CN205808615U - A kind of time opening memory-type pressure table - Google Patents

Abstract

The utility model discloses a kind of time opening memory-type pressure table, including main control chip, and be connected with main control chip respectively baroceptor, temperature sensor, described main control chip is provided with data memory module, wirelessly transmitting data command module, instrument man-machine interaction interface and interface convertor；Described main control chip connects power module.The design can be according to different geologic conditions, by the computer on ground to manometric operation interval, sampling interval and time are configured, then Pressure gauge is put into the pressure and temperature under real-time automatic collecting and storage place under oil well, after testing, Pressure gauge is taken ground, by serial ports, the data of storage are passed to computer, then data are played back, process and analyze.Its circuit is simple, and good stability is the most powerful, with low cost.

Description

A kind of time opening memory-type pressure table

Technical field

This utility model oilfield exploitation reservoir temperature stress test instrument, is specifically related to a kind of time opening memory-type pressure Power table.

Background technology

During oil exploitation, it is necessary to measure the pressure of down-hole and temperature, these accurately parameter oil well detection is had Critically important effect.One oil field putting into exploitation, formation pressure constantly can decline along with the growth of recovery time.In order to protect Hold oil field stable high yield it is necessary to makeup oil stressor layer of taking measures on customs clearance, and carry out this operation and conditions down-hole must be had entirely Face is understood.Measurement result is caused the biggest error due to external interference and anthropic factor by conventional test methodologies.Accordingly, it would be desirable to exploitation A kind of novel measurement equipment.

And current, single-chip microcomputer quickly grows, and has integrated level high, and volume is little, fast operation, good stability, anti-interference The advantages such as ability is strong, cheap.In Industry Control, data acquisition, the aspect such as electromechanical integration is used widely.

Utility model content

The purpose of this utility model is to provide a kind of time opening memory-type pressure table, and the design can be according to different ground Location condition, is configured manometric operation interval, sampling interval and time by the computer on ground, then by Pressure gauge It is put into the pressure and temperature under real-time automatic collecting and storage place under oil well, after testing, Pressure gauge is taken ground, by string The data of storage are passed to computer by mouth, then play back data, process and analyze.

The purpose of this utility model is realized by following technical proposals.

A kind of time opening memory-type pressure table, including main control chip, and the air pressure transmission being connected with main control chip respectively Sensor, temperature sensor, it is man-machine that described main control chip is provided with data memory module, wirelessly transmitting data command module, instrument Interactive interface and interface convertor；Described main control chip connects power module.

Preferably, described main control chip uses STC12C5A60S2 single-chip microcomputer.

Preferably, described data memory module uses the 24C02 memory module that atmel corp produces.

Preferably, described interface convertor is RS232-USB transducer.

Further, described RS232-USB interface convertor, it is built-in with USB transceiver, USB transceiver connects USB merit respectively Can controller, agitator and data buffer, USB function control device, agitator and data buffer respectively with UART interface phase Even.

Further, RS232-USB interface convertor is circumscribed with electric capacity.

Preferably, described baroceptor includes the micro-control unit being connected with main control chip, and micro-control unit connects respectively Connecing EEPROM and analog-digital converter, analog-digital converter connects piezoresistance sensor.

Further, described baroceptor is circumscribed with electric capacity.

The beneficial effects of the utility model are:

This time opening memory-type air gauge utilizes STC12C5A60S2 single-chip microcomputer as main control chip, is simulated by I/O port I2C bus communicates with baroceptor BMP180 and storage chip 24C02.Utilize the UART module within single-chip microcomputer real Now with the communication of computer, and then realize man-machine interaction based on serial communication.By utilizing the timer conter within single-chip microcomputer Realize the accurate control to the time so that whole system can normally work.During design, first select components and parts, then see The data book of components and parts, designs hardware circuit, and debugging routine is until successfully realizing function.

The hardware circuit used in the design is extremely simplified, and circuit is simple, and cost is low, good stability, the most powerful, Both reached required function, and saved again cost, be a practicality, innovative design.

Accompanying drawing explanation

Fig. 1 is this utility model structured flowchart；

Fig. 2 is this utility model RS232-USB interface convertor structured flowchart；

Fig. 3 is this utility model baroceptor structured flowchart；

Fig. 4 is utility model works theory diagram.

Detailed description of the invention

Below by the drawings and specific embodiments, this utility model is described in further details.

As it is shown in figure 1, this utility model one time opening memory-type pressure table, including main control chip, and respectively with The baroceptor of main control chip connection, temperature sensor, main control chip is provided with data memory module, wirelessly transmitting data life Making module, instrument man-machine interaction interface and interface convertor, main control chip is powered by power module.

This instrument mainly comprise structure:

1, single-chip microcomputer

The single-chip microcomputer model that this utility model uses is STC12C5A60S2, in this is a enhancement mode technical grade other 51 Core single-chip microcomputer, faster than traditional 51 single-chip microcomputers 10 times of its speed, RAM and ROM is obtained for the biggest expansion.The most also have Two serial ports and ISP download function.Have abundant I/O port, various communication protocol can be simulated, in order to lead to other modules Letter.It is at a high speed, low-power consumption, superpower jamproof 8051 single-chip microcomputers of new generation, instruction code completely compatible traditional 8051.

2, data storage EEPROM

This design is deposited into the data of the result every time measured and setting in a piece of EEPROM, in order to measures and terminates Rear reading, selects the 24C02 that atmel corp produces here.It has wider voltage power supply scope and operating temperature, stability Good, it is adapted to more severe working environment.Input pin filters through Schmidt trigger.Use I2C EBI, it is simple to and Different single chip communications.Supporting hardware writing protection, reliability is high.

3, RS232-USB interface convertor

Single-chip microcomputer output data are to be come by serial ports (UART) output, and this is different, so needing this with the interface of computer One transducer of sample.Here, this interface convertor of PL2303 is used.It can provide a full duplex asynchronous serial of RS232 The communicator solution that be connected convenient with USB functional interface.The agreement of its completely compatible USB2.0 of energy.As shown in Figure 2, should Device is built-in with USB transceiver, and USB transceiver connects USB function control device, agitator and data buffer, USB function respectively Controller, agitator are connected with the UART interface with whole modem control signals respectively with data buffer.Only need External several electric capacity achieve that the conversion of usb signal and RS232 signal, it is possible to be conveniently embedded into handheld device.

4, baroceptor

1. Choice of Sensors and general utility functions: BMP180 is a high accuracy, the pressure transducer of low-power consumption, its performance Brilliance, absolute precision reaches 0.03hpa, it is not necessary to outer clock circuit, can be by I2C bus and various microprocessor communication. As shown in Figure 3, there are a piezoresistance sensor, analog-digital converter in its inside, and the I2C bus of a piece of EEPROM and a serial connects The control unit of mouth.Micro-control unit is connected with main control chip, and micro-control unit connects EEPROM and analog digital conversion the most respectively Device, analog-digital converter connects piezoresistance sensor, baroceptor is also circumscribed with electric capacity.EEPROM stores calibration data, uses In compensating side-play amount, other parameters of temperature dependency and sensor.

2. temperature and the measurement of pressure

First in sheet, EEPROM reads calibration data, is used for calculating air pressure and temperature, and then single-chip microcomputer transmission one is opened Dynamic signal, pressure or temperature start to be measured, and after converting, transformation result is sent on single-chip microcomputer by I2C interface, then single Sheet machine calculates corresponding pressure and temperature restore in EEPROM by starting the calibration data that obtains and transformation result.

As shown in Figure 4, for utility model works process schematic, time opening memory-type pressure table is by string Mouthful, assign stopping can to this Pressure gauge, start, current time is set, acquisition interval is set, arrange in operation interval and reading So several the instructions of the information of secondary collection.When just powering on, Pressure gauge is in halted state, and indication LED is the brightest, is set by serial ports Put current time and time interval to be gathered and manometric operation interval, then send initiation command, Pressure gauge Will start according to the time interval set, time opening, single-chip microcomputer is recorded pressure and the temperature that Pressure gauge collects, is deposited Enter in EEPROM.Collection terminates, and takes out Pressure gauge, assigns halt instruction, or deenergization, stops Pressure gauge work, uses tricks Reading instruction assigned by calculation machine, and Pressure gauge will be spaced measurement time and the acquisition time of storage in EEPROM and manometric work Make data that are interval and that every time gather and be sent to computer by serial ports, the information that then people just can be received by computer It is analyzed, and then understands more infield information.

Claims (8)

1. a time opening memory-type pressure table, it is characterised in that: include main control chip, and be connected with main control chip respectively Baroceptor, temperature sensor, described main control chip be provided with data memory module, wirelessly transmitting data command module, Instrument man-machine interaction interface and interface convertor；Described main control chip connects power module.

A kind of time opening memory-type pressure table the most according to claim 1, it is characterised in that: described main control chip uses STC12C5A60S2 single-chip microcomputer.

A kind of time opening memory-type pressure table the most according to claim 1, it is characterised in that: described data memory module Use the 24C02 memory module that atmel corp produces.

A kind of time opening memory-type pressure table the most according to claim 1, it is characterised in that: described interface convertor is RS232-USB transducer.

A kind of time opening memory-type pressure table the most according to claim 4, it is characterised in that: described RS232-USB connects Mouth transducer, is built-in with USB transceiver, and USB transceiver connects USB function control device, agitator and data buffer respectively, USB function control device, agitator are connected with UART interface respectively with data buffer.

A kind of time opening memory-type pressure table the most according to claim 5, it is characterised in that: RS232-USB interface turns Parallel operation is circumscribed with electric capacity.

A kind of time opening memory-type pressure table the most according to claim 1, it is characterised in that: described baroceptor bag Including the micro-control unit being connected with main control chip, micro-control unit connects EEPROM and analog-digital converter, analog-digital converter respectively Connect piezoresistance sensor.

A kind of time opening memory-type pressure table the most according to claim 7, it is characterised in that: outside described baroceptor It is connected to electric capacity.