Amplification module device for anti-noise automatic telephone

Abstract

The utility model discloses an amplification module device used for an anti-noise automatic telephone set, comprising an external installation housing, the edge of one side of the external installation housing is provided with a connection clamping groove, and a connection clamping strip is clamped in the connection clamping groove. When the noise suppression circuit is in operation, the self-adaptive filtering unit on the noise suppression circuit automatically adjusts parameters of a filter according to characteristics of input signals through a self-adaptive algorithm, and dynamically suppresses noise signals, so that voice signals and the noise signals are effectively separated, and the purity of the voice signals is improved; the low-noise operational amplifiers on the pre-amplification circuit and the main amplification circuit have the characteristics of low noise and high gain, noise introduced by the low-noise operational amplifiers can be reduced as much as possible while a voice signal is amplified, the quality of the amplified voice signal is ensured, the anti-noise amplification processing of the device on an automatic telephone signal is further improved, and the service life of the device is prolonged. And the communication quality is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic telephone module structure technical field, concretely is a kind of amplification module device for anti-noise automatic telephone. BACKGROUND

[0002] Automatic telephone is a kind of telephone with automatic dialing function, it can establish the talk connection with the opposite party by the telephone number input by user, without manual switching, greatly improve communication efficiency, automatic telephone is often equipped with amplification module device, for optimizing communication quality, however, there are still some defects in the actual use of automatic telephone amplification module device.

[0003] Automatic telephone amplification module device can only realize the simple amplification function of voice signal, it generally cannot effectively separate voice signal and noise signal, which leads to low purity of voice signal, and, this kind of module device is installed inside the shell of automatic telephone, which leads to the need for user to power off and shut down and disassemble the automatic telephone every time maintenance, maintenance operation is more cumbersome, therefore, we propose a new amplification module device for anti-noise automatic telephone. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of amplification module device for anti-noise automatic telephone to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of amplification module device for anti-noise automatic telephone, including outer casing, the edge of the one side of outer casing is provided with connecting slot, connecting slot is connected with connecting card strip in the inside, the one side of connecting card strip is sequentially fixed with rubber sealing pad and telephone use embedded card plate, telephone use embedded card plate is connected with telephone hot plug connector, the inside of outer casing is fixed with signal processing circuit board, connecting wire is provided between signal processing circuit board and telephone hot plug connector, audio input interface, preamplifier circuit, noise suppression circuit, main amplifier circuit and audio output interface are sequentially installed on signal processing circuit board, low noise operational amplifier is provided on preamplifier circuit and main amplifier circuit, adaptive filter unit is provided on noise suppression circuit.

[0006] Preferably, the one side of outer casing is uniformly provided with heat dissipation fin arranged at equal intervals, the material of heat dissipation fin is aluminum alloy, so that the heat dissipation performance of outer casing outer wall is improved.

[0007] Preferably, the top and bottom of both ends of outer casing are provided with ventilation groove.

[0008] Preferably, the inside of the ventilation groove is provided with a stainless steel filter screen.

[0009] Preferably, one end of the ventilation groove is movably connected with a labyrinth dustproof air-permeable cover through a damping rotating shaft, and the labyrinth dustproof air-permeable cover is uniformly provided with magnetic adsorption pieces matched with the ventilation groove.

[0010] Preferably, the labyrinth dustproof air-permeable cover is uniformly provided with air-permeable labyrinth grooves, so that the labyrinth dustproof air-permeable cover realizes the air-permeable and dustproof performance.

[0011] Preferably, the connecting clamping strip and the connecting clamping groove are both provided with a magnetic rubber layer, so that the firmness of the clamping is improved.

[0012] Preferably, the top and the bottom of the outer casing are both provided with locking pieces, and the locking pieces are provided with screws.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] (1), the amplification module device for the anti-noise automatic telephone machine passes through installing low noise operational amplifier etc., so that the device optimizes the performance of the device, through the integration of the audio input interface, the preamplifier circuit, the noise suppression circuit, the main amplifier circuit and the audio output interface on the signal processing circuit board, the audio input interface is used for connecting the microphone of the automatic telephone machine, receives the voice signal collected by the microphone, and the preamplifier circuit is used for the preliminary amplification of the input voice signal, then the noise suppression circuit is used for identifying and suppressing noise signals, then the main amplifier circuit is used for amplifying the voice signal after noise suppression processing, finally the audio output interface of the earpiece of the telephone machine is used for outputting the amplified voice signal to the earpiece, in addition, the adaptive filter unit on the noise suppression circuit automatically adjusts the parameters of the filter according to the characteristics of the input signal through the adaptive algorithm, and dynamically suppresses the noise signal, so as to effectively separate the voice signal and the noise signal, improve the purity of the voice signal, and the low noise operational amplifier on the preamplifier circuit and the main amplifier circuit has the characteristics of low noise and high gain, can reduce the noise introduced by itself as much as possible when amplifying the voice signal, and ensure the quality of the amplified voice signal, thereby improving the anti-noise amplification processing of the device for the automatic telephone machine signal and optimizing the communication quality.

[0015] (2), the amplification module device for anti-noise automatic telephone is through setting up the hot plug connector and so on for telephone, so that the device is used, through the outer wall of one end of automatic telephone installs the external casing of integrated amplification module assembly, and the telephone is set on the external casing with the telephone with the embedded card and the telephone with the hot plug connector that matches the automatic telephone, can realize the hot plug type disassembly of device and automatic telephone, further convenient independent maintenance or replacement of device, flexible high, and, through the connecting card slot and connecting card strip that are used for clamping assembly between the external casing and the telephone with the embedded card, and cooperate with the locking piece that is used for installation with the automatic telephone and is provided with screw at the edge of the external casing, this makes the device realize the advantage of split type, convenient for maintenance of internal components;

[0016] (3), the amplification module device for anti-noise automatic telephone is through installing the heat dissipation fin, so that the device optimizes the structure of itself, on the one hand, the heat dissipation fin is arranged in equal intervals on the outer side of the external casing, the heat dissipation area of the external casing is increased, and the heat dissipation performance is improved, on the other hand, the ventilation groove is movably connected with the labyrinth dustproof ventilation cover and is arranged at the top and the bottom of both ends of the external casing, the double-layer ventilation structure formed by the stainless steel filter screen on the ventilation groove and the air passage winding labyrinth groove on the labyrinth dustproof ventilation cover, so that the external casing realizes better ventilation and heat dissipation effect, and the dustproof performance is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the front view structural diagram of the utility model and automatic telephone in the assembled state.

[0018] Figure 2 It is the side view structural diagram of the utility model in the split state.

[0019] Figure 3 It is the rear view partial section structural diagram of the external casing of the utility model.

[0020] Figure 4 It is the side view structural diagram of the utility model in the split state.

[0021] Figure 5 It is the rear view structural diagram of the signal processing circuit board of the utility model.

[0022] In the figure: 1, locking piece; 2, heat dissipation fin; 3, outer shell; 4, connecting card strip; 5, rubber sealing pad; 6, telephone embedded card plate; 7, telephone hot plug connector; 8, connecting wire; 9, labyrinth dustproof ventilation cover; 10, connecting card slot; 11, signal processing circuit board; 12, ventilation groove; 13, stainless steel filter screen; 14, magnetic adsorption piece; 15, audio input interface; 16, preamplifier circuit; 17, noise suppression circuit; 18, main amplifier circuit; 19, audio output interface; 20, low-noise operational amplifier; 21, adaptive filter unit. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-5 The utility model provides an embodiment: a kind of amplification module device for anti-noise automatic telephone, including outer shell 3, the edge of one side of outer shell 3 is provided with connecting card slot 10, connecting card slot 10 is clamped with connecting card strip 4 inside, the side of connecting card strip 4 is sequentially fixed with rubber sealing pad 5 and telephone embedded card plate 6, telephone embedded card plate 6 is connected with telephone hot plug connector 7;

[0025] The top and bottom of outer shell 3 are provided with locking piece 1, and the locking piece 1 is provided with a screw;

[0026] Connecting card strip 4 is rectangular frame, and magnetic rubber layer is arranged on connecting card strip 4 and connecting card slot 10, so that the fastening performance of connecting card strip 4 and connecting card slot 10 is improved when clamped;

[0027] The inside of outer shell 3 is fixed with signal processing circuit board 11, and connecting wire 8 is arranged between signal processing circuit board 11 and telephone hot plug connector 7;

[0028] When used, the outer shell 3 with the internal integrated amplification module assembly is installed on the outer wall of one end of the automatic telephone, and the telephone embedded card plate 6 and the telephone hot plug connector 7 matched with the automatic telephone are arranged on the outer shell 3, so that the hot plug disassembly of the device and the automatic telephone is realized, and then the independent maintenance or replacement of the device is facilitated, which is flexible and high, and the connecting card slot 10 and the connecting card strip 4 for clamping assembly are arranged between the outer shell 3 and the telephone embedded card plate 6, and the locking piece 1 with a screw for installation with the automatic telephone is arranged at the edge of the outer shell 3, so that the device realizes the advantages of split type and facilitates the maintenance of the internal components.

[0029] The signal processing circuit board 11 is sequentially provided with an audio input interface 15, a pre-amplification circuit 16, a noise suppression circuit 17, a main amplification circuit 18 and an audio output interface 19, the pre-amplification circuit 16 and the main amplification circuit 18 are both provided with a low-noise operational amplifier 20, and the noise suppression circuit 17 is provided with an adaptive filter unit 21;

[0030] In use, the audio input interface 15 is used to connect the microphone of the automatic telephone set to receive the voice signal collected by the microphone, the pre-amplification circuit 16 is used to preliminarily amplify the input voice signal, the noise signal is identified and suppressed by the noise suppression circuit 17, the voice signal after the noise suppression processing is amplified again by the main amplification circuit 18, and finally the amplified voice signal is output to the earpiece through the audio output interface 19 connected to the earpiece of the telephone set, in addition, the adaptive filter unit 21 on the noise suppression circuit 17 automatically adjusts the parameters of the filter according to the characteristics of the input signal through the adaptive algorithm to dynamically suppress the noise signal, thereby effectively separating the voice signal and the noise signal and improving the purity of the voice signal, furthermore, the low-noise operational amplifier 20 on the pre-amplification circuit 16 and the main amplification circuit 18 has the characteristics of low noise and high gain, which can reduce the noise introduced by itself as much as possible while amplifying the voice signal, thereby ensuring the quality of the amplified voice signal and improving the anti-noise amplification processing of the device for the automatic telephone set signal and optimizing the communication quality.

[0031] The outer shell 3 is uniformly provided with heat dissipation fins 2 arranged at equal intervals on one side, and the heat dissipation fins 2 are made of aluminum alloy, which increases the heat conduction area of the outer wall of the outer shell 3 and improves the heat conduction and dissipation performance;

[0032] The top and bottom of both ends of the outer shell 3 are provided with ventilation grooves 12;

[0033] The ventilation grooves 12 are provided with stainless steel filter screens 13 inside;

[0034] One end of the ventilation grooves 12 is movably connected with a labyrinth dustproof ventilation cover 9 through a damping rotating shaft, and the labyrinth dustproof ventilation cover 9 is uniformly provided with magnetic adsorption pieces 14 matched with the ventilation grooves 12;

[0035] The labyrinth dustproof ventilation cover 9 is uniformly provided with a curved labyrinth groove for ventilation, so that the labyrinth dustproof ventilation cover 9 realizes the performance of ventilation and dust prevention;

[0036] When in use, on one hand, the heat dissipation fins 2 arranged at equal intervals on the outer side of the outer casing 3 increase the heat conduction area of the outer casing 3 and improve the heat conduction and heat dissipation performance, and on the other hand, the ventilation grooves 12 movably connected with the labyrinth dustproof ventilation covers 9 are arranged at the top and bottom of the two ends of the outer casing 3, the double-layer ventilation structure composed of the stainless steel filter screen 13 on the ventilation groove 12 and the air passage winding labyrinth groove on the labyrinth dustproof ventilation cover 9, so that the outer casing 3 can achieve better ventilation and heat dissipation effect while ensuring the dustproof performance.

