CN104240334A - Pulse signal recorder for automobile and automobile detecting equipment - Google Patents
Pulse signal recorder for automobile and automobile detecting equipment Download PDFInfo
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- CN104240334A CN104240334A CN201410520272.4A CN201410520272A CN104240334A CN 104240334 A CN104240334 A CN 104240334A CN 201410520272 A CN201410520272 A CN 201410520272A CN 104240334 A CN104240334 A CN 104240334A
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Abstract
The invention proposes a pulse signal recorder for an automobile and automobile test equipment. The pulse signal recorder comprises a level-matching circuit used for level-switching a pulse signal, an interactive interface used for receiving a user instruction, and a control unit which is respectively connected with the level-matching circuit and the interactive interface, wherein the control unit is used for working according to the user instruction and compiling the pulse signal in the process of working to obtain and record pulse data; the pulse data comprise a pulse type and triggering time. Through the adoption of the pulse signal recorder disclosed by the embodiment of the invention, the pulse signal of an electric appliance for the automobile can be acquired, whether the electric appliance for the automobile is failed or not can be analyzed according to the pulse data, the time for checking the failure of the automobile is shortened, and the testing efficiency for the automobile is improved.
Description
Technical field
The present invention relates to automobile technical field, particularly a kind of vehicle pulse signal recorder and vehicle equipment.
Background technology
Current automobile primary will use onboard diagnostic system OBD (On-Board Diagnostic) to identify may exist the region of fault, and with the mode of failure code by this information storage in ECU (Electrical Control Unit) storer.But along with the development of automobile industry, on automobile, electric component gets more and more, mutual correlation logic also becomes increasingly complex.A lot of electric component uses pulse signal, but if some module sends the function that the pulse signal not meeting logic will have influence on other modules, affects the overall performance of car load further.And these rub-out signals randomness when real steering vectors is larger, being generally also difficult to trigger, is more likely individual pulse signal.For these pulse signals, be difficult to catch by oscillograph.To sum up, OBD system can only identify the fault pre-established, and can not effectively identify chance failure.
Summary of the invention
The present invention is intended at least one of solve the problems of the technologies described above.
For this reason, one object of the present invention is to propose a kind of vehicle pulse signal recorder.This vehicle pulse signal recorder, can capture the pulse signal of electrical apparatus for vehicle use, thus provides foundation for the malfunction elimination of vehicle, saves the malfunction elimination time of automobile.
Another object of the present invention is to propose a kind of vehicle equipment.
To achieve these goals, the embodiment of a first aspect of the present invention discloses a kind of vehicle pulse signal recorder, comprising: electrical level matching circuit, and described electrical level matching circuit is used for pulse signals and carries out level conversion; Interactive interface, described interactive interface is for receiving user instruction; And control module, described control module is connected with described interactive interface with described electrical level matching circuit respectively, described control module is used for carrying out work according to described user instruction, and in the course of the work described pulse signal is edited, obtain and recording impulse data, wherein, described pulse data comprises pulse pattern and triggered time.
According to the vehicle pulse signal recorder of the embodiment of the present invention, electrical level matching circuit can capture the pulse signal of electrical apparatus for vehicle use, and be converted to the level signal being suitable for control module process, then by control module recording impulse data, thus electrical apparatus for vehicle use can be analyzed according to pulse data and whether there is fault.
In addition, vehicle pulse signal recorder according to the above embodiment of the present invention can also have following additional technical characteristic:
In some instances, described control module is edited described pulse signal, obtains and recording impulse data, comprising: the rising edge and the negative edge that detect described pulse signal, and when rising edge and the negative edge of described pulse signal being detected, record described pulse pattern and triggered time.
In some instances, described control module is also for reappearing described pulse signal according to described pulse pattern and triggered time.
In some instances, described control module comprises: input capture port and the (I/O of I/O port, input/output), described control module catches the pulse signal sent from described electrical level matching circuit by described input capture port, described pulse signal is sent to described electrical level matching circuit by described I/O port by described control module, and is exported the described pulse signal reappeared by described electrical level matching circuit.
In some instances, also comprise: (controller local area network, Controller Area Network transceiver, described CAN transceiver is connected with described control module CAN.
In some instances, also comprise: memory module, described memory module is connected with described control module, for storing described pulse data, described control module is connected with described memory module by described high-capacity memory cards SDHC port (Secure Digital High Capacity).
In some instances, described memory module is SD card (full digital code card, Secure Digital Memory Card).
In some instances, also comprise: power management module, described power management module is used for powering for described vehicle pulse signal recorder.
In some instances, described control module also comprises: USB port (USB (universal serial bus), Universal Serial Bus), for realizing the connection with peripherals.
The embodiment of second aspect present invention discloses a kind of vehicle equipment, comprising: the vehicle pulse signal recorder as described in the embodiment of above-mentioned first aspect.This vehicle equipment can capture the pulse signal of electrical apparatus for vehicle use, and analyzes such as electrical apparatus for vehicle use according to pulse data and whether there is fault.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structured flowchart of vehicle pulse signal recorder according to an embodiment of the invention;
Fig. 2 is the structured flowchart of vehicle pulse signal recorder in accordance with another embodiment of the present invention; And
Fig. 3 is that vehicle pulse signal recorder carries out the procedure chart of pulse signal record according to an embodiment of the invention.
Reference numeral: vehicle pulse signal recorder 100, electrical level matching circuit 110, interactive interface 120, control module MCU, input capture port one 31, I/O port one 32, CAN port one 33, SDHC port one 34, USB port 135, CAN transceiver 140, memory module 150, power management module 160.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Below in conjunction with accompanying drawing description according to the vehicle pulse signal recorder of the embodiment of the present invention and vehicle equipment.
Fig. 1 is the structured flowchart of vehicle pulse signal recorder according to an embodiment of the invention.As shown in Figure 1, vehicle pulse signal recorder 100 according to an embodiment of the invention, comprising: electrical level matching circuit 110, interactive interface 120 and control module MCU (Micro Control Uni).
Wherein, electrical level matching circuit 11 carries out level conversion for pulse signals.Interactive interface 120 is for receiving user instruction.Control module MCU is connected with interactive interface 120 with electrical level matching circuit 110 respectively, control module MCU is used for carrying out work according to user instruction, and pulse signals is edited in the course of the work, obtains and recording impulse data, wherein, pulse data comprises pulse pattern and triggered time.Wherein, control module MCU pulse signals is edited, and obtains and recording impulse data, specifically comprises: the rising edge and the negative edge that detect pulse signal, and when rising edge and the negative edge of pulse signal being detected, recording impulse type and triggered time.Further, control module MCU also can reappear pulse signal according to pulse pattern and triggered time.
According to the vehicle pulse signal recorder of the embodiment of the present invention, electrical level matching circuit can capture the pulse signal of electrical apparatus for vehicle use, and be converted to the level signal being suitable for control module process, then by control module recording impulse data, thus electrical apparatus for vehicle use can be analyzed according to pulse data and whether there is fault.
As a concrete example, as shown in Figure 2, control module MCU comprises: input capture port one 31 and I/O port one 32, control module MCU catches the pulse signal sent from electrical level matching circuit 110 by input capture port one 31, pulse signal is sent to electrical level matching circuit 110 by I/O port one 32 by control module MCU, and exports the pulse signal of reproduction by electrical level matching circuit 110.
Shown in composition graphs 2, vehicle pulse signal recorder 100 also comprises: CAN transceiver 140, and CAN transceiver 140 is connected with control module MCU.Wherein, control module MCU has CAN port one 33.Be connected with CAN transceiver 140 by CAN port one 33.
Further, vehicle pulse signal recorder 100 also comprises: memory module 150, and memory module 150 is connected with control module MCU, and for storage pulse data, control module MCU is connected with memory module 150 by SDHC port one 34.As shown in Figure 2, memory module 150 is but is not limited to SD card.In addition, control module MCU also comprises: USB port 135.For realizing the connection with peripherals (as personal computer PC).
Again shown in composition graphs 2, vehicle pulse signal recorder 100 also comprises: power management module 160, and power management module 160 is for powering for vehicle pulse signal recorder.
Vehicle pulse signal recorder 100 shown in composition graphs 1 and Fig. 2, the principle of work of the recording impulse data of the vehicle pulse signal recorder 100 of the embodiment of the present invention is as follows:
1, connect vehicle pulse signal recorder 100, make registering instrument work by interactive interface 120, wherein, interactive interface 120 has man-machine interaction button, control operation can be carried out to vehicle pulse signal recorder 100.
2, when vehicle pulse signal recorder 100 works, when electrical apparatus for vehicle use pulse signal is input to vehicle pulse signal recorder 100, the pulse signal of input cannot directly receive MCU, electrical level matching circuit 110 pulse signals is needed to carry out level conversion, the level that MCU can bear is converted to by electrical level matching circuit 110, then be input to the input capture port one 31 of MCU, carry out pulse capture.
3, when the input capture port one 31 of MCU captures level signal edge transition, can triggered interrupts function.
4, MCU enters interrupt function, after entering interrupt function, record the COUNT of current triggered interrupts timer and record the triggered time, then by interrupting the edge type that can judge current triggering, and current PRF is numbered, then stored in internal memory, as in effumability random access memory ram (RamdomAccessMemory).
5, have no progeny in MCU exits, the pulse data that RAM inediting is good can be write in such as SD card.Like this, the record of pulse data is realized.
Vehicle pulse signal recorder 100 again shown in composition graphs 1 and Fig. 2, the principle that embodiments of the invention carry out the reproduction of pulse signal is as follows:
1, the pulse data needing to reappear is selected by interactive interface 120.
2, MCU by a part of digital independent of using at first in SD card in the RAM of MCU, to the register of the triggered interrupts of timer after then the number of the timer COUNT recorded in individual pulse being calculated by conversion.
3, in the interrupt function of timer, current pulse signal is input to I/O port one 32, then according to the triggered time of the pulse signal recorded in pulse data, next pulse signal is input to I/O port one 32.Constantly repeat until all pulse data end of outputs.
4, when exiting interruption, MCU constantly reads in the pulse data in SD card, is then stored in RAM, provides like this and interrupts data endlessly, until end-of-pulsing.
As shown in Figure 3, the course of work of the vehicle pulse signal recorder 100 of the embodiment of the present invention is as follows:
1, first vehicle pulse signal recorder 100 carries out initialization after powering on.
2, after initialization completes, whether display interactive interface 120, detect and have pulse signal to input, and if any Puled input, recording impulse, as no pulse input continues monitoring pulse signal.
3, during recording pulse signal, utilize Edge check interrupt function, recording impulse type and triggered time, and these information are stored in RAM, the SD of initialization simultaneously card, such as: when the information stored in RAM is more than 512, by all pulse data write SD cards, if the USB port 135 of vehicle pulse signal recorder 100 is connected to PC end, then the pulse data backup portion of write SD card can be issued PC end.When performing write activity, judge whether that ESC Escape is pressed, as ESC Escape is pressed, vehicle pulse signal recorder 100 interrupts write activity, returns interactive interface 120 and continues monitoring pulse signal, as not having ESC Escape to press, then continues to perform write activity.
4, in the process of recording impulse, be connected if interactive interface 120 is held with PC by USB port 135, now can select to check and delete the pulse data stored in SD card.When selecting to reappear pulse, such as: first initialization SD card, first 1024 of pulse data are read in RAM, and initialize Timer interrupt function, interrupt function is utilized pulse to be outputted on I/O port, thus reproduction pulse, when afterpulse number in SD card be zero or ESC Escape by present, this process terminates.When selecting to delete pulse in SD card, first selecting the pulse title needing to delete, after initialization SD card, deleting corresponding pulses and storing data, deleting after terminating, return initial interactive interface.
According to the vehicle pulse signal recorder of the embodiment of the present invention, the pulse signal needing the electrical apparatus for vehicle use of record to send can be captured, then recording impulse data, and can facilitate, directly reappear pulse signal, like this can by analyzing the pulse signal reappeared, judge whether electrical apparatus for vehicle use breaks down, and, for the reproduction of pulse signal, do not need to carry out repetitious test (such as: in correlation technique to vehicle, in order to reappear pulse signal, need carry out test repeatedly to vehicle and again obtain similar pulse signal), thus improve the testing efficiency of vehicle.
Further embodiment of the present invention provides a kind of vehicle equipment, comprising: the vehicle pulse signal recorder described in embodiment described above.This vehicle equipment can capture the pulse signal of electrical apparatus for vehicle use, and analyzes such as electrical apparatus for vehicle use according to pulse data and whether there is fault.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalency thereof.
Claims (10)
1. a vehicle pulse signal recorder, is characterized in that, comprising:
Electrical level matching circuit, described electrical level matching circuit is used for pulse signals and carries out level conversion;
Interactive interface, described interactive interface is for receiving user instruction; And
Control module, described control module is connected with described interactive interface with described electrical level matching circuit respectively, described control module is used for carrying out work according to described user instruction, and in the course of the work described pulse signal is edited, obtain and recording impulse data, wherein, described pulse data comprises pulse pattern and triggered time.
2. vehicle pulse signal recorder according to claim 1, it is characterized in that, described control module is edited described pulse signal, obtain and recording impulse data, comprise: the rising edge and the negative edge that detect described pulse signal, and when rising edge and the negative edge of described pulse signal being detected, record described pulse pattern and triggered time.
3. vehicle pulse signal recorder according to claim 1, is characterized in that, described control module is also for reappearing described pulse signal according to described pulse pattern and triggered time.
4. vehicle pulse signal recorder according to claim 3, it is characterized in that, described control module comprises: input capture port and I/O port, described control module catches the pulse signal sent from described electrical level matching circuit by described input capture port, described pulse signal is sent to described electrical level matching circuit by described I/O port by described control module, and is exported the described pulse signal reappeared by described electrical level matching circuit.
5. vehicle pulse signal recorder according to claim 1, is characterized in that, also comprise: CAN transceiver, and described CAN transceiver is connected with described control module.
6. vehicle pulse signal recorder according to claim 1, it is characterized in that, also comprise: memory module, described memory module is connected with described control module, for storing described pulse data, described control module is connected with described memory module by described high-capacity memory cards SDHC port.
7. vehicle pulse signal recorder according to claim 6, is characterized in that, described memory module is SD card.
8. vehicle pulse signal recorder according to claim 1, is characterized in that, also comprise: power management module, and described power management module is used for powering for described vehicle pulse signal recorder.
9. the vehicle pulse signal recorder according to any one of claim 1-8, is characterized in that, described control module also comprises: USB port, for realizing the connection with peripherals.
10. a vehicle equipment, is characterized in that, comprising: the vehicle pulse signal recorder as described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410520272.4A CN104240334A (en) | 2014-09-30 | 2014-09-30 | Pulse signal recorder for automobile and automobile detecting equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410520272.4A CN104240334A (en) | 2014-09-30 | 2014-09-30 | Pulse signal recorder for automobile and automobile detecting equipment |
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| CN201410520272.4A Pending CN104240334A (en) | 2014-09-30 | 2014-09-30 | Pulse signal recorder for automobile and automobile detecting equipment |
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Application publication date: 20141224 |