CN103414481A - Electronic integration system of multipurpose data acquisition transmitter and data processing method and device - Google Patents
Electronic integration system of multipurpose data acquisition transmitter and data processing method and device Download PDFInfo
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- CN103414481A CN103414481A CN2013103115430A CN201310311543A CN103414481A CN 103414481 A CN103414481 A CN 103414481A CN 2013103115430 A CN2013103115430 A CN 2013103115430A CN 201310311543 A CN201310311543 A CN 201310311543A CN 103414481 A CN103414481 A CN 103414481A
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Abstract
The invention discloses an electronic integration system of a multipurpose data acquisition transmitter and a data processing method and device. The electronic integration system of the multipurpose data acquisition transmitter comprises a high-stability clock source module, an FPGA, a DDS chip, a UHF power amplification module, a GPRS/CDMA DTU module, an antenna module, a power module and a peripheral interface circuit module. After a related spread spectrum algorithm is carried out on data sent by an external sensor inside the FPGA, one path of the data is sent to the DDS chip, is sent to a signal amplification module after forming a modulated carrier frequency through the DDS chip, and is sent out after power amplification is carried out through the UHF power amplification module. The other path of the data is sent to the GPRS/CDMA DTU module, conversion processing is carried out on the data, and then data is sent out. Due to the fact that new design concepts of a standardized platform, modularized components and a universal interface are adopted, the electronic integration system of the multipurpose data acquisition transmitter has the advantages of being good in anti-interference capacity, small in size, light in weight, low in cost, short in lead time, high in performance, high in openness of the system structure and fully programmable, and facilitating follow-up upgrade of software and hardware.
Description
Technical field
The present invention relates to the radio transmitter technical field of electronic equipment, relate in particular to electronics integrated system and data processing method thereof that a kind of multi-purpose data gathers transmitter.
Background technology
Satellite data is collected the repeater satellite advantage such as covering on a large scale over the ground, can realize quick, hidden, round-the-clock Data Collection and transmission are carried out in the whole world, have that information wide coverage, transmission timeliness are fast, the quality high, can be widely used in all multipurposes that the ground communication means are difficult to realize.As be applied to meteorology, the hydrology, environment, agricultural, combat a natural disaster collection and the distribution of the important informations such as mitigation, have higher economic benefit.
Traditional data acquisition platform (DCP) is generally the signal that the transducer collection is come to be nursed one's health to rear employing wireless mode send in satellite or public network passage.Traditional weather satellite data acquisition platform is to adopt uhf band point time-devision system working method frequently.Although this method for designing can reach user's requirement to a certain extent, shortcoming is exactly that circuit complexity, communication efficiency are poor, poor anti jamming capability, service time are very restricted, equipment cost is very high, the lead time is long.
Location of the present invention is not direct and the existing network technology forms competition, but, by exerting advantages of oneself, can use with the Internet or public mobile communications network crossing parallel, and the not enough zone of public network covering is effectively supplemented or backups each other.The present invention, by adopting new signal disposal system, has improved the antijamming capability of system, can require its less transmitting power to transmitter.The present invention be take the Meteorological Field use and is main application background, but by adopting different transducers and the program fine setting can easily should be in other field, as industries such as agricultural, water conservancy, reservoir, island, petroleum gas transmission.
Summary of the invention
The object of the present invention is to provide a kind of electronics integrated system that multi-purpose data gathers transmitter that has, adopt advanced Software Radio Design method and spread spectrum technic, thus the specification requirement that meet to reduce interface and power consumption, raising system rejection to disturbance ability, reduces costs and improve reliability.
For addressing the above problem, the present invention proposes a kind of electronics integrated system that multi-purpose data gathers transmitter that has, and it comprises:
The high stability clock source module, for generation of the required code element clock of modulation signal and the needed carrier frequency signaling of up-conversion;
The fpga chip module, carry out the spread spectrum algorithm for the data to being collected by external sensor, to input/output signal format conversion and processing;
The DDS chip module, for the up-conversion to base-band spread-spectrum signal;
The UHF power amplifier module, for the power amplification to DDS chip module output signal;
GPRS/CDMA DTU module, carry out specific transparent data processing and transmission for the collection signal to after the FPGA resume module;
Anneta module, comprise UHF Anneta module and GPRS/CDMA Anneta module, for externally carrying out the radiation of power signal;
Power module, comprise solar panels, power-supply controller of electric and batteries, for whole system being provided to electric power and power management;
The data communication interface module, nurse one's health and provide interface for the I/O of data traffic signals.
Wherein, the directional diagram of described UHF Anneta module need to be directed upwards towards satellite direction, and the directional diagram of described GPRS/CDMA Anneta module be take the horizontal plane radiation as main.
Wherein, it be take the fpga chip module and is core, the data that external sensor is brought are after the fpga chip inside modules completes relevant spread spectrum algorithm, one tunnel is sent to the DDS chip module, after the modulation of DDS module, send into the signal amplification module, after the power amplification of UHF power amplifier module, deliver to the UHF antenna, another road is delivered to GPRS/CDMA DTU module and is carried out delivering to the GPRS/CDMA antenna after conversion process.
The invention allows for a kind of data processing method that gathers the electronics integrated system of transmitter based on above-mentioned multi-purpose data, it comprises the following steps:
Step 1, system power on, configuration-system clock, configuration D/A chip;
Step 2, judge whether to collect baseband signal; Judge whether to produce coefficient and be 211 m sequence; Judge whether to produce coefficient and be 361 sequence; Judge whether to have produced carrier signal;
If step 3 judgement collects baseband signal, the signal of collection is carried out to spread processing; If judgement generation coefficient is 211 m sequence, this sequence is carried out to mould 2 computation systems and process, and judge that whether the data of carrying out after mould 2 computation systems are processed have produced the Gold code, if judgement has produced the Gold code, carry out spread processing; If judgement generation coefficient is 361 sequence, this sequence is carried out mould 2 computation systems processing, and judges that whether the data of carrying out after mould 2 computation systems are processed have produced the Gold code, if judgement has produced the Gold code, carry out spread processing; If judgement has produced carrier signal, carry out step 4;
Step 4, the data that above step is obtained are carried out the BPSK modulation treatment;
Step 5, the data after the BPSK modulation treatment are carried out to the Digital Up Convert processing;
Step 6, the output of the data after processing.
The present invention is the advanced electronics integrated system of micro-nano satellite, adopts advanced spread spectrum technic, by the Software Radio Design technology, completes the modulation treatment of data-signal, can significantly increase the antijamming capability of system link.The anti-interference problem of traditional uhf band communication system is extremely to be difficult to the technical problem overcome.
Multi-purpose data of the present invention gathers the electronics integrated system of transmitter, adopt standardization, modularization and General design theory, both can be applied to by public network (optical fiber, GPRS/CDMA) transmission data, also can be applied to utilize the meteorological satellite transponder channel transmission data of China, for field data collection, combat a natural disaster the aspects such as the mitigation prospect that is widely used.
Compared with prior art, the present invention program forms simply, the modulating frequency precision is high, the modulation signal quality is good, interface is simple, power consumption minimizings, the raising of system rejection to disturbance ability, cost and reliability raising, adopt standardized platform, modular member and the new design concept of general-purpose interface, make that complete machine has that volume is little, lightness, cost is low, the lead time is short and high performance characteristics, the system configuration opening is high, comprehensively able to programme, follow-up software and hardware upgrading is convenient.This technology has sector application prospect widely, has reached following beneficial effect:
(1) this integrated system has been broken traditional data acquisition platform (DCP), this DCP and satellite communication, with traditional Meteorological Automatic Station, it only adopts ground public network communication network, the boundary of using respectively, realize both uniting two into one, and built a kind of multi-purpose data collection transmitter module and standardized platform;
(2) this integrated system has met that data are gathered to the acquisition interface of transmitter is abundant, and it comprises RS422, RS232, USB, Transistor-Transistor Logic level interface etc., as shown in Figure 1, cost is low, volume is little, the system rejection to disturbance ability is strong, the lead time is short requirement;
(3) this integrated system, owing to adopting advanced microelectronics and the integrated communication technology and Software Radio Design technology, makes this multi-purpose data gather transmitter and has obvious advance.
The accompanying drawing explanation
Fig. 1 is the have schematic block circuit diagram that multi-purpose data gather transmitter electronics integrated system consistent with the embodiment of the present invention;
Fig. 2 is the generating structure block diagram of the Gold code consistent with the embodiment of the present invention;
Fig. 3 is the Software for Design flow chart of the fpga chip module consistent with the embodiment of the present invention;
Fig. 4 gathers transmitter electronics integrating device block diagram for the multi-purpose data that has consistent with the embodiment of the present invention.
Embodiment
Below in conjunction with the electronics integrated system of the drawings and specific embodiments to a kind of multi-purpose data collection transmitter of the present invention's proposition, be described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only for convenient, the purpose of the aid illustration embodiment of the present invention lucidly.
