CN210405649U - Audio output on-line monitoring device for loudspeaker box - Google Patents
Audio output on-line monitoring device for loudspeaker box Download PDFInfo
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- CN210405649U CN210405649U CN201921951903.2U CN201921951903U CN210405649U CN 210405649 U CN210405649 U CN 210405649U CN 201921951903 U CN201921951903 U CN 201921951903U CN 210405649 U CN210405649 U CN 210405649U
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Abstract
The utility model relates to an audio output on-line monitoring device of audio amplifier belongs to mining audio amplifier technical field. The circuit comprises a comparator circuit, a delay trigger and a main control chip; the comparator circuit is connected with the analog audio signal of the loudspeaker of the sound box and outputs a monitoring signal for comparing the analog audio signal; the delay trigger receives the monitoring signal to make judgment and outputs a delay time signal; the main control chip collects the delay time signal sent by the delay trigger to judge whether the audio output of the sound box is good or bad, and outputs the result to the alarm monitoring device. The utility model has the advantages that: whether the audio is output or not is monitored on line, and when the loudspeaker box fails and audio is not output, the audio can be effectively displayed in a corresponding state on a broadcasting software interface, so that the audio is simpler, more convenient and more effective.
Description
Technical Field
The utility model relates to an audio output on-line monitoring device of audio amplifier belongs to mining audio amplifier technical field.
Background
At present, broadcast sound boxes of most manufacturers are all local area network links of a TCP/IP protocol, and main component equipment comprises the sound boxes, a switch, a scheduling terminal, server software and the like. The working principle is that sound is converted into an audio electrical signal through a microphone, and the audio electrical signal is amplified and mediated and is restored into an audio electrical signal to be sent into a loudspeaker voice coil.
The prior art has the defects that: the loudspeaker box is used as a broadcasting terminal, the work of the loudspeaker box is critical in the safety production process, at most, a plurality of manufacturers can only detect that the terminal is online or offline, the audio output cannot be detected, and a maintainer can often patrol, so that the problems of high cost investment, untimely reaction, inconvenient use and the like exist, and certain potential safety hazards exist in the safety production of a coal mine to a certain extent.
Disclosure of Invention
In order to overcome the shortcoming of the prior art, the utility model provides an audio output on-line monitoring device of audio amplifier through whether there is output on-line monitoring to the audio frequency, when the audio amplifier breaks down and does not have audio output, can effectually present with corresponding state on the broadcast software interface.
The utility model discloses a realize through following technical scheme: the utility model provides a audio output on-line monitoring device of audio amplifier which characterized in that: the circuit comprises a comparator circuit, a delay trigger and a main control chip;
the comparator circuit is connected with the analog audio signal of the loudspeaker of the sound box and outputs a monitoring signal for comparing the analog audio signal;
the delay trigger receives the monitoring signal to make judgment and outputs a delay time signal;
the main control chip collects the delay time signal sent by the delay trigger to judge whether the audio output of the sound box is good or bad, and outputs the result to the alarm monitoring device.
The comparator circuit uses an IC chip with a comparator function to collect analog audio signals.
The IC chip with the comparator function is an LM393 double-voltage comparator integrated circuit.
Preferably, the output load resistor of the LM393 dual voltage comparator integrated circuit contains 2 comparators, pin 1 is the comparator output, pins 2 and 3 are the comparator input, pin 8 is the power supply pin, and pin 4 is ground;
when the "+" input signal level is higher than the "-" input signal level is high at the output terminal,
when the level of the + input signal is lower than that of the-input signal, the output end is at low level;
YP _ IN is that analog audio signal is connected to pin 3 of LM393 double voltage comparator integrated circuit, after voltage comparison with pin 2, pin 1 of LM393 double voltage comparator integrated circuit is connected with delay trigger to output SS signal value to the delay trigger.
Preferably, the delay trigger is an NE555 chip, a pin 1 of the NE555 chip is ground, a pin 2 is a trigger input end connected with the comparator, a pin 3 is an output end, an output level state is controlled by the trigger, the trigger is controlled by a pin 6 of the upper comparator and a pin 2 of the lower comparator, when the delay trigger receives a high level input by the upper comparator, the trigger is placed in a reset state, and the pin 3 outputs a low level; pins 2 and 6 are complementary, pin 2 only acts on low level, high level does not act on it, namely voltage is less than 1Ucc/3, pin 3 outputs high level, pin 6 is threshold end, only acts on high level, low level does not act on it, namely input voltage is greater than 2Ucc/3, pin 2 must be greater than 1Ucc/3, pin 3 outputs low level; the 4 pins are reset terminals, and when the potential of the 4 pins is less than 0.4V, the 3 pins of the output terminal output low level regardless of the states of the 2 pins and the 6 pins.
Preferably, at the 2-pin trigger end of the delay trigger, the trigger comparator is in a monostable state, and the delay signal SS is sent to the main control chip for processing, so as to determine whether the audio is output or not.
Preferably, the main control chip is connected with the mining integrated gateway, and the result is output to the alarm monitoring device through the mining integrated gateway.
Preferably, the main control chip is connected with a ground monitoring center through a comprehensive gateway to report the audio output state of the sound box, and the audio output state of the sound box is displayed on a broadcast software interface in real time.
Preferably, the alarm monitoring device judges where the audio output of the sound box fails according to the network address of the main control chip.
The utility model has the advantages that: whether the audio is output or not is monitored on line, and when the loudspeaker box fails and audio is not output, the audio can be effectively displayed in a corresponding state on a broadcasting software interface, so that the audio is simpler, more convenient and more effective.
Drawings
The invention will be further explained below with reference to the drawings and examples.
FIG. 1 is a block diagram illustrating the structure of the present invention;
fig. 2 is a schematic circuit diagram of the present invention.
Detailed Description
As shown in fig. 1 and fig. 2, the on-line monitoring device for audio output of a sound box is implemented by the waveform high and low levels of audio signals output to a speaker, and is characterized in that: the circuit comprises a comparator circuit, a delay trigger and a main control chip;
the comparator circuit is connected with the analog audio signal of the loudspeaker of the sound box and outputs a monitoring signal for comparing the analog audio signal;
the delay trigger receives the monitoring signal to make judgment and outputs a delay time signal;
the main control chip collects the delay time signal sent by the delay trigger to judge whether the audio output of the sound box is good or bad, and outputs the result to the alarm monitoring device.
The comparator circuit uses an IC chip with a comparator function to collect analog audio signals.
The output load resistor can be connected to any power supply voltage within the allowable power supply voltage range and is not limited by the voltage value of Vcc, the output can be used as a simple SPS open circuit to ground (when no load resistor is used), the sink current of the output part is limited by the β value of the available drive sum device, when the limit current (16 mA) is reached, the output transistor will be withdrawn and the output voltage will rise quickly.
Preferably, the output load resistor of the LM393 dual voltage comparator integrated circuit contains 2 comparators, pin 1 is the comparator output, pins 2 and 3 are the comparator input, pin 8 is the power supply pin, and pin 4 is ground;
when the "+" input signal level is higher than the "-" input signal level is high at the output terminal,
when the level of the + input signal is lower than that of the-input signal, the output end is at low level;
YP _ IN is that analog audio signal is connected to pin 3 of LM393 double voltage comparator integrated circuit, after voltage comparison with pin 2, pin 1 of LM393 double voltage comparator integrated circuit is connected with delay trigger to output SS signal value to the delay trigger.
Preferably, the delay trigger is an NE555 chip, a pin 1 of the NE555 chip is ground, a pin 2 is a trigger input end connected with the comparator, a pin 3 is an output end, an output level state is controlled by the trigger, the trigger is controlled by a pin 6 of the upper comparator and a pin 2 of the lower comparator, when the delay trigger receives a high level input by the upper comparator, the trigger is placed in a reset state, and the pin 3 outputs a low level; pins 2 and 6 are complementary, pin 2 only acts on low level, high level does not act on it, namely voltage is less than 1Ucc/3, pin 3 outputs high level, pin 6 is threshold end, only acts on high level, low level does not act on it, namely input voltage is greater than 2Ucc/3, pin 2 must be greater than 1Ucc/3, pin 3 outputs low level; the 4 pins are reset terminals, and when the potential of the 4 pins is less than 0.4V, the 3 pins of the output terminal output low level regardless of the states of the 2 pins and the 6 pins. The 555 integrated circuit is used as a timer at first, so the 555 integrated circuit is called a 555 timer or a 555 time-base circuit, but later developed, the 555 integrated circuit can be used for timing delay control, and can also be used for various controls such as dimming, temperature regulation, voltage regulation, speed regulation and the like and metering detection; in addition, the circuit can be formed into pulse oscillation, monostable, bistable and pulse modulation circuits, and can be used for alternating current signal source, power supply conversion, frequency conversion, pulse modulation and the like. Because it is reliable, easy to use, cheap, is used in various electronic products extensively at present, 555 integrated circuit have dozens of components and parts inside, have voltage divider, comparator, basic R-S flip-flop, discharge tube and snubber, etc., the circuit is relatively complicated, it is the mixture of analog circuit and digital circuit.
Preferably, at the 2-pin trigger end of the delay trigger, the trigger comparator is in a monostable state, and the delay signal SS is sent to the main control chip for processing, so as to determine whether the audio is output or not.
Preferably, the main control chip is connected with the mining integrated gateway, and the result is output to the alarm monitoring device through the mining integrated gateway.
Preferably, the main control chip is connected with a ground monitoring center through a comprehensive gateway to report the audio output state of the sound box, and the audio output state of the sound box is displayed on a broadcast software interface in real time.
Preferably, the alarm monitoring device judges where the audio output of the sound box fails according to the network address of the main control chip.
Claims (6)
1. The utility model provides a audio output on-line monitoring device of audio amplifier which characterized in that: the circuit comprises a comparator circuit, a delay trigger and a main control chip;
the comparator circuit is connected with the analog audio signal of the loudspeaker of the sound box and outputs a monitoring signal for comparing the analog audio signal;
the delay trigger receives the monitoring signal to make judgment and outputs a delay time signal;
the main control chip collects the delay time signal sent by the delay trigger to judge whether the audio output of the sound box is good or bad, and outputs the result to the alarm monitoring device.
2. The audio output on-line monitoring device for the sound box according to claim 1, wherein: the comparator circuit uses an IC chip with a comparator function to collect analog audio signals.
3. The audio output on-line monitoring device for the sound box according to claim 2, wherein: the IC chip with the comparator function is an LM393 double-voltage comparator integrated circuit.
4. The audio output on-line monitoring device for the sound box according to claim 1, wherein: the master control chip is connected with the mining integrated gateway, and the result is output to the alarm monitoring device through the mining integrated gateway.
5. The audio output on-line monitoring device for the sound box according to claim 4, wherein: the main control chip is connected with a ground monitoring center through a comprehensive gateway to report the audio output state of the sound box, and the audio output state of the sound box is displayed on a broadcast software interface in real time.
6. The audio output on-line monitoring device for the sound box according to claim 4, wherein: the alarm monitoring device judges where the audio output of the sound box fails according to the network address of the main control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921951903.2U CN210405649U (en) | 2019-11-13 | 2019-11-13 | Audio output on-line monitoring device for loudspeaker box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921951903.2U CN210405649U (en) | 2019-11-13 | 2019-11-13 | Audio output on-line monitoring device for loudspeaker box |
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| Publication Number | Publication Date |
|---|---|
| CN210405649U true CN210405649U (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921951903.2U Active CN210405649U (en) | 2019-11-13 | 2019-11-13 | Audio output on-line monitoring device for loudspeaker box |
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| Country | Link |
|---|---|
| CN (1) | CN210405649U (en) |
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2019
- 2019-11-13 CN CN201921951903.2U patent/CN210405649U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An on line monitoring device for sound box audio output Effective date of registration: 20200810 Granted publication date: 20200424 Pledgee: Xuzhou Huaichang Investment Co.,Ltd. Pledgor: Xuzhou Zhongkuang Yunhuo Information Technology Co.,Ltd. Registration number: Y2020980004796 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221118 Granted publication date: 20200424 Pledgee: Xuzhou Huaichang Investment Co.,Ltd. Pledgor: Xuzhou Zhongkuang Yunhuo Information Technology Co.,Ltd. Registration number: Y2020980004796 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |