CN205826594U - A kind of portable medical compressed air oil-containing amount detecting device - Google Patents
A kind of portable medical compressed air oil-containing amount detecting device Download PDFInfo
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- CN205826594U CN205826594U CN201620680611.XU CN201620680611U CN205826594U CN 205826594 U CN205826594 U CN 205826594U CN 201620680611 U CN201620680611 U CN 201620680611U CN 205826594 U CN205826594 U CN 205826594U
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- compressed air
- detecting device
- amount detecting
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Abstract
The utility model discloses a kind of portable medical compressed air oil-containing amount detecting device, it includes PID sensor, signal amplifier, controller, display module, voltage transformation module and lithium battery；Described lithium battery is that PID sensor, signal amplifier, controller and display module are powered by voltage transformation module, and PID sensor is connected with controller by signal amplifier, and display module is connected with controller.This utility model can solve the problem that operation is complicated.
Description
Technical field
This utility model relates to medical compressed air oil-containing amount detecting device.
Background technology
Medical oxygen supply system is also known as life-support system, and the most medical malleation compressed air is a kind of gas in this system
Body, in this gas, oil content is to evaluate an important indicator of this gas products quality, specifies oil-containing in GB 50571-2012
Amount: 0.1/Nm3, existing gas oil content measures to be typically necessary by the way of suitable and is quantitatively transferred to absorbing liquid or suction
Enclosure material, recycling analytical equipment quantitative determines, and main measuring methods has infrared spectrophotometer, uv-spectrophotometric
Method, gravimetric method, turbidimetry, gas chromatography, detection trachea method etc., there is no special instrument and equipment and directly measure medical compression
The oil content of air gas.
Medical compressed air is mainly used in the respirator of patient, anesthetic machine etc. provides positive pressure air to support patient respiration
Or surgery anesthesia, also participating in infant nursing, suck nebulae inhalation, surgical technique and tools drives, and medical equipment is dried, and dental equipment moves
Power etc., therefore the residual entail dangers to health to patient of oil and the safe and reliable operation of equipment, it is known that patient such as long-time suction
The blocking disabling damage such as entering oil laden air to be easy to get pneumonia, oil can cause respirator, anesthetic machine sensor, operating valve, increase equipment
Failure-frequency, thus pay the maintenance cost of costliness.
When being mainly derived from compressor compresses gas of oil point in the middle of medical compressed air gas, or container containing medium,
The pollution to it of the conveyance conduit material, and the gathering of Hydrocarbon in raw air, its existence can be with liquid
Microgranule exist aerosol form or with gaseous state macromole hydrocarbon exist oil vapour form.Owing to oilless (oil free) compressor is expensive,
And national standard still allows to use micro-hydraulic shrinking machine in systems, the most most of medical institutions still select containing hydraulic shrinking machine conduct
Air machinery, although take other measure in systems to improve the quality of gas, but as in running Support improper, still
There is the underproof risk of GAS QUALITY, thus jeopardize the safe operation of the healthy of patient and equipment.
Presently, there are following deficiency:
1, gas sampling and pre-treatment operation complexity, can not quickly detect；
2, assay accuracy is more by preposition sampling and process influence factor, detection operator's level and experience
Ask higher；
Though 3, gas detecting tube method can quickly detect, due to the restriction of Cleaning Principle, simply semiquantitative determination, it is only capable of substantially
Determine oil concentration scope in mensuration gas；
4, traditional analytical equipment volume is big, mobile difficulty, is not suitable for system installation site detection；
5, cost of determination is costly.
Utility model content
The purpose of this utility model is to propose a kind of portable medical compressed air oil-containing amount detecting device, and it can solve
The problem that operation is complicated.
In order to achieve the above object, the technical scheme that this utility model is used is as follows:
A kind of portable medical compressed air oil-containing amount detecting device, it includes PID sensor, signal amplifier, control
Device, display module, voltage transformation module and lithium battery；Described lithium battery is that PID sensor, signal are put by voltage transformation module
Big device, controller and display module are powered, and PID sensor is connected with controller by signal amplifier, display module and control
Device connects.
Preferably, described PID sensor includes drive circuit, ionization chamber and for irradiating the uviol lamp of described ionization chamber,
Described ionization chamber has gas access and gas outlet；Described voltage transformation module includes the first voltage conversion circuit, the second electricity
Voltage conversion circuit and tertiary voltage change-over circuit；Lithium battery is drive circuitry by the first voltage conversion circuit, so that institute
State drive circuit and drive uviol lamp work to the voltage signal that uviol lamp output pulse frequency is 90-110KHz；Lithium battery passes through
Second voltage conversion circuit is more than the DC voltage of 200V to ionization chamber output；Lithium battery is letter by tertiary voltage change-over circuit
Number amplifier, controller and display module are powered.
Preferably, the model of described controller is ADuCM361.
Preferably, described display module is LCM display.
Preferably, this portable medical compressed air oil-containing amount detecting device also include the operation that is connected with controller by
Key.
Preferably, this portable medical compressed air oil-containing amount detecting device also includes the LED instruction being connected with controller
Lamp.
Preferably, a low pass filter it is also associated with between signal amplifier and controller.
Compared to existing technology, the beneficial effects of the utility model are:
1, without carrying out any sampling pre-treatment during detection, detect easy and simple to handle；
2, completely eliminate the sampling preposition process interference factor to testing result, it is ensured that testing result accurately with credible
Degree；
3, can accurate quantitative analysis intuitively show the oil content of detected gas, it is ensured that source of the gas quality is directly perceived and safety；
4, detection node and cycle can be made by oneself by user, all want detection environment, place and detection operator without special
Ask；
5, no consumption product in detection, secondary check fee is with low cost.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the portable medical compressed air oil-containing amount detecting device of this utility model preferred embodiment.
Detailed description of the invention
Below, in conjunction with accompanying drawing and detailed description of the invention, this utility model is described further:
As it is shown in figure 1, a kind of portable medical compressed air oil-containing amount detecting device, it includes that PID sensor, signal are put
Big device, low pass filter, LED light, operation button, controller, display module, voltage transformation module and lithium battery.Described
Lithium battery is PID sensor, signal amplifier, low pass filter, LED light, operation button, control by voltage transformation module
Device processed and display module are powered, and PID sensor passes sequentially through signal amplifier, low pass filter is connected with controller, and LED indicates
Lamp, operation button and display module are all connected with controller.The present embodiment uses lithium battery power supply, it is achieved portability.
Concrete, described PID sensor includes drive circuit, ionization chamber and for irradiating the uviol lamp of described ionization chamber,
Described ionization chamber has gas access and gas outlet；Described voltage transformation module includes the first voltage conversion circuit, the second electricity
Voltage conversion circuit and tertiary voltage change-over circuit；Lithium battery is drive circuitry by the first voltage conversion circuit, so that institute
State drive circuit and drive uviol lamp work to the voltage signal that uviol lamp output pulse frequency is 90-110KHz；Lithium battery passes through
Second voltage conversion circuit is more than the DC voltage of 200V to ionization chamber output；Lithium battery is letter by tertiary voltage change-over circuit
Number amplifier, controller and display module are powered.The pulse frequency of the present embodiment is preferably 100KHz.
The controller of the present embodiment has analog-digital converter (ADC) and memorizer, and adoptable model is ADuCM361, i.e.
The controller of the present embodiment is low-power consumption precision analog microcontroller ADuCM361.Display module can use LCM display.
Below, the principle process of the present embodiment is illustrated.
1, ultimate principle:
Tested medical compressed air gas enters into PID sensor (optic ionized sensor) can produce current signal, warp
Crossing amplifier to amplify and after low-pass filtering, this voltage signal enters low-power consumption precision analog microcontroller ADuCM361 signals collecting
Circuit, this voltage is believed by 24 ADC under program control that utilize low-power consumption precision analog microcontroller ADuCM361 to carry
Number it is converted into digital signal, calculates the oil content of surveyed gas, deliver to demonstrate on LCM display gas oil content.
2, signals collecting
It is based on containing band conjugated double bond and phenyl ring in oily substance that PID sensor measures compressed air Oil in circulating gas content
Hydrocarbon compound, they have characteristic absorption at ultraviolet region, and meet langbobier law.When entering into PID sensing
Ionization will be produced during the gas molecules sorb high energy ultraviolet light of the ionization chamber of device, produce electronics and ion.Charged gas electric charge
Producing weak current by electrode collecting board, after signal amplifier circuit amplification and low-pass filtering, its signal voltage exports
Low-power consumption precision analog microcontroller.
2, signal conversion
Low-power consumption precision analog microcontroller circuit ADuCM361 is integrated microprocessor, and built-in integrated monokaryon can
24 sigma-deltas pattern number converter (ADC) of programming ADC output speed, 32 ARM CortexTM-M3 processor and Flash/
EE memorizer, and can power by battery.ADuCM361 not only can be directly connected to external precision sensor, and its programmable A DC exports
The signal voltage that signal gathering unit exports is carried out data acquisition and turns by 24 sigma-deltas pattern number converter (ADC) of speed
Changing, it fully meets system high-precision requirement.
3, the design of systems soft ware part and peripheral circuit
After system switches on power, system initialization, and start System self-test, after self-inspection is passed through, display OK enters to be checked.Make
User's detection sampling key in push button, system automatically begins to sampling, system continuous sampling 10 times, makes even through computing
Result is shown on LCM display by average.Its test result also can preserve in memory, for testing the statistical of system
Analysis.
The present embodiment can facilitate the oil content of the gas of different nodes in periodically or non-periodically detecting system, it is ensured that gas
Quality meets national standard.
It will be apparent to those skilled in the art that can technical scheme as described above and design, make other various
Corresponding change and deformation, and all these change and deformation all should belong to the protection of this utility model claim
Within the scope of.
Claims (8)
1. a portable medical compressed air oil-containing amount detecting device, it is characterised in that include that PID sensor, signal amplify
Device, controller, display module, voltage transformation module and lithium battery；Described lithium battery is that PID senses by voltage transformation module
Device, signal amplifier, controller and display module are powered, and PID sensor is connected with controller by signal amplifier, show mould
Block is connected with controller.
2. portable medical compressed air oil-containing amount detecting device as claimed in claim 1, it is characterised in that described PID passes
Sensor includes drive circuit, ionization chamber and for irradiating the uviol lamp of described ionization chamber, described ionization chamber have gas access and
Gas outlet；Described voltage transformation module includes the first voltage conversion circuit, the second voltage conversion circuit and tertiary voltage conversion
Circuit；Lithium battery is drive circuitry by the first voltage conversion circuit, so that described drive circuit exports arteries and veins to uviol lamp
Rush the voltage signal that frequency is 90-110KHz and drive uviol lamp work；Lithium battery passes through the second voltage conversion circuit to ionization chamber
The output DC voltage more than 200V；Lithium battery is signal amplifier, controller and display mould by tertiary voltage change-over circuit
Block is powered.
3. portable medical compressed air oil-containing amount detecting device as claimed in claim 2, it is characterised in that pulse frequency is excellent
Elect 100Khz as.
4. portable medical compressed air oil-containing amount detecting device as claimed in claim 1, it is characterised in that described controller
Model be ADuCM361.
5. portable medical compressed air oil-containing amount detecting device as claimed in claim 1, it is characterised in that described display mould
Block is LCM display.
6. portable medical compressed air oil-containing amount detecting device as claimed in claim 1, it is characterised in that also include and control
The operation button that device processed connects.
7. portable medical compressed air oil-containing amount detecting device as claimed in claim 1, it is characterised in that also include and control
The LED light that device processed connects.
8. portable medical compressed air oil-containing amount detecting device as claimed in claim 1, it is characterised in that signal amplifier
And it is also associated with a low pass filter between controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620680611.XU CN205826594U (en) | 2016-06-28 | 2016-06-28 | A kind of portable medical compressed air oil-containing amount detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620680611.XU CN205826594U (en) | 2016-06-28 | 2016-06-28 | A kind of portable medical compressed air oil-containing amount detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205826594U true CN205826594U (en) | 2016-12-21 |
Family
ID=57567819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620680611.XU Active CN205826594U (en) | 2016-06-28 | 2016-06-28 | A kind of portable medical compressed air oil-containing amount detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205826594U (en) |
-
2016
- 2016-06-28 CN CN201620680611.XU patent/CN205826594U/en active Active
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