High-temperature-resistant low-power-consumption storage type pressure gauge

Abstract

The high-temperature-resistant low-power-consumption storage type pressure gauge comprises an acquisition board and a power supply, the power supply supplies power to the acquisition board, the acquisition board is provided with a temperature and pressure sensor, a control processing unit and a memory, the control processing unit comprises a first single-chip microcomputer and a second single-chip microcomputer, the first single-chip microcomputer is used for controlling the power supply and processing data, and the second single-chip microcomputer is used for controlling the power supply and processing data. The second single-chip microcomputer outputs a fixed clock source for the first single-chip microcomputer, the temperature and pressure sensor and the storage are in communication connection with the control processing unit, and the temperature and pressure sensor converts collected temperature and pressure signals into electric signals and outputs the electric signals to the first single-chip microcomputer. The first single-chip microcomputer processes the electric signals and stores processed data in the memory. The acquisition board, the temperature and pressure sensor, the control processing unit, the memory and the power supply are all high-temperature-resistant elements. The pressure gauge is low in power consumption, resistant to high temperature, small in size and capable of storing data for a long time, and therefore stable work in the complex underground environment is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to temperature pressure measurement technical field, concretely relates to a high temperature resistant low -power consumption storage type pressure gauge. BACKGROUND

[0002] In downhole operations such as oil, accurate measurement of downhole pressure is crucial to production safety and resource development. However, the downhole environment is complex and harsh, with problems such as narrow space, high temperature, and humidity. The traditional pressure gauge often faces problems such as high power consumption, insufficient endurance, and inconvenient data storage when used in the well. In downhole operations, accurate measurement of pressure is crucial to ensure production safety and optimize the operation process. However, the existing pressure gauge often has problems such as high power consumption, insufficient endurance, inconvenient data storage, and high failure rate in high temperature environment when used in the well, which makes it difficult to meet the needs of long-term downhole monitoring.

[0003] The pressure gauge suitable for high-temperature and high-pressure natural gas wells (Chinese patent No. 201820825963.9) discloses a pressure gauge using a high-temperature and high-pressure resistant sealing assembly. To test the high-temperature and high-pressure environment of natural gas wells, a combination of end face metal end face sealing ring sealing and two fluorine rubber radial elastic sealing is used. The combination sealing form can seal and isolate the electrical chamber of the pressure gauge from the external environment, ensuring the normal use of the pressure gauge in high temperature environment. However, in a high temperature environment, if the pressure gauge fails, it is difficult to distinguish whether the failure is caused by the sealing assembly or the electrical components without expensive and time-consuming laboratory failure analysis. At the same time, the cost of high-temperature resistant sealing materials is generally high, which will increase the installation and maintenance cost of the pressure gauge. At the same time, due to the large power consumption of the application, the volume of the configured power supply is large, occupying the limited sealed space of the pressure gauge, affecting the miniaturization of the pressure gauge.

[0004] In summary, there is an urgent need for a pressure gauge that can work stably in downhole environment, low power consumption, long time storage function and high temperature resistance. UTILITY MODEL CONTENT

[0005] Based on the above, the purpose of the utility model is to improve the existing downhole pressure gauge, provide a high-temperature resistant low-power consumption storage type pressure gauge, which can work stably in downhole environment, low power consumption, long time storage function and high temperature resistance.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of high-temperature-resistant low-power storage pressure gauge, the high-temperature-resistant low-power storage pressure gauge includes acquisition board, temperature pressure sensor is provided on the acquisition board, control processing unit, memory and power supply, the power supply is powered for the acquisition board, the control processing unit includes first single-chip microcontroller and second single-chip microcontroller, the first single-chip microcontroller is used to control power supply and data processing, the second single-chip microcontroller is the first single-chip microcontroller output fixed clock source, the temperature pressure sensor and the memory are connected with the control processing unit respectively, the temperature pressure sensor is converted into electrical signal output to the first single-chip microcontroller with temperature pressure signal collected, the first single-chip microcontroller carries out processing to electrical signal and exports the data after processing to the memory, completes data storage, and the acquisition board, the temperature pressure sensor, the control processing unit, the memory and the power supply are all high-temperature-resistant elements.

