CN212115676U - Public address system installation and debugging system - Google Patents
Public address system installation and debugging system Download PDFInfo
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- CN212115676U CN212115676U CN202020857958.3U CN202020857958U CN212115676U CN 212115676 U CN212115676 U CN 212115676U CN 202020857958 U CN202020857958 U CN 202020857958U CN 212115676 U CN212115676 U CN 212115676U
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Abstract
The utility model relates to a public address system installation debug system, belong to the technical field of public address system, an audio signal size that the audience that is used for the supplementary audience who has realized the different positions of public address system application audience mat heard differs at the within range that allows, it includes a plurality of sound intensity acquisition unit that are used for gathering the sound intensity of a plurality of check points in the public address system application and is used for exporting the signal processing module of aforementioned sound intensity highest value and minimum difference, the staff can be according to detecting sound intensity highest value and minimum installation debugging public address system, thereby the audio signal size that the audience that has realized the different positions of public address system application audience mat listened to supplementarily differs at the within range that allows, and then realized that public address system speaker makes the different positions of audience mat hear the audio signal that the size is suitable simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the technique of public address system and specifically relates to a public address system installation and debugging system is related to.
Background
The sound amplifying system is also called as a sound box system, and can amplify and output audio signals to improve the propagation distance of the audio signals, so that the audio signals can cover a wider range or occasions with more noisy environments, such as a stadium.
The amplification output of the audio signal by the sound amplifying system is realized through the loudspeaker, the position of the loudspeaker is fixed once the sound amplifying system is installed, and the positions and the directions of audiences at different positions relative to the loudspeaker are different, so that the audio signals of the loudspeakers can be different by different audiences, and the audio signals heard by the audiences at different positions are different in size.
If the size difference of the audio signals heard by the different positions of the auditorium is too large, the loudspeaker can not simultaneously enable the auditoriums at the different positions of the auditorium to hear the audio signals with proper sizes, so in the process of installing and setting the public address system, the audio signals received by the different positions of the auditorium need to be tested simultaneously, and then the installation position, the orientation, the height and the like of the loudspeaker of the public address system are adjusted according to the test result, so that the size difference of the audio signals heard by the different positions of the auditorium is within an allowable range, and the purpose that the loudspeakers enable the auditoriums at the different positions of the auditorium to hear the audio signals with proper sizes simultaneously as much as possible.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a public address system installation debug system, it can assist the audio signal size that the audience that realizes the different positions of public address system application audience seat listened to differ at the within range that allows, and then has realized that public address system speaker makes the different positions of audience seat listen to the audio signal that the size is suitable simultaneously.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a loudspeaker system installation and commissioning system comprising:
the sound intensity acquisition units are respectively used for acquiring the sound intensities of a plurality of detection points in the application occasion of the public address system so as to output sound pressure detection signals responding to the sound intensities;
and the signal processing module is coupled with the sound intensity acquisition unit and used for receiving the sound intensity signal so as to output a sound pressure difference value signal responding to the difference value of the highest value and the lowest value of the sound intensity.
Through adopting above-mentioned technical scheme, when carrying out the installation setting of public address system speaker, install the speaker of public address system earlier and set up in the assigned position temporarily, sound intensity acquisition unit can detect the sound intensity of a plurality of check points of public address system application, signal processing module can output the sound pressure difference value of highest sound intensity and minimum sound intensity in a plurality of check points, the staff judges whether the sound pressure difference value is in the allowed range, thereby confirm whether the installation that needs adjust the speaker sets up the position, the supplementary audio signal size that has realized that the audience of public address system application audience different positions listened differs in the allowed range promptly, and then realized that public address system speaker makes the different positions of auditorium hear the audio signal that the size is suitable simultaneously.
Furthermore, the sound intensity acquisition unit is in wireless communication connection with the signal processing module.
By adopting the technical scheme, the relative positions of the sound intensity acquisition unit and the signal processing module are more flexible, the position setting of the sound intensity acquisition unit and the signal processing module is facilitated, and the installation and debugging process of a sound amplifying system is further facilitated.
Further, the signal processing module includes:
the signal processing unit is coupled with the sound intensity acquisition unit, receives the sound intensity signal and responds to the highest value and the lowest value of the sound intensity signal to output the sound pressure difference signal;
and the display unit is coupled with the signal processing unit and used for receiving and displaying the sound pressure difference signal.
Through adopting above-mentioned technical scheme, signal processing module can show the sound pressure difference signal, and the staff can direct observation sound pressure difference signal, has further made things convenient for public address system's installation and debugging process.
Further, the installation and debugging system further comprises:
and the comparison prompting module is coupled with the signal processing module and used for receiving the sound pressure difference signal so as to respond that the difference value between the highest value and the lowest value of the sound intensity is greater than a preset sound pressure difference value and output a debugging prompting signal.
Through adopting above-mentioned technical scheme, when the highest value and the lowest value difference of check point sound intensity are greater than preset sound pressure difference, it is improper to explain the installation setting position of speaker, need set up the position to the installation of speaker and debug, and relatively suggestion module output debugging cue signal suggestion staff debugs the installation setting position of speaker, and the staff need not observe the sound pressure difference signal all the time, has further made things convenient for public address system's installation debugging process.
Further, the comparison prompt module comprises:
the comparison unit is coupled with the signal processing module and used for receiving the sound pressure difference signal so as to respond that the difference value between the highest value and the lowest value of the sound intensity is larger than a preset sound pressure difference value and output a comparison signal;
and the prompt unit is coupled with the comparison unit and used for receiving the comparison signal so as to respond to the comparison signal and output the debugging prompt signal.
Further, the comparison unit includes:
a sound pressure difference value reference unit for outputting a sound pressure difference value preset signal in response to the preset sound pressure difference value;
and the comparator is coupled with the sound pressure difference value reference unit and the signal processing module, receives the sound pressure difference value preset signal and the sound pressure difference value signal and responds to the magnitude relation between the sound pressure difference value signal and the preset signal to output the comparison signal.
Further, the sound pressure difference value reference unit comprises a fixed resistor and a potentiometer which are connected in series with a power supply, and a node where the fixed resistor and the potentiometer are coupled outputs the sound pressure difference value preset signal.
Further, the prompting unit includes:
the switch isolation unit is coupled with the comparison unit, receives the comparison signal and outputs a switch isolation signal in response to the comparison signal;
and the indicating unit is coupled with the switch isolation unit and used for receiving the switch isolation signal so as to respond to the switch isolation signal and output the debugging prompt signal.
Further, the switch isolation unit comprises a switch tube and a relay which are connected in series with a power supply, a trigger end of the switch tube is coupled with the comparison unit to receive the comparison signal so as to be switched on in response to the comparison signal, the relay comprises a normally open contact, and the switch isolation signal represents the closing of the normally open contact.
Furthermore, the indicating unit comprises a self-flickering light emitting diode and a current limiting resistor which are connected with the normally open contact of the relay in series to a power supply, and the debugging prompting signal shows that the self-flickering light emitting diode flickers and emits light.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the sound intensity acquisition unit can acquire the sound intensity of a plurality of detection points in the application occasion of the sound amplification system, the signal processing module can output the sound intensity difference value of the highest value and the lowest value of the sound intensity of the plurality of detection points, and a worker can install and debug the sound amplification system according to the sound intensity difference value of the highest value and the lowest value;
2. when the difference between the highest value and the lowest value of the sound intensity collected by the sound intensity collecting unit is greater than the preset sound pressure difference, the comparison prompting module outputs a prompting signal to prompt a worker to adjust the sound amplification system, and the installation and debugging process of the sound amplification system is further facilitated.
Drawings
FIG. 1 is a schematic diagram of the application principle of the present invention;
fig. 2 is a schematic structural diagram of a system according to a first embodiment of the present invention;
fig. 3 is a schematic circuit structure diagram of a comparison prompt module according to the second embodiment of the present invention.
In the figure, 1, auditorium; 2. a standard four hundred meter runway; 3. a chairman table; 4. a speaker; 5. a sound intensity acquisition unit; 6. a signal processing module; 7. a comparison prompt module; 71. a comparison unit; 711. a sound pressure difference reference unit; 72. a presentation unit; 721. a switch isolation unit; 722. and an indication unit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1 and 2, a public address system installation and debugging system comprises a plurality of sound intensity acquisition units 5 used for acquiring sound intensities of a plurality of detection points in an application occasion of the public address system and a signal processing module 6 used for outputting difference values of the highest value and the lowest value of the sound intensities, and workers can install and debug the public address system according to the detected highest value and the detected lowest value of the sound intensities, so that the public address system can enable different positions of an auditorium to hear audio signals with proper sizes at the same time.
The sound amplifying system includes a speaker 4, and in the present embodiment, the speaker 4 is configured as a linear array sound, and the sound amplifying system of a single sound source can reduce multiple ghosts of the respective unsynchronized direct sound images caused by the path difference between the multiple sound sources from reaching the ears of the listener, and the reflected sound and reverberant sound generated by surrounding buildings and the like can also be mixed with the multiple ghosts to reach the ears of the listener, resulting in cloudiness of the sound.
Taking a conventional stadium as an example, the whole stadium is rectangular, the middle part of the stadium is a standard four-hundred-meter runway 2, auditoriums 1 are arranged around the runway, the middle point of the long edge of the stadium is a chairman platform 3, and a loudspeaker 4 is arranged near the chairman platform 3 and faces the standard four-hundred-meter runway 2.
The sound intensity collection unit 5 is provided as a sound level meter. The sound level meters of the installation and debugging system are arranged at a plurality of detection points of the auditorium 1 in the stadium, and when the loudspeaker 4 produces sound, the sound level meters can detect the sound intensity of the detection points and output sound pressure detection signals responding to the sound intensity. The sound pressure detection signal is output in the form of a decibel value.
The signal processing module 6 is coupled to the sound intensity collecting unit 5, and receives the sound pressure detection signal to output a sound pressure difference signal in response to a difference between a highest value and a lowest value of the detected sound intensity. The signal processing module 6 includes a signal processing unit that performs signal processing of the signal processing module 6 and a display unit that can display the sound pressure difference signal.
In this embodiment, the signal processing unit is configured as an FPGA programmable controller, and a calculation program is provided in the FPGA programmable controller, specifically, a plurality of input pins of the FPGA programmable controller correspondingly receive the sound pressure detection signal, and if the input pipe access signal set is U, the processing program in the FPGA programmable controller outputs "Umax-Umin" as a sound pressure difference signal, and since the sound pressure detection signals are decibel values, the difference between the highest sound pressure and the lowest sound pressure is also a decibel value. The modes of editing and solving the maximum value and the minimum value of a plurality of numerical values and the difference between the two numerical values by adopting the FPGA programmable controller are conventional applications of the FPGA programmable controller, and the improvement of a program is not involved.
The display unit sets up to LCD liquid crystal display, and the display unit can show the decibel numerical value of sound pressure difference to make whether the staff can audio-visually judge the sound pressure difference signal in the within range that allows, can know according to the experience of technical personnel in the field, it is comparatively reasonable that the sound pressure difference is not more than 8 decibels, of course, also can judge the allowed range of sound pressure difference signal according to concrete application needs.
Furthermore, the installation and debugging system also comprises a wireless receiver and a plurality of wireless transmitters, and the wireless transmitters and the wireless receiver are used for realizing the wireless communication connection between the sound intensity acquisition unit 5 and the signal processing module 6, so that the relative positions of the sound intensity acquisition unit 5 and the signal processing unit are more flexible. The number of the wireless transmitters is consistent with the number of the sound intensity acquisition signals and is correspondingly coupled with the sound intensity acquisition signals. In the practical application process, each wireless transmitter is internally provided with a fixed code, so that the wireless receiver can distinguish the sound pressure intensity signals from different wireless transmitters, the wireless receiver is coupled with the signal processing unit, and the wireless receiver can transmit the sound pressure intensity signals to the signal receiving unit after receiving the sound pressure intensity signals, so that the wireless communication connection between the sound intensity acquisition unit 5 and the signal processing module 6 can be realized.
The wireless communication connection of sound intensity collection unit 5 and signal processing module 6 makes the relative position of sound intensity collection unit 5 and signal processing module 6 more nimble, in the use, signal processing module 6 generally sets up in speaker 4 position, so that the staff adjusts the position of speaker 4 according to the sound pressure difference signal while observing the sound pressure difference signal, the position of sound intensity collection unit 5 is nimble relatively, can set up in audience's 1 arbitrary position, the position of check point is nimble relatively promptly, thereby made things convenient for and carried out the sound intensity detection of different positions to different forms's place, and it is comparatively convenient.
The implementation principle of the embodiment is as follows: when the position of the loudspeaker 4 of the sound amplifying system is set, a worker firstly installs the loudspeaker 4 at a designated position according to experience, then the sound intensity acquisition unit 5 is arranged at a plurality of detection points of the application occasion of the sound amplifying system, the signal processing module 6 is arranged near the designated position so as to be convenient for the worker to observe, the worker starts the loudspeaker 4 to make the loudspeaker 4 sound, the sound intensity acquisition unit 5 acquires the sound intensity of the detection points, the signal processing module 6 displays the difference value between the highest sound pressure and the lowest sound pressure, the worker judges whether the installation position and the mode of the loudspeaker 4 need to be adjusted according to the difference value between the highest sound pressure and the lowest sound pressure and the application occasion of the sound amplifying system and the experience of the worker, namely, the situation that the difference of the sizes of audio signals heard by listeners at different positions of the auditorium of the application occasion of, and then realized public address system speaker 4 and made the different positions of auditorium hear the audio signal that the size is suitable simultaneously, and the process of setting up installation and debugging system and according to installation and debugging system installation and debugging speaker 4 is comparatively convenient.
Example two:
referring to fig. 2 and 3, the present embodiment is different from the first embodiment in that:
the installation and debugging system also comprises a coupling signal processing module 6 and a comparison prompting module 7 which receives the sound pressure difference signal and outputs a debugging prompting signal in response to the fact that the difference value of the highest value and the lowest value of the sound intensity is larger than the preset sound pressure difference value.
The comparison prompt module 7 includes a comparison unit 71 and a prompt unit 72.
The comparing unit 71 is coupled to the signal processing module 6, receives the sound pressure difference signal, and outputs a comparison signal in response to that the difference between the highest value and the lowest value of the sound intensity is greater than a preset sound pressure difference. The comparison unit 71 includes a sound pressure difference reference unit 711 and a comparator N1, the sound pressure difference reference unit 711 includes a fixed resistor R1 and a potentiometer R2 connected in series to the power supply, the fixed resistor R1 is disposed near the positive electrode of the power supply, a node coupled between the fixed resistor R1 and the potentiometer R2 outputs a sound pressure difference preset signal in response to the preset sound pressure difference, and the size of the sound pressure difference preset signal can be changed by adjusting the size of the potentiometer R2, so that the comparison prompt module 7 can be adapted to different sound pressure difference requirements of the installation and debugging system. The non-inverting input terminal of the comparator N1 is coupled to the signal processing module 6, and receives the sound pressure difference signal, the inverting input terminal thereof is coupled to the sound pressure difference reference unit 711, and receives the sound pressure difference preset signal, and when the difference between the highest value and the lowest value of the sound intensity is greater than the preset sound pressure difference, the sound pressure difference signal is greater than the sound pressure difference preset signal, and the output terminal of the comparator N1 outputs a high-level comparison signal.
In the above process, for the setting of the sound pressure difference preset signal, the sound pressure difference signal belonging to the specified size and generated by the FPGA programmable controller of the editing signal processing module 6 may be adopted to adjust the resistance value of the potentiometer R2, which belongs to the conventional technical means of the skilled person and does not belong to the technical means of the present solution, and therefore, no specific description is provided herein.
The presentation unit 72 includes a switch isolation unit 721 and an indication unit 722.
The switch isolation unit 721 is coupled to the comparing unit 71, and receives the comparison signal to output a switch isolation signal in response to the comparison signal. The switch isolation unit 721 comprises a switch tube connected in series to a power supply and a relay KM1, in this embodiment, the switch tube is configured as an NPN transistor Q1, a base of the transistor Q1 is coupled to the comparing unit 71 and receives the comparison signal, an emitter is coupled to a negative electrode of the power supply, a collector is coupled to one end of a coil of the relay KM1, the other end of the coil of the relay KM1 is coupled to a negative electrode of the power supply, the relay KM1 comprises a normally open contact KM1-1, and the switch isolation signal represents the closing of the normally open contact KM1-1 of the relay KM 1. When the switch isolation unit 721 receives the high-level comparison signal, the transistor Q1 is turned on to energize the coil of the relay KM1, and the normally open contact KM1-1 of the relay KM1 is closed, that is, the switch isolation unit 721 outputs the switch isolation signal.
The indicating unit 722 in this embodiment includes a self-flashing led D1 and a current limiting resistor R3, wherein the self-flashing led D1 is connected in series with the normally open contact KM1-1 and the current limiting resistor R3 of the relay KM1 to a power supply. Specifically, the positive electrode of the power supply is coupled with one end of the normally open contact KM1-1 of the relay KM1, the other end of the normally open contact KM1-1 of the relay KM1 is coupled with the anode of the self-flickering light-emitting diode D1, and the cathode of the self-flickering light-emitting diode D1 is coupled with the negative electrode of the power supply through a current-limiting resistor R3. When the normally open contact KM1-1 of the relay KM1 is closed, namely the indicating unit 722 receives the switch isolation signal, the self-flashing light-emitting diode D1 emits light, namely the indicating unit 722 outputs a debugging prompt signal, and prompts a worker that the loudspeaker 4 of the public address system needs to change the installation mode or debug. Thereby further facilitating the installation and debugging process of the loudspeaker 4 of the public address system.
It can be understood, during specific application, relatively, suggestion module 7 and signal processing module 6 are integrated to set up to same device body, and relatively, the setting up of suggestion module 7 makes the staff need not watch the sound pressure difference value signal that the display element shows always after setting up the sound pressure difference value and predetermine the signal, and the scintillation that from scintillation emitting diode D1 can be more audio-visual suggestion staff public address system's speaker 4 setting mode improper to the process of staff's installation debugging public address system speaker 4 has further been made things convenient for.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a public address system installation debugging system which characterized by includes:
a plurality of sound intensity collecting units (5) respectively used for collecting the sound intensity of a plurality of detection points in the application occasion of the public address system so as to output a sound pressure detection signal responding to the sound intensity;
a signal processing module (6), coupled to the sound intensity acquisition unit (5), receiving the sound intensity signal to output a sound pressure difference signal responsive to a difference between a highest value and a lowest value of the sound intensity.
2. The system for installing and debugging the sound amplification system as claimed in claim 1, wherein the sound intensity acquisition unit (5) is in wireless communication connection with the signal processing module (6).
3. A loudspeaker system setup debugging system according to claim 1, wherein said signal processing module (6) comprises:
the signal processing unit is coupled with the sound intensity acquisition unit (5) and used for receiving the sound intensity signal and responding to the highest value and the lowest value of the sound intensity signal to output the sound pressure difference signal;
and the display unit is coupled with the signal processing unit and used for receiving and displaying the sound pressure difference signal.
4. A sound amplifying system mounting and debugging system as set forth in any one of claims 1-3, further comprising:
and the comparison prompting module (7) is coupled with the signal processing module (6) and receives the sound pressure difference signal so as to respond that the difference value between the highest value and the lowest value of the sound intensity is greater than a preset sound pressure difference value and output a debugging prompting signal.
5. A loudspeaker system installation and debugging system according to claim 4, wherein said comparison prompt module (7) comprises:
a comparing unit (71), coupled to the signal processing module (6), for receiving the sound pressure difference signal and outputting a comparison signal in response to that a difference between a highest value and a lowest value of the sound intensity is greater than a preset sound pressure difference;
a prompt unit (72), coupled to the comparison unit (71), receiving the comparison signal to output the debug prompt signal in response to the comparison signal.
6. A loudspeaker system setup system according to claim 5, wherein the comparing unit (71) comprises:
a sound pressure difference value reference unit (711) for outputting a sound pressure difference value preset signal in response to the preset sound pressure difference value;
and the comparator is coupled with the sound pressure difference value reference unit (711) and the signal processing module (6), receives the sound pressure difference value preset signal and the sound pressure difference value signal and responds to the magnitude relation between the sound pressure difference value signal and the preset signal to output the comparison signal.
7. The system as claimed in claim 6, wherein the sound pressure difference reference unit (711) comprises a fixed resistor and a potentiometer connected in series to a power supply, and a node coupled to the fixed resistor and the potentiometer outputs the sound pressure difference preset signal.
8. An audio amplification system setup system according to claim 5, wherein the cue unit (72) comprises:
a switch isolation unit (721), coupled to the comparison unit (71), receiving the comparison signal to output a switch isolation signal in response to the comparison signal;
an indication unit (722), coupled to the switch isolation unit (721), receives the switch isolation signal to output the debug prompt signal in response to the switch isolation signal.
9. The system of claim 8, wherein the switch isolation unit (721) comprises a switch tube and a relay connected in series to a power supply, an active end of the switch tube is coupled to the comparison unit (71) to receive the comparison signal and conduct in response to the comparison signal, the relay comprises a normally open contact, and the switch isolation signal represents the closing of the normally open contact.
10. The system as claimed in claim 9, wherein the indication unit (722) is configured as a self-flashing led and a current limiting resistor connected in series with the normally open contact of the relay to a power supply, and the debugging prompt signal is represented by the flashing light of the self-flashing led.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114630246A (en) * | 2020-12-10 | 2022-06-14 | 比亚迪股份有限公司 | Sound adjusting device, method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114630246A (en) * | 2020-12-10 | 2022-06-14 | 比亚迪股份有限公司 | Sound adjusting device, method and system |
| CN114630246B (en) * | 2020-12-10 | 2023-08-08 | 比亚迪股份有限公司 | Sound adjusting device, method and system |
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