CN105488984A - System for wireless testing of wind speed and wind pressure of large drying column - Google Patents
System for wireless testing of wind speed and wind pressure of large drying column Download PDFInfo
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- CN105488984A CN105488984A CN201510964135.4A CN201510964135A CN105488984A CN 105488984 A CN105488984 A CN 105488984A CN 201510964135 A CN201510964135 A CN 201510964135A CN 105488984 A CN105488984 A CN 105488984A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The invention relates to a system for wireless testing of the wind speed and the wind pressure of a large drying column. The whole structure of the system has three parts, namely the information node, the communication node and the testing node. Specifically, the system comprises an upper PC, a data acquisition device, a signal amplification device, a signal filtration device, a signal sampling device, a high-speed digital signal processing device, a wireless transmission device and a high-speed data transmission interface part of the upper PC. Data acquired by the data acquisition device is transmitted to the signal amplification device, the signal filtration device, the signal sampling device, the high-speed digital signal processing device and the wireless transmission device in sequence, and then to the upper PC through the high-speed data transmission interface part. The wireless link data transmission technology is adopted, wind speed and wind pressure data acquisition and processing are integrated, real-time measurement and display of wind speed and wind pressure data can be achieved, and remote wind speed and wind pressure measurement is facilitated.
Description
Technical field
The present invention relates to a kind of large-scale drying tower wind speed and pressure wireless test macro.
Background technology
Large-scale drying tower is mainly used in the drying work before grain warehouse-in.Grain heat-drying is the key link in grain-production process, also be the important component part realizing grain-production entire mechanization, grain drying machineryization technology take machinery as Main Means, adopt corresponding technique and technical measures, control temperature, humidity, wind speed, blast etc. artificially, under the prerequisite not damaging grain quality, reduce grain moisture content, make it reach the dry technology of national security stock standard.Current grain drying tower is in many aspects as there is technical renovation in (physical construction, energy-conservation power supply), but the newly-built grain drying tower overwhelming majority is low-level duplicate construction, the grain drying tower of application new and advanced test technology is still little, and the actual performance of existing drying tower exhaust outlet arrangements for speed regulation is poor, lack accurate wind speed and pressure parameter detecting and feedback, make dry grain moisture content unevenness out very large, have a strong impact on the stability of quality after grain heat-drying.
Summary of the invention
The technical problem to be solved in the present invention is the above-mentioned defect how overcoming prior art, provides a kind of large-scale drying tower wind speed and pressure wireless test macro.
For solving the problems of the technologies described above, this large-scale drying tower wind speed and pressure wireless test macro one-piece construction is divided into three parts, i.e. information node, communication node, test node; Information node comprises each sensor and peripheral circuit thereof in drying tower; Communication node comprises data transmitting, receiving end; Test node comprises host computer and data store end.Specifically, this system comprises host computer PC, and it also comprises data collector, signal amplifying apparatus, signal filtering device, signal sampling device, high-speed digital video camera device, the high speed data transmission interface part of radio transmitting device and host computer PC, described data collector comprises thermojunction type air velocity transducer, differential pressure type wind pressure sensor and hot-wire array sensor, described signal amplifying apparatus is AD8544 amplifier, described signal sampling device is 12 bit serial analog to digital converter TLC2543, described high-speed digital video camera device comprises main control chip EPM7128SLC-84, and described radio transmitting device comprises wireless transport module transmitter, wireless transport module receiver, described thermojunction type air velocity transducer, after differential pressure type wind pressure sensor and hot-wire array sensor image data, be transferred to AD8544 amplifier successively, signal filtering device, analog to digital converter TLC2543, main control chip EPM7128SLC-84, wireless transport module transmitter, wireless transport module receiver, then pass through high speed data transmission interface part to host computer PC, described main control chip EPM7128SLC-84 produces 5V voltage by power supply voltage stabilizing chip L7805ABD2T and powers.Design like this, signal amplifying apparatus nurses one's health with the requirement of satisfied sampling to input signal, signal filtering device is that anti-stop signal produces " aliasing ", signal sampling device has been the digitizing of simulating signal, high-speed digital video camera device completes various algorithm on the basis setting up accidental resonance model, be the real-time meeting input with the high speed data transmission interface of principal computer, the data of MCU process are passed to computing machine to be further processed, wherein data acquisition and processing (DAP) and wireless transport module are cores, sensor is first utilized to gather wind speed and blast, again the signal of sensor collection is processed, and the data handled well are sent to main control chip EPM7128SLC-84, main control chip can send the data to wireless transport module by I/O mode, and wireless transport module finally sends the data to PC end, concrete, thermojunction type air velocity transducer, differential pressure type wind pressure sensor and its measuring wind of hot-wire array sensor and wind pressure signal, then AD8544 amplifier is utilized to amplify the wind speed measured and wind pressure signal, recycle 12 bit serial analog to digital converter TLC2543 and convert simulating signal to digital signal, the digital signal be converted to can be transferred to main control chip EPM7128SLC-84, after main control chip EPM7128SLC-84 receives appeal digital signal, can control SI4432 and MAX485 be that the data wireless transmission circuit of core sends appeal digital signal to host computer, finally can see the wind speed that sensor measurement arrives and blast parameter on host computer.
