Communication equipment and combined communication equipment

Abstract

The utility model provides communication equipment and combined communication equipment. The communication equipment comprises a first talkback unit, a second talkback unit and a switching unit, the first talkback unit and the second talkback unit are in a receiving state by default; wherein the switching unit comprises a first key and a second key; when a first operation is executed on the first key, the first talkback unit is switched from a receiving state to a sending state; when the first operation is executed on the second key, the second talkback unit is switched from the receiving state to the receiving state; the first key and the second key cannot be subjected to the first operation at the same time. According to the application, the talkback unit for sending the voice information to the outside is selected and switched through the key, only one talkback unit is in the sending state in the same time period, and the two talkback units are both in the receiving state after the sending is finished and are not in the sending state for a long time, so that the overall power consumption of the equipment is reduced, and the user experience is improved. Meanwhile, voice information sent by different devices can be received, and talkback modes of the different devices are not limited.

Description

TECHNICAL FIELD

[0001] The utility model relates to a talkback communication road technical field, concretely relates to a communication equipment and combined communication equipment. BACKGROUND

[0002] In the communication field, the mobile communication equipment with talkback function is more and more popular, and the application of the mobile communication equipment indeed provides the user between the communication within a certain distance limited range with convenient, fast and effective communication effect. It can realize the communication of multiple people at the same time, that is, one call a hundred answers, the operating cost is extremely low, does not consume communication cost, is convenient to use, and also has many functions such as group call broadcast, system call, confidential call, and is the first choice of emergency communication equipment.

[0003] At present, the common talkback mode has two kinds, that is, hardware talkback mode and software talkback mode, some communication equipment only has a single talkback mode, and the application range is limited, and some communication equipment has two talkback modes, and the user can switch between the two talkback modes according to the use scene when using. The common switching mode is to switch the hard talkback mode through the mechanical key and switch the soft talkback mode through the touch screen operation.

[0004] However, for the communication equipment with double talkback mode, when switching based on the above switching mode, when the communication equipment is in the receiving state, it can only receive the voice information in one talkback mode, that is, when switching in the hard talkback mode, the voice information sent by other equipment in the soft talkback mode cannot be received, and vice versa, that is, the voice information sent by different equipment in different modes cannot be received at the same time. This communication mode has the risk of missing receiving voice information, brings many inconveniences, causes the waste of resources, and does not fully play the function of the communication equipment with double talkback mode. INVENTION CONTENTS

[0005] The utility model provides a kind of communication equipment and combined communication equipment, which can solve the technical problem that the existing communication equipment with double talkback mode cannot receive voice information sent by different equipment in different modes simultaneously and exist missing receiving voice information.

[0006] In the first aspect, the application embodiment provides a kind of communication equipment, including first talkback unit, second talkback unit, switching unit and receiving and sending unit;After successfully pairing with external equipment, the first talkback unit and the second talkback unit are received by the receiving and sending unit from the voice information sent by the external equipment and send voice information to the external equipment;

[0007] The first talkback unit and the second talkback unit are in receiving state by default;

[0008] The switching unit includes first key and second key.

[0009] The first intercom unit is switched from a receiving state to a sending state when the first key is operated by the first operation; and the second intercom unit is switched from a receiving state to a sending state when the second key is operated by the first operation.

[0010] The first key and the second key cannot be operated by the first operation at the same time.

[0011] In some embodiments, the first intercom unit adopts any one of a hard intercom mode and a soft intercom mode; and the second intercom unit adopts any one of the hard intercom mode and the soft intercom mode.

[0012] In some embodiments, the communication device further comprises a control unit, which is connected to the first intercom unit, the second intercom unit, the switching unit and the receiving and sending unit respectively.

[0013] The first key outputs a first instruction to the control unit when the first key is operated by the first operation; and the control unit controls the first intercom unit to be switched from a receiving state to a sending state in response to the first instruction.

[0014] The second key outputs a second instruction to the control unit when the second key is operated by the first operation; and the control unit controls the second intercom unit to be switched from a receiving state to a sending state in response to the second instruction.

[0015] In some embodiments, the first operation includes any one of a single trigger of the key, a trigger of the key for more than a first preset time length and a continuous trigger of the key.

[0016] In some embodiments, the first intercom unit and the second intercom unit are both preset with a plurality of frequency bands for receiving voice information, and each frequency band corresponds to a different frequency.

[0017] The first key further outputs a third instruction to the control unit when the first key is operated by a second operation; and the control unit switches different frequency bands for the first intercom unit to receive voice information in response to the third instruction.

[0018] The second key further outputs a fourth instruction to the control unit when the second key is operated by the second operation; and the control unit switches different frequency bands for the second intercom unit to receive voice information in response to the fourth instruction.

[0019] The second operation includes any one of a single trigger, a trigger of the key for more than a second preset time length and a continuous trigger of the key.

[0020] In some embodiments, the first button is further configured to output a fifth instruction to the control unit when a third operation is performed; and the control unit is configured to switch the frequency band of the first intercom unit receiving voice information to a default frequency band of receiving voice information in response to the fifth instruction.

[0021] The second button is further configured to output a sixth instruction to the control unit when a third operation is performed; and the control unit is configured to switch the frequency band of the second intercom unit receiving voice information to a default frequency band of receiving voice information in response to the sixth instruction.

[0022] The third operation includes any one of triggering a button for more than a third preset time length and continuously triggering a button.

[0023] In some embodiments, the control unit includes a control chip U1, a first resistor, a first capacitor, a second resistor, and a third resistor.

[0024] The control chip U1 includes at least a power supply end, a first intercom receiving end, a first intercom sending end, a second intercom receiving end, a second intercom sending end, and a switching identification end.

[0025] A first end of the first resistor is connected to a battery output end, and a second end of the first resistor is connected to the power supply end; a first end of the first capacitor is connected to the first end of the first resistor, and a second end of the first capacitor is connected to a preset voltage end.

[0026] The first intercom receiving end and the first intercom sending end are respectively connected to the receiving and sending ends of the first intercom unit; and the second intercom receiving end and the second intercom sending end are respectively connected to the receiving and sending ends of the second intercom unit.

[0027] A first end of the second resistor is connected to an output end of the switching unit, and a second end of the second resistor is connected to the switching identification end; a first end of the third resistor is connected to the second end of the second resistor, and a second end of the third resistor is connected to the preset voltage end.

[0028] In some embodiments, the communication device further includes a microphone unit connected to the control unit.

[0029] When the first intercom unit is in a sending state, the control unit turns on the first intercom sending end and the microphone unit to realize the first intercom unit sending voice information outward.

[0030] When the second intercom unit is in a sending state, the control unit turns on the second intercom sending end and the microphone unit to realize the second intercom unit sending voice information outward.

[0031] In some embodiments, the first button and the second button are symmetrically arranged on two sides of the communication device; and the first button and the second button are provided with distinguishable shapes, patterns or colors.

[0032] In a second aspect, the embodiments of the present application further provide a combined communication device, comprising an external earphone and a main communication device.

[0033] The external earphone comprises a microphone unit; and the main communication device comprises a first intercom unit, a second intercom unit, a receiving and sending unit and a control unit.

[0034] After successful pairing with the external device, the first intercom unit and the second intercom unit both receive voice information sent by the external device and send voice information to the external device through the receiving and sending unit.

[0035] The first intercom unit and the second intercom unit are in a receiving state by default.

[0036] The external earphone is provided with a first button and a second button.

[0037] When the first button is operated for the first operation, the first intercom unit is switched from the receiving state to the sending state; and when the second button is operated for the first operation, the second intercom unit is switched from the receiving state to the receiving state.

[0038] The first button and the second button cannot be operated for the first operation at the same time.

[0039] The communication device and the combined communication device provided by the embodiments of the present application comprise a first intercom unit, a second intercom unit, a switching unit and a receiving and sending unit; after successful pairing of the intercom with the external device, the first intercom unit and the second intercom unit are in a receiving state by default; the switching unit comprises a first button and a second button; when the first button is operated for the first operation, the first intercom unit is switched from the receiving state to the sending state; when the second button is operated for the first operation, the second intercom unit is switched from the receiving state to the receiving state; and the first button and the second button cannot be operated for the first operation at the same time. The present application switches the intercom unit sending voice information by the button, and only one intercom unit is in the sending state at the same time, and after sending, both intercom units are in the receiving state, i.e. any intercom unit will not be in the sending state for a long time, which reduces the overall power consumption of the device, and voice information sent from different devices can be received, and the intercom mode of different devices is not limited. The switching mode of the present application is simple and fast, and can more flexibly cope with the intercom demand in different use environments, effectively avoiding the situation of missing voice information, and is more practical for emergency communication. At the same time, it saves communication cost and purchase cost, and there is no need to repeatedly purchase multiple communication devices. Attached Figure Description

[0040] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0041] Figure 1 This is a schematic diagram of the structure of a communication device provided in one embodiment of this application.

[0042] Figure 2 This is a schematic diagram of the structure of a communication device provided in another embodiment of this application.

[0043] Figure 3 A circuit diagram of a communication device provided in one embodiment of this application.

[0044] Figure 4 This is a schematic diagram of the structure of a communication device provided in another embodiment of this application.

[0045] Figure 5 This is a schematic diagram of the structure of a combined communication device provided in one embodiment of this application.

[0046] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0048] In addition, features described in the specification, operations or characteristics can be combined in any appropriate manner to form various embodiments. Meanwhile, the steps or actions in the method description can also be sequentially changed or adjusted in a manner that is apparent to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment, and do not mean that the sequence is necessary, unless otherwise stated that a certain sequence must be followed.

[0049] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the objects before and after are in an "or" relationship. The "connection" and "connection" in the present application include direct and indirect connections (connections) unless otherwise specified.

[0050] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0051] Figure 1 The structure schematic diagram of the communication device provided by an embodiment of the present application is shown in the figure. Figure 1 As shown, the communication device provided by the embodiment includes at least a first intercom unit 110, a second intercom unit 120, a switching unit 130 and a receiving and sending unit 140.

[0052] The communication device of the embodiment is an intercom, which can perform two-way communication within the range of radio wave propagation. After the communication device of the embodiment is successfully paired with other external devices, the first intercom unit 110 and the second intercom unit 120 can both receive voice information sent from the device and send voice information to the external device through the receiving and sending unit 140, that is, the first intercom unit 110 and the second intercom unit 120 share one receiving and sending unit 140 to transmit voice through a unique receiving and sending channel, realize resource sharing, and can save manufacturing cost.

[0053] In the embodiment, the first intercom unit 110 and the second intercom unit 120 are in a receiving state by default.

[0054] It can be known that there are at least two communication modes of the intercom, which are simplex mode and duplex mode. The simplex mode is to communicate in one way, that is, to send voice when the intercom button is pressed and to receive voice when the button is released. The communication on the same frequency is one-way, and when one party speaks, others need to listen quietly, and cannot communicate simultaneously. The simplex intercom needs to switch the switch frequently to control the receiving and transmitting states, and is not very convenient to use, but is widely used due to its low cost, small size, low power consumption and other advantages. The duplex mode allows users to communicate simultaneously, that is, to speak and listen at the same time, like using a normal telephone. The duplex intercom can work simultaneously in the receiving and transmitting circuits, and is more convenient to use. At the same time, the duplex mode is divided into two types: full duplex and half duplex. The full duplex mode allows users to receive and send information simultaneously, but the device needs to have high-quality audio processing and noise suppression functions. The half duplex mode allows users to send and receive alternately, but cannot do so simultaneously. Therefore, for both simplex mode and duplex mode, if it is desired that the intercom does not miss the information sent by other devices, it is necessary to ensure that it is in the receiving state for a long time to ensure that voice information can be received.

[0055] Especially, for the communication device of the embodiment, since it has two intercom units. If both intercom units are in the transmitting state, it is possible to miss the voice information of one of the intercom channels. If one of the two intercom units remains in the receiving state and the other remains in the transmitting state, the intercom unit that remains in the transmitting state for a long time needs more power consumption, which may cause the temperature of the intercom to rise in some cases, and even damage it. Therefore, for the two-channel intercom of the embodiment, the two intercom units remain in the receiving state by default, which can effectively reduce the possibility of missing voice information and also reduce power consumption, so that the device has a longer standby time.

[0056] In the embodiment, the switching unit 130 includes a first key and a second key, the first key corresponds to the first intercom unit 110, and the second key corresponds to the second intercom unit 120. When the first key is executed with the first operation, the first intercom unit 110 is switched from the receiving state to the transmitting state; when the second key is executed with the first operation, the second intercom unit 120 is switched from the receiving state to the transmitting state; and the first key and the second key cannot be executed with the first operation at the same time. That is, in the embodiment, only one intercom unit is in the transmitting state at the same time, and switches back to the receiving state after transmitting voice information, which can effectively reduce the power consumption of the communication device and receive voice information sent from different devices.

[0057] The first operation includes any one of single triggering of the button, triggering of the button for more than a first preset time length, and continuous triggering of the button. For example, the first intercom unit 110 or the second intercom unit 120 can be switched from the receiving state to the sending state by single clicking of the first button or the second button. For another example, to avoid the mis-triggering situation that may occur in single triggering, the first intercom unit 110 or the second intercom unit 120 can be switched from the receiving state to the sending state by long pressing of the first button or the second button for a certain time, which can be 3 seconds or 5 seconds. For another example, the first intercom unit 110 or the second intercom unit 120 can be switched from the receiving state to the sending state by continuous single clicking of the first button or the second button.

[0058] In some embodiments, the communication mode of the first intercom unit 110 and the second intercom unit 120 can be any one of the hard intercom mode and the soft intercom mode, and the intercom mode of different devices is not limited. For the communication device, the hard intercom and the soft intercom and the hard-soft intercom dual-mode communication can be implemented. When both of them adopt the same hard intercom mode or soft intercom mode, they can be applied to application scenarios that require multiple working states, for example, one of the intercom units is applied to listening or confidential communication, and only receives voice information from a specified frequency or channel, and the other intercom unit can be used to receive voice information of a regular frequency or channel. Similarly, one of the intercom units can adopt the hard intercom mode, and the other intercom unit can adopt the soft intercom mode to cope with the intercom demand in different distances and different network environments.

[0059] Figure 2 A structural schematic diagram of a communication device provided for another embodiment of the application is shown in FIG. 2. As shown in FIG. 2, the communication device provided by the embodiment includes a first intercom unit 110, a second intercom unit 120, a switching unit 130, a receiving and sending unit 140, and a control unit 150. Figure 2 The control unit 150 is connected with the first intercom unit 110, the second intercom unit 120, the switching unit 130, and the receiving and sending unit 140 respectively, so as to control the cooperative work of the units.

[0060] In the embodiment, the control unit 150 is connected with the first intercom unit 110, the second intercom unit 120, the switching unit 130, and the receiving and sending unit 140 respectively. The control unit 150 is taken as the core of the communication device, and controls the cooperative work of the units.

[0061] Specifically, when the first button is executed with the first operation, a first instruction is output to the control unit 150, and the control unit 150 controls the first intercom unit 110 to switch from the receiving state to the sending state in response to the first instruction. When the second button is executed with the first operation, a second instruction is output to the control unit 150, and the control unit 150 controls the second intercom unit 120 to switch from the receiving state to the sending state in response to the second instruction.

[0062] Figure 3A circuit diagram of a communication device is provided in an embodiment of the present application. As shown in Figure 3 The first button J1 and the second button J2 are in signal connection with the control unit 150, and different signals are output when the first button J1 and the second button J2 are operated in different manners.

[0063] The control unit 150 provided in the embodiment includes a control chip U1, a first resistor R1, a first capacitor C1, a second resistor R2 and a third resistor R3.

[0064] Specifically, the control chip U1 includes at least a power supply end, a first intercom receiving end, a first intercom sending end, a second intercom receiving end, a second intercom sending end and a switching identification end. The first end of the first resistor R1 is connected with a battery output end, and the second end of the first resistor R1 is connected with the power supply end. The first end of the first capacitor C1 is connected with the first end of the first resistor R1, and the second end of the first capacitor C1 is connected with a preset voltage end. The first intercom receiving end and the first intercom sending end are respectively connected with the receiving and sending ends of the first intercom unit 110. The second intercom receiving end and the second intercom sending end are respectively connected with the receiving and sending ends of the second intercom unit 120. The first end of the second resistor R2 is connected with the output end of the switching unit 130 (the first button J1 and the second button J2), for receiving the signal transmitted from the first button or the second button, and the second end of the second resistor R2 is connected with the switching identification end. The first end of the third resistor R3 is connected with the second end of the second resistor R2, and the second end of the third resistor R3 is connected with the preset voltage end.

[0065] In some embodiments, when the first button J1 or the second button J2 is operated in a first manner, the switching unit 130 outputs a switching signal representing a first instruction or a second instruction, and after the effective level of the switching signal is identified by the switching identification end of the control chip U1, the corresponding first intercom unit 110 or the second intercom unit 120 can be controlled to switch from a receiving state to a sending state.

[0066] In some embodiments, the first intercom unit 110 and the second intercom unit 120 are both preset with a plurality of frequency bands for receiving voice information, and each frequency band corresponds to a different frequency for receiving or sending voice information.

[0067] The first button is further configured to output a third instruction to the control unit 150 when operated in a second manner, and the control unit 150 switches different frequency bands for the first intercom unit 110 to receive voice information in response to the third instruction. The second button is further configured to output a fourth instruction to the control unit 150 when operated in the second manner, and the control unit 150 switches different frequency bands for the second intercom unit 120 to receive voice information in response to the fourth instruction.

[0068] Similarly, the second operation includes any one of a single trigger, a trigger of the button for more than a second preset time length, and a continuous trigger of the button. The second operation is different from the first operation, so that the first button or the second button can output different instructions to the control unit 150.

[0069] In some other embodiments, the first button is further configured to output a fifth instruction to the control unit 150 when a third operation is performed; and the control unit 150 is configured to switch the frequency band in which the first intercom unit 110 receives voice information to a default frequency band in which voice information is received in response to the fifth instruction. The second button is further configured to output a sixth instruction to the control unit 150 when the third operation is performed; and the control unit 150 is configured to switch the frequency band in which the second intercom unit 120 receives voice information to the default frequency band in which voice information is received in response to the sixth instruction.

[0070] Similarly, the third operation includes any one of a trigger of the button for more than a third preset time length, and a continuous trigger of the button. The third operation is different from the first operation and the second operation, so that the first button or the second button can output different instructions to the control unit 150.

[0071] It can be understood that the first intercom unit 110 and the second intercom unit 120 can implement intercom communication in multiple frequency bands, and the receiving frequency bands of the two intercom units can be the same or different. For example, in the case where the first intercom unit 110 adopts a hard intercom mode and the second intercom unit 120 adopts a soft intercom mode, the receiving frequency bands of the two intercom units can be the same, that is, intercom communication in the same frequency band is implemented by using different intercom modes. For another example, in the case where the first intercom unit 110 and the second intercom unit 120 both adopt a hard intercom mode or a soft intercom mode, the receiving frequency bands of the two intercom units can be different, that is, intercom communication in different frequency bands is implemented in the same intercom mode.

[0072] Figure 4 A structural schematic diagram of a communication device according to another embodiment of the present application is provided. As shown in the figure, the communication device according to the embodiment is based on any of the above-mentioned embodiments, and further includes a microphone unit 160 connected to the control unit 150. Figure 4

[0073] ​In the embodiment, when the first intercom unit 110 is in the sending state, the control unit 150 turns on the first intercom sending end and the microphone unit 160 to realize the sending of voice information by the first intercom unit 110; when the second intercom unit 120 is in the sending state, the control unit 150 turns on the second intercom sending end and the microphone unit 160 to realize the sending of voice information by the second intercom unit 120. That is, the first intercom unit 110 and the second intercom unit 120 share a set of microphone units 160. Since the first intercom unit 110 and the second intercom unit 120 cannot be in the sending state at the same time in the same time period, one microphone unit 160 can be used to share resources and save manufacturing costs.

[0074] In summary, the communication device provided in the embodiment includes a first intercom unit, a second intercom unit, a switching unit, and a receiving and sending unit. After the intercom and the external device are successfully paired, the first intercom unit and the second intercom unit are in the receiving state by default. The switching unit includes a first button and a second button. When the first button is operated for the first operation, the first intercom unit is switched from the receiving state to the sending state. When the second button is operated for the first operation, the second intercom unit is switched from the receiving state to the sending state. The first button and the second button cannot be operated for the first operation at the same time.

[0075] The embodiment switches the intercom unit for sending voice information by using the button, and only one intercom unit is in the sending state in the same time period. After the sending is completed, both intercom units are in the receiving state. That is, any intercom unit will not be in the sending state for a long time, which reduces the overall power consumption of the device. At the same time, voice information sent from different devices can be received, and the intercom mode of different devices is not limited. The switching method is simple and fast, and can more flexibly cope with the intercom demand in different use environments, effectively avoiding the situation of missing voice information, and is more practical for emergency communication. At the same time, the communication cost and the purchase cost are saved, and it is not necessary to repeatedly purchase multiple communication devices.

[0076] Based on the optimization design, in order to facilitate user operation and reduce the probability of button misoperation, in some embodiments, the first button and the second button are symmetrically arranged on the two sides of the communication device, and the first button and the second button are provided with distinguishable shapes, patterns, or colors. Based on this design, the communication state of the first intercom unit 110 and the second intercom unit can be flexibly switched according to the intercom demand in a specific situation.

[0077] Figure 5 A structural schematic diagram of the combined communication device provided in an embodiment of the application is shown in FIG. 1. Figure 5As shown, the embodiment provides a combined communication device, which includes an external earphone 510 and a main communication device 520, wherein the external earphone includes the switching unit 5101 and the microphone unit 5101 in the above-mentioned embodiments, and the main communication device includes the first intercom unit 5201, the second intercom unit 5201, the receiving and sending unit 5203 and the control unit 5204 in the above-mentioned embodiments.

[0078] The external earphone communicates with the main communication device in a wireless manner, and the first button and the second button on the external earphone are used to select and switch the intercom unit for sending voice information, so that only one intercom unit is in a sending state at the same time, and multi-mode and multi-channel communication with different devices is realized.

[0079] The combined communication device of the embodiment has the structure or function of any of the above-mentioned communication devices, and can realize the same technical effects, and thus will not be described here again to avoid repetition.

[0080] The embodiments of the application are described above in combination with the drawings, but the application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative but not restrictive. Those skilled in the art can make some simple deductions, deformations or substitutions according to the idea of the application without departing from the scope of the application, and the application also includes these deductions, deformations or substitutions.

Claims

1. A communication device, characterized by The device comprises a first intercom unit, a second intercom unit, a switching unit and a receiving and sending unit; after pairing with an external device successfully, the first intercom unit and the second intercom unit both receive voice information sent by the external device and send voice information to the external device through the receiving and sending unit; The first intercom unit and the second intercom unit are in a receiving state by default; The switching unit comprises a first button and a second button; When the first button is operated by a first operation, the first intercom unit is switched from a receiving state to a sending state; when the second button is operated by a first operation, the second intercom unit is switched from a receiving state to a sending state; The first button and the second button cannot be operated by a first operation at the same time.

2. The communication device of claim 1, wherein, The first intercom unit adopts any one of a hard intercom mode and a soft intercom mode; the second intercom unit adopts any one of a hard intercom mode and a soft intercom mode.

3. The communication device of claim 1, wherein, The device further comprises a control unit; the control unit is connected with the first intercom unit, the second intercom unit, the switching unit and the receiving and sending unit respectively; When the first button is operated by a first operation, a first instruction is output to the control unit; the control unit controls the first intercom unit to be switched from a receiving state to a sending state in response to the first instruction; When the second button is operated by a first operation, a second instruction is output to the control unit; the control unit controls the second intercom unit to be switched from a receiving state to a sending state in response to the second instruction.

4. The communication device of claim 3, wherein, The first operation comprises any one of a single trigger of a button, a trigger of a button for more than a first preset time length and a continuous trigger of a button.

5. The communication device of claim 3, wherein, The first intercom unit and the second intercom unit are both preset with a plurality of frequency bands for receiving voice information; each frequency band corresponds to a different frequency; The first button is further used for outputting a third instruction to the control unit when operated by a second operation; the control unit switches different frequency bands for the first intercom unit to receive voice information in response to the third instruction; The second button is further used for outputting a fourth instruction to the control unit when operated by a second operation; the control unit switches different frequency bands for the second intercom unit to receive voice information in response to the fourth instruction; The second operation comprises any one of a single trigger, a trigger of a button for more than a second preset time length and a continuous trigger of a button.

6. The communication device of claim 5, wherein, The first button is further used for outputting a fifth instruction to the control unit when operated by a third operation; the control unit switches the frequency band for the first intercom unit to receive voice information to a default frequency band for receiving voice information in response to the fifth instruction; The second button is further used for outputting a sixth instruction to the control unit when operated by a third operation; the control unit switches the frequency band for the second intercom unit to receive voice information to a default frequency band for receiving voice information in response to the sixth instruction; The third operation comprises any one of a trigger of a button for more than a third preset time length and a continuous trigger of a button.

7. The communication device of any of claims 3-6, wherein, The control unit comprises a control chip U1, a first resistor, a first capacitor, a second resistor and a third resistor; The control chip U1 at least includes a power supply end, a first intercom receiving end, a first intercom sending end, a second intercom receiving end, a second intercom sending end and a switching identification end; The first end of the first resistor is connected with a battery output end, and the second end of the first resistor is connected with the power supply end; the first end of the first capacitor is connected with the first end of the first resistor, and the second end of the first capacitor is connected with a preset voltage end; The first intercom receiving end and the first intercom sending end are respectively connected with the receiving and sending ends of the first intercom unit; the second intercom receiving end and the second intercom sending end are respectively connected with the receiving and sending ends of the second intercom unit; The first end of the second resistor is connected with the output end of the switching unit, and the second end of the second resistor is connected with the switching identification end; the first end of the third resistor is connected with the second end of the second resistor, and the second end of the third resistor is connected with the preset voltage end.

8. The communication device of claim 7, wherein, Further comprising a microphone unit connected with the control unit; When the first intercom unit is in a sending state, the control unit turns on the first intercom sending end and the microphone unit to realize the first intercom unit sending voice information to the outside; When the second intercom unit is in a sending state, the control unit turns on the second intercom sending end and the microphone unit to realize the second intercom unit sending voice information to the outside.

9. The communication device of claim 1, wherein, The first button and the second button are symmetrically arranged on the two sides of the communication device; the first button and the second button are provided with distinguishable shapes, patterns or colors.

10. A combination communication device, comprising: The external earphone and the main communication device are included; The external earphone includes a microphone unit; the main communication device includes a first intercom unit, a second intercom unit, a receiving and sending unit and a control unit; After successfully pairing with the external device, the first intercom unit and the second intercom unit both receive voice information sent from the external device and send voice information to the external device through the receiving and sending unit; The first intercom unit and the second intercom unit are in a receiving state by default; The first button and the second button are arranged on the external earphone; When the first button is executed with a first operation, the first intercom unit is switched from a receiving state to a sending state; when the second button is executed with a first operation, the second intercom unit is switched from a receiving state to a sending state; Wherein, the first button and the second button cannot be executed with a first operation at the same time.

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