CN218941089U

CN218941089U - LED section code screen amateur intercom

Info

Publication number: CN218941089U
Application number: CN202222996400.5U
Authority: CN
Inventors: 陈日清
Original assignee: Quanzhou Iradio Electronics Co ltd
Current assignee: Quanzhou Iradio Electronics Co ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-04-28
Anticipated expiration: 2032-11-10

Abstract

The utility model relates to an LED section code screen amateur interphone which comprises a microprocessor, a radio frequency chip, a radio frequency transceiver antenna, a Mi-shaped LED section code screen and an array keyboard, wherein the radio frequency chip adopts BK4819, the radio frequency chip adopts BK1080, the radio frequency transceiver antenna adopts a UV dual-band radio frequency antenna, the radio frequency chip and the array keyboard are respectively connected with the microprocessor, two paths of receiving channels and two paths of transmitting channels are connected between the radio frequency chip and the radio frequency transceiver antenna, and a radio channel is connected between the radio frequency chip and the radio frequency transceiver antenna; the code screen of the Mi-shaped LED segment is welded on the main board of the microprocessor and driven by a driving chip, and the driving chip is connected with the microprocessor. According to the utility model, the Chinese character 'mi' shaped LED segment code screen is used, a few simple English menus can be edited through software design, compared with an 8-segment nixie tube display screen, the displayed characters are easier to identify, and no extra film is required to be added.

Description

LED section code screen amateur intercom

Technical Field

The utility model relates to the technical field of interphones, in particular to an LED section code screen amateur interphone.

Background

The interphone is a two-way mobile communication tool, can communicate without any network support, has no telephone charge, is suitable for occasions of relatively fixed and frequent communication, is suitable for being held by hand or bagged and is convenient for individuals to carry about due to the fact that the interphone is small in size, light in weight and low in power, and can communicate and contact in going out.

The section code screen used by the conventional amateur interphone is generally an eight-section nixie tube, more setting menus are needed, different films are required to be designed in advance for displaying different menus, and the display can be performed only by the preset films, so that the space of the display screen is occupied, the display content of the screen is crowded and difficult to identify, and modification and editing cannot be performed.

Disclosure of Invention

In view of the defects of the prior art, the technical problem to be solved by the utility model is to provide the LED segment code screen amateur interphone which is convenient to edit and easier to identify.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the LED section code screen amateur interphone comprises a microprocessor, a radio frequency chip, a radio frequency receiving and transmitting antenna, a Mi-shaped LED section code screen and an array keyboard, wherein the radio frequency chip adopts BK4819, the radio frequency chip adopts BK1080, the radio frequency receiving and transmitting antenna adopts a UV dual-band radio frequency antenna, the radio frequency chip and the array keyboard are respectively connected with the microprocessor, two paths of receiving channels and two paths of transmitting channels are connected between the radio frequency chip and the radio frequency receiving and transmitting antenna, and a radio channel is connected between the radio frequency chip and the radio frequency receiving and transmitting antenna; the meter-shaped LED segment code screen is welded on a main board of the microprocessor and driven by a driving chip, and the driving chip is connected with the microprocessor.

Preferably, the array keyboard employs a 4 x 4 array.

Preferably, the array keyboard is connected with the microprocessor through a flexible flat cable.

Preferably, the driving chip adopts a TM1640 driving chip.

Preferably, the interphone further comprises a microphone and a loudspeaker, wherein the microphone is connected with the radio frequency chip, the radio frequency chip is further connected with a volume regulator, and the volume regulator is connected with the loudspeaker through an audio power amplifier.

Preferably, the array keyboard is mounted on the array keyboard plate, the back side of the array keyboard plate is provided with a mounting groove, and the loudspeaker is fixed in the mounting groove of the array keyboard plate through a weight and a screw.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the Chinese character 'mi' shaped LED segment code screen is used, a few simple English menus can be edited through software design, compared with an 8-segment nixie tube display screen, the displayed characters are easier to identify, and no extra film is required to be added.

The interphone adopts the BK4819 of Shanghai Botong as a radio frequency transceiver chip, BK1080 as a radio chip, and is controlled by matching with a proper microprocessor, and the characteristics of the radio frequency working frequency can be freely defined by using the BK4819 radio frequency chip to realize multi-band reception, and the receivable frequency range is from 100MHz to 520MHz; and the BK4819 radio frequency chip can receive and play the AM signal, and after the radio frequency is set to the aviation frequency band, the aviation channel signal can be normally played without increasing any hardware cost.

Drawings

Fig. 1 is a schematic block diagram of an intercom of the present utility model.

Detailed Description

In order to make the above features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1, the present embodiment provides an LED segment code screen amateur interphone, which includes a microprocessor 10, a radio frequency chip 20, a radio frequency chip 40, a radio frequency transceiver antenna 30, a m-word LED segment code screen 13, an array keyboard 12 and a key 11 connected with the microprocessor 10.

In this embodiment, the microprocessor 10 selects a suitable microprocessor from the market, for example, STM32F405RG may be used. The radio frequency chip 20 adopts a BK4819 chip, the radio chip 40 adopts a BK1080 chip, the radio frequency transceiver antenna 30 adopts a UV dual-band radio frequency antenna, and the radio frequency chip 20, the radio chip 40 and the array keyboard 12 are respectively connected with the microprocessor 10.

Two paths of receiving channels and two paths of transmitting channels are connected between the radio frequency chip 20 and the radio frequency receiving and transmitting antenna 30 in the embodiment: a receiving channel control switch is connected between the two receiving channels and the radio frequency chip 20, and one receiving channel can be selected by the receiving channel control switch, and the two receiving channels are respectively a 100-240MHz receiving channel and a 240-520MHz receiving channel. An emission channel control switch is connected between the two emission channels and the radio frequency chip, and can select one emission channel through the emission channel control switch, and the two emission channels are respectively a 100-240MHz emission channel and a 240-520MHz emission channel. Both the receive channel control switch and the transmit channel control switch are commercially available and configured, and the receive channel control switch and the transmit channel control switch are controllable by the rf chip 20 and are conventional techniques, and are not described in detail herein.

A radio channel is connected between the radio chip 40 and the radio frequency receiving/transmitting antenna 30, and the radio chip 40 is further connected to the volume regulator 15, so that an FM radio signal of 64M-108MHz can be received, and a radio function is realized.

The BK4819 radio frequency chip can freely define the characteristics of radio frequency working frequency to realize the receiving of multiple frequency bands; on a hardware circuit, the bandwidths of the two groups of radio frequency receiving and transmitting channels are expanded to the maximum extent, so that the quality of radio frequency signals is improved. The receivable frequencies range from 100MHz-520MHz. The characteristic that the BK4819 radio frequency chip can receive and play the AM signal is utilized, and after the radio frequency is set to the aviation frequency band, the aviation channel signal can be normally played without increasing any hardware cost. In addition, the frequency measurement and frequency matching can be realized by utilizing the characteristic that the BK4819 radio frequency chip can measure the frequency without additional hardware cost.

The radio frequency chip 20 of the present embodiment is connected with the microphone 14 and the volume regulator 15, the speaker 17 is connected with the volume regulator 15 through the audio power amplifier 16, the talkback voice transmission is realized through the microphone 22, the radio frequency chip 20, the transmitting channel and the radio frequency receiving and transmitting antenna 30, and the talkback voice reception is realized through the radio frequency receiving and transmitting antenna 30, the receiving channel, the radio frequency chip 20, the volume regulator 15, the audio power amplifier 16 and the speaker 17. The volume regulator 15 changes the volume of the sound played by the speaker 17 by changing the amplitude of the signal fed to the audio amplifier.

In this embodiment, the array keyboard 12 adopts a 4×4 array, and is connected with the microprocessor 10 through a flexible flat cable, so that a user can conveniently select different menu settings and conveniently set working frequency points, and the flexible flat cable is used for connection and convenient disassembly. The array keyboard 12 is arranged on the array keyboard plate, the back side of the array keyboard plate is provided with a mounting groove, and the loudspeaker 17 is fixed in the mounting groove of the array keyboard plate through a weight and a screw, so that glue is not required, and the array keyboard is convenient to detach and replace.

In this embodiment, the m-shaped LED segment code screen 13 is welded on the motherboard of the microprocessor 10 and driven by a driving chip, the driving chip is connected with the microprocessor 10, and the driving chip adopts a TM1640 driving chip, and can edit some simple english menus through software design, so that compared with an 8-segment nixie tube display screen, the displayed characters are easier to identify, and no additional film is required to be added.

The interphone can charge a lithium battery block with the maximum voltage of 8.4V in a mode of boosting charging or charging by a seat through the body type C, and the lithium battery block stabilizes the voltage to 3.3V through a voltage stabilizing circuit and then supplies power for the whole interphone circuit.

While the basic principles and main features of the utility model and advantages of the utility model have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described in the foregoing description merely illustrate the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.

Claims

1. The utility model provides a LED section sign indicating number screen amateur intercom which characterized in that: the radio frequency chip adopts a BK4819 chip, the radio frequency receiving and transmitting antenna adopts a UV dual-band radio frequency antenna, the radio frequency chip and the array keyboard are respectively connected with the microprocessor, two paths of receiving channels and two paths of transmitting channels are connected between the radio frequency chip and the radio frequency receiving and transmitting antenna, and a radio channel is connected between the radio frequency chip and the radio frequency receiving and transmitting antenna; the Mi-shaped LED segment code screen is welded on a main board of the microprocessor and driven by a driving chip, the driving chip is connected with the microprocessor, and the driving chip adopts a TM1640 driving chip.

2. The LED segment code screen amateur intercom of claim 1, wherein: the array keyboard adopts a 4×4 array.

3. The LED segment code screen amateur intercom of claim 1, wherein: the array keyboard is connected with the microprocessor through a soft flat cable.

4. The LED segment code screen amateur intercom of claim 1, wherein: the interphone also comprises a microphone and a loudspeaker, wherein the microphone is connected with a radio frequency chip, the radio frequency chip is also connected with a volume regulator, and the volume regulator is connected with the loudspeaker through an audio power amplifier.

5. The LED segment code screen amateur intercom of claim 4, wherein: the array keyboard is arranged on the array keyboard plate, the back side of the array keyboard plate is provided with a mounting groove, and the loudspeaker is fixed in the mounting groove of the array keyboard plate through a weight and a screw.