CN209416449U - Multiple spot PCBA mould group liquid level sensor - Google Patents
Multiple spot PCBA mould group liquid level sensor Download PDFInfo
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- CN209416449U CN209416449U CN201920095015.9U CN201920095015U CN209416449U CN 209416449 U CN209416449 U CN 209416449U CN 201920095015 U CN201920095015 U CN 201920095015U CN 209416449 U CN209416449 U CN 209416449U
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- liquid level
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Abstract
The utility model discloses a kind of multiple spot PCBA mould group liquid level sensors comprising the liquid level detecting mould group and logic signal processor of at least more than one, the logic signal processor are connect with each liquid level detecting mould group respectively；The liquid level detecting mould group includes detecting capacitor and touches chip, the touch chip and detecting capacitance connection, and touches chip difference external power supply anode and ground wire；It is connected in parallel first capacitor and the second capacitor between positive pole and ground wire, it is in parallel with first capacitor to touch chip.Signal processor is connect with more than one liquid level detecting mould group so when liquid is close to sensor by the utility model, and the charge of the capacitor of sensor changes, and liquid level is higher, and capacitance variations are stronger, and liquid level is lower, and capacitance variations are smaller；For sensor without complicated mechanical structure, installation is simple, it is only necessary to the sensor is attached to the side of water tank, and the component produced is at low cost, can cross realization multiple spot or continuity point location.
Description
Technical field
It is field of position sensors, especially a kind of multiple spot PCBA mould group liquid level sensor the utility model relates to liquid.
Background technique
For at present, current water dispenser or coffee machine and some humidifications all use water tank with host discrete state, and
Sensor for detecting height of water level is chiefly used in magnetic switch or floating ball and tongue tube mould group, and their working principle base
This is identical, is all to allow floating ball to float on liquid by liquid height change in location comprising mechanical device and magnetic mode and orientation
The device on surface is detected to generate variation, but since above two detecting mode is required through mechanical part and magnetism
Device floating incudes the height of water in water, and there are the differences of water level control for different individuals.Secondly production installation is compared
Complexity has that there are stuck probabilities in use process simultaneously because the working principle includes mechanical device, and in addition above-mentioned device is more
Belong to import, the problem of element cost price itself is higher, and above scheme is due to structure limit value there can only be 1 point to carry out
Detecting can not form multiple spot or the detecting of continuous point.
Therefore, the existing technology needs to be improved and developed.
Utility model content
The purpose of the utility model is to provide a kind of multiple spot PCBA mould group liquid level sensors, it is intended to pass in solving existing liquid level
Sensor needs to measure by the way of mechanical device and magnetism, and production installation is more complicated, manufactures the at high cost of original part, with
And the technical issues of cannot achieve multiple spot, the detecting of continuous point.
In order to achieve the above object, the technical solution of the utility model are as follows: a kind of multiple spot PCBA mould group liquid level sensor,
Liquid level detecting mould group including at least more than one and logic signal processor for handling signal, the logical signal processing
Device is connect with each liquid level detecting mould group respectively；The liquid level detecting mould group includes detecting capacitor and touch chip, the touch
Chip and detecting capacitance connection, and touch chip difference external power supply anode and ground wire；It is in parallel between positive pole and ground wire to connect
First capacitor and the second capacitor are connect, it is in parallel with first capacitor to touch chip.
The multiple spot PCBA mould group liquid level sensor, wherein it further include being used to indicate the good indicating module of liquid level signal,
The indicating module and detecting capacitance connection；The indicating module includes light emitting diode and resistance, the resistance and light-emitting diodes
Pipe is connected in series.
The multiple spot PCBA mould group liquid level sensor, wherein the resistance value of the resistance is 1K.
The multiple spot PCBA mould group liquid level sensor, wherein the touch chip passes through pin and detecting capacitance connection.
The multiple spot PCBA mould group liquid level sensor, wherein the logic signal processor also connects with signal generator
It connects, signal generator is connect with external master control system.
The multiple spot PCBA mould group liquid level sensor, wherein the capacitance of the first capacitor is 10uf, the second capacitor
Capacitance be 0.1uf.
The utility model has the advantages that signal processor will be connect by the utility model with more than one liquid level detecting mould group, and liquid
Position detecting mould group is by touch chip and detecting capacitance connection, so the charge of the capacitor of sensor is sent out when liquid is close to sensor
Changing, liquid level is higher, and capacitance variations are stronger, and liquid level is lower, and capacitance variations are smaller；Sensor is without complicated machine
Tool structure, installation are simple, it is only necessary to the sensor are attached to the side of water tank, and the component produced is at low cost, energy
Cross realization multiple spot or continuity point location.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is a kind of structural block diagram of specific embodiment of the utility model.
Fig. 3 is the circuit diagram that chip is touched in the utility model liquid level detecting mould group.
Fig. 4 is the circuit diagram of the indicating module of the utility model.
Fig. 5 is that the detecting capacitor of the utility model corresponds to each pin and is correspondingly connected with circuit diagram.
Fig. 6 is that logic signal processor corresponds to the circuit diagram that each pin is correspondingly connected in the utility model.
Fig. 7 is that signal generator device corresponds to the circuit diagram that each pin is correspondingly connected in the utility model.
Fig. 8 is that the utility model installs practical structural schematic diagram.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, clear, develop simultaneously implementation referring to the drawings
The utility model is further described in example.
As shown in figures 1-8, the utility model discloses a kind of multiple spot PCBA mould group liquid level sensors, include 5 liquid levels and detect
Survey mould group 1 and the logic signal processor 2 for handling signal, the logic signal processor 2 respectively with each liquid level detecting
Mould group 1 connects；The liquid level detecting mould group 1 includes detecting capacitor 11 and touching chip 12, and the touch chip 12 and detecting are electric
Hold 11 connections, and touches chip 12 and distinguish external power supply anode and ground wire；The first electricity is connected in parallel between positive pole and ground wire
Appearance 6 and the second capacitor 7, it is in parallel with first capacitor 6 to touch chip 12.
5 liquid level detecting mould groups 1 respectively include detecting module A 100, detecting mould group B 101, detecting mould group C 102, detect
Survey mould group D 103 and detecting mould group E 104；Above-mentioned each detecting Mo Zu is connected in logic signal processor respectively；It can detect
The liquid of survey includes the liquid such as water, milk, oil；The quantity for detecting mould group simultaneously can be for 5, can also be less than 5 (still
Minimum no less than 2), each detecting mould group is a detecting point.
As shown in figure 8, the detecting module A 100 of the utility model, detecting mould group B 101, detecting mould group C 102, detecting
Mould group D 103 and detecting mould group E 104 pass through sticking double faced adhesive tape in plastic shell 400, and sensor is by being affixed directly to water
The side of case 300, because liquid all has electric conductivity, when liquid height is increased to capacitor detecting point, the parasitism of capacitor detecting point
Capacitor changes, and detecting mould group detects the electricity of corresponding points, can be according to the program output being previously set when changing
Corresponding level is to logical signal, and then logical signal is exported according to the corresponding signal of different points progress to master control system.
So the utility model facilitates installation, fixed without shell, be directly adhered to plastic shell, using double-sided adhesive
Installation is pasted, is installed and its simple.
Working principle: since liquid is equal to conductor, so parasitic electricity will be generated by detecting when liquid conduction in capacitor
Lotus transfer, therefore when sensor is close to liquid, since sensor is capacity effect detecting, when liquid is close to sensor,
Charge variation occurs for sensor capacitance, and liquid level is higher, and capacitance variations are stronger, and liquid level is lower, and capacitance variations are weaker；Liquid with
Height change and cause the spurious charge of sensor to be changed, therefore, when low liquid level, charge parasitizes sensor body,
When high liquid level, charge is exported by liquid.The utility model capacitive liquid level sensor be exactly by above-mentioned carry out liquid level into
Row detecting.
Preferably, the touch chip of the utility model is to close safe touch-control single-chip microcontroller BS83A04A-4.
Preferably, the liquid level detecting mould group of the utility model is independent detecting.
5 liquid level detecting mould groups, logic signal processor and indicating module of the utility model are integrated in PCBA board.
The multiple spot PCBA mould group liquid level sensor, wherein further include being used to indicate the good indicating module of liquid level signal
5, which connect with detecting capacitor 11；The indicating module 5 includes light emitting diode 50 and resistance 51, the resistance
51 are connected in series with light emitting diode 50, and light emitting diode can effectively place light emitting diode quilt by series with a resistor
It burns out, it is ensured that the liquid level of water tank can be explicitly known from indicating module.
The multiple spot PCBA mould group liquid level sensor, wherein the resistance value of the resistance 51 is 1K.
The multiple spot PCBA mould group liquid level sensor, wherein the touch chip 12 passes through pin and detecting capacitor 11
Connection.
The multiple spot PCBA mould group liquid level sensor, wherein the logic signal processor 1 also with signal generator 3
Connection, signal generator 3 are connect with external master control system 4.
The multiple spot PCBA mould group liquid level sensor, wherein the capacitance of the first capacitor 6 is 10uf, the second electricity
The capacitance for holding 7 is 0.1uf.
When in use, sensor is affixed directly to the product for needing to detect and is easy shell, and shell is other than metal
Plastic material.
Signal processor will be connect by the utility model with more than one liquid level detecting mould group, and liquid level detecting mould group
By touch chip and detecting capacitance connection, so the charge of the capacitor of sensor changes, liquid level when liquid is close to sensor
Height is higher, and capacitance variations are stronger, and liquid level is lower, and capacitance variations are smaller；Sensor is without complicated mechanical structure, installation
Simply, it is only necessary to the sensor is attached to the side of water tank, and the component produced is at low cost, can cross realization multiple spot or
Person's continuity point location.
It is preferred embodiments of the present invention above, the right of the utility model cannot be limited with this certainly
Range, it is noted that those of ordinary skill in the art, do not make the creative labor to the utility model technical side
The modification or equivalent replacement of case, without departure from the protection scope of technical solutions of the utility model.
Claims (6)
1. a kind of multiple spot PCBA mould group liquid level sensor, which is characterized in that including at least more than one liquid level detecting mould group and
For handling the logic signal processor of signal, the logic signal processor is connect with each liquid level detecting mould group respectively；Institute
It states liquid level detecting mould group to include detecting capacitor and touch chip, the touch chip and detecting capacitance connection, and touches chip point
Other external power supply anode and ground wire；Be connected in parallel first capacitor and the second capacitor between positive pole and ground wire, touch chip with
First capacitor is in parallel.
2. multiple spot PCBA mould group liquid level sensor according to claim 1, which is characterized in that further include being used to indicate liquid level
The good indicating module of signal, the indicating module and detecting capacitance connection；The indicating module includes light emitting diode and resistance, institute
It states resistance and light emitting diode is connected in series.
3. multiple spot PCBA mould group liquid level sensor according to claim 2, which is characterized in that the resistance value of the resistance is
1K。
4. multiple spot PCBA mould group liquid level sensor according to claim 1, which is characterized in that the touch chip is by drawing
Foot and detecting capacitance connection.
5. multiple spot PCBA mould group liquid level sensor according to claim 1, which is characterized in that the logic signal processor
It is also connect with signal generator, signal generator is connect with external master control system.
6. multiple spot PCBA mould group liquid level sensor according to claim 1, which is characterized in that the capacitor of the first capacitor
Value is 10uf, and the capacitance of the second capacitor is 0.1uf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920095015.9U CN209416449U (en) | 2019-01-21 | 2019-01-21 | Multiple spot PCBA mould group liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920095015.9U CN209416449U (en) | 2019-01-21 | 2019-01-21 | Multiple spot PCBA mould group liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209416449U true CN209416449U (en) | 2019-09-20 |
Family
ID=67943877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920095015.9U Active CN209416449U (en) | 2019-01-21 | 2019-01-21 | Multiple spot PCBA mould group liquid level sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN209416449U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849440A (en) * | 2019-12-03 | 2020-02-28 | 佛山金田申电子有限公司 | Liquid level detecting device for clamping pipe |
| DE102023106809A1 (en) | 2023-03-17 | 2024-09-19 | Emz-Hanauer Gmbh & Co. Kgaa | Household appliance |
-
2019
- 2019-01-21 CN CN201920095015.9U patent/CN209416449U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849440A (en) * | 2019-12-03 | 2020-02-28 | 佛山金田申电子有限公司 | Liquid level detecting device for clamping pipe |
| DE102023106809A1 (en) | 2023-03-17 | 2024-09-19 | Emz-Hanauer Gmbh & Co. Kgaa | Household appliance |
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