CN208969514U - A kind of detection circuit of essential oil metering device - Google Patents
A kind of detection circuit of essential oil metering device Download PDFInfo
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- CN208969514U CN208969514U CN201822124966.2U CN201822124966U CN208969514U CN 208969514 U CN208969514 U CN 208969514U CN 201822124966 U CN201822124966 U CN 201822124966U CN 208969514 U CN208969514 U CN 208969514U
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- 239000000341 volatile oil Substances 0.000 title claims abstract description 91
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 101100434411 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ADH1 gene Proteins 0.000 claims description 8
- 101150102866 adc1 gene Proteins 0.000 claims description 8
- 101150042711 adc2 gene Proteins 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 description 25
- 239000003921 oil Substances 0.000 description 12
- 230000032683 aging Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 241000222519 Agaricus bisporus Species 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 238000004904 shortening Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of detection circuit of essential oil metering device, including MCU, the MCU is connected by serial data pin and the connector of low-level device, and the LED pin of the MCU is connect with two concatenated light-emitting tubes；The MCU has multiple ADC pins, any one ADC pin is connect with a light receiving tube by an operational amplifier and carries out signal acquisition to the light receiving tube.The automation control to the metering of essential oil dosage can be realized to the control of the connector of low-level device to the restricting the number analysis of pipe and by MCU to light-emitting tube, light-receiving by MCU in the utility model, and entire circuit design is at low cost, small in size, detection accuracy is high.
Description
Technical field
The utility model relates to electronic circuit fields, and in particular to a kind of detection circuit of essential oil metering device.
Background technique
In essential oil champignon, especially compound champignon, traditional filling essential oil mode is: Ethereal oil bottle is equipped with aperture beyond the Great Wall,
When filling essential oil, manually Ethereal oil bottle is toppled over, oozes essential oil at drop-wise from aperture, manually essential oil is dripped and is counted, the phase is reached
Ethereal oil bottle is manually restored upright after hoping drop number, stops essential oil and oozes, thus complete the quantitative control to essential oil dosage.
This traditional quantitative control mode combined completely by manual hand manipulation and range estimation, not can be adapted to not only current
The increasingly update of intelligentized product performance demands and product, while cannot accomplish very accurately in the control of precision,
And it needs to spend a large amount of manpower and material resources.
With the development of society and the progress of science and technology, people need essential oil quantitative to manufacture automatic control, automatic gauge,
Manufacturing cost is low, intelligent product development.And under inexpensive required pressure, the accurate dosage for controlling essential oil and proportion are one
A problem causes current civilian low and middle-grade fumigating machines, in, without a kind of low cost, high-precision metering device.
Based on this, need that existing essential oil metered scheme and device is further improved, make its accomplish it is at low cost,
Feature small in size, accuracy is high, and the pith of entire metering device is the detection circuit of essential oil metering device, therefore,
Most importantly the detection circuit of existing essential oil metering device is improved.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of essential oil at low cost, small in size, accuracy is high
The detection circuit of metering device.
To achieve the above object, the technical solution that the utility model is taken is as follows:
A kind of detection circuit of essential oil metering device, including MCU, the MCU pass through serial data pin and low-level device
Connector connection, the LED pin of the MCU connect with two concatenated light-emitting tubes；The MCU has multiple ADC pins,
Any one ADC pin is connect with a light receiving tube by an operational amplifier and carries out signal to the light receiving tube and adopted
Collection.
It preferably, further include power circuit, the power circuit is connect with MCU and connector respectively, directly to the MCU
And connector and between be connected in the electronics connecting with MCU.
Preferably, the power circuit includes the voltage-stablizer U2 and capacitor C2 being connected in series, the voltage-stablizer U2's and MCU
VCC pin connection, the other end of the C2 and the V+ pin of connector connect.
Preferably, the serial data pin of the MCU includes 1 serial data output pin DO1 and a serial number
According to output pin DI1, DO1 the and DI1 pin of the MCU is correspondingly connected with the DO1DI1 pin of connector respectively.
Preferably, the serial data pin of the MCU includes dual serial data output pins DO1, DO2 and a string
DO1, DO2 and DI1 pin of row data output pins DI1, the MCU are corresponding with DO1, DO2 and DI1 pin of connector respectively
Connection.
Preferably, there are two the ADC pins, two pins are respectively ADC1 and ADC2, and the ADC1 pin passes through fortune
It calculates amplifier U3 to connect with light receiving tube LD1, the ADC2 pin is connect by operational amplifier U4 with light receiving tube LD2.
Preferably, a current-limiting resistance R1 is connected between the LED pin and two concatenated light-emitting tubes.
Preferably, the chip model of the MCU is HT48R005.
The beneficial technical effect of the utility model: the utility model is by MCU to light-emitting tube, light-receiving to the restricting the number of pipe
It analyzes and the automation control measured to essential oil dosage can be realized to the control of the connector of low-level device by MCU, it is whole
A circuit design is at low cost, small in size, detection accuracy is high.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of essential oil metering device of the utility model.
Fig. 2 is a kind of circuit diagram of the detection circuit of essential oil metering device of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to embodiments to this
Utility model is further elaborated, but the range of the requires of the utility model protection is not limited to following specific implementations
Example.
Fig. 1 is a kind of essential oil metering device structural schematic diagram, and whole device includes at least two pairs of light-emitting tubes 1, light-receivings
Pipe 2, petroleum pipeline 3 and detection circuit board 4,
Wherein, light-emitting tube 1 and light receiving tube 2 are distributed in 3 two sides of petroleum pipeline, and the light that light-emitting tube 1 issues is through oil transportation
Essential oil or air → petroleum pipeline other side wall in tube wall → pipe, eventually impinges light receiving tube 2.Light intensity is issued in light-emitting tube
Under the premise of constant, when not having essential oil in petroleum pipeline 3, the light intensity for reaching reception pipe 2 is also constant；Have when in petroleum pipeline 3
When essential oil flows through, essential oil blocks and has scattered a part of light, causes the light intensity decline for reaching reception pipe 2.
At least two pairs of light-emitting tubes 1, light receiving tube 2 are welded in detection circuit board 4, and petroleum pipeline 3 (does not give through constraint mechanism
Draw) it is located between light-emitting tube 1, light receiving tube 2, guarantee to the light penetrated by the essential oil access in petroleum pipeline 3.Detection
Circuit board 4 is that light-emitting tube 1 provides stable electric current, is allowed to emit the light of constant luminance；Meanwhile light receiving tube 2 receives
After the light of light-emitting tube 1, electrical characteristics change with the light intensity received, detection circuit board 4 are input to, through detecting
Circuit on circuit board 4 does the electrical property change situation of light receiving tube 2 amplify, filter after, formed with 3 essential oil of petroleum pipeline in negative
After the reference electrical signal comparison of circuit presets setting on relevant electric signal, with detection circuit board 4, output switching value letter
Number.
As described above, each pair of light emitting-light receiving tube exports a way switch after the circuit parsing in detection circuit board 4
Signal is measured, is used for the device of junior's control essential oil dosage.
The device of low-level device adapted the application when controlling and measure essential oil dosage, can be realized by following steps
Accurate metering and control to essential oil:
1. step 1: the pump back suction of control conveying essential oil makes the one of short duration time of essential oil pumpback in petroleum pipeline 3
Essential oil in petroleum pipeline 3 is counter to send Ethereal oil bottle back to, and each road output signal of the application device is restored the signal condition of " essential oil is empty ", made
For the adaptation function of the application device, the application device is automatically by the electrical characteristics conduct of light receiving tube 2 under " essential oil is empty " state
With reference to adjusting reference electrical signal level as a comparison, it is therefore an objective to prevent from interfering because of ambient, petroleum pipeline aging, petroleum pipeline
The factors such as interior residual essential oil oil film, 1 aging of light-emitting tube, 2 aging of light receiving tube, essential oil kind difference cause testing result to float
It moves, adjusts reference electrical signal dynamically in real time, accuracy in detection, the adaptability of the application device can be improved.
2. step 2: control conveying essential oil pump forward direction convey essential oil, when essential oil approach first to light emitting-reception to pipe
When, the on-off model that will test first via output jumps, and remembers jumping moment point t1.
3. step 3: continuing the pump forward direction conveying essential oil of control conveying essential oil, when essential oil approach second is to light emitting-reception
When to pipe, it will test to the on-off model that the second tunnel exports and jump, remember jumping moment point t2.
4. obtaining time difference of the essential oil approach two to light emitting-reception to pipe step 3: calculating t2-t1, showing that essential oil exists
Flowing velocity in petroleum pipeline 3 can be obtained by it multiplied by the intracavity section product of petroleum pipeline 3 and flow through petroleum pipeline 3 in the unit time
Essential oil volume, become capacity speed.According to the target essential oil volume that this needs to convey, with it divided by this capacity speed, i.e.,
The time t that oil transfer pump needs to continue positive conveying can be obtained.
5. stopping after duration t step 4: continuing the pump forward direction conveying essential oil of control conveying essential oil.So far, this is fixed
Amount oil transportation finishes.
6. step 5: control conveys the pump back suction of essential oil, by the one of short duration time of essential oil pumpback in petroleum pipeline 3, directly
Restore the signal condition of " essential oil is empty " to the output of double switch amount.The purpose of this step be by resorption, will be in petroleum pipeline 3
Essential oil is counter to send Ethereal oil bottle back to, prevents the essential oil in petroleum pipeline 3 from distributing from line end along air, influences champignon precision；Second make
Essential oil is detached from petroleum pipeline 3 as far as possible, prevents petroleum pipeline 3 from contacting for a long time with essential oil and causes burn into aging.
In principle, two pairs of light emitting-receptions pipe be can be completed the metering and control function to essential oil dosage.It is several right to add
Light emitting-reception, can be for low-level device by making up the fluctuation on oil transportation revolution speed, defeated to pipe and its output on-off model
Error caused by oil pump is worn etc. more accurately analyzes the essential oil conveying speed in petroleum pipeline 3, provides and detect and control precision.
The detection circuit for being detected and controlled to essential oil is provided in above-mentioned detection circuit board 4.
Specifically, as shown in Fig. 2, a kind of detection circuit of essential oil metering device, including MCU, the MCU pass through serial number
It is connected according to pin and the connector of low-level device, MCU carries out signal by serial data pin and the connector of low-level device
It receives and sends；The LED pin of the MCU is connect with two concatenated light-emitting tube L1, L2；There are the MCU multiple ADC to draw
Foot, any one ADC pin are connect with a light receiving tube by an operational amplifier and carry out letter to the light receiving tube
Number acquisition.Have above-mentioned it is found that light-emitting tube 1 and light receiving tube 2 are distributed in 3 two sides of petroleum pipeline, it is permanent to issue light intensity in light-emitting tube
Under the premise of fixed, when not having essential oil in petroleum pipeline 3, the light intensity for reaching reception pipe 2 is also constant；When having essence in petroleum pipeline 3
Oil stream is out-of-date, and essential oil blocks and scattered a part of light, causes the light intensity decline for reaching reception pipe 2.This is that MCU passes through
The basis of this Circuit theory.
In addition this detection circuit further includes power circuit, and the power circuit is connect with MCU and connector respectively, directly to
The MCU and connector and between be connected in the electronics connecting with MCU.The power circuit includes the pressure stabilizing being connected in series
The VCC pin of device U2 and capacitor C2, the voltage-stablizer U2 and MCU connect, and the other end of the C2 and the V+ pin of connector connect
It connects.
Specifically, in the present embodiment, the serial data pin of the MCU include dual serial data output pins DO1,
DO1, DO2 and DI1 pin of DO2 and serial data output pin DI1, the MCU respectively with DO1, DO2 of connector
It is correspondingly connected with DI1 pin.Two signal line of DO1, DO2 can of course be merged uses a DO, voltage-stablizer U2 to detect the
When a pair of of light emitting-reception has essential oil to pass through in area under control domain, first short pulse is exported on DO signal wire, and is detecting the
When two pairs of light emitting-receptions have essential oil to pass through in area under control domain, second short pulse is exported on DO signal wire.Low-level device is to DO
The time of first latter two pulse on signal wire examines each carry out timing, equally can achieve the purpose of metering.Save a bars
Line may allow U2 to be conducive to further reduce the cost using the singlechip chip of smaller level-one.
The ADC pin has there are two settings, and two pins are respectively ADC1 and ADC2, and the ADC1 pin passes through operation
Amplifier U3 is connect with light receiving tube LD1, and the ADC2 pin is connect by operational amplifier U4 with light receiving tube LD2.It is described
The current limliting electricity of resistance a R1, R1 L1, L2 twos' light-emitting tube is connected between LED pin and two concatenated light-emitting tubes
Resistance, under conditions of power good, by the resistance current limliting, the electric current substantially constant flowed through on L1, L2, luminous intensity also base
This is constant.
When utility model works, low-level device drives one of oil transfer pump back suction of short duration time first, and (this time is design
It is adjusted determining fixed value in the process, setting principle is to guarantee that this time is slightly longer than the essential oil whole in petroleum pipeline 3
Pumpback is to the time needed for Ethereal oil bottle), a skip signal is then conveyed to the present apparatus by DI1 signal wire.
After the application device receives the skip signal on DI1 signal wire, U2 is to set LEDO line for high level, driving L1,
Two light-emitting tubes of L2 shine, while detecting the level magnitudes of two input terminal of ADC1, ADC2, as the comparison of " essential oil is empty "
Benchmark.This section determines that the time of benchmark is provided by low-level device.Later, low-level device driving oil transfer pump starts positive defeated
It send, the voltage-stablizer U2 of the application device constantly detects the level magnitudes of two input terminal of ADC1, ADC2, and discovery is more than about tentering degree
After variation, that is, think the corresponding light emitting-reception of essential oil approach to area under control domain, it is defeated in corresponding output port DO1 or DO2 immediately
Skip signal out, notice low-level device carry out timing.
After this essential oil conveys, low-level device restores the signal on DI1 signal wire, and the application device resets LEDO
Line is low level, extinguishes two light-emitting tubes of L1, L2, and to delay its aging, the characteristic remained relatively unchanged over is conducive to improve inspection
Precision is surveyed, the service life of the application device is extended.
After if low-level device sends skip signal from DI1 signal wire, through being several times as much as work normally the period when
Between after expected level jump is not detected on DO1 or DO2 yet, that is, think the essential oil sky in Ethereal oil bottle, can basis
It needs to issue standby signal.
As further intelligentized scheme, DO1, DO2 signal wire are respectively used to driving oil transfer pump back suction and forward direction is defeated
It send, is being implemented to carry out timing to area under control domain essential oil elapsed time difference to two pairs of light emitting-receptions by the U2 in the application device,
And calculate volume flow.The jump on DI1 signal wire is received every time, i.e., control DO1, DO2 signal is passed through by the application device
The jump of line, completes the control to oil transfer pump, and the essential oil that a pairs of unit volume (such as a drop or 1mL etc.) has been calculated in U2 is defeated
After sending, that is, stop positive conveying, and carry out the resorption of short time, to prepare oil transportation next time.I.e. by above-described embodiment under
The calculating correction values and control work that stage arrangement is completed, focus on the completion of the application device, low-level device is every time on DI1 signal wire
A pulse is sent, the application device is the essential oil conveying for completing a unit.Low-level device need to only be sent out from DI1 signal wire
After sending pulse, the signal condition of DO1, DO2 are detected, detects that positive conveying finishes state, i.e., it is believed that this essential oil has conveyed
Finish, is delayed after the time corresponding with the back suction time, pulse can be sent on DI1 signal wire again, to request next unit
Essential oil convey (if necessary).
The utility model hardware circuit and cost substantially without it is increased under the conditions of, the work of low-level device can be mitigated significantly
It measures, is conducive to the development cycle for shortening low-level device, or the MCU for allowing low-level device to use low level-one, to reduce cost.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to specific embodiment disclosed and described above, right
Some modifications and changes of utility model should also be as falling into the protection scope of the claims of the present utility model.In addition, although
It is used some specific terms in this specification, these terms are merely for convenience of description, does not constitute to utility model
Any restrictions.
Claims (8)
1. a kind of detection circuit of essential oil metering device, which is characterized in that including MCU, the MCU by serial data pin with
The connector of low-level device connects, and the LED pin of the MCU is connect with two concatenated light-emitting tubes；The MCU has multiple
ADC pin, any one ADC pin by an operational amplifier connect with a light receiving tube and to the light receiving tube into
Row signal acquisition.
2. a kind of detection circuit of essential oil metering device as described in claim 1, which is characterized in that it further include power circuit,
The power circuit is connect with MCU and connector respectively, directly to the MCU and connector and between be connected in the electricity connecting with MCU
Sub- device power supply.
3. a kind of detection circuit of essential oil metering device as claimed in claim 2, which is characterized in that the power circuit includes
The VCC pin of the voltage-stablizer U2 and capacitor C2 of series connection, the voltage-stablizer U2 and MCU connect, the other end of the C2 and company
Connect the V+ pin connection of device.
4. a kind of detection circuit of essential oil metering device as described in claim 1, which is characterized in that the serial number of the MCU
It include the DO1 and DI1 of 1 serial data output pin DO1 and serial data output pin a DI1, the MCU according to pin
Pin is correspondingly connected with the DO1 DI1 pin of connector respectively.
5. a kind of detection circuit of essential oil metering device as described in claim 1, which is characterized in that the serial number of the MCU
It include a dual serial data output pins DO1, DO2 and serial data output pin DI1 according to pin, the MCU's
DO1, DO2 and DI1 pin are correspondingly connected with DO1, DO2 and DI1 pin of connector respectively.
6. a kind of detection circuit of essential oil metering device as described in claim 1, which is characterized in that the ADC pin has two
A, two pins are respectively ADC1 and ADC2, and the ADC1 pin is connect by operational amplifier U3 with light receiving tube LD1, institute
ADC2 pin is stated to connect by operational amplifier U4 with light receiving tube LD2.
7. a kind of detection circuit of essential oil metering device as described in claim 1, which is characterized in that the LED pin and two
A current-limiting resistance R1 is connected between a concatenated light-emitting tube.
8. a kind of detection circuit of essential oil metering device as described in claim 1, which is characterized in that the MCU's is chip-shaped
Number be HT48R005.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822124966.2U CN208969514U (en) | 2018-12-18 | 2018-12-18 | A kind of detection circuit of essential oil metering device |
| JP2019000577U JP3221189U (en) | 2018-12-18 | 2019-02-20 | Detection circuit of essential oil measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822124966.2U CN208969514U (en) | 2018-12-18 | 2018-12-18 | A kind of detection circuit of essential oil metering device |
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| Publication Number | Publication Date |
|---|---|
| CN208969514U true CN208969514U (en) | 2019-06-11 |
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ID=66429759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822124966.2U Active CN208969514U (en) | 2018-12-18 | 2018-12-18 | A kind of detection circuit of essential oil metering device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3221189U (en) |
| CN (1) | CN208969514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061701A (en) * | 2021-12-07 | 2022-02-18 | 深圳市帝拓电子有限公司 | Optical induction liquid level detection method and liquid level detection device |
-
2018
- 2018-12-18 CN CN201822124966.2U patent/CN208969514U/en active Active
-
2019
- 2019-02-20 JP JP2019000577U patent/JP3221189U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061701A (en) * | 2021-12-07 | 2022-02-18 | 深圳市帝拓电子有限公司 | Optical induction liquid level detection method and liquid level detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3221189U (en) | 2019-05-09 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200330 Address after: California, USA Patentee after: Bio creative company Address before: 518125 First, Second and Third Floors of No. 372 Huangpu East Ring Road, Huangpu Community, Xinqiao Street, Baoan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN DITUO ELECTRONIC Co.,Ltd. |
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| TR01 | Transfer of patent right |