CN211015103U

CN211015103U - FPGA-based temporary data acquisition system

Info

Publication number: CN211015103U
Application number: CN201922415654.1U
Authority: CN
Inventors: 王艳红
Original assignee: Guangzhou Youke Technology Service Co ltd
Current assignee: GUANGDONG BAXTRAND TECHNOLOGY Co.,Ltd.
Priority date: 2019-12-29
Filing date: 2019-12-29
Publication date: 2020-07-14
Anticipated expiration: 2029-12-29

Abstract

The utility model discloses a face empty data acquisition system based on FPGA relates to information acquisition technical field, contains FPGA controller module, temperature sensor, angle sensor, big dipper orientation module, machine carries terminal, SM5852 atmospheric pressure collection module, conditioning circuit module, IO port control module, outside crystal oscillator module, power drive module, valve motor, valve, communication module, optoelectronic coupler, current-voltage detection module, DC/DC transform module and power module. The utility model discloses can reliably gather sensor data steadily to can communicate with big dipper orientation module and machine-carried terminal for a long time steadily, can send instruction control data acquisition system through ground control system.

Description

FPGA-based temporary data acquisition system

Technical Field

The utility model relates to an information acquisition technical field, more specifically say, the utility model relates to a face empty data acquisition system based on FPGA.

Background

At present, various mature data acquisition systems are available, and are mainly used in the fields of industrial production, environmental monitoring, aerospace and scientific research. Most real-time data acquisition systems select a DSP (digital Signal processing) controller and a microcontroller as control cores, complex algorithms are easy to realize, but the DSP (digital Signal processing) controller and the microcontroller are limited by information throughput and bandwidth, cannot realize parallelization processing, and are weak in high-speed large-batch data acquisition. A Field Programmable Gate Array (FPGA) device with a very strong ability to process data in parallel is favored, and a data acquisition system using the FPGA as a control core is also popular. The FPGA has the characteristics of high flexibility, strong expandability and rich resources, and can deal with interface protocols in various forms, so that the FPGA can be widely applied to a data acquisition system. Some FPGAs are antifuse, have very high reliability and stability, and are a mandatory option in certain aerospace applications.

The low temperature, low pressure, high radiation of earth's adjacent space, the environment is extremely abominable, and the sensor and the control unit of data acquisition system receive the influence very easily and work unusually, the phenomenon that the system collapses appears even. Stability needs to be considered in designing a data acquisition system in this environment. The FPGA can realize a complex circuit and reduce electromagnetic interference caused by wiring on a circuit board. Compared with a DSP controller and other CPU microcontrollers, the FPGA generation hardware circuit has the characteristic of being more interference-resistant. The former method for reliability processing includes redundancy structure design and read-back check and reconfiguration of configuration memory. Meanwhile, the reliability of the data acquisition system also has reasonable evaluation indexes, such as operating environment, system integration, man-machine coupling, scheme maturity and safety.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a face empty data acquisition system based on FPGA, it can reliably gather sensor data steadily to can communicate with big dipper orientation module and machine year terminal for a long time steadily, can send instruction control data acquisition system through ground control system.

In order to achieve the above object, the utility model provides a following technical scheme:

a FPGA-based temporary data acquisition system comprises an FPGA controller module, a temperature sensor, an angle sensor, a Beidou positioning module, an airborne terminal, an SM5852 air pressure acquisition module, a conditioning circuit module, an IO port control module, an external crystal oscillator module, a power driving module, a valve motor, a valve, a communication module, a photoelectric coupler, a current and voltage detection module, a DC/DC conversion module and a power supply module; the temperature sensor, the angle sensor, the Beidou positioning module, the IO port control module, the airborne terminal, the external crystal oscillator module and the communication module are respectively connected with the FPGA controller module; the SM5852 air pressure acquisition module is connected with the FPGA controller module through a conditioning circuit module, the valve is connected with the FPGA controller module through a photoelectric coupler, and the FPGA controller module is connected with a valve motor through a power driving module; and the power supply module is connected with the FPGA controller module through the current and voltage detection module and the DC/DC conversion module respectively.

As a further preferred scheme of the FPGA-based blank data acquisition system of the utility model, a differential bridge circuit, an amplifying and filtering circuit and an AD conversion module are arranged between the temperature sensor and the FPGA controller module; the temperature sensor is connected with the FPGA controller module through the differential bridge circuit, the amplifying and filtering circuit and the AD conversion module in sequence.

As a further preferred scheme of the empty data acquisition system faces based on FPGA, power module contains main power supply and battery.

As a further preferred scheme of the empty data acquisition system is faced based on FPGA, FPGA controller module chooses for use the ring IV E series's of Altera EP4CE22F1717 as acquisition system's controller.

As the utility model relates to a face empty data acquisition system's further preferred scheme based on FPGA, temperature sensor adopts PT100 temperature sensor.

As the utility model relates to a face empty data acquisition system's further preferred scheme based on FPGA, FPGA controller module links to each other with machine carries terminal through two RS422 interfaces.

As the utility model relates to a face empty data acquisition system's further preferred scheme based on FPGA, FPGA controller module is through two RS232 interface connection big dipper orientation module.

As the utility model relates to a face empty data acquisition system's further preferred scheme based on FPGA, ADI company ADM2587E is chooseed for use to the chip of RS422 interface.

As a further preferred scheme of the empty data acquisition system faces based on FPGA, the chip of RS232 interface adopts ADI company's ADM 3251E.

The utility model discloses a technological effect and advantage:

1. the utility model can reliably and stably acquire sensor data, can stably communicate with the Beidou positioning module and the airborne terminal for a long time, and can send commands to control the data acquisition system through the ground control system;

2. the utility model discloses face empty data acquisition system has mainly included minimum system module, sensor module, UART serial port communication module and the control module who uses FPGA as the controller, and minimum system is the peripheral circuit that maintains FPGA controller normal operating; the sensor module is used for collecting and conditioning signals such as temperature, angle, current and voltage, and the like, and the signals are divided into main board signals and slave board signals due to redundancy of hardware; the UART serial port communication module comprises 2 RS232 serial ports connected with the Beidou positioning module and 2 RS422 serial ports connected with the airborne terminal; the control module mainly comprises a valve control module and a temperature control module, and the temperature control module is used for controlling the heating resistor to maintain normal operation of components on the circuit board.

Drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

A FPGA-based temporary data acquisition system comprises an FPGA controller module, a temperature sensor, an angle sensor, a Beidou positioning module, an airborne terminal, an SM5852 air pressure acquisition module, a conditioning circuit module, an IO port control module, an external crystal oscillator module, a power driving module, a valve motor, a valve, a communication module, a photoelectric coupler, a current-voltage detection module, a DC/DC conversion module and a power supply module, wherein the FPGA controller module, the temperature sensor, the angle sensor, the Beidou positioning module, the airborne terminal, the SM5852 air pressure acquisition module, the conditioning circuit module, the IO port; the temperature sensor, the angle sensor, the Beidou positioning module, the IO port control module, the airborne terminal, the external crystal oscillator module and the communication module are respectively connected with the FPGA controller module; the SM5852 air pressure acquisition module is connected with the FPGA controller module through a conditioning circuit module, the valve is connected with the FPGA controller module through a photoelectric coupler, and the FPGA controller module is connected with a valve motor through a power driving module; and the power supply module is connected with the FPGA controller module through the current and voltage detection module and the DC/DC conversion module respectively.

The utility model discloses face empty data acquisition system has mainly included minimum system module, sensor module, UART serial port communication module and the control module who uses FPGA as the controller. As shown in fig. 1, the minimal system is a peripheral circuit that maintains the normal operation of the FPGA controller; the sensor module is used for collecting and conditioning signals such as temperature, angle, current and voltage, and the like, and the signals are divided into main board signals and slave board signals due to redundancy of hardware; the UART serial port communication module comprises 2 RS232 serial ports (connected with the Beidou positioning module) and 2 RS422 serial ports (connected with the airborne terminal); the control module mainly comprises a valve control module and a temperature control module, and the temperature control module is used for controlling the heating resistor to maintain normal operation of components on the circuit board.

As a preferred embodiment of the present invention: a differential bridge circuit, an amplifying and filtering circuit and an AD conversion module are arranged between the temperature sensor and the FPGA controller module; the temperature sensor is connected with the FPGA controller module through the differential bridge circuit, the amplifying and filtering circuit and the AD conversion module in sequence.

The PT100 temperature sensor is connected to a differential circuit to measure differential voltage, the voltage signal is shaped and conditioned, a digital value is obtained by an analog-to-digital conversion chip and is temporarily stored in a memory in an FPGA, a filter circuit adopts resistance-capacitance filtering, an instrumentation amplifier INA333 of TI company is adopted by the instrumentation amplifier, the amplifier has the characteristics of low power consumption and high precision, the AD conversion chip adopts T L C25 2543IN of 5V power supply voltage, 11 external analog signals are allowed to be input in parallel, and serial ports output conversion data and have the resolution of 12 bits.

As a preferred embodiment of the present invention: the power module includes a main power source and a battery.

As a preferred embodiment of the present invention: the FPGA controller module selects EP4CE22F1717 of Cyclone IV E series of Altera company as the controller of the acquisition system.

The system adopts an SM5852 series air pressure sensor of an SMI company to acquire air pressure signals, the working temperature of the SM5852 sensor is-40-125 ℃, the harsh environment near the air can be met, a temperature compensation algorithm is arranged in a chip, accurate measurement of air pressure is realized, the SM5852-003 sensor is adopted, the measurable pressure range of the SM5852-003 sensor is 0-0.3 PSI (stems contained Square), the air pressure sensor can output digital signals and analog signals, in order to enable the system to be simple in design and high in signal acquisition accuracy, the digital signals of the sensor are directly acquired, the digital signals are transmitted through an IIC protocol, a controller of voltage and the sensor are connected together by utilizing a 74L VC4245 level conversion chip, the 5V digital signals are converted into 3.3V digital signals, and meanwhile, the control module is protected.

As a preferred embodiment of the present invention: the utility model discloses a FPGA controller module is placed on data acquisition system's platform, and main two types have with ground command station communication mutual information: one is to send data information collected by the collector, and the other is to receive the instruction information of the ground command system. In order to ensure the data safety and the reliability of an acquisition system, the communication module is designed in a redundant mode. The system is connected with an airborne terminal through two RS422 interfaces, and the airborne terminal exchanges information with a ground command station through wireless communication. In addition, the system is also connected with a Beidou positioning module through two RS232 interfaces and is contacted with a ground command station through Beidou positioning satellite service. Meanwhile, the positioning information of the collector is transmitted to the ground together. The RS422 interface chip is ADI ADM2587E, and the RS232 interface chip is ADI ADM 3251E. The two RS422 interfaces are divided into a mainboard serial port and a slave board serial port, the mainboard serial port processes data information related to the mainboard, the slave board serial port processes data information related to the slave board, and the FPGA controller module is connected with the airborne terminal through the two RS422 interfaces.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Above embodiment only is for explaining the utility model discloses a technical thought can not be injectd with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any change of doing on technical scheme basis all falls into the utility model discloses within the protection scope. Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. The utility model provides a face empty data acquisition system based on FPGA which characterized in that: the intelligent control system comprises an FPGA controller module, a temperature sensor, an angle sensor, a Beidou positioning module, an airborne terminal, an SM5852 air pressure acquisition module, a conditioning circuit module, an IO port control module, an external crystal oscillator module, a power driving module, a valve motor, a valve, a communication module, a photoelectric coupler, a current and voltage detection module, a DC/DC conversion module and a power supply module; the temperature sensor, the angle sensor, the Beidou positioning module, the IO port control module, the airborne terminal, the external crystal oscillator module and the communication module are respectively connected with the FPGA controller module; the SM5852 air pressure acquisition module is connected with the FPGA controller module through a conditioning circuit module, the valve is connected with the FPGA controller module through a photoelectric coupler, and the FPGA controller module is connected with a valve motor through a power driving module; and the power supply module is connected with the FPGA controller module through the current and voltage detection module and the DC/DC conversion module respectively.

2. The FPGA-based temporary air data acquisition system according to claim 1, characterized in that: a differential bridge circuit, an amplifying and filtering circuit and an AD conversion module are arranged between the temperature sensor and the FPGA controller module; the temperature sensor is connected with the FPGA controller module through the differential bridge circuit, the amplifying and filtering circuit and the AD conversion module in sequence.

3. The FPGA-based temporary air data acquisition system according to claim 1, characterized in that: the power module includes a main power source and a battery.

4. The FPGA-based temporary air data acquisition system according to claim 1, characterized in that: the FPGA controller module selects EP4CE22F1717 of Cyclone IV E series of Altera company as the controller of the acquisition system.

5. The FPGA-based temporary air data acquisition system according to claim 1, characterized in that: the temperature sensor adopts a PT100 temperature sensor.

6. The FPGA-based temporary air data acquisition system according to claim 1, characterized in that: and the FPGA controller module is connected with the airborne terminal through two RS422 interfaces.

7. The FPGA-based temporary air data acquisition system according to claim 1, characterized in that: the FPGA controller module is connected with the Beidou positioning module through two RS232 interfaces.

8. The FPGA-based temporary air data acquisition system according to claim 6, characterized in that: the chip of the RS422 interface is ADI ADM 2587E.

9. The FPGA-based temporary air data acquisition system according to claim 7, characterized in that: the chip of the RS232 interface adopts ADM3251E of ADI company.