[0037] The application embodiment in use: first, by installing the internal integrated amplification module assembly on the outer wall of the automatic telephone set, and setting the telephone embedded card plate 6 and the telephone hot plug connector 7 matched with the automatic telephone set on the outer shell 3, the hot plug disassembly of the device and the automatic telephone set can be realized, and the independent maintenance or replacement of the device is facilitated, and the device has the advantages of split type, and the internal components are convenient to maintain. In actual operation, the signal processing circuit board 11 is integrated with the audio input interface 15, the preamplifier circuit 16, the noise suppression circuit 17, the main amplifier circuit 18 and the audio output interface 19. The audio input interface 15 is used to connect the microphone of the automatic telephone set and receive the voice signal collected by the microphone. The preamplifier circuit 16 is used to preliminarily amplify the input voice signal. The noise suppression circuit 17 identifies and suppresses the noise signal. The main amplifier circuit 18 amplifies the voice signal processed by the noise suppression circuit 18. The audio output interface 19 connected with the earpiece of the telephone outputs the amplified voice signal to the earpiece. The adaptive filter unit 21 on the noise suppression circuit 17 automatically adjusts the parameters of the filter according to the characteristics of the input signal by using the adaptive algorithm, dynamically suppresses the noise signal, effectively separates the voice signal and the noise signal, and improves the purity of the voice signal. The low-noise operational amplifier 20 on the preamplifier circuit 16 and the main amplifier circuit 18 has the characteristics of low noise and high gain, can reduce the noise introduced by itself as much as possible while amplifying the voice signal, ensures the quality of the amplified voice signal, and improves the anti-noise amplification processing of the device for the automatic telephone set signal and optimizes the communication quality. In addition, on the one hand, the heat dissipation fins 2 are evenly arranged on the outer side of the outer shell 3, which increases the heat conduction area of the outer shell 3 and improves the heat conduction and heat dissipation performance. On the other hand, the ventilation grooves 12 movably connected with the labyrinth dustproof ventilation cover 9 are arranged on the top and bottom of the outer shell 3, and the double ventilation structure composed of the stainless steel filter screen 13 on the ventilation groove 12 and the air bending labyrinth groove on the labyrinth dustproof ventilation cover 9 ensures the dustproof performance while realizing good ventilation and heat dissipation effect.

Claims

1. An amplification module device for use in a noise immune automatic telephone set, characterized by, The utility model provides an external shell (3), the edge of one side of external shell (3) is provided with connecting card slot (10), the inside of connecting card slot (10) is clamped with connecting card strip (4), the one side of connecting card strip (4) is fixed with rubber sealing gasket (5) and telephone embedded card plate (6) in proper order, telephone embedded card plate (6) is connected with telephone hot plug connector (7), the inside of external shell (3) is fixed with signal processing circuit board (11), connecting lead (8) is arranged between signal processing circuit board (11) and telephone hot plug connector (7), signal processing circuit board (11) is installed with audio input interface (15), preamplifier circuit (16), noise suppression circuit (17), main amplifier circuit (18) and audio output interface (19) in proper order, and low noise operational amplifier (20) is arranged on preamplifier circuit (16) and main amplifier circuit (18), and adaptive filter unit (21) is arranged on noise suppression circuit (17).

2. An amplification module for a noise immune autodialer according to claim 1, wherein: The external shell (3) is uniformly provided with the heat dissipation fins (2) arranged at equal intervals on one side.

3. An amplification module for a noise immune autodialer according to claim 1, wherein: The top and bottom of both ends of the external shell (3) are provided with ventilation grooves (12).

4. An amplification module for a noise immune autodialer according to claim 3, wherein: The inside of the ventilation grooves (12) is provided with a stainless steel filter screen (13).

5. An amplification module for a noise immune autodialer according to claim 3, wherein: One end of the ventilation grooves (12) is movably connected with a labyrinth dustproof ventilation cover (9) through a damping pivot, and the labyrinth dustproof ventilation cover (9) is uniformly provided with magnetic adsorption pieces (14) matched with the ventilation grooves (12).

6. An amplification module for a noise immune autodialer according to claim 5, wherein: The labyrinth dustproof ventilation cover (9) is uniformly provided with air passage zigzag labyrinths.

7. An amplification module for a noise immune autodialer according to claim 1, wherein: The connecting card strip (4) is in the shape of a rectangular frame, and the connecting card strip (4) and the connecting card slot (10) are both provided with a magnetic rubber layer.

8. An amplification module for a noise immune autodialer according to claim 1, wherein: The top and bottom of the external shell (3) are both provided with locking pieces (1), and the locking pieces (1) are provided with screws.

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