CN103398744A - Monitor for integrated parameters of medical molecular sieve oxygen generation system - Google Patents
Monitor for integrated parameters of medical molecular sieve oxygen generation system Download PDFInfo
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- CN103398744A CN103398744A CN2013103447169A CN201310344716A CN103398744A CN 103398744 A CN103398744 A CN 103398744A CN 2013103447169 A CN2013103447169 A CN 2013103447169A CN 201310344716 A CN201310344716 A CN 201310344716A CN 103398744 A CN103398744 A CN 103398744A
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Abstract
The invention relates to the technical field of detection devices of an oxygen generation system of a medical gas system, and in particular to a monitor for integrated parameters of a medical molecular sieve oxygen generation system. The monitor comprises a singlechip, and is characterized by further comprising an A/D conversion module which is connected with the singlechip, wherein two high-precision digital analog converter, a digital communication port, a touch screen controller, and an integrated LCD controller are in external connection with the singlechip. According to the monitor, the situation that functions of intelligent calculation, processing of collection, and high precision and accurate display of multi parameter data, centralized communication, sensor fault indication, and the like are conducted in one intelligent instrument is realized with C programming language through the singlechip; the test parameters are comprehensive and include oxygen concentration, moisture content, carbon monoxide content, carbon dioxide content, temperature, humidity, and district air pressure; the test is integrated in one instrument to be finished, so that the system configuration is simple, the construction is simple and convenient, the failure rate is lowed, the maintenance is easy, and the system cost is lowered.
Description
Technical field
The present invention relates to the oxygen generation system checkout equipment technical field in medical oxygen supply system, especially relate to a kind of medical molecular sieve oxygen generation system integration parameter monitor.
Background technology
At present, the construction of medical oxygen supply system engineering is indispensable important component part in Constructing of Hospital, and medical oxygen supply system is called as life-support system, is directly to concern people's life and healthy specialities, so to the quality requirements of product, be rigid.Along with society is fast-developing, medical oxygen producing also in a variety of forms and fast-developing.For the medical oxygen safety of further standard China, country promulgated and has carried out medical oxygen supply system engineering new standard: GB50751-2012 " the medical gas project technical manual " from 2012.Especially medical molecular sieve oxygen generation system industry has been improved requirement aspect a lot, wherein, except requiring the oxygen concentration test, increased the parameters such as moisture, carbon monoxide content, carbon dioxide content are carried out high precision, measured requirement accurate, real-time testing; Input pickup is detected presence; Increase the configuration monitoring system, and monitor data possesses and provide simultaneously user's mis system and industry management system to use, to facilitate each side, set up the higher management database.
Only oxygen concentration is carried out continuous on-line testing in industry prior art, under new nation's standard-required, must need in the medical molecular sieve oxygen generation system to increase at least three class parameter testings and continous way work test instrumentation configuration and increase the costs such as relevant device, system architecture layout; And the communications protocol that not all possesses communication function or these parameter testing instrument in existing test instrumentation may not be identical, must increase numerous and diverse degree of supervisory system and multinomial test instrumentation communication interface amount and processing communications protocol.
Summary of the invention
The object of the invention is to avoid the defect of the measurement complexity of prior art that a kind of medical molecular sieve oxygen generation system integration parameter monitor is provided, it realizes at least six tested parameters of class such as oxygen concentration, temperature, humidity, carbon monoxide content, carbon dioxide content, region air pressure are integratedly completed, and increased the monitor device that monitors the input pickup status function in a smart instrumentation.Thereby effectively solve the defect that exists in prior art.
for achieving the above object, the technical scheme that the present invention takes is: described a kind of medical molecular sieve oxygen generation system integration parameter monitor, comprise single-chip microcomputer, be characterized in also comprising that described single-chip microcomputer is connected with the A/D modular converter, the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, four-operational amplifier, the 5th operational amplifier is connected with the A/D modular converter respectively with the 6th operational amplifier, oxygen sensor is connected with the first operational amplifier, pressure transducer is connected with the second operational amplifier, temperature sensor is connected with the 3rd operational amplifier, carbon monoxide transducer is connected with four-operational amplifier, carbon dioxide sensor is connected with the 5th operational amplifier, humidity sensor is connected with the 6th operational amplifier, the dual output transformer respectively with single-chip microcomputer, the 3rd operational amplifier is connected with the 6th operational amplifier, little power consumption direct current transmitter is connected with the dual output transformer, external two high precision digital-to-analog converters of described single-chip microcomputer, the digital communication port, touch screen controller and integrated form lcd controller, two high precision digital-to-analog converters connect respectively the first output port of power source and second source output port, the TFTLCD liquid crystal display is connected with the integrated form lcd controller with touch screen controller respectively, touch screen controller peripheral hardware USB interface, oxygen concentration lower bound warning output relay, the high limit of oxygen concentration warning output relay, carbon monoxide overload alarm output relay, carbon dioxide overload alarm output relay, humidity overload alarm output relay and temperature over-range warning output relay connect single-chip microcomputer.
Described TFT LCD liquid crystal display is connected with the dual output transformer with touch screen controller, the dual output transformer comprises rectifier circuit B1, rectifier circuit B1 is connected with the compound filtering circuit that capacitor C 1, capacitor C 2, inductance L 5 combine and passes through resistance R 1, resistance R 2 and stabilivolt W1 and connects output 5V DC voltage, to be transformed into direct current by the 100V AC alternating current that power transformer 220V AC becomes, ripple in the elimination rectifier output voltage, electric capacity, inductance also have flat ripple effect; The 5V DC voltage is converted into 3.6V DC by the LM2596S/DAJ adjustable voltage stabilizer, the LM2596S/DAJ adjustable voltage stabilizer is by comparer, reference voltage source, oscillator, the formations such as driver, the LM2596S/DAJ adjustable voltage stabilizer is connected with input filter capacitor C13, inductance L 4, diode D15 and storage capacitor C17.
Described digital communication port is standard RS-232C/RS-485 digital communication port, it adopts RS232/RS485 standard handovers chip S2-485 to realize that the existing RS232 interface of computing machine and RS485 interface communicate function, RS232/RS485 standard handovers chip is connected with RS232 standard 9 needle interfaces on one side, and another side is connected with the RS485 bus.
Described the first analog quantity communication output port and the second analog quantity communication output port are respectively 4-20mA output port and 0-5V/0-10V DC output port.
The output port of described A/D modular converter is connected with the input port of single-chip microcomputer, single-chip microcomputer is with the parameters that collects, carry out respectively the calculating of real time data Value Data, calibration and data block with the C language technology and transmit processing, realize the integrated measurement function of the parameter of medical oxygen generating system.
The P3.0 of described single-chip microcomputer, P3.1, GND pin are corresponding connected with TX, RX, the GND pin of touch screen controller respectively, touch screen controller is connected with TFT LCD liquid crystal display by the VGA interface, the data that described integrated form lcd controller and TFT LCD liquid crystal display receive single-chip microcomputer after processing demonstrate the data real-time information of colour, Chinese and realize simultaneously demonstration to sensor fault analytical information and parameter overload alarm information, with important information is kept in historical data base, realize data instantaneous value/history value function for monitoring.
Send to RS-232C/RS-485 digital communication port after data after described single-chip microcomputer is processed are processed with standard agreement and realize providing the digital quantity communication function; Be connected with 0-5V/0-10V DC output port with the 4-20mA output port through high precision digital-to-analog converter, realize providing the analog data communication function of standard.
Described single-chip microcomputer model is the MSP430 series monolithic, its low-power consumption, and integrated level is high, fast operation, the MSP430 series monolithic that processing power is strong; Described touch-screen adopts the very color touch-screen of TFTLCD, possesses the characteristics of high pixel and low-response time, centralized displaying oxygen concentration, CO concentration, CO
2Parameter and operation and the fault alarm information such as concentration, pressure, temperature, humidity; Described oxygen concentration sensor adopts the fuel tank lambda sensor, can realize the fast detecting of oxygen concentration, and this sensor is reliable and stable, and the worry that avoids safeguarding is equipped with the high lower bound alarm relay of oxygen concentration; Described temperature sensor adopts contactless thermoelectricity dependent sensor, and characteristics have: volume is little, and is highly sensitive, measures accurately, is furnished with temperature over-range and reports to the police; Described pressure transducer employing synthesis precision is high, the professional gas pressure sensor of good stability; Described humidity sensor adopts humitidy capacitor sensor, the major advantage of humicap be highly sensitive, product interchangeability good, the hysteresis of fast response time, humidity is little, easily realize miniaturization and integrated.
The invention has the beneficial effects as follows: described a kind of medical molecular sieve oxygen generation system integration parameter monitor, it uses modernization software/hardware technology, realize carrying out Intelligent Calculation in a smart instrumentation with C programmer by single-chip microcomputer, process multiple parameters data acquisition, high precision int, accuracy demonstration, concentrate the functions such as communication, sensor fault prompting.Make medical oxygen generating system have easier, high-precision multiparameter on-line monitoring instrument.Its test parameter scope is comprehensive, comprises oxygen concentration, moisture, carbon monoxide content, carbon dioxide content, temperature, humidity, region air pressure.Its Test integration is completed in an instrument, make that system configuration is simple, easy construction, and failure rate reduces and is easy to be safeguarded, system cost reduces.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is circuit principle structure schematic diagram of the present invention;
Fig. 2 is oxygen input signal amplifier fundamental diagram of the present invention;
Fig. 3 is single-chip microcomputer and TFT LCD liquid crystal display connection layout in Fig. 1 of the present invention;
Fig. 4 is dual output transformer circuit theory structure schematic diagram in Fig. 1 of the present invention;
Fig. 5 is the first analog quantity communication output port circuit theory structure schematic diagram in Fig. 1 of the present invention;
Fig. 6 is digital communication port and the PC circuit principle structure schematic diagram that joins in Fig. 1 of the present invention.
In Fig. 1: 1. single-chip microcomputer; 2.A/D modular converter; 3. oxygen sensor; 4. pressure transducer; 5. temperature sensor; 6. carbon monoxide transducer; 7. carbon dioxide sensor; 8. humidity sensor; 9. the first operational amplifier; 10. the second operational amplifier; 11. the 3rd operational amplifier; 12. four-operational amplifier; 13. the 5th operational amplifier; 14. the 6th operational amplifier; 15. oxygen concentration lower bound warning output relay; 16. the high limit of oxygen concentration warning output relay; 17. carbon monoxide overload alarm output relay; 18. carbon dioxide overload alarm output relay; 19. humidity overload alarm output relay; 20. temperature over-range warning output relay; 21. touch screen controller; 22. integrated form lcd controller; 23.TFT LCD liquid crystal display; 24. high precision digital-to-analog converter; 25. little power consumption direct current transmitter; 26. dual output transformer; 27. digital communication port; 28.USB interface; 29. the first analog quantity communication output port; 30. the second analog quantity communication output port.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example only is used for explaining the present invention, not is used for limiting scope of the present invention.
as shown in Figures 1 to 4, described a kind of medical molecular sieve oxygen generation system integration parameter monitor, comprise single-chip microcomputer 1, be characterized in also comprising that described single-chip microcomputer 1 is connected with A/D modular converter 2, the first operational amplifier 9, the second operational amplifier 10, the 3rd operational amplifier 11, four-operational amplifier 12, the 5th operational amplifier 13 is connected with A/D modular converter 2 respectively with the 6th operational amplifier 14, oxygen sensor 3 is connected with the first operational amplifier 9, pressure transducer 4 is connected with the second operational amplifier 10, temperature sensor 5 is connected with the 3rd operational amplifier 11, carbon monoxide transducer 6 is connected with four-operational amplifier 12, carbon dioxide sensor 7 is connected with the 5th operational amplifier 13, humidity sensor 8 is connected with the 6th operational amplifier 14, dual output transformer 26 respectively with single-chip microcomputer 1, the first operational amplifier 9, the second operational amplifier 10, the 3rd operational amplifier 11, four-operational amplifier 12, the 5th operational amplifier 13 is connected with the 6th operational amplifier 14, little power consumption direct current transmitter 25 is connected with dual output transformer 26, external two high precision digital-to-analog converters 24 of described single-chip microcomputer 1, digital communication port 27, integrated form lcd controller 22, two high precision digital-to-analog converters 24 connect respectively the first analog quantity communication output port 29 and the second analog quantity communication output port 30, TFTLCD liquid crystal display 23 is connected with integrated form lcd controller 22 with touch screen controller 21 respectively, touch screen controller 21 peripheral hardware USB interface 28, oxygen concentration lower bound warning output relay 15, the high limit of oxygen concentration warning output relay 16, carbon monoxide overload alarm output relay 17, carbon dioxide overload alarm output relay 18, humidity overload alarm output relay 19 and temperature over-range warning output relay 20 connect single-chip microcomputer.
Described TFT LCD liquid crystal display 23 is connected with dual output transformer 26 with touch screen controller 21, dual output transformer 26 comprises rectifier circuit B1, rectifier circuit B1 is connected with the compound filtering circuit that capacitor C 1, capacitor C 2, inductance L 5 combine and passes through resistance R 1, resistance R 2 and stabilivolt W1 and connects output 5V DC voltage, to be transformed into direct current by the 100VAC alternating current that power transformer 220V AC becomes, ripple in the elimination rectifier output voltage, electric capacity, inductance also have flat ripple effect; The 5V DC voltage is converted into 3.6V DC by the LM2596S/DAJ adjustable voltage stabilizer, the LM2596S/DAJ adjustable voltage stabilizer is by comparer, reference voltage source, oscillator, the formations such as driver, the LM2596S/DAJ adjustable voltage stabilizer is connected with input filter capacitor C13, inductance L 4, diode D15 and storage capacitor C17.
Described digital communication port 27 is standard RS-232C/RS-485 digital communication port, it adopts RS232/RS485 standard handovers chip S2-485 to realize that the existing RS232 interface of computing machine and RS485 interface communicate function, RS232/RS485 standard handovers chip is connected with RS232 standard 9 needle interfaces on one side, and another side is connected with the RS485 bus.
Described the first analog quantity communication output port 29 and the second analog quantity communication output port 30 are respectively 4-20mA output port and 0-5V/0-10V DC output port.
The output port of described A/D modular converter 2 is connected with the input port of single-chip microcomputer 1, single-chip microcomputer 1 is with the parameters that collects, carry out respectively the calculating of real time data Value Data, calibration and data block with the C language technology and transmit processing, realize the integrated measurement function of the parameter of medical oxygen generating system.
The P3.0 of described single-chip microcomputer 1, P3.1, GND pin are corresponding connected with TX, RX, the GND pin of touch screen controller 21 respectively, touch screen controller 21 is connected with TFT LCD liquid crystal display 23 by the VGA interface, described integrated form lcd controller 22 and TFT LCD liquid crystal display 23 receive data after single-chip microcomputer 1 is processed and demonstrate the data real-time information of colour, Chinese and realize simultaneously demonstration to sensor fault analytical information and parameter overload alarm information, with important information is kept in historical data base, realize data instantaneous value/history value function for monitoring.
Send to RS-232C/RS-485 digital communication port 27 after data after described single-chip microcomputer 1 is processed are processed with standard agreement and realize providing the digital quantity communication function; Are connected and are connected with 0-5V/0-10V DC output port with 4-20mA output port 29 through high precision digital-to-analog converter, realize providing the analog data communication function of standard.
Described single-chip microcomputer model is the MSP430 series monolithic, its low-power consumption, and integrated level is high, fast operation, the MSP430 series monolithic that processing power is strong; Described touch-screen adopts the very color touch-screen of TFTLCD, possesses the characteristics of high pixel and low-response time, centralized displaying oxygen concentration, CO concentration, CO
2Parameter and operation and the fault alarm information such as concentration, pressure, temperature, humidity; Described oxygen concentration sensor adopts the fuel tank lambda sensor, can realize the fast detecting of oxygen concentration, and this sensor is reliable and stable, the worry that avoids safeguarding.Be equipped with the high lower bound alarm relay of oxygen concentration; Described temperature sensor adopts contactless thermoelectricity dependent sensor, and characteristics have: volume is little, and is highly sensitive, measures accurately.Being furnished with temperature over-range reports to the police; Described pressure transducer employing synthesis precision is high, the professional gas pressure sensor of good stability; Described humidity sensor adopts humitidy capacitor sensor, the major advantage of humicap be highly sensitive, product interchangeability good, the hysteresis of fast response time, humidity is little, easily realize miniaturization and integrated.
Described a kind of medical molecular sieve oxygen generation system integration parameter monitor, it is to the oxygen concentration parameter testing, be to adopt technology in independent intellectual property right " desk-top Intelligent Oxygen Analysing Meter embedded software ", Intelligent Calculation goes out and demonstrates exactly oxygen concentration real time data value in the Different Altitude regional environment.It is to every measured parameter, strictly by the design of industry GB new standard relevant regulations: input pickup duty measuring ability; Parameter overload alarm function; Parameter range ability, precision, accuracy rate etc.Adopt modern TFT LCD color LCD screen new technology, show the real time data of parameters, and with the friendly interface of Chinese display meaning of parameters, operate simple and easy, facilitate, make this instrumental technique more embody modernization and hommization.The current signal of lambda sensor output, the disposal route that adopts second signal to amplify: amplify oppositely through the first order of dual operational amplifier that (enlargement factor is 10
6Doubly), then through the second level of low consumed power operational amplifier, oppositely amplify (enlargement factor is 20 times), it exports the A/D modular converter to.In order to prevent the zero point drift of circuit, add a negative voltage before the amplifier of the second level, guarantee that final output voltage is greater than 0.
Instrument design of the present invention provides the digital communication interface of standard RS-232C/RS-485,4～20mA electric current, 0～10V and 0～5V voltage analog formula communication function, after realizing that multiparameter concentrates pool to process, and carries out data communication between other supervisory system/equipment.
In the integrated parameter monitor of the present invention, single-chip microcomputer is selected the TBGA encapsulation mode, relatively the LQFP encapsulation mode have less volume, better heat dispersion and electrical property, chip to have stronger anti-interference and noiseproof feature, good stability and a close structure firm, the long-time on-line operation demand of the equipment that is more suitable for., except adopting software, the Anti-Jamming Techniques such as digital filtering of the prior art, RAM data protection and error correction, also strengthen especially the Software Anti-interference program function: the design trap tech, the flight distance order is run in interception; And design " house dog " technology, make program disengaging " endless loop " etc.Further the safeguards system operation has good interference free performance and reliability.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. medical molecular sieve oxygen generation system integration parameter monitor, comprise single-chip microcomputer, it is characterized in that also comprising that described single-chip microcomputer is connected with the A/D modular converter, the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, four-operational amplifier, the signal output port of the 5th operational amplifier and the 6th operational amplifier is connected in series respectively oxygen sensor, pressure transducer, temperature sensor, carbon monoxide transducer, be connected with the input port of A/D modular converter after carbon dioxide sensor and humidity sensor, the output port of described A/D modular converter is connected with the input port of single-chip microcomputer, the dual output transformer is connected with single-chip microcomputer, the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, four-operational amplifier, the 5th operational amplifier, the 6th operational amplifier, touch screen controller respectively, and little power consumption direct current transmitter is connected with the dual output transformer, external two high precision digital-to-analog converters of described single-chip microcomputer, the digital communication port, touch screen controller and integrated form lcd controller, two high precision digital-to-analog converters connect respectively the first analog quantity communication output port and the second analog quantity communication output port, TFT LCD liquid crystal display is connected with the integrated form lcd controller with touch screen controller respectively, touch screen controller peripheral hardware USB interface, oxygen concentration lower bound warning output relay, the high limit of oxygen concentration warning output relay, carbon monoxide overload alarm output relay, carbon dioxide overload alarm output relay, humidity overload alarm output relay and temperature over-range warning output relay connect single-chip microcomputer.
2. a kind of medical molecular sieve oxygen generation system integration parameter monitor as claimed in claim 1, it is characterized in that: described TFT LCD liquid crystal display is connected with the dual output transformer with touch screen controller, the dual output transformer comprises rectifier circuit B1, rectifier circuit B1 and capacitor C 1, capacitor C 2, the compound filtering circuit that inductance L 5 combines is connected and passes through resistance R 1, resistance R 2 and stabilivolt W1 connect output 5V DC voltage, to be transformed into direct current by the 100VAC alternating current that power transformer 220V AC becomes, ripple in the elimination rectifier output voltage, electric capacity, inductance also has flat ripple effect, the 5V DC voltage is converted into 3.6VDC by the LM2596S/DAJ adjustable voltage stabilizer, the LM2596S/DAJ adjustable voltage stabilizer is by comparer, reference voltage source, oscillator, the formations such as driver, the LM2596S/DAJ adjustable voltage stabilizer is connected with input filter capacitor C13, inductance L 4, diode D15 and storage capacitor C17.
3. a kind of medical molecular sieve oxygen generation system integration parameter monitor as claimed in claim 1, it is characterized in that: described digital communication port is standard RS-232C/RS-485 digital communication port, it adopts RS232/RS485 standard handovers chip S2-485 to realize that the existing RS232 interface of computing machine and RS485 interface communicate function, RS232/RS485 standard handovers chip is connected with RS232 standard 9 needle interfaces on one side, and another side is connected with the RS485 bus.
4. a kind of medical molecular sieve oxygen generation system integration parameter monitor as claimed in claim 1, it is characterized in that: described the first analog quantity communication output port and the second analog quantity communication output port are respectively 4-20mA output port and 0-5V/0-10V DC output port.
5. a kind of medical molecular sieve oxygen generation system integration parameter monitor as claimed in claim 1, it is characterized in that: the output port of described A/D modular converter is connected with the input port of single-chip microcomputer, single-chip microcomputer is with the parameters that collects, carry out respectively the calculating of real time data Value Data, calibration and data block with the C language technology and transmit processing, realize the integrated measurement function of the parameter of medical oxygen generating system.
6. a kind of medical molecular sieve oxygen generation system integration parameter monitor as claimed in claim 1, it is characterized in that: the P3.0 of described single-chip microcomputer, P3.1, the GND pin respectively with the TX of touch screen controller, RX, the GND pin is corresponding to be connected, touch screen controller is connected with TFT LCD liquid crystal display by the VGA interface, the data that integrated form lcd controller and TFT LCD liquid crystal display receive after single-chip microcomputer is processed demonstrate colour, the data real-time information of Chinese also realizes the demonstration to sensor fault analytical information and parameter overload alarm information simultaneously, with important information is kept in historical data base, realize data instantaneous value/history value function for monitoring.
7. a kind of medical molecular sieve oxygen generation system integration parameter monitor as claimed in claim 1, it is characterized in that: described single-chip microcomputer model is the MSP430 series monolithic, described touch-screen adopts the very color touch-screen of TFTLCD, described oxygen concentration sensor adopts the fuel tank lambda sensor, described temperature sensor adopts contactless thermoelectricity dependent sensor, described pressure transducer adopts gas pressure sensor, and described humidity sensor adopts humitidy capacitor sensor.
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| WO2020133460A1 (en) * | 2018-12-29 | 2020-07-02 | 青岛精安医疗科技有限责任公司 | Oxygen production system and method |
| CN113138210A (en) * | 2021-06-22 | 2021-07-20 | 电子科技大学 | Self-adaptive local Gaussian temperature and humidity compensation method for intelligent gas sensor |
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Application publication date: 20131120 |