CN111366188A - Data acquisition and storage device for dynamic environment force measurement field - Google Patents
Data acquisition and storage device for dynamic environment force measurement field Download PDFInfo
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- CN111366188A CN111366188A CN201811596371.5A CN201811596371A CN111366188A CN 111366188 A CN111366188 A CN 111366188A CN 201811596371 A CN201811596371 A CN 201811596371A CN 111366188 A CN111366188 A CN 111366188A
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Abstract
The invention discloses a data acquisition and storage device for the field of dynamic environmental force measurement. Through the integrated design, organically combine all components, can carry out high-speed acquisition and storage to acceleration, angular velocity, temperature, earth magnetism signal, transmit data through data interface at last, send the environmental force data to the PC on. The invention is mainly applied to the field of dynamic environment force measurement such as transient signal measurement, aircraft attitude measurement, vehicle-mounted inertial signal measurement and the like. The invention integrates various signal acquisition and processing circuits in a narrow space through reasonable layout of electronic components, has the advantages of real-time reading and analysis, offline storage, high integration level, small occupied space, convenient installation, low power consumption, simple structure, strong stability, customization and the like, and is particularly suitable for the field of dynamic environmental force measurement of multi-sensor fusion.
Description
Technical Field
The invention relates to a data acquisition and storage device for the field of dynamic environment force measurement
Background
With the continuous and deep research in the fields of remote measurement, communication and the like, the acquisition of environmental force test data has more and more important significance. Engineers need complete test data to verify the motion model of the aircraft, providing basis for designing and improving the aircraft. The data acquisition and storage device is a main means for acquiring environmental force data and can provide original data in the flight process. The missile-borne data acquisition and storage device is often placed in a limited space of a missile body, needs to bear thousands of even tens of thousands of g of acceleration in the process of launching and landing, and has extremely severe working environment, so that the missile-borne data acquisition and storage device has the requirements of miniaturization and high reliability. Besides being constrained by the characteristics of the missile-borne recorder, the missile-borne recorder also needs to read and write the high-speed data stream. These all result in limited storage capacity and low transmission rates of conventional piggy-back recorders. However, as the number of types of signals measured on the missile increases and the data volume of part of the signals increases, the conventional missile-borne recorder cannot meet the storage requirements of high speed and large capacity.
The invention integrates various signal acquisition and processing circuits in a narrow space through software and hardware integrated design and reasonable layout of electronic components, has the advantages of real-time reading and analysis, offline storage, high integration level, small occupied space, convenient installation, low power consumption, simple structure, strong stability, customization and the like, and is particularly suitable for the field of dynamic environmental force measurement of multi-sensor fusion. The data storage device can acquire and store acceleration, angular velocity, temperature and geomagnetic signals at a high speed, and finally transmits data through the data interface to send environmental force data to the PC. The defects of large volume, simple function and the like of the traditional storage equipment can be overcome.
Disclosure of Invention
According to the invention, through an integrated design, the environmental force sensing module, the signal processing module and the data storage module are organically combined, so that high-speed acquisition and storage of acceleration, angular velocity, temperature and geomagnetic signals can be realized, and finally, data is transmitted through the data interface, and the environmental force data is sent to the PC. The invention is mainly applied to the field of dynamic environment force measurement such as transient signal measurement, aircraft attitude measurement, vehicle-mounted inertial signal measurement and the like. In order to solve the technical problems, the invention integrates various signal acquisition and processing circuits in a narrow space through reasonable layout of electronic components, and has the advantages of real-time reading and analysis, offline storage, high integration level, small occupied space, convenience in installation, low power consumption, simple structure, strong stability, customizability and the like, and the technical scheme adopted by the invention is as follows:
a data acquisition and storage device for the field of dynamic environmental force measurement comprises an environmental force sensing module, a signal processing module and a data storage module.
Compared with the prior art, the invention has the beneficial effects that:
1) the data acquisition and storage device oriented to the field of dynamic environmental force measurement organically combines all components by utilizing an integrated design, simplifies the design thought of the traditional data acquisition and storage device, and has the advantages of high integration level, small occupied space, convenience in installation, low power consumption, simple structure, strong stability and customization.
2) The data acquisition and storage device for the dynamic environment force measurement field, provided by the invention, is internally integrated with the signal processing unit, can analyze and process sensor data in real time according to actual conditions, and can be embedded with various filtering algorithms and data compression algorithms.
3) The invention can comprehensively analyze the environmental change of the test carrier by utilizing the inertia information sensing component, the magnetic field intensity sensing component, the temperature sensing component and the environment sensing component, and can perform data processing in a targeted manner.
4) The invention stores the acquired and processed data by the storage unit, the storage capacity is up to 1G, and the data can be transmitted to the upper computer by the serial port.
Drawings
FIG. 1 is a front view of a data acquisition and storage device oriented to the field of dynamic environmental force measurement;
FIG. 2 is a side view of a data acquisition and storage device oriented to the field of dynamic environmental force measurement;
FIG. 3 is a front component distribution diagram of a data acquisition and storage device for the dynamic environment force measurement field;
FIG. 4 is a diagram of a back side component distribution of a data acquisition and storage device for the dynamic environmental force measurement field;
Detailed Description
The invention discloses a data acquisition and storage device for the field of dynamic environmental force measurement, which comprises an environmental force sensing module, a signal processing module and a data storage module.
The environmental force perception module includes: the device comprises an x-axis gyroscope (U30), a y-axis gyroscope, a z-axis gyroscope, two 3-axis accelerometers (U6 and U8), two geomagnetic sensors (U16) and a temperature sensor (U20). Wherein the x-axis gyroscope (U11), the y-axis gyroscope and the z-axis gyroscope form a gyroscope measuring system of the environmental force measuring unit; 2 sets of three-axis accelerometers (U6, U8) constitute the accelerometer measurement system of the environmental force measurement unit. The 2 sets of biaxial magnetometers (U16, U15, U17, U18) constitute a geomagnetic measurement system constituting an environmental force measurement unit. The thermometers (U20, U21) constitute a temperature measuring system of the ambient force measuring unit.
The signal processing module includes: the system comprises processors STM 32F 767IIK6(U22), an FPGA (U23), serial port conversion chips (U31, U32, U33 and U34) and ADC conversion chips (U25, U26, U27 and U28). The sensor obtains environmental force data and then converts the data into digital quantity through the AD conversion chip, then processes through FPGA, and data transmission is to treater F767 through the FMC bus again, and the treater rethread serial ports is with data through the serial ports transmission to next module.
The data storage module includes: the system comprises a processor STM 32F 767IIK6(U29), a serial port conversion chip (U31, U32, U33 and U34) and a storage chip (U30). The processor obtains the data output by the signal processing module through the serial port, and processes, stores and displays the data through task scheduling. In addition, the module is communicated with an upper computer and a signal processing module through a serial port, and the working state of the system can be changed in real time.
The signal processing module and the data storage module are defined by a flexible board interface:
table 1 definition of the flexible board interface between the signal processing module and the data storage module:
| serial number | Port definition | Serial number | Port definition |
| 1 | GND | 14 | GND |
| 2 | IMU_TX | 15 | GND |
| 3 | IMU_RX | 16 | |
| 4 | GPS_RX | 17 | C_SWCLK |
| 5 | GPS_TX | 18 | TMS_FPGA |
| 6 | PW_GT | 19 | TDI_FPGA |
| 7 | GPS_PPS | 20 | TDO_FPGA |
| 8 | SPI2_CS | 21 | TCK_FPGA |
| 9 | SPI2_SCK | 22 | AVCC_5.5 |
| 10 | SPI2_MISO | 23 | AVCC_5.5 |
| 11 | SPI2_MISI | 24 | GND |
| 12 | DVCC_3.3 | 25 | GND |
| 13 | DVCC_3.3 |
Table 2 definition of the environment force sensing module and the flexible board interface of the signal processing module:
| serial number | Port definition | Serial number | Port definition |
| 1 | AX1 | 18 | MZ_OUT |
| 2 | AX2 | 19 | MAG_SET |
| 3 | AY1 | 20 | |
| 4 | AY2 | 21 | TEMP |
| 5 | AZ1 | 22 | USART1_TX |
| 6 | AZ2 | 23 | USART1_RX |
| 7 | GX_OUT | 24 | USART2_TX |
| 8 | TX_OUT | 25 | USART2_RX |
| 9 | GY_OUT | 26 | |
| 10 | TY_OUT | 27 | MAG_SET |
| 11 | GZ_OUT | 28 | SPI_CS |
| 12 | TZ_OUT | 29 | SPI_SCK |
| 13 | MX_OUT | 30 | SPI_MISO |
| 14 | M_SET_R | 31 | SPI_MOSI |
| 15 | MY_OUT | 32 | PPS |
| 16 | GND | 33 | GND |
| 17 | DVCC_3.3 | 34 | AVCC_5.5 |
In the field of dynamic environment force measurement such as transient signal measurement, aircraft attitude measurement, vehicle-mounted inertial signal measurement and the like, the data acquisition and storage device can be used for comprehensively measuring and storing acceleration, angular velocity, geomagnetic and temperature signals.
According to the invention, through the measuring device in the environment, the defects of large volume, high power consumption, single function and the like of the traditional acquisition and storage equipment can be overcome; the device has the advantages of high integration level, small occupied space, convenience in installation, low power consumption, simple structure, strong stability and customizability, and is particularly suitable for measuring dynamic environment forces in the fields of transient signal measurement, aircraft attitude measurement, vehicle-mounted inertial signal measurement and the like.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the claims of the present invention.
Claims (4)
1. A data acquisition and storage device for the field of dynamic environmental force measurement comprises an environmental force sensing module, an information processing module and a data storage module. Through the integrated design, organically combine all components, can carry out high-speed acquisition and storage to acceleration, angular velocity, temperature, earth magnetism signal, transmit data through data interface at last, send the environmental force data to the PC on.
2. The data acquisition and storage device for the dynamic environment force measurement field according to claim 1, which has a rigid-flexible board (rigid-flexible board) structure formed by combining three sub-circuit boards. The circuit board components are welded on three main circuit boards (hard boards), the three circuit boards are connected through flexible boards, and the flexible boards bear various digital and analog signals, power lines and ground lines.
3. The data acquisition and storage device oriented to the dynamic environment force measurement field as claimed in claim 1, wherein the circuit board is arranged and laid out according to the sequence of the power module, the data storage module, the signal processing module and the sensor module. The structure of the flexographic plate is shown in figure 1.
4. The data acquisition and storage device for the dynamic environment force measurement field as claimed in claim 1, wherein the rigid and flexible plate is designed by 6 layers, and the distribution of components is according to the following rules:
1) sensor module
The sensor module integrates two MEMS acceleration sensors, two geomagnetic sensors, three gyroscope sensors and a temperature sensor.
The acceleration sensor adopts an ADXL377 type 3-axis acceleration sensor, the two sensors are respectively positioned at the central positions of two sides of a sensor rigid plate and are orthogonal to an on-board coordinate axis, and 6 paths of accelerometer level signals are output through a signal tuning circuit; the geomagnetic signals are obtained through two orthogonal HMC1052 geomagnetic sensors, one chip is located at the position U16 on the rigid board in the figure 3, the direction is orthogonal to the on-board coordinate axis, the other chip is located on a small circuit board at the notch of the sensor circuit board, the small circuit board is installed perpendicular to the rigid circuit board, and the geomagnetic chip outputs geomagnetic signals of the vertical axis; angular velocity signals were acquired using 3 ADXRS649 single axis gyroscope sensors, also mounted in a three axis orthogonal manner, as shown in fig. 3, U11 for X axis angular velocity signals. The other two gyroscope sensors are positioned on a small circuit board vertically arranged at the gap of the sensor circuit board, and the orthogonal installation mode is also adopted; the temperature sensor adopts LMT87QDCKTQ1, is positioned at U20 position in figure 3, and is assisted with a signal processing circuit, and single-channel temperature data are output.
2) Signal processing module
The signal processing circuit mainly comprises an STM 32F 767 chip, an FPGA chip of A3P600-2FG-144IY model and four AD7699BCPZ chips.
3) A data storage module:
the data storage module mainly comprises an STM 32F 767IIK6 chip, a storage chip MT29F8G08ABACAH4-IT and a serial port conversion chip MAX3490 ESA.
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Cited By (2)
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| CN111966123A (en) * | 2020-08-28 | 2020-11-20 | 北京信息科技大学 | Navigation equipment and aircraft |
| CN116088397A (en) * | 2023-03-07 | 2023-05-09 | 北京理工大学 | Multi-sensor fusion flight process nutation solving device based on storage testing method |
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