CN208588444U - A kind of contactless water level detection switch - Google Patents
A kind of contactless water level detection switch Download PDFInfo
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- CN208588444U CN208588444U CN201821215536.5U CN201821215536U CN208588444U CN 208588444 U CN208588444 U CN 208588444U CN 201821215536 U CN201821215536 U CN 201821215536U CN 208588444 U CN208588444 U CN 208588444U
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Abstract
The utility model discloses a kind of contactless water level detection switch, including single-chip microcontroller and detection circuit, the detection circuit includes IC chip, the GND pin of the IC chip is grounded, the VREG pin of IC chip is grounded by capacitor C1, the SEN pin of IC chip is grounded by capacitor C3, the CR pin of IC chip is grounded by capacitor C4, the VCC pin of IC chip connects 5V power supply, the 5V power supply is grounded by capacitor C2, the OUT pin of IC chip connects the output end of circuit, 5V power supply connects output end by resistance R1, the CX pin of IC chip passes through resistance R3 connection water-level detecting device.When water flows through out-of-date, the medium of water-level detecting device changes, and the direct-to-ground capacitance of water-level detecting device also changes therewith, and this variation is exported by OUT pin to be handled to single-chip microcontroller.SEN pin and CR pin are for adjusting sensitivity.It does not need for be inserted into water lead in this way, securely and reliably, and does not need non-magnetic metal tube or plastic tube, cost is relatively low, without carrying out complicated installation.
Description
Technical field
The utility model relates to particularly, be related to a kind of contactless water level detection switch.
Background technique
Water level detection switch is made of magnetic reed switch and floating ball, there is magnet ring in floating ball, in closed non-magnetic metal tube
Or one or more magnetic reed switch are set in plastic tube, conduit is then passed through into one or more floating balls for having magnet ring, and benefit
Floating ball and magnetic reed switch are controlled on relevant position with card slot, and floating ball rises or falls with liquid, goes to drive using ball internal magnet
The contact of dynamic magnetic red beginning, generates the movement of Push And Release, makees Liquid level or instruction.But market upper magnetic ring and non-magnetic metal
Pipe or plastic tube higher cost, installation is more complex, and installation cost is high, and the lead of Simultaneous Switching will be inserted into water, and there are electric leakage wind
Danger.
Utility model content
For overcome the deficiencies in the prior art, the utility model provide it is a kind of it is at low cost, installation is simple, safe and reliable non-
Contact water level detection switch,
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of contactless water level detection switch, including single-chip microcontroller and detection circuit, the detection circuit include IC chip,
The GND pin of the IC chip is grounded, and the VREG pin of IC chip is grounded by capacitor C1, and the SEN pin of IC chip passes through electricity
Hold C3 ground connection, the CR pin of IC chip is grounded by capacitor C4, and the VCC pin of IC chip connects 5V power supply, and the 5V power supply passes through
Capacitor C2 ground connection, the OUT pin of IC chip connect the output end of circuit, and 5V power supply is connected to output end by resistance R1, IC chip
CX pin passes through resistance R3 connection water-level detecting device.
Preferably, the water-level detecting device is water level detecting spring or induction detection lug, and device is simple, test spirit
It is quick, as a result accurately.
Preferably, the capacitance of described capacitor C1, C2, C3, C4 are 4.7nF, 0.1uF, 20pF, 10pF, guarantee that circuit is normal
Work, accurately measures.
Preferably, resistance R1, R3 resistance value is 10K Ω, 3K Ω, keeps the Current Voltage in circuit normal, is convenient for circuit
Work.
Preferably, the water level detection switch is located on the outside of water pipe, and water-level detecting device is attached on the outside of water pipe, convenient for direct
Sensed water level.
The utility model has the beneficial effects that
By above scheme it is found that water-level detecting device is connected with the CX pin of IC chip, when water flows through out-of-date, water level detecting
The medium of device changes, and the direct-to-ground capacitance of water-level detecting device also changes therewith, calculating of this variation Jing Guo IC chip
After except interference processing, is exported by the OUT pin of IC chip and handled to single-chip microcontroller.The SEN pin and CR of IC chip are managed
Foot is for adjusting sensitivity.It does not need for be inserted into water lead in this way, securely and reliably, and does not need non-magnetic metal tube
Or plastic tube, cost is relatively low, without carrying out complicated installation.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is this practical detection circuit structure diagram；
Specific embodiment
Referring to Fig.1, a kind of contactless water level detection switch, including single-chip microcontroller and detection circuit, the detection circuit packet
IC chip, the GND pin ground connection of the IC chip are included, the VREG pin of IC chip is grounded by capacitor C1, the SEN pipe of IC chip
Foot is grounded by capacitor C3, and the CR pin of IC chip is grounded by capacitor C4, and the VCC pin of IC chip meets 5V power supply, the 5V
Power supply is grounded by capacitor C2, and the OUT pin of IC chip connects the output end of circuit, and 5V power supply is connected to output end by resistance R1,
The CX pin of IC chip passes through resistance R3 connection water-level detecting device.
Water-level detecting device is connected with the CX pin of IC chip, when water flows through out-of-date, the medium generation of water-level detecting device
Variation, the direct-to-ground capacitance of water-level detecting device also change therewith, this to change after the calculating of IC chip and except interference processing,
It is exported by the OUT pin of IC chip and is handled to single-chip microcontroller.The SEN pin and CR pin of IC chip are sensitive for adjusting
Degree.Do not need in this way by lead be inserted into water in, securely and reliably, and do not need non-magnetic metal tube or plastic tube, cost compared with
It is low, without carrying out complicated installation.
The water-level detecting device is water level detecting spring or induction detection lug, and device is simple, and test is sensitive, as a result quasi-
Really.
The capacitance of described capacitor C1, C2, C3, C4 are 4.7nF, 0.1uF, 20pF, 10pF, guarantee that circuit works normally, essence
Locating tab assembly.
Resistance R1, R3 resistance value is 10K Ω, 3K Ω, keeps the Current Voltage in circuit normal, is worked convenient for circuit.
The water level detection switch is located on the outside of water pipe, and water-level detecting device is attached on the outside of water pipe, convenient for directly detecting water
Position.
The above is the better embodiment of the utility model, but the utility model is not limited to above-described embodiment,
As long as its technical effect for reaching the utility model with any same or similar means, should all fall into the protection model of the utility model
Within enclosing.
Claims (5)
1. a kind of contactless water level detection switch, including single-chip microcontroller and detection circuit, it is characterised in that: the detection circuit packet
IC chip, the GND pin ground connection of the IC chip are included, the VREG pin of IC chip is grounded by capacitor C1, the SEN pipe of IC chip
Foot is grounded by capacitor C3, and the CR pin of IC chip is grounded by capacitor C4, and the VCC pin of IC chip meets 5V power supply, the 5V
Power supply is grounded by capacitor C2, and the OUT pin of IC chip connects the output end of circuit, and 5V power supply is connected to output end by resistance R1,
The CX pin of IC chip passes through resistance R3 connection water-level detecting device.
2. a kind of contactless water level detection switch according to claim 1, it is characterised in that: the water-level detecting device
For water level detecting spring or induction detection lug.
3. a kind of contactless water level detection switch according to claim 1, it is characterised in that: the capacitor C1, C2,
The capacitance of C3, C4 are 4.7nF, 0.1uF, 20pF, 10pF.
4. a kind of contactless water level detection switch according to claim 1, it is characterised in that: resistance R1, R3 resistance
Value is 10K Ω, 3K Ω.
5. a kind of contactless water level detection switch according to claim 1, it is characterised in that: the water level detection switch
On the outside of water pipe, water-level detecting device is attached on the outside of water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821215536.5U CN208588444U (en) | 2018-07-30 | 2018-07-30 | A kind of contactless water level detection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821215536.5U CN208588444U (en) | 2018-07-30 | 2018-07-30 | A kind of contactless water level detection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208588444U true CN208588444U (en) | 2019-03-08 |
Family
ID=65542644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821215536.5U Active CN208588444U (en) | 2018-07-30 | 2018-07-30 | A kind of contactless water level detection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208588444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020258440A1 (en) * | 2019-06-28 | 2020-12-30 | 苏州优德通力科技有限公司 | Control system for detecting water flow in water pipe |
-
2018
- 2018-07-30 CN CN201821215536.5U patent/CN208588444U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020258440A1 (en) * | 2019-06-28 | 2020-12-30 | 苏州优德通力科技有限公司 | Control system for detecting water flow in water pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 11, Xinyou East Road, Shunde high tech Zone (Ronggui), Ronggui Bianjiao, Shunde District, Foshan City, Guangdong Province 528300 Patentee after: Guangdong Hailunbao household appliances Co.,Ltd. Address before: No. 11, Xinyou East Road, Shunde high tech Zone (Ronggui), Ronggui Bianjiao, Shunde District, Foshan City, Guangdong Province 528300 Patentee before: FOSHAN SHUNDE HELENBO ELECTRICAL APPLIANCE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |