Low-speed pedestrian alarm and electric automobile

Abstract

The utility model discloses a low-speed pedestrian alarm and an electric automobile. The low-speed pedestrian alarm comprises a main control module, a voice module and a power amplifier module which are connected in sequence. Wherein the main control module is used for outputting a corresponding voice calling instruction according to the vehicle speed; the voice module is used for calling corresponding voice information from the interior of the voice module according to the voice calling instruction; and the power amplifier module is used for amplifying the voice information so as to realize voice alarm. The vehicle-mounted voice warning device is low in maintenance and upgrading cost, can realize a voice warning function under different vehicle speeds, and can output continuous warning tones with better voice effects, so that the road safety can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a low-speed pedestrian alarm and an electric vehicle. Background Art

[0002] Traditional vehicles typically use engine vibrations to warn pedestrians and other vehicles when starting or driving at low speeds. However, regulations require electric vehicles to emit a continuous warning tone when the vehicle is starting and its speed falls below a certain threshold.

[0003] Currently, continuous beep warning devices primarily utilize a single-chip microcontroller as their core, with peripheral circuitry designed to output audio signals and amplify them using integrated operational amplifiers. This approach results in high maintenance and upgrade costs, a limited number of audio sampling points, and poor audio quality, preventing the output of continuous beep sounds with good audio quality. Furthermore, related continuous beep warning devices are unable to implement voice warnings at varying vehicle speeds. Therefore, there is a need for a novel continuous beep warning device. Utility Model Content

[0004] The present invention aims to at least partially address one of the technical problems in the related art. To this end, the first object of the present invention is to provide a low-speed pedestrian alarm that has low maintenance and upgrade costs, can provide a voice warning function at different vehicle speeds, and can output a continuous warning tone with good voice quality, thereby improving road safety.

[0005] The second purpose of the present utility model is to provide an electric vehicle.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions:

[0007] A low-speed pedestrian alarm, comprising:

[0008] The main control module is used to output corresponding voice call instructions according to the vehicle speed;

[0009] A voice module, connected to the main control module, for calling corresponding voice information from within the voice module according to the voice calling instruction;

[0010] The power amplifier module is connected to the voice module and is used to amplify the voice information so as to realize voice alarm.

[0011] Preferably, the main control module is a S9KEAZ128AMLH model single chip microcomputer.

[0012] Preferably, the voice module is a WT2003H4-16S model voice chip.

[0013] Preferably, the power amplifier module is a TDA2050A model power amplifier chip.

[0014] Preferably, the low-speed pedestrian alarm further includes a vehicle speed sensor connected to the 51st pin and the 52nd pin of the main control module, and the main control module reads the vehicle speed information through its own 51st pin and the 52nd pin.

[0015] Preferably, the sixth pin of the voice module is connected to the thirty-eighth pin of the main control module to achieve clock synchronization; the sixteenth pin of the voice module is connected to the thirty-ninth pin of the main control module to achieve reception of the voice call instruction.

[0016] Preferably, the ninth pin of the voice module is connected to the first pin of the power amplifier module to realize the sending of the voice information.

[0017] Preferably, the low-speed pedestrian alarm further includes a playing module connected to the power amplifier module for playing the voice information to realize a voice alarm.

[0018] Preferably, the peripheral circuit of the power amplifier module includes first to sixth capacitors and first to sixth resistors;

[0019] The first pin of the power amplifier module is connected to the ninth pin of the voice module through a first capacitor;

[0020] The first resistor and the second resistor of the power amplifier module are connected to form a first node, and the first pin of the power amplifier module is also grounded through the first resistor and the second resistor; one end of the third resistor and the second capacitor of the power amplifier module is connected to the first node, the other end of the second capacitor is grounded, and the other end of the third resistor is connected to the fifth pin of the power amplifier module, and the fifth pin of the power amplifier module is also connected to a 12V power supply and grounded through the third capacitor;

[0021] The fourth pin of the power amplifier module serves as an output terminal and is grounded through a fourth resistor, a fourth capacitor, and a fifth resistor, wherein the fourth resistor and the fourth capacitor are connected to form a second node, the second pin of the power amplifier module is connected to the second node, and the third pin of the power amplifier module is grounded;

[0022] The fourth pin of the power amplifier module is also grounded through a sixth resistor and a fifth capacitor, and is connected to the playback module through a sixth capacitor.

[0023] To achieve the above-mentioned object, a second aspect of the present invention provides an electric vehicle comprising the above-mentioned low-speed pedestrian alarm.

[0024] The utility model has at least the following technical effects:

[0025] 1. The present invention adopts a solution that combines a main control module, a voice module and an amplifier module, and stores the sound source, i.e., voice information, in a voice chip, i.e., the voice module, thereby reducing the storage and call pressure of the main control module. During operation, the sound source is directly called from within the voice module, thereby saving the resources of the main control module and improving the sound source quality. In addition, the present invention directly upgrades the voice module during maintenance and upgrades, thereby reducing maintenance and upgrade costs. In addition, the present invention uses the WT2003H4-16S voice chip to increase the audio sampling point, thereby improving the output of continuous prompt sounds with better voice effects. In addition, the TDA2050A power amplifier chip and its peripheral circuits can output continuous prompt sounds with better voice effects, thereby improving the continuity of the prompt sounds, thereby improving the customer experience, and effectively improving road safety.

[0026] 2. The main control module in the present invention is also connected to the vehicle speed sensor, so that the vehicle speed can be obtained in real time, and the corresponding voice call command can be output according to the vehicle speed, thereby realizing the voice warning function at different vehicle speeds.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural block diagram of a low-speed pedestrian alarm according to an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the peripheral circuit structure of the main control module of an embodiment of the present utility model.

[0030] Figure 3 This is a structural block diagram of a low-speed pedestrian alarm according to another embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the peripheral circuit of the voice module according to an embodiment of the present utility model.

[0032] Figure 5 This is a schematic diagram of the peripheral circuit of the power amplifier module according to an embodiment of the present utility model.

[0033] Figure 6 Schematic diagram of a playback module according to an embodiment of the present invention.

[0034] Figure 7 This is a structural block diagram of an electric vehicle according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0035] The present embodiment is described in detail below. Examples of the embodiment are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] A low-speed pedestrian alarm and an electric vehicle according to the present embodiment will be described below with reference to the accompanying drawings.

[0037] Figure 1 This is a structural block diagram of a low-speed pedestrian alarm according to an embodiment of the present invention. Figure 1 As shown, the low-speed pedestrian alarm 100 includes a main control module 10, a voice module 20, and a power amplifier module 30, which are connected in sequence. The main control module 10 is used to output a corresponding voice call instruction based on the vehicle speed; the voice module 20 is used to call the corresponding voice information from the voice module 20 according to the voice call instruction; and the power amplifier module 30 is used to amplify the voice information to realize the voice alarm.

[0038] In this embodiment, the main control module 10 can obtain the vehicle speed and then output a corresponding voice call instruction according to the vehicle speed.

[0039] As an example, when the main control module 10 determines that the vehicle speed is lower than the preset value based on the obtained vehicle speed, it can output a low-speed voice call instruction. Then, after the voice module 20 receives the low-speed voice call instruction, it calls the internal sound source to obtain a continuous prompt sound at low speed, and after amplification through the power amplifier module 30, it issues a voice alarm to warn pedestrians that there are low-speed vehicles on the road.

[0040] As another example, when the main control module 10 determines that the acquired vehicle speed is higher than another preset value, it can output a high-speed voice call instruction. Then, after receiving the high-speed voice call instruction, the voice module 20 calls the internal sound source to obtain continuous prompt sound at high speed, and after amplification through the power amplifier module 30, a voice alarm is issued to warn pedestrians that there are high-speed vehicles on the road.

[0041] It should be noted that the main control module 10 can also output a vehicle start-up voice call instruction when detecting that the vehicle is started. Then, after the voice module 20 receives the vehicle start-up voice call instruction, it calls the internal sound source to obtain the continuous prompt sound when the vehicle is started, and after amplification by the power amplifier module 30, a voice alarm is issued to emit a continuous prompt sound when the vehicle starts to warn pedestrians.

[0042] It is understandable that the sound source information corresponding to various continuous prompt sounds can be stored in the voice module 20 in advance, so that the main control module 10 can output corresponding voice call instructions according to different vehicle speeds or vehicle states.

[0043] In this embodiment, a solution of combining a main control module 10, a voice module 20 and a power amplifier module 30 is adopted to store the sound source in the voice module 20, thereby reducing the storage and call pressure of the main control module 10. During operation, the sound source is directly called from within the voice module 20, thereby saving resources of the main control module 10 and improving the sound source quality. In addition, upgrading the voice module 20 during maintenance and upgrades can reduce maintenance and upgrade costs.

[0044] In one embodiment of the present invention, the main control module 10 is a S9KEAZ128AMLH single chip microcomputer, the voice module 20 is a WT2003H4-16S voice chip, and the power amplifier module 30 is a TDA2050A power amplifier chip.

[0045] In this embodiment, the S9KEAZ128AMLH single-chip microcomputer is low-cost, has abundant resources, and offers advantages such as low power consumption, high performance, high reliability, and ease of development. In this embodiment, the WT2003H4-16S voice chip is used to increase the audio sampling point, resulting in better voice output, thereby enabling the output of continuous prompt tones with better voice quality and improved tone continuity. Furthermore, the TDA2050A power amplifier chip and its peripheral circuitry further enhance voice quality.

[0046] The peripheral circuits of each module are described in detail below.

[0047] Figure 2 FIG. 1 is a schematic diagram of the peripheral circuit structure of the main control module of the embodiment of the present utility model. Figure 2 As shown, the tenth capacitor C10 to the fourteenth capacitor C14 are connected in parallel between the +5V power supply and GND to stabilize the voltage of the main control module 10, which can improve the system's resistance to external interference. The seventh capacitor C7 and the eighth capacitor C8 are two capacitors of different capacities, which are connected in parallel between the VCAP pin of the main control module 10 and GND, which can effectively stabilize the internal VCAP voltage of the main control module 10 and further improve the stability of the system. The seventh resistor R7 and the crystal oscillator Y1 can provide an external 8M clock source for the main control module 10. The eighth resistor R8 and the ninth capacitor C9 can provide a reset RESET pull-up for the main control module 10 to ensure that the reset function of the main control module 10 can operate normally. PIN46, PIN49, PIN60, and PIN7 of the main control module 10 together constitute the programming port, which can be used for programming the main control module 10.

[0048] Figure 3 This is a structural block diagram of a low-speed pedestrian alarm according to another embodiment of the present invention. Figure 3 As shown, the low-speed pedestrian alarm 100 further includes a vehicle speed sensor 50. Figure 2As shown, it is connected to the fifty-first and fifty-second pins of the main control module 10. The main control module 10 reads the vehicle speed information through its own fifty-first and fifty-second pins, namely the TXCAN and RXCAN terminals, thereby outputting corresponding voice call instructions according to different vehicle speeds.

[0049] Figure 4 Schematic diagram of the peripheral circuit of the voice module of the present utility model embodiment. Figure 2 and 4 As shown, the sixth pin of the voice module 20 is connected to the thirty-eighth pin of the main control module 10 to achieve clock synchronization, and the sixteenth pin of the voice module 20 is connected to the thirty-ninth pin of the main control module 10 to achieve reception of the voice call instruction.

[0050] In this embodiment, the main control module 10 can send a CLK2 clock signal to achieve clock synchronization with the voice module 20, and send a DATA2 signal, i.e., a voice call instruction, so that the voice module 20 calls the corresponding voice information after receiving the DATA2 signal.

[0051] The fifteenth capacitor C15 and the sixteenth capacitor C16 stabilize the internal voltage of the voice module 20. The eleventh resistor R11 is connected in series between the system analog ground and the external ground network to achieve impedance matching between the internal and external ground networks, thereby improving the stability of the entire system.

[0052] Figure 5 FIG. 1 is a schematic diagram of the peripheral circuit of the power amplifier module of the embodiment of the present utility model. Figure 4 and 5 As shown, the ninth pin of the voice module 20 is connected to the first pin of the power amplifier module 30 to implement the transmission of voice information.

[0053] In this embodiment, after retrieving the voice information, the voice module 20 may send the voice information, ie, the DACL signal, to the power amplifier module 30. The peripheral circuit of the power amplifier module 30 includes first to sixth capacitors C1 to C6 and first to sixth resistors R1 to R6.

[0054] Among them, the first pin of the power amplifier module 30 is connected to the ninth pin of the voice module 20 through the first capacitor C1; the first resistor R1 and the second resistor R2 of the power amplifier module 30 are connected to a first node, and the first pin of the power amplifier module 30 is also grounded through the first resistor R1 and the second resistor R2; one end of the third resistor R3 and the second capacitor C2 of the power amplifier module 30 is connected to the first node, the other end of the second capacitor C2 is grounded, and the other end of the third resistor R3 is connected to the fifth pin of the power amplifier module 30, and the fifth pin of the power amplifier module 30 is also connected to the 12V power supply and grounded through the third capacitor C3; the fourth pin of the power amplifier module 30 serves as an output end and is grounded through the fourth resistor R4, the fourth capacitor C4 and the fifth resistor R5, wherein the fourth resistor R4 and the fourth capacitor C4 are connected to a second node, the second pin of the power amplifier module 30 is connected to the second node, and the third pin of the power amplifier module 30 is grounded; the fourth pin of the power amplifier module 30 is also grounded through the sixth resistor R6 and the fifth capacitor C5, and is connected to the playback module 40 through the sixth capacitor C6.

[0055] In this embodiment, the first capacitor C1 processes the signal output by the voice module 20, filtering out the DC component while retaining the AC component. The first through third resistors R1, R3, and second capacitor C2 provide a stable DC bias for the AC component, which is then input to the first pin of the power amplifier module 30. Furthermore, in this embodiment, by adjusting the parameters of the fourth resistor R4, the fifth resistor R5, and the fourth capacitor C4, a desired amplified audio signal is obtained. This signal is then filtered by the sixth resistor R6, the fifth capacitor C5, and the sixth capacitor C6, driving the external speaker, i.e., the playback module 40, to produce the desired continuous prompt tone.

[0056] Figure 6 Schematic diagram of the playback module of the present utility model embodiment. Figure 6 As shown, the playing module 40 can be a speaker, the positive end of which is connected to the output end of the power amplifier module 30, and can be used to play the voice information after power amplification to realize voice alarm.

[0057] Figure 7 This is a structural diagram of an electric vehicle according to an embodiment of the present utility model. Figure 7 As shown, the electric vehicle 1000 includes the low-speed pedestrian alarm 100 described above.

[0058] In summary, the present invention adopts a solution that combines a main control module, a voice module, and an amplifier module. The sound source, i.e., the voice information, is stored in the voice chip, i.e., the voice module. This reduces the storage and call pressure of the main control module. During operation, the sound source is directly called from within the voice module, thereby saving the resources of the main control module and improving the sound source quality. Furthermore, the present invention directly upgrades the voice module during maintenance and upgrades, thereby reducing maintenance and upgrade costs. Furthermore, the present invention uses the WT2003H4-16S voice chip to increase the audio sampling point, thereby improving the output of the continuous prompt tone voice effect. Furthermore, the TDA2050A amplifier chip and its peripheral circuits can output a continuous prompt tone with better voice effect, improving the continuity of the prompt tone, thereby improving the user experience and effectively enhancing road safety. Furthermore, the main control module in the present invention is also connected to the vehicle speed sensor, thereby obtaining the vehicle speed in real time and outputting corresponding voice call instructions based on the vehicle speed. This allows for voice warning functions at different vehicle speeds, thereby improving road safety.

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0060] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A low-speed pedestrian alarm, characterized in that: include: The main control module is used to output corresponding voice call instructions according to the vehicle speed; A voice module, connected to the main control module, for calling corresponding voice information from within the voice module according to the voice calling instruction; The power amplifier module is connected to the voice module and is used to amplify the voice information so as to realize voice alarm.

2. The low-speed pedestrian alarm according to claim 1, characterized in that: The main control module is a S9KEAZ128AMLH model single chip microcomputer.

3. The low-speed pedestrian alarm according to claim 2, characterized in that: The voice module is a WT2003H4-16S voice chip.

4. The low-speed pedestrian alarm according to claim 3, characterized in that: The power amplifier module is a TDA2050A model power amplifier chip.

5. The low-speed pedestrian alarm according to claim 2, characterized in that: It also includes a vehicle speed sensor connected to the fifty-first pin and the fifty-second pin of the main control module. The main control module reads the vehicle speed information through its fifty-first pin and the fifty-second pin.

6. The low-speed pedestrian alarm according to claim 3, characterized in that: The sixth pin of the voice module is connected to the thirty-eighth pin of the main control module to achieve clock synchronization; the sixteenth pin of the voice module is connected to the thirty-ninth pin of the main control module to achieve the reception of the voice call instruction.

7. The low-speed pedestrian alarm according to claim 4, characterized in that: The ninth pin of the voice module is connected to the first pin of the power amplifier module to implement the sending of the voice information.

8. The low-speed pedestrian alarm according to claim 7, characterized in that: It also includes a playing module, which is connected to the power amplifier module and is used to play the voice information to achieve voice alarm.

9. The low-speed pedestrian alarm according to claim 8, characterized in that: The peripheral circuit of the power amplifier module includes first to sixth capacitors and first to sixth resistors; The first pin of the power amplifier module is connected to the ninth pin of the voice module through a first capacitor; The first resistor and the second resistor of the power amplifier module are connected to form a first node, and the first pin of the power amplifier module is also grounded through the first resistor and the second resistor; one end of the third resistor and the second capacitor of the power amplifier module is connected to the first node, the other end of the second capacitor is grounded, and the other end of the third resistor is connected to the fifth pin of the power amplifier module, and the fifth pin of the power amplifier module is also connected to a 12V power supply and grounded through the third capacitor; The fourth pin of the power amplifier module serves as an output terminal and is grounded through a fourth resistor, a fourth capacitor, and a fifth resistor, wherein the fourth resistor and the fourth capacitor are connected to form a second node, the second pin of the power amplifier module is connected to the second node, and the third pin of the power amplifier module is grounded; The fourth pin of the power amplifier module is also grounded through a sixth resistor and a fifth capacitor, and is connected to the playback module through a sixth capacitor.

10. An electric vehicle, characterized in that: It comprises the low-speed pedestrian alarm as described in any one of claims 1-9.

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