CN219960571U - Cascade wireless microphone and wireless microphone system - Google Patents
Cascade wireless microphone and wireless microphone system Download PDFInfo
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- CN219960571U CN219960571U CN202321466643.6U CN202321466643U CN219960571U CN 219960571 U CN219960571 U CN 219960571U CN 202321466643 U CN202321466643 U CN 202321466643U CN 219960571 U CN219960571 U CN 219960571U
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Abstract
The utility model discloses a cascading wireless microphone device and a wireless microphone system; relates to the technical field of wireless sound transmission; comprising the following steps: a power supply, an antenna, and a plurality of wireless microphones; the power interfaces of the wireless microphones are cascaded, and the antenna interfaces of the wireless microphones are cascaded; the power supply is connected to the power supply interface of one of the wireless microphones to supply power to the cascading wireless microphone device; the antenna is connected to the antenna interface of one of the wireless microphones to interact radio frequency signals with the cascade wireless microphone device; the scheme is improved on the basis of the existing wireless microphone, and the power supply and the antennas of the wireless microphone are respectively cascaded, so that the power and the number of paths of the power supply are not limited any more, an independent antenna distributor is not required to be arranged, and the problems of stacking and interference of whip antennas are also avoided.
Description
Technical Field
The utility model relates to the technical field of wireless sound transmission, in particular to a cascading wireless sound transmission device and a wireless sound transmission system.
Background
Conventional wireless microphones (microphones, microphones and microphones are all different names of a class of products and are suitable for different contexts or language habits) generally adopt a method of externally connecting a power adapter to power a receiver, and an antenna only has a single input interface, as shown in fig. 1, and can only be input but not output. In practical applications, such as meeting rooms, multifunctional halls, gyms and other places, a plurality of microphones are often needed, that is, a plurality of parallel-stacked machines are needed for corresponding receivers, and the conventional solutions are as follows:
the antenna distribution system method is as shown in fig. 2, and a signal received by an antenna is input to the antenna distributor by using an antenna distributor and a pair of lead-out antennas (directional or omnidirectional or whip-shaped), and then the signal is divided into multiple paths by the antenna distributor and is input to each receiver. Meanwhile, the antenna distributor can also supply power to each receiver through a power line; however, the problem with this approach is:
a separate antenna distributor is required, and generally the price of the antenna distributor is higher than that of a wireless microphone of the same grade, so that the cost of the system is obviously increased.
In addition, the power supply is provided by the antenna distributor in a concentrated way, and the inside of the antenna distributor is provided with a switching power supply or is directly powered by an external power supply adapter, so that the capacity of the power supply is determined to be a bottleneck, and the problem of insufficient power supply is easy to occur for a part of receivers with higher power consumption.
Secondly, because of the power supply and the antenna distribution mode, the number of the stacking machines is obviously limited, and the power supply of 4 receivers and the antenna distribution of 5 receivers can be realized generally, and more antenna distributors must be connected in series if more devices are to be used.
Independent connection as shown in fig. 3, antenna ports of each receiver are all provided with standard whip antennas, and each power port is independently powered, so that some obvious problems exist in the way: firstly, how many power ports are needed by using how many receivers, but in the engineering cabinet, all devices are generally powered by an intelligent power controller, port resources are limited and precious (adding ports means adding devices and further increasing cost), and obvious power ports are not enough when the number of stacked devices is large; secondly, each receiver needs to be connected with a receiving antenna, the antennas are mutually stacked, and according to the propagation principle of wireless radio frequency signals, serious radio frequency phase interference can occur when multiple antennas are mutually stacked, and the serious radio frequency phase interference is unavoidable, so that the received signals are greatly degraded, and the receiving effect is deteriorated; thirdly, the number of the stacking machines is obviously limited, because the more the equipment is, the more the antenna parts are disordered, the more the power port is required, and the use effect of the whole system is obviously deteriorated.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: when the existing wireless microphone cluster is used, antenna distributors are required to be configured independently or antennas are stacked mutually, and the signal receiving cost, the receiving efficiency and the reliability cannot be guaranteed; the utility model aims to provide a cascading wireless microphone device and a wireless microphone system, which are improved on the basis of the existing wireless microphone, and the power and the number of paths of the power supply are not limited any more by respectively cascading the power supply and the antennas of the wireless microphone, so that a separate antenna distributor is not required to be equipped, and the problems of stacking and interference of whip antennas are avoided.
The utility model is realized by the following technical scheme:
the present solution provides a cascaded wireless microphone device comprising: a power supply, an antenna, and a plurality of wireless microphones;
the power interfaces of the wireless microphones are cascaded, and the antenna interfaces of the wireless microphones are cascaded;
the power supply is connected to the power supply interface of one of the wireless microphones to supply power for the cascading wireless microphone device;
the antenna is connected to the antenna interface of one of the wireless microphones to interact radio frequency signals with the cascade wireless microphone device.
The working principle of the scheme is as follows: when the existing wireless microphone cluster is used, antenna distributors are required to be configured independently or antennas are stacked mutually, and the signal receiving cost, the receiving efficiency and the reliability cannot be guaranteed; the utility model aims to provide a cascading wireless microphone device and a wireless microphone system, which are improved on the basis of the existing wireless microphone, and the power and the number of paths of the power supply are not limited any more by respectively cascading the power supply and the antennas of the wireless microphone, so that a separate antenna distributor is not required to be equipped, and the problems of stacking and interference of whip antennas are avoided.
The whole set of cascading wireless microphone device only needs one power port, and the receiver needs how much power to have how much power, so that the cascading wireless microphone device can be expanded infinitely theoretically; the whole cascade wireless microphone device only needs a pair of input antennas, and the signal receiving efficiency of the system is obviously improved.
The further optimization scheme is that the power interface of the wireless microphone comprises at least 1 power input port and 1 power output port;
the power output port of the upper-stage wireless microphone is connected with the power input port of the lower-stage wireless microphone, and the power is connected to the power input port of the first-stage wireless microphone.
In a further optimized scheme, the power input port and the power output port are three-phase power sockets,
the male head of the three-phase power socket is connected with a power supply or a power supply output port of a wireless microphone at the upper stage, one female head of the three-phase power socket supplies power for the wireless microphone, and the other female head is connected with a power supply input port of the wireless microphone at the lower stage.
The wireless microphone is characterized by further comprising a current conversion device, wherein the power supply is 220V alternating current, and the 220V alternating current is converted into 12V direct current by the current conversion device to be supplied to each wireless microphone.
The antenna interface of the wireless microphone comprises at least 1 antenna input port and 1 antenna output port;
the antenna output port of the upper-stage wireless microphone is connected with the antenna input port of the lower-stage wireless microphone, and the antenna is connected to the antenna input port of the first-stage wireless microphone.
In a further optimized scheme, the wireless microphone further comprises: the device comprises an impedance matching circuit, a filter circuit, a signal amplifying circuit and an attenuation compensation circuit;
the radio frequency signal entering the wireless microphone is divided into two paths after being processed by the impedance matching and filtering circuit, one path is used in the wireless microphone, and the other path is input to the next-stage wireless microphone from the antenna output port after being processed by the attenuation compensation circuit.
In a further optimized scheme, the wireless microphone further comprises an audio output port for outputting an audio signal.
The wireless microphone further comprises a metal shell, and a power switch, a display screen and control keys are arranged on the front panel of the metal shell.
The scheme also provides a wireless sound transmission system which comprises the cascading wireless sound transmission device.
The further optimization scheme is that the device further comprises a mounting bracket used for mounting the cascading wireless microphone device on the engineering cabinet.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
the utility model provides a cascading wireless microphone device and a wireless microphone system, which are improved on the basis of the existing wireless microphone, and the power and the number of paths of the power supply are not limited any more by respectively cascading the power supply and the antennas of the wireless microphone, so that an independent antenna distributor is not required to be equipped, and the problems of stacking and interference of whip antennas are avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
fig. 1 is a schematic diagram of a conventional wireless microphone structure;
fig. 2 is a schematic diagram of a wireless microphone structure of an antenna distribution system method;
FIG. 3 is a schematic diagram of a stand-alone wireless microphone configuration;
FIG. 4 is a schematic diagram of a cascaded wireless microphone arrangement;
fig. 5 is a schematic view of a wireless microphone;
fig. 6 is a schematic diagram of the principle of operation of a cascaded wireless microphone.
In the drawings, the reference numerals and corresponding part names:
the antenna comprises a 1-metal shell, a 2-female head, a 3-male head, a 4-antenna input port, a 5-antenna output port, a 6-switching power supply, a 7-impedance matching and filtering circuit, an 8-attenuation compensation circuit and a 9-main circuit board.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
Example 1
Embodiment 1 provides a cascaded wireless microphone device, as shown in fig. 4, comprising: a power supply, an antenna, and a plurality of wireless microphones;
the power interfaces of the wireless microphones are cascaded, and the antenna interfaces of the wireless microphones are cascaded;
the power supply is connected to the power supply interface of one of the wireless microphones to supply power for the cascading wireless microphone device;
the antenna is connected to the antenna interface of one of the wireless microphones to interact radio frequency signals with the cascade wireless microphone device.
The power interface of the wireless microphone comprises at least 1 power input port and 1 power output port;
the power output port of the upper-stage wireless microphone is connected with the power input port of the lower-stage wireless microphone, and the power is connected to the power input port of the first-stage wireless microphone.
The power input port and the power output port are three-phase power sockets,
the male head of the three-phase power socket is connected with a power supply or a power supply output port of a wireless microphone at the upper stage, one female head of the three-phase power socket supplies power for the wireless microphone, and the other female head is connected with a power supply input port of the wireless microphone at the lower stage.
The wireless microphone also comprises a current conversion device, wherein the power supply is 220V alternating current, and the 220V alternating current is converted into 12V direct current through the current conversion device and is supplied to each wireless microphone.
The antenna interface of the wireless microphone comprises at least 1 antenna input port and 1 antenna output port;
the antenna output port of the upper-stage wireless microphone is connected with the antenna input port of the lower-stage wireless microphone, and the antenna is connected to the antenna input port of the first-stage wireless microphone.
The wireless microphone further includes: the device comprises an impedance matching circuit, a filter circuit, a signal amplifying circuit and an attenuation compensation circuit;
the radio frequency signal entering the wireless microphone is divided into two paths after being processed by the impedance matching and filtering circuit, one path is used in the wireless microphone, and the other path is input to the next-stage wireless microphone from the antenna output port after being processed by the attenuation compensation circuit.
The wireless microphone also includes an audio output port for outputting an audio signal. The radio frequency signal in the wireless microphone demodulates the audio signal and is output by the audio output port. Inputting an audio signal received by the wireless microphone to a subsequent device for recording or on-site sound expansion;
the wireless microphone also comprises a metal shell, and a power switch, a display screen and control keys are arranged on the front panel of the metal shell.
As shown in fig. 5, the wireless microphone is provided with a 1-set metal casing 1 (including a bottom case, a cover plate, a front panel, etc.) as a carrier, a switching power supply 6 and a main board 9 (including a receiving circuit, a control circuit, an output circuit, etc.) are internally mounted, and a power switch, a display screen, control keys, a display, a control circuit, etc. are mounted on the front panel thereof as functional operations and display functions of the receiver.
The cascade wireless microphone device is directly powered on based on 220V alternating current, and a power port is connected in parallel with an input port of the wireless microphone as an output port; the wireless microphone is internally provided with a switching power supply, and the input 220V alternating current is processed by the switching power supply and then is changed into 12V direct current which is provided for the whole circuit board in the wireless microphone; the power supply output port of the first wireless microphone is connected to the power supply input port of the next wireless microphone by using a connecting wire, the power supply controller only needs to leave one power supply socket for the wireless microphone, and the wireless microphone has low power per se, so that a plurality of wireless microphones can be cascaded in theory, and the wiring is simple;
each antenna input port of the wireless microphone is correspondingly provided with an antenna output port, and radio frequency signals entering through the antenna input ports are output through the antenna output ports after being subjected to filtering, impedance matching and attenuation compensation and then are input to the antenna input port of the next wireless microphone; according to the circulation, one antenna input can drive a plurality of wireless microphones, wiring is simple, cost is low, and interference among devices is avoided.
Example 2
The present embodiment provides a wireless microphone system, including the cascaded wireless microphone device of the previous embodiment.
The installation support is used for installing the cascading wireless microphone device on the engineering cabinet.
The working principle of the cascade wireless microphone device is as follows:
the wireless microphone in the cascade wireless microphone device takes 1 set of metal shell (comprising a bottom shell, a cover plate, a front panel and the like) as a carrier, 220V alternating current is input through a power supply mother seat on the back of the wireless microphone, the input power is divided into two paths, one path of power is output to a switch power board arranged in the wireless microphone, the switch power board is processed into 12V direct current, and the 12V direct current is provided for each internal circuit board (receiving, controlling, displaying, outputting and the like) for use. The other path is directly connected to the adjacent power output seat and is input to the power input seat of the next wireless microphone through a special power supply cascade line to supply power to the next wireless microphone. The power supply of all wireless microphones participating in the stacking machine is completed by repeating the steps, and the power supply is actually connected in parallel, so that the power supply of other hosts cannot be influenced due to the fact that one host fails. Meanwhile, the 220V commercial power is directly supplied, and the wireless microphone is low in power, so that the problem of insufficient power supply is solved.
As shown in fig. 6, two adjacent three-phase power sockets are arranged on the metal shell 1: a male 3 and 2 female 2, wherein the female 2 is used as an input port for 220V ac mains. Inside the casing, the input of the female head 2 is divided into two paths, one path is connected to a built-in switch power board 6, 220V alternating current is converted into 12V direct current by the built-in switch power board, and the 12V direct current is provided for each circuit board in the casing for use; the other path is connected with the power male head 3 in close proximity and is used as power output, the output of the power male head is carried with the output female head 2 of the next receiver through a customized power line, and all the receivers can be connected according to the cycle;
the metal casing 1 of this embodiment is provided with 4 antenna input/output ports, and is divided into two groups, each group corresponding to a different antenna input. The two antenna ports of each group are divided into an antenna input port 4 and an antenna output port 5, the antenna input port 4 is provided with a DC 12V 100mA power supply by an internal circuit board, the power supply can be used for supplying power to an amplifier of an external active antenna, signals received by the antenna are also input into an internal circuit by the antenna, the signals are divided into two paths after entering the internal circuit, and one path is provided for an internal main circuit board 9 (comprising receiving, controlling and the like) for demodulating transmitted audio signals. The other path of the signals is output to an antenna output port 5 after being amplified and attenuated by an attenuation compensation circuit 8 (mainly for avoiding the attenuation of signals after a plurality of machines are stacked) and then is connected to an antenna input port 4 of the next machine, so that the cascade connection of the antennas of all wireless receivers in the system is completed;
the radio frequency signal received by the antenna connected with the first wireless microphone of the stacking machine directly enters an antenna input port (or can be externally connected with an omnidirectional and directional antenna with an amplifier through the port), the radio frequency signal is input into an internal circuit, the signal is subjected to impedance matching, filtering and the like and is divided into two paths, one path is provided for an internal radio frequency receiving circuit, and after a series of processing such as filtering, amplifying, frequency discrimination, intermediate frequency, demodulation, de-emphasis, expansion and the like, the signal is finally restored to an audio signal before modulation at a transmitter end, and the audio signal is output through an audio output port behind a receiver after amplification and is replayed to a listener through equipment such as a sound console, a power amplifier, a sound box and the like or is directly used for recording. The other path of radio frequency signals are amplified, attenuated and compensated by the corresponding circuit (mainly avoiding the signals from being attenuated after a plurality of laminating machines) and output to an antenna output port after impedance matching, and are output to an antenna input port of a next wireless microphone through radio frequency lines to provide radio frequency signals for the next wireless microphone. And the antenna (radio frequency) signal connection of all the wireless microphones participating in the stacking machine can be completed by sequentially repeating, and the aim that a pair of antenna inputs correspond to a plurality of wireless microphones is fulfilled.
The power supply port meets the power supply requirements of all wireless microphones, and avoids the system defect caused by the fact that a user uses an unqualified external power supply adapter; the two whip antennas (also can be externally connected with an extension antenna) can meet the receiving (radio frequency input) requirements of all wireless microphones, are not provided with messy antennas (and signal phase interference, attenuation and the like caused by the messy antennas), and are not provided with expensive antenna distributors, so that the economy, the easiness in use and the reliability of the system are realized; the equipment is simple to connect, no complex connecting lines exist, and the reliability problem caused by a plurality of connecting lines of signals is avoided.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. A cascading wireless microphone apparatus, comprising: a power supply, an antenna, and a plurality of wireless microphones;
the power interfaces of the wireless microphones are cascaded, and the antenna interfaces of the wireless microphones are cascaded;
the power supply is connected to the power supply interface of one of the wireless microphones to supply power for the cascading wireless microphone device;
the antenna is connected to the antenna interface of one of the wireless microphones to interact radio frequency signals with the cascade wireless microphone device.
2. A cascading wireless microphone apparatus according to claim 1, wherein the power interface of the wireless microphone comprises at least 1 power input port and 1 power output port;
the power output port of the upper-stage wireless microphone is connected with the power input port of the lower-stage wireless microphone, and the power is connected to the power input port of the first-stage wireless microphone.
3. A cascading wireless microphone apparatus according to claim 2, wherein the power input port and the power output port are three-phase power sockets,
the male head of the three-phase power socket is connected with a power supply or a power supply output port of a wireless microphone at the upper stage, one female head of the three-phase power socket supplies power for the wireless microphone, and the other female head is connected with a power supply input port of the wireless microphone at the lower stage.
4. A cascading wireless microphone apparatus according to claim 1, further comprising a current converting means, wherein the power source is 220V ac power, and the 220V ac power is converted into 12V dc power by the current converting means to be supplied to each wireless microphone.
5. A cascading wireless microphone apparatus according to claim 1, wherein the antenna interface of the wireless microphone comprises at least 1 antenna input port and 1 antenna output port;
the antenna output port of the upper-stage wireless microphone is connected with the antenna input port of the lower-stage wireless microphone, and the antenna is connected to the antenna input port of the first-stage wireless microphone.
6. The cascading wireless microphone apparatus of claim 5, wherein the wireless microphone further comprises: the device comprises an impedance matching circuit, a filter circuit, a signal amplifying circuit and an attenuation compensation circuit;
the radio frequency signal entering the wireless microphone is divided into two paths after being processed by the impedance matching and filtering circuit, one path is used in the wireless microphone, and the other path is input to the next-stage wireless microphone from the antenna output port after being processed by the attenuation compensation circuit.
7. A cascading wireless microphone apparatus according to claim 1, wherein the wireless microphone further comprises an audio output port for outputting an audio signal.
8. The cascading wireless microphone apparatus of claim 1, wherein the wireless microphone further comprises a metal housing, and wherein a power switch, a display screen and control buttons are mounted on a front panel of the metal housing.
9. A wireless microphone system comprising a cascading wireless microphone apparatus as claimed in any one of claims 1 to 8.
10. A wireless microphone system according to claim 9, further comprising a mounting bracket for mounting the cascading wireless microphone apparatus to an engineering cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321466643.6U CN219960571U (en) | 2023-06-09 | 2023-06-09 | Cascade wireless microphone and wireless microphone system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321466643.6U CN219960571U (en) | 2023-06-09 | 2023-06-09 | Cascade wireless microphone and wireless microphone system |
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| Publication Number | Publication Date |
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| CN219960571U true CN219960571U (en) | 2023-11-03 |
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| CN202321466643.6U Active CN219960571U (en) | 2023-06-09 | 2023-06-09 | Cascade wireless microphone and wireless microphone system |
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- 2023-06-09 CN CN202321466643.6U patent/CN219960571U/en active Active
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