KR101728601B1 - System for monitoring active vehicle safety and havesting energy - Google Patents
System for monitoring active vehicle safety and havesting energy Download PDFInfo
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- KR101728601B1 KR101728601B1 KR1020150069537A KR20150069537A KR101728601B1 KR 101728601 B1 KR101728601 B1 KR 101728601B1 KR 1020150069537 A KR1020150069537 A KR 1020150069537A KR 20150069537 A KR20150069537 A KR 20150069537A KR 101728601 B1 KR101728601 B1 KR 101728601B1
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- tire
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- sensor
- air pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
- B60C23/002—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving by monitoring conditions other than tyre pressure or deformation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
- B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0474—Measurement control, e.g. setting measurement rate or calibrating of sensors; Further processing of measured values, e.g. filtering, compensating or slope monitoring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention relates to a detection unit for detecting air pressure and multiple vibration frequencies of each tire using a pressure sensor and a multifrequency vibration sensor provided in each tire and a detection unit for detecting at least one of the detected air pressure and the multiple vibration frequency And a micro controller unit (MCU) for monitoring a state of each of the tires by comparing a threshold value corresponding to the vehicle state variable with a threshold range value corresponding to the vehicle state variable.
Description
The present invention relates to an active vehicle safety monitoring and energy harvesting system, and more particularly, to an active vehicle safety monitoring and energy harvesting system for monitoring the state of a vehicle in real time using a detection value and a harvesting energy obtained through a sensor, ≪ / RTI >
Factors that can cause a vehicle accident include, but are not limited to, vehicles that exceed vehicle load carrying criteria (e.g., vans, etc.), tire failure, tire aging (or crack), tire wear, tire deformation (e.g., Foreign matter attached to the tire, lack of tire air pressure, and combined factors.
Conventionally, the method of measuring the load of a vehicle is a method of measuring the shaft weight by guiding a moving vehicle to a metering station or a shoulder line, and using the middle shaft after stopping.
However, in the conventional method of measuring the load of the vehicle, it is necessary to arrange the specialists who install the vehicle on the vehicle guiding and the vehicle on the hourly basis, and the vehicle exceeding the vehicle load load standard must be visually identified, Technical efficiency was very low.
In the conventional method of measuring the tire condition, the air pressure of the tire is monitored in real time using the tire air pressure monitoring system. However, since only the information of the air pressure is informed to the driver, there is a limit to accurately predict tire damage.
For example, in a conventional tire air pressure monitoring system, when measuring the air pressure of a tire with a deformed tire or foreign matter, satisfactory air pressure in the normal range may be measured and it may be difficult to predict the damage of the correct tire.
The present invention relates to an active vehicle safety monitoring and energy harvesting system that actively recognizes factors that cause a vehicle accident by comparing a detected value for at least one of the air pressure and multiple vibration frequencies of each tire with a threshold range value corresponding to the vehicle state variable System.
The present invention provides an active vehicle safety monitoring and energy harvesting system that harvests multiple vibrational frequencies to electrical energy and transmits information about detected values using harvested electrical energy.
An active vehicle safety monitoring and energy harvesting system according to an embodiment of the present invention includes a detection unit that detects air pressure and multiple vibration frequencies of each tire using a pressure sensor and a multi-frequency vibration sensor provided in each tire, And a micro controller unit (MCU) for monitoring the state of each tire by comparing a detected value for at least one of the detected air pressure and the multiple vibration frequency with a threshold range value corresponding to the vehicle state variable.
The multi-frequency vibration sensor includes a fixing body; And a plurality of piezoelectric elements having a predetermined length, depth, and spacing, having different widths, and extending on at least one of the one surface and both surfaces of the fixture.
Wherein said detection unit comprises a first conversion circuit for converting at least one vibration frequency having a predetermined response characteristic at said detected multiple vibration frequencies into said detection value and for converting said detected multiple vibration frequencies to electrical energy, And a second conversion circuit that transmits information on the converted detection value to the microcontroller unit using electrical energy.
In addition, the detection unit can detect the vehicle state variable for at least one of vehicle speed, vehicle load, and vehicle compartment load using a speed sensor and a weight sensor.
In addition, the detection unit can detect temperature and sound of each tire using a temperature sensor and an acoustic sensor provided in each tire.
The microcontroller unit can check the state of each tire through the detected air pressure and the detected multiple vibration frequencies, and can precisely monitor the state of each tire through the detected temperature and the detected sound.
According to one aspect of the present invention, the detection unit generates each cumulative value for at least one of the detected air pressure, the detected multiple vibration frequencies, the detected temperature, and the detected sound, The average value, and the deviation of the sum of the sum, the mean, and the deviation.
The detection unit according to an embodiment of the present invention uses a pressure sensor and a multi-frequency vibration sensor provided in each tire to detect the air pressure and multiple vibration frequencies of the respective tires, a speed sensor, A second detection unit for detecting a vehicle state variable for at least one of a speed, a vehicle load and a load per vehicle compartment, and a second detection unit for detecting a detected value for at least one of the detected air pressure and the detected multiple vibration frequency, And a control unit for controlling the microcontroller unit comparing the threshold range values and monitoring the state of each tire to provide the detected value and the vehicle state variable.
The microcontroller unit according to an embodiment of the present invention includes a first obtaining unit that obtains a detected value of at least one of the air pressure and the multiple vibration frequencies of the respective tires detected by the pressure sensor and the multi- A second obtaining section for obtaining a vehicle state variable for at least one of a vehicle speed, a vehicle load, and a load per vehicle segment detected by a speed sensor and a weight sensor, and a second obtaining section for obtaining a threshold corresponding to the obtained detected value and the vehicle state variable And an inspection unit for comparing the range values and monitoring the condition of each of the tires.
The method for operating a vehicle safety monitoring and energy harvesting system according to an embodiment of the present invention includes detecting air pressure and multiple vibration frequencies of each tire using a pressure sensor and a multi-frequency vibration sensor provided in each tire, And monitoring the status of each tire by comparing a detected value for at least one of the detected air pressure and the detected multiple vibration frequency with a threshold range value corresponding to the vehicle condition variable.
A method of operating a detection unit according to an embodiment of the present invention includes the steps of detecting air pressure and multiple vibration frequencies of each tire using a pressure sensor and a multi-frequency vibration sensor provided in each tire, using a speed sensor and a weight sensor Detecting a vehicle condition variable for at least one of a vehicle speed, a vehicle load and a load per vehicle compartment, and determining a threshold value corresponding to the vehicle condition variable and a detected value for at least one of the detected air pressure and the detected multiple vibration frequency And controlling the microcontroller unit comparing the range values to monitor the state of each tire to provide the detected value and the vehicle state variable.
A method of operating a microcontroller unit according to an embodiment of the present invention includes obtaining a detection value of at least one of an air pressure and a multiple vibration frequency of each tire detected by a pressure sensor and a multi- Obtaining a vehicle state variable for at least one of a vehicle speed, a vehicle load, and a load per vehicle segment detected by a speed sensor and a weight sensor, and calculating a threshold range value corresponding to the obtained detected value and the vehicle state variable And monitoring the status of each of the tires in comparison.
The present invention can actively recognize a factor that causes a vehicle accident by comparing the detected value for at least one of the air pressure and the multiple vibration frequency of each tire with the threshold range value corresponding to the vehicle state variable.
The present invention can harvest multiresponse frequencies to electrical energy and transmit information about detected values using harvested electrical energy.
1 is a block diagram illustrating an active vehicle safety monitoring and energy harvesting system in accordance with an embodiment of the present invention.
2 is a block diagram showing a detection unit according to an embodiment of the present invention.
FIG. 3 is a block diagram illustrating a detection unit including multiple vibrational frequencies of FIG. 2;
4 is a view showing a multi-frequency vibration sensor according to an embodiment of the present invention.
FIG. 5 shows an example of characteristics of multiple vibration frequencies detected from the multi-frequency vibration sensor of FIG.
6 is an example showing deformation characteristics of a tire according to changes in multiple vibration frequencies and air pressure.
Fig. 7 is an example showing the tire deformation.
8A shows an example of a tire balance according to tire deformation.
FIG. 8B shows an example of a vehicle including an active vehicle safety monitoring and energy harvesting system according to an embodiment of the present invention.
Fig. 9 is a block diagram showing a detection unit including the acoustic sensor of Fig. 2; Fig.
10 is an example showing a waveform for the detected sound in Fig.
11 is a block diagram illustrating a microcontroller unit according to an embodiment of the present invention.
12 is a flowchart illustrating an operation method of an active vehicle safety monitoring and energy harvesting system according to an embodiment of the present invention.
13 is a flowchart showing an operation method of the detection unit according to the embodiment of the present invention.
14 is a flowchart illustrating an operation method of a microcontroller unit according to an embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and accompanying drawings, but the present invention is not limited to or limited by the embodiments.
In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The terminology used herein is a term used for appropriately expressing an embodiment of the present invention, which may vary depending on the user, the intent of the operator, or the practice of the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.
1 is a block diagram illustrating an active vehicle safety monitoring and energy harvesting system in accordance with an embodiment of the present invention.
Referring to FIG. 1, an active vehicle safety monitoring and
The
The pressure sensor can detect the air pressure such as the internal pressure of the tire for the running or stopped vehicle, and the air pressure can detect the tire damage (for example, tire failure, tire aging, tire wear, etc.) Can be used to monitor status.
The multi-frequency vibration sensor can detect multiple vibrational frequencies generated in the tires of a running vehicle, and the multiple vibrational frequencies can be used to detect tire damage, tire deformation (e.g., tire wheel deformation), foreign matter attached to the tire, Can be used to monitor the loading weight condition of the vehicle.
In addition, the vibrational energy that generates multiple vibrational frequencies can be used as electrical energy for communication with the
2 is a block diagram showing a detection unit according to an embodiment of the present invention.
Referring to FIG. 2, the
The
Here, the
FIG. 3 is a block diagram illustrating a detection unit including multiple vibrational frequencies of FIG. 2;
Referring to FIG. 3, the
The
The
In addition, since the range of the vibration frequency can be varied according to the tire deformation, it is possible to detect the vibration frequency in various frequency ranges through the multi-frequency vibration sensor.
Hereinafter, the structure of the
4 is a view showing a multi-frequency vibration sensor according to an embodiment of the present invention.
Referring to FIG. 4, the
The plurality of fixed
A plurality of piezoelectric elements can detect multiple oscillation frequencies in multiple frequency ranges and can draw energy generated by the detected multiple oscillation frequencies.
Since each of the plurality of piezoelectric elements can respond to the vibration frequency with each other, the multi-frequency vibration sensor can detect the vibration in the multiple frequency range.
The
Further, the
Here, the
The energy harvesting through the plurality of piezoelectric elements is capable of harvesting only the energy drawn out from the piezoelectric element having the greatest amplitude among the multiple frequency vibrations or combining the energy drawn from each of the piezoelectric elements to perform harvesting.
FIG. 5 shows an example of characteristics of multiple vibration frequencies detected from the multi-frequency vibration sensor of FIG. 4, and FIG. 6 shows an example of deformation characteristics of a tire according to changes of multiple vibration frequencies and air pressure.
As shown in FIG. 5, the
For example, a frequency having the largest amplitude among a plurality of piezoelectric elements may be determined as a vibration frequency of the tire, or an average value of frequencies having an amplitude of a reference value or more may be determined as a vibration frequency of the tire.
Referring to FIG. 6, the variation amount of the multiple vibration frequency increases as the deformation of the tire increases, while the air pressure may be slightly increased as the deformation of the tire becomes larger. Hereinafter, the relationship between the air pressure and the multiple vibration frequency will be described in detail with reference to Figs. 7, 8A and 8B.
Fig. 7 shows an example showing a tire deformation, and Fig. 8A shows an example showing a tire balance according to a tire deformation.
Referring to Fig. 7, the tire of the vehicle may have a slight air pressure deviation before and after the wheel deformation, but vibration may occur during running, and there may be a vibration deviation before and after the wheel deformation.
Referring to FIG. 8A, the active vehicle safety monitoring and
According to the embodiment, the active vehicle safety monitoring and
In addition, the active vehicle safety monitoring and
At this time, the active vehicle safety monitoring and
In addition, the active vehicle safety monitoring and
In addition, the active vehicle safety monitoring and
According to another embodiment, the active vehicle safety monitoring and
Further, the active vehicle safety monitoring and
In addition, the active vehicle safety monitoring and
Therefore, the active vehicle safety monitoring and
FIG. 8B shows an example of a vehicle including an active vehicle safety monitoring and energy harvesting system according to an embodiment of the present invention.
Referring to FIG. 8B, the active vehicle safety monitoring and
According to an embodiment, the active vehicle safety monitoring and
According to another embodiment, when the active vehicle safety monitoring and
Wherein the state information of each tire may include a detected value including at least one of the detected air pressure and the detected multiple vibration frequencies, and comparing the detected value with a threshold value corresponding to the vehicle state variable or the vehicle state variable . ≪ / RTI >
The critical range value may include at least one of the air pressure corresponding to the vehicle state variable, the multiple vibration frequency, the temperature, and the normal range value of the sound.
The critical range value may be a value considering at least one of the speed of the vehicle, the vehicle load, the load per vehicle segment, the road on which the vehicle is traveling, the road surface, the type of vehicle, and the type of tire.
Referring again to FIG. 3, the first conversion circuit 110b may convert at least one vibration frequency having a predetermined response characteristic at the detected multiple vibration frequencies into a detection value.
According to the embodiment, the first conversion circuit 110b may include a first ADC (Analog Digital Converter) 111b and a lower stage (not shown).
The
The
The
The second ADC 111c converts the DC voltage into the detected multiple vibration frequency DC voltage. The
According to the embodiment, the
The
According to the embodiment, the
Fig. 9 is a block diagram showing a detection unit including the acoustic sensor of Fig. 2, and Fig. 10 is an example showing a waveform for the detected sound of Fig.
9, the
The
Referring to FIG. 10, the detected sound may include a tire sound with a foreign substance attached thereto, a tire sound according to the state of the road (e.g., a general road expressway and an unpaved road), a road surface (e.g., The tire sound according to the kind of the vehicle (for example, the internal combustion engine of the passenger car, the lorry or each vehicle), the sound according to the tire deformation and the sound according to the tire type according to various conditions, But are not limited to, waveforms.
According to the embodiment, the conversion circuit 110b may include an
The
Thus, the
According to the embodiment, the
In addition, the
According to the embodiment, since the air pressure of the tire can be changed according to the temperature, the temperature sensor can detect the temperature for accurately correcting the tire air pressure of the stopped or running vehicle.
2, the
Further, the
The
For example, the speed and load of the vehicle may be referred to for monitoring the condition of the tire, and the vehicle state variable including the vehicle speed and load may be compared with the detected value to determine whether the tire of the vehicle is normal or abnormal It may be a variable that is referenced.
Here, the circuit structure of the speed sensor and the weight sensor is the same as the circuit structure shown in Figs. 3 and 9 (for example, the circuit for converting at least one of the speed and the weight detected in the sensor into the vehicle state variable and the vehicle state variable A circuit for transmitting information to the microcontroller unit, etc.).
The weight sensor is used to calculate the weight of the vehicle based on the vehicle load (for example, the vehicle own load, the vehicle load including the driver or the passenger and the vehicle load including the load), and the vehicle compartment load (for example, Shaft weight, load per vehicle seat, and load per loading position of the vehicle).
The
According to the embodiment, the
11 is a block diagram illustrating a microcontroller unit according to an embodiment of the present invention.
Referring to FIG. 11, the
The first obtaining
According to the embodiment, the first acquiring
The second obtaining
Vehicle condition variables include vehicle speed, vehicle load (vehicle self-load, vehicle load including driver or passenger load and vehicle load including load), and vehicle compartment load (load at each tire position, Load by loading position).
The
The critical range value may include at least one of the air pressure corresponding to the vehicle state variable, the multiple vibration frequency, the temperature, and the normal range value of the sound.
According to the embodiment, the
For example, the
In addition, the
Also, the
According to the embodiment, the critical range value may be a value considering at least one of the speed of the vehicle, the vehicle load, the load per vehicle segment, the road on which the vehicle is traveling, the road surface, the type of vehicle, and the type of tire.
12 is a flowchart illustrating an operation method of an active vehicle safety monitoring and energy harvesting system according to an embodiment of the present invention.
Referring to FIG. 12, in
According to an embodiment, the active vehicle safety monitoring and energy harvesting system may detect at least one of air pressure, multiple vibration frequencies, temperature, and acoustics at
The active vehicle safety monitoring and energy harvesting system monitors the status of each tire by comparing the detected value for at least one of the detected air pressure and the detected multiple vibration frequencies to a threshold range value corresponding to the vehicle condition variable in
According to an embodiment, in
The critical range value may include at least one of the air pressure corresponding to the vehicle state variable, the multiple vibration frequency, the temperature, and the normal range value of the sound.
The critical range value may be a value considering at least one of the speed of the vehicle, the vehicle load, the load per vehicle segment, the road on which the vehicle is traveling, the road surface, the type of vehicle, and the type of tire.
13 is a flowchart showing an operation method of the detection unit according to the embodiment of the present invention.
Referring to FIG. 13, in
Here, the detection unit may include, in
According to the embodiment, in
In
Vehicle condition variables include vehicle speed, vehicle load (e.g., vehicle self-load, vehicle load including driver or passenger and vehicle load including load), or vehicle compartment load (e.g., load per tire position The shaft weight for each tire pair, the load for each seat of the vehicle, and the load for each loading position of the vehicle).
The detection unit compares the detected value of at least one of the detected air pressure and the detected multiple vibration frequencies with the threshold value range corresponding to the vehicle state variable to detect the detected value The vehicle state variable is provided.
The critical range value may include at least one of the air pressure corresponding to the vehicle state variable, the multiple vibration frequency, the temperature, and the normal range value of the sound.
The critical range value may be a value considering at least one of the speed of the vehicle, the vehicle load, the load per vehicle segment, the road on which the vehicle is traveling, the road surface, the type of vehicle, and the type of tire.
14 is a flowchart illustrating an operation method of a microcontroller unit according to an embodiment of the present invention.
14, the microcontroller unit obtains a detection value for at least one of the air pressure and the multiple vibration frequencies of each tire detected by the pressure sensor and the multi-frequency vibration sensor provided in each tire,
According to an embodiment, the microcontroller unit may obtain at least one of air pressure, multiple oscillation frequencies, temperature and sound in
In
Vehicle condition variables include vehicle speed, vehicle load (e.g., vehicle self-load, vehicle load including driver or passenger and vehicle load including load), or vehicle compartment load (e.g., load per tire position The shaft weight for each tire pair, the load for each seat of the vehicle, and the load for each loading position of the vehicle).
In
The critical range value may include at least one of the air pressure corresponding to the vehicle state variable, the multiple vibration frequency, the temperature, and the normal range value of the sound.
The critical range value may be a value considering at least one of the speed of the vehicle, the vehicle load, the load per vehicle segment, the road on which the vehicle is traveling, the road surface, the type of vehicle, and the type of tire.
The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.
Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.
10: Active Vehicle Safety Monitoring and Energy Harvesting System
100: Detection unit
110: first detection unit
120: second detection section
130:
200: Microcontroller unit
210: first acquiring unit
220: second acquiring unit
230:
Claims (13)
A micro controller unit (MCU) for monitoring a state of each tire by comparing a detected value of at least one of the detected air pressure and the detected multiple vibration frequency with a threshold range value corresponding to a vehicle state variable,
/ RTI >
The multi-frequency vibration sensor
Fixture; And
A plurality of piezoelectric elements having a predetermined length, depth and spacing, having different widths, and extending on at least one of the one surface and both surfaces of the fixture,
Including active vehicle safety monitoring and energy harvesting systems.
The detection unit
A first conversion circuit for converting at least one vibration frequency having a predetermined response characteristic at the detected multiple vibration frequencies into the detection value; And
A second conversion circuit for converting the detected multiple oscillation frequencies into electrical energy and transmitting information about the converted detection value to the microcontroller unit using the converted electrical energy,
Including active vehicle safety monitoring and energy harvesting systems.
The detection unit
A speed sensor and a weight sensor are used to detect the vehicle condition variable for at least one of vehicle speed, vehicle load and load per vehicle compartment
Active vehicle safety monitoring and energy harvesting systems.
The detection unit
The temperature and sound of each tire are detected using a temperature sensor and an acoustic sensor provided in each tire
Active vehicle safety monitoring and energy harvesting systems.
The microcontroller unit
The state of each tire is checked through the detected air pressure and the detected multiple vibration frequency, and the state of each tire is closely monitored through the detected temperature and the detected sound
Active vehicle safety monitoring and energy harvesting systems.
The detection unit
Generating at least one of a cumulative value for at least one of the detected air pressure, the detected multiple vibration frequencies, the detected temperature, and the detected sound, and calculating at least one of a sum, an average, and a deviation for each cumulative value And generates the detection value
Active vehicle safety monitoring and energy harvesting systems.
A second detection unit for detecting a vehicle state variable for at least one of a vehicle speed, a vehicle load, and a load per vehicle segment using a speed sensor and a weight sensor; And
A microcontroller unit for comparing the detected value of at least one of the detected air pressure and the detected multiple vibration frequency with a threshold value value corresponding to the vehicle state variable to monitor the state of each tire, A control unit for controlling the state variable to be provided
Lt; / RTI >
The multi-frequency vibration sensor
Fixture; And
A plurality of piezoelectric elements having a predetermined length, depth and spacing, having different widths, and extending on at least one of the one surface and both surfaces of the fixture,
.
A second obtaining unit for obtaining a vehicle state variable for at least one of a vehicle speed, a vehicle load, and a load per vehicle segment detected by the speed sensor and the weight sensor; And
A monitoring unit for monitoring the state of each tire by comparing the obtained detection value with a threshold range value corresponding to the vehicle state variable,
Lt; / RTI >
The multi-frequency vibration sensor
Fixture; And
A plurality of piezoelectric elements having a predetermined length, depth and spacing, having different widths, and extending on at least one of the one surface and both surfaces of the fixture,
And a microcontroller unit.
Monitoring the state of each tire by comparing a detected value for at least one of the detected air pressure and the detected multiple vibration frequency with a threshold range value corresponding to a vehicle state variable
Lt; / RTI >
The multi-frequency vibration sensor
Wherein a plurality of piezoelectric elements are arranged on the surface of at least one of the first surface and the second surface of the fixed body, the plurality of piezoelectric elements having a predetermined length, depth and interval, and different widths from each other. Vehicle safety monitoring and method of operation of an energy harvesting system.
Detecting a vehicle state variable for at least one of a vehicle speed, a vehicle load, and a load per vehicle segment using a speed sensor and a weight sensor; And
A microcontroller unit for comparing the detected value of at least one of the detected air pressure and the detected multiple vibration frequency with a threshold value value corresponding to the vehicle state variable to monitor the state of each tire, Controlling which state variables are provided
Lt; / RTI >
The multi-frequency vibration sensor
A plurality of piezoelectric elements are arranged on a surface of at least one of a first surface and a second surface of the fixed body, wherein the plurality of piezoelectric elements have a predetermined length, depth and interval and have different widths. Method of operation of the unit.
Obtaining a vehicle state variable for at least one of a vehicle speed, a vehicle load, and a load per vehicle segment detected by a speed sensor and a weight sensor; And
Monitoring the state of each tire by comparing the obtained detected value with a threshold range value corresponding to the vehicle state variable
Lt; / RTI >
The multi-frequency vibration sensor
A plurality of piezoelectric elements are disposed on a surface of at least one of a first surface and a second surface of the fixed body, wherein the plurality of piezoelectric elements have a predetermined length, depth and spacing and have different widths. A method of operating a controller unit.
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KR20240069078A (en) | 2022-11-11 | 2024-05-20 | 주식회사 코아칩스 | Energy harvesting system for vehicle sensor power |
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KR20240069078A (en) | 2022-11-11 | 2024-05-20 | 주식회사 코아칩스 | Energy harvesting system for vehicle sensor power |
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