CN111175673A - DCS-SIS (distributed control system-SIS) based single signal channel checking system and method - Google Patents
DCS-SIS (distributed control system-SIS) based single signal channel checking system and method Download PDFInfo
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Abstract
A DCS-SIS-based signal channel single person checking system and a method thereof comprise: releasing the connection between the local end signal point and the DCS; establishing a wiring connection between an on-site calibration instrument and the DCS; the local calibrator sends a preset shaping calibration signal which is opened and closed in a delayed manner to the DCS and records the time for sending the calibration signal; inquiring an established trend inquiry group on a DCS engineer station, and confirming the correctness of each signal waveform, time and sequence in the trend group; inquiring an established temporary event inquiry group in an SIS (SIS) system connected with a DCS (distributed control System) engineer station, and confirming the correctness of triggering of a corresponding signal; and inquiring the signal display state of a local end signal point on an SIS system application interface in the mobile terminal to determine the correctness of the state. According to the invention, signal wiring at the DCS control cabinet end does not need to be removed, the signal channel can be verified by operating the local calibrator by a single person, the verification speed is high, and a large amount of labor cost can be saved.
Description
Technical Field
The invention relates to the field of construction tests of engineering construction, in particular to a DCS-SIS (distributed control system-SIS-based system and method for single-person verification of a signal channel.
Background
In the construction of projects such as construction, transformation, extension and the like of large-scale industrial enterprises with DCS systems and SIS systems, measurement control signals are more than thousands of points. When signal channel verification is carried out in the later stage of the overall construction of a project, the existing verification method generally comprises the following steps: the method comprises the steps that a checking person is configured on a local signal wiring end of a measuring signal, the checking person is configured on a signal wiring end of a DCS control cabinet, the local signal wiring of the measuring signal and the signal wiring of the DCS control cabinet end need to be detached during checking, the local end person alternately short-circuits and disconnects two local signal wires of the measuring signal, and the DCS control cabinet signal wiring end person uses a handheld multimeter or measures line lamps simultaneously. When the two parties carry out 'short circuit' on the personnel at the local end through the intercom real-time contact verification, the personnel at the DCS control cabinet end are ensured to measure the connection of the resistance between the two signal lines; when ground personnel are verified to perform disconnection, DCS control cabinet personnel can measure the open circuit of the resistance between the two signal lines, and the wiring is restored again after the verification of one signal is completed. The existing checking method needs to keep intercom communication in real time and complete checking, frequent disconnection and communication lead to low checking efficiency, and meanwhile, error checking can be caused under the conditions of communication signal shielding, poor language communication and the like. According to statistics, the number of check points of two skilled workers is about 50 points per day (8 hours) by adopting an original method, the time of several months is needed for completing the check of thousands of points, and a large amount of labor cost waste is caused.
Disclosure of Invention
The invention mainly aims to provide a DCS-SIS-based single signal channel checking system and method, signal wiring at a DCS control cabinet end does not need to be removed, a single-person operation local checking instrument can complete signal channel checking, checking speed is high, and a large amount of labor cost can be saved.
The invention adopts the following technical scheme:
on one hand, the invention discloses a signal channel single-person checking system based on DCS-SIS, which comprises an on-site checking instrument, a DCS system, an SIS system and a mobile terminal;
the local calibrator is connected with the wiring of the DCS and used for sending a preset shaping calibration signal for delayed switching to the DCS or adding a preset range signal to the DCS for calibration;
the DCS system comprises a DCS control cabinet and an engineer station which are connected; during verification, the signal wiring of the DCS control cabinet is disconnected with a local end signal point and is connected with the local calibrator; the engineer station establishes one or more trend query groups according to the position sequence of the local end signal points to be verified so as to record corresponding local end signal point verification results;
the SIS system is connected with the engineer station; compiling a signal trigger event condition of a local end signal point by using an event statistical function of an SIS system data query module and a delay switching condition of the local calibrator so as to record a corresponding local end signal point calibration result;
the mobile terminal is connected with the SIS system and comprises an application unit for displaying the signal display state of the local terminal signal point so as to display the corresponding local terminal signal point verification result in real time.
Preferably, when the local terminal signal point is a switching value signal point, the local calibration apparatus includes: the device comprises a battery source, a power switch, a point-operated test button, a first delay relay, a second self-holding relay and a third delay relay; one end of the battery source is connected with one end of the power switch; the other end of the power switch is connected with one end of the inching type test button; the other end of the point-operated test button is respectively connected with one end of the first time delay relay, one end of the second self-holding relay and one end of the third time delay relay; the normally closed contact of the third time delay relay is connected with the normally open contact of the second latching relay in series and then is connected with the inching type test button in parallel; the other end of the first time delay relay, the other end of the second self-holding relay and the other end of the third time delay relay are connected with the other end of the power supply pool; the normally open contact of the first time delay relay is connected with the test output terminal; and the test output terminal is connected with a signal wiring of the DCS control cabinet.
Preferably, the delay time of the first delay relay and the delay time of the third delay relay can be set, and the delay time of the third delay relay is greater than the delay time of the first delay relay.
Preferably, when the local terminal signal point is a switching value signal point, the local calibration apparatus includes: the device comprises a battery source, a power switch, a point-action type test button, a first delay relay, a second delay relay, a third delay relay, a fourth self-holding relay and a fifth delay relay; one end of the battery source is connected with one end of the power switch; the other end of the power switch is connected with one end of the inching type test button; the other end of the inching type test button is respectively connected with one end of a normally closed contact of the second time delay relay, one end of a normally closed contact of the third time delay relay, one end of a normally closed contact of the first time delay relay, one end of a fourth self-holding relay and one end of a fifth time delay relay; the normally closed contact of the fifth time delay relay and the normally open contact of the fourth self-holding relay are connected in series and then are connected with the inching type test button in parallel; the other end of the normally closed contact of the second time delay relay is connected with one end of the first time delay relay; the other end of the normally closed contact of the third time delay relay is connected with one end of the normally open contact of the first time delay relay, and the other end of the normally open contact of the first time delay relay is connected with one end of the second time delay relay; the other end of the normally closed contact of the first time delay relay is connected with one end of the normally open contact of the second time delay relay, and the other end of the normally open contact of the second time delay relay is connected with one end of the third time delay relay; the other end of the first time delay relay, the other end of the second time delay relay, the other end of the third time delay relay, the other end of the fourth self-holding relay and the other end of the fifth time delay relay are connected with the other end of the power supply pool; the normally closed contact of the second time delay relay is connected with the test output terminal; and the test output terminal is connected with a signal wiring of the DCS control cabinet.
Preferably, the delay time of the first delay relay, the delay time of the second delay relay, the delay time of the third delay relay and the delay time of the fifth delay relay are all set, and the delay time of the fifth delay relay is greater than the sum of the delay time of the first delay relay, the delay time of the second delay relay and the delay time of the third delay relay.
Preferably, when the local end signal point is an analog quantity signal point, the local calibrator is a loop calibrator.
On the other hand, the invention discloses a DCS-SIS-based signal channel single person checking method, which comprises the following steps:
the connection between the signal point of the local terminal and the signal wiring of the DCS control cabinet is released;
establishing connection between the local check meter and a signal connection wire of the DCS control cabinet;
the local calibration instrument sends a preset shaping calibration signal which is opened and closed in a delayed mode or an additional preset measuring range signal to a signal wiring of the DCS control cabinet for calibration;
inquiring an established trend inquiry group on a DCS engineer station, and confirming the correctness of each signal waveform, time and sequence in the trend group;
inquiring an established temporary event inquiry group in an SIS (SIS) system connected with a DCS (distributed control System) engineer station, and confirming the correctness of triggering of a corresponding signal;
and inquiring the signal display state of a local end signal point on an SIS system application interface in the mobile terminal to determine the correctness of the state.
Preferably, the signal path checking method further includes: and (4) listing a signal channel fault elimination plan for the switching value signal point signals or the analog value signal point signals which fail to be verified, and repeating verification until the verification is successful after the maintenance is carried out.
Preferably, when the local terminal signal point is a switching value signal point, the local calibration apparatus includes: the device comprises a battery source, a power switch, a point-operated test button, a first delay relay, a second self-holding relay and a third delay relay; one end of the battery source is connected with one end of the power switch; the other end of the power switch is connected with one end of the inching type test button; the other end of the point-operated test button is respectively connected with one end of the first time delay relay, one end of the second self-holding relay and one end of the third time delay relay; the normally closed contact of the third time delay relay is connected with the normally open contact of the second latching relay in series and then is connected with the inching type test button in parallel; the other end of the first time delay relay, the other end of the second self-holding relay and the other end of the third time delay relay are connected with the other end of the power supply pool; the normally open contact of the first time delay relay is connected with the test output terminal; the test output terminal is connected with a signal wiring of the DCS control cabinet;
the delay time of the first delay relay and the delay time of the third delay relay can be set, and the delay time of the third delay relay is larger than the delay time of the first delay relay.
Preferably, when the local terminal signal point is a switching value signal point, the local calibration apparatus includes: the device comprises a battery source, a power switch, a point-action type test button, a first delay relay, a second delay relay, a third delay relay, a fourth self-holding relay and a fifth delay relay; one end of the battery source is connected with one end of the power switch; the other end of the power switch is connected with one end of the inching type test button; the other end of the inching type test button is respectively connected with one end of a normally closed contact of the second time delay relay, one end of a normally closed contact of the third time delay relay, one end of a normally closed contact of the first time delay relay, one end of a fourth self-holding relay and one end of a fifth time delay relay; the normally closed contact of the fifth time delay relay and the normally open contact of the fourth self-holding relay are connected in series and then are connected with the inching type test button in parallel; the other end of the normally closed contact of the second time delay relay is connected with one end of the first time delay relay; the other end of the normally closed contact of the third time delay relay is connected with one end of the normally open contact of the first time delay relay, and the other end of the normally open contact of the first time delay relay is connected with one end of the second time delay relay; the other end of the normally closed contact of the first time delay relay is connected with one end of the normally open contact of the second time delay relay, and the other end of the normally open contact of the second time delay relay is connected with one end of the third time delay relay; the other end of the first time delay relay, the other end of the second time delay relay, the other end of the third time delay relay, the other end of the fourth self-holding relay and the other end of the fifth time delay relay are connected with the other end of the power supply pool; the normally closed contact of the second time delay relay is connected with the test output terminal; the test output terminal is connected with a signal wiring of the DCS control cabinet;
the delay time of the first delay relay, the delay time of the second delay relay, the delay time of the third delay relay and the delay time of the fifth delay relay can be set, and the delay time of the fifth delay relay is greater than the sum of the delay time of the first delay relay, the delay time of the second delay relay and the delay time of the third delay relay.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the DCS-SIS-based signal channel single-person checking system and method, signal wiring at the DCS control cabinet end does not need to be removed, the signal channel can be checked by a single person operating the local checking instrument, the checking speed is high, and a large amount of labor cost can be saved; specifically, during verification, the connection between the local end signal point and the wiring of the DCS control cabinet is removed, and the connection between the local verification instrument and the wiring of the DCS control cabinet is established; after a single person finishes sending the check signal by operating the on-site check meter, checking results can be checked through one or more of a DCS engineer station, an SIS system and a mobile terminal, and the mobile terminal can be held by the check person or placed around the check person, so that the check result can be checked in real time after the check signal is sent; for the DCS engineer station and the SIS system, because the DCS engineer station and the SIS system are arranged in a machine room or a monitoring room which is at a certain distance from a verifying worker, in order to save time, the verifying worker can check a plurality of on-site end signal points and then check batch verification results, and the specific number of the on-site end signal points can be configured through the DCS engineer station or the SIS system;
(2) when the local end signal point is subjected to primary verification, the local calibrator for transmitting a single shaping verification signal can be adopted to realize quick verification; and secondary verification can be performed on local end signal points with incorrect or problematic verification results, and a local calibrator for sending a plurality of shaping verification signals is adopted during secondary verification so as to ensure the accuracy of detection results.
Drawings
FIG. 1 is a schematic diagram of a DCS-SIS system connection when not verified;
FIG. 2 is a system connection diagram according to an embodiment of the present invention;
FIG. 3 is a DCS trend chart for an embodiment of the present invention;
FIG. 4 is a diagram of an SIS query interface according to an embodiment of the present invention; wherein, (a) the number of verification actions is marked; (b) the time of the verification action is marked;
FIG. 5 is an APP interface diagram of a mobile terminal according to an embodiment of the present invention;
FIG. 6 is a first exemplary in-situ prover of an embodiment of the invention; wherein, (a) and (b) represent internal circuit diagrams; FIG. (c) is a view showing an external structure;
FIG. 7 is a second exemplary in-situ verifier of an embodiment of the present invention; wherein, (a) and (b) represent internal circuit diagrams; FIG. (c) is a view showing an external structure;
FIG. 8 is a schematic flow diagram of the method of the present invention;
FIG. 9 is a flow chart of an embodiment of the method of the present invention; wherein (a) is a pretreatment process; FIG. b shows a verification process.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, during normal connection, the local control device is connected to the local terminal block (one local terminal block is connected to a plurality of local end signal points, each local end signal point includes two terminals), the local end signal points on the local terminal block are connected to the DCS control cabinet through signal cables, and the DCS control cabinet is connected to a DCS engineer station through an industrial control network; the SIS database server is connected with the DCS engineer station through a network to acquire data of the DCS engineer station; the OA office computer accesses the SIS website through the network to acquire data of the SIS database server (the SIS database server, the SIS website and the like form an SIS system), and meanwhile, the mobile terminal (a smart phone, a handheld PAD and the like) accesses the SIS system through the network to perform real-time monitoring.
It should be noted that the above is only a possible general flow of a control system including a DCS system and an SIS system, and the specific flow can be adjusted according to the actual application. In the above process, the functions of the DCS control cabinet, the DCS engineer station, the SIS system, and the monitoring interface on the mobile terminal accessing the SIS system may all be implemented by using the existing technology, and this embodiment is not specifically described.
Referring to fig. 2, which is a schematic connection diagram of an embodiment of the present invention, the DCS-SIS based single signal channel verification system of the present invention includes an on-site calibrator, a DCS system, an SIS system, and a mobile terminal;
the local calibrator is connected with the wiring of the DCS and used for sending a preset shaping calibration signal for delayed switching to the DCS or adding a preset range signal to the DCS for calibration;
the DCS system comprises a DCS control cabinet and an engineer station which are connected; during verification, the signal wiring of the DCS control cabinet is disconnected with a local end signal point and is connected with the local calibrator; the engineer station establishes one or more trend query groups according to the position sequence of the local end signal points to be verified so as to record corresponding local end signal point verification results;
the SIS system is connected with the engineer station; compiling a signal trigger event condition of a local end signal point by using an event statistical function of an SIS system data query module and a delay switching condition of the local calibrator so as to record a corresponding local end signal point calibration result;
the mobile terminal is connected with the SIS system and comprises an application unit for displaying the signal display state of the local terminal signal point so as to display the corresponding local terminal signal point verification result in real time.
Specifically, as shown in fig. 3 (only waveforms are listed in fig. 3, and the actual graph corresponds to time), after the verifying personnel completes one group (10-50 points) of local end signal points and adds the verifying signal, the verifying personnel returns to the DCS engineer station to check the established trend query group, checks the signal time against the field work record list, and confirms the correctness of each signal waveform, time and sequence in the trend group.
The SIS query interface event statistical chart is shown in fig. 4, after a checker finishes adding a group (10-50 points) of local end signal points with check signals, the check signals are returned to an office computer to check a temporary event query group customized by the SIS system, and the signal time is checked according to a field work record list to confirm the correctness of the triggering of the corresponding local end signal.
As shown in fig. 5, after the verifying personnel completes the addition of the corresponding local end signal point and the verifying signal, the verifying personnel can judge through the color change of the valve in the drawing, if the valve is green, the corresponding switching value is closed, if the valve is red, the corresponding switching value is opened, and the correctness of the verifying result is confirmed according to the display state of the corresponding signal on the interface of the mobile terminal.
It should be noted that, for the same local-end signal point, the verification result can be confirmed through one or more of a DCS trend graph, an SIS query interface event statistical graph, and a mobile terminal APP interface, where the DCS trend graph and the mobile terminal APP interface can track a switching value signal point and/or an analog value signal point, but the SIS query interface event statistical graph can only track the switching value signal point.
Further, when the local end signal point is an analog quantity signal point, the local check meter is a loop check meter, the loop check meter adopts the existing loop check meter, and the embodiment of the invention is not described in detail.
Referring to fig. 6, when the local side signal point is a switching value signal point, the local calibration apparatus of the present invention includes: the device comprises a battery source, a power switch, a point-operated test button, a first time delay relay K1, a second self-holding relay K2 and a third time delay relay K3; one end of the battery source is connected with one end of the power switch; the other end of the power switch is connected with one end of the inching type test button; the other end of the point-operated test button is respectively connected with one end of the first time delay relay K1, one end of the second self-holding relay K2 and one end of the third time delay relay K3; the normally closed contact of the third time delay relay K3 and the normally open contact of the second self-holding relay K2 are connected in series and then are connected with the point-action type test button in parallel; the other end of the first time delay relay K1, the other end of the second self-holding relay K2 and the other end of the third time delay relay K3 are all connected with the other end of the power supply pool; the normally open contact of the first time delay relay K1 is connected with a test output terminal; and the test output terminal is connected with a signal wiring of the DCS control cabinet.
The delay time of the first delay relay K1 and the delay time of the third delay relay K3 can be set, and the delay time of the third delay relay K3 is larger than that of the first delay relay K1.
During specific operation, a power switch is pressed to switch on a power supply, the upper end knobs of the first delay relay K1 and the third delay relay K3 are used for adjusting delay time (1-10 seconds), the delay time of the third delay relay K3 is larger than that of the first delay relay K1, in the embodiment, the delay time of the first delay relay K1 is set to be 2S, and the delay time of the third delay relay K3 is set to be 5S. During checking, terminal wiring of a local end signal point is removed, the signal wiring of the DCS control cabinet is in butt joint with a test output terminal (the test output terminal is provided with various interfaces such as an alligator clip, a test contact pin and a hinge line), and a shaping checking signal set according to time delay can be sent to the signal wiring of the DCS control cabinet by inching the inching type test button, specifically, a waveform of 2S disconnection and 3S connection is obtained. And after one local end signal point is verified, restoring the terminal wiring of the local end signal point. According to the sequence in the trend query group established in the engineer station, the terminal wiring of the next local end signal point is removed, the signal wiring of the corresponding DCS control cabinet is in butt joint with the test output terminal, the point-moving type test button is moved to complete verification, and the like until all preset points are verified.
Based on above-mentioned check gauge on spot, the check-up personnel can accomplish the transmission of check-up signal fast, combines one or more in DCS trend graph, SIS inquiry interface event statistical chart and the mobile terminal APP interface to realize that single accomplishes the check-up of on-the-spot end signal point fast, practices thrift a large amount of human costs.
Further, since the in-situ calibrator transmits only one shaped wave, it may cause inaccurate calibration results in some cases. For signal points which fail to be verified, another local calibrator can be used for further verification to ensure the correctness of the result.
Specifically, referring to fig. 7, the in-situ calibrator includes: the in-situ calibrator includes:
the device comprises a battery source, a power switch, a point-action test button, a first time delay relay K1, a second time delay relay K2, a third time delay relay K3, a fourth self-holding relay K4 and a fifth time delay relay K5; one end of the battery source is connected with one end of the power switch; the other end of the power switch is connected with one end of the inching type test button; the other end of the inching type test button is respectively connected with one end of a normally closed contact of the second time delay relay K2, one end of a normally closed contact of the third time delay relay K3, one end of a normally closed contact of the first time delay relay K1, one end of the fourth self-holding relay K4 and one end of the fifth time delay relay K5; the normally closed contact of the fifth time delay relay K5 and the normally open contact of the fourth self-holding relay K4 are connected in series and then are connected with the inching type test button in parallel; the other end of the normally closed contact of the second time delay relay K2 is connected with one end of the first time delay relay K1; the other end of the normally closed contact of the third time delay relay K3 is connected with one end of the normally open contact of the first time delay relay K1, and the other end of the normally open contact of the first time delay relay K1 is connected with one end of the second time delay relay K2; the other end of the normally closed contact of the first time delay relay K1 is connected with one end of the normally open contact of the second time delay relay K2, and the other end of the normally open contact of the second time delay relay K2 is connected with one end of the third time delay relay K3; the other end of the first time delay relay K1, the other end of the second time delay relay K2, the other end of the third time delay relay K3, the other end of the fourth self-holding relay K4 and the other end of the fifth time delay relay K5 are all connected with the other end of the power supply pool; the normally closed contact of the second time delay relay K2 is connected with a test output terminal; and the test output terminal is connected with a signal wiring of the DCS control cabinet.
The delay time of the first delay relay K1, the delay time of the second delay relay K2, the delay time of the third delay relay K3 and the delay time of the fifth delay relay K5 may be set, and the delay time of the fifth delay relay K5 is greater than the sum of the delay time of the first delay relay K1, the delay time of the second delay relay K2 and the delay time of the third delay relay K3.
In the specific operation, a power switch is pressed to switch on a power supply, a knob at the upper end of a first delay relay K1, a second delay relay K2, a third delay relay K3 and a fifth delay relay K5 is used for adjusting the delay time (1-20 seconds), and the delay time of the fifth delay relay K5 is greater than the sum of the delay time of the first delay relay K1, the delay time of the second delay relay K2 and the delay time of the third delay relay K3. During verification, terminal wiring of a local end signal point is removed, the signal wiring of the DCS control cabinet is in butt joint with a test output terminal (the test output terminal is provided with various interfaces such as an alligator clip, a test contact pin and a hinge line), and a point-moving type test button is clicked to send a shaping verification signal set according to time delay to the signal wiring of the DCS control cabinet, specifically five waveforms of 1S disconnection and 2S connection, which require 15S in total.
It should be understood that the in-situ calibrator shown in fig. 7 may be used for the initial calibration, but since the time for a single calibration of the in-situ calibrator is longer than that of the in-situ calibrator shown in fig. 6 by 3 times or more, the in-situ calibrator shown in fig. 6 is preferably used for calibrating the switching value signal point, and the in-situ calibrator shown in fig. 7 is used only when the re-calibration is needed.
According to another aspect of the present invention, referring to fig. 8, a DCS-SIS based single-person verification method for signal channels is characterized by comprising:
s801, removing connection between the signal point of the local terminal and the signal wiring of the DCS control cabinet; the local end signal points comprise switching value signal points and/or analog value signal points;
s802, establishing connection between a local check meter and the signal wiring of the DCS control cabinet;
s803, for the switching value signal point, the local calibration instrument sends a preset shaping calibration signal for delayed switching to the signal wiring of the DCS control cabinet for calibration; for analog quantity signal points, the local calibration instrument adds a preset range signal to the DCS control cabinet for calibration; recording the time of the check signal;
s804, inquiring an established trend inquiry group on a DCS engineer station, and confirming the correctness of each signal waveform, time and sequence in the trend group by contrasting the recorded verification signal time; the trend query group comprises a switching value signal point signal and/or an analog value signal point signal;
s805, inquiring an established temporary event inquiry group in an SIS system connected with a DCS engineer station, and checking the recorded verification signal time to confirm the correctness of the corresponding signal trigger; the temporary event query group comprises a switching value signal point signal;
s806, inquiring the signal display state of the local end signal point on the SIS system application interface in the mobile terminal, and determining the correctness of the state.
Referring to fig. 9, a specific implementation of the DCS-SIS based single-person verification method for signal channels is shown, it should be noted that the present invention is mainly directed to local input points.
It should be noted that not every local endpoint signal point to be verified needs to be tracked on the trend query set, the temporary event query set, and the SIS system application interface, as long as there is tracking in one of the trend query set, the temporary event query set, or the SIS system application interface. As described in fig. 9, for local end signal points with dispersed connection locations, a mobile terminal interface or a temporary event query group established in the SIS system is generally selected for verification, and for local end signal points with concentrated connection locations, a trend query group of the DCS system is selected for verification. Of course, two or three of the trend query group, the temporary event query group, and the SIS system application interface may be selected to verify the local endpoint signal points to be verified, and the local endpoint signal points are processed according to actual situations.
In a single signal channel checking method based on DCS-SIS, the specific implementation of the local checking instrument is the same as that of a single signal channel checking system based on DCS-SIS, and the description is not repeated in the embodiment.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (10)
1. A single verification system of signal channel based on DCS-SIS is characterized by comprising an on-site calibrator, a DCS system, an SIS system and a mobile terminal;
the local calibrator is connected with the wiring of the DCS and used for sending a preset shaping calibration signal for delayed switching to the DCS or adding a preset range signal to the DCS for calibration;
the DCS system comprises a DCS control cabinet and an engineer station which are connected; during verification, the signal wiring of the DCS control cabinet is disconnected with a local end signal point and is connected with the local calibrator; the engineer station establishes one or more trend query groups according to the position sequence of the local end signal points to be verified so as to record corresponding local end signal point verification results;
the SIS system is connected with the engineer station; compiling a signal trigger event condition of a local end signal point by using an event statistical function of an SIS system data query module and a delay switching condition of the local calibrator so as to record a corresponding local end signal point calibration result;
the mobile terminal is connected with the SIS system and comprises an application unit for displaying the signal display state of the local terminal signal point so as to display the corresponding local terminal signal point verification result in real time.
2. The DCS-SIS based signal path single person verification system of claim 1, wherein when the local verification meter is a switching value signal point, the local verification meter comprises: the device comprises a battery source, a power switch, a point-operated test button, a first delay relay, a second self-holding relay and a third delay relay; one end of the battery source is connected with one end of the power switch; the other end of the power switch is connected with one end of the inching type test button; the other end of the point-operated test button is respectively connected with one end of the first time delay relay, one end of the second self-holding relay and one end of the third time delay relay; the normally closed contact of the third time delay relay is connected with the normally open contact of the second latching relay in series and then is connected with the inching type test button in parallel; the other end of the first time delay relay, the other end of the second self-holding relay and the other end of the third time delay relay are connected with the other end of the power supply pool; the normally open contact of the first time delay relay is connected with the test output terminal; and the test output terminal is connected with a signal wiring of the DCS control cabinet.
3. The DCS-SIS based signal channel single person verification system of claim 2, wherein both the delay time of the first delay relay and the delay time of the third delay relay can be set, and the delay time of the third delay relay is greater than the delay time of the first delay relay.
4. The DCS-SIS based signal path single person verification system of claim 1, wherein when the local verification meter is a switching value signal point, the local verification meter comprises: the device comprises a battery source, a power switch, a point-action type test button, a first delay relay, a second delay relay, a third delay relay, a fourth self-holding relay and a fifth delay relay; one end of the battery source is connected with one end of the power switch; the other end of the power switch is connected with one end of the inching type test button; the other end of the inching type test button is respectively connected with one end of a normally closed contact of the second time delay relay, one end of a normally closed contact of the third time delay relay, one end of a normally closed contact of the first time delay relay, one end of a fourth self-holding relay and one end of a fifth time delay relay; the normally closed contact of the fifth time delay relay and the normally open contact of the fourth self-holding relay are connected in series and then are connected with the inching type test button in parallel; the other end of the normally closed contact of the second time delay relay is connected with one end of the first time delay relay; the other end of the normally closed contact of the third time delay relay is connected with one end of the normally open contact of the first time delay relay, and the other end of the normally open contact of the first time delay relay is connected with one end of the second time delay relay; the other end of the normally closed contact of the first time delay relay is connected with one end of the normally open contact of the second time delay relay, and the other end of the normally open contact of the second time delay relay is connected with one end of the third time delay relay; the other end of the first time delay relay, the other end of the second time delay relay, the other end of the third time delay relay, the other end of the fourth self-holding relay and the other end of the fifth time delay relay are connected with the other end of the power supply pool; the normally closed contact of the second time delay relay is connected with the test output terminal; and the test output terminal is connected with a signal wiring of the DCS control cabinet.
5. The DCS-SIS based signal channel single person verification system of claim 4, wherein the delay time of the first delay relay, the delay time of the second delay relay, the delay time of the third delay relay and the delay time of the fifth delay relay are all set, and the delay time of the fifth delay relay is greater than the sum of the delay time of the first delay relay, the delay time of the second delay relay and the delay time of the third delay relay.
6. The DCS-SIS based signal path single person verification system of claim 1, wherein the in-situ verifier is a loop verifier when the in-situ terminal signal point is an analog signal point.
7. A DCS-SIS-based signal channel single person verification method is characterized by comprising the following steps:
the connection between the signal point of the local terminal and the signal wiring of the DCS control cabinet is released;
establishing connection between the local check meter and a signal connection wire of the DCS control cabinet;
the local calibration instrument sends a preset shaping calibration signal which is opened and closed in a delayed mode or an additional preset measuring range signal to a signal wiring of the DCS control cabinet for calibration;
inquiring an established trend inquiry group on a DCS engineer station, and confirming the correctness of each signal waveform, time and sequence in the trend group;
inquiring an established temporary event inquiry group in an SIS (SIS) system connected with a DCS (distributed control System) engineer station, and confirming the correctness of triggering of a corresponding signal;
and inquiring the signal display state of a local end signal point on an SIS system application interface in the mobile terminal to determine the correctness of the state.
8. The DCS-SIS based signal path single person verification method of claim 7, further comprising: and (4) listing a signal channel fault elimination plan for the switching value signal point signals or the analog value signal point signals which fail to be verified, and repeating verification until the verification is successful after the maintenance is carried out.
9. The DCS-SIS based signal channel single person verification method of claim 7, wherein when the local terminal signal point is a switching value signal point, the local verification instrument comprises: the device comprises a battery source, a power switch, a point-operated test button, a first delay relay, a second self-holding relay and a third delay relay; one end of the battery source is connected with one end of the power switch; the other end of the power switch is connected with one end of the inching type test button; the other end of the point-operated test button is respectively connected with one end of the first time delay relay, one end of the second self-holding relay and one end of the third time delay relay; the normally closed contact of the third time delay relay is connected with the normally open contact of the second latching relay in series and then is connected with the inching type test button in parallel; the other end of the first time delay relay, the other end of the second self-holding relay and the other end of the third time delay relay are connected with the other end of the power supply pool; the normally open contact of the first time delay relay is connected with the test output terminal; the test output terminal is connected with a signal wiring of the DCS control cabinet;
the delay time of the first delay relay and the delay time of the third delay relay can be set, and the delay time of the third delay relay is larger than the delay time of the first delay relay.
10. The DCS-SIS based signal channel single person verification method of claim 7, wherein when the local terminal signal point is a switching value signal point, the local verification instrument comprises: the device comprises a battery source, a power switch, a point-action type test button, a first delay relay, a second delay relay, a third delay relay, a fourth self-holding relay and a fifth delay relay; one end of the battery source is connected with one end of the power switch; the other end of the power switch is connected with one end of the inching type test button; the other end of the inching type test button is respectively connected with one end of a normally closed contact of the second time delay relay, one end of a normally closed contact of the third time delay relay, one end of a normally closed contact of the first time delay relay, one end of a fourth self-holding relay and one end of a fifth time delay relay; the normally closed contact of the fifth time delay relay and the normally open contact of the fourth self-holding relay are connected in series and then are connected with the inching type test button in parallel; the other end of the normally closed contact of the second time delay relay is connected with one end of the first time delay relay; the other end of the normally closed contact of the third time delay relay is connected with one end of the normally open contact of the first time delay relay, and the other end of the normally open contact of the first time delay relay is connected with one end of the second time delay relay; the other end of the normally closed contact of the first time delay relay is connected with one end of the normally open contact of the second time delay relay, and the other end of the normally open contact of the second time delay relay is connected with one end of the third time delay relay; the other end of the first time delay relay, the other end of the second time delay relay, the other end of the third time delay relay, the other end of the fourth self-holding relay and the other end of the fifth time delay relay are connected with the other end of the power supply pool; the normally closed contact of the second time delay relay is connected with the test output terminal; the test output terminal is connected with a signal wiring of the DCS control cabinet;
the delay time of the first delay relay, the delay time of the second delay relay, the delay time of the third delay relay and the delay time of the fifth delay relay can be set, and the delay time of the fifth delay relay is greater than the sum of the delay time of the first delay relay, the delay time of the second delay relay and the delay time of the third delay relay.
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