CN2287305Y - Gas chromatorgraphy multifunctional controller - Google Patents
Gas chromatorgraphy multifunctional controller Download PDFInfo
- Publication number
- CN2287305Y CN2287305Y CN 96231386 CN96231386U CN2287305Y CN 2287305 Y CN2287305 Y CN 2287305Y CN 96231386 CN96231386 CN 96231386 CN 96231386 U CN96231386 U CN 96231386U CN 2287305 Y CN2287305 Y CN 2287305Y
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- microprocessor
- controller
- chromatograph
- output port
- control
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Abstract
The utility model relates to a chromatorgraphic automatic analysis controller, comprising a microprocessor, the memory cell of the microprocessor, an attached display cell and a control keyboard. The utility model is characterized in that the output port of the microprocessor is connected with the on-off control end of a sampling valve to control the communication of the output port and the sampling port of a chromatograph, and meanwhile, the output port of the microprocessor is connected with the on-off switch of a chromatographic data processor.
Description
The utility model relates to the controller of stratographic analysis with auto injection and control analysis.
Chromatography instrument is an analytical instrument commonly used in the physical and chemical experiment, existing chromatography instrument generally is by relatively independent injector, chromatograph and chromatography device are formed, existing instrument such as CN91221548 have provided the gas chromatograph that is exclusively used in mine, on pick-up unit, made improvement, go to control chromatographic work by transaudient sensor in addition in addition, but there is following inconvenience in these two kinds of prior aries, the former need change on instrument, and in control, bias toward chromatographic special function and increase, the latter needs sensing technology and is not is the adjustable widely applicable chromatograph of intelligence, and simple function just.In addition the laboratory in a large number still by hand sample introduction be main, if be furnished with chromatographic data processor, start mostly still based on manually.
The purpose of this utility model is the weak point that overcomes existing instrument, and a kind of automatic analyzer-controller of band controlled variable chromatogram that is common to all chromatographic apparatuss and convenient easy-adjustable is provided.
Technical solution of the present utility model is: comprise microprocessor and storage unit thereof, the display unit of setting up and supervisory keyboard, it is characterized in that the microprocessor delivery outlet connects the keying control end of sampling valve and the connection of chromatograph injection port, microprocessor also has output port to connect the open-close on-off of chromatographic data processor simultaneously.
Further improvement of the utility model comprises: the chromatographic peak negative peak is measured at signal input part be provided with the phase inverter that relay constitutes, i.e. negative peak overturn system.
Characteristics of the present utility model are: this device organically is combined into one sample introduction, chromatograph and the chromatographic data processor of testing sample, make stratographic analysis constitute the higher analytical equipment of robotization, not only can real-time online but also can off-line analysis, because auto injection, data processing such as carries out synchronously at the realization of function, eliminate personal error, improved the precision of total system.Need not any change instrument when being equipped with gas chromatograph and data processor, the stratographic analysis of especially satisfying reducing gas detects.
The utility model is described in further detail below in conjunction with accompanying drawing with by embodiment:
Fig. 1 has provided this controller principle block scheme, and Fig. 2 is controller circuitry figure.In Fig. 1,2, mainly by microprocessor, program storage unit (PSU), keyboard input, display unit, output control unit four most of compositions.This controller can keypad running parameter (sample injection time, negative peak flip-flop transition, analytical cycle) the amenable to process instruction of input work again and again.Provide digital indicator on the panel of controller, 4 * 4 operating keys and the corresponding light emitting diode indicator that are complementary with little processing.
One. microprocessor
This controller is in when design, and according to the function that controlling object will realize, price is low, function is strong that single-chip microcomputer--8031 as microprocessor in employing, and 8031 contain the RAM of one 8 processor, 128 bytes, 21 special function registers.Four 8 bit parallel mouths (P0-P3), a full duplex serial port, two sixteen bit timer counters, 6 control signal wires.Have the microprocessor of storer, can finish said function as P8, P9 etc.
Two. program storage unit (PSU)
Because the inner no EPROM of 8031 single-chip microcomputers, so can not constitute complete computing machine, necessary external EPROM stores the program of user's establishment as program storage (2764 8K * 8).
Address wire provides the address wire of least-significant byte except the 8D latch 74LS373 that is exported through the three-state buffering by 8031 P0 mouth in the EPROM sheet, and also needing provide P2.0-P2.4 as the high address line by the P2 mouth.Address wire connects display interface device 8279 by relay J 4, and connects digital indicator by decoding scheme.
Three. output control unit
Output control by 8031 P10-P11 through rp-drive (74LS04)--optoisolator OPT1-6--one-level drives G1, G2--miniature relay U5, U9 form, and the delivery outlet state is controlled by 8031 microprocessors.General microprocessor connects sampling device and chromatograph after all isolating (optocoupler), driving circuit and relay through photoelectricity again.
1. after CPU receives startup command, P11 is low level, and is anti-phase through reverser, after photoelectricity is isolated, make the conducting of G2 pipe, the U9 relay is subjected to electric adhesive, J2 interface 1,2 ends, 3,4 end closures, make 12 logical plane valves, chromatographic data processor work respectively, this state be maintained to CPU receive arrived order switching time after, putting the P11 mouth is high level, the J2 port recovers initial state.At this moment, because the intrinsic characteristic of chromatography machine, cut-off signal will not be managed and adopt, until behind the entire process end-of-job, wait for next startup command.This is because when the analytical gas sample, because sampling device must adopt multipole separation process, leads to sampling valves with 12.
2. after CPU receives the negative peak flip commands, P10 is a low level, anti-phase through reverser, after photoelectricity is isolated, make the conducting of G1 pipe, the U5 relay is subjected to electric adhesive, J3 peak-to-peak signal input end (4 (+), 3 (-)) is delivered to signal output part (2 (-), 1 (+)) output after relay is anti-phase, this state is maintained to after CPU receives negative peak upset the finish command, putting P10 is high level, and the J3 port recovers initial state.The keying of J6 control data treating apparatus.Above-mentioned output control all can be set by microprocessor and be realized by keyboard operation control time parameter.
Four. the course of work
Program begins to carry out from 000H behind the controller electrification reset.At first system is carried out initialization, in the middle of comprise initialization to programmable keyboard, display management chip 8279.Just enter the monitoring master routine afterwards.This moment, the user can carry out the parameter setting, and content comprises sample injection time, negative peak flip-flop transition and analytical cycle.
Whether after parameter was set up and finished, (when showing " P----") keyed in the self check key under monitor state, and system can carry out quick self-checking to customer parameter, correct to check the customer parameter setting.Check errorlessly, system enters armed state, and when keying in the operation key, the customer requirements executive routine is just pressed by system.
In operational process, (under the self check state), when keying in Pause key, then interrupt routine is carried out, and returns sub key, display module.If after just at sample introduction, treating that sample injection time arrives this moment, carry out again and interrupt.
Claims (2)
1. automatic analyzer-controller of chromatogram, comprise microprocessor and storage unit thereof, the display unit of setting up and supervisory keyboard, it is characterized in that the microprocessor delivery outlet connects the keying control end control of sampling valve and being communicated with of chromatograph injection port, microprocessor also has output port to connect the open-close on-off of chromatographic data processor simultaneously.
2. by the described controller of claim 1, it is characterized in that microprocessor is by connecting the keying control end that connects sampling device and chromatograph behind optoisolator, driving circuit and the relay again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96231386 CN2287305Y (en) | 1996-03-07 | 1996-03-07 | Gas chromatorgraphy multifunctional controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96231386 CN2287305Y (en) | 1996-03-07 | 1996-03-07 | Gas chromatorgraphy multifunctional controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2287305Y true CN2287305Y (en) | 1998-08-05 |
Family
ID=33908583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96231386 Expired - Fee Related CN2287305Y (en) | 1996-03-07 | 1996-03-07 | Gas chromatorgraphy multifunctional controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2287305Y (en) |
-
1996
- 1996-03-07 CN CN 96231386 patent/CN2287305Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |