CN201425515Y - Ambient noise display system - Google Patents
Ambient noise display system Download PDFInfo
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- CN201425515Y CN201425515Y CN2009201055006U CN200920105500U CN201425515Y CN 201425515 Y CN201425515 Y CN 201425515Y CN 2009201055006 U CN2009201055006 U CN 2009201055006U CN 200920105500 U CN200920105500 U CN 200920105500U CN 201425515 Y CN201425515 Y CN 201425515Y
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Abstract
The utility model provides an ambient noise display system comprising a main case, a sound-level meter main board, a display control main board and a noise display screen, wherein, the display controlmain board comprises a digital input interface, a digital output interface, a microcontroller, a real-time clock and an on-board power supply, the digital input interface, the digital output interface, the real-time clock and the on-board power supply are connected with the microcontroller respectively, the sound-level meter main board and the display control main board are installed inside the main case, an external microphone is electrically connected to the sound-level meter main board, the sound-level meter main board is electrically connected with the display control main board further,and the display control main board is electrically connected to the noise display screen. Compared with the universal main boards commonly used in the prior art, the sound-level meter main board and the display control main board employed in the utility model are only required to serve the functions associated with sound monitoring, thereby being simpler in structure and conducive to reduction inpower consumption and heat productivity.
Description
Technical field
The utility model relates to the environmental monitoring field, particularly a kind of neighbourhood noise display system.
Background technology
Along with The development in society and economy, noise problem becomes the topic of public's extensive concern gradually.Often be subjected to interference of noise on the airport, around the factory, building ground, highway, railway, some commerce and public place of entertainment that is positioned at urban central zone also can produce social noise, noise has become the importance of city environmental pollution, is a leading indicator of environmental evaluation.For the ease of environment is exercised supervision, the ambient noise level of current region need be understood by the public and environmental protection mechanism.
For the needs to environment noise monitoring, the noise display system of outdoor noise level has appearred in the prior art being used to show.These noise display systems can be gathered neighbourhood noise, and the sound pressure level of computing environment noise is also shown.But these noise display systems of the prior art have just shown the sound pressure level value of noise usually, because general public is understood acoustics knowledge, environment lack of knowledge, thereby can not recognize evaluation on the shown sound pressure level value of noise display system intuitively to the local environment situation, this has also just reduced the effect of environment supervision.
In addition, generally adopted the general industrial control host of operation system to realize in the existing noise display system, because the neighbourhood noise sound pressure level is calculated, sound pressure level shows that the correlation function kind that will finish is single, therefore, utilizes aforesaid general industrial control host and unnecessary.Use to general industrial control host is very big waste on hardware resource not only, and has bigger power consumption and thermal value, is unfavorable for the long-time reliability service of system, has also improved the cost of whole device.At last, the operating system in the existing noise display system lacks the operation monitoring function, can not recover from original state reliably when system crash.
The utility model content
The purpose of this utility model be overcome existing noise display system can only display noise sound pressure level information, power consumption is big, the long-time steady operation rate is lower and cost is higher defective, thereby provide a kind of low in energy consumption, cost is low and neighbourhood noise display system that can operation steady in a long-term.
To achieve these goals, the utility model provides a kind of neighbourhood noise display system, comprises mainframe box, sound meter mainboard, shows control main board and noise display screen; Wherein, described demonstration control main board comprises the noise judgment means that exceeds standard;
Described sound meter mainboard, demonstration control main board are installed in the described mainframe box; Outside microphone is electrically connected on the described sound meter mainboard, and described sound meter mainboard also is electrically connected with described demonstration control main board, and described demonstration control main board is electrically connected to described noise display screen;
After described sound meter mainboard receives voice signal from the microphone of outside, the noise figure that calculates is sent into described demonstration control main board, carry out the noise judgement that exceeds standard by the described noise judgment means that exceeds standard, and noise figure and the noise judged result that exceeds standard is shown on the noise display screen.
In the technique scheme, described demonstration control main board also comprises the time integrating device that exceeds standard.
In the technique scheme, described demonstration control main board also comprises memory storage and transmitting device.
In the technique scheme, described demonstration control main board comprises power supply on digital input interface, digital output interface, microcontroller, real-time clock and the plate, and power supply is connected with microcontroller respectively on described digital input interface, digital output interface, real-time clock and the plate.
In the technique scheme, described demonstration control main board comprises that also SD memory interface and plate carry flash memory; Described SD memory interface and plate carry flash memory and are electrically connected with power supply on the described plate, are connected with described microcontroller data.
In the technique scheme, described demonstration control main board also comprises and is used for the outer monitoring circuit of sheet that the duty to described demonstration control main board monitors.
In the technique scheme, described sound meter mainboard comprises power supply and digital output interface on power supply unit, A weighted wave filter, signal amplification circuit, A/D converter, microcontroller, the plate; Wherein, described A weighted wave filter is connected to the input of microcontroller by signal amplification circuit, and the output of microcontroller is connected with described digital output interface; Power supply is connected respectively to described A weighted wave filter, signal amplification circuit and microcontroller on the described plate.
In the technique scheme, the microcontroller in the described sound meter mainboard also comprises monitoring circuit in the sheet that the duty to described sound meter mainboard monitors.
In the technique scheme, described noise display screen comprises 4 charactrons being used for display noise value size, be used for first pilot lamp that display noise exceeds standard, be used for second pilot lamp that display noise do not exceed standard and be used to show the exceed standard charactron of time of cumulative noise.
In the technique scheme, described mainframe box comprises chassis backplane and chassis cover; Three-phase power socket and power switch are installed on described chassis backplane, and the BNC socket that is used to connect external microphone; Front side wall at described chassis backplane is equipped with RS-232 socket and SD card slot; The LCD display that is used to show the mainframe box duty is installed on chassis cover.
Advantage of the present utility model is:
1, the sound meter mainboard that is adopted in the utility model with show control main board and prior art in general mainboard commonly used compare owing to only need finish the function relevant, so structurally more simple, help reducing power consumption and thermal value with noise monitoring.
2, all adopted corresponding monitoring circuit on sound meter mainboard in the utility model and the demonstration control main board, these monitoring circuits are worked when undesired because of internal and external interference influence at mainboard, can carry out reset operation to mainboard, make mainboard return to normal operating conditions, the assurance system moves continually and steadily, thereby the stability of whole device is provided.
Whether 3, the size that the noise display screen in the utility model not only can display noise can also exceed standard and the time of exceeding standard of noise shows to noise, helps the understanding and the monitoring of general public.
Description of drawings
Fig. 1 is the structural representation of neighbourhood noise display system of the present utility model;
Fig. 2 is the hardware configuration synoptic diagram of the sound meter mainboard in the neighbourhood noise display system of the present utility model;
Fig. 3 is the hardware configuration synoptic diagram of the demonstration control main board in the neighbourhood noise display system of the present utility model;
Fig. 4 is the three-view diagram of the mainframe box in the neighbourhood noise display system of the present utility model;
Fig. 5 is the scheme of installation of the mainframe box in the neighbourhood noise display system of the present utility model;
Fig. 6 is the synoptic diagram of the noise display screen in the neighbourhood noise display system of the present utility model.
The drawing explanation
101 mainframe boxes, 102 sound meter mainboards 103 show control main board
104 power supplys, 105 noise display screens, 106 external microphone
201 chassis backplanes, 202 chassis covers, 203 BNC sockets
204 three-phase power sockets and power switch 205 SD card slots
301 4 charactrons of 206 RS-232 sockets, 207 LCD display
302 first LED light, 303 second LED light
304 LED charactrons, 401 ICP power supply units, 402 A weighted wave filters
403 signal amplification circuits, 404 A/D converters, 405 processors
Power supply 408 digital output interfaces on 406 microcontrollers, 407 plates
409 interior monitoring circuit 501 digital input interfaces 502 digital output interfaces
503 microcontrollers, 504 SD memory interfaces, 505 plates carry flash memory
Power supply on 506 real-time clocks, 507 plates
Embodiment
Below in conjunction with the drawings and specific embodiments the neighbourhood noise display system in the utility model is illustrated.
As shown in Figure 1, neighbourhood noise display system of the present utility model comprises mainframe box 101, sound meter mainboard 102, shows control main board 103, power supply 104 and noise display screen 105.Sound meter mainboard 102 wherein, demonstration control main board 103 and power supply 104 all are positioned at described mainframe box 101, described sound meter mainboard 102 is connected with the microphone 106 of outside, described demonstration control main board 103 is connected with noise display screen 105, and described power supply 104 provides electric energy for described sound meter mainboard 102 with described demonstration control main board 103.
On hardware is realized, sound meter mainboard 102 can be realized by the embedded acquisition module of a low-power consumption, as shown in Figure 2, power supply 407 and digital output interface 408 on the microcontroller 406 that includes ICP power supply unit 401, A weighted wave filter 402, signal amplification circuit 403, built-in A/D converter 404 and processor 405 on this module, plate, ICP power supply unit 401 wherein are external microphone 106 power supplies.402 pairs in A weighted wave filter carries out filtering from external microphone 106 received simulating signals, makes the frequency response conformance with standard requirement of simulating signal.Signal amplification circuit 403 receives simulating signal from A weighted wave filter 402, and adjusts the gain of described simulating signal, makes analog signal range meet the requirement of A/D converter.Described A/D converter 404 is finished the function of described A/D converting unit, being numerical information with analog signal conversion; And the size of processor 405 calculating noises in the microcontroller 406, finishing the function of noise calculation unit, and by digital output interface 408 with noise figure output, power supply 407 is the each several part circuit supply on the sound meter mainboard 102 on the plate.For the operation to sound meter mainboard 102 monitors, monitoring circuit 409 in described microcontroller also has independently sheet, in the regular hour, the time counter of monitoring circuit 409 in the sheet if microcontroller is not reset, the working state abnormal that shows microcontroller this moment, the time counter of monitoring circuit 409 microcontroller that overflows and reset in the sheet.In the present embodiment, the time counter of monitoring circuit 409 overflows duration and is set in 10.6998 milliseconds in the sheet in the sound meter mainboard 102.
Show that control main board 103 is used for dBA value to noise and whether meets environmental standard and judge, and judged result is exported to noise display screen 105.According to the above-mentioned functions that shows control main board 103, this mainboard can comprise the noise judgment means that exceeds standard.Because in environmental standard, in zones of different, different time, whether the size of noise meets environmental standard different regulations, therefore needs the special noise judgment means that exceeds standard and judges.Store the information in the existing environmental standard in this device, after this device obtains the noise figure size from sound meter mainboard 102, resulting noise figure size is compared with the environmental standard information of being stored, thereby draw the conclusion whether noise exceeds standard, provide the corresponding signal value that whether exceeds standard according to judged result and give noise display screen 105.In a kind of preferred implementation, show that control main board 103 can also comprise the time integrating device that exceeds standard, this device is added up the time that (as one day, a week, January or 1 year) exceeds standard in the certain hour section according to the exceed standard judged result of judgment means of noise, and the resulting net result of accumulative total also can be exported to noise display screen 105.In another preferred implementation, show that control main board 103 also can comprise memory storage and transmitting device.Described memory storage will be stored each noise size constantly, and the result who whether is exceeded standard by resulting certain moment external environment condition of the judgment means that exceeds standard is stored, and in addition, also can store exceeding standard the cumulative time in the certain hour section.Described transmitting device then can output to the outside with the event memory of memory storage, makes the user can extract monitor message.
In the hardware realization, show that control main board 103 can realize by a low-power-consumption embedded control module, the concrete structure of demonstration control main board 103 is relevant with the function that the demonstration control main board will be finished.With include the judgment means that exceeds standard in the preamble, the demonstration control main board of exceed standard time integrating device, memory storage and transmitting device is example, the structure of this mainboard comprises that digital input interface 501, digital output interface 502, microcontroller 503, SD memory interface 504, plate carry power supply 507 etc. on flash memory 505 (Flash), real-time clock 506 and the plate as shown in Figure 3.The noise data that microcontroller receives from sound meter mainboard 102 by digital input interface 501, and judged result and accumulated result are sent to the noise display screen by digital output interface 502, real-time clock 506 is high precision calendar clocks, microcontroller 503 from then on clock obtains current date and time, SD memory interface 504 carries flash memory 505 shared serial data interfaces with plate and links to each other with microcontroller 503, carry flash memory by be in due course read-write SD card or plate of microcontroller 503 decision, power supply 507 is for showing the each several part circuit supply on the control main board on the plate.Include only the exceed standard judging unit and the time accumulated unit that exceeds standard if show control main board 103 on function, then SD memory interface 504 among Fig. 3 and plate carry flash memory 505 and can save.
For the operation that shows control main board 103 is monitored, in showing control main board 103, also can have independently monitoring circuit (not shown in Figure 3) outside the sheet, in the regular hour, the time counter of the outer monitoring circuit of sheet if microcontroller is not reset, the working state abnormal that shows microcontroller this moment, the then time counter of the outer monitoring circuit of the sheet microcontroller that overflows and reset.Compare with monitoring circuit in the sheet in the sound meter mainboard 102, it is longer that the time counter that shows the outer monitoring circuit of sheet of control main board 103 overflows duration, in the present embodiment, can be set at 1.6 seconds.
From as can be seen to sound meter mainboard 102 and the above-mentioned explanation that shows control main board 103, two mainboards have all only comprised the correlation function module with walkaway, removed many functional modules that have nothing to do with walkaway in the general mainboard, therefore tangible reduction has all been arranged on power consumption and cost.In addition, on two mainboards integrated monitoring circuit work when undesired because of the internal and external interference influence at mainboard, can carry out reset operation to mainboard, make mainboard return to normal operating conditions, the assurance system moves continually and steadily.
As previously mentioned; sound meter mainboard 102, demonstration control main board 103 and power supply 104 all are installed in the described mainframe box 101; the utility model there is no special regulation to the shape of mainframe box 101; as long as it can satisfy protection sound meter mainboard 102, show control main board 103 and power supply 104, and can realize that they and the data transmission of outside get final product.In Fig. 4 and Fig. 5, provided mainframe box 101 synoptic diagram in one embodiment, the mainframe box among this embodiment is the metal cabinet of a rectangular parallelepiped.Its length is 177 millimeters, and wide is 152 millimeters, and height is 94 millimeters, and the cabinet wall thickness is 1 millimeter.Mainframe box 101 comprises chassis backplane 201 and chassis cover 202, and chassis cover 202 can separate with chassis backplane 201, and chassis cover 202 is connected on the chassis backplane 201 by screw.Have two openings on the rear wall of chassis backplane 201, oblong openings is wherein installed three-phase power socket and power switch 204, and three-phase power socket and power switch are integrated; Circular open wherein is used to install BNC socket 203, and BNC socket 203 is used to connect outside microphone.Have two openings on the front side wall of chassis backplane 201, oblong openings is used to install RS-232 (a kind of digital output interface) socket 206, and another rectangle narrow openings is used to install SD card slot 205.The centre position of chassis cover 202 has an oblong openings, is used to install the monochromatic LCD display 207 of a 128x64 pixel, and LCD display 207 is used to show the duty of mainframe box 101.
When showing that control main board 103 is installed in the above-mentioned mainframe box 101, it should be fixed on the chassis backplane 201, and the sidewall of chassis backplane 201 should be close in its side, make to show that digital output interface (as RS-232 interface) on the control main board 103 and SD memory interface align with RS-232 socket 206, SD card slot 205 on chassis backplane 201 sidewalls respectively.In the time of in sound meter mainboard 102 is installed in mainframe box 101, it is installed in the top of described demonstration control main board 103, sound meter mainboard 102 with show between the control main board 103 digital interface that is connected both by board to board connector.
Neighbourhood noise display system of the present utility model in the course of the work, gather the noise size of current place environment by the microphone of outside, microphone will include the analog signal transmission of noise size information to described sound meter mainboard 102,102 pairs of described simulating signals of sound meter mainboard are done signal condition, after the A/D conversion, the concrete numerical value of calculating noise size, and resulting numerical value sent to described demonstration control main board 103, described demonstration control main board 103 is according to the correlation values of noise size, whether the noise of environment nowadays exceeded standard judge, and accumulative total exceeds standard the time under situation about exceeding standard.The judged result whether described noise magnitude numerical value, noise exceed standard and the time that totally exceeds standard etc. all can show on noise display screen 105.In addition, the judged result whether described noise magnitude numerical value, noise exceed standard and the time that totally exceeds standard etc. all can be stored in showing control main board 103, and the user can read the data of being stored by corresponding interface.
It should be noted last that above embodiment is only unrestricted in order to the explanation the technical solution of the utility model.Although the utility model is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, the technical solution of the utility model is made amendment or is equal to replacement, the spirit and scope that do not break away from technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (10)
1, a kind of neighbourhood noise display system is characterized in that, comprises mainframe box (101), sound meter mainboard (102), shows control main board (103) and noise display screen (105); Wherein, described demonstration control main board (103) comprises the noise judgment means that exceeds standard;
Described sound meter mainboard (102), demonstration control main board (103) are installed in the described mainframe box (101); Outside microphone is electrically connected on the described sound meter mainboard (102), and described sound meter mainboard (102) also is electrically connected with described demonstration control main board (103), and described demonstration control main board (103) is electrically connected to described noise display screen (105);
After described sound meter mainboard (102) receives voice signal from the microphone of outside, the noise sizes values that calculates is sent into described demonstration control main board (103), carry out the noise judgement that exceeds standard by the described noise judgment means that exceeds standard, and noise size and the noise judged result that exceeds standard is gone up at noise display screen (105) and shows.
2, neighbourhood noise display system according to claim 1 is characterized in that, described demonstration control main board (103) also comprises the time integrating device that exceeds standard.
3, neighbourhood noise display system according to claim 2 is characterized in that, described demonstration control main board (103) also comprises memory storage and transmitting device.
4, according to claim 1 or 2 or 3 described neighbourhood noise display systems, it is characterized in that, described demonstration control main board (103) comprises power supply (507) on digital input interface (501), digital output interface (502), microcontroller (503), real-time clock (506) and the plate, and power supply (507) is connected with microcontroller (503) respectively on described digital input interface (501), digital output interface (502), real-time clock (506) and the plate.
5, neighbourhood noise display system according to claim 4 is characterized in that, described demonstration control main board (103) comprises that also SD memory interface (504) and plate carry flash memory (505); Described SD memory interface (504) and plate carry flash memory (505) and are electrically connected with power supply (507) on the described plate, are connected with described microcontroller (503) data.
6, neighbourhood noise display system according to claim 4 is characterized in that, described demonstration control main board (103) also comprises and is used for the outer monitoring circuit of sheet that the duty to described demonstration control main board (103) monitors.
7, according to claim 1 or 2 or 3 described neighbourhood noise display systems, it is characterized in that described sound meter mainboard (102) comprises power supply (407) and digital output interface (408) on power supply unit (401), A weighted wave filter (402), signal amplification circuit (403), A/D converter (404), microcontroller (406), the plate; Wherein, described A weighted wave filter (402) is connected to the input of microcontroller (406) by signal amplification circuit (403), and the output of microcontroller (406) is connected with described digital output interface (408); Power supply on the described plate (407) is connected respectively to described A weighted wave filter (402), signal amplification circuit (403) and microcontroller (406).
8, neighbourhood noise display system according to claim 7 is characterized in that, the microcontroller in the described sound meter mainboard (102) also comprises monitoring circuit (409) in the sheet that the duty to described sound meter mainboard (102) monitors.
9, neighbourhood noise display system according to claim 1 and 2, it is characterized in that described noise display screen (105) comprises 4 charactrons (301) of being used for display noise value size, be used for first pilot lamp (302) that display noise exceeds standard, be used for second pilot lamp (303) that display noise do not exceed standard and be used to show the exceed standard charactron (304) of time of cumulative noise.
10, neighbourhood noise display system according to claim 1 is characterized in that, described mainframe box (101) comprises chassis backplane (201) and chassis cover (202); Three-phase power socket and power switch (204) are installed on described chassis backplane (201), and the BNC socket (203) that is used to connect external microphone; Front side wall at described chassis backplane (201) is equipped with RS-232 socket (206) and SD card slot (205); The LCD display (207) that is used to show the mainframe box duty is installed on chassis cover (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201055006U CN201425515Y (en) | 2009-02-13 | 2009-02-13 | Ambient noise display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201055006U CN201425515Y (en) | 2009-02-13 | 2009-02-13 | Ambient noise display system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201425515Y true CN201425515Y (en) | 2010-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201055006U Expired - Lifetime CN201425515Y (en) | 2009-02-13 | 2009-02-13 | Ambient noise display system |
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| Country | Link |
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| CN (1) | CN201425515Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181116A (en) * | 2015-05-27 | 2015-12-23 | 智联通建筑科技（北京）有限公司 | Portable digital noise meter |
-
2009
- 2009-02-13 CN CN2009201055006U patent/CN201425515Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181116A (en) * | 2015-05-27 | 2015-12-23 | 智联通建筑科技（北京）有限公司 | Portable digital noise meter |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100317 |