CN117412198A - PTT dynamic characteristic signal change detection circuit, device, equipment and system - Google Patents
PTT dynamic characteristic signal change detection circuit, device, equipment and system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
- H04Q5/245—Circuit arrangements in which for one subscriber low frequency speech and/or signalling signals proceed on the line, while for the other subscriber the low frequency speech and/or signalling signals are modulated upon a high frequency carrier signal
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Abstract
The invention relates to the technical field of interphone converged communication, in particular to a PTT dynamic characteristic signal change detection circuit, a PTT dynamic characteristic signal change detection device, PTT dynamic characteristic signal change detection equipment and PTT dynamic characteristic signal change detection system, wherein the PTT dynamic characteristic signal change detection circuit, PTT dynamic characteristic signal change detection equipment and PTT dynamic characteristic signal change detection system comprise: the signal acquisition detection sub-circuit is used for acquiring incoming signals of the interphone earphone interface module of the interphone fusion communication gateway in real time and extracting dynamic characteristic signals of the incoming signals; a signal processing sub-circuit for processing the dynamic characteristic signal; the PTT high-low level conversion output sub-circuit is used for comparing the dynamic characteristic signal processed by the signal processing sub-circuit with a preset reference signal to generate a PTT high-low level signal; and the A/D conversion sub-circuit is used for acquiring PTT high-low level signals, converting the PTT high-low level signals into digital signals and transmitting the digital signals to the interphone fusion communication gateway. The invention can synchronously output the corresponding high or low level signal when the calling party presses the PTT key of the interphone so as to pull up or end the call of the converged communication equipment.
Description
Technical Field
The invention relates to the technical field of interphone convergence communication, in particular to a PTT dynamic characteristic signal change detection circuit, a PTT dynamic characteristic signal change detection device, a PTT dynamic characteristic signal change detection equipment and a PTT dynamic characteristic signal change detection system.
Background
Currently, in the field of interphone convergence communication, there are two ways to determine whether a PTT (it should be noted that PTT is a key manner in a communication system, and is used for sending and receiving control signals) is pressed:
1. key tone mode: the talk is turned on and off by detecting a PTT key depression and release of the headset interface. However, this approach has the following drawbacks: A. sometimes, whether the PTT key is pressed or released cannot be accurately judged, so that a call is not successfully completed or the conversation is ended. B. Different PTT key sounds are used by different brands or models of interphones, so that the key sounds of each brand model must be collected and stored first to achieve compatibility. Doing so increases the response time of the system because the program needs to perform a screening comparison of multiple key sounds.
2. The audio signal judging mode comprises the following steps: whether the PTT is pressed or released is judged by detecting whether the audio signal output exists in the earphone interface of the interphone. However, this approach has the following drawbacks: A. the volume of the call is required to reach a certain level to correctly detect the PTT state. B. Is easily affected by interference signals, and causes false triggering. C. When a longer pause occurs in the call, the call is interrupted.
Disclosure of Invention
In order to solve the problems, the invention provides a PTT dynamic characteristic signal change detection circuit, a device, equipment and a system, which can synchronously output corresponding high or low level signals when a calling party presses a PTT key of an interphone through a signal acquisition detection sub-circuit, a signal processing sub-circuit, a PTT high-low level conversion output sub-circuit and an A/D conversion sub-circuit so as to pull up or end APP conversation of a converged communication device and converged interphone conversation; even if the PTT key is pressed but the speech is not speaking, the speaking pause is longer or the sound is smaller, the communication interruption or the disconnection phenomenon can not occur; in addition, the anti-interference device has good anti-interference performance, and the problem of false triggering caused by interference is avoided. The method can ensure that the PTT high-low level signal can be accurately detected and output under the interference environment, and ensure the normal use of the interphone fusion communication.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a PTT dynamic characteristic signal change detection circuit, comprising:
the signal acquisition detection sub-circuit is used for acquiring incoming signals of an interphone earphone interface module of the interphone fusion communication gateway in real time and extracting dynamic characteristic signals of the incoming signals;
a signal processing sub-circuit for processing the dynamic characteristic signal;
the PTT high-low level conversion output sub-circuit is used for comparing the dynamic characteristic signal processed by the signal processing sub-circuit with a preset reference signal to obtain a comparison result; generating PTT high-low level signals based on the comparison result;
and the A/D conversion sub-circuit is used for acquiring the PTT high-low level signals, converting the PTT high-low level signals into digital signals, and transmitting the digital signals to a main control module of the interphone fusion communication gateway.
Further, the intercom earphone interface module comprises a microphone and loudspeaker matching unit and a PTT control unit, wherein the microphone and loudspeaker matching unit is connected with the PTT control unit and the signal acquisition detection sub-circuit, and the PTT control unit is connected with a main control module of the intercom converged communication gateway.
Further, the processing the dynamic characteristic signal includes:
amplifying the dynamic characteristic signal;
and shaping the amplified dynamic characteristic signal.
Further, the signal processing sub-circuit includes: the signal amplifying unit is connected with the signal shaping unit and the signal acquisition and detection sub-circuit, and the signal shaping unit is connected with the PTT high-low level conversion output sub-circuit;
the signal amplifying unit is used for amplifying the dynamic characteristic signal;
and the signal shaping unit is used for shaping the amplified dynamic characteristic signal.
Further, the PTT high-low level shift output sub-circuit includes: the reference comparison unit is connected with the signal shaping unit and the high-low level generation unit, and the high-low level generation unit is connected with the A/D conversion sub-circuit;
the reference comparison unit is used for comparing the dynamic characteristic signal processed by the signal processing sub-circuit with a preset reference signal to obtain a comparison result;
the high-low level generating unit is used for generating PTT high-low level signals based on the comparison result.
Further, the extracting the dynamic characteristic signal of the incoming signal specifically includes:
and carrying out signal separation on the audio signals in the incoming signals to obtain the dynamic characteristic signals.
A PTT dynamic characteristic signal change detection device comprising a PTT dynamic characteristic signal change detection circuit as described above.
A PTT dynamic characteristic signal change detection apparatus comprising a PTT dynamic characteristic signal change detection circuit as described above.
A PTT dynamic characteristic signal change detection system comprising a PTT dynamic characteristic signal change detection device as described above.
Further, the PTT dynamic characteristic signal change detection system also comprises an interphone, and the interphone is connected with the PTT dynamic characteristic signal change detection equipment.
The invention has the beneficial effects that:
the invention can collect the incoming signal of the interphone earphone interface module in real time through the signal collecting and detecting sub-circuit and extract the dynamic characteristic signal of the incoming signal. The dynamic characteristic signal is processed by the signal processing sub-circuit, and operations such as filtering, amplifying, denoising, shaping and the like can be included. And comparing the processed dynamic characteristic signal with a preset reference signal through a PTT high-low level conversion output sub-circuit to obtain a comparison result, and generating a PTT high-low level signal based on the comparison result. And the PTT high-low level signal is obtained through the A/D conversion sub-circuit and converted into a digital signal, and then the digital signal is transmitted to the master control module for the interphone fusion communication. Therefore, the PTT dynamic characteristic signal change detection circuit can collect the incoming signal of the interphone earphone interface module, extract the dynamic characteristic signal and further convert the dynamic characteristic signal into a PTT signal with high and low levels. Thus, when the calling party presses the PTT key of the interphone, the circuit can synchronously output corresponding high or low level signals so as to pull up or end the APP call of the converged communication equipment and the converged interphone call. Even in the case where the PTT key is pressed without speaking, the speaking pause is long, or the sound is small, no communication interruption or disconnection occurs. In addition, the circuit has good anti-interference performance, and the problem of false triggering caused by interference is avoided. The method can ensure that the PTT high-low level signal can be accurately detected and output under the interference environment, and ensure the normal use of the interphone fusion communication.
Drawings
Fig. 1 is a schematic diagram of a PTT dynamic characteristic signal change detection circuit of the present invention.
Detailed Description
Referring to fig. 1, the present invention provides a PTT dynamic characteristic signal change detection circuit, apparatus, device and system, which can synchronously output a corresponding high or low level signal when a caller presses a PTT key of an intercom, so as to pull up or end an APP call of a converged communication device and a converged intercom call. Even in the case where the PTT key is pressed without speaking, the speaking pause is long, or the sound is small, no communication interruption or disconnection occurs. In addition, the invention has good anti-interference performance, and the problem of false triggering caused by interference is avoided. The method can ensure that the PTT high-low level signal can be accurately detected and output under the interference environment, and ensure the normal use of the interphone fusion communication.
It should be noted that the PTT key, i.e., push-To-Talk key (key), is a key used in voice communication To control when a microphone is turned on or off. Using the PTT key, the user can choose to press the key to speak and stop speaking when the key is released in order to effectively manage and regulate voice communications. Such keys are often found in scenes where real-time voice communication is required, such as interphones, online games, voice chat software, and the like. Through the PTT key, the user can avoid noise and interference caused by long-time starting of the microphone, and can operate only when speaking is needed, thereby improving the quality and efficiency of voice communication.
The embodiment 1 of the invention provides a PTT dynamic characteristic signal change detection circuit, which is arranged on an interphone fusion communication gateway and comprises:
the signal acquisition detection sub-circuit is used for acquiring incoming signals of an interphone earphone interface module of the interphone fusion communication gateway in real time and extracting dynamic characteristic signals of the incoming signals; further, the extracting the dynamic characteristic signal of the incoming signal specifically includes: and carrying out signal separation on the audio signals in the incoming signals to obtain the dynamic characteristic signals. It should be noted that, the signals transmitted by the earphone wire of the interphone have audio signals and other various dynamic signals, and the circuit is responsible for isolating the audio signals and separating out other useful dynamic signals, including digital dynamic signals and analog dynamic signals; in other words, the invention does not need to judge whether the PTT is pressed by an audio signal, has obvious difference from the traditional technology of judging whether the PTT is pressed by a key sound mode and an audio signal judgment mode, and can avoid the defects of the traditional technology;
a signal processing sub-circuit for processing the dynamic characteristic signal; further, the processing the dynamic characteristic signal includes: amplifying the dynamic characteristic signal; shaping the amplified dynamic characteristic signal;
the PTT high-low level conversion output sub-circuit is used for comparing the dynamic characteristic signal processed by the signal processing sub-circuit with a preset reference signal to obtain a comparison result; generating PTT high-low level signals based on the comparison result;
the A/D conversion sub-circuit is used for acquiring the PTT high-low level signals, converting the PTT high-low level signals into digital signals, and transmitting the digital signals to a main control module of the interphone convergence communication gateway, wherein after the main control module of the interphone convergence communication gateway receives the digital signals, signaling is immediately sent to pull up or end APP call of convergence communication and convergence interphone call;
the signal acquisition detection sub-circuit is connected with the A/D conversion sub-circuit through the signal processing sub-circuit and the PTT high-low level conversion output sub-circuit in sequence.
In the scheme, the signal acquisition detection sub-circuit can acquire the incoming signal of the interphone earphone interface module in real time and extract the dynamic characteristic signal of the incoming signal. The dynamic characteristic signal is processed by the signal processing sub-circuit, and operations such as filtering, amplifying, denoising, shaping and the like can be included. And comparing the processed dynamic characteristic signal with a preset reference signal through a PTT high-low level conversion output sub-circuit to obtain a comparison result, and generating a PTT high-low level signal based on the comparison result. And the PTT high-low level signal is obtained through the A/D conversion sub-circuit and converted into a digital signal, and then the digital signal is transmitted to the master control module for the interphone fusion communication. Therefore, the PTT dynamic characteristic signal change detection circuit can collect the incoming signal of the interphone earphone interface module, extract the dynamic characteristic signal and further convert the dynamic characteristic signal into a PTT signal with high and low levels. Thus, when the calling party presses the PTT key of the interphone (non-voice trigger), the circuit can synchronously output corresponding high or low level signals so as to pull up or end the APP call of the converged communication equipment and the converged interphone call. Even in the case where the PTT key is pressed without speaking, the speaking pause is long, or the sound is small, no communication interruption or disconnection occurs. In addition, the circuit has good anti-interference performance, and the problem of false triggering caused by interference is avoided. The method can ensure that the PTT high-low level signal can be accurately detected and output under the interference environment, and ensure the normal use of the interphone fusion communication.
Further, the interphone earphone interface module comprises a microphone and loudspeaker matching unit and a PTT control unit, wherein the microphone and loudspeaker matching unit is connected with the PTT control unit and a signal acquisition detection sub-circuit, and the PTT control unit is connected with a main control module of the interphone converged communication gateway.
In this embodiment, the microphone and speaker matching unit can provide audio input and output functions of the intercom earphone interface, receive sound input of the user through the microphone, and output to the user through the speaker. The PTT control unit realizes the key control function of the external interphone, in other words, the master control module of the interphone converged communication gateway pulls up or ends the APP call and the converged interphone call of the converged communication through the PTT control unit. The PTT control unit is connected with the interphone converged communication master control module, so that the interphone and other communication equipment can be converged and communicated, and interconnection and intercommunication among different equipment (for example, interphones of different types) are realized. In a word, the intercom earphone interface module can provide high-quality audio input and output functions, a convenient key control function and the capability of converged communication with other communication equipment, so that the use experience and the communication effect of the intercom are improved.
Further, the signal processing sub-circuit includes: the signal amplifying unit is connected with the signal shaping unit and the signal acquisition and detection sub-circuit, and the signal shaping unit is connected with the PTT high-low level conversion output sub-circuit;
the signal amplifying unit is used for amplifying the dynamic characteristic signal;
and the signal shaping unit is used for shaping the amplified dynamic characteristic signal.
Further, the PTT high-low level shift output sub-circuit includes: the reference comparison unit is connected with the signal shaping unit and the high-low level generation unit, and the high-low level generation unit is connected with the A/D conversion sub-circuit;
the reference comparison unit is used for comparing the dynamic characteristic signal processed by the signal processing sub-circuit with a preset reference signal to obtain a comparison result;
the high-low level generating unit is used for generating PTT high-low level signals based on the comparison result.
In the above scheme, the signal amplifying unit is configured to amplify the input dynamic characteristic signal to increase the amplitude of the signal. The signal shaping unit is used for shaping the amplified signal so as to meet specific requirements or standards. In this sub-circuit, the signal amplifying unit is connected to the signal shaping unit, and the amplified signal is transferred to the signal shaping unit for further processing. In addition, by connecting the PTT high-low level conversion output sub-circuit, the shaped signal can be converted into a high-low level signal for output. In summary, the signal processing sub-circuit realizes amplification and shaping processing of dynamic characteristic signals through the signal amplifying unit and the signal shaping unit, and realizes output control of signals through connection with the PTT high-low level conversion output sub-circuit; this will improve the reliability and stability of the signal transmission.
Embodiment 2 of the present invention provides a PTT dynamic characteristic signal variation detecting device comprising the PTT dynamic characteristic signal variation detecting circuit described in embodiment 1.
Embodiment 3 of the present invention provides a PTT dynamic characteristic signal variation detecting apparatus comprising the PTT dynamic characteristic signal variation detecting circuit described in embodiment 1.
Embodiment 4 of the present invention provides a PTT dynamic characteristic signal variation detection system comprising the PTT dynamic characteristic signal variation detection apparatus described in embodiment 1.
Further, the PTT dynamic characteristic signal change detection system also comprises an interphone, and the interphone is connected with the PTT dynamic characteristic signal change detection equipment.
In summary, the beneficial effects of embodiments 1 to 4 of the present invention are at least as follows:
1. the signal acquisition detection sub-circuit can acquire the incoming signal of the interphone earphone interface module in real time and extract the dynamic characteristic signal of the incoming signal. The dynamic characteristic signal is processed by the signal processing sub-circuit, and operations such as filtering, amplifying, denoising, shaping and the like can be included. And comparing the processed dynamic characteristic signal with a preset reference signal through a PTT high-low level conversion output sub-circuit to obtain a comparison result, and generating a PTT high-low level signal based on the comparison result. And the PTT high-low level signal is obtained through the A/D conversion sub-circuit and converted into a digital signal, and then the digital signal is transmitted to the master control module for the interphone fusion communication. Therefore, the PTT dynamic characteristic signal change detection circuit can collect the incoming signal of the interphone earphone interface module, extract the dynamic characteristic signal and further convert the dynamic characteristic signal into a PTT signal with high and low levels. Thus, when the calling party presses the PTT key of the interphone, the circuit can synchronously output corresponding high or low level signals so as to pull up or end the APP call of the converged communication equipment and the converged interphone call. Even in the case where the PTT key is pressed without speaking, the speaking pause is long, or the sound is small, no communication interruption or disconnection occurs. In addition, the circuit has good anti-interference performance, and the problem of false triggering caused by interference is avoided. The method can ensure that the PTT high-low level signal can be accurately detected and output under the interference environment, and ensure the normal use of the interphone fusion communication.
2. The microphone and speaker matching unit can provide audio input and output functions of the intercom earphone interface, receives sound input of a user through the microphone, and outputs the sound input to the user through the speaker. The PTT control unit realizes the key control function of the external interphone, in other words, the master control module of the interphone converged communication gateway pulls up or ends the APP call and the converged interphone call of the converged communication through the PTT control unit. The PTT control unit is connected with the interphone converged communication master control module, so that the interphone and other communication equipment can be converged and communicated, and interconnection and intercommunication among different equipment (for example, interphones of different types) are realized. In a word, the intercom earphone interface module can provide high-quality audio input and output functions, a convenient key control function and the capability of converged communication with other communication equipment, so that the use experience and the communication effect of the intercom are improved.
3. The signal amplifying unit is used for amplifying the input dynamic characteristic signal to increase the amplitude of the signal. The signal shaping unit is used for shaping the amplified signal so as to meet specific requirements or standards. In this sub-circuit, the signal amplifying unit is connected to the signal shaping unit, and the amplified signal is transferred to the signal shaping unit for further processing. In addition, by connecting the PTT high-low level conversion output sub-circuit, the shaped signal can be converted into a high-low level signal for output. In summary, the signal processing sub-circuit realizes amplification and shaping processing of dynamic characteristic signals through the signal amplifying unit and the signal shaping unit, and realizes output control of signals through connection with the PTT high-low level conversion output sub-circuit; this will improve the reliability and stability of the signal transmission.
The above embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (10)
1. A PTT dynamic characteristic signal change detection circuit, comprising:
the signal acquisition detection sub-circuit is used for acquiring incoming signals of an interphone earphone interface module of the interphone fusion communication gateway in real time and extracting dynamic characteristic signals of the incoming signals;
a signal processing sub-circuit for processing the dynamic characteristic signal;
the PTT high-low level conversion output sub-circuit is used for comparing the dynamic characteristic signal processed by the signal processing sub-circuit with a preset reference signal to obtain a comparison result; generating PTT high-low level signals based on the comparison result;
and the A/D conversion sub-circuit is used for acquiring the PTT high-low level signals, converting the PTT high-low level signals into digital signals, and transmitting the digital signals to a main control module of the interphone fusion communication gateway.
2. The PTT dynamic characteristic signal change detection circuit of claim 1, wherein the intercom headset interface module comprises a microphone and speaker matching unit, a PTT control unit, the microphone and speaker matching unit being connected with the PTT control unit, a signal acquisition detection subcircuit, the PTT control unit being connected with a master control module of an intercom converged communication gateway.
3. The PTT dynamic characteristic signal change detection circuit of claim 1, wherein the processing the dynamic characteristic signal comprises:
amplifying the dynamic characteristic signal;
and shaping the amplified dynamic characteristic signal.
4. The PTT dynamic characteristic signal change detection circuit of claim 3 wherein the signal processing sub-circuit comprises: the signal amplifying unit is connected with the signal shaping unit and the signal acquisition and detection sub-circuit, and the signal shaping unit is connected with the PTT high-low level conversion output sub-circuit;
the signal amplifying unit is used for amplifying the dynamic characteristic signal;
and the signal shaping unit is used for shaping the amplified dynamic characteristic signal.
5. The PTT dynamic characteristic signal change detection circuit of claim 4, wherein the PTT high-low level shift output sub-circuit comprises: the reference comparison unit is connected with the signal shaping unit and the high-low level generation unit, and the high-low level generation unit is connected with the A/D conversion sub-circuit;
the reference comparison unit is used for comparing the dynamic characteristic signal processed by the signal processing sub-circuit with a preset reference signal to obtain a comparison result;
the high-low level generating unit is used for generating PTT high-low level signals based on the comparison result.
6. The PTT dynamic characteristic signal change detection circuit of claim 1, wherein the extracting the dynamic characteristic signal of the incoming signal is specifically:
and carrying out signal separation on the audio signals in the incoming signals to obtain the dynamic characteristic signals.
7. A PTT dynamic characteristic signal change detection apparatus, characterized in that the PTT dynamic characteristic signal change detection apparatus comprises a PTT dynamic characteristic signal change detection circuit according to any one of claims 1-6.
8. A PTT dynamic characteristic signal change detection apparatus, characterized in that the PTT dynamic characteristic signal change detection apparatus comprises the PTT dynamic characteristic signal change detection circuit according to any one of claims 1 to 6.
9. A PTT dynamic characteristic signal change detection system, characterized in that the PTT dynamic characteristic signal change detection system comprises the PTT dynamic characteristic signal change detection device of claim 8.
10. The PTT dynamic characteristic signal change detection system of claim 9, further comprising an intercom connected to the PTT dynamic characteristic signal change detection device.
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| CN102881287A (en) * | 2012-09-20 | 2013-01-16 | 熊猫电子集团有限公司 | Voice triggering method and circuit |
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| CN203661142U (en) * | 2013-12-31 | 2014-06-18 | 北京圣非凡电子系统技术开发有限公司 | Hand-free anti-noise interphone |
| CN215222249U (en) * | 2021-06-23 | 2021-12-17 | 力声通信股份有限公司 | Multimode intelligent interphone |
| US20230319516A1 (en) * | 2022-03-31 | 2023-10-05 | Zebra Technologies Corporation | Adaptive Push to Talk Switch Detection |
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- 2023-10-19 CN CN202311355231.XA patent/CN117412198B/en active Active
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|---|---|---|---|---|
| CN102881287A (en) * | 2012-09-20 | 2013-01-16 | 熊猫电子集团有限公司 | Voice triggering method and circuit |
| CN103491487A (en) * | 2013-09-17 | 2014-01-01 | 深圳市其力昌科技发展有限公司 | Frequency modulation anti-interference hidden earphone system |
| CN203661142U (en) * | 2013-12-31 | 2014-06-18 | 北京圣非凡电子系统技术开发有限公司 | Hand-free anti-noise interphone |
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| US20230319516A1 (en) * | 2022-03-31 | 2023-10-05 | Zebra Technologies Corporation | Adaptive Push to Talk Switch Detection |
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