CN210605685U - Testing device for vehicle-mounted multimedia host - Google Patents
Testing device for vehicle-mounted multimedia host Download PDFInfo
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Abstract
The utility model provides a testing arrangement of on-vehicle multimedia host computer, this testing arrangement includes: the MCU is connected with the upper computer and is configured to receive a signal detection instruction which is sent by the upper computer and aims at the vehicle-mounted multimedia host to be tested; and the signal detection module is respectively connected with the MCU and the vehicle-mounted multimedia host, is configured to trigger the vehicle-mounted multimedia host to send and receive a signal corresponding to the signal detection instruction according to the signal detection instruction, send the signal to the MCU, and compare the parameter of the signal with a preset parameter by the MCU to judge whether the signal is normal. Based on the utility model provides a technical scheme, MCU selects the corresponding module in order to detect on-vehicle multimedia according to the detection instruction that the host computer sent, and it is also very convenient to have reduced test cost and operation.
Description
Technical Field
The utility model relates to an electron device test technical field especially relates to a testing arrangement of on-vehicle multimedia host computer.
Background
Currently, vehicle-mounted multimedia devices have become an essential part of vehicles, integrate GPS navigation or video entertainment systems, and provide more wired and wireless interfaces for external connection.
When the vehicle-mounted multimedia device is shipped from a factory, a manufacturer needs to test the performance of the vehicle-mounted multimedia device. At present, the vehicle-mounted equipment which can not be mutually connected for testing the vehicle-mounted multimedia device, such as a direction key controller, a reversing radar and the like, needs to be tested on a vehicle or a special debugging demonstration rack, and the testing process is complicated and the cost is high.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide a testing apparatus for an in-vehicle multimedia host that overcomes or at least partially solves the above problems.
According to the utility model discloses an aspect provides a testing arrangement of on-vehicle multimedia host computer, and the device includes: the MCU is connected with the upper computer and is configured to receive a signal detection instruction which is sent by the upper computer and aims at the vehicle-mounted multimedia host to be tested;
and the signal detection module is respectively connected with the MCU and the vehicle-mounted multimedia host, is configured to trigger the vehicle-mounted multimedia host to send and receive a signal corresponding to the signal detection instruction according to the signal detection instruction, send the signal to the MCU, and compare the parameter of the signal with a preset parameter by the MCU to judge whether the signal is normal.
Optionally, the signal detection module includes an I/O input interface;
the MCU is also connected with the I/O input interface and is also configured to send the I/O signal detection instruction to the I/O input interface after receiving the I/O signal detection instruction sent by the upper computer;
the I/O input interface is connected with the vehicle-mounted multimedia host and is configured to trigger the vehicle-mounted multimedia host to send and receive I/O signals according to the I/O signal detection instruction and send the I/O signals to the MCU;
the MCU is also configured to compare the level of the I/O signal with the preset level of the I/O signal, if the level of the I/O signal is different from the preset level of the I/O signal, the signal is proved to be abnormal, and the abnormal condition of the signal is reported to the upper computer.
Optionally, the signal detection module further comprises an a/D converter;
the MCU is also connected with the A/D converter and is also configured to send an analog signal detection instruction to the A/D converter after receiving the signal detection instruction sent by the upper computer as the analog signal detection instruction;
the A/D converter is connected with the vehicle-mounted multimedia host and is configured to trigger the vehicle-mounted multimedia host to send and receive an analog signal according to the analog signal detection instruction, convert the analog signal into a digital signal and send the digital signal to the MCU;
the MCU is also configured to compare the level of the digital signal with a preset level of the digital signal, if the level of the digital signal is different from the preset level of the digital signal, the signal is proved to be abnormal, and the abnormal condition of the signal is reported to the upper computer.
Optionally, the apparatus further comprises: a communication connection detection module;
the MCU is also connected with the communication connection detection module and is also configured to generate a communication signal corresponding to the communication connection detection instruction after receiving the communication connection detection instruction sent by the upper computer and send the communication signal to the communication connection detection module;
the communication connection detection module is connected with the vehicle-mounted multimedia host, is configured to send the communication signal to the vehicle-mounted multimedia host, receive a signal which is sent by the vehicle-mounted multimedia host and corresponds to the communication signal, and send the signal to the MCU;
and the MCU is also configured to report the abnormal condition of the corresponding communication connection to the upper computer when the signal is not received in a preset time period.
Optionally, the communication connection detection module includes a UART interface, a LIN interface, a CAN interface, a FlexRay interface, and a first Ethernet interface;
the MCU is also respectively connected with the UART interface, the LIN interface, the CAN interface, the FlexRay interface and the first Ethernet interface, and is also configured to generate a communication signal and send the communication signal to the corresponding interface after receiving a UART communication connection detection instruction or an LIN communication connection detection instruction or a CAN communication connection detection instruction or a FlexRay communication connection detection instruction or an Ethernet communication connection detection instruction sent by the upper computer;
the UART interface, the LIN interface, the CAN interface, the FlexRay interface and the first Ethernet interface are respectively connected with the vehicle-mounted multimedia host, and are configured to send the received communication signal to the vehicle-mounted multimedia host, receive a signal corresponding to the communication signal sent by the vehicle-mounted multimedia host and send the signal to the MCU;
and the MCU is also configured to report the abnormal condition of the communication connection to the upper computer when the signal is not received in a preset time period.
Optionally, the apparatus further comprises: an I/O output interface;
the MCU is also connected with the I/O output interface and is also configured to receive a first function detection instruction sent by the upper computer, generate a first control signal according to the first function detection instruction and send the first control signal to the I/O output interface;
the I/O output interface is connected with the vehicle-mounted multimedia host and is configured to send the first control signal to the vehicle-mounted multimedia host, and if the vehicle-mounted multimedia host executes corresponding operation, the function is normal; if not, the function is abnormal.
Optionally, the apparatus further comprises a D/a converter;
the MCU is also connected with the D/A converter and is also configured to receive a second function detection instruction sent by the upper computer, generate a second control signal according to the second function detection instruction and send the second control signal to the D/A converter; wherein the second control signal is a digital signal;
the D/A converter is connected with the vehicle-mounted multimedia host and is configured to convert the second control signal into an analog signal and send the analog signal to the vehicle-mounted multimedia host, and if the vehicle-mounted multimedia host executes corresponding operation, the function is normal; if not, the function is abnormal.
Optionally, the apparatus further comprises:
the USB-UART interface is connected with the upper computer and the MCU at two ends respectively, and is configured to convert a detection instruction sent by the upper computer from a USB signal into a UART signal and send the UART signal to the MCU;
and two ends of the second Ethernet interface are respectively connected with the upper computer and the MCU, and the second Ethernet interface is configured to upload result data generated by the vehicle-mounted multimedia host detected by the MCU to the upper computer.
Optionally, the apparatus further comprises: a power output interface;
the MCU is also connected with the power output interface and is configured to receive a power on-off instruction issued by the upper computer, generate a corresponding control signal according to the power on-off instruction and send the control signal to the power output interface;
and the power output interface is connected with the vehicle-mounted multimedia host and is configured to control the on-off of the power of the vehicle-mounted multimedia host according to the control signal.
The embodiment of the utility model provides an in, MCU is connected with the host computer respectively, signal detection module, and MCU configuration is for sending the signal detection instruction that the host computer sent for signal detection module, and the on-vehicle multimedia host computer that triggers the examination of awaiting measuring by signal detection module sends and receives the signal that corresponds with signal detection instruction, sends for MCU, makes MCU judge whether this signal is normal with the parameter of this signal with predetermineeing the parameter contrast. The scheme not only reduces the maintenance cost of the vehicle-mounted multimedia host, but also is very convenient to operate.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 shows a schematic structural diagram of a testing apparatus for an on-vehicle multimedia host according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be noted that the technical features of the embodiments and the alternative embodiments of the present invention can be combined with each other without conflict.
In order to solve the problem, the utility model provides a testing arrangement of on-vehicle multimedia host computer. Fig. 1 shows a schematic structural diagram of a testing apparatus for an on-vehicle multimedia host according to an embodiment of the present invention. As shown in fig. 1, the testing device 100 includes an MCU110 and a signal detection module 120, wherein one end of the MCU110 is connected to the upper computer 200, the other end is connected to the signal detection module 120, the signal detection module 120 is connected to the on-vehicle multimedia host 300, the MCU110 is configured to receive a signal detection instruction sent by the upper computer 200 and directed to the on-vehicle multimedia host 300, the signal detection module 120 triggers the on-vehicle multimedia host 300 to send and receive a signal corresponding to the signal detection instruction, and the parameter of the signal is compared with a preset parameter to determine whether the signal is normal.
The embodiment of the utility model provides an in, MCU110 respectively with host computer 200, signal detection module 120 is connected, MCU110 configures to and sends the signal detection instruction that host computer 200 sent for signal detection module 120, the on-vehicle multimedia host computer 300 that triggers the examination of awaiting measuring by signal detection module 120 sends and receives with the signal that signal detection instruction corresponds, send for MCU110, make MCU110 with the parameter of this signal with predetermine the parameter contrast and judge whether this signal is normal. The scheme not only reduces the maintenance cost of the vehicle-mounted multimedia host 300, but also is very convenient to operate.
Specifically, the parameter of the signal is a level value, and if the preset parameter is a low level and the signal sent by the on-board multimedia host 300 is a high level signal, it proves that the signal sent by the on-board multimedia host 300 is abnormal.
In an optional embodiment, as shown in fig. 1, the signal detection module 120 includes an I/O input interface 121, the MCU110 is further connected to the I/O input interface 121, the MCU110 is further configured to send the I/O signal detection instruction to the I/O input interface 121 after receiving the signal detection instruction sent by the upper computer 200 as the I/O signal detection instruction, the I/O input interface 121 is connected to the on-vehicle multimedia host 300, and is configured to trigger the on-vehicle multimedia host 300 to send and receive the I/O signal according to the I/O signal detection instruction, send the I/O signal to the MCU110, the MCU110 compares the level of the I/O signal with a preset level of the I/O signal, and if the level is different, it is proved that the signal is abnormal, and reports the signal abnormal condition to the upper computer 200.
The I/O signal may be an external power amplifier MUTE signal (AMP _ MUTE), an SOS key lamp (SOS _ LED), or the like.
In an optional embodiment, as shown in fig. 1, the signal detection module 120 further includes an a/D converter 122, the MCU110 is further connected to the a/D converter 122, the MCU110 is further configured to send an analog signal detection instruction to the a/D converter 122 after receiving the analog signal detection instruction sent by the host computer 200, the a/D converter 122 is further connected to the vehicle-mounted multimedia host 300, the a/D converter 122 is configured to trigger the vehicle-mounted multimedia host 300 to send and receive an analog signal according to the analog signal detection instruction, convert the analog signal into a digital signal, send the digital signal to the MCU110, the MCU110 compares the level of the digital signal with a preset level of the digital signal, and if the level is different, it is verified that the signal is abnormal, and reports the signal abnormal condition to the host computer 200.
Wherein, analog signal can be for on-vehicle multimedia host computer 300's supply voltage signal, also can be for other signals, the utility model discloses do not specifically limit to this.
In an optional embodiment, as shown in fig. 1, the apparatus further includes a communication connection detection module 130, the MCU110 is further connected to the communication connection detection module 130, the MCU110 is further configured to generate a communication signal corresponding to the communication connection detection instruction after receiving a communication connection detection instruction sent by the upper computer 200, send the communication signal to the communication connection detection module 130, the communication connection detection module 130 is connected to the on-vehicle multimedia host 300, the communication connection detection module 130 is configured to send the communication signal to the on-vehicle multimedia host 300, receive a signal corresponding to the communication signal sent by the on-vehicle multimedia host 300, send the signal to the MCU110, and report an abnormal condition of the corresponding communication connection to the upper computer 200 when the MCU110 determines that the signal is not received within a preset time period.
In one example, the communication signal sent by the MCU 100 according to the communication connection detection instruction is "1", and if the in-vehicle multimedia host 300 returns a signal "0" according to the communication signal, the communication connection is proved to be normal; if not, the communication connection is proved to be abnormal.
Specifically, in an optional embodiment, the communication connection detection module includes a UART interface 131, a LIN interface 132, a CAN interface 133, a FlexRay interface 134, and a first Ethernet interface 135, wherein the MCU110 is further connected to the UART interface 131, the LIN interface 132, the CAN interface 133, the FlexRay interface 134, and the first Ethernet interface 135, respectively, and the MCU110 is further configured to generate a communication signal and send the communication signal to a corresponding interface after receiving that the communication connection detection instruction sent by the upper computer 200 is a UART communication connection detection instruction, a LIN communication connection detection instruction, a CAN communication connection detection instruction, a FlexRay communication connection detection instruction, or an Ethernet communication connection detection instruction. The UART interface 131, the LIN interface 132, the CAN interface 133, the FlexRay interface 134, and the first Ethernet interface 135 are respectively connected to the on-vehicle multimedia host 300, and are configured to transmit a received communication signal to the on-vehicle multimedia host 300, receive a signal corresponding to the communication signal transmitted by the on-vehicle multimedia host 300, transmit the signal to the MCU110, and report an abnormal condition of the communication connection to the host 200 when the MCU110 determines that the signal is not received within a preset time period.
In an alternative embodiment, as shown in fig. 1, the above apparatus further comprises: the I/O output interface 140, the MCU110 is further connected with the I/O output interface 140, the MCU110 is further configured to receive a first function detection instruction sent by the upper computer 200, generate a first control signal according to the first function detection instruction and send the first control signal to the I/O output interface 140, the I/O output interface 140 is connected with the on-vehicle multimedia host computer 300, the I/O output interface 140 is configured to send the first control signal to the on-vehicle multimedia host computer 300, and if the on-vehicle multimedia host computer 300 executes corresponding operation according to the first control signal, the function is normal; if not, the function is abnormal.
The first control signal may be a Reverse image control signal (Reverse), a split screen power enable control signal (PWR _ KEY), or the like.
In an alternative embodiment, as shown in fig. 1, the above apparatus further comprises: the D/a converter 150, the MCU110 is further connected to the D/a converter 150, the MCU110 is further configured to receive a second function detection instruction sent by the upper computer 200, generate a second control signal according to the second function detection instruction and send the second control signal to the D/a converter 150, wherein the second control signal is a digital signal, the D/a converter 150 is connected to the on-vehicle multimedia host 300, the D/a converter 150 is configured to convert the second control signal into an analog signal and send the analog signal to the on-vehicle multimedia host 300, and the on-vehicle multimedia host 300 performs a corresponding operation according to the second control signal, so that the function is normal; if not, the function is abnormal.
In an optional embodiment, as shown in fig. 1, the apparatus further includes a USB-UART interface 160, two ends of which are respectively connected to the upper computer 200 and the MCU110, and configured to convert the detection instruction sent by the upper computer 200 from a USB signal to a UART signal and send the UART signal to the MCU 110. And two ends of the second Ethernet interface are respectively connected with the upper computer 200 and the MCU110, and are configured to upload result data generated by the MCU110 detecting the on-vehicle multimedia host 300 to the upper computer 200. The USB-UART interface 160 generally transmits simple command data, so the USB-UART interface transmits a detection command, and the second Ethernet interface 170 can transmit larger network data, and the transmission speed is fast, so the MCU110 transmits result data obtained by detecting the on-vehicle multimedia host 300 to the host 200 through the second Ethernet interface 170. The result data includes data that each output signal tested by the MCU110 on the on-vehicle multimedia host 300 is normal or abnormal, and each communication connection is normal or abnormal.
In an optional embodiment, as shown in fig. 1, the apparatus further includes a power output interface 180, the MCU110 is further connected to the power output interface 180, and is configured to receive a power on/off command issued by the upper computer 200, generate a corresponding control signal according to the power on/off command, and send the control signal to the power output interface 180, and the power output interface 180 is connected to the vehicle-mounted multimedia host 300, and is configured to control the power on/off of the vehicle-mounted multimedia host 300 according to the control signal.
The MCU110 includes a power supply, a memory, a crystal oscillator, etc., and is configured to execute corresponding operations according to various detection instructions sent by the upper computer 200.
The embodiment of the utility model provides an in, MCU and host computer connection are configured to the detection instruction to on-vehicle multimedia host computer that receives the host computer and send to detect on-vehicle multimedia host computer through corresponding interface or converter according to each detection instruction. Based on the technical scheme provided by the utility model, the cost of overhaul and the operation that has reduced on-vehicle multimedia host computer are also very convenient.
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 the same; 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 can be modified or some or all of the technical features can be equivalently replaced within the spirit and principles of the present invention; such modifications and substitutions do not depart from the scope of the present invention.
Claims (9)
1. A testing device for a vehicle-mounted multimedia host is characterized by comprising:
the MCU is connected with the upper computer and is configured to receive a signal detection instruction which is sent by the upper computer and aims at the vehicle-mounted multimedia host to be tested;
and the signal detection module is respectively connected with the MCU and the vehicle-mounted multimedia host, is configured to trigger the vehicle-mounted multimedia host to send and receive a signal corresponding to the signal detection instruction according to the signal detection instruction, send the signal to the MCU, and compare the parameter of the signal with a preset parameter by the MCU to judge whether the signal is normal.
2. The apparatus of claim 1, wherein the signal detection module comprises an I/O input interface;
the MCU is also connected with the I/O input interface and is also configured to send the I/O signal detection instruction to the I/O input interface after receiving the I/O signal detection instruction sent by the upper computer;
the I/O input interface is connected with the vehicle-mounted multimedia host and is configured to trigger the vehicle-mounted multimedia host to send and receive I/O signals according to the I/O signal detection instruction and send the I/O signals to the MCU;
the MCU is also configured to compare the level of the I/O signal with the preset level of the I/O signal, if the level of the I/O signal is different from the preset level of the I/O signal, the signal is proved to be abnormal, and the abnormal condition of the signal is reported to the upper computer.
3. The apparatus of claim 1 or 2, wherein the signal detection module further comprises an a/D converter;
the MCU is also connected with the A/D converter and is also configured to send an analog signal detection instruction to the A/D converter after receiving the signal detection instruction sent by the upper computer as the analog signal detection instruction;
the A/D converter is connected with the vehicle-mounted multimedia host and is configured to trigger the vehicle-mounted multimedia host to send and receive an analog signal according to the analog signal detection instruction, convert the analog signal into a digital signal and send the digital signal to the MCU;
the MCU is also configured to compare the level of the digital signal with a preset level of the digital signal, if the level of the digital signal is different from the preset level of the digital signal, the signal is proved to be abnormal, and the abnormal condition of the signal is reported to the upper computer.
4. The apparatus of claim 1 or 2, further comprising: a communication connection detection module;
the MCU is also connected with the communication connection detection module and is also configured to generate a communication signal corresponding to the communication connection detection instruction after receiving the communication connection detection instruction sent by the upper computer and send the communication signal to the communication connection detection module;
the communication connection detection module is connected with the vehicle-mounted multimedia host, is configured to send the communication signal to the vehicle-mounted multimedia host, receive a signal which is sent by the vehicle-mounted multimedia host and corresponds to the communication signal, and send the signal to the MCU;
and the MCU is also configured to report the abnormal condition of the corresponding communication connection to the upper computer when the signal is not received in a preset time period.
5. The apparatus according to claim 4, wherein the communication connection detection module comprises a UART interface, a LIN interface, a CAN interface, a FlexRay interface and a first Ethernet interface;
the MCU is also respectively connected with the UART interface, the LIN interface, the CAN interface, the FlexRay interface and the first Ethernet interface, and is also configured to generate a communication signal and send the communication signal to the corresponding interface after receiving a UART communication connection detection instruction or an LIN communication connection detection instruction or a CAN communication connection detection instruction or a FlexRay communication connection detection instruction or an Ethernet communication connection detection instruction sent by the upper computer;
the UART interface, the LIN interface, the CAN interface, the FlexRay interface and the first Ethernet interface are respectively connected with the vehicle-mounted multimedia host, and are configured to send the received communication signal to the vehicle-mounted multimedia host, receive a signal corresponding to the communication signal sent by the vehicle-mounted multimedia host and send the signal to the MCU;
and the MCU is also configured to report the abnormal condition of the communication connection to the upper computer when the signal is not received in a preset time period.
6. The apparatus of claim 1 or 2, further comprising: an I/O output interface;
the MCU is also connected with the I/O output interface and is also configured to receive a first function detection instruction sent by the upper computer, generate a first control signal according to the first function detection instruction and send the first control signal to the I/O output interface;
the I/O output interface is connected with the vehicle-mounted multimedia host and is configured to send the first control signal to the vehicle-mounted multimedia host, and if the vehicle-mounted multimedia host executes corresponding operation, the function is normal; if not, the function is abnormal.
7. The apparatus of claim 1 or 2, further comprising a D/a converter;
the MCU is also connected with the D/A converter and is also configured to receive a second function detection instruction sent by the upper computer, generate a second control signal according to the second function detection instruction and send the second control signal to the D/A converter; wherein the second control signal is a digital signal;
the D/A converter is connected with the vehicle-mounted multimedia host and is configured to convert the second control signal into an analog signal and send the analog signal to the vehicle-mounted multimedia host, and if the vehicle-mounted multimedia host executes corresponding operation, the function is normal; if not, the function is abnormal.
8. The apparatus of claim 1 or 2, further comprising:
the USB-UART interface is connected with the upper computer and the MCU at two ends respectively, and is configured to convert a detection instruction sent by the upper computer from a USB signal into a UART signal and send the UART signal to the MCU;
and two ends of the second Ethernet interface are respectively connected with the upper computer and the MCU, and the second Ethernet interface is configured to upload result data generated by the vehicle-mounted multimedia host detected by the MCU to the upper computer.
9. The apparatus of claim 1 or 2, further comprising: a power output interface;
the MCU is also connected with the power output interface and is configured to receive a power on-off instruction issued by the upper computer, generate a corresponding control signal according to the power on-off instruction and send the control signal to the power output interface;
and the power output interface is connected with the vehicle-mounted multimedia host and is configured to control the on-off of the power of the vehicle-mounted multimedia host according to the control signal.
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| CN201921755925.1U CN210605685U (en) | 2019-10-18 | 2019-10-18 | Testing device for vehicle-mounted multimedia host |
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Effective date of registration: 20220325 Address after: 430051 No. b1336, chuanggu startup area, taizihu cultural Digital Creative Industry Park, No. 18, Shenlong Avenue, Wuhan Economic and Technological Development Zone, Wuhan, Hubei Province Patentee after: Yikatong (Hubei) Technology Co.,Ltd. Address before: No.c101, chuanggu start up area, taizihu cultural Digital Industrial Park, No.18 Shenlong Avenue, Wuhan Economic Development Zone, Hubei Province Patentee before: HUBEI ECARX TECHNOLOGY Co.,Ltd. |