CN205213012U - A car bluetooth headset - Google Patents

Abstract

The utility model discloses an on-vehicle bluetooth headset, including bluetooth headset, microphone, EEPROM memory, bluetooth power management circuit, the interface charges, answer/hang up phone switch and audio output interface, the microphone is connected with bluetooth main chip electricity, EEPROM memory is connected with bluetooth main chip both-way electricity, bluetooth power management circuit is connected with bluetooth main chip and battery electricity respectively, bluetooth main chip is connected with bluetooth DAC circuit electricity, bluetooth DAC circuit is connected with the speaker electricity, bluetooth power management circuit, bluetooth main chip and bluetooth DAC circuit all are connected with switch A electricity, the interface that charges, answer/hang up phone switch and audio output interface and all are connected with switch B electricity. When the vehicle-mounted Bluetooth headset is used by a user, the headset does not need to be worn on the ears all day long, and hands-free use and private use modes can be achieved, so that unseen comfortable experience is really brought to the user.

Description

A car bluetooth headset

technical field

The utility model belongs to the technical field of earphones, in particular to a vehicle-mounted bluetooth earphone.

Background technique

Bluetooth headset is to apply Bluetooth technology to hands-free headsets, so that users can avoid annoying wires and talk easily in various ways. Since the advent of Bluetooth headsets, it has been a good tool for mobile business families to improve efficiency. Bluetooth is a low-cost, high-capacity, short-range wireless communication specification. In 1995, Ericsson first proposed the concept of Bluetooth. The Bluetooth specification works in the microwave frequency band, the transmission rate is 1M bytes per second, and the maximum transmission distance is 10 meters. By increasing the transmission power, it can reach 100 meters. Bluetooth technology is open to the world and has good compatibility on a global scale. The whole world can be integrated through a low-cost invisible Bluetooth network. The mainstream bluetooth earphones in the market can only be directly hung on the ears to answer calls and listen to music, but after a long time, ear pain and discomfort have been bothering users; the mainstream bluetooth earphones in the market are only They can make private conversations and listen to music privately, but they cannot be converted into audio systems and hands-free systems through external interfaces, and they are not easy to place when placed, and the probability of losing them is greatly increased; the mainstream Bluetooth headsets in the market, when not in use When it is used, it is hung on the ear all the time, which increases the sense of restraint of the user, and greatly reduces the convenience of the user.

Utility model content

The purpose of this utility model is to provide a vehicle-mounted bluetooth earphone to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions: a vehicle-mounted Bluetooth headset, including a Bluetooth headset, a microphone, an EEPROM memory, a Bluetooth power management circuit, a charging interface, an answer/hang up switch and an audio output interface, the Bluetooth The earphone is electrically connected to the base through a PIN pin, the microphone is electrically connected to the Bluetooth main chip, the EEPROM memory is electrically connected to the Bluetooth main chip in two directions, and the Bluetooth power management circuit is electrically connected to the Bluetooth main chip and the battery respectively. The main chip is electrically connected to the Bluetooth DAC circuit, the Bluetooth DAC circuit is electrically connected to the speaker, the Bluetooth power management circuit, the Bluetooth main chip and the Bluetooth DAC circuit are all electrically connected to the switch A, and the charging interface, answering/hanging up the phone Both the switch and the audio output interface are electrically connected to the switch B.

Preferably, both the switch A and the switch B are provided with 6 electrical connection ports.

The technical effects and advantages of the utility model: the car bluetooth earphone adds a base on the traditional earphone, the earphone and the base are electrically connected, and an audio output interface is designed on the base, and the connecting port can be directly connected to the car's Speaker system & home speaker system to get the headphone system to become a real bluetooth speaker hands-free system and at the same time when there is a private call, just pick up the earphone, the system will become a set of ordinary bluetooth earphones system; this utility model can really solve the problem that when the user uses this type of product, the earphone should not be worn on the ear all day long, and at the same time, the mode of hands-free use and private use can be used, thereby truly bringing users Comfort like never before.

Description of drawings

Figure 1 is a schematic diagram of the circuit connection of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The utility model provides a vehicle-mounted bluetooth headset as shown in Figure 1, comprising a bluetooth headset, a microphone, an EEPROM memory, a bluetooth power management circuit, a charging interface, an answer/hang up switch and an audio output interface, the bluetooth headset and The base is electrically connected through a PIN pin, the microphone is electrically connected to the Bluetooth main chip, the EEPROM memory is electrically connected to the Bluetooth main chip in two directions, the Bluetooth power management circuit is electrically connected to the Bluetooth main chip and the battery, and the Bluetooth main chip It is electrically connected to the Bluetooth DAC circuit, the Bluetooth DAC circuit is electrically connected to the speaker, the Bluetooth power management circuit, the Bluetooth main chip and the Bluetooth DAC circuit are all electrically connected to the switch A, the charging interface, the answer/hang up switch and The audio output interfaces are all electrically connected to the switch B, and both the switch A and the switch B are provided with 6 electrical connection ports.

Working principle: The Bluetooth headset is evolved on the basis of the traditional Bluetooth headset. A base is added on the basis of the traditional call Bluetooth headset. -1PIN, charging negative pole connection ---1PIN, lift the earphone to answer the call & put the earphone into the base to hang up the call ----2PIN, earphone audio output base ---2PIN), and there is a USB interface between the base and the outside (external connection Charging power interface), there is a 3.5mm audio output interface between the base and the external speaker.

When the traditional Bluetooth headset is connected to the paired host via Bluetooth (the headset is placed in the base), when the host has a phone call, the user picks up the headset from the base, and the Bluetooth headset passes through the Bluetooth protocol through the trigger circuit between the headset and the PIN pin of the base. To trigger the host to answer the call, since the host and the Bluetooth headset are already connected by Bluetooth, at this time, the Bluetooth headset can be used to achieve the call effect; Trigger the circuit to trigger the Bluetooth headset to send an on-hook command to the host to achieve the purpose of on-hook.

When the traditional Bluetooth headset is connected to the paired host via Bluetooth (the headset is put into the base), the 3.5mm audio output interface on the base is electrically connected to the LINE-IN terminal of the external speaker, and the USB interface on the base is electrically connected to the external charging power supply. At this time, while the external power supply will charge the Bluetooth headset through the base, the music played by the host will be transmitted to the Bluetooth headset through the Bluetooth A2DP protocol, and then transmitted to the base through the 2PIN connection between the Bluetooth headset and the base, and then transmitted to the base by the base. The 3.5mm audio output interface is transmitted to the external speaker to achieve the purpose of Bluetooth audio. Similarly, if the host has a call at this time, press the answer button of the Bluetooth headset, and the system will instantly become a Bluetooth hands-free system. For privacy, the bluetooth earphone is lifted from the base, the bluetooth earphone system is convenient for the user's actual experience purpose, and greatly facilitates the life of the user.

When the Bluetooth headset is not in use, put the Bluetooth headset into the base. At this time, the power terminal of the base is electrically connected to the external power supply, and the charging connection 2PIN between the base and the headset is passed through the power management circuit inside the base. The Bluetooth headset achieves the purpose of charging.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present utility model.

Claims (2)

1. A vehicle-mounted bluetooth earphone, comprising bluetooth earphone, microphone, EEPROM memory, bluetooth power management circuit, charging interface, answering/hanging up switch and audio frequency output interface, it is characterized in that: described bluetooth earphone and base are connected by PIN pin connected, the microphone is electrically connected to the Bluetooth main chip, the EEPROM memory is electrically connected to the Bluetooth main chip in two directions, the Bluetooth power management circuit is electrically connected to the Bluetooth main chip and the battery, and the Bluetooth main chip is electrically connected to the Bluetooth DAC circuit. connected, the bluetooth DAC circuit is electrically connected to the speaker, the bluetooth power management circuit, the bluetooth main chip and the bluetooth DAC circuit are all electrically connected to the switch A, the charging interface, the answer/hang up switch and the audio output interface are all connected to the Switch B is electrically connected. 2. A vehicle bluetooth headset according to claim 1, characterized in that: said switch A and switch B are both provided with 6 electrical connection ports.