CN210954386U - Multi-rain gauge access adapter - Google Patents
Multi-rain gauge access adapter Download PDFInfo
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- CN210954386U CN210954386U CN201922257501.9U CN201922257501U CN210954386U CN 210954386 U CN210954386 U CN 210954386U CN 201922257501 U CN201922257501 U CN 201922257501U CN 210954386 U CN210954386 U CN 210954386U
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Abstract
The utility model discloses a many rain gauges access adapter, include: the microprocessor unit is used for receiving and sending instructions, processing and recording signals; the rain gauge interrupt interface unit is used for connecting the tipping bucket type rain gauge; and the pulse output unit is used for triggering the pulse signal. The data acquisition unit is used for acquiring and recording data; a power management unit for supplying power to the above units; tipping bucket formula rain gauge is connected to rain gauge interrupt interface unit, and rain gauge interrupt interface unit inserts microprocessor unit input, and the pulse output unit is connected to microprocessor unit output, the data collection station is connected to the pulse output unit, the utility model discloses a multichannel rain gauge interrupt interface unit can accurate record rainfall count, the utility model discloses output signal passes through the filtering, guarantees the collection of effective signal, filters invalid signal, guarantees the accuracy of signal collection.
Description
Technical Field
The utility model relates to a many rain gauges insert adapter, the utility model belongs to meteorological monitoring field.
Background
The tipping bucket type rain gauge is a hydrological and meteorological instrument for measuring the rainfall in nature and converting the rainfall into digital information quantity expressed in the form of switching value to be output so as to meet the requirements of information transmission, processing, recording and display. In an actual field, the rainfall meter signals complete rainfall counting through a digital module on a data acquisition unit. And (3) finding in-situ operation: the digital port of access rain gauge signal is fragile, and output signal is pulse signal, and rainfall count number of hops when the signal line is elongated, and the work is occasionally unusual between data collection station and the digital module to appear, leads to the rainfall gauge to count and deviates, so rely on single rain gauge to carry out the rainfall sampling and bring very big risk for the accurate measurement of actual rainfall.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the digital port fragile, the count of inserting the rain gauge signal inaccurate, measure inaccurate scheduling problem and propose a many rain gauges and insert the adapter.
The utility model provides a many rain gauges access adapter, concrete technical scheme is as follows:
a pluviometer access adapter comprising: the rain gauge comprises a tipping bucket type rain gauge, a rain gauge interrupt interface unit, a microprocessor unit, a pulse output unit, a data acquisition unit and a power management unit;
the tipping bucket type rain gauge is connected to a rain gauge interruption interface unit, the rain gauge interruption interface unit is connected to the input end of a microprocessor unit, the output end of the microprocessor unit is connected with a pulse output unit, and the pulse output unit is connected with a data acquisition unit.
The rain gauge interrupts at least one path of the interface unit.
The rain gauge interrupt interface unit comprises an anti-interference multipath rain gauge access circuit, a filter circuit, a pulse width detection circuit and an interrupt pulse output circuit.
The anti-interference multipath rain gauge access circuit comprises a wiring terminal and a magnetic ring;
the filter circuit comprises a filter RC circuit;
the pulse width detection circuit comprises a level conversion gate circuit and a delay circuit; the delay circuit comprises a first one-shot trigger, a first resistor and a first capacitor;
the interrupt pulse output circuit comprises a second one-shot trigger, a second resistor and a second capacitor.
The output end of the connecting terminal is connected with the magnetic ring, the filter RC circuit comprises a filter resistor and a filter capacitor, the filter resistor is connected between the input end of the level conversion gate circuit and the magnetic ring, one end of the filter capacitor is connected with the filter resistor, and the other end of the filter capacitor is grounded; one end of the pull-up resistor is connected with the filter resistor and the magnetic ring, and the other end of the pull-up resistor is connected with the power supply;
the output end of the level conversion gate circuit is connected with a leading edge trigger pin of the first monostable trigger and a reset pin of the second monostable trigger; the first resistor and the first capacitor are respectively connected with an external resistor connecting pin and an external capacitor connecting pin of the first monostable trigger; the first resistor is connected with the first capacitor in series, and the other end of the first resistor is connected with a power supply; the reset pin and the back edge trigger pin of the first monostable trigger are connected with a power supply;
the second resistor and the second capacitor are respectively connected with an external resistor connecting pin and an external capacitor connecting pin of the second monostable trigger; the second resistor is connected with the second capacitor in series, and the other end of the second resistor is connected with a power supply; the rear edge trigger pin of the second monostable trigger is connected with a power supply; a pulse output pin of the first monostable trigger is connected with a leading edge trigger pin of the second monostable trigger; and the pulse output pin of the second one-shot flip-flop outputs an interrupt pulse signal.
The first one-shot flip-flop and the second one-shot flip-flop are CD 4098.
Compared with the prior art, the utility model discloses the beneficial effect who has as follows:
the utility model relates to a pluviometer access adapter, the pulse output unit is through anti-interference circuit, increases anti-interference protection, filter circuit at the adapter rainfall signal input end, effectively filters interference signal;
the adapter adopts the access of multiple rain gauges, so that the risk of inaccurate sampling of a single rain gauge is effectively avoided;
the multi-channel rain gauge interrupt interface unit is adopted to accurately record the rainfall count, the output signals are filtered to ensure the collection of effective signals, the ineffective signals are filtered, and the accuracy of the collected signals is ensured.
The utility model discloses a pulse width detection circuitry that filter circuit and monostable are constituteed guarantees, prescribes a limit to pulse width, screening signal.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the technical description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a pluviometer access adapter;
fig. 2 is a circuit diagram of an interrupt pulse output unit.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 2, a pluviometer access adapter includes: the system comprises a tipping bucket type rain gauge, a rain gauge interrupt interface unit, a microprocessor unit, an interrupt pulse output unit, a data acquisition unit and a power management unit;
the interrupt pulse output unit is used for triggering the microprocessor unit to interrupt signals;
the data acquisition unit is used for acquiring and recording data;
the power supply management unit supplies power to each unit;
the microprocessor unit is used for data storage and calculation;
the tipping bucket type rain gauge is connected to a rain gauge interruption interface unit, the rain gauge interruption interface unit is connected to the input end of a microprocessor unit, the output end of the microprocessor unit is connected with a pulse output unit, and the pulse output unit is connected with a data acquisition unit.
The rain gauge interrupts at least one path of the interface unit.
The rain gauge interrupt interface unit comprises an anti-interference multipath rain gauge access circuit, a filter circuit, a pulse width detection circuit and an interrupt pulse output circuit.
The anti-interference multi-channel rain gauge access circuit comprises a wiring terminal CN2 and a magnetic ring E1;
the filter circuit comprises a filter RC circuit;
the pulse width detection circuit comprises a level conversion gate circuit U8A and a delay circuit; the delay circuit comprises a first one-shot trigger U4A, a first resistor R19 and a first capacitor C8
The interrupt pulse output line includes a second one-shot U4B, a second resistor R18, and a second capacitor C7.
The output end of the connecting terminal CN2 is connected with a magnetic ring E1, the filter RC circuit comprises a filter resistor R20 and a filter capacitor C9, the filter resistor R20 is connected between the input end of the level conversion gate circuit U8A and the magnetic ring E1, one end of the filter capacitor C9 is connected with the filter resistor R20, and the other end of the filter capacitor C9 is grounded; one end of a pull-up resistor R21 is connected with the filter resistor R20 and the magnetic ring E1, and the other end of the pull-up resistor R21 is connected with a power supply;
the output end of the level conversion gate circuit U8A is connected with the leading edge trigger pin TRIG + of the first one-shot trigger U4A and the reset pin RST of the second one-shot trigger U4B; the first resistor R19 and the first capacitor C8 are respectively connected with an external resistor connecting pin REXT and an external capacitor connecting pin CEXT of the first one-shot trigger U4A; the first resistor R19 is connected with the first capacitor C8 in series, and the other end of the first resistor R19 is connected with a power supply; the reset pin RST and the back edge trigger pin TRIG-of the first monostable flip-flop U4A are connected with a power supply;
the second resistor R18 and the second capacitor C7 are respectively connected with an external resistor connecting pin REXT and an external capacitor connecting pin CEXT of the second one-shot trigger U4B; the second resistor R18 is connected with the second capacitor C7 in series, and the other end of the second resistor R18 is connected with a power supply; the back edge trigger pin TRIG-of the second monostable trigger U4B is connected with the power supply; a pulse output pin of the first monostable flip-flop U4A is connected with a leading edge trigger pin TRIG + of the second monostable flip-flop U4B; the pulse output pin of the second one-shot U4B outputs an interrupt pulse signal.
Through the above connection, the delay time of the delay circuit has a linear relationship with the product of the external resistance connection pin REXT, the external capacitance connection pin CEXT, the connected resistor and the capacitance parameter of the first one-shot U4A;
the first one-shot U4B and the second one-shot U4B use CD 4098.
The working principle is as follows:
as shown in fig. 1, the tipping-bucket rain gauge is respectively connected to three rain gauge interrupt interface units, and inputs signals to the microprocessor unit through pulse signals, and counts and displays on the data acquisition device.
In the attached drawing 2, E1 is used as a magnetic ring and is connected to a NOR gate CD4077 after passing through an RC circuit, pins 1 and 2 of a monostable trigger CD4098 are connected to a power supply VCC through a capacitor and a resistor, and pins 3 and 5 of the monostable trigger CD4098 are connected to the power supply VCC, so that a timing output signal is realized, and a signal with a pulse width smaller than a corresponding width is filtered.
The rain gauge tipping bucket generates a trigger pulse signal once per overturning, the pulse signal enters a pulse width detection circuit formed by monostables through a filter circuit, only the signal with the pulse width larger than the corresponding width can pass through the pulse width detection circuit, as shown in figure 2, a singlechip interrupt pulse is generated after the pulse width detection circuit passes through the pulse width detection circuit, after the signal is recovered in the interruption of a microprocessor unit, a delay reset pulse is sealed, and the accumulated rainfall count is automatically added by 1. It is worth to be noted that the microprocessor unit in this embodiment is not improved, and the technical solution in this embodiment is implemented only by improving components in the circuit.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. A pluviometer access adapter, comprising:
the rain gauge comprises a tipping bucket type rain gauge, a rain gauge interrupt interface unit, a microprocessor unit, a pulse output unit, a data acquisition unit and a power management unit;
the tipping bucket type rain gauge is connected to a rain gauge interruption interface unit, the rain gauge interruption interface unit is connected to the input end of a microprocessor unit, the output end of the microprocessor unit is connected with a pulse output unit, and the pulse output unit is connected with a data acquisition unit.
2. A pluviometer access adapter according to claim 1, wherein:
the rain gauge interrupts at least one path of the interface unit.
3. A pluviometer access adapter according to claim 1, wherein:
the rain gauge interrupt interface unit comprises an anti-interference multipath rain gauge access circuit, a filter circuit, a pulse width detection circuit and an interrupt pulse output circuit.
4. A pluviometer access adapter according to claim 3, wherein:
the anti-interference multi-channel rain gauge access circuit comprises a connecting terminal (CN 2) and a magnetic ring (E1);
the filter circuit comprises a filter RC circuit;
the pulse width detection circuit comprises a level conversion gate circuit (U8A) and a delay circuit; the delay circuit comprises a first one-shot trigger (U4A), a first resistor (R19) and a first capacitor (C8);
the interrupt pulse output line includes a second one-shot flip-flop (U4B), a second resistor (R18), and a second capacitor (C7).
5. A pluviometer access adapter according to claim 4, wherein:
the output end of the connecting terminal (CN 2) is connected with the magnetic ring (E1), the filter RC circuit comprises a filter resistor (R20) and a filter capacitor (C9), the filter resistor (R20) is connected between the input end of the level conversion gate circuit (U8A) and the magnetic ring (E1), one end of the filter capacitor (C9) is connected with the filter resistor (R20), and the other end of the filter capacitor (C9) is grounded; one end of the pull-up resistor (R21) is connected with the filter resistor (R20) and the magnetic ring (E1), and the other end is connected with a power supply;
the output end of the level conversion gate circuit (U8A) is connected with a leading edge trigger pin (TRIG +) of the first one-shot flip-flop (U4A) and a reset pin (RST) of the second one-shot flip-flop (U4B); the first resistor (R19) and the first capacitor (C8) are respectively connected with an external resistor connecting pin (REXT) and an external capacitor connecting pin (CEXT) of the first one-shot trigger (U4A); the first resistor (R19) and the first capacitor (C8) are connected in series, and the other end of the first resistor (R19) is connected with a power supply; the reset pin (RST) and the back edge trigger pin (TRIG-) of the first monostable flip-flop (U4A) are connected with a power supply;
the second resistor (R18) and the second capacitor (C7) are respectively connected with an external resistor connecting pin (REXT) and an external capacitor connecting pin (CEXT) of the second one-shot flip-flop (U4B); the second resistor (R18) and the second capacitor (C7) are connected in series, and the other end of the second resistor (R18) is connected with a power supply; the back edge trigger pin (TRIG-) of the second monostable trigger (U4B) is connected with a power supply; the pulse output pin of the first monostable flip-flop (U4A) is connected with the leading edge trigger pin (TRIG +) of the second monostable flip-flop (U4B); the pulse output pin of the second one-shot flip-flop (U4B) outputs an interrupt pulse signal.
6. A pluviometer access adapter according to claim 5, wherein:
the first one-shot (U4A) and the second one-shot (U4B) use CD 4098.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922257501.9U CN210954386U (en) | 2019-12-16 | 2019-12-16 | Multi-rain gauge access adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922257501.9U CN210954386U (en) | 2019-12-16 | 2019-12-16 | Multi-rain gauge access adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210954386U true CN210954386U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922257501.9U Active CN210954386U (en) | 2019-12-16 | 2019-12-16 | Multi-rain gauge access adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210954386U (en) |
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2019
- 2019-12-16 CN CN201922257501.9U patent/CN210954386U/en active Active
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