CN104678874A - Blowing type remote liquid level measurement system - Google Patents
Blowing type remote liquid level measurement system Download PDFInfo
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- CN104678874A CN104678874A CN201410742010.2A CN201410742010A CN104678874A CN 104678874 A CN104678874 A CN 104678874A CN 201410742010 A CN201410742010 A CN 201410742010A CN 104678874 A CN104678874 A CN 104678874A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25268—PLD programmable logic device
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing And Monitoring For Control Systems (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a blowing type remote liquid level measurement system, which comprises a central control console part and a measurement and control box part, the central control console part comprises a power supply device, a HUB switch, a comprehensive alarm board, a PLC (programmable logic controller), an industrial personal computer and a liquid crystal display, the measurement and control box part comprises an ME-PLC, a HUB switch, a touch screen, terminals and a pneumatic controller, the terminals are respectively connected with the ME-PLC, the HUB switch and the touch screen, the comprehensive alarm board is provided with a silencing button switch, an OK button switch, a light testing button switch, a comprehensive alarm indicator light, an ordinary alarm indicator light and an acoustic alarm, and the ME-PLC is provided with multiple channels of digital signal acquisition and processing function interfaces, digital output interfaces, 4mA to 20mA signal acquisition and processing function interfaces and Pt100 signal acquisition and processing function interfaces. The invention integrates the alarm system into the remote measurement system, cost is reduced, the workload of maintenance is decreased, scalability and programmability are high, and the stability of the system is enhanced.
Description
Technical field
The present invention relates to a kind of liquid level measuring system, specifically a kind of blowing type liquid level telemetry system.
Background technology
At present, the remote surveying of liquid level system of domestic boats and ships is all adopt autonomous system design proposal, the independent remote surveying of liquid level system be namely made up of liquid level sensor, signal gathering unit, signal processing unit, display etc. substantially.Along with the expansion of Marine Automation System function, now a lot of engine room monitoring warning automated system all has the function of signals collecting, signal transacting and display, both occur that function is overlapping, the situation of Equipments Setting waste, thus add the use cost of equipment, and cause the waste of device resource.
Summary of the invention
The object of the present invention is to provide a kind of dilatancy and the strong blowing type liquid level telemetry system of editability, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of blowing type liquid level telemetry system, comprise central control desk part and observing and controlling case part, described central control desk part comprises supply unit, HUB switch, integrated alarm plate, 1PLC Programmable Logic Controller, industrial computer and liquid crystal display, described observing and controlling case part comprises ME-PLC Programmable Logic Controller, 1HUB switch, touch-screen, connection terminal and air control unit, the input end of described supply unit is connected to 220V voltage signal and 24V voltage signal, the 220V voltage output end of supply unit connects connection terminal respectively, the VIN port of HUB switch and the VIN port of liquid crystal display, the 24V voltage output end of supply unit connects connection terminal respectively, the VIN port of integrated alarm plate, the VIN port of 1PLC Programmable Logic Controller and the VIN port of industrial computer, the LAN3 port of 1HUB switch connects the LAN2 port of HUB switch, the LAN2 port of 1HUB switch connects the LAN1 port of industrial computer, the LAN1 port of 1HUB switch connects the LAN1 port of 1PLC Programmable Logic Controller, described integrated alarm plate connects 1PLC Programmable Logic Controller by internal wiring, the VGA port of the VGA port connecting fluid crystal display of industrial computer, the USB port of industrial computer is connected with keyboard and mouse, connection terminal connects ME-PLC Programmable Logic Controller respectively, 1HUB switch and touch-screen, the LAN1 port of 1HUB switch connects the LAN port of ME-PLC Programmable Logic Controller, the LAN3 of 1HUB switch holds pin to connect the LAN1 port of touch-screen, connection terminal is also connected with power light and rotary switch.
As the further scheme of the present invention: described integrated alarm plate is provided with noise elimination pushbutton switch, ACK button switch, examination lamp button switch, integrated alarm pilot lamp, common alarm lamp and sound alarm subsystem, described ME-PLC Programmable Logic Controller has multi-way switching values signal acquisition process functional interface, output switch parameter interface, 4 ~ 20mA signal acquisition process functional interface and Pt100 signal acquisition process functional interface, state in observing and controlling case partial pneumatic control device, compressed air tank connects pressure regulator valve 1PK and hand valve 11ZF respectively, the hand valve 11ZF other end connects Measurement preprocessing device respectively and purges pretreatment unit, Measurement preprocessing device is integrally connected gasifying device through direct-acting type two-position three-way solenoid valve 1FA, described integrated apparatus comprises eight passages, preposition needle-valve is included in each passage, throttling valve, spinner-type flowmeter, current regulator, safety guard, pressure unit, described current regulator, pressure unit is all connected fuel oil tank with safety guard, described purging pretreatment unit enters one by two and goes out solenoid valve connection fuel oil tank.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention has outside input service power supply power-fail warning function, there is outside input discrete signal interfacility link burn out detection warning function, have and external unit RS422/RS485 signal and communication connecting line break detection alarm function, there is the function that all working power supply does not affect current control state in two priority classes process, there is the function of carrying out data serial communication with voyage data recorder, record the related data of system current operating conditions to be sent VDR and preserve, have and be no less than the passive output interface of two-way integrated alarm, there is system AC220V general supply, the interface of system DC24V general supply miniature circuit breaker access, acoustic alarm sustained, the sound intensity is not less than 85db, there is alarm history record preserve and query function, there is Realtime Alerts print record functional interface, can prevent liquid from pouring in down a chimney to observing and controlling case by sounding pipe, alleviate maintenance workload, dilatancy, editability is strong, add system stability.
Accompanying drawing explanation
Fig. 1 is Principle of Electrical System figure of the present invention.
Fig. 2 is observing and controlling case part electric system schematic diagram in the present invention.
Fig. 3 is observing and controlling case part schematic diagram of gas circuit in the present invention.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1-3, a kind of blowing type liquid level telemetry system, comprise central control desk part and observing and controlling case part, described central control desk part comprises supply unit, HUB switch, integrated alarm plate, 1PLC Programmable Logic Controller, industrial computer and liquid crystal display, described observing and controlling case part comprises ME-PLC Programmable Logic Controller, 1HUB switch, touch-screen, connection terminal and air control unit, the input end of described supply unit is connected to 220V voltage signal and 24V voltage signal, the 220V voltage output end of supply unit connects connection terminal respectively, the VIN port of HUB switch and the VIN port of liquid crystal display, the 24V voltage output end of supply unit connects connection terminal respectively, the VIN port of integrated alarm plate, the VIN port of 1PLC Programmable Logic Controller and the VIN port of industrial computer, the LAN3 port of 1HUB switch connects the LAN2 port of HUB switch, the LAN2 port of 1HUB switch connects the LAN1 port of industrial computer, the LAN1 port of 1HUB switch connects the LAN1 port of 1PLC Programmable Logic Controller, described integrated alarm plate connects 1PLC Programmable Logic Controller by internal wiring, the VGA port of the VGA port connecting fluid crystal display of industrial computer, the USB port of industrial computer is connected with keyboard and mouse, connection terminal connects ME-PLC Programmable Logic Controller respectively, 1HUB switch and touch-screen, the LAN1 port of 1HUB switch connects the LAN port of ME-PLC Programmable Logic Controller, the LAN3 of 1HUB switch holds pin to connect the LAN1 port of touch-screen, connection terminal is also connected with power light and rotary switch.
Described 1PLC Programmable Logic Controller gathers the work condition state of supply unit, data after the various working condition signals gathered are carried out respective handling send to industrial computer and make by it instruction of reporting to the police accordingly, 1PLC Programmable Logic Controller has multichannel RS485 communication interface simultaneously, exchanges data can be carried out with third party device easily by these communication interfaces, industrial computer receives the current observing and controlling status data of observing and controlling case part by HUB switch, the various working condition signals received are demarcated, 1PLC Programmable Logic Controller and each point of aobvious device is distributed to targetedly to carry out corresponding numerical value display and sound and light alarm instruction after logic and other process.
The important measuring point pressed according to visual plant that described integrated alarm plate is reported to the police carries out arranging, integrated alarm plate is provided with noise elimination pushbutton switch, ACK button switch, examination lamp button switch, integrated alarm pilot lamp, common alarm lamp and sound alarm subsystem, its intensity of phonation of described sound alarm subsystem is greater than 85db, the acoustic alarm instruction except current sound alarm subsystem sends is only needed during crawl noise elimination pushbutton switch, after crawl ACK button switch, current integrated alarm pilot lamp become zero diopter instruction or extinguish, eliminate the acoustic alarm instruction that current sound alarm subsystem sends, warning animation on configuration software in computer is confirmed simultaneously, all pilot lamp zero diopter instructions on crawl examination lamp button switch rear panel, and sound-producing device should go out acoustic alarm instruction, described integrated alarm lamp carries out integrated alarm, integrated alarm is the logical OR of All Alerts measuring point in the present invention is current measuring point generation warning in the present invention, the new warning produced of integrated alarm pilot lamp flicker instruction, the instruction of integrated alarm lamp zero diopter loads through alarming determining function, the source of trouble of warning is caused not cancel, integrated alarm pilot lamp has repetition of alarms function, repetition of alarms is reported to the police if the warning measuring point of No. Nth, current system produces and cause the source of trouble of warning not cancel after alarming determining function loads, after have again the warning measuring point of No. N+n produce report to the police then integrated alarm pilot lamp recover flicker instruction, sound alarm subsystem sends acoustic alarm instruction.
Described supply unit is provided with uninterrupted power source UPS, input power AC220V and DC24V is transformed into DC24V general supply by supply unit after treatment, two-way input power arbitrary road power loss, the running status that during another road power supply normal power supply, influential system is not current, system power supply device acquiescence AC220V is priority working power, when after AC220V dead electricity again electric time, supply unit will cut off the current supply circuit of DC24V input power automatically, under system automatically switches to AC220V powered operation state, and this handoff procedure is seamless, in handoff procedure and the running status that after finishing switching, influential system is not current.
In described observing and controlling case partial pneumatic control device, compressed air tank connects pressure regulator valve 1PK and hand valve 11ZF respectively, hand valve 11ZF convenient for maintaining detects, the hand valve 11ZF other end connects Measurement preprocessing device respectively and purges pretreatment unit, pressurized air in measuring process filters by Measurement preprocessing device, pressure regulation and degreasing process, in pressurized air after process, impure particle is less than 5 μm, filtering accuracy is 0.3 μm, secondary side oil mist concentration is less than 1.0mg/m3, compressed air pressure controls between 0.25 ~ 0.30MPa, purge pretreatment unit and the pressurized air in purge is carried out filtration and pressure regulation process, in pressurized air after process, impure particle is less than 5 μm, output pressure is less than 0.30MPa, Measurement preprocessing device is integrally connected gasifying device through direct-acting type two-position three-way solenoid valve 1FA, described integrated apparatus comprises eight passages, preposition needle-valve is included in each passage, throttling valve, spinner-type flowmeter, current regulator, safety guard, pressure unit, described current regulator, pressure unit is all connected fuel oil tank with safety guard, described purging pretreatment unit enters one by two and goes out solenoid valve connection fuel oil tank.
Described ME-PLC Programmable Logic Controller has multi-way switching values signal acquisition process functional interface, output switch parameter interface, 4 ~ 20mA signal acquisition process functional interface and Pt100 signal acquisition process functional interface, on-off model acquisition process functional interface gathers measurement/purging on off state and other on-off model in each air blowing loop, measurement/the purge solenoid valve in each air blowing loop of output switch parameter interface driver, 4 ~ 20mA signal acquisition process functional interface gathers the output current of the pressure unit in each air blowing loop, to determine the liquid level of current measurand in this loop, there is burn out detection simultaneously, the function of reporting to the police, Pt100 signal acquisition process functional interface meets the requirement of three-wire system thermal resistance measurement interface, there is the function of burn out detection, warning simultaneously, the duty of the described liquid level value of each measuring point of touch screen display, the measurement/scavenging in each air blowing loop and the overload alarm state of each liquid level measuring point, it is effective that rear expression input power lighted by described power light, described 1HUB switch adopts industrial grade switch, and 1HUB exchange interface meets the requirement of non-webmaster type 10/100M, complete/half-duplex, MDI/MDI-X self-adaptation, RJ45.
Described preposition needle-valve plays the effect turning off or open this road gas circuit, throttle valve adjustment outputs to blow measures compressed-air actuated flow in pipeline, the automatic regulation output of current regulator measures compressed-air actuated flow in pipeline to air blowing, when the liquid level of fuel oil tank is changed in measurable range, blowing, it is constant to measure compressed-air actuated stability of flow in pipeline, compressed-air actuated flow in pipeline is measured in the current air blowing of spinner-type flowmeter instruction, it is a kind of volumetric displacement meter, compressed-air actuated flow in current airs blowing measurement pipeline can be set by regulating throttling valve the flow reading observed on spinner-type flowmeter, for the liquid level of measurement range in 0 ~ 10m scope, compressed air require is arranged between 25NL/h ~ 40NL/h, safety guard carries out load overload protection, when air blowing measuring tube route is in other reasons blocking or load overload, the pressure measured in pipeline of blowing will raise gradually, until will pressure unit be damaged when reaching the limit tolerance of pressure unit, integrated apparatus arranges safety guard in each passage, air blowing automatically can be measured unnecessary gas in pipeline at any time and be discharged to air by safety guard in measuring process, pressure unit carries out pressure sensing, become the parts sent, pressure unit converts the gas pressure value measured in pipeline of blowing to 4 ~ 20mA electric current, the ME-PLC Programmable Logic Controller that this electric current delivers to observing and controlling case part carries out detecting and delivers to touch-screen display after changing, these measurement data be sent to industrial computer simultaneously and show on liquid collecting crystal display.
The present invention is except monitoring the various discrete working condition signal connecting 1PLC Programmable Logic Controller, also disconnection monitoring is carried out to the analog quantity line connecting these discrete working condition signals, disconnection monitoring is carried out to the line of ethernet physical layer, disconnection monitoring is carried out to the communication connection carrying out RS422/RS485 communication via 1PLC Programmable Logic Controller and other equipment.
The present invention has outside input service power supply power-fail warning function, there is outside input discrete signal interfacility link burn out detection warning function, have and external unit RS422/RS485 signal and communication connecting line break detection alarm function, there is the function that all working power supply does not affect current control state in two priority classes process, there is the function of carrying out data serial communication with voyage data recorder, record the related data of system current operating conditions to be sent VDR and preserve, have and be no less than the passive output interface of two-way integrated alarm, there is system AC220V general supply, the interface of system DC24V general supply miniature circuit breaker access, acoustic alarm sustained, the sound intensity is not less than 85db, there is alarm history record preserve and query function, there is Realtime Alerts print record functional interface, can prevent liquid from pouring in down a chimney to observing and controlling case by sounding pipe, alleviate maintenance workload, dilatancy, editability is strong, add system stability.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (2)
1. a blowing type liquid level telemetry system, comprise central control desk part and observing and controlling case part, it is characterized in that, described central control desk part comprises supply unit, HUB switch, integrated alarm plate, 1PLC Programmable Logic Controller, industrial computer and liquid crystal display, described observing and controlling case part comprises ME-PLC Programmable Logic Controller, 1HUB switch, touch-screen, connection terminal and air control unit, the input end of described supply unit is connected to 220V voltage signal and 24V voltage signal, the 220V voltage output end of supply unit connects connection terminal respectively, the VIN port of HUB switch and the VIN port of liquid crystal display, the 24V voltage output end of supply unit connects connection terminal respectively, the VIN port of integrated alarm plate, the VIN port of 1PLC Programmable Logic Controller and the VIN port of industrial computer, the LAN3 port of 1HUB switch connects the LAN2 port of HUB switch, the LAN2 port of 1HUB switch connects the LAN1 port of industrial computer, the LAN1 port of 1HUB switch connects the LAN1 port of 1PLC Programmable Logic Controller, described integrated alarm plate connects 1PLC Programmable Logic Controller by internal wiring, the VGA port of the VGA port connecting fluid crystal display of industrial computer, the USB port of industrial computer is connected with keyboard and mouse, connection terminal connects ME-PLC Programmable Logic Controller respectively, 1HUB switch and touch-screen, the LAN1 port of 1HUB switch connects the LAN port of ME-PLC Programmable Logic Controller, the LAN3 of 1HUB switch holds pin to connect the LAN1 port of touch-screen, connection terminal is also connected with power light and rotary switch.
2. blowing type liquid level telemetry system according to claim 1, is characterized in that, described integrated alarm plate is provided with noise elimination pushbutton switch, ACK button switch, examination lamp button switch, integrated alarm pilot lamp, common alarm lamp and sound alarm subsystem, described ME-PLC Programmable Logic Controller has multi-way switching values signal acquisition process functional interface, output switch parameter interface, 4 ~ 20mA signal acquisition process functional interface and Pt100 signal acquisition process functional interface, in described observing and controlling case partial pneumatic control device, compressed air tank connects pressure regulator valve 1PK and hand valve 11ZF respectively, the hand valve 11ZF other end connects Measurement preprocessing device respectively and purges pretreatment unit, Measurement preprocessing device is integrally connected gasifying device through direct-acting type two-position three-way solenoid valve 1FA, described integrated apparatus comprises eight passages, preposition needle-valve is included in each passage, throttling valve, spinner-type flowmeter, current regulator, safety guard, pressure unit, described current regulator, pressure unit is all connected fuel oil tank with safety guard, described purging pretreatment unit enters one by two and goes out solenoid valve connection fuel oil tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410742010.2A CN104678874B (en) | 2014-12-09 | 2014-12-09 | A kind of blowing type liquid level telemetry system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410742010.2A CN104678874B (en) | 2014-12-09 | 2014-12-09 | A kind of blowing type liquid level telemetry system |
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| CN104678874A true CN104678874A (en) | 2015-06-03 |
| CN104678874B CN104678874B (en) | 2017-11-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706070A (en) * | 2017-03-01 | 2017-05-24 | 合肥倍豪海洋装备技术有限公司 | Blowing-type ship liquid level measurement system capable of performing dynamic pressure output |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478707A (en) * | 2002-08-29 | 2004-03-03 | 罗放明 | Fully enclosed automatic material flow purchasing and storaging system and controlling |
| CN2754075Y (en) * | 2004-10-15 | 2006-01-25 | 杜虎荣 | Three valve set for blowing |
| WO2006078047A1 (en) * | 2005-01-18 | 2006-07-27 | Toyota Jidosha Kabushiki Kaisha | Liquid fuel consumption device |
| CN101369152A (en) * | 2008-10-17 | 2009-02-18 | 中国安全生产科学研究院 | Safety monitoring early warning and safety management system and method for oil gas extracting, gathering and transporting operation |
| CN201352139Y (en) * | 2008-12-25 | 2009-11-25 | 中国北车集团大连机车车辆有限公司 | Blowing type liquid level automatic display device |
| CN103336515A (en) * | 2013-07-03 | 2013-10-02 | 中船重工远舟（北京）科技有限公司 | Ship cabin monitoring alarming system |
| CN203479326U (en) * | 2013-08-21 | 2014-03-12 | 南通明德重工有限公司 | Cabin liquid level remote measuring system |
| CN103970064A (en) * | 2014-05-14 | 2014-08-06 | 南通永创航海机械有限公司 | Valve remote control and liquid level remote metering system |
| CN204515461U (en) * | 2014-12-09 | 2015-07-29 | 上海三进科技发展有限公司 | A kind of blowing type liquid level telemetry system |
-
2014
- 2014-12-09 CN CN201410742010.2A patent/CN104678874B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478707A (en) * | 2002-08-29 | 2004-03-03 | 罗放明 | Fully enclosed automatic material flow purchasing and storaging system and controlling |
| CN2754075Y (en) * | 2004-10-15 | 2006-01-25 | 杜虎荣 | Three valve set for blowing |
| WO2006078047A1 (en) * | 2005-01-18 | 2006-07-27 | Toyota Jidosha Kabushiki Kaisha | Liquid fuel consumption device |
| CN101369152A (en) * | 2008-10-17 | 2009-02-18 | 中国安全生产科学研究院 | Safety monitoring early warning and safety management system and method for oil gas extracting, gathering and transporting operation |
| CN201352139Y (en) * | 2008-12-25 | 2009-11-25 | 中国北车集团大连机车车辆有限公司 | Blowing type liquid level automatic display device |
| CN103336515A (en) * | 2013-07-03 | 2013-10-02 | 中船重工远舟（北京）科技有限公司 | Ship cabin monitoring alarming system |
| CN203479326U (en) * | 2013-08-21 | 2014-03-12 | 南通明德重工有限公司 | Cabin liquid level remote measuring system |
| CN103970064A (en) * | 2014-05-14 | 2014-08-06 | 南通永创航海机械有限公司 | Valve remote control and liquid level remote metering system |
| CN204515461U (en) * | 2014-12-09 | 2015-07-29 | 上海三进科技发展有限公司 | A kind of blowing type liquid level telemetry system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706070A (en) * | 2017-03-01 | 2017-05-24 | 合肥倍豪海洋装备技术有限公司 | Blowing-type ship liquid level measurement system capable of performing dynamic pressure output |
| CN106706070B (en) * | 2017-03-01 | 2019-04-30 | 合肥倍豪海洋装备技术有限公司 | A kind of air blowing type ship liquid level measuring system of dynamic pressure output |
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| CN104678874B (en) | 2017-11-07 |
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