CN103279167B - Data acquisition integrated and intrinsic safety type mining computer - Google Patents
Data acquisition integrated and intrinsic safety type mining computer Download PDFInfo
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- CN103279167B CN103279167B CN201310145008.2A CN201310145008A CN103279167B CN 103279167 B CN103279167 B CN 103279167B CN 201310145008 A CN201310145008 A CN 201310145008A CN 103279167 B CN103279167 B CN 103279167B
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Abstract
The invention discloses a data acquisition integrated and intrinsic safety type mining computer which comprises a battery pack, a DC-DC module, an LED display screen, an industrial control board, a USB wireless WIFI module, a signal separation board, a signal conversion circuit, a mining intrinsic safety type earphone, an Ethernet signal interface, a mining intrinsic safety type USB flash disk, an RS 485/RS 232 signal interface and a mining intrinsic safety type keyboard. The data acquisition integrated and intrinsic safety type mining computer is characterized by further comprising an 'ia'-level intrinsic safety protective circuit, a touch board, a signal acquisition board, a mining sensor interface, a mining intrinsic safety type wired/wireless measurement-while-drilling device exploring tube and a communication-while-drilling board; the battery pack supplies power for the DC-DC module through the 'ia'-level intrinsic safety protective circuit, the DC-DC module supplies power for the LED display screen, the industrial control board, the signal separation board and the signal acquisition board, and a positive electrode and a negative electrode of each output end of the DC-DC module are separated from each other. According to the data acquisition integrated and intrinsic safety type mining computer, data are processed underground at a high speed and in real time, cost is low, functions are complete, and the computer can be widely applied to occasions such as coal mines.
Description
Technical field：
The present invention relates to mining computer, and in particular to data acquisition integration Mine-used I. S. Computer.
Technical background：
Many occasions need to use flame-proof type or I.S.computer, such as coal-winning machine, ventilating system, peace in coal production
Full monitoring and controlling system, portable instrumentation system etc..But, existing flame-proof type or Flameproof and intrinsically safe computer far can not also
Adapt to the diversified demand of coal industry field.Therefore, in addition to various flame proof computers are developed, it is necessary to suitable for underground coal mine
Dust-proof, shockproof, moistureproof, low-power consumption, portative Mine-used I. S. Computer are researched and developed.
At present, in Mine-used I. S. Computer, and mining wired and wireless drilling measuring system docking communication, at home
There is no；Computer uses " ia " protection class, is suitable for mine disaster relief environment, can be with wired mine disaster relief command device and ore deposit
Connected with disaster relief wireless commanding device, carry out the treatment of voice, video and environmental data and show, there is no at home；Using virtual
Instrument Design method, primary signal is gathered with capture card, and the function of instrument uses software design patterns, by after flame proof treatment with have
The mine sensors of coal peace certification are connected, and realize the high speed processing of data, and functional software producer and user customize jointly, in state
Inside there is no.
The content of the invention：
The technical problems to be solved by the invention are to provide data acquisition integration Mine-used I. S. Computer.
In order to solve the above problems, the technical scheme is that, data acquisition integration Mine-used I. S. Computer, including
WIFI module that battery pack, DC-DC module, LED display, industrial control board, USB are wireless, signal isolation plate, signaling conversion circuit, ore deposit
With intrinsic safety type headset, ethernet signal interface, Mine-used I. S USB flash drive, RS485/RS232 signaling interfaces and mine intrinsic safety
Type keyboard；
It is characterized in:The data acquisition integration Mine-used I. S. Computer be additionally provided with " ia " level safety protection circuit,
Touch pad, signal acquiring board, mine sensors interface, Mine-used I. S wire/wireless measurement while drilling device inserting tube and with drilling through
Letter plate；
The DC-DC module is powered by battery pack by " ia " level safety protection circuit, and DC-DC module is respectively LED and shows
Display screen, industrial control board, signal isolation plate, signal acquiring board are powered, and the both positive and negative polarity of each output end of the DC-DC module is equal
It is isolated from each other；
Industrial control board receives the usb signal of signal isolation plate output, the usb signal of touch pad output is received, after being processed
LED display is exported to show；Industrial control board also carries out duplex communication with the wireless WIFI modules of USB；The letter that industrial control board will also be received
Number processed, output usb signal to signal isolation plate；
Signal isolation plate carries out isolation processing and signal conversion to the signal for receiving；Signal isolation plate and industrial control board, signal
Change-over circuit, ethernet signal interface, Mine-used I. S USB flash drive, RS485/RS232 signaling interfaces, Mine-used I. S key
Disk and with bore communication board carry out duplex communication respectively；
The standard signal that signal isolation plate is exported is converted into audio signal output to Mine-used I. S by signaling conversion circuit
Headset；The audio signal that signaling conversion circuit receives the output of Mine-used I. S headset is converted into standard signal output to signal isolation
Plate；
Signal acquiring board is received at the analog current signal or frequency pulse signal of mine sensors interface output
Signaling conversion circuit is arrived in output after reason, and the signal that signaling conversion circuit will be received is converted into standard signal output to signal isolation
Plate, industrial control board is arrived in output after signal isolation plate carries out isolation processing；Industrial control board outputting standard signal is carried out by signal isolation plate
To signaling conversion circuit after isolation processing, signaling conversion circuit is converted into control signal output to signal acquiring board, control signal
Collection plate gathers the data of mine sensors interface.
The present invention uses " ia " protection class, can be filled with wired mine disaster relief command device and mine disaster relief wireless command
Put and connect, can with mining wired and wireless drilling measuring system docking communication, carry out voice, video and environmental data treatment and
Display；Meanwhile, using design of Virtual Instruments, primary signal being gathered by multifunctional data acquisition card, the function of instrument is used
Software definition, by being connected with the mine sensors with coal peace certification after Explosion-proof Design, the underground for realizing data is real at a high speed
When process, instrumental function can customize as needed；Also, advanced isolation technology is used, to output signal（Including USB,
RS232, RS485 signal, frequency signal）Insulation blocking is carried out with power supply.
According to a kind of preferred scheme of data acquisition of the present invention integration Mine-used I. S. Computer, " ia "
Level safety protection circuit and battery pack is integral as intrinsic safety component with epoxy resin encapsulated, and output end in battery pack sets
Current-limiting resistance is put to limit the output energy of battery pack；The charging end of battery pack is arranged in series blocking diode；Realize " ia " level
Intrinsicallysafecircuit requirement；And with replaceable standby mining casting-seal intrinsically safe stand-by power supply, meet more than 24 hours not between
Disconnected work.
According to a kind of preferred scheme of data acquisition of the present invention integration Mine-used I. S. Computer, the signal
Collection plate includes isolated amplifier, switching switch and multifunctional data acquisition card；Wherein isolated amplifier connects mine sensors
After the analog current signal or frequency pulse signal of mouth output carry out isolation enhanced processing, by switching switch according to industrial control board
Instruction switching is exported to multifunctional data acquisition card, and signal is arrived in output after multifunctional data acquisition card carries out data acquisition and conversion
Change-over circuit.
This signal acquiring board uses design of Virtual Instruments, and primary signal, instrument are gathered by multifunctional data acquisition card
Function use software definition, by after Explosion-proof Design with coal peace certification mine sensors connect, realize data
Underground high rate bioreactor, in Signals collecting function, with 8 tunnel voltage signal acquisitions and 8 road frequency signal collections, can adopt
Collect the 200Hz-1000Hz frequency output signals of mine sensors, it is also possible to gather 4-20mA current output signals.
