CN213990655U - Bluetooth device and car suitable for car machine - Google Patents
Bluetooth device and car suitable for car machine Download PDFInfo
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- CN213990655U CN213990655U CN202023246405.3U CN202023246405U CN213990655U CN 213990655 U CN213990655 U CN 213990655U CN 202023246405 U CN202023246405 U CN 202023246405U CN 213990655 U CN213990655 U CN 213990655U
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Abstract
The utility model provides a bluetooth device and car suitable for car machine, through with external bluetooth antenna and built-in bluetooth antenna integration in a bluetooth device, in different use scenes, can realize from transmitting the signal by built-in bluetooth antenna to transmitting the conversion of signal by built-in bluetooth antenna and external bluetooth antenna jointly through setting up the first circuit connector on the car machine mainboard, transmit bluetooth signal through external bluetooth antenna when the car machine has the closure metal casing, satisfy the user's demand for bluetooth signal intensity; and the Bluetooth module and the two Bluetooth antennas are connected through a circuit connector with lower cost, so that the production cost of the product is effectively reduced.
Description
Technical Field
The utility model relates to an on-vehicle multimedia technology field especially relates to a bluetooth device and car suitable for car machine.
Background
Bluetooth is a necessary function of a vehicle-mounted device (vehicle-mounted multimedia device), and a smart phone of a user can be connected with the vehicle-mounted device and can communicate with the vehicle-mounted device, so that information interaction between the smart phone and a vehicle is realized.
The existing Bluetooth antenna in the Bluetooth equipment has two forms; one is an external antenna (such as a rod antenna or a copper tube antenna) and is installed at an antenna socket on the back of a vehicle machine; one is a built-in antenna configuration, which is integrated on a vehicle circuit board (also called a board-mounted PCB antenna), typically an inverted F antenna, so that manufacturers of bluetooth devices in vehicles need to design and produce two hardware versions of bluetooth antennas. The existing bluetooth equipment in the car machine generally uses a built-in bluetooth antenna as an emission source of bluetooth signals, but in some practical application scenarios, for example, when the shell of the car machine is a closed metal shell, the shell can shield signals sent by the built-in bluetooth antenna, so that the strength of the bluetooth signals received by a user is low, and the use requirements cannot be met. In addition, the connection relationship between the bluetooth antenna and the bluetooth module is complex at present, and a sensor, a control unit and the like with higher production cost are required, so that the production cost of the bluetooth device is higher.
Therefore, when the car machine has a closed metal shell, the existing Bluetooth device cannot meet the use requirements of users, and the production cost of the Bluetooth device is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bluetooth device and car suitable for car machine for solve current bluetooth device when the car machine has closed metal casing, can't satisfy user's user demand, and the bluetooth device manufacturing cost is higher defect, realized from transmitting the signal by built-in bluetooth antenna to transmitting the conversion of signal by built-in bluetooth antenna and external bluetooth antenna jointly, when the car machine has closed metal casing, transmit the bluetooth signal through external bluetooth antenna, satisfy the user's demand for bluetooth signal intensity; and the Bluetooth module and the two Bluetooth antennas are connected through a circuit connector with lower cost, so that the production cost of the product is effectively reduced.
On one hand, the utility model provides a bluetooth device suitable for car machine, including external bluetooth antenna, first circuit connector, and built-in bluetooth antenna and bluetooth module that set up on the car machine mainboard;
the built-in Bluetooth antenna is connected with the Bluetooth module so that the Bluetooth module transmits signals through the built-in Bluetooth antenna;
when the external Bluetooth antenna is connected with the Bluetooth module through the first circuit connector, the Bluetooth module further transmits signals through the external Bluetooth antenna.
Furthermore, the built-in Bluetooth antenna is connected with the Bluetooth module through a second circuit connector;
wherein the second circuit connector comprises at least one resistor.
Further, the first circuit connector includes at least one resistor.
Further, the bluetooth device further includes a common pad;
the first circuit connector and the second circuit connector are welded on the common pad.
Furthermore, a common welding point, a first welding point and a second welding point are arranged on the common welding pad;
the first welding spot is connected with the external Bluetooth antenna, the second welding spot is connected with the internal Bluetooth antenna, and the public welding spot is connected with the Bluetooth module;
one end of the first circuit connector is connected with the first welding point, and the other end of the first circuit connector is connected with the common welding point;
one end of the second circuit connector is connected with the second welding point, and the other end of the second circuit connector is connected with the common welding point.
Further, the bluetooth device suitable for the car machine further comprises an antenna socket arranged on the car machine mainboard;
the antenna socket is connected with the first circuit connector so as to be connected with the Bluetooth module through the first circuit connector when the external Bluetooth antenna is inserted into the antenna socket.
Furthermore, the built-in Bluetooth antenna is an onboard inverted-F PCB antenna.
Furthermore, the external bluetooth antenna is a rod antenna or a copper tube antenna.
Further, the frequency of the bluetooth signal generated by the bluetooth module is 2.4 GHz.
On the other hand, the utility model provides a car, including the aforesaid a bluetooth device suitable for car machine.
The utility model provides a bluetooth device and car suitable for car machine, through with external bluetooth antenna and built-in bluetooth antenna integration in a bluetooth device, in different use scenes, can realize from transmitting the signal by built-in bluetooth antenna to transmitting the conversion of signal by built-in bluetooth antenna and external bluetooth antenna jointly through setting up the first circuit connector on the car machine mainboard, transmit bluetooth signal through external bluetooth antenna when the car machine has the closure metal casing, satisfy the user's demand for bluetooth signal intensity; and the Bluetooth module and the two Bluetooth antennas are connected through a circuit connector with lower cost, so that the production cost of the product is effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a conventional bluetooth device of a car machine with an external bluetooth antenna provided by the present invention;
fig. 2 is a schematic diagram of a conventional bluetooth device of a car machine with a built-in bluetooth antenna provided by the present invention;
fig. 3 is the utility model provides a bluetooth device's schematic structure diagram suitable for car machine.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
First, a bluetooth device of a conventional car machine will be described.
Fig. 1 is the utility model provides a current bluetooth device's of car machine with external bluetooth antenna schematic diagram, fig. 2 is the utility model provides a current bluetooth device's of car machine with built-in bluetooth antenna schematic diagram. Referring to fig. 1 and 2, due to different installation environments and other factors, a conventional vehicle-mounted device (i.e., a vehicle-mounted multimedia device) generally has two design schemes, one is an external bluetooth antenna and is installed at an antenna socket on the back of the vehicle-mounted device; the utility model provides a for built-in bluetooth antenna, integrated on the host computer circuit board of car machine. When the installation environment can cause stronger shielding to the signal of built-in bluetooth antenna, for example, when the car machine has adopted closure metal casing, can only choose for use the bluetooth device that only contains external bluetooth antenna, therefore the hardware staff of this car machine need design simultaneously and maintain two kinds of hardware versions, has increased the cost of design and maintenance.
The following is the utility model provides a bluetooth device suitable for car machine describes.
On one hand, the utility model provides a bluetooth device suitable for car machine, including external bluetooth antenna, first circuit connector, and built-in bluetooth antenna and bluetooth module that set up on the car machine mainboard;
the built-in Bluetooth antenna is connected with the Bluetooth module so that the Bluetooth module transmits signals through the built-in Bluetooth antenna;
when the external Bluetooth antenna is connected with the Bluetooth module through the first circuit connector, the Bluetooth module further transmits signals through the external Bluetooth antenna.
The built-in Bluetooth antenna is an antenna integrated on the vehicle mainboard, and the Bluetooth module transmits data through the built-in Bluetooth antenna under the default condition, namely when the first circuit connector is not installed on the vehicle mainboard, the Bluetooth module is only connected with the built-in Bluetooth antenna.
After the first circuit connector is installed on the vehicle mainboard, the first circuit connector is connected with the Bluetooth module, and the external Bluetooth antenna is connected into the Bluetooth device at the moment, so that the Bluetooth module can transmit Bluetooth signals through the external Bluetooth antenna and the internal Bluetooth antenna simultaneously.
The first circuit connector is used for connecting the external Bluetooth antenna and the Bluetooth module, transmitting a Bluetooth signal generated by the Bluetooth module to the external Bluetooth antenna, and transmitting the Bluetooth signal through the external Bluetooth antenna; the first circuit connector may be a resistor or a wire capable of transmitting signals, or other electrical components, which is not limited in this embodiment.
Furthermore, when the Bluetooth device is arranged in the vehicle machine, under the condition that conditions allow, namely if the shell of the vehicle machine is weak in signal shielding of the built-in Bluetooth antenna, and a Bluetooth signal sent by the built-in Bluetooth antenna in the Bluetooth device can meet the use requirement, the built-in Bluetooth antenna is preferentially used without inserting an external Bluetooth antenna, so that the cost is saved to the greatest extent; when the car machine needs to be cooled or fixed, the closed metal shell is adopted, the metal shell can shield the signal of the built-in Bluetooth antenna strongly, only the external Bluetooth antenna can be used, and the external Bluetooth antenna needs to be inserted at the moment so as to meet the requirement of a user on the Bluetooth signal intensity.
The utility model provides a bluetooth device suitable for car machine, through integrating external bluetooth antenna and built-in bluetooth antenna in a bluetooth device, in different use scenes, can realize from transmitting the signal by built-in bluetooth antenna to transmitting the conversion of signal by built-in bluetooth antenna and external bluetooth antenna jointly through setting up the first circuit connector on the car machine mainboard, transmit bluetooth signal through external bluetooth antenna when the car machine has the closure metal casing, satisfy the user's demand for bluetooth signal intensity; and the Bluetooth module and the two Bluetooth antennas are connected through a circuit connector with lower cost, so that the production cost of the product is effectively reduced.
Further, on the basis of the above embodiment, the built-in bluetooth antenna is connected to the bluetooth module through a second circuit connector;
wherein the second circuit connector comprises at least one resistor.
The built-in Bluetooth antenna is an antenna integrated on the vehicle mainboard and is connected with the Bluetooth module through a second circuit connector; the second circuit connector is used for connecting the built-in Bluetooth antenna and the Bluetooth module, transmitting the Bluetooth signal generated by the Bluetooth module to the built-in Bluetooth antenna, and transmitting and emitting the Bluetooth signal through the Bluetooth antenna.
Specifically, one or more resistors may be used as the second circuit connector, and the specific number may be determined according to the need of stably transmitting the bluetooth signal, which is not particularly limited by this embodiment.
In this embodiment, the bluetooth module and the built-in bluetooth antenna are connected through the second circuit connector, so that the built-in bluetooth antenna can complete transmission of bluetooth signals, and the cost of hardware development and product production is reduced.
Further, on the basis of the above embodiment, the first circuit connector includes at least one resistor.
Specifically, a resistor may be used as a circuit connector to connect the bluetooth module and the bluetooth antenna. The resistor is used as a circuit connector, and a Bluetooth signal generated by the Bluetooth module can be transmitted; in addition, the resistor is used as a circuit connector to limit the current in the Bluetooth device, so that the circuit is protected; the first circuit connector and the second circuit connector may use the same circuit connector elements, or may use different circuit connector elements, which is not limited in this embodiment.
The resistance values of the resistors used by the first circuit connector and the second circuit connector can be set manually, so as to meet the requirements of the Bluetooth device.
In this embodiment, the resistor is used as a circuit connector, so that transmission of bluetooth signals can be realized, and a circuit can be protected; due to the low price of the resistance element, the production cost of the product can be reduced to a certain extent.
Further, on the basis of the above embodiment, the bluetooth device further includes a common pad;
the first circuit connector and the second circuit connector are welded on the common pad.
Designing a common bonding pad on the vehicle mainboard, and welding a second circuit connector on the common bonding pad; when the second circuit connector is a resistor, two ends of the resistor are welded on the common welding disc so as to connect the Bluetooth module and the path of the built-in Bluetooth antenna.
When the car machine needs to dissipate heat or be fixed, a closed metal shell is adopted, the metal shell can shield signals of the built-in Bluetooth antenna strongly, and only the external Bluetooth antenna can be used, the resistor serving as a first circuit connector is welded on the common bonding pad to connect a Bluetooth module and a path of the external Bluetooth antenna.
In this embodiment, through the public pad on the car machine mainboard, communicate built-in bluetooth antenna route and external bluetooth antenna route, can strengthen the reliability that the component is connected, can normally work under the more abominable condition of running state of vehicle, improved adaptability under different application scenarios.
Further, on the basis of the above embodiment, the common pad is provided with a common solder joint, a first solder joint and a second solder joint;
the first welding spot is connected with the external Bluetooth antenna, the second welding spot is connected with the internal Bluetooth antenna, and the public welding spot is connected with the Bluetooth module;
one end of the first circuit connector is connected with the first welding point, and the other end of the first circuit connector is connected with the common welding point;
one end of the second circuit connector is connected with the second welding point, and the other end of the second circuit connector is connected with the common welding point.
In the bluetooth device, when too many wires are routed in the circuit that sends bluetooth signal, will arouse the antenna effect of electrical component, and unnecessary the routing in the circuit can radiate away bluetooth signal promptly, brings signal loss for the transmission of bluetooth signal, therefore, should reduce the line quantity of walking of circuit as far as possible when designing the circuit.
In the common bonding pad, one end of the first circuit connector and one end of the second circuit connector are both connected to a common welding point, namely the first circuit connector and the second circuit connector are connected with the Bluetooth module through the same welding point; the other end of the first circuit connector and the other end of the second connecting circuit are connected to different welding points, so that the number of lines in the circuit can be reduced, and the antenna effect in the Bluetooth device can be reduced.
In this embodiment, one end of the first circuit connector and one end of the second circuit connector are connected to the common pad, so that the antenna effect in the circuit can be significantly reduced, and the signal loss of the bluetooth signal can be reduced.
Further, on the basis of the above embodiment, the bluetooth device for the vehicle machine further includes an antenna socket disposed on the vehicle machine motherboard;
the antenna socket is connected with the first circuit connector so as to be connected with the Bluetooth module through the first circuit connector when the external Bluetooth antenna is inserted into the antenna socket.
When the Bluetooth signal that built-in Bluetooth antenna sent can satisfy the use in the bluetooth device, do not set up first circuit connector in the car machine mainboard, do not set up external Bluetooth antenna promptly. When the Bluetooth signal sent by the built-in Bluetooth antenna cannot meet the use requirement, the external Bluetooth antenna needs to be arranged on the vehicle machine mainboard; the vehicle-mounted device comprises a vehicle-mounted device mainboard, wherein an antenna socket is arranged on the vehicle-mounted device mainboard, an external Bluetooth antenna is inserted into the antenna socket and can be fixed, and a first circuit connector can be connected with the external Bluetooth antenna at the moment so as to stably transmit Bluetooth signals through the external Bluetooth antenna.
In this embodiment, through the fixed external bluetooth antenna of antenna socket, can ensure external bluetooth antenna stability at the vehicle in-process of traveling, realize bluetooth signal's stable output, optimized user's use and experienced.
Further, on the basis of the above embodiment, the built-in bluetooth antenna is an on-board inverted F PCB antenna.
Use the board to carry the type of falling F PCB antenna as built-in bluetooth antenna in this embodiment, through integrated on the mainboard of car machine, can make the bluetooth device not have external bluetooth antenna's the condition under, acquiesce to use this board to carry type of falling F PCB antenna transmission signal to accomplish the output of bluetooth signal under the more condition of saving the cost.
Further, on the basis of the above embodiment, the external bluetooth antenna is a rod antenna or a copper tube antenna.
In this embodiment, use bar antenna or copper pipe antenna as external bluetooth antenna, can use to fixed this external bluetooth antenna of antenna socket, have connection structure simple, low cost's advantage.
Further, on the basis of the above embodiment, the frequency of the bluetooth signal generated by the bluetooth module is 2.4 GHz.
In the embodiment, the frequency of the Bluetooth signal is 2.4GHz, and the Bluetooth signal has the characteristics of strong anti-jamming capability and stable transmission; through reducing circuit in the bluetooth device and walk line quantity, further improved bluetooth signal's stability.
Fig. 3 is the utility model provides a bluetooth device's schematic structure diagram suitable for car machine. Referring to fig. 3, the bluetooth apparatus for a vehicle machine includes: the main control part, the bluetooth part, antenna socket, public pad, resistance R1, resistance R2, built-in bluetooth antenna and external bluetooth antenna, wherein:
the built-in Bluetooth antenna and the external Bluetooth antenna are used for transmitting signals; the antenna socket is used for plugging and fixing the external Bluetooth antenna, and the external Bluetooth antenna after being plugged can be connected with the Bluetooth module; the common pad is used for welding a resistor R1 (namely, a second circuit connector) and a resistor R2 (namely, a first circuit connector); the main control part is used for controlling the Bluetooth part (namely the Bluetooth module) to send out Bluetooth signals.
Specifically, the vehicle mainboard main control part and the Bluetooth part are consistent with the existing circuit, and the main control part is directly connected with the Bluetooth part;
the Bluetooth antenna part comprises an internal Bluetooth antenna, an external Bluetooth antenna and an antenna socket;
the antenna selection switching circuit part comprises a built-in antenna and an external antenna which are correspondingly wired, and a selection switching circuit is also included, so that the built-in and external antennas of the radio frequency Bluetooth working at 2.4GHz can normally work, and the requirements for the layout and wiring of a single board design PCB of a vehicle mainboard in the embodiment are as follows:
the circuit switching part needs to reduce signal bifurcation as much as possible, and aims to reduce signal loss caused by radiation of signals due to antenna effect caused by redundant wiring of each path as much as possible; preferably, a common pad circuit design method is adopted during design: two path signals are respectively output to different paths at the bifurcation by adopting a common bonding pad through two resistors, so that any redundant bifurcation tail wire does not exist;
when the application scene adopts the built-in antenna, the single board is only welded with the resistor R1 corresponding to the built-in antenna channel when leaving the factory (meanwhile, the resistor R2 is attached in a vacant way); when the external antenna is needed, the corresponding resistor R2 is welded when the single board leaves the factory.
The selection principle of the internal Bluetooth antenna and the external Bluetooth antenna is that the internal antenna is preferentially selected under the condition that the condition allows, so that the cost is saved to the utmost extent, namely, when the shielding of the equipment shell to the wireless Bluetooth signal is weak, the internal antenna can be selected under the condition of meeting the antenna radiation, namely, a first circuit connector and the external Bluetooth antenna are not required to be arranged; when the whole equipment adopts a closed metal shell due to heat dissipation or fixation factors, only an external antenna can be selected, namely a first circuit connector needs to be arranged, and the external Bluetooth antenna is inserted into an antenna socket.
On the other hand, this embodiment provides a car, includes foretell a bluetooth device suitable for car machine.
The embodiment provides a vehicle, which comprises a Bluetooth device suitable for a vehicle machine, wherein an external Bluetooth antenna and an internal Bluetooth antenna are integrated in one Bluetooth device, in different use scenes, a first circuit connector is arranged on a vehicle machine mainboard to realize the conversion from the transmission of a signal by the internal Bluetooth antenna to the transmission of a signal by the internal Bluetooth antenna and the external Bluetooth antenna together, and when a closed metal shell exists in the vehicle machine, a Bluetooth signal is transmitted by the external Bluetooth antenna to meet the requirement of a user on the strength of the Bluetooth signal; and the Bluetooth module and the two Bluetooth antennas are connected through a circuit connector with lower cost, so that the production cost of the product is effectively reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A Bluetooth device suitable for a vehicle machine is characterized by comprising an external Bluetooth antenna, a first circuit connector, an internal Bluetooth antenna and a Bluetooth module, wherein the internal Bluetooth antenna and the Bluetooth module are arranged on a vehicle machine mainboard;
the built-in Bluetooth antenna is connected with the Bluetooth module so that the Bluetooth module transmits signals through the built-in Bluetooth antenna;
when the external Bluetooth antenna is connected with the Bluetooth module through the first circuit connector, the Bluetooth module further transmits signals through the external Bluetooth antenna.
2. The Bluetooth device applicable to the vehicle machine according to claim 1, wherein the built-in Bluetooth antenna is connected to the Bluetooth module through a second circuit connector;
wherein the second circuit connector comprises at least one resistor.
3. The bluetooth device for vehicle machine according to claim 1, wherein the first circuit connector comprises at least one resistor.
4. The bluetooth device suitable for the vehicle machine according to claim 2, wherein the bluetooth device further comprises a common pad;
the first circuit connector and the second circuit connector are welded on the common pad.
5. The Bluetooth device suitable for the vehicle machine as claimed in claim 4, wherein the common pad is provided with a common solder joint, a first solder joint and a second solder joint;
the first welding spot is connected with the external Bluetooth antenna, the second welding spot is connected with the internal Bluetooth antenna, and the public welding spot is connected with the Bluetooth module;
one end of the first circuit connector is connected with the first welding point, and the other end of the first circuit connector is connected with the common welding point;
one end of the second circuit connector is connected with the second welding point, and the other end of the second circuit connector is connected with the common welding point.
6. The Bluetooth device applicable to the vehicle machine according to claim 1, further comprising an antenna socket disposed on the vehicle machine motherboard;
the antenna socket is connected with the first circuit connector so as to be connected with the Bluetooth module through the first circuit connector when the external Bluetooth antenna is inserted into the antenna socket.
7. The Bluetooth device of claim 1, wherein the built-in Bluetooth antenna is an onboard inverted-F PCB antenna.
8. The Bluetooth device of claim 1, wherein the external Bluetooth antenna is a rod antenna or a copper tube antenna.
9. The bluetooth device of claim 1, wherein the frequency of the bluetooth signal generated by the bluetooth module is 2.4 GHz.
10. A vehicle comprising a bluetooth device adapted for use in a vehicle machine as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023246405.3U CN213990655U (en) | 2020-12-29 | 2020-12-29 | Bluetooth device and car suitable for car machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023246405.3U CN213990655U (en) | 2020-12-29 | 2020-12-29 | Bluetooth device and car suitable for car machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213990655U true CN213990655U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023246405.3U Active CN213990655U (en) | 2020-12-29 | 2020-12-29 | Bluetooth device and car suitable for car machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213990655U (en) |
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2020
- 2020-12-29 CN CN202023246405.3U patent/CN213990655U/en active Active
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