CN219038056U - Multifunctional intelligent instrument system for vehicle-standard level motorcycle - Google Patents
Multifunctional intelligent instrument system for vehicle-standard level motorcycle Download PDFInfo
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Abstract
The application relates to a multifunctional vehicle-gauge-level motorcycle intelligent instrument system which comprises a CAN bus test module, a speed test module, a first test module, a second test module, a numerical test module, a voltage test module, a camera test module and a control module respectively connected with the modules; the speed test module is used for outputting a pulse test signal when receiving the pulse control signal; the first test module is used for outputting a first test signal when receiving a first control signal; the second test module is used for outputting a second test signal when receiving a second control signal; the numerical test module is used for outputting a numerical test signal of a corresponding voltage value when receiving a group of numerical control signals; the voltage testing module is used for detecting the voltage of a camera in the motorcycle instrument; the camera shooting test module is used for outputting CVBS signals; the CAN bus test module is used for forwarding various test information. The test device can test all functions of the motorcycle instrument.
Description
Technical Field
The application relates to the field of motorcycle meters, in particular to a multifunctional intelligent meter system for a vehicle-standard motorcycle.
Background
At present, the motorcycle instrument industry commonly has the problems of difficult test or complicated test and the like. When a motorcycle is produced by a motorcycle factory in the market, because the electronic wire harness of the motorcycle body is complex, the electronic wire harness is difficult to provide comprehensive test of functional coverage for a motorcycle instrument, and then part of products are found to have defects after flowing to the market.
Disclosure of Invention
In order to test all functions of a motorcycle instrument, the application provides a multifunctional intelligent instrument system for a motorcycle with a standard class.
The application provides a multi-functional car rule level motorcycle intelligent instrument system adopts following technical scheme:
the intelligent instrument system of the multifunctional vehicle-gauge motorcycle comprises a CAN bus test module, a speed test module, a first test module, a second test module, a numerical test module, a voltage test module, a camera test module and a control module; the speed testing module, the first testing module, the second testing module and the numerical testing module are all provided with a plurality of speed testing modules;
the control module is respectively connected with the CAN bus test module, the speed test module, the first test module, the second test module, the numerical test module, the voltage test module and the camera test module;
the output end of the speed testing module is used for being connected with a motorcycle instrument, and the speed testing module is used for outputting pulse testing signals synchronous with the pulse control signals when receiving the pulse control signals with different widths output by the control module;
the output end of the first test module is used for being connected with a motorcycle instrument, the first test module is used for outputting a first test signal synchronous with a first control signal output by the control module when receiving the first control signal, and the first test signal is a low-level signal;
the output end of the second test module is used for being connected with a motorcycle instrument, and the second test module is used for outputting a second test signal when receiving a group of second control signals output by the control module, wherein the second test signal is a high-level signal;
the output end of the numerical test module is used for being connected with a motorcycle instrument, and the numerical test module is used for outputting a numerical test signal of a corresponding voltage value when receiving a group of numerical control signals output by the control module;
the voltage testing module is used for being connected with a motorcycle instrument, detecting the voltage of a camera in the motorcycle instrument and outputting a voltage detection signal;
the camera shooting test module is used for being connected with a motorcycle instrument and outputting a CVBS signal;
the output end of the CAN bus test module is used for being connected with a motorcycle instrument, and the CAN bus test module is used for forwarding various test information output by the control module.
By adopting the technical scheme, the CAN bus test module CAN send various test information to the instrument to test whether the communication function of the motorcycle instrument is normal, the speed test module CAN output pulse test signals with different widths to the motorcycle instrument so as to simulate the rotation speed and the vehicle speed of the motorcycle instrument and further test whether the rotation speed and the vehicle speed of the motorcycle instrument CAN be displayed correctly, the first test module CAN output a first test signal with low level so as to simulate the conditions of gear switching, illumination, engine oil failure, engine failure and a braking system failure, further test whether the motorcycle instrument CAN correspondingly display the conditions of gear switching, illumination, engine oil failure, engine failure and the braking system failure, the second test module CAN output a second test signal with high level so as to simulate the triggering of starting or closing an ignition wire, a left turn command, a right turn command, a far and near illumination command, a SET key and a MODE key, further test whether the motorcycle CAN correspondingly display according to the commands, the numerical test module CAN output numerical test signals with different voltage values according to numerical control signals so as to simulate the water temperature and oil quantity, and further test whether the motorcycle CAN display corresponding numerical values and normal values. The voltage testing module can detect the voltage of the camera in the motorcycle instrument, and the camera testing module can forward the CVBS signal so as to test whether the camera in the motorcycle instrument can work normally. The display capability of a plurality of functions of the motorcycle instrument can be tested, so that the functions of the motorcycle instrument can be more comprehensively covered, and all functions of the motorcycle instrument can be automatically tested.
Optionally, the speed test module includes a first switch tube, the base of the first switch tube is connected with the control module, the emitter is grounded, the collector is used for connecting an external direct current power supply to access a direct current supply voltage of a first amplitude, a resistor is arranged on a line connected with the collector and the external direct current power supply, and the first switch tube is used for outputting pulse test signals from the common end of the collector and the resistor when receiving pulse control signals of different widths output by the control module.
By adopting the technical scheme, the pulses with different widths correspond to different rotating speeds or vehicle speeds, so that the first switching tube outputs pulse test signals with different widths to the motorcycle instrument, the vehicle speed or the motor rotating speed of the motorcycle can be simulated, and further the test of the motorcycle instrument is realized.
Optionally, the first test module includes a second switch tube, the base of the second switch tube is connected with the control module, the emitter is grounded, the collector is used for being connected with the motorcycle instrument, and the second switch tube is used for outputting a low-level first test signal when receiving a high-level first control signal output by the control module.
By adopting the technical scheme, when the second switching tube outputs the first test signal with low level, the motorcycle instrument can be simulated to receive the gear switching instruction, the instruction of the engine failure and the instruction of the brake system failure, so that the motorcycle instrument can be tested.
Optionally, the second test module includes a third switch tube and a MOS tube;
the base electrode of the third switching tube is connected with the control module, the emitter electrode of the third switching tube is grounded, and the third switching tube is used for outputting a low-level transition signal when receiving a high-level second control signal;
the grid electrode of the MOS tube is connected with the collector electrode of the third switch tube, the source electrode of the MOS tube is connected with the control module, the drain electrode of the MOS tube is connected with the motorcycle instrument, and the MOS tube is used for outputting a high-level second test signal when receiving the transition signal.
Through adopting above-mentioned technical scheme, when the second test signal of third switch tube output high level, can simulate motorcycle instrument and receive about turn to instruction, far and near illumination instruction, MODE button trigger instruction and SET button trigger instruction, and then can realize the test to motorcycle instrument.
Optionally, the numerical test module includes a plurality of fourth switching tubes, and the base of every fourth switching tube all is connected with control module, and the projecting pole of every fourth switching tube all is connected with ground, and the collecting electrode of every fourth switching tube all is connected with a resistor, and the two liang of parallelly connected of collecting electrodes of all fourth switching tubes, the fourth switching tube is used for when receiving numerical control signal, the numerical test signal of fixed voltage value is output.
By adopting the technical scheme, when the fourth switching tubes with different numbers are controlled to be conducted, the voltage values represented by the numerical test signals are also different. The numerical test signals with different voltage values can simulate the water temperature or the oil quantity of the motorcycle, and further can realize the test of the motorcycle instrument.
Optionally, the voltage testing module comprises a first voltage dividing resistor and a second voltage dividing resistor which are connected in series, wherein the free end of the first voltage dividing resistor is used for being connected with a motorcycle instrument, the free end of the second voltage dividing resistor is grounded, and the common end of the first voltage dividing resistor and the common end of the second voltage dividing resistor output a voltage detection signal.
Through adopting above-mentioned technical scheme, utilize first bleeder resistor and the second bleeder resistor of series connection can accurately gather the voltage of camera in the motorcycle instrument, and then can detect whether the voltage of camera is normal.
Optionally, the CAN bus test module includes a CAN transceiver chip, a TXD pin and a RXD pin of the CAN transceiver chip are both connected to the control module, a VCC pin of the CAN transceiver chip is used for connecting to an external dc power supply to access to a dc supply voltage of a third amplitude, a CANH pin and a CANL pin of the CAN transceiver chip are respectively used for connecting to a motorcycle instrument, and a VIO pin of the CAN transceiver chip is used for accessing to a dc supply voltage of a second amplitude.