According to a kind of preferred scheme of data acquisition of the present invention integration Mine-used I. S. Computer, the industry control
Data generation module, software parameters configuration module, cache module, startup D/A modular converters, output waveform mould are provided with plate
Block, startup A/D modular converters, data transmission module and data disaply moudle；
Wherein, the industrial control board starts task 24 in running environment according to demand, according to software interface resource by software
Parameter configuration module carries out software configuration parameter；If data-signal output, data generation module generation description output signal
The data of feature, and caching is put it into by the first cache module；When needing D/A to change, start D/A modular converters and start
D/A is changed, and by output waveform module output waveform, completes this data output；
If data input, starting A/D modular converters control multifunctional data acquisition card carries out data acquisition and A/D turns
Exported after changing；Change data is put into buffer by the second cache module, and by data transmission module be transferred to processor or
Light-emitting diode display carries out data display, completes this data input.
This functional characteristics is that user can realize that signal acquisition and waveform are defeated by the self-defined of software customized instrumental function
Go out.
According to a kind of preferred scheme of data acquisition of the present invention integration Mine-used I. S. Computer, the signal
Division board includes RS485 signal isolations plate and RS232 signal isolation plates, and signal transmitting and receiving is provided with RS485 signal isolation plates
Conversion isolating chip, the isolation and input for realizing TTL-RS485 signals is changed with output end DC-isolation.
According to a kind of preferred scheme of data acquisition of the present invention integration Mine-used I. S. Computer, in RS232
RS232 signal transmitting and receivings conversion isolating chip is provided with signal isolation plate, realizes that the conversion of+5V DC-isolations and TTL-RS232 are patrolled
Collect the conversion of signal Magnetic isolation.
The beneficial effect of data acquisition of the present invention integration Mine-used I. S. Computer is：The present invention uses " ia "
Protection class, can connect with wired mine disaster relief command device and mine disaster relief wireless commanding device, can be wired with mining
With wireless drilling measuring system docking communication, carry out the treatment of voice, video and environmental data and show；Meanwhile, the present invention is used
Design of Virtual Instruments, primary signal is gathered by capture card, and the function of instrument uses software definition, by after Explosion-proof Design with
Mine sensors with coal peace certification are connected, and realize the underground high rate bioreactor of data, and instrumental function can be as needed
Customization；Also, the present invention uses advanced isolation technology, and insulation blocking is carried out to output signal and power supply；In signal acquisition work(
On energy, with plurality of voltages signal acquisition and channelized frequencies signal acquisition, the 200Hz-1000Hz of mine sensors can be gathered
Frequency output signal, it is also possible to gather 4-20mA current output signals；Also have replaceable standby mining casting-seal intrinsically safe standby
Power supply, meets the non-stop run of more than 24 hours；Low cost of the present invention, function is complete, can the occasion such as colliery extensively.
Brief description of the drawings
Fig. 1 is data acquisition of the present invention integration Mine-used I. S. Computer schematic block circuit diagram.
Fig. 2 is the circuit diagram of " ia " level safety protection circuit 2 of the invention.
Fig. 3 is the data acquisition schematic diagram of analog signal.
Fig. 4 is analog signal input and output software definitim flow.
Fig. 5 is the circuit diagram of RS485 signal isolation plates in signal isolation plate 8 of the present invention.
Fig. 6 is the circuit diagram of RS232 signal isolation plates in signal isolation plate 8 of the present invention.
Specific embodiment
Referring to Fig. 1 to Fig. 6, data acquisition integration Mine-used I. S. Computer, including battery pack 1, " ia " level this security
Protection circuit 2, DC-DC module 3, LED display 4, touch pad 5, industrial control board 6, USB is wireless WIFI module 7, signal isolation plate 8, letter
Number collection plate 9, signaling conversion circuit 10, mine sensors interface 11, Mine-used I. S headset 12, Mine-used I. S be wired/nothing
Line measurement while drilling device inserting tube 13, ethernet signal interface 14, Mine-used I. S USB flash drive 15, RS485/RS232 signals connect
Mouthfuls 16, Mine-used I. S keyboard 17 and with boring communication board 19；
Wherein, the DC-DC module 3 is powered by battery pack 1 by " ia " level safety protection circuit 2,3 points of DC-DC module
Not Wei LED display 4, industrial control board 6, signal isolation plate 8, signal acquiring board 9 power, and the DC-DC module 3 each is defeated
The both positive and negative polarity for going out end is isolated from each other；
Industrial control board 6 receives the usb signal of the output of signal isolation plate 8, receives the usb signal of the output of touch pad 5, is processed
Output afterwards shows to LED display 4；Industrial control board 6 also carries out duplex communication with the wireless WIFI modules 7 of USB；Industrial control board 6 will also be received
To signal processed, output usb signal is to signal isolation plate 8；
The signal that signal isolation plate 8 pairs is received carries out isolation processing and signal conversion；Signal isolation plate 8 and industrial control board 6, letter
Number change-over circuit 10, ethernet signal interface 14, Mine-used I. S USB flash drive 15, RS485/RS232 signaling interfaces 16, ore deposit
Duplex communication is carried out respectively with intrinsic safety type keyboard 17 and with communication board 19 is bored；
The standard signal that signal isolation plate 8 is exported is converted into audio signal output to mine intrinsic safety by signaling conversion circuit 10
Type headset 12；The audio signal of the output of the reception Mine-used I. S of signaling conversion circuit 10 headset 12 is converted into standard signal output and arrives
Signal isolation plate 8；
Signal acquiring board 9 receives the analog current signal of the output of mine sensors interface 11 or for frequency pulse signal enters
Signaling conversion circuit 10 is arrived in output after row treatment, and the signal that signaling conversion circuit 10 will be received is converted into standard signal output to letter
Number division board 8, signal isolation plate 8 carries out after isolation processing output to industrial control board 6；The outputting standard signal of industrial control board 6 passes through signal
Division board 8 is converted into control signal output to signal after carrying out isolation processing to signaling conversion circuit 10, signaling conversion circuit 10
Collection plate 9, the data of the collection mine sensors of control signal collection plate 9 interface 11.
In specific embodiment, output one end A of the DC-DC module 3 exports+12V for LED display 4 is powered, DC-DC
The end B of the output two output+5V of module 3 power for industrial control board 6, and the end C of the output three outputs+5V of DC-DC module 3 is signal isolation plate
8 power supplies, the end D of output four of DC-DC module 3 exports+5V for signal acquiring board 9 is powered；Each output end of DC-DC module 3
Both positive and negative polarity is isolated from each other；
One end E of industrial control board 6 exports LVDS standard signals to LED display 4；Two end F of industrial control board 6 are marked by USB2.0
Quasi- port is connected with touch pad 5, and the wireless WIFI module 7 of three end I and USB of industrial control board 6 is connected；The four end J and signal of industrial control board 6
Two end M of division board 8 are connected using USB2.0 standard signals；
The L ends of signal isolation plate 8 export three end C and are connected with the output+5V dc sources of DC-DC module 3, signal isolation plate
8 O ends are connected using USB2.0 standard signals with Mine-used I. S keyboard 17；The defeated entry/exit RS485/ in P ends of signal isolation plate 8
RS232 duplex signalings are connected with RS485/RS232 signaling interfaces 16, the Q ends outputting standard USB2.0 standard letters of signal isolation plate 8
Number it is connected with Mine-used I. S USB flash drive 15, R ends output TCP/IPV4 standard signals and the Ethernet of signal isolation plate 8 are believed
Number interface 16 is connected, and the S ends output RS232 signals of signal isolation plate 8 are connected with the X ends for boring communication board 19, with brill communication board
19 Y ends output 120~180mA current signals are connected with the Wireless/wired measurement while drilling device inserting tube 13 of Mine-used I. S, signal
The T ends output usb signal of division board 8 is connected with the U ends of signaling conversion circuit 10；
The standard USB2.0 signals that the U ends of signaling conversion circuit 10 export with the T ends of signal isolation plate 8 are connected, and signal turns
Change circuit 10 W ends output standard USB2.0 signals be connected with the X ends of signal acquiring board 9, the V ends of signaling conversion circuit 10 and
Mine-used I. S headset 12 is connected；
+ the 5V that the D ends of the Z ends of signal acquiring board 9 and DC-DC module 3 export is connected, the X ends of signal acquiring board 9 and signal
The W ends connection of change-over circuit 10, the Y ends of signal acquiring board 9 are connected with mine sensors interface 11.
