CN210518315U - Signal transceiving system and T-Box - Google Patents
Signal transceiving system and T-Box Download PDFInfo
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- CN210518315U CN210518315U CN201921664370.XU CN201921664370U CN210518315U CN 210518315 U CN210518315 U CN 210518315U CN 201921664370 U CN201921664370 U CN 201921664370U CN 210518315 U CN210518315 U CN 210518315U
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Abstract
The utility model discloses a signal receiving and dispatching system and T-Box belongs to the automotive electronics field. The signal receiving and transmitting system comprises an SoC, an MCU, a switch unit, a main antenna and a diversity antenna in the T-Box; the signal receiving and transmitting end of the SoC is connected with the first end of the switch unit, and the signal receiving end of the SoC is connected with the second end of the switch unit; the third end of the switch unit is connected with the main antenna, and the fourth end of the switch unit is connected with the diversity antenna; the control end of the MCU is connected with the control end of the switch unit; when the main antenna is not abnormal, the first end of the switch unit is communicated with the third end, and the second end of the switch unit is communicated with the fourth end; when the main antenna is abnormal, the first end of the switch unit is separated from the third end, the second end of the switch unit is separated from the fourth end, and the first end of the switch unit is communicated with the fourth end. Therefore, the SoC can normally send and receive signals no matter whether the main antenna is abnormal or not, and normal use of the T-Box is guaranteed.
Description
Technical Field
The utility model relates to an automotive electronics field especially relates to a signal transceiver system and T-Box.
Background
The vehicle networking system can realize vehicle data monitoring and remote control of vehicles. The vehicle networking system may include an IHU (information Head Unit), a T-Box (Telematics Box), a TSP (Telematics Service Provider) background, and a mobile phone application.
The T-Box can communicate with the TSP background through a wireless network. For example, the T-Box may send the collected vehicle data to the TSP back office, which may forward the received vehicle data to a monitoring platform or a cell phone application. The user can send the control command to the TSP background through the mobile phone application, the TSP background can send the received control command to the T-Box, and the T-Box can control the vehicle after receiving the control command.
Currently, the T-Box adopts a single-transmitting and double-receiving mode when transmitting and receiving signals. Specifically, the T-Box may transmit signals through a main antenna and receive signals through the main antenna and a diversity antenna. However, when the main antenna cannot be used due to damage or the like, the T-Box cannot transmit a signal, thereby affecting the normal use of the T-Box.
SUMMERY OF THE UTILITY MODEL
The utility model provides a signal receiving and dispatching system and T-Box can solve the unable normal use's of T-Box problem among the correlation technique. The technical scheme is as follows:
in one aspect, a signal transceiving system is provided, the signal transceiving system comprising: a SoC (system on Chip) in the T-Box, a Micro Control Unit (MCU) in the T-Box, a switching Unit, a main antenna, and a diversity antenna;
the signal receiving and transmitting end of the SoC is connected with the first end of the switch unit, and the signal receiving end of the SoC is connected with the second end of the switch unit; the third end of the switch unit is connected with the main antenna, and the fourth end of the switch unit is connected with the diversity antenna; the control end of the MCU is connected with the control end of the switch unit; the switching unit can communicate the first end of the switching unit with the third end of the switching unit under the control of the MCU when the main antenna is not abnormal, and communicate the second end of the switching unit with the fourth end of the switching unit; the switching unit can cut off the first end of the switching unit and the third end of the switching unit under the control of the MCU when the main antenna is abnormal, cut off the second end of the switching unit and the fourth end of the switching unit, and communicate the first end of the switching unit and the fourth end of the switching unit.
Optionally, the switching unit comprises a first switch and a second switch;
the first end of the first switch is connected with the signal transceiving end of the SoC, the control end of the first switch is connected with the first control end of the MCU, the first end of the second switch is connected with the signal receiving end of the SoC, and the control end of the second switch is connected with the second control end of the MCU; the second end of the first switch can be switched between the main antenna and the diversity antenna, and the second end of the second switch can be connected or disconnected with the diversity antenna.
Optionally, the switch unit comprises a first sub-switch unit and a second sub-switch unit;
a first end of the first sub-switch unit is connected with a signal transceiving end of the SoC, a second end of the first sub-switch unit is connected with the main antenna, a third end of the first sub-switch unit is connected with a third end of the second sub-switch unit, and a control end of the first sub-switch unit is connected with a first control end of the MCU; the first end of the second sub-switch unit is connected with the signal receiving end of the SoC, the second end of the second sub-switch unit is connected with the diversity antenna, and the control end of the second sub-switch unit is connected with the second control end of the MCU.
Optionally, the switch unit is an SKYA21003 radio frequency switch.
Optionally, the signal transceiving system further comprises a detection circuit;
the input end of the detection circuit is connected with the third end of the switch unit, and the output end of the detection circuit is connected with the input end of the MCU; the MCU detects the voltage of the third end of the switch unit through the detection circuit, and determines whether the main antenna is abnormal or not according to the detected voltage value.
Optionally, the detection circuit comprises: the circuit comprises an inductor, a diode, a first resistor, a second resistor and a capacitor; the first end of the inductor is connected with the third end of the switch unit, the second end of the inductor is connected with the negative electrode of the diode, the positive electrode of the diode is respectively connected with the first end of the first resistor and the first end of the second resistor, the second end of the first resistor is connected with the power supply, the second end of the second resistor and the first end of the capacitor are connected with the input end of the MCU, and the second end of the capacitor is grounded.
Optionally, a transmission end of the SoC is connected to a transmission end of the MCU, and the SoC detects whether the main antenna is abnormal, and transmits a detection result to the MCU.
Optionally, the diversity antenna is disposed on a printed circuit board for carrying electronic components in the T-Box.
Optionally, the main antenna is disposed on the top of the vehicle where the T-Box is located.
In another aspect, there is provided a T-Box, comprising: the system comprises a SoC, an MCU and a switch unit; the signal receiving and transmitting end of the SoC is connected with the first end of the switch unit, and the signal receiving end of the SoC is connected with the second end of the switch unit; the third end of the switch unit is connected with the main antenna, and the fourth end of the switch unit is connected with the diversity antenna; the control end of the MCU is connected with the control end of the switch unit; the switching unit can communicate the first end of the switching unit with the third end of the switching unit under the control of the MCU when the main antenna is not abnormal, and communicate the second end of the switching unit with the fourth end of the switching unit; the switching unit can cut off the first end of the switching unit and the third end of the switching unit under the control of the MCU when the main antenna is abnormal, cut off the second end of the switching unit and the fourth end of the switching unit, and communicate the first end of the switching unit and the fourth end of the switching unit.
The utility model provides a technical scheme can bring following beneficial effect at least:
switch units are connected between the SoC and the main antenna and between the SoC and the diversity antenna. When the main antenna is not abnormal, the MCU can connect the signal transceiving end of the SoC with the main antenna through the switch unit and connect the signal receiving end of the SoC with the diversity antenna, so that the SoC can receive and transmit signals through the main antenna and can receive signals through the diversity antenna. When the main antenna is abnormal, the MCU can connect the signal transceiving end of the SoC with the diversity antenna through the switch unit, so that the SoC can receive and transmit signals through the diversity antenna. Therefore, when the main antenna is not abnormal or is abnormal, the SoC can normally send and receive signals, and normal use of the T-Box where the SoC is located is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a first signal transceiving system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second signal transceiving system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a detection circuit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a third signal transceiving system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fourth signal transceiving system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a fifth signal transceiving system according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a sixth signal transceiving system according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a seventh signal transceiving system according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a switch unit according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a first T-Box according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a second T-Box according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a car networking system provided by the embodiment of the present invention.
Reference numerals:
1: SoC in T-Box, 1 a: signal transceiving terminal of SoC, 1 b: signal receiving terminal of SoC, 1 c: transmission terminal of SoC, 2: MCU, 2 a: control terminal of MCU, 2a1: first control terminal of MCU, 2a2: second control terminal of MCU, 2 b: input of MCU, 2 c: transmission terminal of MCU, 3: switch unit, 3 a: first end of switch unit, 3 b: second terminal of switch unit, 3 c: third terminal of switching unit, 3 d: fourth terminal of switching cell, 3 e: control terminal of switching unit, 4: main antenna, 5: diversity antenna, 6: first switch, 6 a: first end of first switch, 6 b: second terminal of the first switch, 6c control terminal of the first switch, 7: second switch, 7 a: first terminal of second switch, 7 b: second terminal of second switch, 7 c: control terminal of second switch, 8: first sub-switch unit, 8 a: first end of first sub-switching unit, 8 b: second terminal of first sub-switching unit, 8 c: third terminal of first sub-switching unit, 8 d: control terminal of first sub-switching unit, 9: second sub-switch unit, 9 a: first end of second sub-switching unit, 9 b: second terminal of second sub-switching unit, 9 c: third terminal of second sub-switching unit, 9 d: control terminal of second sub-switching unit, 10: detection circuit, 10 a: input terminal of detection circuit, 10 b: output terminal of detection circuit, L: inductance, D: diode, R1: first resistance, R2: second resistance, C: and (4) a capacitor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a signal transceiving system according to an embodiment of the present invention. Referring to fig. 1, the signal transceiving system may include: SoC1 in T-Box, MCU2 in T-Box, switch unit 3, main antenna 4 and diversity antenna 5.
The signal transceiving terminal 1a of the SoC1 is connected with the first terminal 3a of the switch unit 3, and the signal receiving terminal 1b of the SoC1 is connected with the second terminal 3b of the switch unit 3; the third end 3c of the switch unit 3 is connected with the main antenna 4, and the fourth end 3d of the switch unit 3 is connected with the diversity antenna 5; the control terminal 2a of the MCU2 is connected to the control terminal 3e of the switching unit 3.
When the main antenna 4 is not abnormal, the switching unit 3 can communicate the first end 3a of the switching unit 3 with the third end 3c of the switching unit 3 under the control of the MCU2, and communicate the second end 3b of the switching unit 3 with the fourth end 3d of the switching unit 3. The switch unit 3 can also disconnect the first end 3a of the switch unit 3 from the third end 3c of the switch unit 3, disconnect the second end 3b of the switch unit 3 from the fourth end 3d of the switch unit 3, and connect the first end 3a of the switch unit 3 with the fourth end 3d of the switch unit 3 under the control of the MCU2 when the main antenna 4 is abnormal.
Note that the SoC1 is also called a system on chip, and is a device used in the T-Box for transmitting and receiving signals. The signal receiving and transmitting terminal 1a of the SoC1 is used for receiving and transmitting signals, and the signal receiving terminal 1b of the SoC1 is used for receiving signals.
In addition, the MCU2 is a device in the T-Box for sending control signals to control other devices. The control terminal 2a of the MCU2 is used to control the switching unit 3.
Further, the switch unit 3 is used to connect the main antenna 4 to the signal transceiving terminal 1a of SoC1, or to disconnect the main antenna 4 from the signal transceiving terminal 1a of SoC 1. The switch unit 3 is also used to connect the diversity antenna 5 with the signal receiving terminal 1b of the SoC1, or to disconnect the diversity antenna 5 from the signal receiving terminal 1b of the SoC 1. The switch unit 3 is also used to connect the diversity antenna 5 with the signal transceiving terminal 1a of the SoC1, or to disconnect the diversity antenna 5 from the signal transceiving terminal 1a of the SoC 1.
Finally, the main antenna 4 and the diversity antenna 5 are both components capable of transmitting and receiving signals. When no abnormality occurs in the main antenna 4, the T-Box transmits and receives signals in a single-transmission and double-reception manner, that is, the main antenna 4 transmits and receives signals, and the diversity antenna 5 receives signals. The position of the main antenna 4 and the position of the diversity antenna 5 can be preset according to the use requirement. For example, the main antenna 4 may be disposed on the top of the vehicle in which the T-Box is located, in which case the main antenna 4 may be a shark fin antenna; the diversity antenna 5 may be provided on a printed circuit board carrying the electronics in the T-Box.
Specifically, in the signal transceiving system, when the main antenna 4 is not abnormal, the MCU2 may control the first terminal 3a of the switch unit 3 to communicate with the third terminal 3c of the switch unit 3 and control the second terminal 3b of the switch unit 3 to communicate with the fourth terminal 3d of the switch unit 3, so that the main antenna 4 is connected to the signal transceiving terminal 1a of the SoC1, and the diversity antenna 5 is connected to the signal receiving terminal 1b of the SoC 1. The SoC1 can now receive and transmit signals through the main antenna 4 and can receive signals through the diversity antenna 5. Then, the MCU2 can control the first terminal 3a of the switch unit 3 to be isolated from the third terminal 3c of the switch unit 3, the second terminal 3b of the switch unit 3 to be isolated from the fourth terminal 3d, and the first terminal 3a of the switch unit 3 to be communicated with the fourth terminal 3d when the main antenna 4 is abnormal, so as to connect the diversity antenna 5 to the signal transceiving terminal 1a of the SoC 1. The SoC1 can now receive and transmit signals through the diversity antenna 5. Therefore, when the main antenna 4 is not abnormal or is abnormal, the SoC1 can normally send and receive signals, and the normal use of the T-Box where the SoC1 is located is ensured.
In addition, the normal use of the T-Box can ensure the normal use of the car networking function. Moreover, when engineering debugging is required to be carried out on the vehicle, the vehicle networking function can still be tested under the condition that the main antenna 4 is abnormal, so that the debugging efficiency is ensured, and the development cost is saved.
The operation of the MCU2 in determining whether an abnormality has occurred in the main antenna 4 may be performed in a variety of ways. Two possible implementations are described below.
A first possible implementation: referring to fig. 2, the signal transceiving system may further include a detection circuit 10. An input end 10a of the detection circuit 10 is connected with the third end 3c of the switch unit 3, and an output end 10b of the detection circuit 10 is connected with an input end 2b of the MCU 2. The MCU2 can detect the voltage of the third terminal 3c of the switching unit 3 through the detection circuit 10 and determine whether the main antenna 4 is abnormal according to the detected voltage value.
It should be noted that the MCU2 may detect the voltage at the third terminal 3c of the switch unit 3 through the detection circuit 10 when the first terminal 3a of the switch unit 3 is connected to the third terminal 3c of the switch unit 3, and determine whether the main antenna 4 is abnormal according to the detected voltage value. Since it is explained that the SoC1 is transmitting and receiving signals using the main antenna 4 when the first terminal 3a of the switching unit 3 is communicated with the third terminal 3c of the switching unit 3, it is possible to detect whether or not an abnormality occurs in the main antenna 4 in real time based on the voltage of the third terminal 3c of the switching unit 3 connected to the main antenna 4 at this time.
The MCU2 determines whether the main antenna 4 is abnormal according to the detected voltage value, and determines that the main antenna 4 is abnormal when the detected voltage value is greater than or equal to the reference voltage value; when the detected voltage value is smaller than the reference voltage value, or when the detected voltage value is within the reference voltage range, it is determined that the abnormality has not occurred in the main antenna 4.
It should be noted that, both the reference voltage value and the reference voltage range can be preset according to the use requirement. For example, the reference voltage value may be 1.6V (volt), etc., and the reference voltage range may be 0.4-1.2V, etc.
In addition, when the detected voltage value is greater than or equal to the reference voltage value, it is interpreted that the voltage of the port connected to the main antenna 4 in the switch unit 3 is abnormal, and thus it can be determined that the main antenna 4 is abnormal.
Among them, referring to fig. 3, the detection circuit 10 may include: inductor L, diode D, first resistance R1A second resistor R2And a capacitance C. The first end of the inductor L is connected with the third end 3c of the switch unit 3, the second end of the inductor L is connected with the cathode of the diode D, and the anode of the diode D is respectively connected with the first resistor R1First terminal and second resistor R2Is connected to a first terminal of a first resistor R1Is connected to a power supply, a second resistor R2And a first terminal of the capacitor CThe ends are all connected with the input end 2b of the MCU2, and the second end of the capacitor C is grounded.
The inductor L is used to filter out electric waves, and the current flowing through the inductor L can be prevented from sudden change. The diode D is used for preventing reverse connection and protecting the circuit. A first resistor R1And a second resistor R2For controlling the voltage. The capacitor C is used to prevent interference pulses.
A second possible implementation: referring to fig. 4, a transmission terminal 1c of the SoC1 is connected to a transmission terminal 2c of the MCU2, and the SoC1 detects whether an abnormality occurs in the main antenna 4 and transmits the detection result to the MCU 2.
When the SoC1 detects whether the main antenna 4 is abnormal, it may be determined that the main antenna 4 is abnormal when the first terminal 3a of the switch unit 3 is communicated with the third terminal 3c of the switch unit 3 and when no signal is received from the signal transceiving terminal 1a of the SoC1 for the reference time period.
It should be noted that, when the first terminal 3a of the switch unit 3 is connected to the third terminal 3c of the switch unit 3, the signal transceiver terminal 1a of the SoC1 is connected to the main antenna 4, and the SoC1 is transmitting and receiving signals using the main antenna 4. Therefore, at this time, it is possible to detect whether or not the main antenna 4 is abnormal in real time based on the signal reception state of the signal transceiver terminal 1a of the SoC 1.
In addition, the reference duration can be set according to the use requirement, and the reference duration can be set to be larger. For example, the reference time period may be 10 minutes, etc.
Further, when the SoC1 does not receive a signal from the signal transceiving terminal 1a of the SoC1 for the reference duration, it means that the SoC1 has not received a signal through the main antenna 4 for a long time, and thus it can be determined that an abnormality occurs in the main antenna 4.
There are many possible configurations of the switch unit 3, and two possible configurations will be described below.
The first structure is as follows: referring to fig. 5, the switching unit 3 may include a first switch 6 and a second switch 7. The first terminal 6a of the first switch 6 is connected to the signal transceiving terminal 1a of the SoC1, and the control terminal 6c of the first switch 6 is connected to the first control terminal 2a of the MCU21A first terminal 7a of the second switch 7 is connected to a signal receiving terminal 1b of the SoC1The control terminal 7c of the two switches 7 and the second control terminal 2a of the MCU22And (4) connecting. The second terminal 6b of the first switch 6 can be switched between the main antenna 4 and the diversity antenna 5, and the second terminal 7b of the second switch 7 can be connected or disconnected from the diversity antenna 5.
Referring to fig. 6 and 7, the MCU2 can control the second terminal 6b of the first switch 6 to be connected to the main antenna 4 when no abnormality occurs in the main antenna 4, and control the second terminal 6b of the first switch 6 to be disconnected from the main antenna 4 and then connected to the diversity antenna 5 when an abnormality occurs in the main antenna 4. The MCU2 can also control the second terminal 7b of the second switch 7 to be connected to the diversity antenna 5 when no abnormality occurs in the main antenna 4, and control the second terminal 7b of the second switch 7 to be disconnected from the diversity antenna 5 when an abnormality occurs in the main antenna 4.
It should be noted that the type of the first switch 6 may be set according to the use requirement, and the first switch 6 may be a single-pole double-throw switch. The first terminal 6a of the first switch 6 is a stationary terminal, the second terminal 6b of the first switch 6 is a moving terminal, and the second terminal 6b of the first switch 6 is switchable between the main antenna 4 and the diversity antenna 5.
Furthermore, the type of the second switch 7 can be set according to the use requirement, and the second switch 7 can be a single-pole single-throw switch. The first end 7a of the second switch 7 is a fixed end, the second end 7b of the second switch 7 is a movable end, and the second end 7b of the second switch 7 can be connected or not connected with the diversity antenna 5.
The second structure is as follows: referring to fig. 8, the switching unit 3 includes a first sub-switching unit 8 and a second sub-switching unit 9. A first terminal 8a of the first sub-switch unit 8 is connected to the signal transceiving terminal 1a of the SoC1, a second terminal 8b of the first sub-switch unit 8 is connected to the main antenna 4, a third terminal 8c of the first sub-switch unit 8 is connected to a third terminal 9c of the second sub-switch unit 9, and a control terminal 8d of the first sub-switch unit 8 is connected to the first control terminal 2a of the MCU21Connecting; a first terminal 9a of the second sub-switch unit 9 is connected to the signal receiving terminal 1b of the SoC1, a second terminal 9b of the second sub-switch unit 9 is connected to the diversity antenna 5, and a control terminal 9d of the second sub-switch unit 9 is connected to the second control 2a of the MCU22And end connection.
The MCU2 can control the first end 8a of the first sub-switch unit 8 to communicate with the second end 8b of the first sub-switch unit 8 and control the first end 9a of the second sub-switch unit 9 to communicate with the second end 9b of the second sub-switch unit 9 when the main antenna 4 is not abnormal. The MCU2 can also control the first end 8a of the first sub-switch unit 8 to be isolated from the second end 8b of the first sub-switch unit 8, control the first end 8a of the first sub-switch unit 8 to be communicated with the third end 8c of the first sub-switch unit 8, control the second end 9b of the second sub-switch unit 9 to be isolated from the first end 9a of the second sub-switch unit 9, and control the second end 9b of the second sub-switch unit 9 to be communicated with the third end 9c of the second sub-switch unit 9 when the main antenna 4 is abnormal.
For example, the switch unit 3 may be an SKYA21003 radio frequency switch shown in fig. 9. u703 is the second sub-switch unit 9, u704 is the first sub-switch unit 8, u703 has pins RF1, RF2 and RF3, where RF1 is the second terminal 9b, RF2 is the third terminal 9c, RF3 is the first terminal 9a, u704 has pins RF1, RF2 and RF3, where RF1 is the first terminal 8a, RF2 is the third terminal 8c, and RF3 is the second terminal 8 b. Wherein A1 is the first control end 2a of MCU21A2 is the second control end 2a of MCU22(ii) a B1 is the power supply of the first sub-switch unit 8, B2 is the power supply of the second sub-switch unit 9; C1-C6 are capacitors for filtering; d1 is main antenna 4 interface, D2 is diversity antenna 5 interface; R1-R7 are resistors and are used for controlling voltage; L1-L4 are inductors for filtering; ZD1 is a zener diode that can perform overvoltage protection on main antenna 4, and ZD2 is a zener diode that can perform overvoltage protection on diversity antenna 5.
When no abnormality occurs in the main antenna 4, the MCU2 sends a control signal to the u704 through the a1 to control the RF1 in the u704 to communicate with the RF3, i.e., to connect the main antenna 4 to the signal transceiving terminal 1a of the SoC 1. The MCU2 also sends a control signal to u703 via a2 to control the RF1 in u703 to communicate with RF3, i.e., to connect the diversity antenna 5 to the signal receiving terminal 1b of SoC 1.
When the main antenna 4 is abnormal, the MCU2 sends a control signal to the u704 through the A1 to control the RF1 in the u704 to be isolated from the RF3, and control the RF1 in the u704 to be communicated with the RF 2. And the MCU2 sends a control signal to u703 through A2 to control RF1 in u703 to be isolated from RF3 and to control RF1 in u703 to be communicated with RF 2. In this way, the main antenna 4 is disconnected from the signal receiving/transmitting terminal 1a of the SoC1, and the diversity antenna 5 is disconnected from the signal receiving terminal 1b of the SoC1 and then connected to the signal receiving/transmitting terminal 1a of the SoC 1.
In the embodiment of the present invention, the switch units 3 are connected between the SoC1 and the main antenna 4 and between the SoC1 and the diversity antenna 5. When no abnormality occurs in the main antenna 4, since the MCU2 can connect the signal transceiving terminal 1a of the SoC1 with the main antenna 4 and the signal receiving terminal 1b of the SoC1 with the diversity antenna 5 through the switching unit 3, the SoC1 can receive and transmit signals through the main antenna 4 and can receive signals through the diversity antenna 5. When an abnormality occurs in the main antenna 4, since the MCU2 can connect the signal transceiving terminal 1a of the SoC1 with the diversity antenna 5 through the switching unit 3, the SoC1 can receive and transmit signals through the diversity antenna 5. Therefore, when the main antenna 4 is not abnormal or is abnormal, the SoC1 can normally send and receive signals, and normal use of the T-Box where the SoC1 is located is guaranteed.
Fig. 10 is a schematic structural diagram of a T-Box according to an embodiment of the present invention. Referring to fig. 10, the T-Box includes: SoC1, MCU2 and switch unit 3.
The signal transceiving terminal 1a of the SoC1 is connected with the first terminal 3a of the switch unit 3, and the signal receiving terminal of the SoC1 is connected with the second terminal 3b of the switch unit 3; the third end 3c of the switch unit 3 is connected with the main antenna 4, and the fourth end 3d of the switch unit 3 is connected with the diversity antenna 5; the control terminal 2a of the MCU2 is connected to the control terminal 3e of the switching unit 3.
When the main antenna 4 is not abnormal, the switching unit 3 can communicate the first end 3a of the switching unit 3 with the third end 3c of the switching unit 3 under the control of the MCU2, and communicate the second end 3b of the switching unit 3 with the fourth end 3d of the switching unit 3. When the main antenna 4 is abnormal, the switch unit 3 can cut off the first end 3a of the switch unit 3 and the third end 3c of the switch unit 3, cut off the second end 3b of the switch unit 3 and the fourth end 3d of the switch unit 3, and communicate the first end 3a of the switch unit 3 and the fourth end 3d of the switch unit 3 under the control of the MCU 2.
Note that the SoC1 is also called a system on chip, and is a device used in the T-Box for transmitting and receiving signals. The signal receiving and transmitting terminal 1a of the SoC1 is used for receiving and transmitting signals, and the signal receiving terminal 1b of the SoC1 is used for receiving signals.
In addition, the MCU2 is a device in the T-Box for sending control signals to control other devices. The control terminal 2a of the MCU2 is used to control the switching unit 3.
Further, the switch unit 3 is used to connect the main antenna 4 to the signal transceiving terminal 1a of SoC1, or to disconnect the main antenna 4 from the signal transceiving terminal 1a of SoC 1. The switch unit 3 is also used to connect the diversity antenna 5 with the signal receiving terminal 1b of the SoC1, or to disconnect the diversity antenna 5 from the signal receiving terminal 1b of the SoC 1. The switch unit 3 is also used to connect the diversity antenna 5 with the signal transceiving terminal 1a of the SoC1, or to disconnect the diversity antenna 5 from the signal transceiving terminal 1a of the SoC 1.
Finally, a T-Box may be connected to the main antenna 4 and the diversity antenna 5. The main antenna 4 and the diversity antenna 5 are both components capable of transmitting and receiving signals. When no abnormality occurs in the main antenna 4, the T-Box transmits and receives signals in a single-transmission and double-reception manner, that is, the main antenna 4 transmits and receives signals, and the diversity antenna 5 receives signals. The position of the main antenna 4 and the position of the diversity antenna 5 can be preset according to the use requirement. For example, the main antenna 4 may be disposed on the top of the vehicle in which the T-Box is located, in which case the main antenna 4 may be a shark fin antenna; the diversity antenna 5 may be disposed on a PCB (Printed Circuit Board) for carrying the electronic components in the T-Box.
Specifically, in the signal transceiving system, when the main antenna 4 is not abnormal, the MCU2 may control the first terminal 3a of the switch unit 3 to communicate with the third terminal 3c of the switch unit 3 and control the second terminal 3b of the switch unit 3 to communicate with the fourth terminal 3d of the switch unit 3, so that the main antenna 4 is connected to the signal transceiving terminal 1a of the SoC1, and the diversity antenna 5 is connected to the signal receiving terminal 1b of the SoC 1. The SoC1 can now receive and transmit signals through the main antenna 4 and can receive signals through the diversity antenna 5. Then, the MCU2 can control the first terminal 3a of the switch unit 3 to be isolated from the third terminal 3c of the switch unit 3, the second terminal 3b of the switch unit 3 to be isolated from the fourth terminal 3d, and the first terminal 3a of the switch unit 3 to be communicated with the fourth terminal 3d when the main antenna 4 is abnormal, so as to connect the diversity antenna 5 to the signal transceiving terminal 1a of the SoC 1. The SoC1 can now receive and transmit signals through the diversity antenna 5. Therefore, when the main antenna 4 is not abnormal or is abnormal, the SoC1 can normally send and receive signals, and the normal use of the T-Box where the SoC1 is located is ensured.
In addition, the normal use of the T-Box can ensure the normal use of the car networking function. Moreover, when engineering debugging is required to be carried out on the vehicle, the vehicle networking function can still be tested under the condition that the main antenna 4 is abnormal, so that the debugging efficiency is ensured, and the development cost is saved.
Wherein, the implementation manner that whether MCU2 confirms main antenna 4 takes place unusually is the same with the implementation manner that the above-mentioned fig. 2-4 embodiment provided, the embodiment of the utility model does not need to be repeated here.
The structure of the switch unit 3 is the same as the structure provided by the embodiments of fig. 5 to 9, and the embodiments of the present invention are not repeated herein.
Further, referring to fig. 11, the T-Box may further include a memory unit, BLE (bluetooth Low Energy), an ethernet interface, a vehicle interface, and a power supply.
It should be noted that the storage unit may store data in the T-Box. BLE is used to implement bluetooth functionality. The power supply may provide power for the operation of the T-Box.
Specifically, the SoC1 is used to transmit and receive signals through the main antenna 4 and the diversity antenna 5, and the SoC1 can store data in or retrieve data from the memory unit. The MCU2 is used to control other devices in the T-Box, and the MCU2 can send control signals to other devices in the vehicle other than the T-Box through the vehicle interface to control the other devices in the vehicle. BLE is used to implement bluetooth functionality. In addition, other devices in the vehicle, other than the T-Box, may be connected to the SoC1 through the ethernet interface to transmit or receive data through the SoC 1.
In the embodiment of the utility model, T-Box includes SoC1, MCU2 and switch unit 3, and when main antenna 4 did not take place unusually or took place unusually, SoC1 in T-Box all can normally send signal and received signal to can guarantee T-Box's normal use.
Fig. 12 is a schematic structural diagram of a car networking system provided by the embodiment of the present invention. Referring to fig. 11, the internet of vehicles system may include a T-Box as shown in any of fig. 10 and 11.
It should be noted that the vehicle networking system can implement vehicle data monitoring and remote control of the vehicle through the T-Box.
Specifically, the vehicle data monitoring function is mainly that the T-Box communicates with the TSP background through a wireless network, the T-Box transmits the collected vehicle data to the TSP background through the wireless network, and the TSP background forwards the data to a monitoring platform or a mobile phone for application. For example, the T-Box may collect vehicle data through a CAN (Controller Area Network) and a CIU (Control Interface Unit).
Remote control vehicle functions may include remote turn on of Air conditioning, remote drive lock, remote diagnostics, OTA (over the Air, wireless download), etc. For example, a user can send a control command to the TSP background through a mobile phone application, the TSP background sends the control command to the T-Box through a wireless network, and the T-Box can control the vehicle after receiving the control command.
For example, the T-Box, upon receiving the Control command, may transmit the Control command to a corresponding ECU (Electronic Control Unit) through the CAN for Control. The ECU may be an air conditioner, a PEPS (Passive entry and Start System), a BCM (Body Control Module), a BMS (Battery Management System), an EBCM (Electronic Brake Control Module), an OBC (On Board Charger), or the like.
In addition, IHU and ADAS (Advanced Driver Assistance Systems) in the Internet of vehicles system can also send data or receive data through the T-Box. Also, the T-Box may also collect sound signals through a microphone and emit sound signals through a speaker.
The embodiment of the utility model provides an in, the car networking system includes T-Box, and when main antenna 4 did not take place unusually or take place unusually, SoC1 among the T-Box all can normally send signal and received signal to can guarantee T-Box's normal use, and then can guarantee car networking system's normal use.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A signal transceiving system, the signal transceiving system comprising: the system-on-chip antenna comprises a system-on-chip (SoC) 1 in a remote information processor T-Box, a micro control unit (MCU 2) in the T-Box, a switch unit (3), a main antenna (4) and a diversity antenna (5);
a signal transceiving end (1a) of the SoC (1) is connected with a first end (3a) of the switch unit (3), and a signal receiving end (1b) of the SoC (1) is connected with a second end (3b) of the switch unit (3); the third end (3c) of the switch unit (3) is connected with the main antenna (4), and the fourth end (3d) of the switch unit (3) is connected with the diversity antenna (5); the control end (2a) of the MCU (2) is connected with the control end (3e) of the switch unit (3);
the switch unit (3) can communicate a first end (3a) of the switch unit (3) with a third end (3c) of the switch unit (3) under the control of the MCU (2) when the main antenna (4) is not abnormal, and communicate a second end (3b) of the switch unit (3) with a fourth end (3d) of the switch unit (3);
when the main antenna (4) is abnormal, the switch unit (3) can cut off a first end (3a) of the switch unit (3) from a third end (3c) of the switch unit (3) under the control of the MCU (2), cut off a second end (3b) of the switch unit (3) from a fourth end (3d) of the switch unit (3), and communicate the first end (3a) of the switch unit (3) with the fourth end (3d) of the switch unit (3).
2. The signal transceiving system of claim 1, wherein the switching unit (3) comprises a first switch (6) and a second switch (7);
a first end (6a) of the first switch (6) is connected with a signal transceiving end (1a) of the SoC (1), and a control end (6c) of the first switch (6) is connected with a first control end (2a) of the MCU (2)1) A first end (7a) of the second switch (7) is connected with a signal receiving end (1b) of the SoC (1), and a control end (7c) of the second switch (7) is connected with a second control end (2a) of the MCU (2)2) Connecting;
the second terminal (6b) of the first switch (6) is switchable between the main antenna (4) and the diversity antenna (5), and the second terminal (7b) of the second switch (7) is connectable to or disconnectable from the diversity antenna (5).
3. Signal transceiving system according to claim 1, wherein the switching unit (3) comprises a first sub-switching unit (8) and a second sub-switching unit (9);
a first end (8a) of the first sub-switch unit (8) is connected with a signal transceiving end (1a) of the SoC (1), a second end (8b) of the first sub-switch unit (8) is connected with the main antenna (4), a third end (8c) of the first sub-switch unit (8) is connected with a third end (9c) of the second sub-switch unit (9), and a control end (8d) of the first sub-switch unit (8) is connected with a first control end (2a) of the MCU (2)1) Connecting;
a first end (9a) of the second sub-switch unit (9) is connected with a signal receiving end (1b) of the SoC (1), a second end (9b) of the second sub-switch unit (9) is connected with the diversity antenna (5), and a control end (9d) of the second sub-switch unit (9) is connected with a second control end (2a) of the MCU (2)2) And (4) connecting.
4. A signal transceiving system according to claim 3, wherein the switching unit (3) is a SKYA21003 radio frequency switch.
5. The signal transceiving system of claim 1, further comprising a detection circuit (10);
an input end (10a) of the detection circuit (10) is connected with a third end (3c) of the switch unit (3), and an output end (10b) of the detection circuit (10) is connected with an input end (2b) of the MCU (2);
the MCU (2) detects the voltage of the third end (3c) of the switch unit (3) through the detection circuit (10), and determines whether the main antenna (4) is abnormal or not according to the detected voltage value.
6. Signal transceiving system according to claim 5, wherein the detection circuit (10) comprises: an inductor (L), a diode (D), a first resistor (R)1) A second resistor (R)2) And a capacitance (C);
the first end of the inductor (L) is connected with the third end (3c) of the switch unit (3), the second end of the inductor (L) is connected with the negative electrode of the diode (D), and the positive electrodes of the diode (D) are respectively connected with the first resistor (R)1) And said second resistor (R)2) Is connected to the first terminal of the first resistor (R)1) Is connected to a power supply, said second resistor (R)2) The second end of the capacitor (C) and the first end of the capacitor (C) are both connected with the input end (2b) of the MCU (2), and the second end of the capacitor (C) is grounded.
7. The signal transceiving system according to claim 1, wherein a transmission terminal (1c) of the SoC (1) is connected to a transmission terminal (2c) of the MCU (2), and the SoC (1) detects whether an abnormality occurs in the main antenna (4) and transmits a detection result to the MCU (2).
8. Signal transceiving system according to any of the claims 1 to 7, wherein the diversity antenna (5) is arranged on a printed circuit board for carrying the electronic components in the T-Box.
9. Signal transceiving system according to any of the claims 1 to 7, wherein the main antenna (4) is arranged on top of the vehicle in which the T-Box is located.
10. A telematics T-Box, characterized in that the T-Box comprises: the system-on-chip system comprises a system-on-chip SoC (1), a micro control unit MCU (2) and a switch unit (3);
a signal transceiving end (1a) of the SoC (1) is connected with a first end (3a) of the switch unit (3), and a signal receiving end (1b) of the SoC (1) is connected with a second end (3b) of the switch unit (3); the third end (3c) of the switch unit (3) is connected with the main antenna (4), and the fourth end (3d) of the switch unit (3) is connected with the diversity antenna (5); the control end (2a) of the MCU (2) is connected with the control end (3e) of the switch unit (3);
the switch unit (3) can communicate a first end (3a) of the switch unit (3) with a third end (3c) of the switch unit (3) under the control of the MCU (2) when the main antenna (4) is not abnormal, and communicate a second end (3b) of the switch unit (3) with a fourth end (3d) of the switch unit (3);
when the main antenna (4) is abnormal, the switch unit (3) can cut off a first end (3a) of the switch unit (3) from a third end (3c) of the switch unit (3) under the control of the MCU (2), cut off a second end (3b) of the switch unit (3) from a fourth end (3d) of the switch unit (3), and communicate the first end (3a) of the switch unit (3) with the fourth end (3d) of the switch unit (3).
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| CN201921664370.XU CN210518315U (en) | 2019-09-30 | 2019-09-30 | Signal transceiving system and T-Box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022226848A1 (en) * | 2021-04-28 | 2022-11-03 | 华为技术有限公司 | Camera device, and data acquisition system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022226848A1 (en) * | 2021-04-28 | 2022-11-03 | 华为技术有限公司 | Camera device, and data acquisition system and method |
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Effective date of registration: 20201217 Address after: Room 1402, basement and building T7, Nansha Jinmao Bay, No.01, jinmaozhong 2nd Street, Huangge Town, Nansha District, Guangzhou City, Guangdong Province Patentee after: Hengda hengchi new energy automobile technology (Guangdong) Co., Ltd Address before: Room 1403, basement and building T7, Nansha Jinmao Bay, No.01, Jinmao middle street, Huangge Town, Nansha District, Guangzhou, Guangdong Province Patentee before: Evergrande new energy vehicle technology (Guangdong) Co.,Ltd. |
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