is removed and a meter pen of the signal generator is connected into a channel of the measurement loop of the instrument, the risk of grounding the cable of the measurement loop of the instrument or the risk of reverse connection with the anode and the cathode of the signal generator exists, so that the fuse or the module of an upper control system is burnt, each signal value can be only manually input, and the automation strength is low. In addition, if the instrument is installed in places with high temperature, high pressure, high radioactivity and the like, instrument control personnel cannot work in the places for a long time, which brings inconvenience to the work of the field instrument control personnel.
Taking a safety instrument control system of a certain nuclear power station as an example, the system is 1E grade and is used for realizing the overall safety function of the nuclear power station. The precision requirement of the nuclear power station on the safety related instruments is 0.25 grade, the precision requirement of the safety related instruments on the whole loop channel of the upper control system is 0.25 grade, and the indicating values of the safety related instruments are generally stable in a certain interval during the normal operation of the unit. Therefore, in order to ensure that the precision of the safety-related instrument and the measurement loop channel meets the requirement, the instrument control personnel verify the safety-related instrument during the overhaul of the unit, pull off the quick connector of the instrument, use the signal generator to verify the precision of the measurement loop channel of the safety instrument and ensure the stable operation of the safety instrument control system. But some safety-related instruments are installed around media with high radioactivity, and field instrumentation and control personnel cannot work in the site for a long time.
An automatic generating device for analog signals of a measurement channel of an instrument control system is urgently needed, and the accuracy verification work of the instrument channel can be completed safely, quickly, effectively and correctly.
Disclosure of Invention
The technical problems solved by the invention are as follows:
the invention provides an automatic generating device for analog signals of a measuring channel of an instrument control system, which can complete the precision verification work of the instrument channel safely, quickly, effectively and correctly.
The technical scheme adopted by the invention is as follows:
an instrument control system measurement channel analog signal automatic generation device comprises a cable joint, a cable joint clamp, a connecting cable, a signal generator, a display screen, a parameter setting key and an information query key, wherein the cable joint is connected with the signal generator through the connecting cable, the length of the connecting cable is connected, and the cable joint and a measurement channel side joint are fixed by the adjustable cable joint clamp; the signal generator panel is provided with a parameter setting key, an information inquiry key and a display screen.
The cable joint is designed with a positive pole mark I and a negative pole mark II, and the signal generator is designed with a positive pole mark II and a negative pole mark II.
The cable connectors correspond to the positive and negative electrodes on the signal generator one by one.
The signal generator provides both passive and active analog signals.
The time interval is set through a parameter setting key, and the value of the analog signal to be transmitted is set.
And calling out the analog signal value sent in each time period through the information inquiry key.
A method for measuring a channel analog signal automatic generation device by an instrument control system comprises the following steps:
firstly, connecting a cable joint with a signal generator through a connecting cable;
fixing the cable joint and the side joint of the measuring channel through a cable joint hoop;
setting time intervals by the signal generator through a parameter setting key, and setting analog signal values to be sent;
and step four, calling the analog signal value sent in each time period through the information inquiry key.
The invention has the beneficial effects that:
(1) in the automatic generating device for the analog signal of the measuring channel of the instrument control system, the cable joint and the side joint of the measuring channel can be quickly plugged, so that the working time is saved;
(2) in the automatic generating device for the analog signal of the measuring channel of the instrument control system, the cable joint is used, so that a generator stylus is prevented from being directly connected with a side joint of the measuring channel, and the risk of the operation process is reduced;
(3) in the automatic generating device for the analog signal of the measuring channel of the instrument control system, the length of the connecting cable can be set according to the actual needs of the field, and for a factory building with a severe operating environment, the signal generator can be led to a place with a good environment by using a long cable, so that the risk of the operating environment is effectively reduced;
(4) in the automatic generating device for the analog signal of the measuring channel of the instrument control system, the signal generator has the function of automatically sending the analog signal according to the set time, so that the automation intensity is high, and the human resources are saved;
(5) in the automatic generating device for the analog signal of the measuring channel of the instrument control system, the signal generator can display the transmitted signal value in multiple rows in real time, and the intuition is strong.
Drawings
FIG. 1 is a schematic structural diagram of an automatic analog signal generator for a measurement channel of an instrument control system according to the present invention;
in the figure: 1-a cable joint; 2, marking a positive pole and a negative pole; 3-cable joint clamp; 4-connecting a cable; 5-a signal generator; 6-marking a positive pole and a negative pole; 7-a display screen; 8-parameter setting key; 9-information query key.
Detailed Description
The following describes in detail an automatic generation device and method for analog signals of a measurement channel of an instrument control system according to the present invention with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the automatic analog signal generating device for the measurement channel of the instrument control system provided by the invention comprises a cable connector 1, a first positive and negative pole identifier 2, a cable connector hoop 3, a connecting cable 4, a signal generator 5, a second positive and negative pole identifier 6, a display screen 7, a parameter setting key 8 and an information query key 9, wherein the cable connector 1 is connected with the signal generator 5 through the connecting cable 4, the cable connector hoop 3 fixes the cable connector 1 and the side connector of the measurement channel, the cable connector 1 is provided with the first positive and negative pole identifier 2, the signal generator 5 is provided with the second positive and negative pole identifier 6, and the cable connector 1 corresponds to the positive and negative poles on the signal generator 5 one by one; the panel of the signal generator 5 is provided with a parameter setting key 8, an information inquiry key 9 and a display screen 7; the signal generator 5 sets a time interval through a parameter setting key 8 and sets an analog signal value to be sent, a display screen 7 in the signal generator 5 can display the sent analog signal value in multiple lines, and the analog signal value at each time slot can be called through an information inquiry key 9.
The connecting cable 4 is determined according to the actual requirement of the field. The parameter setting key 8 can automatically set and send analog signal values according to the measuring range of the instrument.
An automatic generation method of an analog signal of a measurement channel of an instrument control system comprises the following steps:
step one, connecting a cable joint 1 with a signal generator 5 through a connecting cable 4;
fixing a cable connector 1 and a side connector of a measuring channel through a cable connector hoop 3;
thirdly, the signal generator 5 sets a time interval through a parameter setting key 8 and sets an analog signal value to be sent;
and step four, the analog signal value sent in each time period can be called up through the information inquiry key 9.
The present invention has been described in detail with reference to the drawings and the actual operation, but the present invention is not limited to the above-described operation, and various changes, including changes in size, etc., can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. The prior art can be used for the content which is not described in detail in the present invention.
Claims (7)
1. The utility model provides an instrument control system measures automatic generating device of passageway analog signal which characterized in that: the device comprises a cable joint (1), a cable joint hoop (3), a connecting cable (4), a signal generator (5), a display screen (7), a parameter setting key (8) and an information query key (9), wherein the cable joint (1) is connected with the signal generator (5) through the connecting cable (4), the length of the connecting cable (4) is adjusted, and the cable joint (1) and a measuring channel side joint are fixed by the adjustable cable joint hoop (3); the panel of the signal generator (5) is provided with a parameter setting key (8), an information inquiry key (9) and a display screen (7).
2. The automatic generation device of the analog signal of the measurement channel of the instrument control system according to claim 1, characterized in that: the cable joint (1) is provided with a first positive and negative pole mark (2), and the signal generator (5) is provided with a second positive and negative pole mark (6).
3. The automatic generation device of the analog signal of the measurement channel of the instrument control system according to claim 2, characterized in that: the cable connectors (1) correspond to the positive and negative electrodes on the signal generator (5) one by one.
4. The automatic generation device of the analog signal of the measurement channel of the instrument control system according to claim 1, characterized in that: the signal generator (5) provides both passive and active analog signals.
5. The automatic generation device of the analog signal of the measurement channel of the instrument control system according to claim 1, characterized in that: the time interval is set by a parameter setting key (8), and the value of the analog signal to be transmitted is set.
6. The automatic generation device of the analog signal of the measurement channel of the instrument control system according to claim 1, characterized in that: the analog signal value sent in each time period is called out through an information inquiry key (9).
7. The method for measuring the channel analog signal automatic generation device of the instrument control system according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
step one, connecting a cable joint (1) with a signal generator (5) through a connecting cable (4);
fixing the cable joint (1) and the side joint of the measuring channel through a cable joint hoop (3);
thirdly, the signal generator (5) sets a time interval through a parameter setting key (8) and sets an analog signal value to be sent;
and step four, the analog signal value sent in each time period can be called up through the information inquiry key (9).
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| CN201911322054.9A CN110927652A (en) | 2019-12-20 | 2019-12-20 | Automatic generation device and method for analog signal of measurement channel of instrument control system |
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| CN109596861A (en) * | 2018-11-07 | 2019-04-09 | 河南朗博校准检测有限公司 | A kind of signal generator based on radio |
| CN211741543U (en) * | 2019-12-20 | 2020-10-23 | 江苏核电有限公司 | Automatic generating device for analog signals of measuring channel of instrument control system |
-
2019
- 2019-12-20 CN CN201911322054.9A patent/CN110927652A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413965A (en) * | 2007-10-17 | 2009-04-22 | 湖北盛佳电器设备有限公司 | Modular assembled electrical energy meter |
| CN202631722U (en) * | 2012-04-25 | 2012-12-26 | 福建阳谷智能技术有限公司 | Intelligent current transformer with automatic, on-line, high-precision monitoring |
| CN103744046A (en) * | 2013-12-09 | 2014-04-23 | 深圳供电局有限公司 | Intelligent electric energy meter running state monitoring system |
| CN203773346U (en) * | 2013-12-20 | 2014-08-13 | 河北汉光重工有限责任公司 | Analog rotary transformer generator |
| CN205992050U (en) * | 2016-06-30 | 2017-03-01 | 国网重庆市电力公司电力科学研究院 | A kind of insulation line monitoring device check system |
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