In a particular embodiment, described " ia " level safety protection circuit 2 is integrally made with battery pack 1 with epoxy resin encapsulated
It is intrinsic safety component, and output end in battery pack 1 sets current-limiting resistance R10 to limit the output energy of battery pack 1；Battery pack
1 charging end is arranged in series blocking diode D3, D4, D5；Realize the requirement of " ia " level intrinsicallysafecircuit.
In a particular embodiment, the signal acquiring board 9 includes isolated amplifier 20, switching switch 21 and multi-functional data
Capture card 22；Analog current signal or frequency pulse signal that wherein isolated amplifier 20 exports mine sensors interface 11
After carrying out isolation enhanced processing, by switching switch 21 according to the instruction switching output of industrial control board 6 to multifunctional data acquisition card 22,
Signaling conversion circuit 10 is arrived in output after multifunctional data acquisition card 22 carries out data acquisition and conversion.Hereby it is achieved that mining biography
The collection of sensor information and analyzing and processing, are characterized in centered on computer of the invention, user can with oneself integral instrument,
Instrument composition is simple, a tractor serves several purposes, movable type measurement, can carry out real-time data acquisition and in real time analysis in underground.With 8 tunnels
Voltage signal acquisition and the collection of 8 road frequency signals, can in the 200Hz-1000Hz frequency output signals of collection mine sensors,
4-20mA current output signals can also be gathered.
In a particular embodiment, be provided with the industrial control board 6 data generation module 25, software parameters configuration module 26,
Cache module, startup D/A modular converters 28, output waveform module 29, the startup A/D modular converters 30, and of data transmission module 32
Data disaply moudle 33；
Wherein, the industrial control board 6 starts task 24 in running environment according to demand, according to software interface resource by software
Parameter configuration module 26 carries out software configuration parameter；If data-signal output, the generation description output of data generation module 25
The data of signal characteristic, and caching is put it into by the first cache module 27；When needing D/A to change, start D/A moduluss of conversion
Block 28 start D/A conversion, output signal by after signal condition, by the output waveform of output waveform module 29.Specially：Will be known
Waveform sampled with N number of sampled point, the numerical value of N number of point is then stored in memory, take a bit every n point afterwards
Value, until all take completely N number of point, i.e.,：Sine wave is extended into n cycle.Then with Fs by these sinusoidal wave number DA out, will
The connection of these dot sequencies just constitutes an output waveform for needs, and Fs is configured in waveform output module.
The frequency of output waveform：The frequency resolution of output waveform：
Wherein：foThe frequency of output waveform is represented, Fs represents the renewal rate of DA, and Δ f represents the frequency point of output waveform
Resolution, n represents the periodicity of the sinusoidal wave number of buffer the inside storage, and N represents the size of buffer.
If data input, start A/D modular converters 30 control multifunctional data acquisition card 22 carry out data acquisition and
Exported after A/D conversions；Change data is put into buffer by the second cache module 31, and is transferred to place by data transmission module 32
Reason device or light-emitting diode display 4 carry out data display, complete to end task after this data input 34.This functional characteristics is user
Signal acquisition and waveform output can be realized by the self-defined of software customized instrumental function.
Signal isolation plate 8 includes RS485 signal isolations plate and RS232 signal isolation plates, wherein, RS485 signal isolation plates
As shown in figure 5, RS485 transceivers U2 realizes that RS485-TLL is changed, signal transmitting and receiving conversion isolating chip U3 selects ADM2582E,
TTL-RS485 signal transmitting and receivings, isolation and input and the conversion of output end DC-isolation are realized, isolation voltage is more than 2000V,
ADM2582E isolation voltages are 2500V, realize that overall isolation voltage is more than 1500V, reach the dielectric of mine intrinsic safety equipment
The requirement of intensity, chip U1A, U1B are monostable oscillators, and control RS485 transceivers U2, signal transmitting and receiving change isolating chip U3's
Transmitting-receiving enables pin to control the data transmit-receive time of RS485, and during its original state, the Q ends of chip U1A, U1B are low levels；
RS485 transceivers U2, signal transmitting and receiving change isolating chip U3 all in reception state, such as when RS485 transceivers U2 receives data
When, start bit is changed into high level from the Q ends of 1 to 0 change triggers U1A, at the transmitter of signal transmitting and receiving conversion isolating chip U3
In working condition；Low level removes the Q ends of U1B simultaneously so that RS485 transceivers U2 is in reception state.The pulse that U1A is produced
Width has relation with electric capacity C1 and resistance R15.Isolation terminal isolation voltage is caused using signal transmitting and receiving conversion isolating chip U3, is climbed
Electrical distance, electric clearance and spacing should meet requirements of the GB3836.4 on intrinsic safety degree of protection, and circuit realiration is simple, automatic control
System transmitting-receiving, the bit error rate is small.
As shown in fig. 6, industrial control board M ends are output as RS232 port signals, it is to realize by MAX232CPE chips U4
RS232 is changed to Transistor-Transistor Logic level signal, and changes isolating chip U5 as RS232 signal transmitting and receivings using ADM3251E, while realizing
+ 5V DC-isolations are changed and the conversion of TTL-RS232 logical signals Magnetic isolation, and its isolation voltage is 2500V, data rate
460kbps, voltage multiplie/phase inverter uses four μ F of outside 0.1.Using RS232 signal transmitting and receivings conversion isolating chip U5 cause every
Should meet requirements of the GB3836.4 on intrinsic safety degree of protection from terminal isolation voltage, creep age distance, electric clearance and spacing.
LED display uses LED-backlit screen, and 12V direct current supplys are driven by the A ends of DC-DC module 3.Described display mould
Plate and industrial control board are connected with DC-DC module 3, the A ends output 12V voltages of DC-DC module 3, and 4 groups in parallel, respectively first back of the body
Optical module to the 4th backlight module is powered, without inverter driving circuit；Indicating template signal is input into by industrial control board 6；DC-DC moulds
Block 3 is protected by " ia " level, the display module of 4 groups of lamp groups of output driving and display screen, reaches GB3836.4 on essential safety
Parameter index requirement, prevent the potential safety hazard that high pressure causes.
Claims (4)
1. data acquisition integration Mine-used I. S. Computer, including battery pack (1), DC-DC module (3), LED display (4),
Industrial control board (6), USB is wireless WIFI module (7), signal isolation plate (8), signaling conversion circuit (10), Mine-used I. S headset
(12), ethernet signal interface (14), Mine-used I. S USB flash drive (15), RS485/RS232 signaling interfaces (16) and mining
Intrinsic safety type keyboard (17)；
It is characterized in that:The data acquisition integration Mine-used I. S. Computer be additionally provided with " ia " level safety protection circuit (2),
Touch pad (5), signal acquiring board (9), mine sensors interface (11), Mine-used I. S wire/wireless measurement while drilling device are visited
Manage (13) and with brill communication board (19)；
The DC-DC module (3) is powered by battery pack (1) by " ia " level safety protection circuit (2), and DC-DC module (3) is respectively
It is LED display (4), industrial control board (6), signal isolation plate (8), signal acquiring board (9) power supply, and the DC-DC module (3)
The both positive and negative polarity of each output end be isolated from each other；
The industrial control board (6) receives the usb signal of signal isolation plate (8) output, receives touch pad (5) output
Usb signal, output shows to LED display (4) after being processed；Industrial control board (6) is also carried out with the wireless WIFI modules of USB (7)
Duplex communication；The signal that industrial control board (6) will also be received is processed, output usb signal to signal isolation plate (8)；
The signal isolation plate (8) carries out isolation processing and signal conversion to the signal for receiving；Signal isolation plate (8) and industrial control board
(6), signaling conversion circuit (10), ethernet signal interface (14), Mine-used I. S USB flash drive (15), RS485/RS232 letters
Number interface (16), Mine-used I. S keyboard (17) and duplex communication is carried out respectively with communication board (19) is bored；
The standard signal that signal isolation plate (8) is exported is converted into audio signal output and arrives mining by the signaling conversion circuit (10)
Intrinsic safety type headset (12)；The audio signal that signaling conversion circuit (10) receives Mine-used I. S headset (12) output is converted into standard
Signal output is to signal isolation plate (8)；
The signal acquiring board (9) receives the analog current signal or frequency pulse signal of mine sensors interface (11) output
Output is to signaling conversion circuit (10) after being processed, and it is defeated that the signal that signaling conversion circuit (10) will be received is converted into standard signal
Go out to signal isolation plate (8), exported to industrial control board (6) after carrying out isolation processing by signal isolation plate (8)；Industrial control board (6) is exported
Standard signal is after signal isolation plate (8) carries out isolation processing to signaling conversion circuit (10), signaling conversion circuit (10) turn
Change control signal output to signal acquiring board (9), the number of control signal collection plate (9) collection mine sensors interface (11) into
According to；
The signal acquiring board (9) includes isolated amplifier (20), switching switch (21) and multifunctional data acquisition card (22)；Its
The analog current signal or frequency pulse signal that middle isolated amplifier (20) exports mine sensors interface (11) carry out every
After enhanced processing, by switching switch (21) according to the instruction switching output of industrial control board (6) to multifunctional data acquisition card (22),
Signaling conversion circuit (10) is arrived in output after multifunctional data acquisition card (22) carries out data acquisition and conversion；
Data generation module (25), software parameters configuration module (26), cache module, startup are provided with the industrial control board (6)
D/A modular converters (28), output waveform module (29), startup A/D modular converters (30), data transmission module (32) and data are aobvious
Show module (33)；
Wherein, the industrial control board (6) starts task (24) in running environment according to demand, according to software interface resource by software
Parameter configuration module (26) carries out software configuration parameter；If data-signal output, data generation module (25) generation description
The data of output signal feature, and buffer is put it into by the first cache module (27)；When needing D/A to change, start
D/A modular converters (28) start D/A conversions, and by output waveform module (29) output waveform, complete this data output；
If data input, start A/D modular converters (30) control multifunctional data acquisition card (22) carry out data acquisition and
Exported after A/D conversions；Change data is put into buffer by the second cache module (31), and is transmitted by data transmission module (32)
Data display is carried out to processor or light-emitting diode display (4), this data input is completed.
2. data acquisition according to claim 1 integration Mine-used I. S. Computer, it is characterised in that:" ia " level
Safety protection circuit (2) is integral as intrinsic safety component with epoxy resin encapsulated with battery pack (1), and in battery pack (1)
Output end sets current-limiting resistance (R10) to limit the output energy of battery pack (1)；The charging end of battery pack (1) is arranged in series resistance
Disconnected diode (D3, D4, D5)；Realize the requirement of " ia " level intrinsicallysafecircuit.
3. data acquisition according to claim 1 and 2 integration Mine-used I. S. Computer, it is characterised in that:The letter
Number division board (8) includes RS485 signal isolations plate and RS232 signal isolation plates, and letter is provided with the RS485 signal isolations plate
Number transmitting-receiving conversion isolating chip (U3).
4. data acquisition according to claim 3 integration Mine-used I. S. Computer, it is characterised in that:The RS232
RS232 signal transmitting and receivings are provided with signal isolation plate and change isolating chip (U5).
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| CN202748696U (en) * | 2012-03-20 | 2013-02-20 | 中煤科工集团重庆研究院 | Flameproof and intrinsically-safe computer for mine |
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| CN202748696U (en) * | 2012-03-20 | 2013-02-20 | 中煤科工集团重庆研究院 | Flameproof and intrinsically-safe computer for mine |
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