CN215264077U - Distributed low-power-consumption portable acquisition device for earthquake precursor detection - Google Patents
Distributed low-power-consumption portable acquisition device for earthquake precursor detection Download PDFInfo
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- CN215264077U CN215264077U CN202120646962.XU CN202120646962U CN215264077U CN 215264077 U CN215264077 U CN 215264077U CN 202120646962 U CN202120646962 U CN 202120646962U CN 215264077 U CN215264077 U CN 215264077U
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Abstract
The utility model relates to a portable collection system of distributed low-power consumption for earthquake precursor detects, including ARM controller module, power module, communication module, data storage module, the automatic re-setting module, the crystal oscillator circuit of controller, the module is downloaded to the procedure, analog-to-digital conversion module and three channel small-signal conditioning module, it uses ARM controller module as control core, the external 3 data acquisition channels that provide can accomplish synchronous collection to the analog input signal of front end, upload for host computer and host computer through communication module to the data that the collection came and carry out parameter configuration to the collection card through communication module. The utility model is used for portable collection system of distributed low-power consumption that earthquake precursor detected can realize three channel synchronous acquisitions, has better portability, and the better large tracts of land distributed measurement that is applicable to through software timesharing control, can realize uploading data in real time at the passive form under the many slaves.
Description
Technical Field
The utility model belongs to the technical field of geophysical exploration, concretely relates to a portable collection system of distributed low-power consumption for earthquake precursor detects is applied to earthquake precursor geomagnetic anomaly signal and detects the trade.
Background
At present, the multichannel synchronous acquisition devices used in the aspect of geophysical magnetic field detection comprise USB-4431 of NI company, an acquisition card (RXU-3ER) of Phoenix company, PXI-2020/2022 series of Linghua technology and the like. Most of the existing acquisition devices are universal, have the advantages of high integration level and good performance, and are commercially used in a large scale.
However, in the detection of the pre-earthquake mega geomagnetic abnormal signals, if a large area and multiple points are needed for measurement and the equipment is miniaturized, the acquisition card of the existing acquisition device is not suitable for being used because the acquisition card does not have embeddability, high cost, complex design structure and is not beneficial to a communication interface with a singlechip. In addition, the existing acquisition device cannot flexibly set each acquisition card on the 485 bus to inquire the data of each acquisition card in turn at intervals under the condition of acquiring the data in real time, which is very important for distributed acquisition data and bus type data transmission.
Disclosure of Invention
An object of the utility model is to provide a portable collection system of distributed low-power consumption for earthquake precursor detects to solve the unsuitable large tracts of land of current collection system, multiple spot and measure and miniaturized equipment, be not suitable for the problem of distributed multiple spot data acquisition.
The utility model aims at realizing through the following technical scheme:
a distributed low-power-consumption portable acquisition device for earthquake precursor detection comprises an ARM controller module 1, a power supply module 2, a communication module 3, a data storage module 4, an automatic reset module 5, a crystal oscillator circuit 6 of a controller, a program downloading module 7, an analog-to-digital conversion module 8 and a three-channel small signal conditioning module 9;
the data storage module 4, the automatic reset module 5, the crystal oscillator circuit 6 of the controller, the program downloading module 7 and the analog-to-digital conversion module 8 are respectively connected with the ARM controller module 1; the three-channel small signal conditioning module 9 is connected with the communication module 3 through the analog-to-digital conversion module 8, the AND gate logic circuit 11 and the ARM controller module 1; the power supply module 2 is also respectively connected with the ARM controller module 1, the communication module 3, the data storage module 4, the automatic reset module 5, the AND gate logic circuit 11, the analog-to-digital conversion module 8 and the three-channel small signal conditioning module 9; the analog-to-digital conversion module 8 is also connected with an AD crystal oscillator circuit 10.
Further, the data storage module 4 is used for storing the temporary storage data by using a ring buffer for three-channel data.
Further, the crystal oscillation frequency of the crystal oscillation circuit 6 of the controller is 8 MHz.
Furthermore, the analog-to-digital conversion module 8 adopts three 24-bit acquisition chips, and is configured to convert the analog signal conditioned by the analog three-channel small-signal conditioning module 9 into a digital signal, and perform SPI communication with the ARM controller module 1.
Furthermore, the three acquisition chips use the same crystal oscillator, and the crystal oscillator frequency is 7.68 MHz.
Further, the three-channel small-signal conditioning module 9 is connected with the three-component induction type magnetic sensor, and can amplify the weak small signals output and induced by the three-component induction type magnetic sensor, so as to condition the weak small signals into a voltage range suitable for input of a subsequent AD acquisition circuit.
Further, the and logic circuit 11 is connected to the three acquisition chips by using an and chip, and is configured to synchronously trigger external interrupts by using the three acquisition chips.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a distributed low-power consumption portable collection system for earthquake precursor detects selects the controller that the performance is suitable according to the actual conditions that earthquake precursor detected, has reduced collection system's consumption and cost under the condition of guaranteeing the performance; the communication module can be used for conveniently carrying out data communication with various upper computers; three 24-bit chips are adopted to realize three-channel data synchronous acquisition, the data precision is high enough under the condition, the transportability is good, the method is better suitable for large-area distributed measurement, and the data can be uploaded passively in real time under multiple slave machines through time-sharing control.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a block diagram of a distributed low power portable acquisition device for seismic precursor detection;
figure 2 the utility model discloses a portable collection system's of distributed low-power consumption work flow chart for earthquake precursor detects.
In the figure, the controller comprises an ARM controller module 1, a power supply module 3, a communication module 4, a data storage module 5, a self-reset module 6, a crystal oscillator circuit 7 of the controller, a program downloading module 8, an analog-to-digital conversion module 9, a three-channel small signal conditioning module 10, an AD crystal oscillator circuit 11 and an AND gate logic circuit.
Detailed Description
The invention will be further described with reference to the following examples:
the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the utility model discloses a portable collection system of distributed low-power consumption for earthquake precursor detects, including ARM controller module 1, power module 2, communication module 3, data storage module 4, automatic re-setting module 5, the crystal oscillator circuit 6 of controller, program download module 7, analog-to-digital conversion module 8 and three-channel small-signal conditioning module 9;
the data storage module 4, the automatic reset module 5, the crystal oscillator circuit 6 of the controller, the program downloading module 7 and the analog-to-digital conversion module 8 are respectively connected with the ARM controller module 1; the three-channel small signal conditioning module 9 is connected with the communication module 3 through the analog-to-digital conversion module 8, the AND gate logic circuit 11 and the ARM controller module 1 for communication; the power supply module 2 is also respectively connected with the ARM controller module 1, the communication module 3, the data storage module 4, the automatic reset module 5, the AND gate logic circuit 11, the analog-to-digital conversion module 8 and the three-channel small signal conditioning module 9; the analog-to-digital conversion module 8 is also connected with an AD crystal oscillator circuit 10.
The utility model is used for portable collection system of distributed low-power consumption that earthquake precursor detected to ARM controller module 1 is the core, and the external 3 data acquisition passageways that provide can accomplish synchronous collection to the analog input signal of front end, passes to host computer and host computer through RS485 communication module to the data that come to gathering and carries out parameter configuration to the collection card through communication module 3.
The ARM controller module 1 adopts STM32F103ZET6 with large memory capacity. An RS485 communication interface is arranged at an external leading-out port of the acquisition device and is in data communication with an upper computer through a serial port and a communication module 3.
The data storage module 4 selects a 32G memory card to store data for a long time. The three-channel data are stored temporarily by using the annular buffer area, and are uploaded when the host computer inquires the data, so that the data are uploaded in time under the condition that the host computer inquires the data, and the data are collected uninterruptedly.
The automatic reset module 5 selects MAX811T to perform power-on reset on the ARM controller module 1.
The crystal oscillator frequency of the controller is 8MHz, and is used for providing 8MHz clock frequency for the ARM controller module 1.
And the program downloading module 7 is used for downloading data to the ARM controller module 1.
The analog-digital conversion module 8 selects three 24-bit ADS1256 acquisition chips to realize three-channel synchronous acquisition of the induction type magnetic sensor, digitalizes the analog signal conditioned by the three-channel small signal conditioning module 9, communicates with the ARM controller module 1 through the SPI bus, and realizes three chips to synchronously trigger external interruption through the AND logic circuit 11 to realize three-channel acquisition synchronization. The same crystal oscillator is used for the three acquisition chips, so that the analog-to-digital conversion synchronization of the three acquisition chips can be ensured, and the crystal oscillator frequency is 7.68 MHz.
The three-channel small signal conditioning module 9 is connected with the three-component induction type magnetic sensor, and can amplify the weak small signals induced by the three-component induction type magnetic sensor to condition the signals into a voltage range suitable for being input by a subsequent AD acquisition circuit.
The and gate logic circuit 11 is connected with the three acquisition chips by using the and gate chip 74HC32, detects the input signals output by the three analog-to-digital conversion modules 8 (the three acquisition chips) to the and gate logic circuit 11, and then the three acquisition chips are all converted, and immediately outputs logic 0 to trigger the controller to read data after detecting the signals which are all converted, so that the external interruption of the unified trigger controller is performed when the conversion of the three acquisition chips is completed.
The power supply module 2 in fig. 1 mainly includes: the +12V to +5V is used for supplying power to the analog working voltage of the acquisition chip and the communication module, the +5V to AD _2.5V voltage is provided for the reference voltage of the middle acquisition chip and the voltage lifting circuit in the middle three-channel small-signal conditioning module 9 as the lifting voltage reference value, the +5V to +3.3V is used for supplying power to the ARM controller module 1, the AND gate logic circuit 11, the analog-digital conversion module 8, the automatic reset module 5 and the data storage module 4, and the +/-12V to +/-8V is used for supplying the working voltage to the amplifier circuit and the voltage lifting circuit in the three-channel small-signal conditioning module 9.
The three-channel small signal conditioning module 9 amplifies small signals sensed by the three-component sensing type magnetic sensor to an analog voltage range suitable for being input by an acquisition circuit, three acquisition chips convert three analog signals into digital signals, when the ARM controller module 1 detects an external interrupt signal of which data conversion is finished, the converted digital signals are read through an SPI bus, and finally data are uploaded through a 485 bus when an upper computer inquires data.
The utility model discloses a distributed low-power consumption portable collection system for earthquake precursor detects uses three acquisition chips to gather the analog data of three passageways, and three analog-to-digital conversion chips use the same crystal oscillator circuit, just so can guarantee that three passageways possess the same operating speed; three analog-to-digital conversion chips are mounted on the same SPI bus, so that the three chips can be ensured to be simultaneously subjected to operations with corresponding functions such as initialization setting, conversion starting and the like, and the effect of synchronous acquisition is further ensured to be achieved; the real-time data uploading is represented by: the device is mounted on a 485 bus through RS485, whether the device is inquired or not is determined through detecting a communication protocol with an upper computer, and then the device carries out corresponding operation. Therefore, three-channel synchronous acquisition can be realized.
The utility model discloses a portable collection system of distributed low-power consumption for earthquake precursor detects can realize making the cluster machine can accomplish to upload in real time when the host computer carries out the data of inquiring each collection card in turn at a period of time when many cluster machine equipment is carried to 485 buses, and accomplish to gather incessantly; the acquisition module and the power supply module are further simplified according to the use condition, so that the power consumption of the system is further reduced; the system can be more suitable for the distributed multipoint data acquisition condition.
As shown in fig. 2, the utility model relates to a working process of a portable collection system of low-power consumption for the distributed collection of earthquake precursor detection, including following step:
a. the signal sources for the collected data are: when the three-component induction type magnetometer works, a weak change voltage value can be output due to the change of the surrounding geomagnetic field, and the voltage value is properly amplified to be suitable for the input range of an acquisition chip through a three-channel small signal conditioning module circuit in the figure 1 so as to facilitate the subsequent data acquisition and processing.
b. In the step a, the voltage after the two-step signal conditioning is performed through the operational amplifier and the voltage lifting in the three-channel small signal conditioning module 9 circuit is transmitted into the three-channel analog-to-digital conversion circuit for conversion, and after the three channels are all converted, the signals are all transmitted to the AND logic circuit 11, and the circuit can immediately output a low level to trigger the ARM controller module 1 in the graph 1 to read the digital quantity after the three channels are converted.
c. After the data in the ADS1256 are read and stored for a period of time in the step b, the data are uploaded according to the detected data command of the upper computer, and the stored data can be divided into two types: the long-time local storage uses the 32G SD card mainly for verification experiments and data backup for a period of time, and the short-time storage uses the internal storage resource of the controller to open up a ring buffer area for storing data, and is mainly used for temporarily storing the data to be uploaded for a short period of time.
d. When the voltage is unstable when the system is powered on, the automatic reset module 5 in fig. 1 can effectively avoid the problem that the controller cannot work normally due to the unstable voltage when the system is powered on.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (7)
1.A distributed low-power consumption portable acquisition device for seismic precursor detection is characterized in that: the system comprises an ARM controller module (1), a power supply module (2), a communication module (3), a data storage module (4), an automatic reset module (5), a crystal oscillator circuit (6) of the controller, a program downloading module (7), an analog-to-digital conversion module (8) and a three-channel small signal conditioning module (9);
the data storage module (4), the automatic reset module (5), the crystal oscillator circuit (6) of the controller, the program downloading module (7) and the analog-to-digital conversion module (8) are respectively connected with the ARM controller module (1); the three-channel small signal conditioning module (9) is connected with the communication module (3) through the analog-to-digital conversion module (8), the AND gate logic circuit (11) and the ARM controller module (1); the power supply module (2) is also respectively connected with the ARM controller module (1), the communication module (3), the data storage module (4), the automatic reset module (5), the AND gate logic circuit (11), the analog-to-digital conversion module (8) and the three-channel small signal conditioning module (9); the analog-to-digital conversion module (8) is also connected with an AD crystal oscillator circuit (10).
2. A distributed low power portable acquisition device for seismic precursor detection according to claim 1, characterized in that: the data storage module (4) is used for storing temporary storage data by using a ring buffer for three-channel data.
3. A distributed low power portable acquisition device for seismic precursor detection according to claim 1, characterized in that: and the crystal oscillation frequency of a crystal oscillation circuit (6) of the controller is 8 MHz.
4. A distributed low power portable acquisition device for seismic precursor detection according to claim 1, characterized in that: the analog-digital conversion module (8) adopts three 24-bit acquisition chips and is used for converting the analog signals conditioned by the three-channel small-signal conditioning module (9) into digital signals and carrying out SPI communication with the ARM controller module (1).
5. The distributed low-power portable acquisition device for seismic precursor detection according to claim 4, wherein: the three acquisition chips use the same crystal oscillator, and the frequency of the crystal oscillator is 7.68 MHz.
6. A distributed low power portable acquisition device for seismic precursor detection according to claim 1, characterized in that: the three-channel small signal conditioning module (9) is connected with the three-component induction type magnetic sensor, and can amplify the weak small signals output and induced by the three-component induction type magnetic sensor to condition the weak small signals into a voltage range suitable for input of a subsequent AD acquisition circuit.
7. A distributed low power portable acquisition device for seismic precursor detection according to claim 1, characterized in that: and the AND logic circuit (11) is connected with the three acquisition chips by adopting an AND chip and is used for synchronously triggering external interruption by the three acquisition chips.
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| CN202120646962.XU CN215264077U (en) | 2021-03-30 | 2021-03-30 | Distributed low-power-consumption portable acquisition device for earthquake precursor detection |
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| CN202120646962.XU CN215264077U (en) | 2021-03-30 | 2021-03-30 | Distributed low-power-consumption portable acquisition device for earthquake precursor detection |
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