CN209102185U - Contactless liquid level sensor - Google Patents
Contactless liquid level sensor Download PDFInfo
- Publication number
- CN209102185U CN209102185U CN201822263407.XU CN201822263407U CN209102185U CN 209102185 U CN209102185 U CN 209102185U CN 201822263407 U CN201822263407 U CN 201822263407U CN 209102185 U CN209102185 U CN 209102185U
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- China
- Prior art keywords
- sensor body
- sensor
- liquid level
- anchor ear
- electrode
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Abstract
The utility model belongs to sensor technical field more particularly to a kind of contactless liquid level sensor.Including sensor body and be arranged in sensor body upper and lower ends top electrode and lower electrode, the upper end of sensor body is arranged in by connecting rod for the top electrode, axis connects between the connecting rod and sensor body, the lower end of sensor body is arranged in by auxiliary rod for the lower electrode, axis connects between the auxiliary rod and sensor body, annular anchor ear is provided in the sensor body, the annular anchor ear is vertically arranged with sensor body, and the annular anchor ear is provided with anchor ear opening far from one end of sensor body.The utility model provides a kind of contactless liquid level sensor, it is close to the structure design of infusion bottle by the way that entire contactless liquid level sensor to be made into, the principle of capacitor is cooperatively formed using electrode and infusion bottle, while effectively being measured to medicine company in infusion bottle, structure is simplified, it is made to facilitate popularization and use.
Description
Technical field
The utility model belongs to sensor technical field more particularly to a kind of contactless liquid level sensor.
Background technique
The liquid level sensor for carrying out the detection of liquid level generally has float-ball type sensor and metal probe formula sensor.Float-ball type
Sensor makes rotatably to be installed on using the movement of the float moved up and down according to the displacement for the liquid level for wanting measurement
The circular magnet rotation of sensor housing, detects the week in magnet using detection circuit of the configuration in sensor shell body
Enclose the variation of the magnetic flux density of generation.This liquid level sensor depends on the movement of float, and sensitivity is not generally high, and installs
Mode and setting angle are all relatively more limited.Metal probe formula sensor is the resistance that can be used for perceiving water level or liquid surface variation
Formula water level sensor, by the multiple resistance being serially connected and its probe of extraction, or by the continuously distributed resistor rod of resistance (item,
Pipe) or wind resistance wire outside the insulated plastic charge bar and be made.By device built-in resistor with surveyed liquid with partially electronically conductive
The principle of characteristic realizes that the all-in resistance and sensor of sensor are submerged in water or the intracorporal depth of liquid has good linear pass
System can obtain sensor by the resistance value of measurement sensor and submerge in water or the intracorporal depth value of liquid.
But either float-ball type sensor or metal probe formula sensor, it requires directly to contact with liquid, is
This, devises contactless liquid level sensor at the characteristics of people are according to capacitor, and contactless liquid level sensor utilizes electrode and storage
Liquid container constitutes a capacitor, and then obtains the height of liquid level in container, the medical venous transfusion of above-mentioned principle effective solution
The problem of middle liquid level warning, but structure is complicated for the contactless liquid level sensor in existing medical venous transfusion, higher cost,
Thus, currently, most of hospitals also need family members to observe, but, with the use of smart phone, many entourages exist
During accompanying and attending to, because playing mobile phone, lead to the frequent generation of blood back thing, for this purpose, the utility model provide it is a kind of cost is relatively low and
Contactless liquid level sensor convenient to use.
Utility model content
Structure is complicated, the technology of higher cost is asked for above-mentioned existing contactless liquid level sensor for the utility model
Topic proposes a kind of reasonable design, simple structure and convenient processing and the contactless liquid level sensor for being suitable for venous transfusion.
In order to achieve the above object, the technical solution adopted in the utility model is that the utility model provides a kind of non-contact
Formula liquid level sensor, including sensor body and be arranged in sensor body upper and lower ends top electrode and lower electrode, it is described
The upper end of sensor body is arranged in by connecting rod for top electrode, and axis connects between the connecting rod and sensor body, under described
The lower end of sensor body is arranged in by auxiliary rod for electrode, and axis connects between the auxiliary rod and sensor body, the sensing
Annular anchor ear is provided on device ontology, the annular anchor ear is vertically arranged with sensor body, and the annular anchor ear is far from sensing
One end of device ontology is provided with anchor ear opening.
