CN209026528U - A kind of leakage water detector - Google Patents
A kind of leakage water detector Download PDFInfo
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- CN209026528U CN209026528U CN201821762376.6U CN201821762376U CN209026528U CN 209026528 U CN209026528 U CN 209026528U CN 201821762376 U CN201821762376 U CN 201821762376U CN 209026528 U CN209026528 U CN 209026528U
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- electric signal
- water detector
- leakage water
- cpu
- filter circuit
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Abstract
The utility model relates to detecting water leakage technical fields, disclose a kind of leakage water detector, water leakage situation are measured in different environment to realize, and can accurately judge the position of leak, easy to use, implementation cost is low；The leakage water detector of the utility model, including sensor, the selecting module being connected with sensor, the CPU being connected with selecting module and the display screen being connected with CPU；Vibration signal is converted to electric signal for acquiring the vibration signal generated in environment to be measured by leak by sensor；The electric signal of selection is sent to CPU for choosing the electric signal of setpoint frequency section from electric signal by selecting module；CPU is used to generate frequency spectrum according to electric signal and be sent to display screen and be shown, wherein the amplitude of frequency spectrum indicates the seriousness of leak, and amplitude is bigger, indicates that leak is more serious.
Description
Technical field
The utility model relates to detecting water leakage technical field more particularly to a kind of leakage water detectors.
Background technique
Underground seepy question, so far always many water-supplying unit and with water rich and influential family feel headache the problem of, currently, having not
It is few that leakage point is detected by acoustical signal Correlation Analysis Technique, mainly advised according to the generation of voice signal in leak and propagation
Rule, is detected to leak source voice signal and is made correlation analysis, thus judge the position of leak source, and existing leak detecting device is main
Determine leak information by acquisition leak source signal, still, current leak detecting device in continuous mode by ambient enviroment and
The interference of ground square signal is big, so that signal acquisition be made to be inaccurate, further results in the judgement inaccuracy for leakage point.
Therefore, how to realize and measure water leakage situation in different environment, and can accurately judge the position of leak, at
For a urgent problem.
Utility model content
The utility model aim is to provide a kind of leakage water detector, to realize the measurement leak feelings in different environment
Condition, and can accurately judge the position of leak, easy to use, implementation cost is low.
To achieve the above object, the utility model provides a kind of leakage water detector, including sensor and the sensor
Connected selecting module, the CPU being connected with the selecting module and the display screen being connected with the CPU；
The sensor turns for acquiring the vibration signal generated in environment to be measured by leak, and by the vibration signal
It is changed to electric signal；
The selecting module from the electric signal for choosing the electric signal of setpoint frequency section, and by the electric signal of selection
It is sent to the CPU；
Preferably, the selecting module includes filter circuit and the analog switch that is connected with the filter circuit, the mould
Quasi- switch is connected with the CPU；
The filter circuit is quadravalence filter circuit, and quadravalence filter circuit described in every two forms an eight rank bandpass filterings
Circuit, each eight ranks bandwidth-limited circuit are used to filter the electric signal of special frequency band；
The analog switch is turned on or off for controlling each quadravalence filter circuit.
Preferably, each described eight ranks bandwidth-limited circuit includes an operation amplifier chip and its peripheral circuit, often
A operation amplifier chip includes two-way quadravalence filter circuit, and per on the front end circuit and back-end circuit of quadravalence filter circuit all the way
All it is connected with an analog switch；
Preferably, the leakage water detector further includes the first amplification module and third amplification module；
First amplification module is connected between the analog switch and the CPU, for eight rank bandpass filterings are electric
The electric signal for passing by filter amplifies；
The third amplification module is connected between the sensor and the selecting module, for the sensor is defeated
The selecting module is transferred to after electric signal amplification out.
Preferably, the leakage water detector further includes the second amplification module being connected with the first amplification module, and described second
Amplification module amplifies voice signal for converting electrical signals to voice signal.
Preferably, the leakage water detector further includes monitoring headpone, the monitoring headpone and the second amplification module phase
Even, for monitoring through the amplified voice signal of the second amplification module.
Preferably, the sensor is vibration pickup, and the vibration pickup includes at least four, and at least four vibration pickup is all
It is connected with the selecting module.
The utility model has the following beneficial effects:
The utility model provides a kind of leakage water detector, including sensor, the selecting module being connected with sensor and selection
Display screen module connected CPU and be connected with CPU；Wherein sensor generates in environment to be measured because of leak for acquiring
Vibration signal, and vibration signal is converted into electric signal；Selecting module is used to choose the electric signal of setpoint frequency section, and will be electric
Signal is sent to CPU；CPU is used to generate frequency spectrum according to electric signal and be sent to display screen and be shown；The amplitude of frequency spectrum indicates
The seriousness of leak, amplitude is bigger, indicates that leak is more serious；It can flexibly be chosen for different soil properties by being equipped with selecting module
The electric signal of different frequency sections, and frequency spectrum is generated according to the electric signal, it is able to achieve and measures water leakage situation in different environment, and
It can accurately judge the position of leak, and the leakage water detector is lightly easy to carry, it is easy to use.
Below with reference to accompanying drawings, the utility model is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.In attached drawing
In:
Fig. 1 is the component annexation figure of the leakage water detector of the preferred embodiment in the utility model；
Fig. 2 is the quadravalence high-pass filtering circuit figure of the 100HZ of the preferred embodiment in the utility model；
Fig. 3 is the fourth order low-pass filter circuit figure of the 500HZ of the preferred embodiment in the utility model.
Specific embodiment
The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical." first ", " second " used in the utility model patent application specification and claims and similar word
Language is not offered as any sequence, quantity or importance, and is intended merely to facilitate and distinguishes to corresponding components.Equally,
The similar word such as "one" or " one " does not indicate that quantity limits, but indicates that there are at least one." connection " or " connected "
It is not limited to physics or mechanical connection etc. similar word, but may include electrical connection, either directly
Or it is indirect.
Referring to Fig. 1, the present embodiment provides a kind of leakage water detectors, including sensor 1, the choosing being connected with the sensor 1
Select module 2, the CPU3 being connected with the selecting module 2 and the display screen 4 being connected with the CPU3；
The sensor 1 is for acquiring the vibration signal generated in environment to be measured by leak, and by the vibration signal
Be converted to electric signal；
The selecting module 2 from the electric signal for choosing the electric signal of setpoint frequency section, and by the telecommunications of selection
Number it is sent to the CPU3；
The CPU3 is shown for generating frequency spectrum according to the electric signal and being sent to the display screen 4, wherein frequency
The amplitude of spectrum indicates the seriousness of leak, and amplitude is bigger, indicates that leak is more serious.
Above-mentioned leakage water detector can flexibly choose different frequency sections for different soil properties by being equipped with selecting module 2
Electric signal, and frequency spectrum is generated according to the electric signal, it is able to achieve in different environment and measures water leakage situation, and can accurately judge
The position of leak out further accurately obtains pipeline aging and damaged position and situation；And the leakage water detector is lightly just
It is easy to use in carrying.
It should be noted that high pressure water flow leak at pipe leakage point, which can wash away duct wall, forms vibration, meanwhile, can also
The soil around leakage point is washed away, friction occurs between soil and generates vibration, therefore, occurs to generate when pipe leakage with one
Determine the vibration signal of intensity.
As the present embodiment preferred embodiment, selecting module 2 includes filter circuit and the mould being connected with filter circuit
Quasi- switch, analog switch are connected with CPU3；
In the present embodiment, using quadravalence filter circuit, quadravalence filter circuit described in every two forms an eight rank band logicals filter
Wave circuit, each eight ranks bandwidth-limited circuit are used to filter the electric signal of special frequency band；
Analog switch is turned on or off for controlling each quadravalence filter circuit.
Preferably, each eight rank bandwidth-limited circuit includes an operation amplifier chip and its peripheral circuit, Mei Geyun
Calculating amplification chip includes two-way quadravalence filter circuit, and is all connected in the every front end circuit of quadravalence filter circuit and back-end circuit all the way
It is connected to an analog switch.Specifically, the electric signal to export sensor divides into the signal of four frequency bands, the present embodiment
In share 3 eight rank bandwidth-limited circuits, in the specific implementation, per the front end circuit of quadravalence filter circuit all the way and postposition electricity
Road is all connected with an analog switch, wherein being used as fourth order low-pass filtering all the way (allows logical lower than the signal of setpoint frequency
It crosses)；Another way is used as quadravalence high-pass filtering (signal higher than setpoint frequency is allowed to pass through), then the two-way quadravalence filter circuit shape
At an eight rank bandwidth-limited circuits, the electric signal in some frequency band can be filtered out.By the frequency within the scope of 100HZ-500HZ
It is set as lowpass frequency section；By the frequency within the scope of 500HZ-1200HZ be set as in lead to frequency band；It will be within the scope of 1200HZ-5000HZ
Frequency be set as high-pass equipment section, then the frequency within the scope of 100HZ-5000HZ be all-pass frequency band.Then this three eight rank band logicals
Filter circuit be respectively used to filtering lowpass frequency section, in lead to the electric signal of frequency band and high-pass equipment section.If desired it filters out
When the signal of all-pass frequency band, by adjusting the completion of corresponding eight ranks bandwidth-limited circuit, specifically, using for filtering low pass
Quadravalence high-pass filtering circuit in eight rank bandwidth-limited circuits of frequency band, and the eight rank band logicals for filtering high-pass equipment section
Fourth order low-pass filter circuit in filter circuit is completed jointly.
Further, for filtering the electric signal of lowpass frequency section, to achieve the purpose that filter lowpass frequency section, CPU
The quadravalence that the quadravalence high pass and 500HZ for filtering the 100HZ of the filter circuit of lowpass frequency section are opened by analog switch is low
It is logical, that is, filter out 100HZ or more 500HZ frequency below.Wherein, 100HZ quadravalence high-pass filtering circuit figure as shown in Fig. 2,
The analog switch in front end circuit and back-end circuit is opened respectively, then signal is from the analog switch 74HC1G66's on front end circuit
Pin 1 inputs and is transmitted to the output of pin 2 of analog switch, then defeated from the pin 10 of operation amplifier chip TLC2274IDR
Enter, and exported by the pin 14 of operation amplifier chip TLC2274IDR, then by the analog switch 74HC1G66 in back-end circuit
Pin 1 be input to pin 2 output.
Wherein, the fourth order low-pass filter circuit figure of 500HZ as shown in figure 3, open in front end circuit and back-end circuit respectively
Analog switch, then signal from the pin 1 of the analog switch 74HC1G66 on front end circuit input and be transmitted to analog switch
Pin 2 exports, and then inputs from the pin 3 of operation amplifier chip TLC2274IDR, and by operation amplifier chip TLC2274IDR
Pin 7 export, pin 2 is then input to by the pin 1 of the analog switch 74HC1G66 in back-end circuit and is exported.It needs to illustrate
, operation amplifier chip TLC2274IDR have the function of from operation amplifier, the present embodiment based on operation amplifier chip design
Filter circuit, is able to achieve the purpose amplified in filtering, and the pin 11 of operation amplifier chip TLC2274IDR also draws as public
Foot ground connection, pin 4 also connect the operating voltage of a 5V as common pin, in addition, operation amplifier chip TLC2274IDR
Pin 4 is also connected with capacitor C49, can be filtered to the electric current in circuit, and the noise that electric current generates in suppression circuit guarantees letter
Accuracy number in transmission process, is all connected with the single supply of a 2.5V, which is on resistance R14 and capacitor C5
One bias voltage can guarantee the stability of signal, guarantee that signal will not be lost and be distorted.
It should be noted that if need choose in lead to frequency band electric signal, then open 500HZ quadravalence high pass and
The fourth order low-pass of 1200HZ, if desired choose high-pass equipment section electric signal, then need to open 1200HZ quadravalence high pass and
The fourth order low-pass of 5000HZ.It is worth noting that the electric signal of some frequency band is chosen in the present embodiment, it is corresponding by opening
Filter circuit analog switch the road filter circuit is connected, by be connected every two filter circuit, can complete some frequency
The selection of the operating mode of rate section.For example, then opening the quadravalence high-pass filtering of 100HZ to select low-pass filtering operating mode
Two analog switches on circuit, while two analog switches on the fourth order low-pass filter circuit of 500HZ are opened, it is optional at this time
The electric signal of lowpass frequency section is taken, the operating mode open theory of excess-three frequency band is consistent with this, here, seldom doing superfluous
It states.An analog switch is all connected on the front end circuit of every road filter circuit and back-end circuit, can neatly control filtering
The working condition of circuit, convenient and quickly filtering of the realization to the electric signal of different frequency sections.
As the present embodiment preferred embodiment, leakage water detector further includes the first amplification module, the first amplification module
It is connected between analog switch and CPU3.Specifically, the first amplification module is rear class amplifying circuit, which is used for
Signal in some selected frequency band is amplified, signal is enable more clearly to be transmitted.
As the present embodiment preferred embodiment, leakage water detector further includes that second to be connected with the first amplification module is put
Big module, the second amplification module amplify voice signal for converting electrical signals to voice signal.Wherein, this
Two amplification modules are power amplifier, which receives the electric signal that amplifies through above-mentioned rear class amplifying circuit, and by the telecommunications
Number it is converted into voice signal, is transferred to the monitoring headpone being connected with the power amplifier.When specifically used, user can be by this
Monitoring headpone listens to the voice signal in the second amplification module, and in the present embodiment, voice signal, which is embodied in, grows taste sound, and
The sound is at times strong and at other times weak, when voice signal is stronger, illustrates to monitor leak, and water leakage situation herein is more serious；Work as sound
When sound signal is weaker, illustrate to monitor leak, and water leakage situation is not very serious；When voice signal is very weak or almost without sound
When sound signal, illustrate that there is no water leakage situations herein.
Wherein, CPU3 is connect with rear class amplifying circuit, can generate frequency spectrum according to the electric signal amplified by rear class amplifying circuit,
And the frequency spectrum is shown by display screen 4, facilitate user can be clear by display screen 4 and intuitively sees monitoring result, in frequency spectrum
In, amplitude larger part explanation monitors leak herein, and water leakage situation is more serious；Amplitude smaller part explanation monitors to leak herein
Water, and water leakage situation is generally serious；Amplitude is gentle or there's almost no at amplitude explanation herein without leak.The present embodiment
In, combined by sound with frequency spectrum, can preferably help user accurately judge whether leak, and specific leak is tight
How weight situation is.
As the present embodiment preferred embodiment, sensor 1 is vibration pickup, and vibration pickup includes at least four.This implementation
It is four in example, specifically, respectively large size vibration pickup, medium size vibration pickup, small size vibration pickup and triangle vibration pickup.Wherein,
Large size vibration pickup is larger suitable for ambient noise signal, and the place that soil property is harder；Medium size vibration pickup is suitable for fire control well, corridor
The harder place of the quality such as water supply line；Small size vibration pickup is suitable for the softer place of soil property；Triangle vibration pickup is suitable for narrow
Place.When specifically used, the soil property and space for being directed to environment to be measured choose applicable sensor 1, wherein each sensing
Device 1 can detect the vibration signal of 100HZ-5000HZ, then according to the conduit types and soil property selection need in environment to be measured
The frequency band to be analyzed is low-pass filtering, middle pass filter, high-pass filtering or all-pass wave filtering.It can by four different vibration pickups
More accurately to be detected for different soil properties or environment to be measured, under the specific category and different mode in conjunction with vibration pickup
Frequency band signals, the disturbing factor of environment to be measured can be overcome, to more accurately find leakage point, further more accurately
Judge the specific water leakage situation of the point.
As the present embodiment preferred embodiment, leakage water detector further includes third amplification module, third amplification module
It is connected between sensor 1 and selecting module 2, is transferred to selecting module 2 after the electric signal amplification for exporting sensor 1.
In the present embodiment third amplification module be pre-amplification circuit, wherein vibration pickup acquisition signal by pre-amplification circuit into
It is transferred to selecting module 2 after row amplification, is avoided that electric signal is distorted in transmission process, more clearly to be connect by selecting module 2
It receives.
To sum up, the utility model provides a kind of leakage water detector, in actual detection, first according to environment to be measured, chooses
Then the leakage water detector is directed to each tested point and carries out real-time detection, specifically, in the leakage water detector by tested point
Vibration pickup detects the vibration signal in environment to be measured, and the vibration signal is switched to electric signal, should by third amplification module
Electric signal is transferred to selecting module after amplifying, the analog switch in CPU control selections module on certain filtering circuit can select
The electric signal in certain frequency band is selected, and frequency spectrum is generated according to the electric signal, user can be judged by frequency spectrum in the environment to be measured
Leakage point, and judge according to the amplitude of frequency spectrum the specific water leakage situation at leakage point；Meanwhile the electric signal quilt in the frequency band
It is further amplified and is converted into voice signal by the second amplification module after the amplification of first amplification module, user can be by monitoring ear
Machine monitors the voice signal of the second amplification module conversion, and user can judge the leak in the environment to be measured according to the voice signal
Point, and the specific water leakage situation at leakage point is judged according to the power of voice signal.Integral spectrum and voice signal, can be more quasi-
True judges the water leakage situation of environment to be measured.And the leakage water detector is lightly easy to carry, it is easy to use.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of leakage water detector, which is characterized in that including sensor (1), the selecting module being connected with the sensor (1)
(2), the CPU (3) being connected with the selecting module (2) and the display screen (4) being connected with the CPU (3)；
The sensor (1) turns for acquiring the vibration signal generated in environment to be measured by leak, and by the vibration signal
It is changed to electric signal；
The selecting module (2) from the electric signal for choosing the electric signal of setpoint frequency section, and by the electric signal of selection
It is sent to the CPU (3)；
The CPU (3) is shown for generating frequency spectrum according to the electric signal and being sent to the display screen (4), wherein frequency
The amplitude of spectrum indicates the seriousness of leak, and amplitude is bigger, indicates that leak is more serious.
2. leakage water detector according to claim 1, which is characterized in that the selecting module (2) include filter circuit and
The analog switch being connected with the filter circuit, the analog switch are connected with the CPU (3)；
The filter circuit is quadravalence filter circuit, and quadravalence filter circuit described in every two forms an eight rank bandpass filtering electricity
Road, each eight ranks bandwidth-limited circuit are used to filter the electric signal of special frequency band；
The analog switch is turned on or off for controlling each quadravalence filter circuit.
3. leakage water detector according to claim 2, which is characterized in that each described eight ranks bandwidth-limited circuit includes
One operation amplifier chip and its peripheral circuit, each operation amplifier chip include two-way quadravalence filter circuit, and per all the way four
An analog switch is all connected on the front end circuit and back-end circuit of rank filter circuit.
4. leakage water detector according to claim 2, which is characterized in that the leakage water detector further includes the first amplification mould
Block and third amplification module；
First amplification module is connected between the analog switch and the CPU (3), is used for eight rank bandwidth-limited circuits
The electric signal of filtering amplifies；
The third amplification module is connected between the sensor (1) and the selecting module (2), is used for the sensor
(1) selecting module (2) are transferred to after the electric signal amplification exported.
5. leakage water detector according to claim 4, which is characterized in that the leakage water detector further includes and first amplifies
The second connected amplification module of module, second amplification module believe sound for converting electrical signals to voice signal
It number amplifies.
6. leakage water detector according to claim 5, which is characterized in that the leakage water detector further includes monitoring headpone,
The monitoring headpone is connected with second amplification module, for monitoring through the amplified voice signal of the second amplification module.
7. leakage water detector according to claim 1, which is characterized in that the sensor (1) is vibration pickup, the pick-up
Device includes at least four, and at least four vibration pickup is all connected with the selecting module (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821762376.6U CN209026528U (en) | 2018-10-29 | 2018-10-29 | A kind of leakage water detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821762376.6U CN209026528U (en) | 2018-10-29 | 2018-10-29 | A kind of leakage water detector |
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| CN209026528U true CN209026528U (en) | 2019-06-25 |
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ID=66908473
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163225A (en) * | 2018-10-29 | 2019-01-08 | 湖南普奇地质勘探设备研究院（普通合伙) | A kind of leakage water detector and its data processing method |
-
2018
- 2018-10-29 CN CN201821762376.6U patent/CN209026528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163225A (en) * | 2018-10-29 | 2019-01-08 | 湖南普奇地质勘探设备研究院（普通合伙) | A kind of leakage water detector and its data processing method |
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