CN113376464B - Universal automobile central control product test box circuit - Google Patents
Universal automobile central control product test box circuit Download PDFInfo
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- CN113376464B CN113376464B CN202110661645.XA CN202110661645A CN113376464B CN 113376464 B CN113376464 B CN 113376464B CN 202110661645 A CN202110661645 A CN 202110661645A CN 113376464 B CN113376464 B CN 113376464B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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Abstract
The invention relates to a universal automobile central control product test box circuit which comprises a multi-pin aviation head interface, a power input interface, a bus CAN/LIN interface circuit, a relay control circuit, a USB interface, an analog high/low level trigger circuit, an RVC interface, a user instruction test module, a product power supply monitoring interface, a product node test interface, a sound output interface circuit and a microphone interface, wherein the power input interface is respectively electrically connected with a programmable power supply, an external power supply interface and a current test circuit, the relay control circuit is respectively electrically connected with the USB interface, the analog high/low level trigger circuit and an upper computer, the bus CAN/LIN interface circuit is electrically connected with the CAN test box, the CAN test box is electrically connected with the upper computer, and the aviation head interface is respectively electrically connected with a tested product and a reversing camera through wire harnesses. The invention has reasonable design, regular layout, good universality, expansibility and standardability and high electricity safety.
Description
Technical Field
The invention relates to the technical field of automobile central control product testing, in particular to a universal automobile central control product testing box circuit.
Background
The prior black box test bench for the automobile central control product is formed by combining a simple power supply, a wiring board, various peripheral devices (such as an RVC reversing module, an external power amplifier module, a 360 panoramic box, an air conditioner control panel module, a vehicle recorder, a T-box, a combination instrument and other modules), and other input interfaces (such as a voice module, a sound module and a USB). The existing automobile central control product test bench has the following defects:
(1) Different peripheral interface modules are required to be built for testing different products, so that the wiring harness is irregular, wiring is irregular, short circuit faults are easy to occur, and the working efficiency is low;
(2) The test bench has poor universality and compatibility, and the test bench is very troublesome to replace when the product is transformed;
(3) The test bench has high manufacturing cost and large occupied space.
In order to solve the problems, a universal automobile central control product test box circuit is invented.
Disclosure of Invention
The invention aims to solve the problems that different peripheral interface modules are required to be built for testing different products in the existing automobile central control product test rack, so that wiring harnesses are irregular and wiring is not standard, short circuit faults are easy to occur, the working efficiency is low, the universality and compatibility of the test rack are poor, the replacement of the test rack during product transformation is very troublesome, the manufacturing cost of the test rack is high, and the occupied space is large. The specific solution scheme is as follows:
the universal automobile central control product test box circuit comprises a multi-pin aviation head interface, a power input interface, a bus CAN/LIN interface circuit, a relay control circuit, a USB interface, an analog high/low level trigger circuit, an RVC interface, a user instruction test module, a product power supply monitoring interface, a product node test interface, a sound output interface circuit and a microphone interface, wherein the power input interface is electrically connected with a programmable power supply, an external power supply interface and a current test circuit respectively, the relay control circuit is electrically connected with the USB interface, the analog high/low level trigger circuit and an upper computer respectively, the bus CAN/LIN interface circuit is electrically connected with the CAN test box, the CAN test box is electrically connected with the upper computer, and the aviation head interface is electrically connected with a tested product and a reversing camera respectively through wire harnesses.
Further, the power input interface comprises a power positive port and a power negative port which are electrically connected with a programmable power supply, wherein the power negative port is provided with a power ground 1, a power ground 2 and a power ground 3; the current test circuit comprises an ammeter with an input end electrically connected with the power ground 1, wherein an output end of the ammeter is connected with a fuse in series and then is electrically connected with an external static current test end and one end of a change-over switch, the other ends of the external static current test end and the change-over switch are electrically connected with pins 73 of an aviation head interface, and a power supply end of the ammeter is electrically connected with a 12V-to-5V module.
