CN206470014U - Pressure amplifying circuit in water flow switch pressure control plate - Google Patents
Pressure amplifying circuit in water flow switch pressure control plate Download PDFInfo
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- CN206470014U CN206470014U CN201720159962.0U CN201720159962U CN206470014U CN 206470014 U CN206470014 U CN 206470014U CN 201720159962 U CN201720159962 U CN 201720159962U CN 206470014 U CN206470014 U CN 206470014U
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- resistance
- electric capacity
- voltage comparator
- pressure
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Abstract
The utility model discloses the pressure amplifying circuit in water flow switch pressure control plate, including pressure sensor P2, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, voltage comparator U2A, voltage comparator U2B, electric capacity C1, electric capacity C2, electric capacity C4, electric capacity C8, the utility model detects pressure by pressure sensor P2, then voltage comparator U2A is being passed through, then voltage comparator U2B exports after the pressure signal of detection is amplified, the utility model includes pressure sensor P2, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, voltage comparator U2A, voltage comparator U2B, electric capacity C1, electric capacity C2, electric capacity C4, electric capacity C8, therefore component type and quantity are all few, therefore the utility model is simple in construction, cost is low, the utility model is provided with electric capacity C1, electric capacity C2, electric capacity C4, electric capacity C8, therefore strong antijamming capability, pressure signal output is stable.
Description
Technical field
The utility model is related to the pressure amplifying circuit in water flow switch pressure control plate.
Background technology
Pressure amplification circuit structure in existing water flow switch pressure control plate is complicated, and cost is high, output pressure signal
Antijamming capability is weak, and pressure signal output is unstable.
Utility model content
The purpose of this utility model is to overcome the shortcomings of that there is provided in a kind of water flow switch pressure control plate in existing product
Pressure amplifying circuit.
In order to achieve the above object, the utility model is achieved through the following technical solutions：
Pressure amplifying circuit in water flow switch pressure control plate, including pressure sensor P2, resistance R16, resistance R17,
Resistance R18, resistance R19, resistance R20, resistance R21, voltage comparator U2A, voltage comparator U2B, electric capacity C1, electric capacity C2, electricity
Hold C4, electric capacity C8, the pressure sensor P2 2 pins connection earth signal GND, 1 pin of the pressure sensor P2 passes through
Resistance R18 connection voltage comparators U2A reverse input end, 3 pins of the pressure sensor P2 pass through resistance R20 connections electricity
Comparator U2A input in the same direction is pressed, 4 pins of the pressure sensor P2 connect power supply VCC, the pressure sensor P2's
1 pin by electric capacity C2 connection earth signals GND, 3 pins of the pressure sensor P2 by electric capacity C8 connection earth signal GND,
The input in the same direction that electric capacity C4, the voltage comparator U2A are connected between 3 pins and 1 pin of the pressure sensor P2 leads to
Resistance R22 connection voltage comparators U2B output end is crossed, the reverse input end of the voltage comparator U2A is connected by resistance R16
Voltage comparator U2A output end is connect, the electric capacity C1 and resistance R16 is in parallel, the reverse input of the voltage comparator U2B
End connection voltage comparator U2B output end, the input in the same direction of the voltage comparator U2B is believed by resistance R21 connections
Number GND, the input in the same direction of the voltage comparator U2B by resistance R19 connection power supplys VCC, the voltage comparator U2A's
Output end connection resistance R17 one end, the other end of the resistance R17 is signal output end, the resistance of the resistance R19
It is identical with resistance R21 resistance.
The utility model also input in the same direction including electric capacity C7, the voltage comparator U2B passes through electric capacity C7 connections ground
Signal GND.
The utility model also output end including electric capacity C6, the voltage comparator U2B passes through electric capacity C6 connection earth signals
GND。
Power supply VCC described in the utility model is 5V.
The utility model also other end including electric capacity C5, the resistance R17 passes through electric capacity C5 connection earth signals GND.
The beneficial effects of the utility model are as follows：The utility model detects pressure by pressure sensor P2, then
Then exported after by voltage comparator U2A, voltage comparator U2B, the pressure signal of detection is amplified, this practicality is new
Type includes pressure sensor P2, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, voltage comparator
U2A, voltage comparator U2B, electric capacity C1, electric capacity C2, electric capacity C4, electric capacity C8, therefore component type and quantity are all few, therefore this
Utility model is simple in construction, cost is low, and the utility model is provided with electric capacity C1, electric capacity C2, electric capacity C4, electric capacity C8, therefore anti-interference
Ability is strong, and pressure signal output is stable.
Brief description of the drawings
Fig. 1 is circuit theory schematic diagram of the present utility model.
Embodiment
The technical solution of the utility model is described further with reference to Figure of description：
As shown in figure 1, the pressure amplifying circuit in water flow switch pressure control plate, including pressure sensor P2, resistance
R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, voltage comparator U2A, voltage comparator U2B, electric capacity
C1, electric capacity C2, electric capacity C4, electric capacity C8, the pressure sensor P2 2 pins connection earth signal GND, the pressure sensor P2
1 pin by resistance R18 connection voltage comparators U2A reverse input end, 3 pins of the pressure sensor P2 pass through electricity
Hinder R20 connection voltage comparators U2A input in the same direction, the 4 pins connection power supply VCC of the pressure sensor P2, the pressure
Force snesor P2 1 pin is connected by electric capacity C2 connection earth signals GND, 3 pins of the pressure sensor P2 by electric capacity C8
Electric capacity C4 is connected between ground signalling GND, the pressure sensor P2 3 pins and 1 pin, the voltage comparator U2A's
Input in the same direction passes through resistance R22 connection voltage comparators U2B output end, the reverse input end of the voltage comparator U2A
By resistance R16 connection voltage comparators U2A output end, the electric capacity C1 and resistance R16 is in parallel, the voltage comparator
U2B reverse input end connection voltage comparator U2B output end, the input in the same direction of the voltage comparator U2B passes through electricity
Resistance R21 connection earth signals GND, the voltage comparator U2B input in the same direction pass through resistance R19 connection power supply VCC, the electricity
Comparator U2A output end connection resistance R17 one end is pressed, the other end of the resistance R17 is signal output end, described
Resistance R19 resistance is identical with resistance R21 resistance, the output end output 0.5VCC of the voltage comparator U2B.Pressure sensing
Device P2 is ceramic pressure sensor MSL01.
As shown in figure 1, the utility model also includes electric capacity C7, the input in the same direction of the voltage comparator U2B passes through electricity
Hold C7 connection earth signals GND.
As shown in figure 1, the utility model also includes electric capacity C6, the output end of the voltage comparator U2B passes through electric capacity C6
Connect earth signal GND.
As shown in figure 1, power supply VCC described in the utility model is 5V.
The utility model as shown in Figure 1 also other end including electric capacity C5, the resistance R17 is believed by electric capacity C5 connections
Number GND.
The utility model detects pressure by pressure sensor P2, is then passing through voltage comparator U2A, voltage ratio
Compared with device U2B by the pressure signal of detection be amplified after then export, the utility model include pressure sensor P2, resistance R16,
Resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, voltage comparator U2A, voltage comparator U2B, electric capacity C1, electricity
Hold C2, electric capacity C4, electric capacity C8, therefore component type and quantity are all few, therefore the utility model is simple in construction, cost is low, this
Utility model is provided with electric capacity C1, electric capacity C2, electric capacity C4, electric capacity C8, therefore strong antijamming capability, and pressure signal output is stable.
It should be noted that listed above is only a kind of specific embodiment of the present utility model.Obviously, the utility model
Above example is not limited to, there can also be many deformations.In a word, one of ordinary skill in the art can disclose from the utility model
Content all deformations for directly exporting or associate, be considered as protection domain of the present utility model.
Claims (5)
1. the pressure amplifying circuit in water flow switch pressure control plate, it is characterised in that including pressure sensor P2, resistance R16,
Resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, voltage comparator U2A, voltage comparator U2B, electric capacity C1, electricity
Hold C2, electric capacity C4, electric capacity C8, the pressure sensor P2 2 pins connection earth signal GND, the pressure sensor P2 1 pipe
Pin passes through resistance R20 by resistance R18 connection voltage comparators U2A reverse input end, 3 pins of the pressure sensor P2
Connect voltage comparator U2A input in the same direction, the 4 pins connection power supply VCC of the pressure sensor P2, the pressure sensing
Device P2 1 pin is believed by electric capacity C2 connection earth signals GND, 3 pins of the pressure sensor P2 by electric capacity C8 connections
Number GND, connects electric capacity C4, the voltage comparator U2A's is in the same direction defeated between 3 pins and 1 pin of the pressure sensor P2
Enter output end of the end by resistance R22 connection voltage comparators U2B, the reverse input end of the voltage comparator U2A passes through electricity
R16 connection voltage comparators U2A output end is hindered, the electric capacity C1 and resistance R16 is in parallel, the voltage comparator U2B's
Reverse input end connection voltage comparator U2B output end, the input in the same direction of the voltage comparator U2B passes through resistance R21
Connection earth signal GND, the voltage comparator U2B input in the same direction pass through resistance R19 connection power supply VCC, the voltage ratio
One end of output end connection resistance R17 compared with device U2A, the other end of the resistance R17 is signal output end, the resistance
R19 resistance is identical with resistance R21 resistance.
2. the pressure amplifying circuit in water flow switch pressure control plate according to claim 1, it is characterised in that also including electricity
Hold C7, the input in the same direction of the voltage comparator U2B passes through electric capacity C7 connection earth signals GND.
3. the pressure amplifying circuit in water flow switch pressure control plate according to claim 1, it is characterised in that also including electricity
Hold C6, the output end of the voltage comparator U2B passes through electric capacity C6 connection earth signals GND.
4. the pressure amplifying circuit in water flow switch pressure control plate according to claim 1, it is characterised in that the power supply
VCC is 5V.
5. the pressure amplifying circuit in water flow switch pressure control plate according to claim 1, it is characterised in that also including electricity
Hold C5, the other end of the resistance R17 passes through electric capacity C5 connection earth signals GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720159962.0U CN206470014U (en) | 2017-02-22 | 2017-02-22 | Pressure amplifying circuit in water flow switch pressure control plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720159962.0U CN206470014U (en) | 2017-02-22 | 2017-02-22 | Pressure amplifying circuit in water flow switch pressure control plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206470014U true CN206470014U (en) | 2017-09-05 |
Family
ID=59708155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720159962.0U Expired - Fee Related CN206470014U (en) | 2017-02-22 | 2017-02-22 | Pressure amplifying circuit in water flow switch pressure control plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206470014U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703837A (en) * | 2019-10-29 | 2020-01-17 | 北京东方计量测试研究所 | Earth current compensation circuit and method |
-
2017
- 2017-02-22 CN CN201720159962.0U patent/CN206470014U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703837A (en) * | 2019-10-29 | 2020-01-17 | 北京东方计量测试研究所 | Earth current compensation circuit and method |
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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: 20170905 Termination date: 20200222 |