CN102243496B - Remote oil well management method based on mobile communication network and core processor - Google Patents

Abstract

The invention discloses a remote oil well management method based on a mobile communication network and a core processor. The method relies on an embedded system. The embedded system is based on a global mobile communication network and uses a core processor to collect signals online in real time through smart instruments. , and then the core processor reads the oil quantity data through the serial port and directly sends it to the internal memory RAM for processing; after the oil quantity data is processed by the core processor, corresponding operations are performed in different situations. The method of the present invention utilizes an embedded structure core processor, which has high reliability and does not occupy host resources; adopts a global mobile communication network, transmits data quickly, and has low cost; adopts a simple and reliable method for identifying staff to pull crude oil, and judges The complex logic method of oil volume data information and related processing makes the method of the invention strong in function, high in accuracy, wide in applicability and fast in speed.

Description

Remote Oil Well Management Method Based on Mobile Communication Network and Core Processor

technical field

The invention belongs to the technical field of oil field control and relates to a remote oil well management method based on a mobile communication network and a core processor.

Background technique

With the rapid development of the information industry, the concept of information digitization has been widely accepted in more and more fields, especially the oil and energy industry that is related to the country's economic development. At present, major oil fields use backbone networks for information management, but they rely too much on network signals and require production units to lay networks by themselves. Due to the complexity of geography and landforms, construction difficulties increase and the cost of network laying increases.

Global mobile communication, commonly known as "Global Communication", the global mobile communication system has the characteristics of strong anti-theft copying ability, large network capacity, rich mobile phone number resources, clear calls, strong stability, less susceptible to interference, sensitive information, and fewer call dead spots. The biggest difference between the backbone network is that the backbone network requires the production unit to lay optical fiber and other communication equipment, while the global mobile communication network uses the mobile phone network, which avoids the problems of high development cost and slow effect.

Digital oilfield construction is a complex system engineering, which requires the coordinated development of information technology, petroleum geology, reservoir engineering, enterprise management and other disciplines. Reliable data quality, as well as standardized and intelligent management are the basis for realizing digital oilfield. Among them, reliable data quality involves accurate and reliable data collection, processing and transmission. Standardized and intelligent management involves the centralization, classification, management and application of data, that is, the construction of data centers. Aiming at the concept of data-based oilfield construction and considering the feasibility of practical application, the current methods of reading oil volume data, identifying the identity of the staff and controlling the kowtow machine on the oilfield are: use a static pressure transmitter to measure the weight of crude oil; The personal identity IC card is used to identify the identity of the staff; the relay with a smaller current to control a larger current is selected to control the work of the kowtow machine.

Static gauges work on the principle that pressure is equal to the product of pressure and contact area. Smart meters are usually selected as instruments for measuring the weight of crude oil. The smart instrument can read the weight of crude oil in real time, communicate with other microcomputers, and transmit the collected data.

IC card, also known as integrated circuit card, generally uses radio frequency technology to communicate with IC card reader, so IC card reader is the bridge between IC card and application system.

A relay is an electronic control device, usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current, so it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit.

In view of the high cost of communication network construction in the remote oil well management process of existing oil fields, the automatic gathering and transportation management of crude oil cannot be effectively realized, and the loss of oil volume cannot be detected in time and alarmed, and oil theft incidents often occur, and a degree of automation is urgently needed Advanced remote oil well management equipment and management methods meet the technical requirements of oil fields.

Contents of the invention

The purpose of the present invention is to provide a remote oil well management method based on a mobile communication network and a core processor, effectively realize oil field gathering and transportation management of crude oil, timely discover oil loss and give an alarm, manage crude oil transportation at the same time, and prevent oil theft incidents happened.

The technical solution adopted in the present invention is a remote oil well management method based on a mobile communication network and a core processor, the method relies on an embedded system, the embedded system is based on a global mobile communication network and uses a core processor, and adopts an intelligent The instrument reads the current oil quantity data in the oil tank online in real time, and transmits the oil quantity data to the core processor in the embedded system through the RS485 serial port; the core processor will obtain the oil quantity data and the oil quantity set by the manager Threshold values are compared, and corresponding operations are performed according to different situations, including:

1) When the oil volume increases

If the current oil quantity data exceeds the oil quantity alarm threshold value, the embedded system will send out an alarm and inform the upper computer system;

If the current oil quantity data exceeds the oil quantity over-high shutdown threshold value, the embedded system will not only notify the host computer system but also automatically shut down the kowtow machine connected to the oil tank to make it stop working. Once the current oil quantity is lower than the current oil quantity After the shutdown threshold is too high, and the embedded system time is within the working time period of the kowtow machine set by the administrator, the embedded system will automatically turn on the power switch of the kowtow machine to make it work again;

2) When the oil volume is normally reduced

The embedded system sends instructions to the IC card reader to obtain the status information of the current card reader, judges whether the staff is pulling crude oil, and matches the returned status information with the employee ID data issued by the host computer system. If it matches, it is judged that there is a staff member who is pulling crude oil, and at the same time record the staff number; if it does not match, it is judged that no staff member is pulling crude oil,

If a worker pulls crude oil at this time, the system will record the oil quantity data at the moment before the worker pulls crude oil. Once the worker stops pulling crude oil, the embedded system will calculate the amount of crude oil pulled by the worker, and will The employee's job number, the quantity of crude oil pulled and the time of pulling are sent to the upper computer system, and the upper computer system informs the management personnel through display or SMS;

If there is no staff to pull the crude oil at this time, the system will compare the current oil volume data with the oil volume data at the previous moment, and if it finds a drop, record the oil volume data at the previous moment and compare it In comparison, once the accumulation reaches the set value set by the management personnel, the embedded system will alarm and send a text message to notify the management personnel; on the contrary, if the oil volume has not reached the set value, and the oil volume rises, the previous alarm will be cleared. The oil quantity data is recorded at a moment, and the fluctuation change of the oil quantity data is reacquired. If it rises, it will not be recorded, otherwise it will be recorded.

The beneficial effects of the inventive method are:

1) Through the use of the global mobile communication system and the embedded system based on the core processor, the collection, processing and transmission of oil well site production information are carried out, with low cost, high speed and high reliability.

2) Obtain the crude oil reserve information on the production site through intelligent instruments, consider the maximum oil storage capacity of the oil storage tank itself and the working conditions of the kowtow machine, and based on the processing algorithm of the current oil storage volume and the maximum oil storage volume, it can timely deal with the roof fall of the oil tank emergencies, reducing the production waste of oil resources.

3) By analyzing the decline of crude oil volume, the information reporting mechanism algorithm for two situations is set up, which improves the management system for the staff to pull crude oil, and at the same time can timely alarm the oil stealing phenomenon that is happening on the production site, so that the management Personnel can take corresponding measures in the first time.

4) The management personnel issue commands through the upper computer system to realize remote control of the production status of the oil well. At the same time, the production information can also be reported to the upper computer system according to the requirements of the management personnel, which improves the production efficiency, reduces the labor intensity of the workers, and reduces the cost expenditure.

Description of drawings

Fig. 1 is a schematic block diagram of the hardware structure of the embedded system adopted by the method of the present invention.

In the figure, 1. Core processor, 2. CPLD device, 3. Conversion device 1, 4. Mobile communication network module, 5. IC card reader, 6. Smart instrument, 7. Seven-bit general interface 1, 8. Kowtow Machine control switch relay, 9. Kowtow machine control switch relay status reading, 10. Seven-bit general interface two, 11. Conversion device two.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

With the development of microelectronics, the core processor has been developed rapidly. While the performance is continuously improved, the price is continuously reduced, which makes the embedded information processing technology based on the core processor possible. Gao's remote management oil well production system based on the global mobile communication system provides technical means.

As shown in Figure 1, the structure of the embedded system that the inventive method relies on is, comprises core processor 1, and core processor 1 is connected with CPLD device 2, and CPLD device 2 is connected with two conversion devices (converter device 1) of the same structure 3 is connected with conversion device two 11), wherein conversion device one 3 is connected with mobile communication network module 4 and IC card reader 5 through RS232 interface, and another conversion device two 11 is connected with smart instrument 6 through RS485 interface; CPLD device 2 Connect with kowtow machine control switch relay 8 through a seven-bit general interface 17, CPLD device 2 is also connected with kowtow machine control switch relay state reading 9 through another seven-bit general interface 210, core processor 1 is also connected with alarm device And host computer system connection.

The core processor 1 selects the TMS320DM642 chip as the main control chip of the embedded system, and selects the corresponding power supply chip according to the power supply required by the chip to obtain the voltage of 5V and 3.3V;

In order to realize power-on self-restart and self-loading program, a 4M×8bit Flash is added to the DM642; due to the small internal storage resources of the DM642, two additional 4M×64bit asynchronous memory SDRAMs are added to expand the capacity of the embedded system. ability to store data.

In order to realize the function of programmable control, a CPLD device 2 is connected to the external memory interface of the core processor 1, and the CPLD device 2 is used to realize the expansion of the external address, and the device that realizes the corresponding function is driven by the address expansion, such as parallel data conversion serial data devices.

Because the mobile communication network module 4, the IC card reader 5 and the smart instrument 6 all communicate with the external microcomputer through serial ports, the system is provided with four serial ports, and one of the redundant serial ports is a reserved serial port. On the CPLD device 2, there are 2 identical conversion devices for parallel data conversion serial data ((the conversion device one 3 and the conversion device two 11 are all selected TL16C752B models), and each conversion device controls two serial ports to achieve Describes the setup requirements for embedded system hardware.

Since the embedded system needs to control and obtain the working status of the kowtow machine, and realize the multiplexing function of the data bus read and write operations, the lower 8-bit data bus is drawn from the DM642 as a switch for transmission control and a relay for controlling the kowtow machine. Quantity; Logical judgment is carried out inside the CPLD device to realize the function multiplexing of the data bus.

Since the 8-bit data line and two conversion devices are connected to the CPLD device 2, in order to allow the core processor 1 to control, the lower 8-bit address bus is drawn from the core processor 1, and the eight address lines pass through the CPLD After the logic function is added to the device 2, address mapping is performed on each device and data line, so that each module connected to the CPLD device 2 has an address mapping to the core processor 1.

In order to allow the CPLD device 2 to communicate with the core processor 1 (DM642), it is necessary to connect the control pins of the CPLD device 2 to some control pins of the core processor 1, through the general-purpose I/O port, The DSP control pin and the CPLD control pin realize the normal operation of the CPLD device 2 under the control of the core processor 1 .

The core processor 1 selects the DM642SmartI module of Shanghai Shike Electronic Technology Co., Ltd., and its CPU is the DM642 chip produced by American TI Company. This module has functions such as embedded computing, machine vision processing and industrial control.

CPLD device 2 selects the EPM7128ST100-10 model, which belongs to the CPLD of Altera's MAX7000 series. This module has digital logic functions, and users can realize the required logic functions according to their own setting purposes.

The mobile communication network module 4 is the EM310 module of Huawei, which has functions such as GPRS and mobile communication, telematics processing and other mobile data transmission.

IC card reader 5 is selected from Dongguan Tongxin Intelligent Technology Co., Ltd. TX522 series card reader. The card reader has the characteristics of easy to use, high reliability, multiple interfaces, and small size. It is a non-contact IC card reading and identification instrument.

Smart meter 6 uses the smart current/voltage meter of Fujian Shangrui Precision Instrument Co., Ltd., which is suitable for the display control of various physical quantity detection signals such as temperature, humidity, pressure, liquid level, flow, etc., and can detect multiple measurement signals in a circuit. And it can perform high-precision linear correction on various nonlinear input signals.

In view of the above-mentioned structure, the embedded system that the method program of the present invention operates has the following functions:

1) The system can power on and reset itself, load itself, and run programs; 2) The system hardware supports the processing of massive data; 3) The system hardware can communicate with the GSM module; 4) The system hardware can communicate with the IC identifier; 5) The system hardware can communicate with the smart instrument; 6) The system hardware can control the working state of the kowtow machine, that is, complete control of the switching value of the relay control switch relay; 7) The system hardware can return the working state of the kowtow machine, That is to obtain the switching value of the kowtow machine control switch relay.

The embedded system that the inventive method uses is through power-on self-inspection program, after initialization setting program, carries out fuel quantity data collection and processing program, comprises the following content: Copy, so that the program can be automatically executed after power on. 2) The initialization setting program is responsible for completing the registers and hardware settings that need to be configured for system work, including system power supply, program memory interface, data memory interface, Ethernet interface and serial port. After the initialization is completed, the hardware part of the system can work normally. 3) The fuel quantity data acquisition and processing procedure is: first power on and reset, complete the initialization operation, oil quantity detection and judgment, and send short messages to inform the manager of the algorithm introduction, and start A/D to work continuously; Take the data command, so that the smart meter continuously transmits the fuel quantity data to the DSP through the serial port, and the DSP judges according to the previous fuel quantity data and the current fuel quantity data, and stores the change result, so as to ensure the accuracy of the recorded information When the oil quantity changes to a certain set value, it will execute the corresponding operation; DSP sends the judgment result and the corresponding operation to the management system through SMS; at this time, the management personnel can know the real-time situation of the production site through the management system circumstances and take appropriate measures.

In the remote oil well management method of the present invention, the smart meter 6 is used to read the current oil volume data, and the embedded structure based on the core processor 1 is used to read the current oil volume data respectively, to determine the threshold of the oil volume, and to identify the staff pull Take the situation of crude oil, judge the data situation of the adjacent oil quantity, deal with the data decline of crude oil, process the instructions issued by the host computer system, and use the relay to complete the automatic control switch function of the kowtow machine. The specific information collection and processing process includes :

1) Reading of oil quantity data

First, initialize the smart meter 6 through the core processor 1. These settings include the pressure measurement range of the smart meter 6, the address allocation of the meter reading object, and the meter sends data through an interrupt, and then connects to the system through the general input port. The machine directly stores the crude oil extracted from the ground into the oil tank, and the smart instrument 6 judges the amount of oil by reading the pressure of the crude oil in the oil tank, so as to obtain the amount of crude oil extracted from the oil well, and at the same time check the crude oil and crude oil The most direct result of losses is the amount of oil in the tank. The smart meter 6 transmits the oil quantity data to the embedded system through the RS485 serial port, and performs specific analysis and processing of the oil quantity data.

2) Judgment on the fuel volume threshold

Since the amount of oil stored in the oil tank has an upper limit regulation, once the oil amount exceeds the upper limit, crude oil will overflow the oil tank, that is, the phenomenon of "roof fall" will occur. The management personnel judge the maximum storage capacity of the oil tank and set two thresholds at the same time. The first threshold means that the crude oil has exceeded the warning line, but has not reached the critical value of the "top fall" phenomenon. ; The meaning of the second threshold value is that the crude oil has reached the storage value where the phenomenon of "top fall" occurs. The fuel quantity data sent to the core processor 1 by the smart meter 6 is used for real-time judgment. If the fuel quantity data exceeds the first threshold value (the oil quantity is too high alarm threshold value), the embedded system will generate the fuel quantity has exceeded The alarm text message of the warning line is reported to the upper computer system through the mobile communication network module 4 (Huawei EM310 module), and the management personnel are notified through the manual interface display or the SMS prompt, and the management personnel take specific measures according to the specific situation. You can also choose the specific way to obtain the alarm message. When the received oil quantity data exceeds the second threshold value (the oil quantity is too high shutdown threshold value), the embedded system will not only generate an alarm message that the current oil quantity has exceeded the warning line and report it to the upper computer system, but also Automatically disconnect the working power of the kowtow machine connected to the seven-bit universal interface, so that the kowtow machine stops working and avoids the phenomenon of roof fall. Until the system time is in the working time period of the kowtow machine, and when the oil volume in the oil tank is lower than the second threshold value, the working power of the kowtow machine that is automatically closed will automatically turn on and start working again.

3) Identification of the crude oil pulled by the staff

Use the IC card for identification, the system sends an instruction to read the current status of the IC card reader 5 to the TX522 series IC card reader 5 through the RS232 serial port, so as to obtain the status information of the current IC card reader 5; If the data contained in the status information matches the employee’s ID data, it is judged that there is a worker who is pulling crude oil, and the worker’s ID is recorded at the same time; if it does not match , it is judged that there is no staff pulling crude oil.

4) Judgment on the decline of adjacent oil volume

If a worker pulls crude oil at this time, the system will record the oil quantity data at the moment before the worker pulls crude oil. Once the worker stops pulling crude oil, the embedded system will calculate the amount of crude oil pulled by the worker, and will The employee's job number, the quantity of crude oil pulled and the time of pulling are sent to the host computer system, and the host computer system informs the management personnel through display or SMS.

If there is no staff to pull the crude oil at this time, the embedded system will compare the current oil volume data with the oil volume data at the previous moment, and if it finds a drop, record the oil volume data at that time for the next step of processing, if If there is no drop, the fuel volume data at that moment will not be recorded. In this process, the core processor reads the data from the smart meter by sending instructions.

5) Handling of the illegal decline of crude oil

Analyze the oil quantity data recorded at the previous moment and the subsequent oil quantity data. If it is judged that the oil quantity continues to decline, keep the oil quantity data recorded at the previous moment and continue to analyze it with the subsequent oil quantity data. After the set value is set by the management personnel, the embedded system will alarm and send a text message to notify the management personnel; on the contrary, if the oil volume has not reached the set value and the oil volume rises, the oil volume data recorded at the previous moment will be cleared. And reacquire the fluctuation of oil volume data. If it rises, it will not be recorded, otherwise it will be recorded.

6) Processing of instructions issued by the host computer system

For the instructions issued by the host computer system, perform corresponding operations according to the different meanings of the commands. The meanings of the commands include:

a. Kowtow machine working time setting: the manager sets the working time of the kowtow machine so that it runs within the set time period;

b. Oil volume monitoring: When managers need to obtain the oil volume data stored in the oil tank, they only need to send the oil volume monitoring command to quickly obtain the data;

c. IC card management: when the staff pulls crude oil, the manager needs to send an IC card management command to the system, which includes the employee ID of the worker who pulls the crude oil;

d. Set the message return time: After the manager sets the message return time and sends it to the embedded system, the embedded system will send the oil volume data in the oil tank at this moment after the system time reaches the return time every day ;

e. Set the terminal system initialization: This command includes the alarm threshold value for high oil volume, the shutdown threshold value for excessive oil volume, the system time correction value and the number of kowtow machines; the alarm threshold value and oil volume for high oil volume The over-high shutdown threshold is to prevent the oil tank from "roof fall", the system time correction value is to correct the system time, and the number of kowtow machines is to control the normal operation of multiple kowtow machines at the same time.

Claims (2)

1. A remote oil well management method based on a mobile communication network and a core processor, characterized in that the method relies on an embedded system, and the embedded system is based on a global mobile communication network and utilizes a core processor (1), adopts an intelligent The instrument (6) reads the oil quantity data in the current oil tank online in real time, and transmits the oil quantity data to the core processor (1) in the embedded system through the RS485 serial port; the structure of the embedded system is, Including the core processor (1), the core processor (1) is connected to the CPLD device (2), and the CPLD device (2) is connected to the conversion device 1 (3) and the conversion device 2 (11) respectively, and the conversion device 1 (3) Connect with the mobile communication network module (4) and IC card reader (5) through the RS232 interface, and connect the conversion device 2 (11) with the smart instrument (6) through the RS485 interface; Interface 1 (7) is connected to kowtow machine control switch relay (8), CPLD device (2) is connected to kowtow machine control switch relay status reading (9) through seven-bit general interface 2 (10), core processor (1) It is also connected with the alarm device and the upper computer system; the core processor (1) compares the obtained oil quantity data with the oil quantity threshold value set by the management personnel, and performs corresponding operations according to different situations, including: 1) When the oil volume increases If the current oil quantity data exceeds the oil quantity alarm threshold value, the embedded system will send out an alarm and inform the upper computer system; If the current oil quantity data exceeds the oil quantity over-high shutdown threshold value, the embedded system will not only notify the host computer system but also automatically shut down the kowtow machine connected to the oil tank to make it stop working. Once the current oil quantity is lower than the current oil quantity After the shutdown threshold is too high, and the embedded system time is within the working time period of the kowtow machine set by the administrator, the embedded system will automatically turn on the power switch of the kowtow machine to make it work again; 2) When the oil volume is normally reduced The embedded system sends instructions to the IC card reader (5) to obtain the current status information of the card reader, judges whether the staff is pulling crude oil, and compares the returned status information with the employee ID data issued by the host computer system Make a match, if it matches, it is judged that there is a staff member who is pulling crude oil, and record the staff number at the same time; if it does not match, it is judged that no staff member is pulling crude oil, If a worker pulls crude oil at this time, the system will record the oil quantity data at the moment before the worker pulls crude oil. Once the worker stops pulling crude oil, the embedded system will calculate the amount of crude oil pulled by the worker, and will The employee's job number, the quantity of crude oil pulled and the time of pulling are sent to the upper computer system, and the upper computer system informs the management personnel through display or SMS; If there is no staff to pull the crude oil at this time, the system will compare the current oil volume data with the oil volume data at the previous moment, and if it finds a drop, record the oil volume data at the previous moment and compare it In comparison, once the accumulation reaches the set value set by the management personnel, the embedded system will alarm and send a text message to notify the management personnel; on the contrary, if the oil volume has not reached the set value, and the oil volume rises, the previous alarm will be cleared. The oil quantity data is recorded at a moment, and the fluctuation change of the oil quantity data is reacquired. If it rises, it will not be recorded, otherwise it will be recorded. 2. The remote oil well management method according to claim 1, wherein the embedded system processes the instructions issued by the host computer system, including the following aspects: a. Kowtow machine working time setting: the manager sets the working time of the kowtow machine so that it runs within the set time period; b. Oil volume monitoring: When managers need to obtain the oil volume data stored in the oil tank, they only need to send the oil volume monitoring command to quickly obtain the data; c. IC card management: when the staff pulls crude oil, the manager needs to send an IC card management command to the system, which includes the employee ID of the worker who pulls the crude oil; d. Set the message return time: After the manager sets the message return time and sends it to the embedded system, the embedded system will send the oil volume data in the oil tank at this moment after the system time reaches the return time every day ; e. Set terminal system initialization: This command includes the alarm threshold value for excessive oil volume, the shutdown threshold value for excessive oil volume, the system time correction value and the number of kowtow machines.

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