Broadcast telephone equipment and system

Abstract

The utility model discloses a broadcast telephone device and system, and the device comprises a housing, a key matrix, a receiver handle, a control module, a trigger module, a magnetic attraction switch module, an electrical isolation module, a sound collection module, and an audio module. The control module, the trigger module, the electrical isolation module and the POE network module are arranged in the shell; the surface of the shell is provided with a key matrix, a magnetic attraction switch module and a receiver handle; the electrical isolation module is connected to the control module, a first end of the electrical isolation module is connected to the key matrix, a second end of the electrical isolation module is connected to a first end of the sound acquisition module, and a second end of the sound acquisition module is connected to the receiver handle; and the trigger module, the magnetic switch module and the audio module are respectively connected to the control module. The equipment can effectively improve the anti-knock performance and the scene environment application range of public broadcast telephone equipment. The utility model relates to the technical field of public broadcasting.

Description

Technical Field

[0001] This utility model relates to the field of public broadcasting technology, and in particular to a broadcast telephone device and system. Background Technology

[0002] In modern society, public address telephone equipment is a common communication device widely used in various public places (such as shopping malls, schools, airports, train stations, etc.), and is often used to play background music and broadcast announcements.

[0003] Currently, from an explosion-proof perspective, although existing public address telephone equipment uses special materials and structures as the outer shell to give it a certain explosion-proof function, this method still poses a certain risk of explosion in extreme environments, its explosion-proof performance is insufficient, and its application range in various environments is relatively limited.

[0004] Therefore, the problems existing in the current technology still need to be solved and optimized. Utility Model Content

[0005] The purpose of this utility model is to solve, to a certain extent, the technical problems existing in the related technologies.

[0006] Therefore, one objective of this utility model is to provide a public address telephone device and system, wherein the device can effectively improve the explosion-proof performance and application range of public address telephone devices in various scenarios.

[0007] To achieve the above-mentioned technical objectives, this utility model provides a broadcast telephone device, including a housing, a keypad matrix, a handset, a control module, a trigger module, a magnetic switch module, an electrical isolation module, a sound acquisition module, an audio module, and a PoE network module;

[0008] The control module, the trigger module, the electrical isolation module, and the PoE network module are disposed inside the housing; the key matrix, the magnetic switch module, and the handset handle are mounted on the surface of the housing.

[0009] The electrical isolation module is connected to the control module, the first end of the electrical isolation module is connected to the key matrix, the second end of the electrical isolation module is connected to the first end of the sound acquisition module, and the second end of the sound acquisition module is connected to the earpiece handle.

[0010] The trigger module, the magnetic switch module, and the audio module are respectively connected to the control module, and the PoE network module is used to supply power to the control module, the trigger module, the magnetic switch module, and the audio module.

[0011] In addition, a broadcast telephone device according to an embodiment of the present invention may also have the following additional technical features:

[0012] Optionally, in one embodiment of the present invention, the triggering module includes an input triggering unit and an output triggering unit;

[0013] The first end of the input trigger unit is connected to the control module, and the second end of the input trigger unit is connected to an external device;

[0014] The first end of the output trigger unit is connected to the control module, and the second end of the output trigger unit is connected to the external device.

[0015] Optionally, in one embodiment of the present invention, the input triggering unit includes a first resistor, a second resistor, and a first diode;

[0016] The first end of the first resistor is connected to the control module, the second end of the first resistor is connected to the positive terminal of the first diode, and the negative terminal of the first diode is connected to the external device.

[0017] The first end of the second resistor is connected to the positive terminal of the first diode, and the second end of the second resistor is connected to the POE network module;

[0018] The output trigger unit includes a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a second diode, a first transistor, a second transistor, a third transistor, and a relay switch;

[0019] The base of the first transistor is connected to the control module through the fourth resistor, the first end of the third resistor is connected to the fourth resistor, and the second end of the third resistor is grounded.

[0020] The collector of the first transistor is connected to the POE network module through the sixth resistor, the emitter of the first transistor is connected to the base of the second transistor, the emitter of the first transistor is connected to the first end of the fifth resistor, and the second end of the fifth resistor is grounded.

[0021] The emitter of the second transistor is connected to the emitter of the third transistor, the collector of the second transistor is connected to the first terminal of the relay switch, and the collector of the second transistor is connected to the second terminal of the relay switch through the second diode;

[0022] The first terminal of the fifth resistor is connected to the base of the third transistor, and the collector of the third transistor is connected to the collector of the second transistor; the third terminal of the relay switch is connected to the external device.

[0023] Optionally, in one embodiment of the present invention, the magnetic switch module includes a seventh resistor, an eighth resistor, a third diode, and a magnetic sensor;

[0024] The first end of the seventh resistor is connected to the control module, the second end of the seventh resistor is connected to the positive terminal of the third diode, and the negative terminal of the third diode is connected to the magnetic sensor.

[0025] The first end of the eighth resistor is connected to the positive terminal of the third diode, and the second end of the eighth resistor is grounded.

[0026] Optionally, in one embodiment of the present invention, the audio module includes a decoding unit, a power amplifier unit, and a loudspeaker;

[0027] The first end of the decoding unit is connected to the control module, the second end of the decoding unit is connected to the first end of the power amplifier unit, and the second end of the power amplifier unit is connected to the loudspeaker.

[0028] Optionally, in one embodiment of the present invention, the audio module further includes a broadcast amplification unit and a broadcast loudspeaker;

[0029] The first end of the broadcast amplification unit is connected to the third end of the decoding unit, the second end of the broadcast amplification unit is connected to the broadcast loudspeaker, and the third end of the broadcast amplification unit is connected to the earpiece handle.

[0030] Optionally, in one embodiment of the present invention, the broadcast amplification unit includes an operational amplifier subunit and a power amplifier subunit;

[0031] The first terminal of the operational amplifier subunit is connected to the third terminal of the decoding unit, the second terminal of the operational amplifier subunit is connected to the first terminal of the power amplifier subunit, and the second terminal of the power amplifier subunit is connected to the broadcast loudspeaker.

[0032] Optionally, in one embodiment of the present invention, the device further includes a voltage conversion module, the input of which is connected to the PoE network module.

[0033] Optionally, in one embodiment of the present invention, the electrical isolation module includes a key isolation unit and a handset / phone handle isolation unit;

[0034] The first end of the button isolation unit is connected to the control module, and the second end of the button isolation unit is connected to the button matrix;

[0035] The first end of the earpiece isolation unit is connected to the control module, and the second end of the earpiece isolation unit is connected to the first end of the sound acquisition module.

[0036] On the other hand, this utility model embodiment also provides a broadcast telephone system, including a broadcast service platform and a plurality of broadcast telephone devices as described above, wherein all the broadcast telephone devices and the broadcast service platform are communicatively connected.

[0037] The advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention:

[0038] This application discloses a broadcast telephone device and system, wherein the broadcast telephone device includes a housing, a keypad matrix, a handset, a control module, a trigger module, a magnetic switch module, an electrical isolation module, a sound acquisition module, an audio module, and a PoE network module; the control module, the trigger module, the electrical isolation module, and the PoE network module are disposed inside the housing; the keypad matrix, the magnetic switch module, and the handset are mounted on the surface of the housing; the electrical isolation module is connected to the control module, a first end of the electrical isolation module is connected to the keypad matrix, a second end of the electrical isolation module is connected to a first end of the sound acquisition module, and a second end of the sound acquisition module is connected to the handset; the trigger module, the magnetic switch module, and the audio module are respectively connected to the control module, and the PoE network module is used to supply power to the control module, the trigger module, the magnetic switch module, and the audio module. The device is directly connected to the keypad matrix via an electrical isolation module and indirectly connected to the handset via a sound acquisition module through the same electrical isolation module. It also uses a magnetic switch module as the handset's operating switch. This allows the device to control the energy output to the outside world from the two electrically exposed parts of the public address telephone device: the keys and the handset. This effectively reduces the possibility of flammable gases being ignited, lowers the risk of explosion in extreme environments, and improves explosion resistance and the range of applications in different environments. Attached Figure Description

[0039] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0040] Figure 1 A schematic diagram of the frame of a broadcast telephone device provided in one embodiment of the present invention;

[0041] Figure 2 A simplified structural diagram of a broadcast telephone device provided as an embodiment of this utility model;

[0042] Figure 3A circuit diagram of a key matrix is ​​provided as an embodiment of this utility model;

[0043] Figure 4 A circuit diagram of a control module provided in one embodiment of this utility model;

[0044] Figure 5 A circuit diagram of a sound acquisition module provided in one embodiment of this utility model;

[0045] Figure 6 A circuit diagram of a trigger module provided in one embodiment of this utility model;

[0046] Figure 7 A circuit diagram of a magnetic switch module provided in one embodiment of this utility model;

[0047] Figure 8 A circuit diagram of a decoding unit provided in one embodiment of the present invention;

[0048] Figure 9 A circuit diagram of a power amplifier unit provided in one embodiment of the present invention;

[0049] Figure 10 A circuit schematic diagram of an operational amplifier subunit provided in one embodiment of this utility model;

[0050] Figure 11 A circuit diagram of a power amplifier subunit provided in one embodiment of the present invention;

[0051] Figure 12 A circuit schematic diagram of a PoE network module provided in one embodiment of this utility model;

[0052] Figure 13 This is a circuit diagram of an electrical isolation module provided as an embodiment of the present invention. Detailed Implementation

[0053] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0054] In the description of this utility model, it should be understood that the terms "length," "upper," "lower," "front," "rear," "left," "right," "top," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0055] Currently, from an explosion-proof perspective, although existing public address telephone equipment uses special materials and structures as the outer shell to give it a certain explosion-proof function, this method still poses a certain risk of explosion in extreme environments, its explosion-proof performance is insufficient, and its application range in various environments is relatively limited.

[0056] In addition, existing public address telephone equipment mainly uses analog signal transmission to achieve signal transmission with other public address telephone equipment or public address loudspeakers. However, since analog signals are easily interfered with by various noises during transmission, their communication quality is relatively low, and the signal will gradually attenuate during long-distance transmission, resulting in relatively limited sound quality and coverage of public address systems.

[0057] In view of this, the present utility model application provides a public address system (POS) telephone device. The POS telephone device is directly connected to the keypad matrix via an electrical isolation module and indirectly connected to the handset via a sound acquisition module through the same electrical isolation module. A magnetic switch module is used as the handset switch. This module can control the energy output to the outside world from the two electrically exposed parts of the public address system: the keypad and the handset. This effectively reduces the possibility of flammable gas being ignited, reduces the risk of explosion in extreme environments, and improves explosion resistance and the range of applications in different environments.

[0058] In addition, the broadcast telephone equipment also supplies power to other modules through the PoE network module, which allows the broadcast telephone equipment to work normally and also enables digital signal transmission with other public broadcast telephone equipment or public broadcast loudspeakers based on the PoE network, effectively improving the sound quality and coverage of public broadcasting.

[0059] Reference Figure 1 and Figure 2Specifically, a broadcast telephone device and system according to an embodiment of this application includes a housing, a key matrix, a handset, a control module, a trigger module, a magnetic switch module, an electrical isolation module, a sound acquisition module, an audio module, and a PoE network module;

[0060] The control module, the trigger module, the electrical isolation module, and the PoE network module are disposed inside the housing; the key matrix, the magnetic switch module, and the handset handle are mounted on the surface of the housing.

[0061] The electrical isolation module is connected to the control module, the first end of the electrical isolation module is connected to the key matrix, the second end of the electrical isolation module is connected to the first end of the sound acquisition module, and the second end of the sound acquisition module is connected to the earpiece handle.

[0062] The trigger module, the magnetic switch module, and the audio module are respectively connected to the control module, and the PoE network module is used to supply power to the control module, the trigger module, the magnetic switch module, and the audio module.

[0063] In this embodiment, the housing is used to mount a button matrix, a magnetic switch module, and a handset handle on its surface, and to mount a control module, a trigger module, an electrical isolation module, a sound acquisition module, an audio module, and a PoE network module internally. Specifically, an all-aluminum alloy can be used as the housing material, and rubber gaskets or sealant can be used at the housing seams to achieve explosion-proof, waterproof, and dustproof functions. (Refer to...) Figure 3 The key matrix is ​​used to receive key commands provided by the user and transmit the received key commands to the control module through the electrical isolation module; the handset is used to convert the received electrical signal into a sound signal that the user can hear at the handset position, and to receive the user's voice signal.

[0064] Understandably, referring to Figure 4 The control module coordinates the operation of various modules within the public address system (POS) telephone equipment. Specifically, it transmits audio signals from external devices to the audio module or handset, and processes the audio signals collected by the handset before transmitting them via PoE to other POS telephone equipment or public address speakers. This control module may include an SS202 chip. A trigger module is used to trigger the POS telephone equipment or other devices. A magnetic switch module is used to disconnect the handset from the call. An electrical isolation module controls the energy output to the outside world from the keypad matrix and handset, which are the two electrically exposed components. (See reference...) Figure 5The sound acquisition module is used to convert the user's voice signal into an electrical signal; the audio module is used for broadcasting or amplifying the microphone; the PoE network module is used to supply power to the control module, the trigger module, the magnetic switch module and the audio module, and also to receive or send audio electrical signals.

[0065] For example, the working principle of a broadcast telephone device provided in this application embodiment is as follows:

[0066] When a user inputs the target calling device via the keypad matrix and picks up the handset of the broadcast telephone, the user's voice is converted from an audio signal to an electrical signal after passing through the handset and the sound acquisition module. This electrical signal is transmitted to the control module via the electrical isolation module, and then forwarded to the PoE network module. The PoE network module transmits the electrical signal to the target calling device via Ethernet. Furthermore, when the user terminates the broadcast call and the handset approaches the housing, the magnetic switch module generates a detection signal to the control module. Upon receiving this signal, the control module disconnects the handset from the call. Compared to using mechanical buttons as the handset's on / off switch, this avoids the energy released to the outside when the handset is disconnected, effectively reducing the risk of explosion in extreme environments.

[0067] In addition, this application embodiment takes other external devices as the fire protection system platform as an example. The fire protection system platform can provide a short-circuit signal to the control module through the trigger module so that the broadcast telephone device is triggered and can start playing fire alarm voice signals; or, the broadcast telephone device can also provide a short-circuit signal to external devices (such as sound and light alarms, other broadcast telephone devices, etc.) through the trigger module to trigger the external devices to work.

[0068] It is worth mentioning that this broadcast telephone equipment does not involve any software improvements, and the software aspects can be easily derived from existing technology.

[0069] Reference Figure 6 In some embodiments, the triggering module includes an input triggering unit and an output triggering unit;

[0070] The first end of the input trigger unit is connected to the control module, and the second end of the input trigger unit is connected to an external device;

[0071] The first end of the output trigger unit is connected to the control module, and the second end of the output trigger unit is connected to the external device.

[0072] In some embodiments, the input triggering unit includes a first resistor R12, a second resistor R13, and a first diode Z1;

[0073] The first end of the first resistor R12 is connected to the control module, the second end of the first resistor R12 is connected to the positive terminal of the first diode Z1, and the negative terminal of the first diode Z1 is connected to the external device.

[0074] The first end of the second resistor R13 is connected to the positive terminal of the first diode Z1, and the second end of the second resistor R13 is connected to the POE network module;

[0075] The output trigger unit includes a third resistor R14, a fourth resistor R15, a fifth resistor R16, a sixth resistor R17, a second diode Z2, a first transistor Q1, a second transistor Q2, a third transistor Q3, and a relay switch K1;

[0076] The base of the first transistor Q1 is connected to the control module through the fourth resistor R15, the first end of the third resistor R14 is connected to the fourth resistor R15, and the second end of the third resistor R14 is grounded.

[0077] The collector of the first transistor Q1 is connected to the POE network module through the sixth resistor R17, the emitter of the first transistor Q1 is connected to the base of the second transistor, the emitter of the first transistor Q1 is connected to the first end of the fifth resistor R16, and the second end of the fifth resistor R16 is grounded.

[0078] The emitter of the second transistor Q2 is connected to the emitter of the third transistor Q3, the collector of the second transistor Q2 is connected to the first terminal of the relay switch K1, and the collector of the second transistor Q2 is connected to the second terminal of the relay switch K1 through the second diode Z2.

[0079] The first terminal of the fifth resistor R16 is connected to the base of the third transistor Q3, and the collector of the third transistor Q3 is connected to the collector of the second transistor Q2; the third terminal of the relay switch K1 is connected to the external device.

[0080] In this embodiment, a short-circuit signal provided by an external device can be received via an input trigger unit, and a short-circuit signal can be provided to an external device via an output trigger unit. Specifically, when an external device provides a short-circuit signal to the cathode of the first diode Z1 via interface CN6, the signal level output from the first terminal of the first resistor R12 changes. The control module detects the change in signal level at the first terminal of the first resistor R12 via interface CN5 and triggers the broadcast telephone device. Alternatively, when the control module provides a control signal to the base of the first transistor Q1 via interface CN5 and the fourth resistor R15, the first transistor Q1 and the second transistor Q2 are turned on in sequence, causing the switching state of the relay switch K1 to switch and generate a short-circuit signal, which is sent to the external device via interface CN6.

[0081] Reference Figure 7 In some embodiments, the magnetic switch module includes a seventh resistor R18, an eighth resistor R19, a third diode Z3, and a magnetic sensor CN7;

[0082] The first end of the seventh resistor R18 is connected to the control module, the second end of the seventh resistor R18 is connected to the positive terminal of the third diode Z3, and the negative terminal of the third diode Z3 is connected to the magnetic sensor CN7.

[0083] The first end of the eighth resistor R19 is connected to the positive terminal of the third diode Z3, and the second end of the eighth resistor R19 is grounded.

[0084] In this embodiment, the magnetic sensor CN7 is used to detect the magnetic field of the handset handle. When the handset handle is close to the magnetic sensor CN7 inside the housing, the magnetic sensor CN7 will be turned on and generate an effective detection signal. The detection signal is transmitted to the control module through the seventh resistor R18 so that the control module can hang up the handset handle after receiving the detection signal.

[0085] Reference Figure 8 and Figure 9 In some embodiments, the audio module includes a decoding unit, a power amplifier unit, and a loudspeaker;

[0086] The first end of the decoding unit is connected to the control module, the second end of the decoding unit is connected to the first end of the power amplifier unit, and the second end of the power amplifier unit is connected to the loudspeaker.

[0087] In this embodiment of the application, the audio electrical signal transmitted by the control module can be decoded by the decoding unit to obtain the decoded audio electrical signal; then the power of the decoded and audio electrical signal can be amplified by the power amplifier unit to reach a power level that can drive the loudspeaker or the handset to produce sound.

[0088] It is understood that the decoding unit in this application embodiment includes a JRC2761 chip. After the audio signal is limited by the JRC2761 chip, the decoded audio signal is input to the PAM8303 chip in the power amplifier unit by the second pin of the JRC2761 chip for power amplification, so as to obtain an audio signal sufficient to drive the loudspeaker or the handset to produce sound.

[0089] Specifically, when the user removes the handset handle from the housing, the magnetic sensor CN7 in the magnetic switch module is deactivated, causing a change in the relay switch in the power amplifier unit. The PAM8303 chip is connected to the handset handle via an auxiliary circuit. The PAM8303 chip transmits the audio signal, such as the prompt tone or intercom speech, to the handset handle after amplification. Alternatively, when the user attaches the handset handle to the housing, the magnetic sensor CN7 in the magnetic switch module is activated, causing a change in the relay switch in the power amplifier unit. The PAM8303 chip is connected to the loudspeaker via an auxiliary circuit. The PAM8303 chip transmits the audio signal, such as the prompt tone or intercom speech, to the loudspeaker after amplification.

[0090] Reference Figure 10 and Figure 11 In some embodiments, the audio module further includes a broadcast amplification unit and a broadcast loudspeaker;

[0091] The first end of the broadcast amplification unit is connected to the third end of the decoding unit, the second end of the broadcast amplification unit is connected to the broadcast loudspeaker, and the third end of the broadcast amplification unit is connected to the earpiece handle.

[0092] Furthermore, the broadcast amplification unit includes an operational amplifier subunit and a power amplifier subunit;

[0093] The first terminal of the operational amplifier subunit is connected to the third terminal of the decoding unit, the second terminal of the operational amplifier subunit is connected to the first terminal of the power amplifier subunit, and the second terminal of the power amplifier subunit is connected to the broadcast loudspeaker.

[0094] In this embodiment, the broadcast amplification unit includes an operational amplifier subunit and a power amplifier subunit. The third terminal of the decoding unit can be the ninth pin of the JRC2761 chip. Specifically, the speaker electrical signal transmitted by the decoding module is first transmitted to the decoding unit. After audio decoding by the decoding unit, the ninth pin of the JRC2761 chip outputs the decoded audio electrical signal to the operational amplifier (such as the TL082 chip) in the operational amplifier subunit for operational amplifier processing, thereby obtaining the operational amplifier-enhanced audio electrical signal. Then, the operational amplifier-enhanced audio electrical signal is input to the power amplifier subunit through the fourth pin of the TPA3116 chip for power amplification processing, thereby obtaining the audio electrical signal that is most easily able to drive the broadcast loudspeaker.

[0095] In some embodiments, the device further includes a voltage conversion module, the input of which is connected to the PoE network module.

[0096] In this embodiment, a PoE network module can be used to transmit signals to external devices while simultaneously extracting DC voltage from the PoE signal provided by the PoE network module as a power supply for the broadcast telephone equipment. Specifically, refer to... Figure 12 After the external PoE signal passes through the HX1188 chip in the PoE network module, its output can be divided into two branches. The first branch corresponds to the network signals output by the first, third, sixth, and eighth pins of the HX1188 chip. This branch is used to transmit network signals, which are the audio electrical signals transmitted by the external devices in this embodiment. The other branch corresponds to the current signals output by the tenth and fifteenth pins of the HX1188 chip. This branch is used to transmit the power supply current.

[0097] It is understood that, in this embodiment of the application, the separated DC voltage is 24V as an example. At this time, the 24V DC voltage can be converted into DC-DC to generate power supplies of 12V, 5V, 3.3V, 1.5V, 0.9V, etc. There are many specific implementation methods for voltage conversion, which will not be described in detail here.

[0098] Reference Figure 13 In some embodiments, the electrical isolation module includes a key isolation unit and a handset / phone handle isolation unit;

[0099] The first end of the button isolation unit is connected to the control module, and the second end of the button isolation unit is connected to the button matrix;

[0100] The first end of the earpiece isolation unit is connected to the control module, and the second end of the earpiece isolation unit is connected to the first end of the sound acquisition module.

[0101] In this embodiment, the electrical isolation module includes a button isolation unit and a handset isolation unit. The button isolation unit is used to control the energy output of the button matrix, and the handset isolation unit is used to control the energy output of the handset. Both the button isolation unit and the handset isolation unit include several fuses, several Zener diodes, and several resistors. The current limiting and voltage limiting effects of the fuses, Zener diodes, and resistors are used to control the output energy of the corresponding devices.

[0102] In addition, this application embodiment also provides a broadcast telephone system, including a broadcast service platform and a plurality of broadcast telephone devices as described above, wherein all the broadcast telephone devices and the broadcast service platform are communicatively connected.

[0103] In this embodiment, a broadcast telephone system can be constructed by several broadcast telephone devices and a broadcast service platform. Each broadcast telephone device can communicate with each other, and the broadcast service platform can also communicate with each broadcast telephone device. In practical applications, another broadcast telephone device can be dialed and paged through the keypad matrix in each broadcast telephone device to conduct remote broadcast amplification.

[0104] In the description of this specification, references to terms such as "one embodiment," "another embodiment," or "some embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0105] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A broadcast telephone device, characterized in that, It includes a housing, button matrix, handset, control module, trigger module, magnetic switch module, electrical isolation module, sound acquisition module, audio module, and PoE network module; The control module, the trigger module, the electrical isolation module, and the PoE network module are disposed inside the housing; the key matrix, the magnetic switch module, and the handset handle are mounted on the surface of the housing. The electrical isolation module is connected to the control module, the first end of the electrical isolation module is connected to the key matrix, the second end of the electrical isolation module is connected to the first end of the sound acquisition module, and the second end of the sound acquisition module is connected to the earpiece handle. The trigger module, the magnetic switch module, and the audio module are respectively connected to the control module, and the PoE network module is used to supply power to the control module, the trigger module, the magnetic switch module, and the audio module.

2. The device according to claim 1, characterized in that, The triggering module includes an input triggering unit and an output triggering unit; The first end of the input trigger unit is connected to the control module, and the second end of the input trigger unit is connected to an external device; The first end of the output trigger unit is connected to the control module, and the second end of the output trigger unit is connected to the external device.

3. The device according to claim 2, characterized in that, The input triggering unit includes a first resistor, a second resistor, and a first diode; The first end of the first resistor is connected to the control module, the second end of the first resistor is connected to the positive terminal of the first diode, and the negative terminal of the first diode is connected to the external device. The first end of the second resistor is connected to the positive terminal of the first diode, and the second end of the second resistor is connected to the POE network module; The output trigger unit includes a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a second diode, a first transistor, a second transistor, a third transistor, and a relay switch; The base of the first transistor is connected to the control module through the fourth resistor, the first end of the third resistor is connected to the fourth resistor, and the second end of the third resistor is grounded. The collector of the first transistor is connected to the POE network module through the sixth resistor, the emitter of the first transistor is connected to the base of the second transistor, the emitter of the first transistor is connected to the first end of the fifth resistor, and the second end of the fifth resistor is grounded. The emitter of the second transistor is connected to the emitter of the third transistor, the collector of the second transistor is connected to the first terminal of the relay switch, and the collector of the second transistor is connected to the second terminal of the relay switch through the second diode; The first terminal of the fifth resistor is connected to the base of the third transistor, and the collector of the third transistor is connected to the collector of the second transistor; the third terminal of the relay switch is connected to the external device.

4. The device according to claim 1, characterized in that, The magnetic switch module includes a seventh resistor, an eighth resistor, a third diode, and a magnetic sensor; The first end of the seventh resistor is connected to the control module, the second end of the seventh resistor is connected to the positive terminal of the third diode, and the negative terminal of the third diode is connected to the magnetic sensor. The first end of the eighth resistor is connected to the positive terminal of the third diode, and the second end of the eighth resistor is grounded.

5. The device according to claim 1, characterized in that, The audio module includes a decoding unit, a power amplifier unit, and a loudspeaker; The first end of the decoding unit is connected to the control module, the second end of the decoding unit is connected to the first end of the power amplifier unit, and the second end of the power amplifier unit is connected to the loudspeaker.

6. The device according to claim 5, characterized in that, The audio module also includes a broadcast amplification unit and a broadcast loudspeaker; The first end of the broadcast amplification unit is connected to the third end of the decoding unit, the second end of the broadcast amplification unit is connected to the broadcast loudspeaker, and the third end of the broadcast amplification unit is connected to the earpiece handle.

7. The device according to claim 6, characterized in that, The broadcast amplification unit includes an operational amplifier subunit and a power amplifier subunit; The first terminal of the operational amplifier subunit is connected to the third terminal of the decoding unit, the second terminal of the operational amplifier subunit is connected to the first terminal of the power amplifier subunit, and the second terminal of the power amplifier subunit is connected to the broadcast loudspeaker.

8. The device according to claim 1, characterized in that, The device also includes a voltage conversion module, the input of which is connected to the PoE network module.

9. The device according to claim 1, characterized in that, The electrical isolation module includes a key isolation unit and a handset / microphone handle isolation unit; The first end of the button isolation unit is connected to the control module, and the second end of the button isolation unit is connected to the button matrix; The first end of the earpiece isolation unit is connected to the control module, and the second end of the earpiece isolation unit is connected to the first end of the sound acquisition module.

10. A broadcast telephone system, characterized in that, It includes a broadcast service platform and several broadcast telephone devices as described in any one of claims 1-9, all of which are communicatively connected to the broadcast service platform.

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