Preferably, the top electrode is in the form of annular discs to be arranged in the one end of connecting rod far from sensor body, the lower electricity
The one end of auxiliary rod far from sensor body is arranged in anchor ear shape in pole.
Preferably, the annular anchor ear includes being fixed on the metal clips of sensor body two sides and being sleeved on metal
Rubber sleave on elastic slice.
Compared with prior art, it is the advantages of the utility model with good effect,
1, the utility model provides a kind of contactless liquid level sensor, by doing entire contactless liquid level sensor
At the structure design for being close to infusion bottle, the principle of capacitor is cooperatively formed using electrode and infusion bottle, effectively to medicine in infusion bottle
While industry measures, structure is simplified, it is made to facilitate popularization and use.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram for the contactless liquid level sensor that embodiment 1 provides；
In above each figure, 1, sensor body；2, connecting rod；3, top electrode；4, auxiliary rod；5, lower electrode；6, annular is embraced
Hoop；61, anchor ear is open.
Specific embodiment
It is with reference to the accompanying drawing and real in order to be more clearly understood that the above objects, features, and advantages of the utility model
Example is applied to be described further the utility model.It should be noted that in the absence of conflict, embodiments herein and reality
The feature applied in example can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other modes described herein are different from, therefore, the utility model is not limited to be described below
The limitation of the specific embodiment of specification.
Embodiment 1, as shown in Figure 1, the present embodiment aims to solve the problem that the non-contact level sensing applied in medical transfusion
Device the technical issues of structure is complicated, higher cost, for this purpose, contactless liquid level sensor provided in this embodiment, including sensing
Device ontology 1 and be arranged in 1 upper and lower ends of sensor body top electrode 3 and lower electrode 5, in the present embodiment, sensor sheet
The contact surface of body 1 and infusion bottle is cambered surface, and the purpose designed in this way subtracts mainly for being bonded sensor body 1 with infusion bottle
Few space is provided with circuit board and electricity to facilitate one piece of itself and infusion bottle to be placed on infusion support in sensor body 1
Source, in the present embodiment, power supply are button cell, are mainly used for providing 6V DC power supply to circuit board, certainly, in sensor
Pin is additionally provided on ontology 1, it is convenient to be connect with other electric appliances, realize the work such as alarm.
Top electrode 3, lower electrode 5 and infusion bottle are mainly constituted a capacitor by the present embodiment.Circuit board is to top electrode 3
Apply the pulsed dc voltage an of -6V with lower electrode 5, in this way, having potential difference between top electrode 3 and lower electrode 5, thus exists
A stable electric field is formd between top electrode 3 and lower electrode 5.The energization of pulsed direct current and off-position alternate.
In energized state, since capacitor has the characteristic of separated by direct communication, actually charge to capacitor.In energized state,
Capacitor electric discharge, can judge capacitance by the discharge time of capacitor at this time.When infusion bottle is empty, inner space is full of sky
Gas.Air constitutes the dielectric of capacitor, can measure a basic capacitance C0 at this time.When in infusion bottle there are when liquid, liquid
Body may be constructed a part of dielectric of capacitor, can measure a capacitance C1 at this time.Since the dielectric of liquid-to-air is normal
Number is different, therefore C1 and C0 be not also identical, and the two is subtracted each other, and capacitive differential Δ C, Δ C=C1-C0 is obtained, it is hereby achieved that defeated
The liquid level of liquid in liquid bottle.Capacitive differential Δ C and the liquid level of liquid in infusion bottle are substantially linear, it is possible thereby to supervise in real time
Survey liquid level.
In view of top electrode 3 needs the position for the top center that infusion bottle is arranged in that can accurately measure infusion bottle
Liquid liquid level and top electrode 3 needs be bonded with infusion bottle, for this purpose, top electrode 3 pass through connecting rod 2 setting in sensor body
1 upper end, axis connects between connecting rod 2 and sensor body 1, in addition, in the present embodiment, top electrode 3, which is that soft copper plate is soft, to be led
The soft electric conductor such as electric body or conductive rubber, in this way, top electrode 3 is bonded with infusion bottle by the angle for adjusting connecting rod 2,
Herein it should be understood that infusion bottle is that vial or plastic bottle are ok.
Equally, in order to cooperate lower electrode 5 and top electrode 3, sensor body 1 is arranged in by auxiliary rod 4 in lower electrode 5
Lower end, axis connects between auxiliary rod 4 and sensor body 1, and auxiliary rod 4 is arranged far from sensor body 1 in anchor ear shape in lower electrode 5
One end, the purpose being arranged so mainly enables lower electrode 5 be buckled on the bottleneck of infusion bottle, middle part is in, with top electrode 3
Complete cooperation, lower electrode 5 due to using connecting by the way of buckle with infusion bottle, can be that soft electric conductor can also be with
For metal electrode.
In the present embodiment, in order to make the cooperation of top electrode 3 Yu lower 5 structure of electrode, the setting in the form of annular discs of top electrode 3 is even
The one end of extension bar 2 far from sensor body 1.
In order to be capable of fixing sensor body 1 on infusion bottle, annular anchor ear 6, ring are provided in sensor body 1
Shape anchor ear 6 is vertically arranged with sensor body 1, and annular anchor ear 6 is provided with anchor ear opening 61 far from one end of sensor body 1.
In this way, sensor body 1 is fixed on infusion bottle using annular anchor ear 6, meanwhile, in the effect that lower electrode 5 and connecting rod 2 cooperate
Under, it completes to fix.
Annular anchor ear 6 can be with plastic material, or other structures, in the present embodiment, annular anchor ear 6 include fixing
Metal clips in 1 two sides of sensor body and the rubber sleave that is sleeved on metal clips, utilize the elasticity of metal clips
It realizes the clamping to infusion bottle, improves frictional force using rubber sleave, it is ensured that fixed stability.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation is applied to other fields, but all without departing from the content of the technical scheme of the utility model, according to this reality
With novel technical spirit any simple modification, equivalent variations and remodeling to the above embodiments, it is practical new to still fall within this
The protection scope of type technical solution.
Claims (3)
1. a kind of contactless liquid level sensor, which is characterized in that including sensor body and be arranged in sensor body
The upper end of sensor body, the connecting rod are arranged in by connecting rod for the top electrode at lower both ends and lower electrode, the top electrode
Axis connects between sensor body, and the lower electrode is arranged in the lower end of sensor body by auxiliary rod, the auxiliary rod with
Axis connects between sensor body, and annular anchor ear is provided in the sensor body, and the annular anchor ear and sensor body are hung down
Straight setting, the annular anchor ear are provided with anchor ear opening far from one end of sensor body.
2. contactless liquid level sensor according to claim 1, which is characterized in that the top electrode setting in the form of annular discs
In the one end of connecting rod far from sensor body, one of auxiliary rod far from sensor body is arranged in anchor ear shape in the lower electrode
End.
3. contactless liquid level sensor according to claim 2, which is characterized in that the annular anchor ear includes being fixed on
The metal clips of sensor body two sides and the rubber sleave being sleeved on metal clips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822263407.XU CN209102185U (en) | 2018-12-31 | 2018-12-31 | Contactless liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822263407.XU CN209102185U (en) | 2018-12-31 | 2018-12-31 | Contactless liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209102185U true CN209102185U (en) | 2019-07-12 |
Family
ID=67163669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822263407.XU Expired - Fee Related CN209102185U (en) | 2018-12-31 | 2018-12-31 | Contactless liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209102185U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587489A (en) * | 2019-09-11 | 2019-12-20 | 唐山钢铁集团有限责任公司 | Automatic control device of grinding machine paper filtering system |
-
2018
- 2018-12-31 CN CN201822263407.XU patent/CN209102185U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587489A (en) * | 2019-09-11 | 2019-12-20 | 唐山钢铁集团有限责任公司 | Automatic control device of grinding machine paper filtering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190712 Termination date: 20191231 |