[0008] As a kind of high-temperature-resistant low-power storage pressure gauge, the first single-chip microcontroller uses the single-chip microcontroller of model PIC18F26K80.

[0009] As a kind of high-temperature-resistant low-power storage pressure gauge, the second single-chip microcontroller uses the single-chip microcontroller of model PIC12F508.

[0010] As a kind of high-temperature-resistant low-power storage pressure gauge, the acquisition board further includes serial module, the serial module is used for and the serial communication of host computer, and the serial module also uses high-temperature-resistant element.

[0011] As a kind of high-temperature-resistant low-power storage pressure gauge, the memory is FLASH memory.

[0012] As a kind of high-temperature-resistant low-power storage pressure gauge, the power supply is high-temperature-resistant battery.

[0013] The utility model has the advantages that:

[0014] The utility model improves existing downhole pressure gauge, provides a kind of high-temperature-resistant low-power storage pressure gauge by high-temperature-resistant element as foundation, realizes timing control function by control processing module, uses preset time interval to wake up data acquisition, to realize low-power design, simultaneously uses FLASH memory to store data and by serial module and outside communication, with high-temperature-resistant, low-power and data storage function, to work stably in the complex environment in well, simultaneously, since the low-power design of the application, use small volume power supply can be directly integrated to acquisition board, reduce the volume of pressure gauge, to realize the miniaturization design of pressure gauge, more widely applicable, and it is beneficial to transport and carry. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the contents of the embodiments of the present application and these drawings without any creative effort.

[0016] Figure 1 It is a kind of high-temperature-resistant low-power storage pressure gauge schematic diagram provided by the embodiment of the present application;

[0017] Reference signs:

[0018] 1-acquisition board;2-control processing unit;21-first single-chip microcomputer;22-second single-chip microcomputer;3-temperature and pressure sensor;4-memory;5-serial port module;6-power supply;7-upper computer. DETAILED DESCRIPTION

[0019] The present application will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, rather than all the structures.

[0020] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or it can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0022] In the description of the embodiments, the terms "upper", "lower", "left", "right" and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0023] The utility model embodiment provides a kind of low-power storage pressure gauge of high temperature resistance, as shown in it, Figure 1 Temperature pressure data in memory 4 is read by serial port module 5 by host computer 7 and is displayed, analyzed and processed.

[0024] Further, acquisition board 1, control processing unit 2, temperature pressure sensor 3, memory 4, serial port module 5 are all high-temperature-resistant elements with power supply 6, and the high-temperature-resistant function of the pressure gauge is realized by using high-temperature-resistant elements, which can work stably in the environment of -20℃ to 175℃ underground.

[0025] Optionally, the first single-chip microcomputer is a single-chip microcomputer of model PIC18F26K80, and the second single-chip microcomputer is a single-chip microcomputer of model PIC12F508. Both of the two types of single-chip microcomputers are low-power single-chip microcomputers resistant to high temperature.

[0026] Alternatively, memory 4 is a FLASH memory, which is used to store temperature pressure data and will not lose data in the case of power failure. The FLASH memory can be selected from a variety of capacities such as 4MByte, 8MByte and 16Mbyte according to actual needs to meet the requirement of long-time data storage.

[0027] In practical application, the control processing unit 2 and the power supply 6 form a low-power power management module, which controls the power-on and power-off of the temperature and pressure sensor 3 and the memory 4. The control processing unit 2 has a timing wake-up function, which can wake up the temperature and pressure sensor 3 at a preset time interval for collection, and store the collected data into the memory 4. After the collection is completed, the first single-chip microcomputer 21 controls the power supply 6 to perform the power-off operation on the temperature and pressure sensor 3 and the memory 4, and controls the first single-chip microcomputer 21 to enter a sleep state. The second single-chip microcomputer 22 outputs a fixed clock source for timing and waits for the next collection period to wake up the first single-chip microcomputer 21. The first single-chip microcomputer 21 controls the power supply 6 to perform the power-on operation on the pressure sensor 3 and the memory 4, and the above-mentioned temperature and pressure data collection process is repeated. In the sleep working state, the overall working current of the pressure gauge is 70uA, and in the normal working state, the overall working current of the pressure gauge is 1mA, so that the low-power design of the pressure gauge is realized, and the endurance time of the pressure gauge is 6 months.

[0028] Further, because the pressure gauge in the embodiment adopts a low-power design, the power supply 6 can adopt a small-size high-temperature-resistant battery and be integrated on the collection board 1, so that the miniaturization design of the pressure gauge is realized, the volume of the pressure gauge is reduced, and the transportation, carrying and installation of the pressure gauge are facilitated.

[0029] The specific working process is as follows:

[0030] Step 1: The second single-chip microcomputer 22 sets a data collection interval time and outputs a fixed clock source to provide a timing function for the first single-chip microcomputer 21.

[0031] Step 2: When the preset data collection interval time meets the preset value, the second single-chip microcomputer 22 wakes up the first single-chip microcomputer 21.

[0032] Step 3: The first single-chip microcomputer 21 sends an instruction to control the power supply 6 to perform the power-on operation on the temperature and pressure sensor 3 and the memory 4.

[0033] Step 4: The temperature and pressure sensor 3 starts to collect external temperature and pressure signals.

[0034] Step 5: The temperature and pressure sensor 3 converts the collected temperature and pressure signals into electric signals and outputs them to the first single-chip microcomputer 21. The first single-chip microcomputer 21 processes the electric signals and stores the processed data into the memory 3.

[0035] Step 6: When the preset data collection time is completed, the first single-chip microcomputer 21 sends an instruction to control the power supply 6 to perform the power-off operation on the temperature and pressure sensor 3 and the memory 4.

[0036] Step 7: The first single-chip microcomputer 21 enters a sleep state, and the second single-chip microcomputer 22 continues to output a fixed clock source for timing and waits for the next data collection period to wake up the first single-chip microcomputer 21.

[0037] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

[0038] It is to be understood that the disclosure is not limited to the precise construction hereinafter described and as shown in the attached drawings, and that various changes in form and detail can be made therein without departing from the scope thereof. The scope of the disclosure should only be limited by the appended claims.

Claims

1. A high-temperature resistant, low-power storage pressure gauge, characterized in that, The high-temperature resistant, low-power storage pressure gauge includes a data acquisition board. The data acquisition board is equipped with a temperature and pressure sensor, a control processing unit, a memory, and a power supply. The power supply powers the data acquisition board. The control processing unit includes a first microcontroller and a second microcontroller. The first microcontroller controls the power supply and processes data. The second microcontroller outputs a fixed clock source to the first microcontroller. The temperature and pressure sensor and the memory are communicatively connected to the control processing unit. The temperature and pressure sensor converts the acquired temperature and pressure signals into electrical signals and outputs them to the first microcontroller. The first microcontroller processes the electrical signals and outputs the processed data to the memory to complete data storage. The data acquisition board, the temperature and pressure sensor, the control processing unit, the memory, and the power supply are all high-temperature resistant components.

2. The high-temperature resistant, low-power storage pressure gauge according to claim 1, characterized in that, The first microcontroller is a PIC18F26K80 microcontroller.

3. The high-temperature resistant, low-power storage pressure gauge according to claim 1, characterized in that, The second microcontroller is a PIC12F508 microcontroller.

4. The high-temperature resistant, low-power storage pressure gauge according to claim 1, characterized in that, The acquisition board also includes a serial port module, which is used to communicate with the host computer via serial port, and the serial port module also uses high-temperature resistant components.

5. A high-temperature resistant, low-power storage pressure gauge according to claim 1, characterized in that, The memory is a FLASH memory.

6. A high-temperature resistant, low-power storage pressure gauge according to claim 1, characterized in that, The power source is a high-temperature resistant battery.

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