CN221251032U - Control device and control system for vehicle - Google Patents
Control device and control system for vehicle Download PDFInfo
- Publication number
- CN221251032U CN221251032U CN202322549294.0U CN202322549294U CN221251032U CN 221251032 U CN221251032 U CN 221251032U CN 202322549294 U CN202322549294 U CN 202322549294U CN 221251032 U CN221251032 U CN 221251032U
- Authority
- CN
- China
- Prior art keywords
- comparator
- vehicle
- acceleration
- control device
- reference threshold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001133 acceleration Effects 0.000 claims abstract description 84
- 230000004913 activation Effects 0.000 claims abstract description 34
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Air Bags (AREA)
Abstract
The present application proposes a control device for detection and video recording of a crash of a vehicle in a parked state, the control device comprising a comparator adapted to be connected to an acceleration sensor of the vehicle, the comparator comparing as input an acceleration signal of the vehicle in the parked state received from the acceleration sensor with a reference threshold value and outputting an activation signal for causing video recording of the crash when the acceleration signal exceeds the reference threshold value, the output of the comparator being fed back to the input of the comparator to form a latch circuit which latches the acceleration signal exceeding the reference threshold value so that the comparator continuously outputs the activation signal. The application has the advantages that: the detection and video recording of the collision of the vehicle in the parking state can be realized with a simple structure and low cost; the energy consumption of the entire control system is low, so that the battery of the vehicle can permanently supply power to the entire control system.
Description
Technical Field
The present application relates to a control device and a control system for a vehicle.
Background
After the vehicle is stopped, the driver typically turns the vehicle off and leaves the vehicle. Thereafter, if the vehicle is scratched by other vehicles or kicked by others, it is difficult for the vehicle owner to know who is dry, and it is difficult to follow the responsibility afterwards, because the vehicle owner is not on site.
Disclosure of utility model
The application aims to provide a control device for detecting and recording the collision of a vehicle in a parking state so as to facilitate the user to follow the responsibility afterwards.
According to a first aspect of the present application, there is provided a control apparatus for detecting and recording a crash of a vehicle in a parked state, the control apparatus comprising a comparator adapted to be connected to an acceleration sensor of the vehicle, the comparator comparing an acceleration signal of the vehicle in the parked state received from the acceleration sensor as an input with a reference threshold value and outputting an activation signal for causing recording of the crash when the acceleration signal exceeds the reference threshold value, the output of the comparator being fed back to the input of the comparator to form a latch circuit which latches the acceleration signal exceeding the reference threshold value so that the comparator continuously outputs the activation signal.
According to an alternative embodiment of the application, the comparator receives a voltage representing acceleration from the acceleration sensor as an input voltage of the comparator, the reference threshold is a threshold voltage representing an acceleration threshold, and the comparator outputs an output voltage representing a result of comparing the input voltage with the threshold voltage.
According to an alternative embodiment of the application, the comparator outputs a high level when the input of the comparator exceeds the reference threshold and a low level when the input of the comparator is below the reference threshold.
According to an alternative embodiment of the application, the latch circuit further comprises a resistor and/or a capacitor.
According to an alternative embodiment of the application, the control means is an airbag electronic control unit (AB-ECU, airbag Electronic Control Unit).
According to an alternative embodiment of the application, the control device comprises the acceleration sensor.
According to an alternative embodiment of the application, the acceleration sensor is a Low-g acceleration sensor (Low-g sensor).
According to an alternative embodiment of the application, the vehicle acceleration characterized by the reference threshold value is in the range of 0.15g to 0.2 g.
According to an alternative embodiment of the application, the vehicle acceleration characterized by the reference threshold is 0.18g.
According to an alternative embodiment of the application, the control means comprise a microcontroller (MCU, micro Control Unit) connected to the battery of the vehicle via switching means controlled by the output of the comparator and enabling the battery management integrated circuit of the battery to supply the microcontroller with an operating voltage upon receipt of the activation signal.
According to an alternative embodiment of the application, the output of the comparator is connected to a bus transceiver, the activation signal being adapted to wake up the bus transceiver and to cause the microcontroller to trigger the camera recording of the vehicle by sending a trigger signal to a recording electronic control unit (Video recording Electronic Control Unit) via the bus transceiver.
According to an alternative embodiment of the application, the acceleration sensor detects an X-direction acceleration in an X-direction of the vehicle and a Y-direction acceleration in a Y-direction of the vehicle.
According to an alternative embodiment of the application, the comparator comprises a first comparator for X-direction acceleration and a second comparator for Y-direction acceleration.
According to an alternative embodiment of the application, the activation signals comprise a first activation signal output by the first comparator and a second activation signal output by the second comparator, both of which are capable of causing a video of the crash.
According to a second aspect of the present application, there is provided a control system for a vehicle, the control system comprising at least:
A battery; and
The control device;
wherein the battery continuously supplies power to the acceleration sensor and the comparator of the control device in a parking state of the vehicle.
In at least some embodiments, the positive effects of the application are: the collision of the vehicle in the parking state can be detected and recorded; the short acceleration signal is latched through the latch until the microcontroller works normally; by implementing in the airbag electronic control unit, no additional sensors are required; by means of a low-g sensor with low energy consumption, a permanent power supply by means of the battery of the vehicle is made possible.
Drawings
The principles, features and advantages of the present application may be better understood by describing the present application in more detail with reference to the drawings. The drawings include:
fig. 1 schematically shows a situation in which a vehicle is crashed in a parked state.
Fig. 2 schematically shows an example of the control system of the present application in a block diagram.
Detailed Description
In order to make the technical problems, technical solutions and advantageous technical effects to be solved by the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and a plurality of exemplary embodiments. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the application.
Fig. 1 schematically shows a situation in which a vehicle 1 is crashed in a parked state. In this case, the vehicle 1 is parked, for example, on the parking space 3 and has been switched off. At this time, the other vehicle 2 is inadvertently bumped, particularly scratched, onto the vehicle 1 during the reverse operation, for example. If the owner of the other vehicle 2 finds that the owner of the vehicle 1 is not on site, the owner of the other vehicle 2 is likely to drive away directly, while the owner of the vehicle 1 is more difficult to follow.
In order to be able to follow, the owner of the vehicle 1 may wish that the vehicle 1 has the function of automatically recording such a collision in the parked state.
To this end, the application proposes a control system. The control system includes control means for detecting and recording a collision of the vehicle 1 in the parked state.
Fig. 2 schematically shows an example of the control system of the present application in a block diagram. In fig. 2, the power supply connection is shown in solid lines, while the signal connection is shown in broken lines.
As shown in fig. 2, the control device includes a comparator 61 adapted to be connected to the acceleration sensor 60 of the vehicle 1, the comparator 61 comparing, as an input, an acceleration signal of the vehicle 1 in a parked state received from the acceleration sensor 60 with a reference threshold 610 and outputting an activation signal for causing video recording of a collision when the acceleration signal exceeds the reference threshold 610. Here, the output of the comparator 61 is fed back to the input of the comparator 61 to form a latch circuit, and the latch circuit latches the acceleration signal exceeding the reference threshold 610 to cause the comparator 61 to continuously output the activation signal.
In the above-described aspect, whether the vehicle 1 has collided or not is detected by the comparator 61. Since the crash is generally brief, the acceleration signal generated by the crash exceeding the reference threshold 610 is also brief, which is insufficient to wake up the microcontroller 62 for causing the video to be recorded. Here, the output of the comparator 61 is fed back to the input of the comparator 61 to form a latch circuit. Specifically, when the comparator 61 receives an acceleration signal exceeding the reference threshold 610, the comparator 61 outputs, for example, a high level. The high level is fed back to the input of the comparator 61 to cause the input of the comparator 61 to be continuously higher than the reference threshold value, thereby latching the acceleration signal exceeding the reference threshold value 610 and causing the comparator 61 to continuously output the activation signal. The comparator 61 in particular outputs an activation signal at least until the corresponding microcontroller or electronic control unit is operating properly. Here, for simplicity, components such as a resistor and a capacitor in the latch circuit are omitted. As is known to those skilled in the art, there are many possible ways to implement latch circuits to provide components such as resistors and capacitors.
As shown in fig. 2, the control system further includes a battery 4. The battery 4 is, for example, a low-voltage battery of the vehicle 1. The battery 4 continuously supplies power to the acceleration sensor 60 and the comparator 61 of the control device in the parked state of the vehicle 1. Thus, although the vehicle 1 is flameout, the acceleration sensor 60 and the comparator 61 operate normally to detect that the vehicle 1 is crashed in the parked state. The battery 4 has, in particular, a battery management integrated circuit 41. The voltage of the battery 4, for example, 12 volts, can be converted into a voltage required by the electrical appliance, for example, a voltage of 3.3 volts, by the battery management integrated circuit 41.
According to an exemplary embodiment of the present application, the comparator 61 receives a voltage representing acceleration from the acceleration sensor 60 as an input voltage of the comparator 61, the reference threshold 610 is a threshold voltage representing the acceleration threshold, and the comparator 61 outputs an output voltage representing a comparison result of the input voltage and the threshold voltage. The comparator 61 outputs, for example, a high level when the acceleration signal exceeds the reference threshold 610 or the input voltage exceeds the threshold voltage. The comparator 61 outputs, for example, a low level when the acceleration signal is below the reference threshold 610 or the input voltage is below the threshold voltage.
According to an exemplary embodiment of the present application, the acceleration sensor 60 is a low g acceleration sensor. Low g acceleration sensors have significantly less power consumption. Thus, in a state where the vehicle 1 is turned off, the battery 4 of the vehicle 1 can permanently supply power to the acceleration sensor 60.
According to an exemplary embodiment of the application, the vehicle acceleration characterized by the reference threshold 610 is in the range of 0.15g to 0.2g, in particular 0.18g. Thereby excluding ambient noise. The environmental noise is, for example, heavy rain, heavy wind, vibration caused by running of surrounding heavy vehicles, or the like. The acceleration caused by ambient noise is typically between 0 and 0.15 g. If acceleration exceeding the range is detected, it may be determined that the vehicle 1 is crashed.
According to an exemplary embodiment of the present application, as shown in fig. 2, the acceleration sensor 60 detects an X-direction acceleration in the X-direction of the vehicle 1 and a Y-direction acceleration in the Y-direction of the vehicle 1. The acceleration sensor 60 is here, for example, a biaxial acceleration sensor. Accordingly, the comparator 61 includes a first comparator for acceleration in the X direction and a second comparator for acceleration in the Y direction. The first comparator is provided with a first latch circuit and the second comparator is provided with a second latch circuit. The activation signals include a first activation signal S1 output by the first comparator and a second activation signal S2 output by the second comparator, both of the first activation signal S1 and the second activation signal S2 being capable of causing video recording of a crash.
Instead of this, it is conceivable that the acceleration sensor 60 detects accelerations in more or less directions, such as only accelerations in the X-direction of the vehicle 1, while the comparator 61 correspondingly comprises more or less comparators. And will not be described in further detail herein.
According to an exemplary embodiment of the application, as shown in fig. 2, the control device comprises a microcontroller 62, the microcontroller 62 being connected to the battery 4 of the vehicle 1 via a switching device 5, the switching device 5 being controlled by the output of a comparator 61 and enabling the battery management integrated circuit 41 of the battery 4 to supply an operating voltage to the microcontroller 62 upon receipt of an activation signal. The microcontroller 62 may be configured to indirectly trigger video recording of the camera of the vehicle 1 or may be configured to directly trigger video recording of the camera of the vehicle 1. The switching device 5 may be integrated with the battery management integrated circuit 41, for example, the enable terminal of the battery management integrated circuit 41. It is also conceivable that the switching device 5 is integrated in the control device.
According to an exemplary embodiment of the application, the control device is an airbag electronic control unit. The acceleration sensor 60 is, for example, an acceleration sensor 60, in particular a low-g acceleration sensor 60, which is originally integrated in the airbag electronic control unit. Thereby eliminating the need for an additional acceleration sensor 60.
The microcontroller 62 is here, for example, a microcontroller 62 of an airbag electronic control unit. In order to cause video recordings, the video recording electronic control unit 8 needs to be woken up by the microcontroller 62 of the airbag electronic control unit via a bus, for example a CAN bus. For this purpose, as shown in fig. 2, the output of the comparator 61 is connected to the bus transceiver 7. The activation signal output by the comparator 61 wakes up the bus transceiver 7 and causes the microcontroller 62 to send a trigger signal via the bus transceiver 7 to the video electronic control unit 8 to trigger the camera video of the vehicle 1.
The entire flow is described below by way of example of a control device configured as an airbag electronic control unit:
The low g acceleration sensor 60 continues to detect the acceleration of the vehicle 1 until an acceleration exceeding the reference threshold 610 is detected, which is latched by the latch circuit and causes the comparator 61 to continue to output an activation signal, e.g., a high level;
The switching device 5, upon receipt of the activation signal, enables the battery management integrated circuit 41 to supply an operating voltage to the microcontroller 62 of the airbag electronic control unit, so that the microcontroller 62 wakes up from sleep mode, and in addition the activation signal wakes up the bus transceiver 7;
Based on the activation signal, the microcontroller 62 sends a trigger signal, for example a CAN message or a hardware signal, to the video electronic control unit 8 via the bus transceiver 7, whereby the video electronic control unit 8 wakes up;
the video electronic control unit 8 controls the camera of the vehicle 1 to record a specific time length;
finally, the whole system enters the sleep mode again.
In the above, the control means is illustratively an airbag electronic control unit. However, instead of this, it is also theoretically possible to: the control means are other electronic control units, such as a video electronic control unit 8. The microcontroller 62 of the video recording electronic control unit 8 controls the video recording of the camera of the vehicle 1 directly, for example, after being woken up on the basis of an activation signal, so that, for example, the control can be made simpler.
It is noted that the recitation of numerical ranges is understood to mean both the inclusive and the exclusive inclusion of the recited values. The X direction of the vehicle refers to the direction from the head to the tail or the longitudinal direction of the vehicle, and the Y direction of the vehicle refers to the horizontal direction perpendicular to the X direction or the lateral direction of the vehicle.
Although specific embodiments of the application have been described in detail herein, they are presented for purposes of illustration only and are not to be construed as limiting the scope of the application. Various substitutions, alterations, and modifications can be made without departing from the spirit and scope of the application.
List of reference numerals
1. Vehicle with a vehicle body having a vehicle body support
2. Another vehicle
3. Parking space
4. Battery cell
41. Battery management integrated circuit
5. Switching device
60. Acceleration sensor
61. Comparator with a comparator circuit
610. Reference threshold value
62. Micro controller
7. Bus transceiver
8. Video electronic control unit
S1 first activation Signal
S2 second activation signal
Claims (10)
1. A control device for detecting and recording a collision of a vehicle (1) in a parked state, characterized in that,
The control device comprises a comparator (61) adapted to be connected to an acceleration sensor (60) of the vehicle (1), the comparator (61) comparing an acceleration signal of the vehicle (1) in a parked state received from the acceleration sensor (60) as input with a reference threshold (610) and outputting an activation signal for causing video recording of the collision when the acceleration signal exceeds the reference threshold (610),
The output of the comparator (61) is fed back to the input of the comparator (61) to form a latch circuit which latches the acceleration signal exceeding a reference threshold (610) to cause the comparator (61) to continuously output the activation signal.
2. The control device of claim 1, wherein the control device comprises at least one of the following features:
-the comparator (61) receives from the acceleration sensor (60) a voltage representative of acceleration as an input voltage of the comparator (61), the reference threshold (610) being a threshold voltage representative of an acceleration threshold, the comparator (61) outputting an output voltage representative of a result of a comparison of the input voltage with the threshold voltage;
The comparator (61) outputs a high level when the input of the comparator (61) exceeds the reference threshold (610), and the comparator (61) outputs a low level when the input of the comparator (61) is below the reference threshold (610).
3. A control device according to claim 1 or 2, wherein the latch circuit further comprises a resistor and/or a capacitor.
4. A control device according to claim 1 or 2, characterized in that the control device is an airbag electronic control unit.
5. The control device according to claim 1 or 2, characterized in that the control device comprises at least one of the following features:
The control device comprises the acceleration sensor (60);
the acceleration sensor (60) is a low g acceleration sensor;
The vehicle acceleration characterized by the reference threshold (610) is in the range of 0.15g to 0.2 g.