Optionally, the CANH pin and the CANL pin of the CAN transceiver chip are respectively connected with a set of coils of a common mode inductance.
By adopting the technical scheme, the common mode inductor can remove electromagnetic interference in the information interaction process.
In summary, the present application includes at least one of the following beneficial technical effects:
according to the method, the CAN bus test module CAN send various test information to the instrument to test whether the communication function of the motorcycle instrument is normal or not, the speed test module CAN output pulse test signals with different widths to the motorcycle instrument so as to simulate the rotation speed and the vehicle speed of the motorcycle, further, whether the rotation speed and the vehicle speed of the motorcycle instrument CAN be correctly displayed or not is tested, the first test module CAN output first test signals with low levels so as to simulate the conditions of gear switching, illumination, engine oil faults, and faults of a braking system, further, the motorcycle instrument CAN correspondingly display the conditions of gear switching, illumination, engine oil faults, engine faults and faults of the braking system, the second test module CAN output second test signals with high levels so as to simulate the triggering of starting or closing an ignition wire, a left turn instruction, a right turn instruction, a far-near illumination instruction, a SET key and a MODE key, further, the motorcycle CAN be correspondingly displayed or not is tested, the numerical test module CAN output numerical test signals representing different voltage values according to numerical control signals so as to simulate the conditions of water temperature and oil quantity and the motorcycle instrument to display corresponding numerical values. The voltage testing module can detect the voltage of the camera in the motorcycle instrument, and the camera testing module can forward the CVBS signal so as to test whether the camera in the motorcycle instrument can work normally. The display capability of a plurality of functions of the motorcycle instrument can be tested, so that the functions of the motorcycle instrument can be more comprehensively covered, and all functions of the motorcycle instrument can be automatically tested.
Drawings
FIG. 1 is a system schematic diagram of a portion of a system of a multi-function vehicle gauge motorcycle intelligent instrument system in accordance with an embodiment of the present application.
Fig. 2 is a system schematic diagram of another part of the system of the intelligent instrument system of the multifunctional vehicle-standard motorcycle in the embodiment of the application.
Reference numerals illustrate: 1. a CAN bus test module; 2. a speed testing module; 3. a first test module; 4. a second test module; 5. a numerical value test module; 6. a voltage testing module; 7. a CVBS video generator; 8. a control module; 9. a motorcycle instrument.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to fig. 1-2 and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The embodiment of the application discloses a multifunctional intelligent instrument system for a vehicle-standard motorcycle.
Referring to fig. 1 and 2, the intelligent instrument system of the multifunctional vehicle-gauge motorcycle comprises a CAN bus test module 1, a speed test module 2, a first test module 3, a second test module 4, a numerical test module 5, a voltage test module 6, a camera test module and a control module 8, and CAN simulate motorcycles under different states or instructions, so as to more comprehensively test the motorcycle instrument 9, thereby realizing automatic test, enabling the motorcycle instrument 9 to meet quality requirements and be sold in a factory.
The control module 8 is configured to sequentially output a plurality of control signals according to a preset test sequence. Preferably, the control module 8 is a single chip microcomputer, an FPGA or a CPU chip.
The speed testing module 2 is connected with the control module 8, and the output end of the speed testing module is used for being connected with the motorcycle instrument 9. The speed testing module 2 is used for receiving the pulse control signals with different widths output by the control module and outputting pulse testing signals synchronous with the pulse control signals when receiving the pulse control signals.
Specifically, the speed test module 2 includes a first switching tube Q1 and a plurality of resistors. Wherein the resistor R1 and the resistor R2 are connected in series, the free end of the resistor R1 is connected to the control module 8, and the free end of the resistor R2 is grounded. The base electrode of the first switching tube Q1 is connected with the common end of the resistor R1 and the resistor R2, the emitter electrode is grounded, and the collector electrode is used for being connected with an external direct current power supply so as to be connected with a direct current supply voltage of a first amplitude. A resistor R3 is also provided on the line where the collector is connected to an external dc power supply. The collector is connected as an output to a motorcycle gauge 9. A resistor R4 is also provided on the line connecting the collector with the motorcycle gauge 9.
In this application, the first switching tube Q1 is preferably an NPN transistor, and the working process of the speed testing module 2 is: when the base electrode of the first switching tube Q1 is connected with a low-level signal, the first switching tube Q1 is in an off state. At this time, the collector of the first switching transistor Q1 outputs a high level signal. Conversely, when the base of the first switching tube Q1 inputs a high level signal, the first switching tube Q1 is in a conductive state. At this time, the collector of the first switching transistor Q1 outputs a low level signal. From this, it is clear that when the base of the first switching tube Q1 is connected to the pulse control signal with a predetermined width, the pulse test signal output from the collector of the first switching tube Q1 will have a low level signal with the same width. Because the pulse test signals with different widths correspond to different speeds, the speed of the motorcycle can be simulated by controlling the pulse width of the pulse control signal output by the control module 8, and further the speed display function in the motorcycle instrument 9 can be tested. Preferably, the first magnitude of the dc supply voltage is 12V.
The speed test module 2 further includes a capacitor C1 in consideration of the fact that noise of the external dc power source may interfere with the waveform of the output pulse test signal during the test. One end of the capacitor C1 is respectively connected with the collector electrode of the first switching tube Q1 and the resistor R4, and the other end is grounded.
In the embodiment of the application, two speed testing modules 2 are provided, one speed testing module 2 is used for testing the speed display function on the motorcycle instrument 9, and the other speed testing module 2 is used for testing the motor speed display function on the motorcycle instrument 9.
The first test module 3 is connected with the control module 8, the output end of the first test module 3 is used for being connected with the motorcycle instrument 9, the first test module 3 is used for receiving a first control signal output by the control module 8, and the first test module is used for outputting a first test signal synchronous with the first control signal when receiving the first control signal. Wherein the first test signal is a low signal, since the display of some functions in the motorcycle gauge 9 is triggered by a low signal.
Specifically, the first test module 3 includes a second switching tube Q2 and a plurality of resistors. Wherein, the resistor R5 and the resistor R6 are connected in series, the free end of the resistor R5 is connected with the control module 8, and the free end of the resistor R6 is grounded. The base of the second switching tube Q2 is connected with the common end of the resistor R5 and the resistor R6, the emitter is grounded, the collector is connected with one end of the resistor R7 as an output end, and the other end of the resistor R7 is connected with the motorcycle instrument 9.
In this application, the second switching tube Q2 is an NPN transistor, and the working process of the first test module 3 is: when the base electrode of the second switching tube Q2 is connected with a low-level signal, the second switching tube Q2 is in an off state. At this time, the collector of the second switching transistor Q2 outputs a high level signal. Conversely, when the base of the second switching tube Q2 inputs a high level signal, the second switching tube Q2 is in a conductive state. At this time, the collector of the second switching transistor Q2 outputs a low level signal. Therefore, only when the second switching tube Q2 is connected to the high-level signal, i.e. the first control signal, can the low-level signal be output, i.e. the first test signal, so as to simulate part of the functions of the motorcycle, thereby realizing the test of the corresponding display function in the motorcycle instrument 9.
Preferably, the first test module 3 is also provided with a plurality of display functions for testing the motorcycle meter 9 when switching to different gear positions, for testing the display function of the motorcycle meter 9 when illuminating, for testing the display function of the motorcycle meter 9 when engine oil of the motorcycle fails, for testing the display function of the motorcycle meter 9 when an engine of the motorcycle fails, and for testing the display function of the motorcycle meter 9 when a brake system of the motorcycle fails, respectively.
The second test module 4 is connected to the control module 8, and its output end is used for being connected to the motorcycle instrument 9, and the second test module 4 is used for receiving a set of second control signals output by the control module 8, and is used for outputting a second test signal when receiving a set of second control signals. Wherein the second test signal is a high signal, since the display of some functions in the motorcycle gauge 9 is triggered by a high signal.
Specifically, the second test module 4 includes a third switching tube Q3, a MOS tube Q4, and a plurality of resistors. The base of the third switching tube Q3 is connected to a resistor R8, and the free end of the resistor R8 is connected to the control module 8. The third switching transistor Q3 has an emitter grounded and a collector connected to the resistor R9. The grid electrode of the MOS tube Q4 is connected with the free end of the resistor R9, the source electrode is connected with the control module 8, and the drain electrode is connected with the motorcycle instrument 9. The resistor R10 is connected in parallel between the gate and the source of the MOS transistor Q4. One end of the resistor R11 is connected with the drain electrode of the MOS tube Q4, and the other end is grounded.
In the present application, the third switching transistor Q3 is preferably an NPN transistor, and the MOS transistor Q4 is a P-channel MOS transistor. The working process of the second test module 4 is as follows: when the base electrode of the third switching tube Q3 is connected with a low-level signal, the third switching tube Q3 is in an off state. At this time, the collector of the third switching tube Q3 outputs a high level signal, so that the MOS tube Q4 is turned off, and the drain of the MOS tube Q4 outputs a low level signal. Conversely, when the base of the third switching tube Q3 inputs a high level signal, the third switching tube Q3 is in a conductive state. At this time, the collector of the third switching tube Q3 outputs a low-level signal, i.e., an excessive signal, so that the MOS tube Q4 is turned on, and the drain of the MOS tube Q4 outputs a high-level signal. The source electrode of the MOS transistor Q4 is connected with a high-level signal. Only when the source electrode of the MOS transistor Q4 and the third switch transistor Q3 are simultaneously connected to the high-level signal, i.e. receive a set of first control signals, the MOS transistor Q4 can output the high-level signal, i.e. the second test signal, so as to simulate part of the functions of the motorcycle, and further realize testing the corresponding display functions in the motorcycle instrument 9.
Considering that during the test, the current flowing through the source of the MOS transistor Q4 may flow back, the second test module 4 further includes a diode D1. The cathode of the diode D1 is connected with the source electrode of the MOS tube Q4, and the anode is connected with the control module 8. Likewise, the second test module 4 further comprises a capacitor C2 and a capacitor C3, taking into account disturbances in the circuit that occur to the second test signal. One end of the capacitor C2 is respectively connected with the drain electrode of the MOS tube Q4 and the resistor R11, and the other end is grounded. One end of the capacitor C3 is respectively connected with the drain electrode of the MOS tube Q4 and the resistor R11, and the other end is grounded. In addition, a fuse PTC is provided on the line connecting the drain of the MOS transistor Q4 and the motorcycle meter 9.
Preferably, the second test module 4 is also provided with a plurality of test modules for testing the display function of the motorcycle meter 9 when the ignition wire is started or closed, for testing the display function of the motorcycle meter 9 when the left and right turns, for testing the display function of the motorcycle meter 9 when the near and far illumination, for testing the display function of the motorcycle meter 9 when the SET button of the motorcycle is triggered, and for testing the display function of the motorcycle meter 9 when the MODE button of the motorcycle is triggered, respectively.
The numerical test module 5 is connected with the control module 8, and the output end of the numerical test module is used for being connected with the motorcycle instrument 9. The numerical test module 5 is configured to receive a set of numerical control signals output by the control module 8, and output a numerical test signal of a corresponding voltage value when receiving the set of numerical control signals.
Specifically, the numerical test module 5 includes a plurality of fourth switching tubes and a plurality of resistors. Wherein the base of each fourth switching tube is connected to a resistor, the free end of which is connected to the control module 8. The emitter of each fourth switching tube is grounded, the collector of each fourth switching tube is connected with another resistor, and the collectors of all fourth switching tubes are connected in parallel in pairs.
In this application, the fourth switching transistor is preferably an NPN transistor. The working process of the numerical test module 5 is as follows: since the arrangement of each fourth switching tube is the same, a fourth switching tube will be described as an example. When the base electrode of the fourth switching tube Q5 is connected with a low-level signal, the fourth switching tube Q5 is in an off state. At this time, the collector of the fourth switching tube Q5 outputs a high level signal. Conversely, when the base of the fourth switching tube Q5 inputs a high level signal, the fourth switching tube Q5 is in a conductive state. At this time, the collector of the fourth switching tube Q5 outputs a low level signal, i.e., a numerical test signal of a fixed voltage value. It should be noted that, the numerical control signal is output by the output ends connected with all the fourth switching tubes on the control module 8, that is, the number of output ends of the control module 8 outputting the high-level signal is different, and the voltage values corresponding to the numerical test signals output by the common ends of the collectors of all the fourth switching tubes are different. Every time one more fourth switching tube is conducted, the voltage value corresponding to the numerical test signal output by the common end of the collector electrodes of all the fourth switching tubes is increased. Therefore, by controlling a group of numerical control signals output by the control module 8, the fourth switching tubes with different numbers can be controlled to be conducted so as to output numerical test signals with different voltage values, so that part of functions of the motorcycle can be simulated, and the corresponding display functions in the motorcycle instrument 9 can be tested.
Preferably, the numerical test module 5 is also provided with two. One of the numerical test modules 5 is used for testing the water temperature display function on the motorcycle instrument 9, and the other numerical test module 5 is used for testing the oil quantity display function on the motorcycle instrument 9.
The voltage testing module 6 is used for being connected with a motorcycle instrument 9, and the output end of the voltage testing module is connected with the control module 8. The voltage testing module 6 is used for detecting the voltage of a camera in the motorcycle instrument 9 and outputting a voltage detection signal.
Specifically, the voltage test module 6 includes a plurality of resistors. Wherein, a first voltage dividing resistor R12 and a second voltage dividing resistor R13 are connected in series, the free end of the first voltage dividing resistor R12 is connected with the motorcycle instrument 9, and the free end of the second voltage dividing resistor R13 is grounded. The common terminal of the first voltage dividing resistor R12 and the second voltage dividing resistor R13 outputs a voltage detection signal. It can be appreciated that when the control module 8 receives the voltage detection signal, it can determine that the camera in the motorcycle instrument 9 can work normally according to the voltage value reflected by the voltage detection signal.
In order to ensure that the voltage detection signal is not disturbed by the outside, the voltage testing module 6 further comprises a capacitor C4 and a regulator D2. One end of the capacitor C4 is connected to the common terminal of the first voltage dividing resistor R12 and the second voltage dividing resistor R13, and the other end is grounded. The cathode of the voltage stabilizing tube D2 is connected with the common terminal of the first voltage dividing resistor R12 and the second voltage dividing resistor R13, and the anode is grounded.
In the present application, a plurality of voltage test modules 6 are provided, and the number of voltage test modules 6 depends on the number of cameras, i.e. one camera corresponds to each voltage test module 6.
The camera test module is connected with the control module 8, and the output end of the camera test module is used for being connected with the motorcycle instrument 9. The camera test module is used for controlling the control module 8 to output CVBS signals.
Preferably, the camera test module is a CVBS video generator 7. The CVBS video generator 7 is configured to output a CVBS signal to test a camera in the motorcycle gauge 9 upon receiving the image pickup control signal output from the control module 8.
Also, in the present application, a plurality of camera test modules are also provided, and the number of camera test modules depends on the number of cameras, i.e. each camera test module corresponds to one camera.
The CAN bus test module 1 is connected with the control module 8, and the output end of the CAN bus test module is used for being connected with the motorcycle instrument 9, receiving various test information output by the control module 8 and forwarding the various test information to the motorcycle instrument 9 when receiving the various test information.
Specifically, the CAN bus test module 1 includes a CAN transceiver chip and its peripheral circuits. The VCC pin of the CAN transceiver chip is used for being connected with an external direct-current power supply to be connected with a direct-current power supply voltage with a second amplitude. In order to eliminate noise interference caused by an external direct current power supply, a magnetic bead is further arranged on a circuit, connected with the external direct current power supply, of the VCC pin, a capacitor C5 is further connected to the VCC pin, and the free end of the capacitor C5 is grounded. The VIO pin of the CAN transceiver chip is connected with a resistor R14, and the free end of the resistor R14 is used for being connected with an external direct current power supply so as to be connected with a direct current power supply voltage with a third amplitude. Meanwhile, the VIO pin is also connected with a capacitor C6 to eliminate noise brought by an external direct current power supply. The GND pin of the CAN transceiver chip is grounded. Preferably, the dc supply voltage of the second magnitude is 5V and the dc supply voltage of the third magnitude is 3.3V.
Further, the CANH pin and the CANL pin are respectively connected with the motorcycle instrument 9, and the RXD pin and the TXD pin are respectively connected with the control module 8. It will be appreciated that when the control module 8 outputs test information, the RXD pin receives the test information and outputs it from the CANH pin and CANL pin into the motorcycle gauge 9. On the contrary, when the motorcycle instrument 9 feeds back the test information, the CANH pin and the CANL pin receive the fed back test information and output the test information to the control module 8 through the TXD pin so as to simulate the information interaction process between the motorcycle instrument 9 and a motorcycle body or other systems, and further realize the test of the CAN bus communication function of the motorcycle instrument 9.
Considering electromagnetic interference caused by a differential mode loop in the information interaction process, the CANH pin and the CANL pin are also connected with a common mode inductance L1. Specifically, the first set of coils in the common-mode inductance L1 has one end connected to the CANH pin and one end connected to the motorcycle gauge 9. One end of the second group of coils is connected with the CANL pin, and one end is connected with the motorcycle instrument 9. And removing electromagnetic interference in the information interaction process. In series, resistor R15 connects the CANH pin to the common of the first set of coils and resistor R16 connects the CANL pin to the common of the second set of coils. The CANH pin, CANL pin and the common terminal of the resistor R15 and the resistor R16 are respectively connected with a capacitor, and the free end of the capacitor is grounded.
Furthermore, the STB pin of the CAN transceiver chip is connected to a resistor R17 and a resistor R18, respectively, the free end of the resistor R17 is used for accessing a high level signal, and the free end of the resistor R18 is grounded. Only when the STB pin is connected with a high-level signal, the CAN transceiver chip CAN enter a dormant state, otherwise, the CAN transceiver chip is in a normal working state.
The implementation principle of the intelligent instrument system of the multifunctional vehicle-standard motorcycle is as follows: through setting up CAN bus test module 1, speed test module 2, first test module 3, second test module 4, numerical value test module 5, voltage test module 6, make a video recording test module and control module 8 to simulate the motorcycle under different states or the instruction, and then realize carrying out comprehensive test to motorcycle instrument 9, make motorcycle instrument 9 quality when leaving the factory ensured.
The foregoing description of the preferred embodiments of the present application is not intended to limit the scope of the application, in which any feature disclosed in this specification (including abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Claims (8)
1. A multifunctional vehicle-gauge motorcycle intelligent instrument system is characterized in that: the intelligent controller area network comprises a CAN bus test module (1), a speed test module (2), a first test module (3), a second test module (4), a numerical test module (5), a voltage test module (6), a camera test module and a control module (8); the speed testing module (2), the first testing module (3), the second testing module (4) and the numerical testing module (5) are all provided with a plurality of speed testing modules;
the control module (8) is respectively connected with the CAN bus test module (1), the speed test module (2), the first test module (3), the second test module (4), the numerical test module (5), the voltage test module (6) and the camera test module;
the output end of the speed testing module (2) is used for being connected with a motorcycle instrument (9), and the speed testing module (2) is used for outputting pulse testing signals synchronous with pulse control signals with different widths when receiving the pulse control signals output by the control module (8);
the output end of the first test module (3) is used for being connected with a motorcycle instrument (9), the first test module (3) is used for outputting a first test signal synchronous with a first control signal output by the control module (8) when receiving the first control signal, and the first test signal is a low-level signal;
the output end of the second test module (4) is used for being connected with a motorcycle instrument (9), and the second test module (4) is used for outputting a second test signal when receiving a group of second control signals output by the control module (8), wherein the second test signal is a high-level signal;
the output end of the numerical test module (5) is used for being connected with a motorcycle instrument (9), and the numerical test module (5) is used for outputting a numerical test signal of a corresponding voltage value when receiving a group of numerical control signals output by the control module (8);
the voltage testing module (6) is used for being connected with the motorcycle instrument (9), and is used for detecting the voltage of a camera in the motorcycle instrument (9) and outputting a voltage detection signal;
the camera shooting test module is used for being connected with a motorcycle instrument (9), and is used for outputting CVBS signals;
the output end of the CAN bus test module (1) is used for being connected with a motorcycle instrument (9), and the CAN bus test module (1) is used for forwarding various test information output by the control module (8).
2. The intelligent meter system for a multi-functional vehicle-standard motorcycle according to claim 1, wherein: the speed testing module (2) comprises a first switching tube, a base electrode of the first switching tube is connected with the control module (8), an emitter electrode is grounded, a collector electrode is connected with an external direct current power supply to be connected with a direct current power supply voltage with a first amplitude, a resistor is arranged on a circuit connected with the collector electrode and the external direct current power supply, and the first switching tube is used for outputting pulse testing signals at a common end of the collector electrode and the resistor when receiving pulse control signals with different widths output by the control module (8).
3. The intelligent meter system for the multi-functional vehicle-standard motorcycle according to claim 2, wherein: the first test module (3) comprises a second switch tube, the base electrode of the second switch tube is connected with the control module (8), the emitter electrode of the second switch tube is grounded, the collector electrode of the second switch tube is connected with the motorcycle instrument (9), and the second switch tube is used for outputting a low-level first test signal when receiving a high-level first control signal output by the control module (8).
4. A multi-function vehicle gauge motorcycle intelligent instrument system according to claim 3, wherein: the second test module (4) comprises a third switch tube and an MOS tube;
the base electrode of the third switching tube is connected with the control module (8), the emitter electrode of the third switching tube is grounded, and the third switching tube is used for outputting a low-level transition signal when receiving a high-level second control signal;
the grid electrode of the MOS tube is connected with the collector electrode of the third switch tube, the source electrode of the MOS tube is connected with the control module (8), the drain electrode of the MOS tube is connected with the motorcycle instrument (9), and the MOS tube is used for outputting a high-level second test signal when receiving the transition signal.
5. The intelligent meter system for the multi-functional vehicle-standard motorcycle according to claim 4, wherein: the numerical test module (5) comprises a plurality of fourth switching tubes, the base electrode of each fourth switching tube is connected with the control module (8), the emitter electrode of each fourth switching tube is grounded, the collector electrode of each fourth switching tube is connected with a resistor, the collector electrodes of all fourth switching tubes are connected in parallel in pairs, and the fourth switching tubes are used for outputting numerical test signals with fixed voltage values when receiving numerical control signals.
6. The intelligent meter system for the multi-functional vehicle-standard motorcycle according to claim 5, wherein: the voltage testing module (6) comprises a first voltage dividing resistor and a second voltage dividing resistor which are connected in series, wherein the free end of the first voltage dividing resistor is used for being connected with a motorcycle instrument (9), the free end of the second voltage dividing resistor is grounded, and the common end of the first voltage dividing resistor and the common end of the second voltage dividing resistor output a voltage detection signal.
7. The intelligent meter system for the multi-functional vehicle-standard motorcycle according to claim 6, wherein: the CAN bus test module (1) comprises a CAN transceiver chip, a TXD pin and a RXD pin of the CAN transceiver chip are both connected with the control module (8), a VCC pin of the CAN transceiver chip is used for being connected with an external direct current power supply so as to be connected with a direct current power supply voltage with a third amplitude, a CANH pin and a CANL pin of the CAN transceiver chip are respectively used for being connected with a motorcycle instrument (9), and a VIO pin of the CAN transceiver chip is used for being connected with the direct current power supply voltage with a second amplitude.
8. The intelligent meter system for the multi-functional vehicle-standard motorcycle according to claim 7, wherein: and a CANH pin and a CANL pin of the CAN transceiver chip are respectively connected with a group of coils of a common mode inductor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223361735.6U CN219038056U (en) | 2022-12-13 | 2022-12-13 | Multifunctional intelligent instrument system for vehicle-standard level motorcycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223361735.6U CN219038056U (en) | 2022-12-13 | 2022-12-13 | Multifunctional intelligent instrument system for vehicle-standard level motorcycle |
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| CN219038056U true CN219038056U (en) | 2023-05-16 |
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| CN202223361735.6U Active CN219038056U (en) | 2022-12-13 | 2022-12-13 | Multifunctional intelligent instrument system for vehicle-standard level motorcycle |
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