CN208188048U - A kind of fire hydrant detection device based on ultrasound - Google Patents
A kind of fire hydrant detection device based on ultrasound Download PDFInfo
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- CN208188048U CN208188048U CN201820541133.3U CN201820541133U CN208188048U CN 208188048 U CN208188048 U CN 208188048U CN 201820541133 U CN201820541133 U CN 201820541133U CN 208188048 U CN208188048 U CN 208188048U
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- ultrasonic
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- fire hydrant
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Abstract
The utility model relates to a kind of fire hydrant detection devices based on ultrasound, including ultrasonic excitation and receiving module, signal processing module and main control module, the echo-signal received is sent to signal processing module by main control module control ultrasonic excitation and receiving module transmitting ultrasonic wave, ultrasonic excitation and receiving module；Main control module includes central controller, key switch and display screen, and key switch output end connects the input terminal of central controller, the input terminal of the output end connection display screen of central controller.Ultrasonic excitation and receiving module include ultrasonic signal energizing circuit and ultrasonic transducer, and central controller output end connects the input terminal of ultrasonic signal energizing circuit, the input terminal of the output end connection ultrasonic transducer of ultrasonic signal energizing circuit；The input terminal of the output end connection signal processing module of ultrasonic transducer.The device is based on water level conditions in ultrasound examination fire hydrant, flexibly uses, is easy to carry.
Description
Technical field
The utility model relates to a kind of fire hydrant detection device more particularly to a kind of fire hydrant detection dresses based on ultrasound
It sets.
Background technique
Fire hydrant is fire control important equipment, and can it, which play a role, is directly related to the life and property peace of people
Entirely.But current China's fire hydrant destroys that situation is serious and most of fire hydrants can not accomplish situation real-time monitoring.Have one at present
A little fire hydrant detection methods, including hydraulic pressure detection and manual operation detection.The former need to be mounted on inside fire hydrant water pipe and
Maintenance cost is higher；The latter needs to fully open fire hydrant valve then to check water level conditions in water pipe.Therefore, it studies a kind of fast
The fire hydrant detection device of speed just seems extremely urgent.
Utility model content
The utility model is inconvenient for use in order to solve the problems, such as existing detection device, provides a kind of without opening fire hydrant
The device of detection can be completed in valve, which is based on water level conditions in ultrasound examination fire hydrant, flexibly uses, convenient for taking
Band.
Technical solution adopted in the utility model are as follows: a kind of fire hydrant detection device based on ultrasound, including ultrasound
Wave excitation and receiving module, signal processing module and main control module, the main control module control the ultrasonic excitation and reception
The echo-signal received is sent to signal processing module by module transmitting ultrasonic wave, the ultrasonic excitation and receiving module；
The main control module includes central controller, key switch and display screen, the key switch output end connection center control
The input terminal of device processed, the output end of the central controller connect the input terminal of the display screen.
The ultrasonic excitation and receiving module include ultrasonic signal energizing circuit and ultrasonic transducer, the center control
Device output end processed connects the input terminal of the ultrasonic signal energizing circuit, and the output end of the ultrasonic signal energizing circuit connects institute
State the input terminal of ultrasonic transducer；
The output end of the ultrasonic transducer connects the input terminal of the signal processing module.
Further, the signal processing module includes chip, low-pass filter circuit and voltage comparator circuit, the ultrasound
The signal of wave transducer successively passes through low-pass filter circuit, voltage comparator circuit is input to central controller, the ultrasonic waves
The signal of energy device also passes through chip and is input to the central controller.
Further, the ultrasonic signal energizing circuit includes charge power supply, MOSET pipe, storage capacitor, charging resistor
And transformer, described charging resistor one end connect charge power supply, the other end is grounded by storage capacitor, the transformer with
The storage capacitor both ends are connected in parallel on after the series connection of MOSET pipe.
Further, the low-pass filter circuit includes resistance and capacitor, and resistance is connected in series to the capacitor, and input signal connects two
On the outside of person, output signal is connect in capacitor two sides, and the low-pass filter circuit can filter out frequency in incoming electric signal and be higher than cutoff frequency
The ingredient of rate.
Further, which further includes shell, and the ultrasonic transducer is placed in the end of the shell, the shell
It is equipped with handle, the switch key is arranged on the handle.
Further, the chip model is TMS320F28335.
Beneficial effect caused by the utility model includes: that (1) compares other similar detection devices: such as pressure gauge or hydraulic pressure
The detection devices such as sensor, the detection device that the utility model is proposed can be detected directly outside fire hydrant, without putting
It is placed in inside fire hydrant water pipe, reduces operation difficulty and cost of labor.(2) the detection device difference that the utility model is proposed
In common monitoring device, that is, do not need that the device is installed on each fire hydrant.Staff only needs detecting
The detection device is used when some specific fire hydrant.
Detailed description of the invention
A kind of fire hydrant detection device block diagram based on ultrasound of Fig. 1；
Fig. 2 ultrasonic signal energizing circuit；
Fig. 3 low-pass filter circuit；
Fig. 4 ultrasonic transducer and pipe outer wall sectional view；
Fig. 5 device appearance schematic diagram；
1, ultrasonic excitation and receiving module, 10, ultrasonic signal energizing circuit, 11, ultrasonic transducer, 2, signal reception
Module, 20, dsp chip circuit, 21, low-pass filter circuit, 22, voltage comparator circuit, 3, main control module, 30, central controller,
31, key switch, 32, liquid crystal display, 33, power supply, 100, charge power supply, 101, storage capacitor, 102, charging resistor, 103,
Pulse transformer, 104, MOSET pipe, 210, resistance, 211, capacitor, 4, pipe outer wall, 5, the ultrasonic signal excited, 6, ultrasound letter
Number echo.
Specific embodiment
Further details of explanation is done to the utility model with reference to the accompanying drawings and detailed description, but it should reason
Solution is not limited by the specific implementation for the protection scope of the utility model.
Fig. 1 is the frame diagram of fire hydrant detection device based on ultrasound in the utility model, is mainly swashed including ultrasonic wave
Hair and receiving module 1, signal processing module 2, main control module 3.Main control module 3 is separately connected ultrasonic excitation and receiving module 1
With signal processing module 2,1 connection signal processing module 2 of ultrasonic excitation and receiving module.
The ultrasonic wave transmitting excitation and receiving module 1 include ultrasonic signal energizing circuit 10, ultrasonic transducer 11.Institute
Ultrasonic signal energizing circuit 10 is stated to be connected with ultrasonic transducer 11.Ultrasonic signal energizing circuit mainly include charge power supply 100,
Storage capacitor 101, charging resistor 102, pulse transformer 103, MOSET pipe 104, circuit diagram are shown in Fig. 2,102 one end of charging resistor
Charge power supply 100 is connected, the other end is grounded by storage capacitor 101, the primary coil and MOSET pipe 104 of pulse transformer 103
The storage capacitor both ends are connected in parallel on after series connection, the secondary coil of pulse transformer 103 connects ultrasonic transducer 11.Ultrasonic wave
Electric energy caused by aforementioned ultrasonic energizing circuit 10 can be converted into sound energy, i.e. the ultrasound letter of generation fixed frequency by energy converter 11
Number, ultrasonic transducer model HNC-4AS-35235.The energy converter also has the function of receiving ultrasonic signal simultaneously, is used for
Receive echo of emitted ultrasonic signal after hitting tube wall.
The signal processing module 2 includes chip, that is, dsp chip circuit 20, low-pass filter circuit 21, voltage comparator circuit
22.The ultrasonic transducer 11 is separately connected with dsp chip circuit 20 and low-pass filter circuit 21, the low-pass filter circuit
21 are connected with voltage comparator circuit 22, on the one hand the signal of the ultrasonic transducer successively passes through low-pass filter circuit, voltage
Comparison circuit is input to central controller, is on the other hand also input to the central controller by chip.Dsp chip circuit is adopted
With the DSP core core of model TMS320F28335, it is responsible for carrying out spectrum analysis to the incoming electric signal in outside.It is aforementioned such as Fig. 3
Low-pass filter circuit 21 is made of resistance 210 and capacitor 211, and the two is connected.Input signal is linked into the two both ends, i.e., electric
The both ends of resistance 210 and capacitor 211 are connected with ultrasonic transducer；Output signal is derived from capacitor both ends, i.e. capacitor both ends and voltage
Comparison circuit is connected.The low-pass filter circuit can filter out the high frequency ac signal in incoming electric signal.Aforesaid voltage is more electric
Road uses the amplifier voltage comparator of model LM393, is connected with low-pass filter circuit 21.If input signal is greater than threshold value,
Output signal is high level；Conversely, output signal is low level.
Main control module 3 is respectively connected with ultrasonic excitation and receiving module 1 and signal processing module 2, the main control module 3
Including central controller 30, key switch 31, liquid crystal display 32, power supply 33.The central controller 30 is opened with key respectively
Close 31, liquid crystal display 32, power supply 33 is connected.The key switch 31 is responsible for triggering central controller 30 and is excited to ultrasonic signal
Circuit 10 issues instruction.The liquid crystal display 32 can receive the information from central controller 30 and display.The power supply 33
It can be the small-sized electrochemical cell such as button cell, electric energy can be provided to central controller 30.Central controller by singlechip chip, can
Connect pin, crystal oscillator, the light emitting diode composition of peripheral hardware.
Fig. 4 is ultrasonic transducer and pipe outer wall sectional view, mainly includes ultrasonic transducer 11, water pipe to be detected
5, the ultrasonic signal 6 of transmitting, the echo 7 of ultrasonic signal.
Such as Fig. 5, device includes L-type shell, i.e., shell is similar to pistol.Aforementioned ultrasonic excitation and receiving module are located at rifle
Head point, power supply is located at pikestaff part, and key switch is exposed to outside, remaining each section circuit is placed in shell.
Ultrasonic excitation and receiving module above-mentioned, implementation step are as follows:
1) main control module is connected with MOSET pipe 104, and the control signal of generation is the fixed square-wave signal of a duty ratio, can
Directly drive MOSET pipe 104；
2) when MOSET pipe 104 disconnects, charge power supply 100 is charged by charging resistor 102 to storage capacitor 101；
3) when MOSET pipe 104 is connected, the energy stored in storage capacitor passes through the primary coil of pulse transformer 103
Abrupt release, while one amplitude of generation is up to the sharp pulse of several hectovolts on transformer secondary coil；
4) sharp pulse signal motivates ultrasonic transducer 5, issues ultrasonic signal 6.
Signal processing module above-mentioned, implementation step are as follows:
1) ultrasonic transducer 11 receives the echo 6 of ultrasonic signal, then by echo 6 be transferred to dsp chip circuit 20 and
Low-pass filter circuit 21；
2) low-pass filter circuit 20 carries out spectrum analysis calculating to the echo 6；Low-pass filter circuit 21 is first by echo 6 simultaneously
In HF noise signal filter off, then echo 6 is transferred to voltage comparator circuit 22；
3) amplitude of echo 6 is compared by voltage comparator circuit 22 with given threshold, obtain accordingly result, is sent to
Entreat controller 30.
Main control module above-mentioned, implementation step are as follows:
1) state of 30 real-time monitoring key switch 31 of central controller, once key switch 31 is pressed, then to ultrasound
Signal excitation circuit 10 sends instruction, drives its excitation ultrasound signal；
2) judging result that signal processing module 2 is passed back is received, then result is shown by liquid crystal display 32.
3) power supply 33 is responsible for providing electric energy to central controller.
The working principle of the utility model is:
The excitation of ultrasonic signal uses pulse excitation method, generates an amplitude by ultrasonic excitation circuit and reaches several hundred
The sharp pulse of volt can generate a cycle ultrasonic signal identical with the pulse.
Energy attenuation degree when ultrasonic signal is propagated in air is much larger than attenuation degree when propagating in water, therefore
The medium that the distinguishable echo received is passed through is water or air.
Even if energy can be decayed when ultrasonic signal is propagated in the medium, but the characteristic variations such as frequency spectrum are smaller, therefore can
Determined by spectrum analysis method the ultrasonic signal received whether be issue the reflected generation of ultrasonic signal echo-signal.If
It is then to judge to its amplitude, result can be obtained.
The utility model can also take other embodiments in addition to the implementation, and all uses are equivalent, and I replaces me or wait
The technical solution that effect transformation is formed, all falls within scope of protection of the utility model.
Claims (6)
1. a kind of fire hydrant detection device based on ultrasound, it is characterised in that: including ultrasonic excitation and receiving module, signal
Processing module and main control module, the main control module controls the ultrasonic excitation and receiving module emits ultrasonic wave, described super
The echo-signal received is sent to signal processing module by sound wave excitation and receiving module；The main control module includes center control
Device, key switch and display screen processed, the key switch output end connect the input terminal of the central controller, the center control
The output end of device processed connects the input terminal of the display screen；
The ultrasonic excitation and receiving module include ultrasonic signal energizing circuit and ultrasonic transducer, the central controller
Output end connects the input terminal of the ultrasonic signal energizing circuit, and the output end connection of the ultrasonic signal energizing circuit is described super
The input terminal of acoustic wave transducer；
The output end of the ultrasonic transducer connects the input terminal of the signal processing module.
2. fire hydrant detection device based on ultrasound according to claim 1, it is characterised in that: the signal processing mould
Block includes chip, low-pass filter circuit and voltage comparator circuit, and the signal of the ultrasonic transducer successively passes through low-pass filtering
Circuit, voltage comparator circuit are input to central controller, the signal of the ultrasonic transducer also pass through chip be input to it is described
Central controller.
3. fire hydrant detection device based on ultrasound according to claim 1, it is characterised in that: the ultrasonic signal
Energizing circuit includes charge power supply, MOSET pipe, storage capacitor, charging resistor and transformer, and charging resistor one end connection is filled
Power supply, the other end are grounded by storage capacitor, are connected in parallel on the storage capacitor two after the transformer and the series connection of MOSET pipe
End.
4. fire hydrant detection device based on ultrasound according to claim 2, it is characterised in that: the low-pass filtering electricity
Road includes resistance and capacitor, and the low-pass filter circuit can filter out the ingredient that frequency in incoming electric signal is higher than cutoff frequency.
5. fire hydrant detection device based on ultrasound according to claim 1, it is characterised in that: described including shell
Ultrasonic transducer is placed in the end of the shell, and the shell is equipped with handle, and the key switch is arranged in the handle
On.
6. fire hydrant detection device based on ultrasound according to claim 2, it is characterised in that: the chip model is
TMS320F28335。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820541133.3U CN208188048U (en) | 2018-04-16 | 2018-04-16 | A kind of fire hydrant detection device based on ultrasound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820541133.3U CN208188048U (en) | 2018-04-16 | 2018-04-16 | A kind of fire hydrant detection device based on ultrasound |
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| Publication Number | Publication Date |
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| CN208188048U true CN208188048U (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820541133.3U Expired - Fee Related CN208188048U (en) | 2018-04-16 | 2018-04-16 | A kind of fire hydrant detection device based on ultrasound |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397697A (en) * | 2020-04-08 | 2020-07-10 | 河海大学常州校区 | Water level ultrasonic detection method |
| CN111402550A (en) * | 2020-02-20 | 2020-07-10 | 黑龙江大学 | City fire hydrant monitoring facilities based on NB-IoT technique |
| CN111855823A (en) * | 2020-07-22 | 2020-10-30 | 岩联(武汉)科技有限公司 | Ultrasonic transducer rapid excitation device and control method |
| WO2021238451A1 (en) * | 2020-05-28 | 2021-12-02 | 伊玛精密电子（苏州）有限公司 | Ultrasonic displacement sensor |
-
2018
- 2018-04-16 CN CN201820541133.3U patent/CN208188048U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111402550A (en) * | 2020-02-20 | 2020-07-10 | 黑龙江大学 | City fire hydrant monitoring facilities based on NB-IoT technique |
| CN111397697A (en) * | 2020-04-08 | 2020-07-10 | 河海大学常州校区 | Water level ultrasonic detection method |
| WO2021238451A1 (en) * | 2020-05-28 | 2021-12-02 | 伊玛精密电子（苏州）有限公司 | Ultrasonic displacement sensor |
| CN111855823A (en) * | 2020-07-22 | 2020-10-30 | 岩联(武汉)科技有限公司 | Ultrasonic transducer rapid excitation device and control method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181204 Termination date: 20210416 |
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| CF01 | Termination of patent right due to non-payment of annual fee |