CN211741543U - Automatic generating device for analog signals of measuring channel of instrument control system - Google Patents
Automatic generating device for analog signals of measuring channel of instrument control system Download PDFInfo
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- CN211741543U CN211741543U CN201922318735.XU CN201922318735U CN211741543U CN 211741543 U CN211741543 U CN 211741543U CN 201922318735 U CN201922318735 U CN 201922318735U CN 211741543 U CN211741543 U CN 211741543U
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Abstract
The utility model belongs to the technical field of the instrument control, concretely relates to instrument control system measures automatic generating device of passageway analog signal. The utility model comprises a cable joint, a cable joint clamp, a connecting cable, a signal generator, a display screen, a parameter setting key and an information inquiry key, wherein the cable joint is connected with the signal generator through the connecting cable, the length of the connecting cable is adjusted, and the cable joint and a measuring 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 utility model discloses can be safe, quick, effective, the correct completion instrument passageway precision verification work.
Description
Technical Field
The utility model belongs to the technical field of the instrument control, concretely relates to instrument control system measures automatic generating device of passageway analog signal.
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 utility model provides a technical problem:
the utility model provides an automatic generating device of instrument control system measurement channel analog signal can be safe, quick, effective, the accurate completion instrument passageway precision verification work.
The utility model adopts the technical proposal that:
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.
The utility model has the advantages that:
(1) in the analog signal automatic generation device of the instrument control system measuring channel provided by the utility model, the cable joint and the side joint of the measuring channel can be quickly plugged, thereby saving the working time;
(2) in the automatic analog signal generating device for the measuring channel of the instrument control system, the generator stylus is prevented from being directly connected with the side joint of the measuring channel by using the cable joint, so that 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 long cable can be used for leading the signal generator to a place with a good environment, so that the operating environment risk is effectively reduced;
(4) in the automatic analog signal generating device for the instrument control system measuring channel provided by the utility model, the signal generator has the function of automatically sending analog signals according to set time, the automation intensity is high, and the human resources are saved;
(5) the utility model provides an among the instrument control system measurement channel analog signal automatic generating device, the signal generator can multirow real-time display the signal value that sends, and the intuition is strong.
Drawings
Fig. 1 is a schematic structural view 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 the automatic analog signal generator for measuring channel of instrument control system in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model provides an automatic generating device of instrument control system measurement channel analog signal, including cable joint 1, positive negative pole sign 2, cable joint clamp 3, connecting cable 4, signal generator 5, positive negative pole sign two 6, display screen 7, parameter setting key 8, information inquiry key 9, cable joint 1 is connected with signal generator 5 through connecting cable 4, cable joint clamp 3 fixes cable joint 1 and measurement channel side joint, cable joint 1 design has positive negative pole sign 2, signal generator 5 designs positive negative pole sign two 6, cable joint 1 and the positive negative pole one-to-one on signal generator 5; 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 without departing from the spirit of the present invention within the knowledge of those skilled in the art. The present invention can be applied to any other part not described in detail.
Claims (6)
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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922318735.XU CN211741543U (en) | 2019-12-20 | 2019-12-20 | Automatic generating device for analog signals of measuring channel of instrument control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922318735.XU CN211741543U (en) | 2019-12-20 | 2019-12-20 | Automatic generating device for analog signals of measuring channel of instrument control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211741543U true CN211741543U (en) | 2020-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922318735.XU Active CN211741543U (en) | 2019-12-20 | 2019-12-20 | Automatic generating device for analog signals of measuring channel of instrument control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211741543U (en) |
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2019
- 2019-12-20 CN CN201922318735.XU patent/CN211741543U/en active Active
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