Vehicle alarm system

Abstract

The utility model provides a vehicle alarm system. The vehicle alarm system at least comprises a communication unit, a control unit and an alarm display lamp unit. The communication unit is connected with a vehicle ECU and used for receiving real-time operation data and sending the real-time operation data to the control unit. The control unit is used for analyzing the real-time operation data so as to send an abnormal signal to the alarm display lamp unit according to an analysis result; and the alarm display lamp unit is used for displaying a corresponding optical signal based on the abnormal signal. By reading the real-time operation data of the ECU of the vehicle, comprehensive and real-time monitoring of key parts and systems of the vehicle is realized, and the data of the sensor is analyzed and processed, so that the fault type and severity are accurately judged. According to different fault conditions, a personalized optical signal alarm display mode is formulated, so that the intuition and effectiveness of alarm are improved.

Description

TECHNICAL FIELD

[0001] The application relates to an alarm system, in particular to a vehicle alarm system, and belongs to the technical field of driving assistance. BACKGROUND

[0002] Automobiles play an important role in people's lives as modern means of transportation. However, various problems may occur during the use of automobiles, affecting driving safety. In order to ensure that the driver can timely understand the running status of the vehicle, various alarm devices are equipped on the automobile. The traditional alarm mode mainly includes the indicator lights on the instrument panel and the sound alarm. For example, when the engine fails, the engine failure light on the instrument panel will light up; when the seat belt is not fastened, a sound prompt will be given.

[0003] With the continuous development of automobile technology, the degree of electronicization and intelligentization of automobiles is getting higher and higher. Modern automobiles are equipped with numerous electronic systems and sensors, which can monitor various running parameters of the vehicle in real time. However, the traditional alarm mode has some limitations. On the one hand, there are many indicator lights on the instrument panel, and the driver may have difficulty in quickly and accurately identifying the meaning of each indicator light during driving, especially in emergency situations. On the other hand, some minor faults or abnormalities may not be clearly displayed on the instrument panel, and may be easily ignored by the driver.

[0004] In addition, the settings and meanings of the alarm indicator lights of different brands and models of automobiles may be different, which brings certain difficulties to the understanding and memory of the driver. CONTENT OF THE INVENTION

[0005] Therefore, the application provides a vehicle alarm system to solve or alleviate the technical problems in the prior art, at least to provide a beneficial choice.

[0006] The technical scheme of the embodiment of the application is as follows:

[0007] The application provides a vehicle alarm system, which at least comprises a communication unit, a control unit and an alarm display light unit.

[0008] The communication unit is connected with the vehicle ECU, and is used for receiving real-time running data and sending the real-time running data to the control unit.

[0009] The control unit is used for analyzing the real-time running data, and sending an abnormal signal to the alarm display light unit according to the analysis result.

[0010] The alarm display light unit is used for displaying a corresponding light signal based on the abnormal signal.

[0011] Further preferably, the communication unit comprises at least a CAN_TX pin, a CAN_RX pin, a CAN_SB pin, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C19, a capacitor C20, a CAN chip, a resistor R13, a resistor R14, a resistor R22, a resistor R24, a resistor R94, a resistor R95, a filter L1, a diode D1, a diode D2, a SMD diode H5, an H / A / TA port and an L / B / RX port.

[0012] Further preferably, the control unit comprises at least an MCU chip, and the MCU chip is provided with at least 48 ports.

[0013] The control unit further comprises a capacitor C6, a capacitor C7, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C18, a capacitor C26, a thermistor X1, a resistor R1, a resistor R4, a resistor R5, a resistor R10, a resistor R12, a resistor R19 and a diode D9.

[0014] Further preferably, the alarm display lamp unit comprises a plurality of parallel shift register chips, and each shift register chip is connected with an LED lamp, and the LED lamps are arranged in a matrix form.

[0015] The shift register chip is further provided with at least a port SER_I, a port RCK and a port SRCK.

[0016] Further preferably, the H / A / TA port and the L / B / RX port are connected with the vehicle ECU.

[0017] One end of the CAN_TX pin, the CAN_RX pin and the CAN_SB pin is respectively connected to a port PA4, a port PA5 and a port PA6 of the MCU chip, and the other end is respectively connected to a port TXD, a port RXD and a port STB of the CAN chip.

[0018] Further preferably, the capacitor C15 and the capacitor C16 are connected in parallel, one end of which is respectively connected to an external power supply and a port VCC of the CAN chip, and the other end is respectively grounded and connected to a port GND of the CAN chip.

[0019] The filter L1 is connected in parallel with the resistor R13 and the resistor R24, and an end point 1 and an end point 4 of the filter L1 are respectively connected to a port CANH and a port CANL of the CAN chip, and an end point 2 and an end point 3 of the filter L1 are respectively connected to the capacitor C17 and the capacitor C20 after being connected with the resistor R14 and the resistor R22.

[0020] The capacitor C19 is connected to any point between the resistor R14 and the resistor R22 at one end, and connected to any point between the capacitor C17 and the capacitor C20 and grounded at the other end.

[0021] The capacitor C17 and the capacitor C20 are also connected to the resistor R94 and the resistor R95 respectively, the resistor R94 is connected to the H / A / TA port, and the resistor R95 is connected to the L / B / RX port.

[0022] The negative electrode of the diode D1 is connected to any point between the capacitor C20 and the resistor R95, and finally connected to the first port of the patch diode H5, and the positive electrode of the diode D1 is connected to the positive electrode of the diode D2 and grounded.

[0023] The negative electrode of the diode D2 is connected to any point between the capacitor C17 and the resistor R94, and the second port of the patch diode H5 is connected between the capacitor C17 and the connection point of the negative electrode of the diode D2.

[0024] Further preferably, the port PA10, the port PA9 and the port PA8 of the MCU chip are connected to the port SER_I, the port RCK and the port SRCK respectively.

[0025] Further preferably, one end of the capacitor C18 is connected to the port VSS of the MCU chip and the resistor R19 and then grounded, and the other end is connected to the port VDD of the MCU chip through the external power supply, and the other end of the resistor R19 is also connected to the port PB2 of the MCU chip.

[0026] One end of the resistor R12, the resistor R4 and the resistor R5 is connected to the port PB12, the port PF7 and the port PF6 of the MCU chip respectively, and the other end is connected to the positive electrode of the diode D9, the external power supply and the ground respectively; the negative electrode of the diode D9 is grounded.

[0027] Further preferably, one end of the resistor R10 is connected to the external power supply, and the other end is connected to the capacitor C12 and the port NRST of the MCU chip respectively.

[0028] The capacitor C13 and the capacitor C14 are connected in parallel, one end of which is connected to the capacitor C12 and then grounded, and the other end is connected to the external power supply and the port VDDA of the MCU chip in turn.

[0029] The end point 1 of the thermistor is connected to the capacitor C10 and the port PF1 of the MCU chip, the end point 2 of the thermistor is connected to the capacitor C11 and then grounded, the end point 3 of the thermistor is connected to the capacitor C11 and then connected to the port PF0 of the MCU chip, and the end point 4 of the thermistor is connected to the capacitor C10 and then grounded.

[0030] The capacitor C6 and the capacitor C7 are connected in parallel, one end of which is grounded, and the other end of which is connected to the port VDD of the MCU chip and the external power supply respectively.

[0031] One end of the resistor R1 is connected to the port BOOT0 of the MCU chip, the other end of the resistor R1 is connected to the capacitor C26 and then grounded, and the junction point is connected to the port VSS of the MCU chip, and the capacitor C26 is also connected to the external power supply.

[0032] Further preferably, the port VSSA of the MCU chip is grounded.

[0033] The embodiment of the present application has the following advantages due to the above technical solutions:

[0034] The present application realizes comprehensive and real-time monitoring of key components and systems of a vehicle by reading real-time running data of an ECU of the vehicle, and analyzes and processes sensor data to accurately determine fault types and severity. According to different fault conditions, individualized light signal alarm display modes are formulated to improve the intuitiveness and effectiveness of the alarm.

[0035] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be apparent from the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0037] Figure 1 The vehicle alarm system framework of the present application.

[0038] Figure 2 The Figure 1 The communication unit schematic diagram.

[0039] Figure 3 The Figure 1The control unit schematic diagram.

[0040] Figure 4 For Figure 1 The alarm display lamp unit schematic diagram. DETAILED DESCRIPTION

[0041] Hereinafter, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0042] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0043] As Figure 1 The present application provides a vehicle alarm system, comprising at least a communication unit, a control unit and an alarm display lamp unit.

[0044] The communication unit is connected with the vehicle ECU, for receiving real-time running data and sending to the control unit.

[0045] The control unit is used for analyzing the real-time running data, and sending an abnormal signal to the alarm display lamp unit according to the analysis result.

[0046] The alarm display lamp unit is used for displaying a corresponding light signal based on the abnormal signal.

[0047] In the embodiment, specifically: as Figure 2 The communication unit comprises at least a CAN_TX pin, a CAN_RX pin, a CAN_SB pin, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C19, a capacitor C20, a CAN chip, a resistor R13, a resistor R14, a resistor R22, a resistor R24, a resistor R94, a resistor R95, a filter L1, a diode D1, a diode D2, a patch diode H5, an H / A / TA port and an L / B / RX port.

[0048] In the embodiment, specifically: as Figure 3 The control unit comprises at least an MCU chip, and the MCU chip is provided with at least 48 ports.

[0049] The control unit further comprises a capacitor C6, a capacitor C7, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C18, a capacitor C26, a thermistor X1, a resistor R1, a resistor R4, a resistor R5, a resistor R10, a resistor R12, a resistor R19 and a diode D9.

[0050] In this embodiment, specifically: as follows: Figure 4 As shown, the alarm indicator unit includes multiple shift register chips connected in parallel, and each shift register chip is connected to an LED, which are arranged in a matrix.

[0051] The shift register chip is also equipped with at least ports SER_I, RCK, and SRCK.

[0052] In this embodiment, specifically: the H / A / TA port and the L / B / RX port are connected to the vehicle ECU.

[0053] One end of the CAN_TX pin, CAN_RX pin, and CAN_SB pin is connected to port PA4, port PA5, and port PA6 of the MCU chip, respectively, and the other end is connected to port TXD, port RXD, and port STB of the CAN chip.

[0054] In this embodiment, specifically: after capacitors C15 and C16 are connected in parallel, one end is connected to the external power supply and the VCC port of the CAN chip, respectively, and the other end is connected to the ground and the GND port of the CAN chip, respectively.

[0055] The filter L1 is connected in parallel with the resistors R13 and R24. Terminals 1 and 4 of the filter L1 are connected to the CANH and CANL ports of the CAN chip, respectively. Terminals 2 and 3 of the filter L1 are connected to the capacitors C17 and C20 after being combined with the resistors R14 and R22, respectively.

[0056] One end of capacitor C19 is connected to any point between resistors R14 and R22, and the other end is connected to any point between capacitors C17 and C20 and grounded.

[0057] The capacitors C17 and C20 are also connected to the resistors R94 and R95 respectively. The resistor R94 is connected to the H / A / TA port, and the resistor R95 is connected to the L / B / RX port.

[0058] The negative terminal of diode D1 is connected to any point between capacitor C20 and resistor R95, and is ultimately connected to the first port of surface mount diode H5. The positive terminal of diode D1 is connected to ground with the positive terminal of diode D2.

[0059] The negative terminal of the diode D2 is connected to any point between the capacitor C17 and the resistor R94, and the second port of the surface mount diode H5 is connected between the capacitor C17 and the negative terminal of the diode D2.

[0060] In this embodiment, specifically, the port PA10, the port PA9 and the port PA8 of the MCU chip are connected with the port SER_I, the port RCK and the port SRCK respectively.

[0061] In this embodiment, specifically, one end of the capacitor C18 is connected with the port VSS of the MCU chip and the resistor R19 and grounded, and the other end is connected with an external power supply and accessed to the port VDD of the MCU chip, and the other end of the resistor R19 is also accessed to the port PB2 of the MCU chip.

[0062] One end of the resistor R12, the resistor R4 and the resistor R5 is accessed to the port PB12, the port PF7 and the port PF6 of the MCU chip respectively, and the other end is accessed to the anode of the diode D9, an external power supply and ground respectively; the cathode of the diode D9 is grounded.

[0063] In this embodiment, specifically, one end of the resistor R10 is accessed to an external power supply, and the other end is connected with the capacitor C12 and the port NRST of the MCU chip respectively.

[0064] The capacitor C13 and the capacitor C14 are connected in parallel, one end of which is connected with the capacitor C12 and grounded, and the other end of which is connected with an external power supply and the port VDDA of the MCU chip in sequence after being connected.

[0065] One end of the thermistor is connected to the capacitor C10 and the port PF1 of the MCU chip, and the other end is connected to the capacitor C11 and grounded; the third end of the thermistor is connected to the capacitor C11 and accessed to the port PF0 of the MCU chip; the fourth end of the thermistor is connected to the capacitor C10 and grounded.

[0066] The capacitor C6 and the capacitor C7 are connected in parallel, one end of which is grounded, and the other end of which is accessed to the port VDD of the MCU chip and an external power supply respectively.

[0067] One end of the resistor R1 is accessed to the port BOOT0 of the MCU chip, and the other end is connected with the capacitor C26 and grounded, and the connection point is accessed to the port VSS of the MCU chip; the capacitor C26 is also accessed to an external power supply.

[0068] In this embodiment, specifically, the port VSSA of the MCU chip is grounded.

[0069] When the application works:

[0070] The H / A / TA port and L / B / RX port in the communication unit are internally connected to the differential signal pins of the CAN bus. When the signal voltage of the H / A / TA port is higher than that of the L / B / RX port, it indicates that the logic "1" is transmitted; otherwise, when the signal voltage of the H / A / TA port is lower than that of the L / B / RX port, it indicates that the logic "0" is transmitted. The communication unit is externally connected to the vehicle ECU through a twisted pair.

[0071] The CAN_TX pin in the communication unit is a transmitting data pin. The control unit transmits the CAN data (i.e., the real-time running data) to be read to the CAN_TX pin, and the signal is converted into a differential signal with stronger anti-interference capability by the SIT1042T chip (i.e., the CAN chip), and then transmitted to the vehicle ECU through the H / A / TA port and the L / B / RX port.

[0072] Further, the CAN_RX pin in the communication unit is a receiving data pin. When the vehicle ECU transmits data through the H / A / TA port and the L / B / RX port, the differential signal is converted into a digital signal by the SIT1042T chip and output to the control unit through the CAN_RX pin for processing.

[0073] Further, the control unit adopts a high-performance microprocessor with strong data processing capability and storage function. The control unit internally stores various fault judgment algorithms and standard parameters, as well as the communication protocol with the alarm lamp display module.

[0074] When the control unit receives the signal from the CAN_RX pin, the software algorithm first filters the signal to remove noise interference, and then compares and analyzes the processed signal with the preset standard parameters. If the signal is out of the normal range, the control unit will generate corresponding control instructions according to the fault type and severity, and send the abnormal signal to the alarm display lamp unit through the port SER_I, the port RCK and the port SRCK.

[0075] In addition, the control unit also has a self-diagnosis function, which can periodically detect the working state of the communication unit and itself. If a fault of the communication unit or an abnormality of the control unit itself is found, the corresponding alarm signal will be sent in time, and the fault information will be displayed on the alarm display lamp unit.

[0076] Further, the signals "SER_I", "RCK" and "SRCK" of the control unit are connected to the SN74HC595. The SN74HC595 is an 8-bit serial input and parallel output shift register chip.

[0077] Port SER_I is the entrance of data into the chip. The external controller inputs serial data into the chip from this pin one bit at a time. The data enters the chip sequentially under the control of the "RCK" clock signal.

[0078] Port RCK is the clock signal input pin of the storage register. At the rising edge of "RCK", the data in the shift register is latched into the storage register. After a period of data shift operation, when it is necessary to stably output the data in the shift register, the data in the shift register is transmitted to the storage register through the generation of a rising edge signal on the "RCK" pin, so as to be output from the parallel output pin.

[0079] Port SRCK is the clock signal input pin of the shift register. At the rising edge of "SRCK", the data on the DS pin is shifted into the shift register. With the arrival of each rising edge, the data is shifted one bit to the left (i.e. from the low bit to the high bit), and the data that has been previously shifted into the register is sequentially shifted to a higher bit, while the new data enters the lowest bit. For example, at the first clock rising edge, the first bit of data enters the lowest bit of the shift register; at the second rising edge, the second bit of data enters the lowest bit, while the first bit of data moves to the next lowest bit, and so on.

[0080] The C1-C32 ports of the SN74HC595 are connected to the row lines of the matrix LED lamp, and the row to be lit is selected by sequentially outputting high level to each row line. Quickly switch to the next row, repeat the above operation, and light up the LEDs of each row in turn. Due to the visual persistence effect of the human eye, the entire matrix LED lamp appears to be lit at the same time.

[0081] It should be noted that according to different fault conditions, the application can develop personalized alarm modes, including alarm lights of different colors, flashing frequencies, and detailed text and graphic displays, to improve the intuitiveness and effectiveness of the alarm.

[0082] Further, in addition to the LED matrix display lamp, those skilled in the art can also consider using liquid crystal display screens, OLED display screens, or projection display technology. OLED display screens have higher contrast and faster response speed, and can provide clearer and brighter image display effects. Projection display technology can project fault information onto the windshield, allowing the driver to obtain information without looking down at the instrument panel, improving driving safety.

[0083] Further, in terms of display content and mode, a voice prompt function can be added. When a fault occurs, in addition to displaying text and graphic information on the alarm display unit, the system can also convey the fault content to the driver through voice broadcast, further improving the effectiveness of information transmission.

[0084] Further, in terms of fault judgment algorithms, those skilled in the art can also use different data analysis methods and models. For example, in addition to threshold-based judgment methods, machine learning algorithms can also be introduced to enable the system to more accurately identify and predict faults through learning and training on a large amount of historical fault data.

[0085] Further, for the communication protocol and data transmission method between the control unit and other units, those skilled in the art can also select and optimize according to the specific architecture and needs of the vehicle. For example, faster and more stable wireless communication technologies such as 5G or Bluetooth 5.0 can be used to improve the efficiency and reliability of data transmission.

[0086] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A vehicle alarm system, characterized by At least comprising a communication unit, a control unit and an alarm display lamp unit; The communication unit is connected with the vehicle ECU, used for receiving real-time operation data and sending to the control unit; wherein the communication unit at least comprises a CAN_TX pin, a CAN_RX pin, a CAN_SB pin, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C19, a capacitor C20, a CAN chip, a resistor R13, a resistor R14, a resistor R22, a resistor R24, a resistor R94, a resistor R95, a filter L1, a diode D1, a diode D2, a chip diode H5, an H / A / TA port and an L / B / RX port; The control unit is used for analyzing the real-time operation data, and sending an abnormal signal to the alarm display lamp unit according to the analysis result; wherein the control unit at least comprises an MCU chip, and the MCU chip is provided with at least 48 ports; the control unit further comprises a capacitor C6, a capacitor C7, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C18, a capacitor C26, a thermistor X1, a resistor R1, a resistor R4, a resistor R5, a resistor R10, a resistor R12, a resistor R19 and a diode D9; The alarm display lamp unit is used for displaying a corresponding light signal based on the abnormal signal; wherein the alarm display lamp unit comprises a plurality of parallel shift register chips, and each shift register chip is connected with an LED lamp, and the LED lamps are arranged in a matrix form; the shift register chip is further provided with at least a port SER_I, a port RCK and a port SRCK.

2. The vehicle alarm system of claim 1, wherein The H / A / TA port and the L / B / RX port are connected with the vehicle ECU; One end of the CAN_TX pin, the CAN_RX pin and the CAN_SB pin is respectively connected to a port PA4, a port PA5 and a port PA6 of the MCU chip, and the other end is respectively connected to a port TXD, a port RXD and a port STB of the CAN chip.

3. The vehicle alarm system of claim 1, wherein One end of the capacitor C15 and the capacitor C16 connected in parallel is respectively connected to an external power supply and a port VCC of the CAN chip, and the other end is respectively grounded and connected to a port GND of the CAN chip; The filter L1 is connected in parallel with the resistor R13 and the resistor R24, an endpoint 1 and an endpoint 4 of the filter L1 are respectively connected to a port CANH and a port CANL of the CAN chip, an endpoint 2 and an endpoint 3 of the filter L1 are respectively connected to the resistor R14 and the resistor R22, and then connected to the capacitor C17 and the capacitor C20; One end of the capacitor C19 is connected to any position between the resistor R14 and the resistor R22, and the other end is connected to any position between the capacitor C17 and the capacitor C20 and grounded; The capacitor C17 and the capacitor C20 are further respectively connected with the resistor R94 and the resistor R95, the resistor R94 is connected to the H / A / TA port, and the resistor R95 is connected to the L / B / RX port; The negative electrode of the diode D1 is connected to any position between the capacitor C20 and the resistor R95, and finally connected to the first port of the patch diode H5, and the positive electrode of the diode D1 is connected to the positive electrode of the diode D2 and grounded; The negative electrode of the diode D2 is connected to any position between the capacitor C17 and the resistor R94, and the second port of the patch diode H5 is connected between the capacitor C17 and the connection position of the negative electrode of the diode D2.

4. The vehicle alarm system of claim 1, wherein The ports PA10, PA9 and PA8 of the MCU chip are connected to the ports SER_I, RCK and SRCK respectively.

5. The vehicle alarm system of claim 1, wherein One end of the capacitor C18 is connected to the port VSS of the MCU chip and the resistor R19, and the other end is connected to the port VDD of the MCU chip through the external power supply, and the other end of the resistor R19 is also connected to the port PB2 of the MCU chip. One end of the resistor R12, the resistor R4 and the resistor R5 is connected to the port PB12, the port PF7 and the port PF6 of the MCU chip respectively, and the other end is connected to the positive electrode of the diode D9, the external power supply and the ground respectively; the negative electrode of the diode D9 is grounded.

6. The vehicle alarm system of claim 1, wherein One end of the resistor R10 is connected to the external power supply, and the other end is connected to the capacitor C12 and the port NRST of the MCU chip respectively. The capacitor C13 and the capacitor C14 are connected in parallel, one end of which is connected to the ground through the capacitor C12, and the other end is connected to the external power supply and the port VDDA of the MCU chip in turn after being connected; The endpoint 1 of the thermistor is connected to the capacitor C10 and the port PF1 of the MCU chip, the endpoint 2 of the thermistor is connected to the ground after being connected to the capacitor C11, the endpoint 3 of the thermistor is connected to the port PF0 of the MCU chip after being connected to the capacitor C11, and the endpoint 4 of the thermistor is connected to the ground after being connected to the capacitor C10; The capacitor C6 and the capacitor C7 are connected in parallel, one end of which is grounded, and the other end is connected to the port VDD of the MCU chip and the external power supply respectively. One end of the resistor R1 is connected to the port BOOT0 of the MCU chip, the other end is connected to the ground through the capacitor C26, and the connection point is connected to the port VSS of the MCU chip; the capacitor C26 is also connected to the external power supply.

7. The vehicle alarm system of claim 1, wherein The port VSSA of the MCU chip is grounded.

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