CN206378459U - A kind of bubble detection system of adjustable spacing - Google Patents
A kind of bubble detection system of adjustable spacing Download PDFInfo
- Publication number
- CN206378459U CN206378459U CN201720041279.7U CN201720041279U CN206378459U CN 206378459 U CN206378459 U CN 206378459U CN 201720041279 U CN201720041279 U CN 201720041279U CN 206378459 U CN206378459 U CN 206378459U
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- sensor
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- bubble
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Abstract
The utility model discloses a kind of bubble detection system of adjustable spacing, including：One ultrasonic wave emission sensor receives sensor with a ultrasonic wave, the signal processing circuit of sensor electrical connection is received with ultrasonic wave, sliding equipment, a controller that sensor activity is connected is received with ultrasonic wave；The sliding equipment can adjust the relative distance between two sensorses；The controller is electrically connected with signal processing circuit and sliding equipment respectively.Bubble detection system of the present utility model is by improving the connection of two sensorses, and the spacing between the two is dynamically adjustable, so as to realize flexible detection, and is not limited to a certain size, the woven hose of some materials, and substantially increases the confidence level of detection.
Description
Technical field
The utility model belongs to medical transfusion field, and in particular to a kind of bubble detection system of adjustable spacing.
Background technology
Bubble detection is widely used in industry, the various medicine equipments that pharmaceutical engineering and hospital use.Especially cure
Treat in apparatus, such as infusion system, dialysis system or heart-lung machine, its reliability and stability is directly connected to the life peace of people
Entirely.
Current Cleaning Principle is all based on ultrasonic wave and detects bubble air is with the propagation characteristic in liquid different.
Ultrasonic signal is different with attenuation characteristic with aerial spread speed in a liquid.Generally it is made up of 2 sonacs,
One transmitting, a reception.Emission sensor sends ultrasonic wave, and ultrasonic wave is (or interior by liquid delivery line wall and internal decoction
Portion's bubble) reception sensor is then transferred to, then (mainly amplify) after processing via signal processing circuit, then send control to
Device processed or control circuit are judged.
It will be apparent that the spacing of sensor, size (contact area of influence and sonac, Yi Jixin of transfer conduit
Number diffusion path length), transfer conduit material characteristic can be all had influence on up to the time and size for receiving sensor.And existing market
On sensor be constant spacing, and fluid transmission lines (such as woven hose) manufacturer is numerous, and specification is numerous, material
Matter property difference is very big, and this make it that the signal for receiving sensor reception is extremely complex, it is difficult to set a judgment threshold to distinguish
There is bubble-free.Such as very thick very hard pipeline, even if having bubble, reach receive sensor signal time it is still shorter, amplitude
It is still larger, reach degree when having liquid.And some pipelines are relatively thin softer, though it is internal without bubble, but pass to reception sensor
Time it is still longer, signal amplitude is smaller, identical with characteristics of signals when having bubble.
When so Different hospital uses different infusion pipelines, there is the differentiation border overlay of bubble-free, detection electricity below
Road can not correctly distinguish bubble-free, and this causes great risk to the safe handling of medicine equipment.
Utility model content
The utility model in view of the shortcomings of the prior art, a kind of bubble detection system of adjustable spacing of deducting a percentage.
Concrete technical scheme of the present utility model is as follows：
A kind of bubble detection system of adjustable spacing, including：One ultrasonic wave emission sensor is received with a ultrasonic wave and sensed
Device, the signal processing circuit with ultrasonic wave reception sensor electrical connection, the skate machine being connected with ultrasonic wave reception sensor activity
Structure, a controller；The sliding equipment can adjust the relative distance between two sensorses；The controller respectively with signal transacting
Circuit and sliding equipment electrical connection.
It is preferred that the sliding equipment includes a motor and the sliding block and sliding block fixed with ultrasonic wave reception sensor
The slide rail of cooperation, the sliding block is connected in its glide direction with motor output shaft spiral；The motor is electrically connected with the controller.
It is preferred that the detecting system also includes a display screen and a keyboard, the two is electrically connected with controller, for hand
The relative distance of dynamic adjustment two sensorses.
Bubble detection system of the present utility model is by improving the connection of two sensorses, and the spacing between the two is dynamically adjustable,
So as to realize flexible detection, and a certain size, the woven hose of some materials are not limited to, and substantially increase the credible of detection
Degree.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model；
Fig. 2 is that signal of the present utility model sends theory diagram；
Fig. 3 is signal reception processing theory diagram of the present utility model；
Fig. 4 is signal transmission circuit figure of the present utility model；
Fig. 5 is signal receiving processing circuit figure of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, utility model is described in detail.