Further, the relay control circuit comprises a relay control chip, pins 1, 2 of the relay control chip are electrically connected with a 12V regulated power supply, pins 5, 6 and 7 of the relay control chip are electrically connected with an upper computer through RS232, OUT1 of the relay control chip is electrically connected with an ignition key ACC lead wire of an aviation head interface pin5 through a relay K1, OUT2 of the relay control chip is electrically connected with a storage battery lead wire of the aviation head interface pin6 through a relay K2, OUT3, OUT4 and OUT5 of the relay control chip are electrically connected with power supply pins of USB1, USB2 and USB3 of a USB interface through relays K3, K4 and K5 respectively, pins 74 to 82 of the aviation head interface are electrically connected with a plurality of analog high/low level trigger circuits through relays K6 to K14 respectively, OUT15 of the relay control chip enables an high/low level output 2 interface to be electrically connected with an analog high/low level trigger circuit through a relay K15, and OUT16 of the relay control chip enables an OUT16 to be electrically connected with the analog high/low level output 2 interface through a relay K16.
Further, the analog high/low level trigger circuit comprises a boat-shaped or toggle switch, wherein the switch comprises two input pins and one output pin, one input pin is positively connected with a power supply, and the other input pin is electrically connected with the power supply ground 1 or the power supply ground 2.
Further, the bus CAN/LIN interface circuit comprises an internal interface which is electrically connected with the CAN test box through a CAN interface and an LIN interface, and a CAN and LIN external interface which is connected with the internal interface in parallel, wherein the internal CAN interface is provided with a terminal resistor and a selection switch, the internal CAN and LIN interface are electrically connected with the CAN and LIN terminals on the panel of the test box and corresponding pins of the aviation head interface at the same time, and the ground of the bus CAN/LIN interface circuit is electrically connected with the power ground 1.
Further, the product power supply monitoring interface comprises an ACC monitoring port, a storage battery monitoring port and a power ground 1 port, wherein the ACC monitoring port is electrically connected with a tested product and a pin5 of the aviation head interface, the storage battery monitoring port is electrically connected with a pin6 of the aviation head interface, and the power ground 1 port is electrically connected with a pin73 of the aviation head interface; the external power supply interface comprises a plurality of groups of power supply positive sockets and power supply negative sockets which are connected with the power supply input interface in parallel, and the power supply negative sockets are electrically connected with the power supply ground 3.
Further, the product node test interface comprises nodes 1 to 8 ports which are respectively and electrically connected with a plurality of nodes in the tested product through pins 41 to 48 of the aviation head interface, and the nodes 1 to 8 ports are used for testing the tested product by external equipment. The user instruction testing module comprises a wire control interface or an instruction indicator lamp which are respectively and electrically connected with a plurality of wire control signals in the tested product through pins 21 to 28 of the aviation head interface.
Further, the microphone interface comprises a plurality of groups of microphone power supply positive sockets, microphone power supply negative sockets and microphone input sockets which are electrically connected with a microphone circuit in the tested product through pins of the aviation head interface, and the microphone interface is used for testing voice functions.
Further, the RVC interface includes an rvc_vcc socket electrically connected to the power supply of the reversing camera through pin33 of the aerial head interface, an rvc_gnd socket electrically connected to the power supply of the reversing camera through pin34 of the aerial head interface, a cvbs+ socket electrically connected to the video signal of the reversing camera through pin35 of the aerial head interface, and a CVBS-socket electrically connected to the video signal of the reversing camera through pin36 of the aerial head interface.
Further, the sound output interface circuit comprises a plurality of groups of earphone sockets, a loudspeaker socket, a double-cutter change-over switch and an earphone matching circuit, wherein the double-cutter change-over switch is used for testing and switching between the earphone sockets and the loudspeaker socket, the input end of the earphone matching circuit is electrically connected with the double-cutter change-over switch, the output end of the earphone matching circuit is electrically connected with the earphone sockets, and the double-cutter change-over switch is electrically connected with the sound output circuit of a tested product through pins 11 to 18 of an aviation head interface.
In summary, the technical scheme of the invention has the following beneficial effects:
the invention solves the problems that different peripheral interface modules are required to be built for testing different products in the existing automobile central control product test rack, so that the wiring harness is irregular, wiring is not standard, short circuit faults are easy to occur, the working efficiency is low, the universality and compatibility of the test rack are poor, the replacement of the test rack during product transformation is very troublesome, the manufacturing cost of the test rack is high, and the occupied space is large. Because the number of PIN feet of the automobile central control product is more, the invention covers all the PIN foot functions of the current automobile central control product by centralizing the input/output of the PIN feet with different functions of different automobile central control products into a unified interface, thereby forming a universal aviation head interface and a peripheral equipment interface, and having the compatibility and expansibility of the PIN feet. A plurality of reserved PIN PINs are reserved in the aviation head interface, so that the novel product testing compatibility and expansion are facilitated. In a word, the invention has reasonable design, regular layout, good universality, expansibility and standardability and high electricity safety.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments of the present invention will be briefly described below. It will be apparent to those skilled in the art that the drawings in the following description are only a few embodiments of the present invention and that other drawings may be derived from these drawings without inventive faculty.
FIG. 1 is a block diagram of a universal automotive center control product-based test cartridge circuit of the present invention;
FIG. 2 is a circuit diagram of a relay control circuit and an analog high/low level trigger circuit according to the present invention;
FIG. 3 is a circuit diagram of a bus CAN/LIN interface circuit of the invention;
FIG. 4 is a circuit diagram of a power input interface and a current testing circuit according to the present invention;
FIG. 5 is a circuit diagram of a product power monitoring interface of the present invention;
FIG. 6 is a circuit diagram of an external power interface of the present invention;
FIG. 7 is a circuit diagram of a product node test interface of the present invention;
FIG. 8 is a circuit diagram of a microphone interface of the present invention;
figure 9 is a circuit diagram of the RVC interface of the present invention;
fig. 10 is a circuit diagram of an inventive audio output interface circuit.
Reference numerals illustrate:
100-aviation head interface, 101-power input interface, 102-current test circuit, 110-bus CAN/LIN interface circuit, 111-CAN test box, 120-relay control circuit, 121-USB interface, 122-analog high/low level trigger circuit, 130-RVC interface, 140-user instruction test module, 141-product power supply monitoring interface, 142-product node test interface, 143-sound output interface circuit, 144-microphone interface, 200-programmable power supply, 201-external power supply interface, 300-upper computer, 400-tested product, 500-reversing camera.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Term interpretation: RVC is the abbreviation of English Rear View Camera, chinese is the reversing Camera. CAN is an abbreviation for Controller Area Network, meaning controller area network. The LIN bus is a low cost serial communication network defined for automotive distributed electronic systems.
As shown in fig. 1 to 10, the universal automobile central control product test box circuit comprises a multi-PIN aviation head interface 100, a power input interface 101, a bus CAN/LIN interface circuit 110, a relay control circuit 120, a USB interface 121, an analog high/low level trigger circuit 122, an RVC interface 130, a user instruction test module 140, a product power supply monitoring interface 141, a product node test interface 142, an audio output interface circuit 143 and a microphone interface 144, wherein the power input interface 101 is electrically connected with a programmable power supply 200, an external power supply interface 201 and a current test circuit 102 respectively, the relay control circuit 120 is electrically connected with a USB interface 121, an analog high/low level trigger circuit 122 and an upper computer 300 respectively, the bus CAN/LIN interface circuit 110 is electrically connected with a CAN test box 111, the CAN test box 111 is electrically connected with the upper computer 300, and the aviation head interface 100 is electrically connected with a tested product 400 (such as an automobile central control console) and a reversing camera 500 respectively through wire harnesses.
Further, the power input interface 101 includes a power positive port and a power negative port electrically connected to the programmable power supply 200, wherein the power negative port is provided with a power ground 1, a power ground 2, and a power ground 3. The current test circuit 102 comprises an ammeter with an input end electrically connected with the power ground 1, wherein an output end of the ammeter is connected with a fuse in series, and then is electrically connected with an external static current test end J and one end of a change-over switch S9, the other end of the external static current test end J and the other end of the change-over switch S9 are electrically connected with a PIN PIN73 of the aviation head interface 100, a power supply end of the ammeter is electrically connected with a 12V-to-5V module, and the 12V-to-5V module is electrically connected with a 12V stabilized power supply.
Further, the relay control circuit 120 includes a relay control chip U1 (the model of the relay control chip U1 is JY-DAM1600, which is a 16-channel relay controller, and belongs to the prior art, the specific working principle thereof is not described herein), PINs 1 and 2 of the relay control chip U1 are electrically connected with a 12V regulated power supply, PINs 5, 6 and 7 of the relay control chip U1 are electrically connected with the host computer 300 through RS232, OUT1 of the relay control chip U1 is electrically connected with an ignition key ACC lead (led by a tested product, namely, a central console, and the ACC lead is electrically connected with a power supply positive) of PIN PIN5 of an aviation head interface 100 through relay K1, OUT2 of the relay control chip U1 is electrically connected with a battery lead (and the power supply positive) of PIN 100 of an aviation head interface PIN PIN6 during testing through relay K2, OUT3, OUT4 and OUT5 of the relay control chip U1 are respectively electrically connected with USB1, 2 of a USB interface 121 through relays K3, K4 and K5, respectively, VCC1, VCC2, and USB3 are electrically connected with one end of each of USB1, VCC2 and USB3 are electrically connected with USB1, USB2 are electrically connected with USB3, USB2 are respectively, USB 1.
PINs PIN74 to PIN82 of the aircraft head interface 100 are respectively electrically connected with a plurality of analog high/low level trigger circuits 122 through relays K6 to K14 by OUT6 to OUT14 of the relay control chip U1, the high/low level output 2 interface is electrically connected with the analog high/low level trigger circuits 122 through OUT15 of the relay control chip U1, and the high/low level output 1 interface is electrically connected with the analog high/low level trigger circuits 122 through OUT16 of the relay control chip U1.
Further, the analog high/low level trigger circuit 122 includes a boat-shaped or toggle switch (S1 to S6 in fig. 2) including two input pins and one output pin, wherein one input pin is positively connected to the power supply and the other input pin is electrically connected to the power supply ground 1 or the power supply ground 2.
Further, the bus CAN/LIN interface circuit 110 comprises an internal interface (such as CAN1, CAN2 and LIN formed by DB9 sockets) electrically connected with the CAN test box 111, and a CAN/LIN external interface (such as CAN11, CAN22 and LIN1 formed by DB9 sockets) connected in parallel with the internal interface, wherein the internal CAN interface is provided with a terminal resistor and a selection switch (such as terminal resistor 1 arranged between CAN1L and CAN1H, selection switch S7, terminal resistor 2 arranged between CAN2L and CAN2H and selection switch S8), the internal CAN/LIN interface is electrically connected with corresponding PINs of a CAN/LIN terminal and an aviation head interface 100 on a panel (not shown in the figure) of the test box (such as CAN1L and PIN52, CAN1H and PIN51, CAN2L and PIN62, and CAN2H and PIN 61), and the ground of the bus CAN/LIN interface circuit 110 is electrically connected with the power ground 1.
Further, the product power supply monitoring interface 141 includes an ACC monitoring port (the ACC monitoring port may be electrically connected with the power supply during testing) where the product 400 is electrically connected with the PIN5 of the aircraft head interface 100, a battery monitoring port (the battery monitoring port may be electrically connected with the power supply during testing) where the product 400 is electrically connected with the PIN6 of the aircraft head interface 100, and a power ground 1 port where the product 400 is electrically connected with the PIN73 of the aircraft head interface 100. The external power supply interface 201 includes a plurality of sets of power positive sockets (such as 12 power positive sockets shown in fig. 6) connected in parallel with the power input interface 101, and power negative sockets (such as 6 power negative sockets shown in fig. 6) electrically connected to the power ground 3.
Further, the product node test interface 142 includes nodes 1 to 8 ports (as shown in fig. 7) electrically connected to a plurality of nodes (not shown in the figure) in the tested product 400 through PINs PIN41 to PIN48 of the air head interface 100, respectively, and the nodes 1 to 8 ports are used for testing the tested product 400 by external devices (not shown in the figure). The user command testing module 140 includes a wire control interface or a command indicator lamp (not shown) electrically connected to a plurality of wire control signals (not shown) in the tested product 400 through PINs PIN21 to PIN28 of the air head interface 100, wherein the wire control interface can be electrically connected to an external testing device or apparatus to realize a test, or some wire control signals can be converted into signals of the indicator lamp through a set command indicator lamp assembly board (not shown) to complete the test.
Further, the microphone interface 144 includes a plurality of sets of microphone power supply positive sockets (such as MIC1_vcc and MIC 2_vcc), microphone power supply negative sockets (such as MIC1_gnd and MIC 2_gnd), microphone input sockets (such as microphone 1 electrically connected to PIN1, microphone 2 electrically connected to PIN2, microphone 3 electrically connected to PIN3 and microphone 4 electrically connected to PIN 4) electrically connected to microphone circuits (not shown) in the tested product 400 via PINs of the air head interface 100, for testing of voice functions. The power supply ends (including a microphone power supply positive socket and a microphone power supply negative socket) of the microphone 3 and the microphone 4 are respectively connected with the power supply ends of the microphone 1 and the microphone 1 in parallel.
Further, RVC interface 130 includes an rvc_vcc socket electrically connected to the power supply positive (referred to as rvc_vcc) of reversing camera 500 through PIN33 of aerial head interface 100, an rvc_gnd socket electrically connected to the power supply negative (referred to as rvc_gnd) of reversing camera 500 through PIN34 of aerial head interface 100, a cvbs+ socket electrically connected to the video signal of reversing camera 500 through PIN35 of aerial head interface 100, and a CVBS-socket electrically connected to the video signal of reversing camera 500 through PIN36 of aerial head interface 100.
Further, the sound output interface circuit 143 includes a plurality of sets of earphone sockets (such as earphone sockets 1 to 4), speaker sockets (such as RR horn hole+, RR horn hole-, FR horn hole+, FR horn hole-, FL horn hole-, and FL horn hole-), a double-knife switch (such as S10-S13), and an earphone matching circuit (composed of voltage dividing resistors 40kΩ,10 kΩ, and a coupling capacitor 33 μf), where the double-knife switch is used for test switching between the earphone sockets and the speaker sockets, an input end of the earphone matching circuit is electrically connected to the double-knife switch, an output end of the earphone matching circuit is electrically connected to the earphone sockets, and the double-knife switch is electrically connected to a sound output circuit (not shown in the drawing) of the tested product 400 through PINs PIN11 to PIN18 of the air head interface 100. In order to facilitate the operation during the test, a horn socket JP is provided in parallel with the horn socket.
The pin definitions for the aircraft head interface 100 are shown in the following table, where a number of pins are reserved for expansion:
in summary, the technical scheme of the invention has the following beneficial effects:
the invention solves the problems that different peripheral interface modules are required to be built for testing different products in the existing automobile central control product test rack, so that the wiring harness is irregular, wiring is not standard, short circuit faults are easy to occur, the working efficiency is low, the universality and compatibility of the test rack are poor, the replacement of the test rack during product transformation is very troublesome, the manufacturing cost of the test rack is high, and the occupied space is large. Because the number of PIN feet of the automobile central control product is more, the invention covers all the PIN foot functions of the current automobile central control product by centralizing the input/output of the PIN feet with different functions of different automobile central control products into a unified interface, thereby forming a universal aviation head interface and a peripheral equipment interface, and having the compatibility and expansibility of the PIN feet. A plurality of reserved PIN PINs are reserved in the aviation head interface, so that the novel product testing compatibility and expansion are facilitated. In a word, the invention has reasonable design, regular layout, good universality, expansibility and standardability and high electricity safety.
The above-described embodiments do not limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present invention.
Claims (8)
1. Control product test box circuit in based on general car, its characterized in that: the device comprises a multi-pin aviation head interface, a power input interface, a bus CAN/LIN interface circuit, a relay control circuit, a USB interface, an analog high/low level trigger circuit, an RVC interface, a user instruction test module, a product power supply monitoring interface, a product node test interface, a sound output interface circuit and a microphone interface, wherein the power input interface is respectively and electrically connected with a programmable power supply, an external power supply interface and a current test circuit, the relay control circuit is respectively and electrically connected with the USB interface, the analog high/low level trigger circuit and an upper computer, the bus CAN/LIN interface circuit is electrically connected with a CAN test box, the CAN test box is electrically connected with the upper computer, and the aviation head interface is respectively and electrically connected with a tested product and a reversing camera through a wire harness; the power input interface comprises a power positive port and a power negative port which are electrically connected with a programmable power supply, wherein the power negative port is provided with a power ground 1, a power ground 2 and a power ground 3; the current testing circuit comprises an ammeter, wherein the input end of the ammeter is electrically connected with the power ground 1, the output end of the ammeter is connected with a fuse in series and then is electrically connected with an external static current testing end and one end of a change-over switch, the other ends of the external static current testing end and the change-over switch are electrically connected with the power ground 1 of a pin73 of an aviation head interface, and the power supply end of the ammeter is electrically connected with a 12V-to-5V module; the relay control circuit comprises a relay control chip, pins 1 and 2 of the relay control chip are electrically connected with a 12V regulated power supply, pins 5, 6 and 7 of the relay control chip are electrically connected with an upper computer through RS232, OUT1 of the relay control chip is electrically connected with an ignition key ACC lead wire of an aviation head interface pin5 through a relay K1, OUT2 of the relay control chip is electrically connected with a storage battery lead wire of an aviation head interface pin6 through a relay K2, OUT3, OUT4 and OUT5 of the relay control chip are electrically connected with power supply pins of USB1, USB2 and USB3 of a USB interface through relays K3, K4 and K5 respectively, pins 74 to 82 of the aviation head interface are electrically connected with a plurality of analog high/low level trigger circuits through relays K6 to K14 respectively, OUT15 of the relay control chip is electrically connected with an analog high/low level trigger circuit through a relay K15, and OUT16 of the relay control chip is electrically connected with an analog high/low level trigger circuit 1600 through a relay K16.
2. The universal automotive center control product cartridge circuit of claim 1, wherein: the analog high/low level trigger circuit comprises a boat-shaped or toggle switch, wherein the switch comprises two input pins and an output pin, one input pin is electrically connected with a positive power supply port, and the other input pin is electrically connected with a power supply ground 1 or a power supply ground 2.
3. The universal automotive center control product cartridge circuit of claim 2, wherein: the bus CAN/LIN interface circuit comprises an internal interface which is electrically connected with the CAN test box through a CAN and LIN interface, and a CAN and LIN external interface which is connected with the internal interface in parallel, wherein the internal CAN interface is provided with a terminal resistor and a selection switch, the internal CAN and LIN interface is electrically connected with the CAN and LIN terminals on the panel of the test box and corresponding pins of the aviation head interface, and the ground of the bus CAN/LIN interface circuit is electrically connected with the power ground 1.
4. A universal automotive center control product cartridge circuit as defined in claim 3, wherein: the product power supply monitoring interface comprises an ACC monitoring port, a storage battery monitoring port and a power ground 1 port, wherein the ACC monitoring port is electrically connected with a tested product and a pin5 of the aviation head interface, the storage battery monitoring port is electrically connected with a pin6 of the aviation head interface, and the power ground 1 port is electrically connected with a pin73 of the aviation head interface; the external power supply interface comprises a plurality of groups of power supply positive sockets and power supply negative sockets which are connected with the power supply input interface in parallel, and the power supply negative sockets are electrically connected with the power supply ground 3.
5. The universal automotive center control product cartridge circuit of claim 1, wherein: the product node test interface comprises nodes 1 to 8 ports which are respectively and electrically connected with a plurality of nodes in the product to be tested through pins 41 to 48 of the aviation head interface, wherein the nodes 1 to 8 ports are used for testing the product to be tested by external equipment; the user instruction testing module comprises a wire control interface or an instruction indicator lamp which are respectively and electrically connected with a plurality of wire control signals in the tested product through pins 21 to 28 of the aviation head interface.
6. The universal automotive center control product cartridge circuit of claim 1, wherein: the microphone interface comprises a plurality of groups of microphone power supply positive sockets, microphone power supply negative sockets and microphone input sockets which are electrically connected with a microphone circuit in a tested product through pins of the aviation head interface, and the microphone interface is used for testing voice functions.
7. The universal automotive center control product cartridge circuit of claim 1, wherein: the RVC interface comprises an RVC_VCC socket which is connected with the power supply positive electricity of the reversing camera through a pin33 of the aviation head interface, an RVC_GND socket which is connected with the power supply negative electricity of the reversing camera through a pin34 of the aviation head interface, a CVBS+ socket which is electrically connected with the video signal of the reversing camera through a pin35 of the aviation head interface, and a CVBS-socket which is electrically connected with the video signal of the reversing camera through a pin36 of the aviation head interface.
8. The universal automotive center control product cartridge circuit of claim 1, wherein: the sound output interface circuit comprises a plurality of groups of earphone sockets, a loudspeaker socket, a double-cutter change-over switch and an earphone matching circuit, wherein the double-cutter change-over switch is used for testing and switching between the earphone sockets and the loudspeaker socket, the input end of the earphone matching circuit is electrically connected with the double-cutter change-over switch, the output end of the earphone matching circuit is electrically connected with the earphone socket, and the double-cutter change-over switch is electrically connected with the sound output circuit of a tested product through pins 11 to 18 of an aviation head interface.
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| CN202110661645.XA CN113376464B (en) | 2021-06-15 | 2021-06-15 | Universal automobile central control product test box circuit |
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| CN202110661645.XA CN113376464B (en) | 2021-06-15 | 2021-06-15 | Universal automobile central control product test box circuit |
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| CN113376464A CN113376464A (en) | 2021-09-10 |
| CN113376464B true CN113376464B (en) | 2024-02-02 |
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