As optimization, this system software part comprises monitoring software, executive software, wherein said monitoring software is the core of whole control system, be used for coordinating the relation of each execution module and operator specially, performed software state for complete various substantial function as measured, calculating, display, communication.
As optimization, this system wireless transmission program flow process described is, after completing initialization, configuration register writes corresponding initialization RF control word, then the register 3eh by configuring SI4432 arranges the length of bag, register 7fh is write continuously by SPI, in TXFIFO, write needs the data sent, then " send and interrupt allowing " mark is opened, other interruptions are all forbidden, when there being Packet Generation complete, pin NIRQ can be dragged down to produce a low level thus notice MCU packet is sent, complete interrupt enable after, enable sending function, data start to send, wait for that NIRQ pin makes level drag down because interrupting producing, read interruption status when NIRQ pin becomes low and draw high NIRQ, otherwise continue to wait for, if data send successfully, pilot lamp can brighten, one secondary data sends successfully, enter datacycle next time and send state.
As optimization, this system wireless reception program flow process is, after program completes initialization, configuration register writes corresponding initialization RF control word, from RXFIFO, the data received are read by access register 7fh, after corresponding control word sets, if pin NIRO becomes low level, then represent that SI4432 is ready to receive data, after completing above-mentioned initial configuration, read packet length information by register 4bh, then open " effectively wrapping interruption " and " synchronization character detects and interrupts ", other interruptions are all forbidden; Whether effectively pin NIRQ is used for detecting bag and is detected, if pin NIRQ becomes low level, then indicates that effective packet is detected; Native system 0x2DD4 is as the identity code of synchronous mode, and receiver module carrys out synchronous receiving data by detecting this synchronization character; Finally, enable receiving function, start receive data; Waiting for that NIRQ makes level drag down because interrupting producing, reading interrupt flag bit reset NIRQ, making it restore to initial high level state to prepare the detection of down trigger next time; Read the data in RXFIFO by SPI, enter data receiving state next time afterwards.
Beneficial effect of the present invention comprises following several respects: EPM7128SLC-84 introduces in drying tower wind speed and pressure wireless test macro as main control chip with the data communication that the data summarization end that SI4432 and MAX485 is core realizes multichannel wind speed and pressure collector and computer terminal by (1).(2) volume is little, easy to carry: the area ratio business card of pcb board is bigger, the encapsulation that the many employings of chip are SMD, whole module and peripheral components volume all very little.(3) low in energy consumption: the process chip and the peripheral chip that have selected low-power consumption.(4) precision is high: in order to improve the accuracy of signals collecting, have employed the high-precision adc of 12, improve the precision of test macro.In sum, integrated and mass production is convenient in the present invention; Reduce complicacy and the frequency of pick up calibration; The multifunction of measuring system, systematization and intellectuality can also be realized, thus there is significantly actively beneficial effect.
The present invention's large-scale drying tower wind speed and pressure wireless test system structure is simple, programmed process is simple, volume is little, lightweight, easy to use, it adopts data wireless links transmission technology, and the data sampling and processing of wind speed and pressure is combined together, the real-time measurement of wind speed and pressure data and reality can be completed, be convenient to long-range wind speed and pressure pressure measurement.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention's large-scale drying tower wind speed and pressure wireless test macro is described further:
Fig. 1 is the mutual relationship figure between each node of this large-scale drying tower wind speed and pressure wireless test macro;
Fig. 2 is the functional line block diagram of this large-scale drying tower wind speed and pressure wireless test macro;
Fig. 3 is the hardware elementary diagram of this large-scale drying tower wind speed and pressure wireless test macro;
Fig. 4 is the work general flow chart of this large-scale drying tower wind speed and pressure wireless test macro;
Fig. 5 is the wireless transmit program flow diagram of this large-scale drying tower wind speed and pressure wireless test macro;
Fig. 6 is the wireless receiving program flow diagram of this large-scale drying tower wind speed and pressure wireless test macro.
Embodiment
As Figure 1-3, this large-scale drying tower wind speed and pressure wireless test macro one-piece construction is divided into three parts, i.e. information node, communication node, test node; Information node comprises each sensor and peripheral circuit thereof in drying tower; Communication node comprises data transmitting, receiving end; Test node comprises host computer and data store end.Specifically, this system comprises host computer PC, and it also comprises data collector, signal amplifying apparatus, signal filtering device, signal sampling device, high-speed digital video camera device, the high speed data transmission interface part of radio transmitting device and host computer PC, described data collector comprises thermojunction type air velocity transducer, differential pressure type wind pressure sensor and hot-wire array sensor, described signal amplifying apparatus is AD8544 amplifier, described signal sampling device is 12 bit serial analog to digital converter TLC2543, described high-speed digital video camera device comprises main control chip EPM7128SLC-84, and described radio transmitting device comprises wireless transport module transmitter, wireless transport module receiver, described thermojunction type air velocity transducer, after differential pressure type wind pressure sensor and hot-wire array sensor image data, be transferred to AD8544 amplifier successively, signal filtering device, analog to digital converter TLC2543, main control chip EPM7128SLC-84, wireless transport module transmitter, wireless transport module receiver, then pass through high speed data transmission interface part to host computer PC, described main control chip EPM7128SLC-84 produces 5V voltage by power supply voltage stabilizing chip L7805ABD2T and powers.Design like this, signal amplifying apparatus nurses one's health with the requirement of satisfied sampling to input signal, signal filtering device is that anti-stop signal produces " aliasing ", signal sampling device has been the digitizing of simulating signal, high-speed digital video camera device completes various algorithm on the basis setting up accidental resonance model, be the real-time meeting input with the high speed data transmission interface of principal computer, the data of MCU process are passed to computing machine to be further processed, wherein data acquisition and processing (DAP) and wireless transport module are cores, sensor is first utilized to gather wind speed and blast, again the signal of sensor collection is processed, and the data handled well are sent to main control chip EPM7128SLC-84, main control chip can send the data to wireless transport module by I/O mode, and wireless transport module finally sends the data to PC end, concrete, thermojunction type air velocity transducer, differential pressure type wind pressure sensor and its measuring wind of hot-wire array sensor and wind pressure signal, then AD8544 amplifier is utilized to amplify the wind speed measured and wind pressure signal, recycle 12 bit serial analog to digital converter TLC2543 and convert simulating signal to digital signal, the digital signal be converted to can be transferred to main control chip EPM7128SLC-84, after main control chip EPM7128SLC-84 receives appeal digital signal, can control SI4432 and MAX485 be that the data wireless transmission circuit of core sends appeal digital signal to host computer, finally can see the wind speed that sensor measurement arrives and blast parameter on host computer.
As shown in Figure 4, this system software part comprises monitoring software, executive software, wherein said monitoring software is the core of whole control system, be used for coordinating the relation of each execution module and operator specially, performed software state for complete various substantial function as measured, calculating, display, communication.
As shown in Figure 5, this system wireless transmission program flow process described is, after completing initialization, configuration register writes corresponding initialization RF control word, then the register 3eh by configuring SI4432 arranges the length of bag, register 7fh is write continuously by SPI, in TXFIFO, write needs the data sent, then " send and interrupt allowing " mark is opened, other interruptions are all forbidden, when there being Packet Generation complete, pin NIRQ can be dragged down to produce a low level thus notice MCU packet is sent, complete interrupt enable after, enable sending function, data start to send, wait for that NIRQ pin makes level drag down because interrupting producing, read interruption status when NIRQ pin becomes low and draw high NIRQ, otherwise continue to wait for, if data send successfully, pilot lamp can brighten, one secondary data sends successfully, enter datacycle next time and send state.
As shown in Figure 6, this system wireless reception program flow process is, after program completes initialization, configuration register writes corresponding initialization RF control word, from RXFIFO, the data received are read by access register 7fh, after corresponding control word sets, if pin NIRO becomes low level, then represent that SI4432 is ready to receive data, after completing above-mentioned initial configuration, read packet length information by register 4bh, then open " effectively wrapping interruption " and " synchronization character detects and interrupts ", other interruptions are all forbidden; Whether effectively pin NIRQ is used for detecting bag and is detected, if pin NIRQ becomes low level, then indicates that effective packet is detected; Native system 0x2DD4 is as the identity code of synchronous mode, and receiver module carrys out synchronous receiving data by detecting this synchronization character; Finally, enable receiving function, start receive data; Waiting for that NIRQ makes level drag down because interrupting producing, reading interrupt flag bit reset NIRQ, making it restore to initial high level state to prepare the detection of down trigger next time; Read the data in RXFIFO by SPI, enter data receiving state next time afterwards.
Above-mentioned embodiment is intended to illustrate that the present invention can be professional and technical personnel in the field and realizes or use; modifying to above-mentioned embodiment will be apparent for those skilled in the art; therefore the present invention includes but be not limited to above-mentioned embodiment; any these claims or instructions of meeting describes; meet and principle disclosed herein and novelty, the method for inventive features, technique, product, all fall within protection scope of the present invention.
Claims (4)
1. a large-scale drying tower wind speed and pressure wireless test macro, comprises host computer PC, it is characterized in that: this system also comprises data collector, signal amplifying apparatus, signal filtering device, signal sampling device, high-speed digital video camera device, the high speed data transmission interface part of radio transmitting device and host computer PC, described data collector comprises thermojunction type air velocity transducer, differential pressure type wind pressure sensor and hot-wire array sensor, described signal amplifying apparatus is AD8544 amplifier, described signal sampling device is 12 bit serial analog to digital converter TLC2543, described high-speed digital video camera device comprises main control chip EPM7128SLC-84, and described radio transmitting device comprises wireless transport module transmitter, wireless transport module receiver, described thermojunction type air velocity transducer, after differential pressure type wind pressure sensor and hot-wire array sensor image data, be transferred to AD8544 amplifier successively, signal filtering device, analog to digital converter TLC2543, main control chip EPM7128SLC-84, wireless transport module transmitter, wireless transport module receiver, then pass through high speed data transmission interface part to host computer PC, described main control chip EPM7128SLC-84 produces 5V voltage by power supply voltage stabilizing chip L7805ABD2T and powers.
2. large-scale drying tower wind speed and pressure wireless test macro according to claim 1, it is characterized in that: this system software part comprises monitoring software, executive software, wherein said monitoring software is the core of whole control system, be used for coordinating the relation of each execution module and operator specially, performed software state for complete various substantial function as measured, calculating, display, communication.
3. large-scale drying tower wind speed and pressure wireless test macro according to claim 1, it is characterized in that: this system wireless transmission program flow process described is, after completing initialization, configuration register writes corresponding initialization RF control word, then the register 3eh by configuring SI4432 arranges the length of bag, register 7fh is write continuously by SPI, in TXFIFO, write needs the data sent, then " send and interrupt allowing " mark is opened, other interruptions are all forbidden, when there being Packet Generation complete, pin NIRQ can be dragged down to produce a low level thus notice MCU packet is sent, complete interrupt enable after, enable sending function, data start to send, wait for that NIRQ pin makes level drag down because interrupting producing, read interruption status when NIRQ pin becomes low and draw high NIRQ, otherwise continue to wait for, if data send successfully, pilot lamp can brighten, one secondary data sends successfully, enter datacycle next time and send state.
4. large-scale drying tower wind speed and pressure wireless test macro according to claim 1, it is characterized in that: this system wireless reception program flow process is, after program completes initialization, configuration register writes corresponding initialization RF control word, from RXFIFO, the data received are read by access register 7fh, after corresponding control word sets, if pin NIRO becomes low level, then represent that SI4432 is ready to receive data, after completing above-mentioned initial configuration, packet length information is read by register 4bh, then open " effectively wrapping interruption " and " synchronization character detects and interrupts ", other interruptions are all forbidden, whether effectively pin NIRQ is used for detecting bag and is detected, if pin NIRQ becomes low level, then indicates that effective packet is detected, native system 0x2DD4 is as the identity code of synchronous mode, and receiver module carrys out synchronous receiving data by detecting this synchronization character, finally, enable receiving function, start receive data, waiting for that NIRQ makes level drag down because interrupting producing, reading interrupt flag bit reset NIRQ, making it restore to initial high level state to prepare the detection of down trigger next time, read the data in RXFIFO by SPI, enter data receiving state next time afterwards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510964135.4A CN105488984A (en) | 2015-12-22 | 2015-12-22 | System for wireless testing of wind speed and wind pressure of large drying column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510964135.4A CN105488984A (en) | 2015-12-22 | 2015-12-22 | System for wireless testing of wind speed and wind pressure of large drying column |
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| CN105488984A true CN105488984A (en) | 2016-04-13 |
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| CN201510964135.4A Pending CN105488984A (en) | 2015-12-22 | 2015-12-22 | System for wireless testing of wind speed and wind pressure of large drying column |
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2015
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Application publication date: 20160413 |
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