CN215068373U - Automobile remote video guarding device - Google Patents
Automobile remote video guarding device Download PDFInfo
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- CN215068373U CN215068373U CN202121053344.0U CN202121053344U CN215068373U CN 215068373 U CN215068373 U CN 215068373U CN 202121053344 U CN202121053344 U CN 202121053344U CN 215068373 U CN215068373 U CN 215068373U
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Abstract
The embodiment of the utility model discloses long-range video guard device of car sets up a plurality of cameras and gathers video data, sets up a plurality of sensors simultaneously and detects the control vehicle accident, and the master controller is saved little video file according to the period and is added marks such as date time subtitle, corresponding video data on when detecting the vehicle emergence accident. The utility model discloses invalid data upload can be reduced, query efficiency is improved.
Description
Technical Field
The utility model relates to a car tracking technology field especially relates to a car remote video guard device.
Background
The existing automobile video guard device effectively uploads videos in real time above a technical difficulty, and generally, videos in the whole time period are recorded locally, and then related video query or data packaging uploading platform is carried out locally. Due to the fact that video transmission is delayed, when an automobile is in an accident in the driving process or is scratched and maliciously damaged in the parking process, the situation of on-site video transmission is difficult to effectively transmit in time. In addition, more videos irrelevant to accidents are uploaded from the large video files, so that not only is terminal data flow and storage space wasted, but also effective information is submerged, and later-stage query is difficult. In view of the problems that the existing automobile video guarding device cannot upload the video of the automobile scene in real time, the uploaded video data contains a large amount of videos irrelevant to accidents, the query efficiency is influenced, the data flow and the storage space of a terminal are wasted, and the like, improvement is needed.
SUMMERY OF THE UTILITY MODEL
To the defect that prior art exists, the utility model provides an effectively report video data's long-range video guard's of car device in real time.
For solving above technical problem, the utility model provides a long-range video guard device of car, including loading camera group, master controller and the communication module on the car, this camera group, master controller and communication module connect gradually, and wherein camera group is used for recording video file in real time, and the master controller can be used to process video file for taking the time mark's little video file, and communication module can be used to upload to cloud ware with little video file.
Furthermore, the camera group comprises a front camera, a rear camera, a left camera and a right camera which respectively support the UVC protocol, and the front camera, the rear camera, the left camera and the right camera are respectively used for recording video files in front of the vehicle, behind the vehicle, on the left of the vehicle and on the right of the vehicle.
Further, a sensor group is arranged and connected with the main controller and used for detecting and outputting the detection parameters in real time, so that the main controller processes the detection parameters according to a preset strategy to identify and output the automobile accident message, and uploads the automobile to the cloud server through the communication module.
And when the vertical acceleration data is smaller than a preset vertical acceleration threshold value and the horizontal acceleration data is larger than the preset horizontal acceleration threshold value, the main controller judges that the automobile collides and outputs a collision warning message.
Further, the acceleration sensor is an MMA8452, and the MMA8452 configures the following peripheral circuits: pin 1 is connected with an internal power supply and grounded through a capacitor C1, pin 2 is grounded through a capacitor C2, pin 4 is connected with the internal power supply and connected with a serial clock interface of a master control module through a resistor R1, pin 6 is connected with the internal power supply and connected with a serial data interface of the master control module through a resistor R2, pin 7 is grounded, pin 9 is connected with an inertial interrupt I, pin 11 is connected with an inertial interrupt II, pin 14 is connected with an external power supply and grounded through a capacitor C3, pin 5, pin 10 and pin 12 are grounded, and pin 3, pin 8, pin 13, pin 15 and pin 16 are vacant.
Further, the sensor group comprises a vibration sensor and an acceleration sensor, the vibration sensor and the acceleration sensor are respectively connected with the main controller, the vibration sensor is used for detecting and outputting vibration signals of the automobile in real time, the acceleration sensor is used for detecting and outputting acceleration signals of the automobile in real time, so that the main controller receives and processes the vibration signals and the acceleration signals, and when the acceleration signals represent that the automobile is static and the vibration signals represent that the automobile vibrates, the main controller judges that the automobile scratches and outputs scratch warning messages.
Further, the vibration sensor is a ball vibration switch, and the ball vibration switch outputs a high-level vibration signal when not triggered and outputs a low-level vibration signal when triggered; the acceleration sensor is an MMA8452, and the MMA8452 configures the following peripheral circuits: pin 1 is connected with an internal power supply and grounded through a capacitor C1, pin 2 is grounded through a capacitor C2, pin 4 is connected with the internal power supply and connected with a serial clock interface of a master control module through a resistor R1, pin 6 is connected with the internal power supply and connected with a serial data interface of the master control module through a resistor R2, pin 7 is grounded, pin 9 is connected with an inertial interrupt I, pin 11 is connected with an inertial interrupt II, pin 14 is connected with an external power supply and grounded through a capacitor C3, pin 5, pin 10 and pin 12 are grounded, and pin 3, pin 8, pin 13, pin 15 and pin 16 are vacant.
Further, the sensor group comprises a temperature sensor and/or a humidity sensor, and is used for detecting temperature data and/or humidity data in the vehicle, so that the main controller outputs a temperature data adjusting instruction and/or a humidity adjusting instruction in the vehicle according to the temperature data and/or humidity data in the vehicle and a preset environment strategy in the vehicle.
Furthermore, the main controller is an RK3399 industrial control board, and the RK3399 industrial control board is connected with the main board of the sensor group through an RS232/RS485 interface; and/or the RK3399 industrial control board is connected with the camera group through a USB interface.
Further, the communication module is a wireless communication module, and the wireless communication module performs data transmission and interaction between the master controller and the cloud server through a wireless communication link.
Compared with the prior art, the utility model discloses long-range video guard of car sets up the camera group and records the video, and the master controller can be processed real-time video file for taking time mark's little video file, can reduce invalid data from this and upload, improves query efficiency. Particularly, the sensor group is further arranged to detect collision and scratch accidents and send corresponding messages, so that small video files can be conveniently marked and screened, the data volume reported when the vehicle has an accident is greatly reduced, and related personnel can be informed to process the small video files in time.
Drawings
Fig. 1 is a schematic diagram of an automobile remote video guarding device according to an embodiment of the present invention;
FIG. 2 is a diagram of the arrangement of the camera group of FIG. 1;
FIG. 3 is a diagram of a sensor group configuration of FIG. 1;
FIG. 4 is a circuit diagram of an acceleration detector of FIG. 3;
fig. 5 is a schematic diagram of a circuit board of the master controller in fig. 1.
Detailed Description
The utility model discloses car remote video guard's basic idea is: simultaneously recording videos of a plurality of visual angles (such as four visual angles of the front, the back, the left and the right of the automobile) of the automobile through a USB camera, storing a section of small video to the local according to a set time period (such as every minute), and adding a time mark (such as a date and time caption); and reporting the video data in the previous period and the current period when the accident occurs.
Generally, relevant modules of the automobile remote video guarding device can be integrated on a plurality of circuit boards, and can be made into independent products after being additionally provided with a shell, and the independent products can be installed at proper positions (such as the bottom of a front cab cabin and the like) according to the internal structure of an automobile.
The utility model discloses an in the preferred embodiment, adopt RK3399 industrial control board as on-vehicle master controller circuit board (hereinafter for short master control board) on the hardware, use a plurality of USB cameras that support the UVC agreement as video acquisition equipment, dispose sensor mainboard (above installation shock transducer, acceleration sensor etc.) and be used for monitoring vehicle accident, the master control board passes through USB interface connection with the acquisition camera, the master control board passes through RS232 RS485 interface connection with the sensor mainboard.
Thus, the utility model discloses can gather a plurality of USB camera video data simultaneously, press and preserve a video file by time period to add marks such as date time subtitle, whether the while is through serial ports protocol monitoring vehicle occurence of failure (like scraping and collision etc.). Therefore, the purposes of reducing invalid data uploading and improving query efficiency are achieved.