6. The control device according to claim 1 or2, characterized in that the vehicle acceleration characterized by the reference threshold (610) is 0.18g.
7. The control device according to claim 1 or 2, characterized in that it comprises a microcontroller (62), which microcontroller (62) is connected to the battery (4) of the vehicle (1) via a switching device (5), which switching device (5) is controlled by the output of the comparator (61) and enables a battery management integrated circuit (41) of the battery (4) to supply the microcontroller (62) with an operating voltage upon receipt of the activation signal.
8. Control device according to claim 7, characterized in that the output of the comparator (61) is connected to a bus transceiver (7), the activation signal being adapted to wake up the bus transceiver (7) and to cause the microcontroller (62) to trigger the camera recording of the vehicle (1) by sending a trigger signal to a recording electronic control unit (8) via the bus transceiver (7).
9. Control device according to claim 1 or 2, characterized in that,
The acceleration sensor (60) detects an X-direction acceleration in an X-direction of the vehicle (1) and a Y-direction acceleration in a Y-direction of the vehicle (1);
The comparator (61) comprises a first comparator for X-direction acceleration and a second comparator for Y-direction acceleration;
The activation signals include a first activation signal output by the first comparator and a second activation signal output by the second comparator, both of which are capable of causing video recording of the crash.
10. A control system for a vehicle, the control system comprising at least:
A battery (4); and
The control device according to any one of claims 1 to 9;
Wherein the battery (4) continuously supplies power to the acceleration sensor (60) and the comparator (61) of the control device in the parking state of the vehicle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322549294.0U CN221251032U (en) | 2023-09-19 | 2023-09-19 | Control device and control system for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322549294.0U CN221251032U (en) | 2023-09-19 | 2023-09-19 | Control device and control system for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221251032U true CN221251032U (en) | 2024-07-02 |
Family
ID=91655516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322549294.0U Active CN221251032U (en) | 2023-09-19 | 2023-09-19 | Control device and control system for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221251032U (en) |
-
2023
- 2023-09-19 CN CN202322549294.0U patent/CN221251032U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6100814A (en) | Remote control wake up detector system | |
| US20150106540A1 (en) | Device, method and computer program for operating a data bus system of a motor vehicle | |
| CN102107632B (en) | Method for controlling state of vehicle electronic-control units serving as network nodes in CAN (controller area network) network | |
| CN105717827A (en) | Vehicle engine state detection device and method, and vehicle-mounted electronic device | |
| US20190379864A1 (en) | Vehicle surveillance | |
| CN213027990U (en) | Low-power consumption control system based on LIN awakening | |
| CN221251032U (en) | Control device and control system for vehicle | |
| US9145100B2 (en) | In-vehicle ECU | |
| JP5065562B2 (en) | Circuit device for activating CAN bus control device | |
| JP2006290162A (en) | Control unit for automobile | |
| JP6493874B2 (en) | Switch monitoring circuit | |
| JP2009132366A (en) | Switch control device for vehicle | |
| US9994174B2 (en) | Smart power supply interface, vehicle-mounted electronic component with the same and method of controlling the same | |
| CN113126586B (en) | Wake-up diagnostic device and wake-up diagnostic method | |
| KR101372215B1 (en) | A electrical apparatus controlling system of car | |
| CN212873573U (en) | Power supply control circuit of vehicle-mounted electronic unit, vehicle-mounted electronic unit and ETC system | |
| CN214295420U (en) | Vibration awakening system, tire pressure detection device and automobile | |
| CN220067254U (en) | Motor control circuit and motor wake-up circuit | |
| CN217935126U (en) | Battery thermal runaway monitoring awakening circuit and automobile | |
| US20020005666A1 (en) | Electronic unit and method for detecting a polarity inversion of the onboard power supply voltage in motor vehicles | |
| JP6670636B2 (en) | Power supply | |
| JP3019296B2 (en) | Engine starter | |
| CN218431165U (en) | Monitoring device for motor vehicle cabin | |
| CN217456186U (en) | Alarm abnormity control system | |
| US11693437B1 (en) | Electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |