CN219018812U

CN219018812U - Interphone convenient for adjusting PTT backlight

Info

Publication number: CN219018812U
Application number: CN202223178158.7U
Authority: CN
Inventors: 陈日清
Original assignee: Quanzhou Iradio Electronics Co ltd
Current assignee: Quanzhou Iradio Electronics Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-12
Anticipated expiration: 2032-11-30

Abstract

The utility model relates to an interphone convenient for adjusting PTT backlight, which comprises a shell and a PCB (printed circuit board) arranged in the shell, wherein a microprocessor, a PTT key circuit electrically connected with the microprocessor and a backlight driving circuit are arranged on the PCB, the PTT key circuit is connected with a membrane switch controlled by a PTT key, the PTT key is arranged on the side surface or the front surface of the shell, and the backlight driving circuit is connected with RGB light emitting diodes which are arranged correspondingly and adjacently to the PTT key. When the utility model receives standby waiting, the RGB light-emitting diode is controlled by the software programming of the microprocessor to display various customized gradient colors, the required colors can be customized by software upgrading according to the requirements of customers, and the personal design is also beneficial to flexible production.

Description

Interphone convenient for adjusting PTT backlight

Technical Field

The utility model relates to the technical field of interphones, in particular to an interphone convenient for adjusting PTT backlight.

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 conventional PTT key-belt backlight interphone generally uses one or two fixed colors for display, has single color and no characteristics, does not have gradual change colors, cannot meet the personalized requirements of the current clients, and has the problems of high production cost, inflexible production and the like because enterprises need to change the materials of the products again if the products need to change the colors.

Disclosure of Invention

The utility model aims to provide an interphone which is convenient for adjusting PTT backlight.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:

the utility model provides an intercom convenient to adjust PTT is shaded, includes the casing and sets up the PCB board in the casing inside, be equipped with microprocessor and PTT button circuit and the drive circuit that is shaded that is connected with microprocessor electricity on the PCB board, PTT button circuit is connected with by PTT button control's membrane switch and PTT button in casing side or front, drive circuit is shaded and is connected with RGB emitting diode and PTT button are corresponding and the adjacent setting.

Preferably, the PTT key comprises a key board and light guide rings fixedly connected to the periphery of the key board, and the light guide rings are made of transparent materials.

Preferably, anti-skid patterns are uniformly distributed on the key board.

Preferably, a dome sheet is also arranged between the PTT key and the membrane switch.

Preferably, the backlight driving circuits are provided with at least one group, and each backlight driving circuit is respectively connected with at least 1 RGB light emitting diode.

Preferably, the RGB light emitting diodes are uniformly distributed along the PTT key.

Preferably, the backlight driving circuit includes a connector connected to the RGB light emitting diode, a pin 1 and a pin 4 of the connector are grounded, a pin 2 of the connector is connected to a power supply through a first resistor, a pin 3 of the connector is connected to a drain D of the MOS transistor, a source S of the MOS transistor is grounded, a gate G of the MOS transistor is connected to the microprocessor, and a gate G of the MOS transistor is grounded after being connected to a second resistor.

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

when the interphone is transmitted, a signal of the transmitter is transmitted to the radio frequency chip to be modulated into a radio frequency signal, the radio frequency signal is amplified by the transmitting channel and then transmitted to the radio frequency receiving antenna, and when the signal is received, an audio signal demodulated by the radio frequency chip is transmitted to the audio power amplifier through the volume regulator to be played, and meanwhile, the RGB light-emitting diode is controlled to display the color represented by the received signal; when the standby waiting is received, the RGB light-emitting diode is controlled by the software programming of the microprocessor to display various customized gradient colors, the required colors can be customized by software upgrading according to the requirements of customers, and the personal design is also beneficial to flexible production.

Drawings

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

Fig. 2 is a schematic structural diagram of an intercom of the present utility model.

FIG. 3 is a schematic diagram of a backlight driving circuit according to 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. 1-2, this embodiment provides an intercom convenient for adjusting PTT backlight, which includes a casing 100 and a PCB board disposed inside the casing 100, wherein a microprocessor 10, a PTT key circuit electrically connected with the microprocessor 10, and a backlight driving circuit are disposed on the PCB board, the microprocessor 10 may employ STM32F405RG, and the PTT key circuit employs conventional circuits employed in the existing intercom.

The interphone further comprises a radio frequency chip 20, a radio frequency receiving and transmitting antenna 30, a microphone 21, a volume regulator 22, an audio power amplifier 23 and a loudspeaker 4, wherein the radio frequency chip 20 adopts a BK4819 chip and is connected with the microprocessor 10, the microphone 21 and the volume regulator 22 are respectively connected with the radio frequency chip 20, the loudspeaker 24 is connected with the volume regulator 22 through the audio power amplifier 23, and a radio frequency receiving and transmitting circuit is connected between the radio frequency chip 20 and the radio frequency receiving and transmitting antenna 30. The radio frequency transceiver circuit is a conventional circuit of the interphone, and is not described herein. The PTT key circuit of the embodiment is connected with a membrane switch controlled by a PTT key, and the PTT key 101 is arranged on the side surface of the shell; in other examples, PTT key 101 may be disposed on the front of chassis 100. When in the intercom transmitting mode, the PTT button 101 is pressed and the transmitter 21 is talking, the signal of the transmitter 21 is modulated into a radio frequency signal by the radio frequency chip 20, and then the radio frequency signal is sent to the radio frequency receiving and transmitting antenna 30 through the transmitting channel of the radio frequency receiving and transmitting circuit, so that the transmission can be completed. After receiving the signal input by the rf transceiver antenna 30, the audio signal demodulated by the rf chip 20 is sent to the volume regulator 22 and the audio power amplifier 23 through the receiving channel of the rf transceiver circuit, and the speaker is turned on to play sound 24, and the volume of the sound played by the speaker 24 is changed by changing the amplitude of the signal sent to the audio power amplifier through the volume regulator 22.

In this embodiment, the PTT key 101 includes a key board and a light guide ring 103 fixedly connected around the key board, anti-skidding patterns are uniformly distributed on the key board, the light guide ring 103 is made of transparent material, for example, transparent silica gel material, and the light guide ring 103 and the casing are hermetically arranged. Further, a dome is further arranged between the PTT key 101 and the membrane switch, and the function is realized by indirectly pressing the dome to connect a circuit by pressing the PTT key 101, so that the interphone can talk over.

In this embodiment, the backlight driving circuits are provided with 4 groups, each backlight driving circuit is connected with 1 RGB light emitting diode 102, the RGB light emitting diodes 102 are corresponding to and are adjacent to the PTT key 101, and the RGB light emitting diodes 102 are uniformly distributed along the PTT key 101. In other examples, 2 RGB light emitting diodes 102 are connected to each backlight driving circuit. Three LED chips which are respectively used for emitting red light, green light and blue light are respectively packaged in the same RGB light-emitting diode, the three red LED chips, the green LED chips and the blue LED chips are connected through leads, the used PTT key 101 is backlit to be the RGB light-emitting diode 102, the RGB light-emitting diode is controlled to display various gradient colors through software programming of the microprocessor 10, the required colors can be customized through software upgrading according to the requirements of customers, and the individual design is also beneficial to flexible production.

The backlight driving circuit in this embodiment includes a connector connected to the RGB light emitting diode 102, a pin 1 and a pin 4 of the connector are grounded, a pin 2 of the connector is connected to a power supply through a first resistor, a pin 3 of the connector is connected to a drain D of a MOS transistor, a source S of the MOS transistor is grounded, a gate G of the MOS transistor is connected to the microprocessor 10, and a gate G of the MOS transistor is grounded after being connected to a second resistor, as shown in fig. 3.

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 an intercom convenient to adjust PTT is shaded, includes the casing and sets up the PCB board in the casing is inside, be equipped with microprocessor and PTT key circuit and the drive circuit that is shaded with microprocessor electricity on the PCB board, its characterized in that: the PTT key circuit is connected with a membrane switch controlled by the PTT key and the PTT key is arranged on the side surface or the front surface of the shell, the backlight driving circuit is connected with RGB light emitting diodes, and the RGB light emitting diodes are arranged corresponding to and adjacent to the PTT key.

2. The interphone facilitating adjustment of PTT backlight according to claim 1, characterized in that: the PTT key comprises a key board and light guide rings fixedly connected to the periphery of the key board, and the light guide rings are made of transparent materials.

3. The interphone facilitating adjustment of PTT backlight according to claim 2, characterized in that: and anti-skid patterns are uniformly distributed on the key board.

4. The interphone facilitating adjustment of PTT backlight according to claim 1, characterized in that: and a dome sheet is arranged between the PTT key and the membrane switch.

5. The interphone facilitating adjustment of PTT backlight according to claim 1, characterized in that: the backlight driving circuits are provided with at least one group, and each backlight driving circuit is respectively connected with at least 1 RGB light emitting diode.

6. The interphone facilitating adjustment of a PTT backlight as recited in claim 5, wherein: the RGB light emitting diodes are uniformly distributed along the PTT key.

7. The interphone facilitating adjustment of PTT backlight according to claim 1, characterized in that: the backlight driving circuit comprises a connector connected with the RGB light emitting diode, a pin 1 and a pin 4 of the connector are grounded, a pin 2 of the connector is connected with a power supply through a first resistor, a pin 3 of the connector is connected with a drain electrode D of the MOS tube, a source electrode S of the MOS tube is grounded, a grid electrode G of the MOS tube is connected with the microprocessor, and a grid electrode G of the MOS tube is grounded after being connected with a second resistor.