The structure, the working principle and the working process of the remote video guarding device for the automobile according to the embodiment of the invention are further described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in many different ways than those described herein, and those skilled in the art will be able to do so without departing from the spirit of the invention, and therefore the invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1, a schematic diagram of a remote video guarding device for an automobile according to an embodiment of the present invention is shown. The automobile remote video guarding device is loaded on an automobile and comprises a camera group 100, a sensor group 200, a master controller 300, a communication module 400 and the like, wherein the camera group 100, the sensor group 200 and the communication module 400 are respectively connected with the master controller 300, the camera group 100 is used for recording a video file in real time, the sensor group 200 is used for detecting and outputting detection parameters in real time, the master controller 300 is used for processing the video file into a small video file with time marks (such as adding date and time subtitles) and processing the detection parameters according to a preset strategy to identify and output automobile accident messages, the communication module 400 is used for uploading the small video file and the automobile accident messages to a cloud server, and the uploaded small video file and the automobile accident messages can be further forwarded to users (such as owners, family members, traffic police command centers, insurance companies and the like) by the cloud server for subsequent processing, queries may also be made by the user through a website, APP applet, or the like.
In this embodiment, the master controller 300 processes the video file recorded by the camera group 100 in real time into a small video file added with a tag such as a date and time caption, so that invalid data uploading can be reduced, and query efficiency can be improved. Particularly, the sensor group 200 and the main controller 300 can detect automobile accidents such as collision, scratch and the like by matching, and accordingly, corresponding accident messages are generated to mark and screen the small video files. When an accident occurs to the vehicle, the corresponding small video file and the accident message are uploaded to the cloud server by the communication module 400, so that the reported data volume can be greatly reduced, and the related personnel can be conveniently notified to process the accident message in time.
The following further describes the components of the remote video guarding device of the automobile according to the embodiment in detail with reference to the accompanying drawings.
Referring to fig. 2, a configuration diagram of the camera group in fig. 1 is shown. The camera group 100 is specifically provided with a front camera 101, a rear camera 102, a left camera 103 and a right camera 103, which are respectively used for recording video files in front of a vehicle, behind the vehicle, left of the vehicle and right of the vehicle, so that the vehicle condition can be tracked in real time in an all-around manner. Generally, the front camera 101, the rear camera 102, the left camera 103 and the right camera 104 all support the UVC protocol, and they respectively have USB interfaces to facilitate plug-and-play connection with the master controller 300. It can be understood that the number of cameras can be increased or other types of cameras can be selected according to the needs, and the description is omitted.
Referring to fig. 3, which shows a configuration diagram of the sensor group in fig. 1, the sensor group 200 mainly includes an acceleration sensor 201, a vibration sensor 202, a temperature/humidity sensor 203 and other sensors 204, which are respectively connected to a master controller 300 through RS232/RS485 interfaces, thereby implementing functions of accident detection, car environment adjustment, and the like. The functions of the sensors are specifically described below.
The acceleration sensor 201 may detect and output horizontal acceleration data and vertical acceleration data of the car in real time so that the main controller 200 recognizes a collision accident. The method specifically comprises the following steps: the main controller 200 receives and processes the acceleration horizontal acceleration data and the vertical acceleration data, and when the vertical acceleration data is smaller than a preset vertical acceleration threshold and the horizontal acceleration data is larger than a preset horizontal acceleration threshold, the main controller 300 judges that an automobile collision occurs and outputs a collision warning message.
The vibration sensor 202 can detect and output vibration signals of the automobile in real time, and the vibration sensor is matched with the acceleration sensor 201 to detect and output acceleration signals of the automobile in real time, so that scratch accidents can be identified by the main controller 300. The method specifically comprises the following steps: the main controller 300 receives and processes the vibration signal and the acceleration signal, and when the acceleration signal represents that the automobile is static and the vibration signal represents that the automobile vibrates, the main controller 300 judges that the parked automobile is scratched and outputs scratch warning information.
The temperature sensor and/or the humidity sensor 203 may detect in-vehicle temperature data and/or in-vehicle humidity data so that the main controller 300 controls to adjust the in-vehicle environment. The method specifically comprises the following steps: the main controller 300 outputs a temperature data adjusting instruction and/or an in-vehicle humidity adjusting instruction according to a preset in-vehicle environment strategy according to in-vehicle temperature data and/or in-vehicle humidity data, and drives equipment such as an in-vehicle air conditioner or a fan/humidifier to work so as to adjust the in-vehicle temperature/humidity, so that the comfort of the in-vehicle environment is kept.
The acceleration sensor 201 in this embodiment may be specifically an MMA8452, which has high detection efficiency and accuracy. Specifically, the data interface of the acceleration sensor 201 is connected to the data interface of the main controller 300, and can be used for detecting and outputting acceleration data of three axes of the vehicle in real time, wherein the acceleration data includes horizontal acceleration data Ax, Ay and vertical acceleration data Az, and whether the vehicle is in a stationary state can be determined according to whether the acceleration data (mainly a horizontal acceleration change value) is 0. Thus, the collision with a larger force range can be detected quickly and accurately, and the occurrence of misjudgment or misjudgment collision is effectively avoided. The connection circuitry for the MMA8452 is described in further detail below.
Referring to fig. 4, a circuit diagram of an acceleration detector of fig. 3 is shown. The peripheral circuit and pin connection mode of the MMA8452 are as follows: pin 1(VDDIO) is connected with an internal power supply (1.62-3.6V) and is grounded through a capacitor C1(0.1 muF), pin 2(BYP, bypass capacitor) is grounded through a capacitor C2(0.1 muF), pin 3(NC) is suspended to be disconnected, and pin 4(SCL, I) is disconnected2C serial clock) is connected to the internal power supply and the master serial clock interface through a resistor R1(4.7K omega), a pin 5(GND) is grounded, and a pin 6(SDA, I)2C serial data) is connected with an internal power supply and a serial data interface of a master controller through a resistor R2(4.7K omega), and pin 7(SA0, I)2C address input least significant bit) is connected to the address input, pin 8(NC) is internally unconnected, pin 9(INT1) is connected to the first inertia interrupt, pin 10(GND) is connected to ground, pin 11(INT2) is connected to the second inertia interrupt, pin 12(GND) is connected to ground, pin 13(NC) is internally unconnected, pin 14(VDD) is connected to an external power supply (1.95-3.6V) and is grounded via a capacitor C3(4.7 μ F), pin 15(NC) is internally unconnected, and pin 16(NC) is internally unconnected. After the connection, the MMA8452 can efficiently and accurately measure the acceleration data of the automobile operation, which is beneficial to further operation of the subsequent main controller 300 and judgment of whether collision or scratch occurs.
The vibration sensor 202 in this embodiment is a ball vibration switch (the structure and principle of the ball vibration switch are well known to those skilled in the art and will not be described herein), which outputs a high-level vibration signal when it is not triggered and outputs a low-level vibration signal when it is triggered. The output end of the vibration sensor 202 is connected with the interrupt interface of the master controller 300, and transmits a vibration signal to the master controller (such as an industrial personal computer) 300 for processing. When the automobile is static and scratch occurs, the vibration sensor is triggered, and when the pins with the interrupt receiving function of the main controller 200 receive signals, the information that the automobile is scratched is sent.
In order to prevent misjudgment or missing disc scratching, the present embodiment may identify a scratching accident by combining the detection signals of the acceleration sensor 201 and the vibration sensor 202, that is, perform comprehensive judgment by combining the acceleration signal detected by the acceleration sensor 201 and the vibration signal detected by the vibration sensor 202 at the same time, so as to achieve the purpose of correctly identifying scratching. Specifically, the main controller 300 receives and processes the vibration signal and the acceleration signal, and when the acceleration signal represents that the automobile is static (the change of the acceleration signal is about 0) and the vibration signal represents that the automobile vibrates (the vibration signal is at a low level), the main controller 200 judges that the automobile scratch occurs and outputs a scratch warning message. Therefore, whether scratch occurs or not can be detected quickly and accurately, the detection blind area is eliminated, and the person is not required to watch.
Referring to fig. 5, a schematic diagram of a circuit board of one of the masters of fig. 1 is shown. The main controller 300 adopts an RK3399 industrial control board, a RK3399 chip 301 is configured on a mainboard, a plurality of interfaces are configured at the same time, and the main controller specifically comprises a USB interface 302, an RS232/RS485 interface 303 and other types of interfaces 304 (such as a power supply interface, an HDMI interface, a debugging serial port, a PCIE interface, an expansion interface and the like), wherein the RK3399 industrial control board is connected with the mainboard of a camera through the USB interface 302, and is connected with the mainboard of a sensor through the RS232/RS485 interface, so that the hardware connection of main components is very conveniently realized.
The communication module 400 is generally a wireless communication module, and may preferably be a high-efficiency 4G module or 5G module, and may be configured independently or may directly use a module already mounted on the master 100. The communication module 400 performs data transmission and interaction between the master controller 200 and the cloud server through a wireless communication link, and includes uploading a small video file, an automobile accident message and the like to the cloud server, and then forwarding the small video file, the automobile accident message and the like to a user (an owner and a family member, a traffic police command center, a medical assistance center, an insurance company and the like) through the cloud server, so that the user can effectively track the automobile in real time, and can timely process the accident.
The automobile remote video guarding device in the above embodiment is connected with the RS3399 main control board and the camera through the USB interface, and is used for acquiring video data; the RS3399 main control board and the sensor main board are connected through an RS232/RS485 interface and used for monitoring vehicle scraping or collision accidents. The basic working process of the automobile remote video guarding device is as follows: firstly, initializing a camera and a sensor mainboard; then starting to record the video; then, monitoring a sensor mainboard event; when an accident is monitored, video data is labeled and reported to a server; and finally, the related users are notified through the 4G module, and the users are supported to check real-time videos on line or log in a cloud server for query. Therefore, by uploading the small videos related to the accident, the aims of reducing invalid data uploading and improving the query efficiency are achieved.
It should be noted that the above-mentioned remote video guarding device of the automobile relates to a control strategy. It will be appreciated by those skilled in the art that different control strategies may be employed, and that the control strategy relating to a particular algorithm is not the point of innovation of the present invention, and will not be described further herein.
The following is a detailed description of a specific control strategy (the user can adjust relevant parameters accordingly when using the control strategy).
(1) The video segment marking and processing method comprises the following steps: storing the recorded videos according to 1 video per minute by using a system clock; the video file name consists of date + time. The oldest video is deleted cyclically when the storage capacity exceeds 80% of the total available space.
(2) Video uploading strategy: after receiving the sensor accident notification, collecting videos to be reported according to the current time point, wherein the videos of the previous minute and the current minute are uploaded when the current second is less than 15; uploading the video for the current minute when the current number of seconds is >15 and < 50; and uploading the video of the current minute and the next minute when the current second is 50.
(3) A sleep strategy: when the automobile engine is flamed out and the electric quantity of the system is lower than 10%, the system is in a sleep mode, and power consumption modules such as a camera and a fan are turned off; the system automatically wakes up when the engine ignition is started or the system power is above 20%. And starting the system after receiving the sensor accident notification in the sleep mode, correspondingly uploading corresponding data, and performing the sleep mode again after the corresponding data is processed.
(4) The alarm scheme is as follows: after receiving the sensor accident notification, the position and the accident information are preferentially reported to the server, the server pushes and notifies related personnel through short messages, App and the like, and a user can check details through links of the App messages, the short messages and the like. After the push is successful, the relevant videos are uploaded in a segmented mode, and after the uploading is finished, the user can check the videos through the App message or the short message link.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a long-range video guard device of car which characterized in that, is including loading camera group, master controller and the communication module on the car, and this camera group, master controller and communication module connect gradually, and wherein camera group is used for recording video file in real time, and the master controller can be used to process video file into the little video file of taking the time mark, and communication module can be used to upload little video file to cloud ware.
2. The automotive remote video guarding apparatus according to claim 1, wherein the camera group includes a front camera, a rear camera, a left camera, and a right camera supporting the UVC protocol, respectively, and the front camera, the rear camera, the left camera, and the right camera are used for recording video files of the front of the vehicle, the rear of the vehicle, the left of the vehicle, and the right of the vehicle, respectively.
3. The remote video guarding device for automobiles according to claim 1, wherein a sensor group is provided, which is connected with the master controller for detecting and outputting the detection parameters in real time, so that the master controller processes the detection parameters according to a preset strategy to identify and output the automobile accident message, and uploads the automobile to the cloud server via the communication module.
4. The remote video guarding device for automobile according to claim 3, wherein the sensor group comprises an acceleration sensor connected with the main controller for detecting and outputting the horizontal acceleration data and the vertical acceleration data of the automobile in real time, so that the main controller receives and processes the horizontal acceleration data and the vertical acceleration data, and when the vertical acceleration data is smaller than the preset vertical acceleration threshold value and the horizontal acceleration data is larger than the preset horizontal acceleration threshold value, the main controller judges that the automobile is collided and outputs a collision warning message.
5. The automobile remote video guarding apparatus according to claim 4, wherein the acceleration sensor is an MMA8452, the MMA8452 being provided with the following peripheral circuits: pin 1 is connected with an internal power supply and grounded through a capacitor C1, pin 2 is grounded through a capacitor C2, pin 4 is connected with the internal power supply and connected with a serial clock interface of a master control module through a resistor R1, pin 6 is connected with the internal power supply and connected with a serial data interface of the master control module through a resistor R2, pin 7 is grounded, pin 9 is connected with an inertial interrupt I, pin 11 is connected with an inertial interrupt II, pin 14 is connected with an external power supply and grounded through a capacitor C3, pin 5, pin 10 and pin 12 are grounded, and pin 3, pin 8, pin 13, pin 15 and pin 16 are vacant.
6. The automobile remote video guarding device according to claim 3, characterized in that the sensor group comprises a vibration sensor and an acceleration sensor, the vibration sensor and the acceleration sensor are respectively connected with the main controller, the vibration sensor is used for detecting and outputting vibration signals of an automobile in real time, the acceleration sensor is used for detecting and outputting acceleration signals of the automobile in real time, so that the main controller receives and processes the vibration signals and the acceleration signals, and when the acceleration signals represent that the automobile is static and the vibration signals represent that the automobile vibrates, the main controller judges that the automobile in parking is scratched and outputs scratch warning messages.
7. The automotive remote video guarding apparatus according to claim 6, wherein the shock sensor is a ball shock switch that outputs a high level shock signal when not activated and a low level shock signal when activated; the acceleration sensor is an MMA8452, and the MMA8452 configures the following peripheral circuits: pin 1 is connected with an internal power supply and grounded through a capacitor C1, pin 2 is grounded through a capacitor C2, pin 4 is connected with the internal power supply and connected with a serial clock interface of a master control module through a resistor R1, pin 6 is connected with the internal power supply and connected with a serial data interface of the master control module through a resistor R2, pin 7 is grounded, pin 9 is connected with an inertial interrupt I, pin 11 is connected with an inertial interrupt II, pin 14 is connected with an external power supply and grounded through a capacitor C3, pin 5, pin 10 and pin 12 are grounded, and pin 3, pin 8, pin 13, pin 15 and pin 16 are vacant.
8. The automobile remote video guarding device according to claim 3, wherein the sensor group comprises a temperature sensor and/or a humidity sensor for detecting the temperature data and/or the humidity data in the automobile, so that the main controller outputs the temperature data adjusting instruction and/or the humidity adjusting instruction according to the preset environmental policy in the automobile according to the temperature data and/or the humidity data in the automobile.
9. The automobile remote video guarding device according to claim 3, wherein the master controller is an RK3399 industrial control board, and the RK3399 industrial control board is connected with the main board of the sensor group through an RS232/RS485 interface; and/or the RK3399 industrial control board is connected with the camera group through a USB interface.
10. The automobile remote video guarding device according to any one of claims 1 to 9, wherein the communication module is a wireless communication module, and the wireless communication module performs data transmission and interaction between the master controller and the cloud server through a wireless communication link.
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| CN202121053344.0U CN215068373U (en) | 2021-05-17 | 2021-05-17 | Automobile remote video guarding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114333198A (en) * | 2022-01-14 | 2022-04-12 | 深圳市顺安居智能科技有限公司 | New generation industrial grade electron tension rail based on industry intelligence |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114333198A (en) * | 2022-01-14 | 2022-04-12 | 深圳市顺安居智能科技有限公司 | New generation industrial grade electron tension rail based on industry intelligence |
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