An electric vehicle alarm method, device and storage medium

Abstract

The application discloses an electric vehicle alarm method and device and a storage medium, wherein the method comprises the following steps: when the instrument of the electric vehicle shakes, detecting a continuous voltage waveform signal generated by the vibration switch inside the electric vehicle; determining waveform data in each period according to the continuous voltage waveform signal; calculating all the duration of the low level in several periods according to the waveform data; calculating the total cycle time, and calculating the low level time proportion in the total cycle time according to all the duration of the low level and the total cycle time; comparing the low level time proportion with a preset threshold value, and when the low level time proportion is higher than the preset threshold value, judging that the current shaking meets the alarm condition and generating an alarm information. The application calculates the low level time proportion in the preset period based on the continuous voltage waveform signal, compares the low level time proportion with the preset threshold value to judge whether to initiate the alarm, and can effectively improve the accuracy of the electric vehicle alarm.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicles, in particular to an electric vehicle alarm method, device and storage medium. BACKGROUND

[0002] As one of the main means of transportation in China, two-wheeled electric vehicles have a very high market share. With the increasing importance of two-wheeled electric vehicles in people's lives, the safety and anti-theft function of electric vehicles is particularly important.

[0003] The existing electric vehicle alarm method usually uses a high-end vibration switch to detect the vibration amplitude of the vehicle, and determines whether to initiate an alarm according to the vibration amplitude. However, the high-end vibration switch is expensive, resulting in high equipment costs of the existing electric vehicle alarm method. SUMMARY

[0004] The present application provides an electric vehicle alarm method, device and storage medium to solve the technical problem of high equipment costs of the existing electric vehicle alarm method.

[0005] One embodiment of the present application provides an electric vehicle alarm method, comprising:

[0006] When the electric vehicle instrument shakes, a continuous voltage waveform signal generated by an internal vibration switch of the electric vehicle is detected;

[0007] According to the continuous voltage waveform signal, waveform data in each cycle is determined, the waveform data including high level, low level, rising edge and falling edge;

[0008] According to the waveform data, the total cycle time of several cycles is calculated, and according to the total cycle time and the total cycle time, the low level time ratio in the total cycle time is calculated.

[0009] According to the total cycle time, the total cycle time of several cycles is calculated, and according to the total cycle time and the total cycle time, the low level time ratio in the total cycle time is calculated.

[0010] The low level time ratio is compared with a preset threshold, and when the low level time ratio is higher than the preset threshold, it is determined that the current shaking meets the alarm condition, and an alarm information is generated.

[0011] Further, the detection of the continuous voltage waveform signal generated by the internal vibration switch of the electric vehicle comprises:

[0012] The opening state and the closing state of the vibration switch according to the shaking are detected, and the corresponding continuous voltage waveform signal is generated according to the opening state and the closing state.

[0013] Further, the generation of the corresponding continuous voltage waveform signal according to the opening state and the closing state comprises:

[0014] The pin of the chip is set as an up pull input mode, the pin of the chip is pulled low to a low level when the vibration switch is in a closed state, and the pin of the chip is kept outputting a high level when the vibration switch is in an open state.

[0015] Further, the waveform data in each period is determined according to the continuous voltage waveform signal, and the waveform data includes:

[0016] The change from a high level to a low level in each period is regarded as a falling edge, and the change from a low level to a high level in each period is regarded as a rising edge.

[0017] Further, all durations of the low level in a plurality of periods are calculated according to the waveform data.

[0018] The duration of the low level in each period is calculated according to the rising edge and the falling edge in each period.

[0019] All durations of the low level in all periods are accumulated to obtain all durations of the low level.

[0020] Further, the total period time of the plurality of periods is calculated.

[0021] The current period time is calculated according to the time at which the falling edge of the previous period is located and the time at which the falling edge of the current period is located.

[0022] The total period time is obtained by accumulating the falling edge times of all periods.

[0023] One embodiment of the present application provides an electric vehicle alarm device, comprising:

[0024] A waveform signal detection module is configured to detect a continuous voltage waveform signal generated by a vibration switch in the electric vehicle when the electric vehicle instrument shakes.

[0025] A waveform data determination module is configured to determine waveform data in each period according to the continuous voltage waveform signal, and the waveform data includes a high level, a low level, a rising edge and a falling edge.

[0026] A duration calculation module is configured to calculate all durations of the low level in a plurality of periods according to the waveform data.

[0027] A low level time proportion calculation module is configured to calculate a total period time of the plurality of periods, and calculate a low level time proportion in the total period time according to all durations of the low level and the total period time.

[0028] An alarm module is configured to compare the low-level time proportion with a preset threshold, and when the low-level time proportion is higher than the preset threshold, it is determined that the current shaking meets the alarm condition, and alarm information is generated.

[0029] Further, the duration calculation module is further configured to:

[0030] According to the rising edge and the falling edge in each period, the low-level duration in each period is calculated;

[0031] The low-level durations of all periods are accumulated to obtain all low-level durations.

[0032] Further, the low-level time proportion calculation module is further configured to:

[0033] According to the time at which the falling edge of the previous period is located and the time at which the falling edge of the current period is located, the current period time is calculated;

[0034] The falling edge times of all periods are accumulated to obtain the total period time.

[0035] An embodiment of the present application provides a computer readable storage medium, which comprises a stored computer program, wherein when the computer program runs, the computer readable storage medium controls a device where the computer readable storage medium is located to execute the electric vehicle alarm method as described above.

[0036] The embodiment of the present application can accurately determine whether the current shaking of the electric vehicle meets the alarm condition by detecting the continuous voltage waveform signal generated by the internal vibration switch of the electric vehicle and calculating the low-level time proportion in the preset period based on the continuous voltage waveform signal, and by comparing the low-level time proportion with the preset threshold, without deploying high-end vibration switches to detect the shaking amplitude, so that the device deployment cost of the electric vehicle alarm can be effectively reduced, and the accuracy of the electric vehicle alarm can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a flowchart of the electric vehicle alarm method provided by the embodiment of the present application;

[0038] Figure 2 is a schematic diagram of the internal structure of the electric vehicle instrument provided by the embodiment of the present application;

[0039] Figure 3 is a schematic diagram of a continuous voltage waveform signal provided by the embodiment of the present application;

[0040] Figure 4 is a schematic diagram of the calculation flow of the low-level time proportion provided by the embodiment of the present application;

[0041] Figure 5is another flow diagram of the electric vehicle alarm method provided by the embodiment of the present application;

[0042] Figure 6 is a structural diagram of the electric vehicle alarm device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0045] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Please refer to Figure 1 An embodiment of the present application provides an electric vehicle alarm method, comprising:

[0047] S1, when the electric vehicle instrument shakes, detecting the continuous voltage waveform signal generated by the vibration switch inside the electric vehicle;

[0048] The electric vehicle alarm method of the embodiment of the present application is applicable to two-wheeled electric vehicles. In the embodiment of the present application, a vibration switch circuit can be arranged to sense the shaking of the electric vehicle body or the electric vehicle instrument, and generate a voltage waveform signal according to the shaking. The continuous voltage waveform signal of the vibration switch can be detected by a chip. The continuous single voltage waveform signal generated by the vibration switch inside the electric vehicle is continuously detected.

[0049] In the embodiment of the present application, the pin of the chip is set to an up pull input mode, that is, in a normal case, it is high, when the vibration circuit is turned on, that is, the vibration switch is opened, the pin of the chip is pulled low to low, so that the low voltage waveform signal can be detected.

[0050] In the embodiment of the present application, the electric vehicle instrument with the vibration switch is connected with the pin of the chip, the pin of the chip is connected with the alarm device and the vibration switch circuit respectively, the electric vehicle instrument is powered by the battery of the electric vehicle, the vibration switch circuit and the alarm circuit are integrated in the two-wheeled electric vehicle instrument, so as to continuously detect the voltage waveform signal of the vehicle instrument for 24 hours without interruption, and alarm in time.

[0051] Please refer to Figure 2 , Figure 2 R105 in the formula is a vibration switch, R79 is a patch resistor with a resistance of 1000 ohms, which plays a role of voltage division in the circuit, one end of the resistor is connected with the pin of the chip, and the other end is grounded.

[0052] S2, according to the continuous voltage waveform signal, the waveform data in each period is determined, the waveform data includes high level, low level, rising edge and falling edge;

[0053] In the embodiment of the present application, when the electric vehicle instrument shakes, the vibration switch generates corresponding continuous voltage waveform signal, and in a certain period of time, there may be multiple periods of continuous voltage waveform signal. The embodiment of the present application can analyze the shaking of the electric vehicle instrument according to the waveform data of each period, so as to effectively improve the accuracy of the electric vehicle alarm.

[0054] S3, according to the waveform data, the total duration of low level in a plurality of periods is calculated;

[0055] In the embodiment of the present application, a certain number of periods can be set to determine whether the electric vehicle reaches the alarm condition, for example, the total duration of low level in 100 periods can be set.

[0056] S4, the total period time of a plurality of periods is calculated, according to the total duration of low level and the total period time, the low level time ratio in the total period time is calculated;

[0057] In the embodiment of the present application,

[0058] S5, the low level time ratio is compared with the preset threshold value, when the low level time ratio is higher than the preset threshold value, it is judged that the current shaking meets the alarm condition, and the alarm information is generated.

[0059] In the embodiments of the present application, the specific value of the preset threshold can be set according to actual needs, for example, it can be set to 0.4, 0.5 or 0.6, etc.

[0060] In the embodiments of the present application, by detecting the continuous voltage waveform signal generated by the internal vibration switch of the electric vehicle, and calculating the low-level time ratio in the preset period based on the continuous voltage waveform signal, by comparing the low-level time ratio with the preset threshold, whether the current shaking of the electric vehicle meets the alarm condition can be accurately judged, without deploying high-end vibration switch to detect the shaking amplitude, not only the equipment deployment cost of the electric vehicle alarm can be effectively reduced, but also the accuracy of the electric vehicle alarm can be effectively improved.

[0061] In one embodiment, step S1, detecting the continuous voltage waveform signal generated by the internal vibration switch of the electric vehicle, comprises:

[0062] S11, detecting the opening state and the closing state of the vibration switch according to the shaking, and generating the corresponding continuous voltage waveform signal according to the opening state and the closing state.

[0063] In the embodiments of the present application, when the electric vehicle instrument shakes, the vibration switch in the electric vehicle will make the electrode close or open for a corresponding time according to the strength of the shaking of the electric vehicle instrument, at the same time, the circuit where the vibration switch is located will also have the two states of circuit conduction and circuit disconnection.

[0064] In the embodiments of the present application, when the shaking of the electric vehicle instrument is relatively strong, the vibration switch will make the electrode close for a relatively long time, when the shaking is relatively weak, the vibration switch will make the electrode close for a relatively short time, and when the electrode of the vibration switch is closed or opened, the corresponding continuous voltage waveform signal will be generated.

[0065] In one embodiment, S11, generating the corresponding continuous voltage waveform signal according to the opening state and the closing state, comprises:

[0066] S111, setting the pin of the chip to an up pull input mode, when the vibration switch is in the closed state, pulling the pin of the chip to low level; when the vibration switch is in the open state, keeping the pin of the chip outputting high level.

[0067] In the embodiments of the present application, the terminal related to the pin is set to a double-edge trigger model, after the electric vehicle instrument with the vibration switch shakes, the metal ball or metal conductor inside the vibration switch will collide with each other, so that the external electrode will have the state change of closing or opening. When the electrode is closed, the vibration switch circuit is conductive, at this time the pin of the chip will be pulled to low level by the whole circuit, after the electrode is opened, the pin of the chip keeps high level.

[0068] In the embodiment of the present application, the opening and closing of the vibration switch usually occurs in several microseconds to tens of microseconds, and the vibration time is short, i.e. when the electric vehicle instrument shakes once, the vibration switch can change its state several times, and a continuous voltage waveform signal can be obtained.

[0069] In one embodiment, step S2, the waveform data in each period is determined according to the continuous voltage waveform signal, including:

[0070] S21, the change from high level to low level in each period is regarded as a falling edge, and the change from low level to high level in each period is regarded as a rising edge.

[0071] In the embodiment of the present application, the waveform data in one period includes high level, low level, rising edge and falling edge. Please refer to Figure 3 , the vertical coordinate axis V represents the voltage value of the 3-chip (MCU) pin, and the horizontal coordinate axis T represents time, which is generally in microseconds. 0V on the vertical coordinate represents that the vibration switch is in the closed state under the vibration condition, and the circuit is turned on. 3.3V represents that the vibration switch is in the open state under the non-vibration condition, and the circuit is not turned on. In fact, due to various factors, the pin of the chip (MCU) is generally slightly lower than 3.3V, about 3V.

[0072] Please continue to refer to Figure 3 , s1 represents the above-mentioned 3.3V condition, i.e. the pin is at high level, s3 is called the pin at low level, s2 is the moment when the pin changes from high level to low level, which is called falling edge, and s4 is the rising edge. In the embodiment of the present application, all the falling edges in Figure 3 are marked as d1, d2, d3 and d4, and all the rising edges are marked as u1, u2, u3 and u4.

[0073] In one embodiment, step S3, the duration of low level in several periods is calculated according to the waveform data, including:

[0074] S31, the duration of low level in each period is calculated according to the rising edge and the falling edge in each period.

[0075] In the embodiment of the present application, Figure 3 , the waveform diagram shown in can determine the waveform data of one period, wherein the waveform composed of s1, s2, s3 and s4 is called one period, and one period includes a high level, a low level, a rising edge and a falling edge.

[0076] The duration of low level in each period is:

[0077] t1=u1-d1;

[0078] Wherein, t1 is the low level duration of a single period, u1 is the rising edge, and d1 is the falling edge.

[0079] S32, accumulate the low level duration of all periods to obtain all low level durations.

[0080] In the embodiment of the present application, the total number of periods can be 100, and all low level durations t100 in the 100 periods can be:

[0081] t100 = u1-d1+u2-d2+…+u100-d100.

[0082] In one embodiment, step S4, the total period time of several periods is calculated, including:

[0083] S41, according to the time when the falling edge of the last period is located and the time when the falling edge of the current period is located, the current period time is calculated;

[0084] In the embodiment of the present application, the period time of a period can be obtained by subtracting the time of two adjacent falling edges or rising edges. The period time to be calculated is T1, and the time when the adjacent two falling edges d1 and d2 are located is selected, and is recorded as T d1 、T d2 , then:

[0085] T1 = T d2 -T d1 .

[0086] In the embodiment of the present application, the low level time ratio of each period can be calculated according to the low level duration of each period and the period time of each period:

[0087] θ = t1 ÷ T1 × 1.00;

[0088] Wherein, θ is the low level time ratio of each period.

[0089] S42, the falling edge time of all periods is accumulated to obtain the total period time.

[0090] In the embodiment of the present application, the total period time T100 of 100 periods is calculated

[0091] T100 = T d100 -T d1 .

[0092] In the embodiment of the present application, the low level time ratio of 100 periods is obtained:

[0093] θ 100 = t100 ÷ T100 × 1.00.

[0094] Please refer to Figure 4 , the low level time ratio calculation flowchart of the embodiment of the application.

[0095] In the embodiment of the application, when the swing amplitude of the electric vehicle instrument is small, the vibration switch is closed for a short time, the low level time of the pin read by the 3-chip is short, and the value of θ 100 will be small. Assuming that the given coefficient is 0.5, when θ 100 is greater than 0.5, the 3-chip (MCU) will determine that the swing occurring in this period meets the alarm condition, and then start the alarm, thereby effectively improving the accuracy of the electric vehicle alarm.

[0096] Please refer to Figure 5 , another flowchart of the electric vehicle alarm method provided by the embodiment of the application.

[0097] The embodiment of the application has the following beneficial effects:

[0098] The embodiment of the application detects the continuous voltage waveform signal generated by the internal vibration switch of the electric vehicle, and calculates the low level time ratio in a preset period based on the continuous voltage waveform signal, and compares the low level time ratio with the preset threshold value, which can accurately determine whether the current swing of the electric vehicle meets the alarm condition, without deploying high-end vibration switches to detect the swing amplitude, which not only effectively reduces the equipment deployment cost of the electric vehicle alarm, but also effectively improves the accuracy of the electric vehicle alarm.

[0099] Please refer to Figure 6 , based on the same inventive concept as the above embodiment, one embodiment of the application provides an electric vehicle alarm device, comprising:

[0100] The waveform signal detection module 10 is configured to detect a continuous voltage waveform signal generated by an internal vibration switch of an electric vehicle when the electric vehicle instrument is shaken;

[0101] The waveform data determination module 20 is configured to determine waveform data in each period according to the continuous voltage waveform signal, wherein the waveform data comprises high level, low level, rising edge and falling edge;

[0102] The duration calculation module 30 is configured to calculate all low level durations in a plurality of periods according to the waveform data;

[0103] The low level time ratio calculation module 40 is configured to calculate the total period time of the plurality of periods, and calculate the low level time ratio in the total period time according to all low level durations and the total period time;

[0104] The alarm module 50 is used for comparing the low-level time proportion with a preset threshold value, and when the low-level time proportion is higher than the preset threshold value, it is judged that the current shaking meets the alarm condition, and alarm information is generated.

[0105] In one embodiment, the waveform signal detection module 10 is further used for:

[0106] According to the opening state and the closing state of the vibration switch according to the shaking, the corresponding continuous voltage waveform signal is generated according to the opening state and the closing state.

[0107] In one embodiment, the corresponding continuous voltage waveform signal is generated according to the opening state and the closing state, comprising:

[0108] The pin of the chip is set to an up pull input mode, when the vibration switch is in the opening state, the pin of the chip is pulled low to a low level, and when the vibration switch is in the closing state, the pin of the chip is kept outputting a high level.

[0109] In one embodiment, the waveform data determination module 20 is further used for:

[0110] The change from high level to low level in each period is taken as a falling edge, and the change from low level to high level in each period is taken as a rising edge.

[0111] In one embodiment, the duration calculation module is further used for:

[0112] According to the rising edge and the falling edge in each period, the low-level duration in each period is calculated;

[0113] The low-level durations of all periods are accumulated to obtain all low-level durations.

[0114] In one embodiment, the low-level time proportion calculation module is further used for:

[0115] According to the time at which the falling edge of the previous period is located and the time at which the falling edge of the current period is located, the current period time is calculated.

[0116] The falling edge times of all periods are accumulated to obtain the total period time.

[0117] One embodiment of the present application provides a computer readable storage medium, which comprises a stored computer program, wherein when the computer program runs, the computer readable storage medium controls the device where the computer readable storage medium is located to execute the electric vehicle alarm method as described above.

[0118] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, can also make several improvements and refinements, these improvements and refinements are also considered to be within the scope of the present application.

Claims

1. An electric vehicle alerting method, characterized by, The method comprises the following steps: When the electric vehicle instrument shakes, a continuous voltage waveform signal generated by an internal vibration switch of the electric vehicle is detected; According to the continuous voltage waveform signal, waveform data in each cycle is determined, and the waveform data comprises a high level, a low level, a rising edge and a falling edge; According to the waveform data, all durations of the low level in a plurality of cycles are calculated; The total cycle time of the plurality of cycles is calculated, and a low level time ratio in the total cycle time is calculated according to all durations of the low level and the total cycle time; The low level time ratio is compared with a preset threshold value, and when the low level time ratio is higher than the preset threshold value, it is judged that the current shaking meets an alarm condition, and alarm information is generated.

2. The electric vehicle alerting method of claim 1, wherein, The method further comprises the following steps: According to the opening state and the closing state of the vibration switch, corresponding continuous voltage waveform signals are generated.

3. The electric vehicle alerting method of claim 2, wherein, The method further comprises the following steps: The pin of the chip is set to an up pull input mode, the pin of the chip is pulled low to a low level when the vibration switch is in the closing state, and the pin of the chip outputs a high level when the vibration switch is in the opening state.

4. The electric vehicle alerting method of claim 1, wherein, The method further comprises the following steps: The change of the high level to the low level in each cycle is taken as the falling edge, and the change of the low level to the high level in each cycle is taken as the rising edge.

5. The electric vehicle alerting method of claim 1, wherein, The method further comprises the following steps: According to the rising edge and the falling edge in each cycle, the low level duration in each cycle is calculated; All low level durations of all cycles are accumulated to obtain all durations of the low level.

6. The electric vehicle alerting method of claim 1, wherein, The method further comprises the following steps: According to the time at which the falling edge of the last cycle is located and the time at which the falling edge of the current cycle is located, the current cycle time is calculated; The falling edge times of all cycles are accumulated to obtain the total cycle time.

7. An electric vehicle alarm apparatus, characterized by The method comprises the following steps: The waveform signal detection module is configured to detect a continuous voltage waveform signal generated by an internal vibration switch of the electric vehicle when the electric vehicle instrument shakes; The waveform data determination module is configured to determine waveform data in each cycle according to the continuous voltage waveform signal, and the waveform data comprises a high level, a low level, a rising edge and a falling edge; The duration calculation module is configured to calculate all durations of the low level in a plurality of cycles according to the waveform data; The low level time ratio calculation module is configured to calculate the total cycle time of the plurality of cycles, and calculate a low level time ratio in the total cycle time according to all durations of the low level and the total cycle time; The alarm module is configured to compare the low level time ratio with a preset threshold value, judge that the current shaking meets an alarm condition when the low level time ratio is higher than the preset threshold value, and generate alarm information.

8. The electric vehicle warning device of claim 7, wherein the at least one light source is a light emitting diode. The duration calculation module is further configured to According to the rising edge and the falling edge in each cycle, the low level duration in each cycle is calculated; All the low level durations of all cycles are accumulated to obtain all the low level durations.

9. The electric vehicle warning device of claim 7, wherein the alarm is activated when the vehicle is in motion and the door is opened. The low level time proportion calculation module is further configured to: According to the time at which the falling edge of the previous cycle is located and the time at which the falling edge of the current cycle is located, the current cycle time is calculated; The falling edge times of all cycles are accumulated to obtain the total cycle time.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises a stored computer program, wherein the computer program controls the device in which the computer readable storage medium is located to execute the electric vehicle alarm method according to any one of claims 1 to 6 when the computer program is running.

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