CN105300700A - Engine test parking protection system and test bed measurement and control system with engine test parking protection system - Google Patents
Engine test parking protection system and test bed measurement and control system with engine test parking protection system Download PDFInfo
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- CN105300700A CN105300700A CN201510755664.3A CN201510755664A CN105300700A CN 105300700 A CN105300700 A CN 105300700A CN 201510755664 A CN201510755664 A CN 201510755664A CN 105300700 A CN105300700 A CN 105300700A
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Abstract
The invention discloses an engine test parking protection system and a test bed measurement and control system with the engine test parking protection system. The parking protection system comprises a first data acquisition module which is used for acquiring engine state parameters and test bed control parameters and transmitting the acquired parameter information to a PLC; and a second data acquisition module which is used for acquiring the engine state parameters and the test bed control parameters and transmitting the acquired parameter information to an industrial control computer. The first data acquisition module and the second data acquisition module are connected with sensors used for parameter acquisition through a one-in two-out and three-terminal isolated signal isolation module. The PLC and the industrial control computer independently perform parking protection on the engine test in a parallel way. Complete parallel and independent engine parking protection is realized, engine test operation reliability and test bed signal fault analysis and troubleshooting efficiency are enhanced, protection parameter scanning frequency is accelerated and parking delay is reduced, and thus the protection parameter acquisition values in parking are enabled to be closer to the set value.
Description
Technical field
The present invention relates to engine run control field, especially, relate to a kind of stop-working protection system of engine run.In addition, the invention still further relates to a kind of test bay TT&C system comprising above-mentioned stop-working protection system.
Background technology
Aeromotor is in commissioning process; real-time engine state parameters and necessary test bay equipment or controling parameters are monitored of TT&C system; wherein some important parameter must arrange stop-working protection value; when monitored parameter does not meet the demands; TT&C system can automatically perform parking action at once, to avoid causing damage to engine.
With reference to Fig. 1; prior art generally selects outside data acquisition bus (VXI) system and programmable logic controller (PLC) (PLC) field control system to set up test bay TT&C system hardware; test program can be provided with the protection value of related parameter by operator; and in commissioning process automatic decision; if meet cutoff command, assign cutoff command and performed an action by VXI system or PLC system.
Wherein, VXI system comprises:
1, AD acquisition module completes the analog acquisition of engine and all monitored parameters of test bay, such as: temperature, pressure etc.
2, digital I/O module completes the monitoring of all valve events.
3, the collection of frequency, counting module execution cycle signal, such as: rotating speed, flow etc.
4, DA output module is used for providing the adjustable current/voltage needed for control (driving) load.
PLC system is only equipped with I/O module, in order to monitoring, the action performing all consing buttons.VXI system Real-time Collection engine state parameters communication are adopted industrial computer store to numbers; number is adopted industrial computer execution test program and is judged whether to reach Parking condition to the protection value real time contrast set; if satisfy condition; assign instruction to VXI system and complete parking action by I/O module; also synchronously assign cutoff command to PLC simultaneously; to prevent when VXI or PLC breaks down, engine cut-off action can not be automatically performed reliably.
In addition, for preventing PLC and VXI from automatically protecting parking function all to lose efficacy, test bay also has people for the locking key that stops in emergency, and is used for performing artificial judgement protection and stops.
But there is following problem in existing engine testsand protection parking:
1, VXI system and PLC system can not complete parallel, independently perform protection act.The mechanism gathered and judge only has one, and this part is shared dependent.
2, the reliability of data actuation (VXI+ industrial computer) is compared PLC and is slightly not so good as, and the PLC that reliability is high is inoperative on the contrary.Due to VXI and PLC protection parking action in fact and asynchronous, VXI performs an action prior to PLC, if the parking action of VXI was not lost efficacy, the protection parking function of PLC would not work.VXI is as the acquisition system of stable state, and test program is traditionally arranged to be 10Hz or 20Hz for the reading of VXI, write frequency, but the frequency of test program and plc communication is determined on a case-by-case basis, and is less than 10Hz more.The time delay that such VXI performs parking action is not more than 0.1s, and PLC performs an action after receiving the cutoff command of test program transmission again, and time delay is more than 0.1s.
3, PLC is in fact only a topworks as the industrial computer performing test program, has not given play to the effect that this has.
If 4 occur that test program does not arrange the mistakes such as protection value, test program runs industrial computer hardware and software failure or the faults such as VXI, PLC and industrial computer communication disruption such as makeing mistakes, TT&C system does not perform protection parking action.The protected subsystem security risk of TT&C system is comparatively large, and reliability has much room for improvement.
Summary of the invention
The invention provides a kind of stop-working protection system of engine run and there is its test bay TT&C system, the technical matters had much room for improvement with the reliability of the stop-working protection solving existing engine testsand TT&C system.
The technical solution used in the present invention is as follows:
According to an aspect of the present invention, a kind of stop-working protection system of engine run is provided, comprises:
First number adopts module, for gathering the controling parameters of engine state parameters and test bay and the parameter information of collection being passed to PLC;
Second number adopts module, for gathering the controling parameters of engine state parameters and test bay and the parameter information of collection being passed to industrial computer;
First number is adopted module and the second number and is adopted module through one-in-and-two-out and the signal isolation module of three ends isolation is connected sensor for parameter acquisition;
PLC and industrial computer walk abreast and carry out stop-working protection to engine run independently.
Further, the second number is adopted module and is adopted external number to adopt the AD acquisition module of bus system, and the industrial computer I/O module output order of adopting bus system through external number to the topworks of engine and test bay to perform stop-working protection.
Further; PLC adopts the controling parameters of module independent acquisition engine state parameters and test bay through the first number; and the threshold parameter preset in PLC for stop-working protection, by gathering and comparison input parameter and threshold parameter, and automatically perform stop-working protection through the I/O module of PLC.
Further; threshold parameter preset in PLC is arranged separately according to the model of engine; and test bay control panel is provided with the multi-way switch selected for engine model, the defence program that multi-way switch mates with the model of engine for gating carries out stop-working protection as inputting instruction to PLC and/or industrial computer.
Further, the sample frequency of PLC is adjustable.
Further, PLC and industrial computer communicate to connect, and the sample frequency of PLC is higher than the sample frequency of industrial computer, the inputoutput data of industrial computer record PLC, for follow-up stop-working protection breakdown judge.
Further, the stop-working protection system of engine run of the present invention also comprises:
For controlling the locking key that test bay stops in emergency, artificially judge protection to perform engine run.
According to a further aspect in the invention, also provide a kind of test bay TT&C system, comprise the stop-working protection system of above-mentioned engine run.
The present invention has following beneficial effect:
The stop-working protection system of engine run of the present invention, module is adopted by the first number arranging the independent controling parameters for gathering engine state parameters and test bay to PLC, and industrial computer adopts the controling parameters of module acquires engine state parameters and test bay by the second number, first number is adopted module and the second number and is adopted module and be connected sensor for parameter acquisition through signal isolation module, an original road parameter signal is made to be converted into the two paths of signals of isolation mutually, and carry out stop-working protection judgement by industrial computer and PLC respectively, achieve complete parallel, independently engine cut-off protection, improve the operational reliability of engine run, and it is parallel, independently detection system is conducive to the analysis improving test bay signal fault, investigation efficiency, and accelerate the sweep frequency of Protection parameters and decrease to stop and postpone, make Protection parameters collection value during parking closer to settings, the effective degree controlling the excess revolutions of engine overtemperature more rapidly, thus further minimizing equipment instability and human error are on the impact of protection system.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of existing aircraft engine test stand TT&C system;
Fig. 2 is the structural representation of the stop-working protection system of preferred embodiment of the present invention engine run.
Description of reference numerals:
10, signal isolation module;
20, the first number adopts module;
30, the second number adopts module;
40、PLC；
50, industrial computer;
60, VXII/O module.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
With reference to Fig. 2, the preferred embodiments of the present invention provide a kind of stop-working protection system of engine run, and the present embodiment stop-working protection system comprises:
First number adopts module 20, for gathering the controling parameters of engine state parameters and test bay and the parameter information of collection being passed to PLC40;
Second number adopts module 30, for gathering the controling parameters of engine state parameters and test bay and the parameter information of collection being passed to industrial computer 50;
First number is adopted module 20 and the second number and is adopted module 30 through one-in-and-two-out and the signal isolation module 10 of three ends isolation is connected sensor for parameter acquisition;
PLC40 and industrial computer 50 walk abreast and carry out stop-working protection to engine run independently.
The present embodiment is in engine run process; sensor is adopted to detect in real time to the parameter being provided with protection value; for example; the trial speed of engine and working temperature detect through speed probe, temperature sensor; and the signal that sensor detects is converted to the two paths of signals of isolation mutually through signal isolation module 10; wherein, a road parameter signal is adopted module 20 through the first number and is passed to PLC40, and another road parameter signal is adopted module 30 through the second number and passed to industrial computer 50.PLC40 and industrial computer 50 walk abreast and carry out stop-working protection to engine run independently; the Protection parameters such as rotating speed, temperature of scanning collection as autonomous in PLC40 and with the numerical value multilevel iudge in storage unit; control the closedown of engine operation valve through I/O module output order, engine Fuel Bleed Valve opens and test bay fuel oil inlet valve cuts out, to carry out stop-working protection.
Compared with existing test bay TT&C system, the present embodiment is equipped with analogue collection module to PLC40, and PLC40 just can completely independently gather, judge and perform parking action.The present embodiment achieves complete parallel, independently engine cut-off protection; improve the operational reliability of engine run; and parallel, independently detection system be conducive to the analysis, the investigation efficiency that improve test bay signal fault; and accelerate the sweep frequency of Protection parameters and decrease to stop and postpone; make Protection parameters collection value during parking closer to settings; the effective degree controlling the excess revolutions of engine overtemperature more rapidly, thus further minimizing equipment instability and human error are on the impact of protection system.
In the present embodiment; PLC40 adopts the controling parameters of module 20 independent acquisition engine state parameters and test bay through the first number; and the threshold parameter preset in PLC40 for stop-working protection; by gathering and comparison input parameter and threshold parameter, and automatically perform stop-working protection through the I/O module of PLC40.Wherein, the first number adopts the SM331 acquisition module that module 20 adopts Siemens Company, possesses independently gather protection channel to make PLC40.
In the present embodiment, the second number is adopted module 30 and is adopted external number to adopt the AD acquisition module of bus system VXI, and industrial computer 50 through VXII/O module 60 output order to the topworks of engine and test bay to perform stop-working protection.As controlled through VXII/O module 60 output order, engine runs valve cut out, engine Fuel Bleed Valve is opened and test bay fuel oil inlet valve cuts out, to carry out stop-working protection.
Threshold parameter preset in the present embodiment PLC40 is arranged separately according to the model of engine; and test bay control panel is provided with the multi-way switch selected for engine model, the defence program that multi-way switch mates with the model of engine for gating carries out stop-working protection as inputting instruction to PLC40 and/or industrial computer 50.Particularly, ride control panel increases a multi-way switch selected for engine model, the signal of this multi-way switch as the input signal of PLC40 and industrial computer 50, carries out engine model judgement for the preposition program of test run, and automatically enters corresponding test program simultaneously.
Preferably, the sample frequency of the present embodiment PLC40 is adjustable.More preferably; PLC40 carries out reading with the frequency of 100Hz, write operation; the Protection parameters such as autonomous scanning collection rotating speed, temperature also compare judgement with the numerical value in data cell, if this parameter read has satisfied condition, then after going up once write operation again, perform parking action.Time delay is 0.01s (disregarding the valve event time), and PLC40 can perform protection act independent of the data actuation be made up of VXI and industrial computer.The present embodiment is by accelerating the sweep frequency to Protection parameters; decrease the time delay of TT&C system stop-working protection; and weaken the master control status of industrial computer, change the status of traditional PLC as the topworks of industrial computer, make PLC can carry out stop-working protection separately.
In actual application, the result of the stop-working protection system of the present embodiment is as follows:
1, when industrial computer 50 all arranges protection value with PLC40, PLC40 works prior to industrial computer 50.
2, when industrial computer 50 does not arrange protection value, the defencive function proper function of PLC40.
3, when PLC40 does not arrange protection value, when industrial computer 50 arranges protection value, industrial computer 50 defencive function is normal, but when stopping, the collection value of Protection parameters is higher than collection value when PLC40 protects.
4, when VXI transmission line is out of order, TT&C system defencive function is normal.
5, communicate between PLC40 with industrial computer 50 when being out of order, TT&C system defencive function is normal.
6, for the engine of different model, PLC40 can independently arrange stop-working protection value to each model.
7, industrial computer 50 communicates with PLC40; the input and output of PLC40 are recorded (frequency acquisition adopted with number); because the sample frequency of PLC adopts frequency higher than the number of industrial computer 50; industrial computer 50 performs an action so can record PLC; do not record the precise time performed an action; but the course data of adopting record from number can analyze, be the parking action of PLC execution or the cutoff command provided by VXI, for follow-up stop-working protection breakdown judge.
Preferably, the stop-working protection system of the present embodiment engine run also comprises:
For controlling the locking key that test bay stops in emergency, artificially judge protection to perform engine run.
According to a further aspect in the invention, also provide a kind of test bay TT&C system, comprise the stop-working protection system of the engine run of above-described embodiment.By adopting this stop-working protection system, engine run process to be walked abreast, stop-working protection independently, improve the safe reliability of commissioning process.
From above description, can learn: the present embodiment adopts module by the first number arranging the independent controling parameters for gathering engine state parameters and test bay to PLC, and industrial computer adopts the controling parameters of module acquires engine state parameters and test bay by the second number, first number is adopted module and the second number and is adopted module and be connected sensor for parameter acquisition through signal isolation module, an original road parameter signal is made to be converted into the two paths of signals of isolation mutually, and carry out stop-working protection judgement by industrial computer and PLC respectively, achieve complete parallel, independently engine cut-off protection, improve the operational reliability of engine run, and it is parallel, independently detection system is conducive to the analysis improving test bay signal fault, investigation efficiency, and accelerate the sweep frequency of Protection parameters and decrease to stop and postpone, make Protection parameters collection value during parking closer to settings, the effective degree controlling the excess revolutions of engine overtemperature more rapidly, thus further minimizing equipment instability and human error are on the impact of protection system.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a stop-working protection system for engine run, is characterized in that, comprising:
First number adopts module (20), for gathering the controling parameters of engine state parameters and test bay and the parameter information of collection being passed to PLC (40);
Second number adopts module (30), for gathering the controling parameters of engine state parameters and test bay and the parameter information of collection being passed to industrial computer (50);
Described first number is adopted module (20) and described second number and is adopted module (30) through one-in-and-two-out and the signal isolation module (10) of three ends isolation is connected sensor for parameter acquisition;
Described PLC (40) carries out stop-working protection to engine run independently with described industrial computer (50) is parallel.
2. the stop-working protection system of engine run according to claim 1, is characterized in that,
Described second number is adopted module (30) and is adopted external number to adopt the AD acquisition module of bus system, and described industrial computer (50) the I/O module output order of adopting bus system through external number to the topworks of engine and test bay to perform stop-working protection.
3. the stop-working protection system of engine run according to claim 2, is characterized in that,
Described PLC (40) adopts the controling parameters of module (20) independent acquisition engine state parameters and test bay through described first number; and the threshold parameter preset in described PLC (40) for stop-working protection; by gathering and comparison input parameter and threshold parameter, and automatically perform stop-working protection through the I/O module of PLC (40).
4. the stop-working protection system of engine run according to claim 3, is characterized in that,
In described PLC (40), preset described threshold parameter is arranged separately according to the model of engine; and test bay control panel is provided with the multi-way switch selected for engine model, the defence program that described multi-way switch mates with the model of described engine for gating carries out stop-working protection as inputting instruction to described PLC (40) and/or described industrial computer (50).
5. the stop-working protection system of engine run according to claim 4, is characterized in that,
The sample frequency of described PLC (40) is adjustable.
6. the stop-working protection system of engine run according to claim 5, is characterized in that,
Described PLC (40) and described industrial computer (50) communicate to connect; and the sample frequency of described PLC (40) is higher than the sample frequency of described industrial computer (50); described industrial computer (50) records the inputoutput data of described PLC (40), for follow-up stop-working protection breakdown judge.
7., according to the stop-working protection system of the arbitrary described engine run of claim 1 to 6, it is characterized in that, also comprise:
For controlling the locking key that test bay stops in emergency, artificially judge protection to perform engine run.
8. a test bay TT&C system, is characterized in that, comprise as arbitrary in claim 1 to 7 as described in the stop-working protection system of engine run.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510755664.3A CN105300700A (en) | 2015-11-09 | 2015-11-09 | Engine test parking protection system and test bed measurement and control system with engine test parking protection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510755664.3A CN105300700A (en) | 2015-11-09 | 2015-11-09 | Engine test parking protection system and test bed measurement and control system with engine test parking protection system |
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| CN105300700A true CN105300700A (en) | 2016-02-03 |
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| CN201510755664.3A Pending CN105300700A (en) | 2015-11-09 | 2015-11-09 | Engine test parking protection system and test bed measurement and control system with engine test parking protection system |
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Cited By (3)
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| CN109632002A (en) * | 2018-12-29 | 2019-04-16 | 北京动力机械研究所 | A kind of integrated form test bay TT&C system |
| CN110763938A (en) * | 2019-11-01 | 2020-02-07 | 中车大连机车研究所有限公司 | Intelligent state monitoring type traction control interface module |
| CN110895205A (en) * | 2018-09-12 | 2020-03-20 | 北京振兴计量测试研究所 | On-spot calibration system of test bench flow measurement of aeroengine |
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Application publication date: 20160203 |