The invention provides the electronics integrated system that a kind of multi-purpose data gathers transmitter, this system comprises high stability clock source module, FPGA, DDS chip, UHF power amplifier module, GPRS/CDMA DTU module, Anneta module, power module and peripheral interface circuit module.The electronics integrated system that a kind of multi-purpose data provided by the invention gathers transmitter adopts advanced microelectronics and the integrated communication technology and Software Radio Design technology, thereby meets the specification requirement that reduces interface and power consumption, raising system rejection to disturbance ability, reduces costs and improve reliability.
Please refer to Fig. 1, Fig. 1 is the schematic block circuit diagram that a kind of multi-purpose data provided by the invention gathers the electronics integrated system of transmitter.As shown in Figure 1, a kind of electronics integrated system of multi-purpose data collection transmitter comprises:
Data communication interface module 101, enough external interfaces are nursed one's health and are provided in the input and output that complete data traffic signals;
Fpga chip module 102, complete to the data of being brought by external sensor carry out the spread spectrum algorithm, to the input/output signal format conversion with corresponding process, radio frequency power amplification modules is carried out to power control.Have the characteristics such as performance is high, antijamming capability is strong, low in energy consumption, volume is little, peripheral hardware aboundresources, also this transmitter is needed just for these characteristics, therefore has extraordinary application prospect.
High stability clock source module 103, it comprises crystal oscillator and peripheral circuit thereof, for generation of modulation signal required code clock and the needed carrier frequency of up-conversion;
GPRS/CDMA DTU module 105, complete the GPRS/CDMA transparent data of collection signal processed and transmission.Adopt the design concepts such as standardized platform, modular member and general-purpose interface, shorten the lead time.
UHF power amplifier module 106, be used for power amplification to the DDS output signal, and need can adjust the power output size within the specific limits according to system.Adopt software radio to realize that hardware platform is unitized, effectively reduced the volume and weight of satellite system, simplified satellite interface.
Anneta module 107, be comprised of UHF antenna and GPRS/CDMA antenna second mate antenna, completes the radiation of externally carrying out power signal.The directional diagram of UHF antenna need to be directed upwards towards satellite direction, and the directional diagram of GPRS/CDMA antenna be take the horizontal plane radiation as main.
By data communication interface module 101, receive the input data of ground transaucer, the conditioning of settling signal, can provide RS422, RS232 and USB standard interface, and the Transistor-Transistor Logic level interface.High stability clock source module 103 is for generation of modulation signal required code clock and the needed carrier frequency of up-conversion; The data that one routing data traffic interface module 101 is brought are after fpga chip 102 inside complete relevant spread spectrum algorithm, be sent to DDS chip 104, after DDS chip 104 forms modulated carrier frequency, be sent to hyperfrequency UHF signal amplification module 106, after power amplification, pass out to Anneta module 107 and launch.The signal of another route fpga chip 102 outputs is delivered to GPRS/CDMA DTU module 105, completes after the GPRS/CDMA transparent data of collection signal is processed to pass out to Anneta module 107 and launch.The power supply of all modules is provided by power module 108, and power module 108 is comprised of solar panels, power-supply controller of electric, batteries, completes power supply and the Charge Management of complete machine.
Native system has adopted the spread spectrum coding technology to improve the antijamming capability of uhf band channel.Frequency expansion sequence is a kind of pseudo random sequence, and desirable pseudo random sequence mainly should have following characteristic:
1) sharp-pointed autocorrelation performance is arranged;
2) have is zero their cross correlation everywhere;
3) abundant address code code character is arranged;
4) different code element number balances equate;
5) large as far as possible complexity;
6) have the frequency spectrum of approximate noise, namely approximate continuous is composed and is uniformly distributed.
Spreading code commonly used has the m sequence, Gold sequence etc., and its pluses and minuses are as follows:
M sequence advantage:
1) has an antijamming capability stronger;
2) good correlation properties;
3) easily produce.
M sequence shortcoming:
1) number of m sequence code is less, can not meet as address code quantity and want many requirements;
2) cross correlation between the m sequence of same length is good not.
The Gold sequence is to grow up on the basis of m sequence, has inherited the advantage of m sequence, also has the advantage of oneself:
1) number of code far surpasses the m sequence;
2) has sharp-pointed auto-correlation function;
3) cross-correlation function of Gold sequence, lower than the right cross-correlation function of former sequence preference, has three value their cross correlations.
Shortcoming: progression is higher, the more difficult realization of engineering.
Therefore, native system is selected balance Gold code, balance Gold code has good autocorrelation performance, better spectral characteristic, the balance of code and the inhibition degree of carrier wave have substantial connection in directly-enlarging system, the disequilibrium of code increases, and the carrier leak of directly-enlarging system increases, and will destroy confidentiality, the anti-interference anti-detection ability of spread spectrum system.Because this system data transmission rate is lower, so select 7 grades can satisfy the demands, feedback factor is respectively the m sequence that 211 and 361 proper polynomial forms, and corresponding primitive polynomial is:
f(x)＝1+x
3+x
7
g(x)＝1+x+x
2+x
3+x
7
In formula, x=1 or 0.
These two sequences meet the right definition of m sequence preference, preferably to referring in the m sequence sets, the absolute value of its cross-correlation maximum is less than or equal to a pair of m sequence of cross correlation value lower limit, its mould 2 is added and is balanced the Gold code, the block diagram of its realization such as Fig. 2, structure is simpler, easily realize, carrier wave suppresses to reach 21.04dB, and it is sharp-pointed that this Gold code has an auto-correlation function, cross-correlation function is approximately zero characteristic, meets the related request as spreading code.
The Software for Design of fpga chip module of the present invention is one of key technology difficult point.In the present invention, as shown in Figure 3, the data processing equipment block diagram as shown in Figure 4 for the Software for Design flow chart of fpga chip module.
A kind of data processing method that gathers the electronics integrated system of transmitter based on above-mentioned multi-purpose data, it comprises the following steps:
Step 1, system power on, configuration-system clock, configuration D/A chip;
Step 2, judge whether to collect baseband signal; Judge whether to produce coefficient and be 211 m sequence; Judge whether to produce coefficient and be 361 sequence; Judge whether to have produced carrier signal;
If step 3 judgement collects baseband signal, the signal of collection is carried out to spread processing; If judgement generation coefficient is 211 m sequence, this sequence is carried out to mould 2 computation systems and process, and judge that whether the data of carrying out after mould 2 computation systems are processed have produced the Gold code, if judgement has produced the Gold code, carry out spread processing; If judgement generation coefficient is 361 sequence, this sequence is carried out mould 2 computation systems processing, and judges that whether the data of carrying out after mould 2 computation systems are processed have produced the Gold code, if judgement has produced the Gold code, carry out spread processing; If judgement has produced carrier signal, carry out step 4;
Step 4, the data that above step is obtained are carried out the BPSK modulation treatment;
Step 5, the data after the BPSK modulation treatment are carried out to the Digital Up Convert algorithm process;
Step 6, the output of the data after processing.
A kind of data processing equipment based on above-mentioned data processing method, it comprises:
Configuration module, it powers in system, configuration-system clock, configuration D/A chip;
The baseband signal judge module, it judges whether to collect baseband signal, if judgement collects baseband signal, the signal of collection is carried out to spread processing;
211 m sequence judge module, it judges whether to produce coefficient is 211 m sequence, is 211 m sequence if judgement produces coefficient, this sequence is carried out to mould 2 computation systems and processes;
361 sequence judge module, it judges whether to produce coefficient is 361 sequence;
The carrier signal judge module, it judges whether to have produced carrier signal;
Mould 2 computation system processing modules, carry out mould 2 computation systems to sequence and process;
Whether the data that Gold code judge module, judgement carry out after mould 2 computation systems are processed have produced the Gold code;
The spread processing module, to baseband signal with produced the Gold coded signal and carry out spread processing;
BPSK modulation treatment module, its signal to spread processing module and the generation of carrier signal judge module is processed;
Up-converter module, its output signal to BPSK modulation treatment module is processed;
Signal output module, output are processed rear signal.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make the some improvements and modifications that can expect, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. one kind has the electronics integrated system that multi-purpose data gathers transmitter, and it comprises:
The high stability clock source module, for generation of the required code element clock of modulation signal and the needed carrier frequency signaling of up-conversion;
The fpga chip module, carry out the spread spectrum algorithm for the data to being collected by external sensor, to input/output signal format conversion and processing;
The DDS chip module, for the up-conversion to base-band spread-spectrum signal;
The UHF power amplifier module, for the power amplification to DDS chip module output signal;
GPRS/CDMA DTU module, carry out specific transparent data processing and transmission for the collection signal to after the FPGA resume module;
Anneta module, comprise UHF Anneta module and GPRS/CDMA Anneta module, for externally carrying out the radiation of power signal;
Power module, comprise solar panels, power-supply controller of electric and batteries, for whole system being provided to electric power and power management;
The data communication interface module, nurse one's health and provide interface for the I/O of data traffic signals.
2. have as claimed in claim 1 the electronics integrated system of multi-purpose data collection transmitter, it is characterized in that, the directional diagram of described UHF Anneta module need to be directed upwards towards satellite direction, and the directional diagram of described GPRS/CDMA Anneta module be take the horizontal plane radiation as main.
3. the electronics integrated system that has as claimed in claim 1 multi-purpose data collection transmitter, it is characterized in that, it be take the fpga chip module and is core, the data that external sensor is brought are after the fpga chip inside modules completes relevant spread spectrum algorithm, one tunnel is sent to the DDS chip module, after the modulation of DDS module, send into the signal amplification module, after the power amplification of UHF power amplifier module, deliver to the UHF antenna, another road is delivered to GPRS/CDMA DTU module and is carried out delivering to the GPRS/CDMA antenna after conversion process.
4. data processing method that gathers the electronics integrated system of transmitter based on the described multi-purpose data of claim 1, it comprises the following steps:
Step 1, system power on, configuration-system clock, configuration D/A chip;
Step 2, judge whether to collect baseband signal; Judge whether to produce coefficient and be 211 m sequence; Judge whether to produce coefficient and be 361 sequence; Judge whether to have produced carrier signal;
If step 3 judgement collects baseband signal, the signal of collection is carried out to spread processing; If judgement generation coefficient is 211 m sequence, this sequence is carried out to mould 2 computation systems and process, and judge that whether the data of carrying out after mould 2 computation systems are processed have produced the Gold code, if judgement has produced the Gold code, carry out spread processing; If judgement generation coefficient is 361 sequence, this sequence is carried out mould 2 computation systems processing, and judges that whether the data of carrying out after mould 2 computation systems are processed have produced the Gold code, if judgement has produced the Gold code, carry out spread processing; If judgement has produced carrier signal, carry out step 4;
Step 4, the data that above step is obtained are carried out the BPSK modulation treatment;
Step 5, the data after the BPSK modulation treatment are carried out to the Digital Up Convert algorithm process;
Step 6, the output of the data after processing.
5. data processing equipment, it comprises:
Configuration module, it powers in system, configuration-system clock, configuration D/A chip;
The baseband signal judge module, it judges whether to collect baseband signal, if judgement collects baseband signal, the signal of collection is carried out to spread processing;
211 m sequence judge module, it judges whether to produce coefficient is 211 m sequence, is 211 m sequence if judgement produces coefficient, this sequence is carried out to mould 2 computation systems and processes;
361 sequence judge module, it judges whether to produce coefficient is 361 sequence;
The carrier signal judge module, it judges whether to have produced carrier signal;
Mould 2 computation system processing modules, carry out mould 2 computation systems to sequence and process;
Whether the data that Gold code judge module, judgement carry out after mould 2 computation systems are processed have produced the Gold code;
The spread processing module, to baseband signal with produced the Gold coded signal and carry out spread processing;
BPSK modulation treatment module, its signal to spread processing module and the generation of carrier signal judge module is processed;
Up-converter module, its output signal to BPSK modulation treatment module is processed;
Signal output module, output are processed rear signal.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105243828A (en) * | 2015-10-09 | 2016-01-13 | 河海大学常州校区 | Remote control device based on ultrasonic communication and remote control method thereof |
| CN108120884A (en) * | 2017-12-21 | 2018-06-05 | 北京无线电计量测试研究所 | A kind of measuring device of Low phase noise frequency comb additional noise |
| CN109931932A (en) * | 2017-12-15 | 2019-06-25 | 湖南中部芯谷科技有限公司 | A kind of high-precise synchronization integrated navigation computer |
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| CN1526210A (en) * | 2001-05-10 | 2004-09-01 | �����ɷ� | Multi-mode satellite and terrestrial communication device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105243828A (en) * | 2015-10-09 | 2016-01-13 | 河海大学常州校区 | Remote control device based on ultrasonic communication and remote control method thereof |
| CN109931932A (en) * | 2017-12-15 | 2019-06-25 | 湖南中部芯谷科技有限公司 | A kind of high-precise synchronization integrated navigation computer |
| CN108120884A (en) * | 2017-12-21 | 2018-06-05 | 北京无线电计量测试研究所 | A kind of measuring device of Low phase noise frequency comb additional noise |
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Application publication date: 20131127 |