Referring to shown in Fig. 1 to Fig. 3, the utility model provides a kind of bubble detection system of adjustable spacing, including：One ultrasound
Ripple emission sensor 1 and a ultrasonic wave receive sensor 2, the signal processing circuit 3 electrically connected with ultrasonic wave reception sensor 2,
Sliding equipment 4, a controller 5 that sensor 2 is flexibly connected are received with ultrasonic wave；The sliding equipment 4 can adjust two sensings
Relative distance between device 1,2；The controller 5 is electrically connected with signal processing circuit 3 and sliding equipment 4 respectively.
The sliding equipment 4 includes a motor 41 and one and receives sliding block 42 and sliding block that sensor 2 is fixed with ultrasonic wave
42 slide rails 43 coordinated, the sliding block 42 is connected in its glide direction with the output shaft spiral of motor 41；The motor 41 and control
Device 5 processed is electrically connected.
The detecting system also includes a display screen 6 and a keyboard 7, and the two is electrically connected with controller 5, for adjusting manually
The relative distance of whole two sensorses 1,2.
In the utility model, the position of ultrasonic wave emission sensor 1 is fixed, and ultrasonic wave receives sensor 2 and exported by motor
Axle drives and moved left and right, and motor 41 controls direction of rotation and displacement by controller 5.Certainly, launch and receive sensor
Position also can mutually exchange, receive sensing station fix, emission sensor may move.
Fig. 4 show the embodiment of drive circuit one of sensor, and Y2 is crystal oscillator, and U1 is signal generation and drives IC, L1,
L2, C1, C2, R1 are filter network, and US2 is ultrasonic wave emission sensor.Y2 and U1 produces ultrasonic signal, after filtering network
Afterwards, ultrasonic wave emission sensor is sent to, electric signal is changed into ultrasonic wave and sent by supercritical ultrasonics technology body sensor.
Fig. 5 show the embodiment of ultrasonic signal enhanced processing one, and US1 is ultrasonic reception sensor, and C34 and R33 are filtering
Circuit, USsig+/USsig- is electric signal, and U6A, U6B are operational amplifier, and QP-SIG is the output signal after processing.US1 connects
Ultrasonic signal is received, electric signal USsig+/USsig- is then converted into, is filtered by RC, is then put again by two-stage calculation
Big device amplification, is finally transmitted to controller below or control circuit.
The gap length sent and received between sensor 1,2 of bubble detection system of the present utility model is adjustable, regulation
Principle is as follows：
When using thinner and softer infusion pipeline 8, if gap is larger, infusion pipeline 8 and two sensorses 1,2 contact surfaces
Product is smaller, and contact is not also close, the more difficult transmission of signal, when reaching ultrasonic wave reception sensor 2, no matter there is bubble-free, signal
Amplitude is smaller, behind signal processing circuit 3 it is more difficult distinguish.Now, if reducing the gap for sending and receiving sensor 1,2,
So that infusion pipeline 8 increases with two sensorses 1,2 contacts area, contact closer, then greatly facilitate signal transmission so that have
The time that the signal of liquid (bubble-free) reaches reception sensor is greatly shortened, and amplitude is greatly increased.And for having during bubble
Signal, because signal will also extend passing time and decay by bubble, so as to get shorten up to the time for receiving sensor without obvious,
Signal amplitude is without significantly increasing.So, the sensor big relative to gap, the small sensor in gap has the difference of bubble-free significantly
Increase, the differentiation of highly beneficial signal processing circuit later 3.
When with relatively thick and harder liquid infusion pipeline 8 (channel wall is thicker), if gap is smaller, the transmission gas in pipeline
Steeping length can be smaller, and transmission sectional area can be bigger, then signal is shorter by time during bubble, decays also smaller, with bubble-free
When difference less, behind signal processing circuit be difficult that differentiation has bubble-free.It can now be tuned up sensor gap is sent and received,
Bubble length in pipeline also becomes big, and transmission sectional area diminishes, so as to get the time up to reception sensor is relative to gap hour
Greatly prolong, amplitude is also greatly reduced relative to gap hour.If in pipeline during bubble-free (having liquid), because signal is in liquid
Quickly, decay spread speed in body very little.Signal time and changes in amplitude very little before and after adjustment, are adjusted by gap length
Influence very little.This to have when gap is big the difference of bubble-free to become big, and highly beneficial signal processing circuit later 3, which is distinguished, to be whether there is
Bubble.
As above told, by adjusting sensor between gap length be suitable for size and the different infusion pipeline of characteristic.
Referring to figs. 1 to Fig. 5, during work, ultrasonic wave emission sensor 1 produces ultrasonic signal, and signal is transmitted by liquid
Pipeline and internal decoction reach and receive sensor 2, receive sensor 2 and ultrasonic signal is converted into electric signal again, electric signal leads to
Cross and send controller 5 after signal processing circuit 3 to.
If infusion pipeline is softer or size is smaller, the electric signal that controller 5 is received will be smaller, even if there is liquid
Body, signal amplitude does not reach the threshold value that controller 5 is thought to have liquid still.Now, controller 5 can controlled motor 41 rotate, electricity
Machine 41 is driven by sliding block 42 again receives the direction movement that sensor 2 diminishes to gap.As the gap between two sensorses 1,2 becomes
Small, infusion pipeline 8 can also be extruded and be close to two sensorses 1,2, and can also become big with the contact area of two sensorses 1,2, more
Many ultrasonic activation signals reach reception sensor 2 by infusion pipeline 8, and bigger telecommunications can be converted to by receiving sensor 2
Number, then controller 5 is reached by signal processing circuit 3, controller 5 receives bigger electric signal, when signal reaches controller 5
Think the threshold value for having water, stop motor 41 at once and rotate.So, by reducing two sensorses 1,2 gaps, bubble detection system is just
The less infusion pipeline 8 of this softer or size can be supported.Because there is signal during bubble can be smaller, detecting system identification bubble be not
It is impacted.
If woven hose pipeline is thicker, or harder, signal transmission face is very big, and the distance transmitted in circuit air (declines
Subtract distance) can be very short, signal is easy to pass through, then the signal that controller is received can be very big, even if so that there is bubble, it would still be possible to
There is threshold value during liquid due to signal serious offense, without being identified.Now, controller can control motor and rotate, and pass through screw rod
Drive and receive sensor towards the big direction movement of gap change, gap becomes big so that the signal that controller is received diminishes, and works as signal
Threshold value when small mistake has liquid, bubble is just identified.And because signal when having liquid is still greater than threshold value, identification has liquid not
It is impacted.
As shown in figure 1, above-mentioned regulation process, can be automatically performed with system, display 6 and keyboard 7 can be also added, by artificial
Operation is completed.Benefit during by manually operating is, operator can be according to the feedback data of display, between adjusting repeatedly between sensor
Gap, has taken into account liquid and bubble, makes both have enough surpluses, and work is more stablized.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model is disclosed, according to this practicality
New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (3)
1. a kind of bubble detection system of adjustable spacing, it is characterised in that including：One ultrasonic wave emission sensor and a ultrasonic wave
Sensor is received, the signal processing circuit of sensor electrical connection is received with ultrasonic wave, is connected with ultrasonic wave reception sensor activity
Sliding equipment, a controller；The sliding equipment can adjust the relative distance between two sensorses；The controller respectively with
Signal processing circuit and sliding equipment electrical connection.
2. the bubble detection system of adjustable spacing according to claim 1, it is characterised in that the sliding equipment includes one
Motor and a sliding block that sensor fixation is received with ultrasonic wave, the slide rail coordinated with sliding block, the sliding block is in its glide direction
It is connected with motor output shaft spiral；The motor is electrically connected with the controller.
3. the bubble detection system of adjustable spacing according to claim 1 or 2, it is characterised in that the detecting system is also wrapped
A display screen and a keyboard are included, the two is electrically connected with controller, the relative distance for manually adjusting two sensorses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720041279.7U CN206378459U (en) | 2017-01-13 | 2017-01-13 | A kind of bubble detection system of adjustable spacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720041279.7U CN206378459U (en) | 2017-01-13 | 2017-01-13 | A kind of bubble detection system of adjustable spacing |
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| Publication Number | Publication Date |
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| CN206378459U true CN206378459U (en) | 2017-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037125A (en) * | 2017-01-13 | 2017-08-11 | 深圳市好克医疗仪器股份有限公司 | A kind of bubble detection system of adjustable spacing |
-
2017
- 2017-01-13 CN CN201720041279.7U patent/CN206378459U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037125A (en) * | 2017-01-13 | 2017-08-11 | 深圳市好克医疗仪器股份有限公司 | A kind of bubble detection system of adjustable spacing |
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