CN103641058A - System for measuring and metering oil in tank truck automatically - Google Patents

System for measuring and metering oil in tank truck automatically Download PDF

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Publication number
CN103641058A
CN103641058A CN201310668030.5A CN201310668030A CN103641058A CN 103641058 A CN103641058 A CN 103641058A CN 201310668030 A CN201310668030 A CN 201310668030A CN 103641058 A CN103641058 A CN 103641058A
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CN
China
Prior art keywords
liquid level
data
wireless
mcu
tank car
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Application number
CN201310668030.5A
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Chinese (zh)
Inventor
秦小琼
刘德学
董赟
安乙丁
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兰州理工大学
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Application filed by 兰州理工大学 filed Critical 兰州理工大学
Priority to CN201310668030.5A priority Critical patent/CN103641058A/en
Publication of CN103641058A publication Critical patent/CN103641058A/en

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Abstract

Disclosed is a system for measuring and metering oil in a tank truck automatically. A wireless liquid level feeler lever (4) is connected to a metal shell of the tank truck through an earth clamp; liquid level data, interface data and temperature data measured by a magnetostrictive liquid level sensor (5) and a temperature sensor (6) are transmitted into a microprocessor in the wireless liquid level feeler lever (4) to be subjected to analog-digital conversion and filtering processing; the liquid level data, the interface data and the temperature data are relayed into a wireless network terminal (2) by a wireless network through a wireless router (3) after being subjected to intrinsic parameter modification; a computer system (1) receives the liquid level data and temperature data transmitted by the wireless network terminal (2) and calls a tank truck strapping table, oil density and column correction coefficients and density meter conversion table data to calculate and display the quality of the oil in the tank truck to be measured in real time, wherein the tank truck strapping table, the oil density and column correction coefficients and the density meter conversion table data are stored in the computer system in advance.

Description

The automatic measuring system of tank car oil plant

Technical field

The present invention relates to liquid material automatic measuring system.

Background technology

POL measuring is most important component part in petrochemical enterprise, oil reserve department measurement, oil product enters that the metering, production process in storehouse are controlled, the metering in the determining of material consumption energy consumption, Oil Product Marketing and transportation, is all the key link that directly affects business unit's economic benefit and prestige.

The turnover oil depot transportation of oil reserve unit is mainly to take tank car as main, mails to various places finished oil Subscriber Unit, and handing-over both sides adopt Static Volumetric Method metering.Commonplace with oil filling riser operation when vapour, diesel oil entrucking outbound, after entrucking, by manually surveying, oil product liquid is high, liquid temperature, and then apparent temperature, pseudodensity are surveyed in sampling, then carries out data software calculating and measure single core and the work such as send out.(error in the metering of oil product tank car is divided newly, Baidu library),

This method of tank car oil metering is a kind of national measurement standard standard that meets, and is easy to realize the orthodox method that measurement standard is traced to the source.But exist in metering operation process, manual work link is many, DATA REASONING process complicated, measurement computation process is loaded down with trivial details, make this metering method be difficult to adapt to current informationization, automation universal requirement comprehensively, has also had a strong impact on the operating efficiency of oil reserve unit.

Summary of the invention

the object of the invention is to improve a kind ofthe automatic measuring system of tank car oil plant.

The present invention is the automatic measuring system of tank car oil plant, comprise computer system 1, wireless network terminal 2, wireless router 3, radio liquid level feeler lever 4, wireless network terminal 2 and wireless router, between radio liquid level feeler lever 4, adopt IEEE 802.15.4ZigBee agreement to form the wireless communication pattern of a point-to-multipoint, take off data and control information can complete transmission in moment, liquid level wireless feeler lever 4 is connected on groove tank car metal case by earth clip, the liquid level that magnetostrictive liquid level sensor 5 and temperature sensor 6 record, boundary's bit data and temperature data, the microprocessor of sending in liquid level wireless feeler lever 4 carries out analogue to digital conversion and filtering processing, after inner parameter correction, by wireless network, by wireless router 3 relayings, be delivered in wireless network terminal 2 again, computer system 1 receives liquid level data and the temperature data that wireless network terminal 2 transmits, call the groove tank car loading table that inside prestores, oil density, volume coefficient of correction, density meter conversion table data, calculate in real time and demonstrate the oil plant quality in groove tank car to be measured.

Usefulness of the present invention is: the wireless network terminal 2 in system, wireless router 3, the measuring equipment at oil transferring scene and computer system are coupled together, complete the wireless transmission of take off data and information, the potential safety hazard of having avoided hazardous area wiring to bring, has advantages of safety, reliable, flexible configuration.

Accompanying drawing explanation

Fig. 1 is entire system structural representation, and Fig. 2 is entire system structured flowchart, and Fig. 3 is that liquid level wireless is measured feeler lever Circuits System block diagram.

The specific embodiment

As shown in Figure 1, the present invention is the automatic measuring system of tank car oil plant, comprise computer system 1, wireless network terminal 2, wireless router 3, radio liquid level feeler lever 4, wireless network terminal 2 and wireless router, between radio liquid level feeler lever 4, adopt IEEE 802.15.4ZigBee agreement to form the wireless communication pattern of a point-to-multipoint, take off data and control information can complete transmission in moment, liquid level wireless feeler lever 4 is connected on groove tank car metal case by earth clip, the liquid level that magnetostrictive liquid level sensor 5 and temperature sensor 6 record, boundary's bit data and temperature data, the microprocessor of sending in liquid level wireless feeler lever 4 carries out analogue to digital conversion and filtering processing, after inner parameter correction, by wireless network, by wireless router 3 relayings, be delivered in wireless network terminal 2 again, computer system 1 receives liquid level data and the temperature data that wireless network terminal 2 transmits, call the groove tank car loading table that inside prestores, oil density, volume coefficient of correction, density meter conversion table data, calculate in real time and demonstrate the oil plant quality in groove tank car to be measured.

As shown in Figure 2, during mass metrology work, first radio liquid level feeler lever 4 is passed through to earth clip, be connected on groove tank car metal case.The liquid level that magnetostrictive liquid level sensor 5 and temperature sensor 6 record, boundary's bit data and temperature data, the microprocessor of sending in radio liquid level feeler lever 4 carries out analogue to digital conversion and filtering processing, after inner parameter correction, by ZigBee wireless network, by wireless router 3 relayings, be delivered in wireless network terminal 2 again.Computer system 1 receives liquid level data and the temperature data that wireless network terminal 2 transmits, call the data such as groove tank car loading table that inside prestores, oil density, volume coefficient of correction, density meter conversion table, calculate in real time and demonstrate the oil plant quality in groove tank car to be measured.

Radio liquid level feeler lever 4 is the microprocessor systems that comprise ZigBee wireless module, has the functions such as multi-channel AD4-9 conversion, digital filter, the control of IO mouth, information demonstration, power management, data processing, on-line calibration.Liquid level wireless feeler lever and magnetostriction liquidometer are combined closely, powered battery, Explosion-proof Design.Wireless network terminal 2 is arranged in the masuring room of far-end, by common power, is powered, and adopts non-Explosion-proof Design.ZigBee wireless router is arranged between the two, realizes data relay and route.

as shown in Figure 3,radio liquid level feeler lever 4 is key elements of this measuring system, MCU 4-1, uncovering power-off protective circuit 4-2, supplying cell 4-3 source switch 4-4, touch signal detecting unit 4-5, touch key-press 4-6, RS485 interface circuit 4-7, power line voltage monitoring 4-8, panel leds 4-9, liquid level warning lamp 4-10, ZigBee wireless transmitter module 4-12, consists of.

As shown in Figure 3, during measuring system work, level sensor 5 and temperature sensor 6 are sent to MCU4-1 by liquid level, position, boundary, temperature information by RS485 interface circuit 4-7 string line, through MCU4-1, process and are packaged into specific Frame, send to ZigBee module 4-11.ZigBee module 4-11 also can pass to MCU4-1 by the command frame from computer terminal, after being analyzed, carries out different tasks or carries out different processing by MCU4-1.Touch signal detecting unit 4-5 detects the information on touch key-press 4-6, and different key informations is passed to MCU4-1 and power switch unit 4-4.When power switch unit 4-4 button is touched, touch signal detecting unit 4-5 directly exports control signal, cutting system power supply or open system power supply.The power supply of Circuits System by supplying cell 4-3; through the mu balanced circuit in uncovering power-off protective circuit 4-2; be processed into respectively the 14V voltage for magnetostrictive liquid level sensor 5; the 3.3V voltage that MCU4-1, ZigBee module 4-11 and other circuit unit are used; with the 12V voltage that liquid level warning flashing light 4-10 is used, Qi Ge road voltage monitors by power line voltage the detection that 4-8 realizes voltage.If magnitude of voltage out of reach required value, the A/D that its signal is monitored in 4-8 by power line voltage carries out signal conversion, and sends its signal to MCU4-1, and MCU4-1 pulls indicator lamp 4-9 with the mode of operation of display system by face.For the requirement of explosion proof of dangerous situation, battery system and all circuit units are all arranged in the armored cassette with flame proof grade.Consider user of service likely not according to standard operation use on-the-spot open explosion-proof lid may, customized design uncovering power-off fender guard, the bonnet of uncovering power-off protective circuit 4-2 is rotated several circles, system power supply will be cut off.This device can guarantee that this feeler lever is in the use safety of dangerous situation better.When in tank body, liquid level surpasses warning position, MCU4-1 carries out the warning of liquid level in tank car by liquid level warning flashing light 4-10.

The main interface user of computer system 1 can realize tank car condition monitoring, receives oil, hair oil, metering are checked, user management, oil transferring unit management, transmitting-receiving station management, oil plant code administration, capacity calculation, standard density and the calculating of volume coefficient of correction, inquire about correlation function is set etc.

Tank car monitoring module mainly completes tank car temperature, innage, the isoparametric demonstration in position, boundary.System adopts polling mode to send querying command to individual sensor by timer, and modules is passed tank car state parameter back terminal after receiving querying command, further processes and displays.

Native system is connected with wireless network terminal 2 by serial ports of computers, receives wirelessly tank car status information storage and uses for other module inquiry with " tank car state parameter data bank ".The information such as serial ports of computers parameter, query pattern, sensor number, user profile, the oily unit of receipts (sending out), receipts (sending out) station name, oil plant numbering, gauger are all stored in " user management and parameter arrange data bank ".The corresponding relation of loading table information and tank car and loading table is stored in " loading table data bank ".

Registration warehouse-in to tank car information when receiving (sending out) oil, receives (sending out) manifest position and receipts (sending out) station name and can add by database management unit.When user inserts license number, will automatically from Relational database, inquire about corresponding vehicle and volume table number, further calculate this tank car oil plant quality.

Wireless network terminal 2 in system, wireless router 3, the measuring equipment at oil transferring scene and computer system are coupled together, complete the wireless transmission of take off data and information, the potential safety hazard of having avoided hazardous area wiring to bring, has the advantages such as safety, reliable, flexible configuration.

meter of the present inventionamount system is that each collector and main frame are connected and composed to Distributed Control System, by computer network, with data communication mode, transmits sampled data, forms computer network DAS system.In data transmission procedure, data trap is processed the detected parameters of single truck tanker in time, under the control of upper computer, by data acquisition unit, by network transmission data, can realize the data communication between a plurality of collectors.

the present inventionin order to guarantee safety and the integraty of whole data acquisition system; the data acquisition system of design can realize can keep in server by after data acquisition; server has automatic temporary storage function to data; overcome and gathered the loss of data that the unexpected power-off of transmission causes; image data has been played to protective effect, guaranteed the safe, complete of system data.In data autostore process, can also squeeze into the time, be convenient to the data analysis on backstage.

the present inventionvarious field datas are carried out to stratified concentrating, after digitalisation, enter into < < tank car unit weight measuring software > >, relevant regulations and requirement according to POL depot management, carry out unit weight calculating, result of calculation is carried out multiple picture disply and storage, operating personal can be understood in time liquid level, density, the state of temperature of each truck tanker institute charge of oil product from the chart that shows and data, has realized concentrated supervision and unified management.Historical data base is set up on backstage, adopts dynamically analysis theories immediately, to all data analysis, for supvr provides receipts (sending out) oily quantity.And carry out remote network communication, to higher authorities.

Claims (4)

1. the automatic measuring system of tank car oil plant, comprise computer system (1), wireless network terminal (2), wireless router (3), radio liquid level feeler lever (4), wireless network terminal (2) and wireless router, between radio liquid level feeler lever (4), adopt IEEE 802.15.4 Zigbee protocol to form the wireless communication pattern of a point-to-multipoint, take off data and control information can complete transmission in moment, it is characterized in that liquid level wireless feeler lever (4) is connected on groove tank car metal case by earth clip, the liquid level that magnetostrictive liquid level sensor (5) and temperature sensor (6) record, boundary's bit data and temperature data, the microprocessor of sending in liquid level wireless feeler lever (4) carries out analogue to digital conversion and filtering processing, after inner parameter correction, by wireless network, by wireless router (3) relaying, be delivered in wireless network terminal (2) again, computer system (1) receives liquid level data and the temperature data that wireless network terminal (2) transmits, call the groove tank car loading table that inside prestores, oil density, volume coefficient of correction, density meter conversion table data, calculate in real time and demonstrate the oil plant quality in groove tank car to be measured.
2. the automatic measuring system of tank car oil plant according to claim 1, is characterized in that liquid level wireless measures feeler lever (4) by MCU(4-1), uncovering power-off protective circuit (4-2), supplying cell (4-3) source switch (4-4), touch signal detect (4-5), touch key-press (4-6), RS485 interface circuit (4-7), power line voltage monitoring (4-8), panel leds (4-9), liquid level warning lamp (4-10), ZigBee wireless transmitter module (4-12) forms;
Wherein level sensor (5) and temperature sensor (6) are sent to MCU(4-1 by liquid level, position, boundary, temperature information by RS485 interface circuit (4-7)), through MCU(4-1) process and to be packaged into specific Frame, send to ZigBee module (4-11);
ZigBee module (4-11) also can pass to MCU(4-1 by the command frame from computer terminal), by MCU(4-1) analyze the different task of rear execution or carry out different processing;
Touch detection unit (4-5) detects the information on touch key-press (4-6), and different key informations is passed to MCU(4-1) and power switch unit (4-4);
The power supply of Circuits System by powered battery (4-3), through mu balanced circuit in (4-2), be processed into respectively the 14V voltage for liquidometer (5), MCU(4-1), the 3.3V voltage that ZigBee module (4-11) and other circuit unit are used, with the 12V voltage that liquid level warning flashing light (4-10) is used, Qi Ge road voltage is monitored A/D(4-8 by power line voltage) realize the detection of voltage.
3. the automatic measuring system of tank car oil plant according to claim 1, while it is characterized in that magnitude of voltage out of reach preset value, power line voltage monitoring (4-8) can be changed by A/D signal, send signal to MCU(4-1), MCU(4-1) by face, pull indicator lamp (4-9) with the mode of operation of display system.
4. the automatic measuring system of tank car oil plant according to claim 1, while it is characterized in that liquid level surpasses warning position in tank body, MCU(4-1) can carry out by liquid level warning flashing light (4-10) warning of liquid level in tank car.
CN201310668030.5A 2013-12-11 2013-12-11 System for measuring and metering oil in tank truck automatically CN103641058A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106595809A (en) * 2016-12-27 2017-04-26 上海铁路局科学技术研究所 Non-contact type infrared thermal imaging liquid level online detection method for railway tanker
CN106796752A (en) * 2014-11-14 2017-05-31 欧姆龙株式会社 Measurement apparatus and its control method, managing device and its control method and measuring system
CN109374083A (en) * 2018-10-31 2019-02-22 广州发展集团股份有限公司 The liquid level acquisition methods and device of vertical tank, oil transferring liquid level early warning system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101038201A (en) * 2007-04-24 2007-09-19 无锡虹业自动化工程有限公司 Intelligent measuring and counting system of oil product tank farm
CN201945891U (en) * 2010-12-17 2011-08-24 上海无线电设备研究所 Object level / liquid level monitoring system based on wireless sensor networks
CN202057389U (en) * 2011-04-12 2011-11-30 上海龙珠器械科技有限公司 Digital meter
US20120116695A1 (en) * 2010-11-04 2012-05-10 Kimberley Allan Young Liquid level measuring system and method
CN202485757U (en) * 2012-03-06 2012-10-10 华中科技大学 Automatic metering and oil level monitoring and calibrating system of oil storage tank

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101038201A (en) * 2007-04-24 2007-09-19 无锡虹业自动化工程有限公司 Intelligent measuring and counting system of oil product tank farm
US20120116695A1 (en) * 2010-11-04 2012-05-10 Kimberley Allan Young Liquid level measuring system and method
CN201945891U (en) * 2010-12-17 2011-08-24 上海无线电设备研究所 Object level / liquid level monitoring system based on wireless sensor networks
CN202057389U (en) * 2011-04-12 2011-11-30 上海龙珠器械科技有限公司 Digital meter
CN202485757U (en) * 2012-03-06 2012-10-10 华中科技大学 Automatic metering and oil level monitoring and calibrating system of oil storage tank

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106796752A (en) * 2014-11-14 2017-05-31 欧姆龙株式会社 Measurement apparatus and its control method, managing device and its control method and measuring system
CN106595809A (en) * 2016-12-27 2017-04-26 上海铁路局科学技术研究所 Non-contact type infrared thermal imaging liquid level online detection method for railway tanker
CN109374083A (en) * 2018-10-31 2019-02-22 广州发展集团股份有限公司 The liquid level acquisition methods and device of vertical tank, oil transferring liquid level early warning system
CN109374083B (en) * 2018-10-31 2020-06-16 广州发展集团股份有限公司 Liquid level acquisition method and device for vertical oil tank and early warning system for receiving and transmitting oil level

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Application publication date: 20140319