KR101953566B1 - Method and apparatus for controlling vehicular alram - Google Patents

Abstract

A vehicle interior intrusion detection apparatus includes a plurality of ultrasonic detection modules mounted at different positions in a vehicle, a control module for controlling the plurality of ultrasonic detection modules, and a vehicle communication network for connecting at least one of the plurality of ultrasonic detection modules to the control module. .

Description

Technical Field [0001] The present invention relates to a method and an apparatus for detecting intrusion of a vehicle interior,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a method and apparatus for detecting an intrusion of a vehicle interior, and more particularly, to a method and apparatus for detecting intrusion of a vehicle interior.

Today's vehicle anti-theft systems require performance and specifications to maintain the safety of the vehicle from the inside and outside situations of the vehicle being parked. Accordingly, a recent vehicle theft prevention system can provide a visual or auditory effect around the vehicle in the event of various situations such as detection of window breakage for intrusion, detection of theft of goods in a vehicle, detection of tire theft of a car being parked, illegal traction of a vehicle, Thereby maintaining the safety of the vehicle.

A general vehicle intrusion detection device is provided to install an ultrasonic sensor at a predetermined position in a room and to detect whether or not the vehicle intrudes according to the presence or absence of an electric signal supplied through an installed ultrasonic sensor. Ultrasound has the disadvantage that it is difficult to detect a small object because it becomes refracted when it is encountered with a small object and it becomes difficult to reflect. In addition, when ultrasonic waves are used, it is difficult to detect an object having an oblique side because the reflection by the object becomes a right angle. When the ultrasonic sensor is installed in a car interior according to the straightness of the ultrasonic wave, the intrusion detection area of the vehicle can be limited.

When a plurality of ultrasonic sensors are installed to widen the detection area of the indoor intrusion, shadow areas may occur due to mutual ultrasonic interference. In addition, the ultrasonic sensor has a characteristic in which the sensitivity of sensing changes with respect to temperature changes in the air and the surface area of the object to be sensed, such as a sensor having a large surface area and a sensor having a small surface area such as a thin rod, The reliability may be lowered.

It is very difficult to detect all the indoor spaces with only one ultrasonic intrusion protection (UIP) if the vehicle has a large space such as a bus. Accordingly, it is necessary to provide at least two or more ultrasonic sensor modules, which may cause reliability problems as described above.

KR 10-2012-0016881 A

The present invention relates to a vehicle interior intrusion detection method and apparatus capable of preventing waveforms from being superimposed on each other by controlling on / off timing of each module when a plurality of ultrasonic intrusion protection (UIP) .

In addition, the present invention provides a vehicle interior intrusion detection system that can unify the hardware and software of a plurality of ultrasonic sensor modules (ultrasonic intrusion protection, UIP) installed in a vehicle to expand the indoor intrusion detection area, Methods, and apparatus.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

An intrusion detection device for a vehicle according to an embodiment of the present invention includes a plurality of ultrasonic detection modules mounted at different positions in a vehicle; A control module for controlling the plurality of ultrasonic detection modules; And a vehicle communication network for connecting at least one of the plurality of ultrasonic detecting modules to the control module.

In addition, the vehicular communication network may include a Local Interconnect Network (LIN).

The plurality of ultrasound sensing modules may monitor different spaces in the vehicle, and may alternatively or sequentially operate by the control module.

The plurality of ultrasonic sensing modules may include a first ultrasonic module and a second ultrasonic module, the first ultrasonic module may be connected to the control module through the local interconnection network (LIN), and the second ultrasonic module May be connected to the first ultrasonic module through the local interconnect network (LIN).

The plurality of ultrasonic sensing modules may include a first ultrasonic module and a second ultrasonic module, the first ultrasonic module may be connected to the control module through the local interconnection network (LIN), and the second ultrasonic module May be connected to the first ultrasonic module through a Universal Asynchronous Receiver & Transmitter (UART) scheme.

The first ultrasonic module may include a local interline network (LIN) transceiver for transmitting the input / output of the second ultrasonic module to the control module.

In addition, the message according to the universal asynchronous transmission / reception (UART) scheme includes one start bit; A predetermined number of data bits from 5 to 8; And at least one Stop (STOP) bit.

In addition, the message according to the universal asynchronous transmission / reception (UART) scheme may further include one parity bit.

The plurality of ultrasonic sensors may include a first ultrasonic module and a second ultrasonic module. The first ultrasonic module and the second ultrasonic module may be connected to the control module through the local interconnection network (LIN) And the second ultrasonic module and the first ultrasonic module are connected to each other through a general-purpose input / output (GPIO) of a low-power type so that a master / slave relationship can be established.

In addition, the first ultrasonic module and the second ultrasonic module may include the same components.

The general purpose input / output terminal (GPIO) is composed of three terminals: a master output, a slave input and a slave selection. A master / slave relationship is determined through slave selection terminals of the first and second ultrasonic modules , The master output terminal of the master module can be connected to the slave input terminal of the slave module.

The ultrasound sensing module may include at least one output module for outputting ultrasound signals; A receiving module for receiving a response corresponding to the ultrasonic signal; A control unit for controlling the at least one output module and the receiving module; And a communication unit for performing communication according to the local inter-network (LIN) between the control unit and the control module.

The output module may further include: a generator for generating a control signal in response to an instruction from the controller; An amplifier for amplifying the output of the generator; And a transmitter for outputting the output of the amplification unit as the ultrasonic signal.

The receiving module may further comprise: a receiver for receiving the response; An amplifier for amplifying the output of the receiver; And a converter for converting an output of the amplifier into a digital signal.

In addition, the message according to the local interconnect network (LIN) includes a message header area and a message response area, the message header area includes a break field for notifying the start of a frame; A Sync field used in the slave node; And an identifier field including an identifier assigned to the ultrasonic wave sensing module.

Further, the break field includes 13 dominant bits and one nominal, and the identifier field may include a 6-bit message identifier field (ID) and a 2-bit parity field.

The plurality of ultrasound sensing modules may include at least one master module and at least one slave module, and the master module and the slave module may be connected to the control module in a serial or parallel manner.

Further, the ultrasonic sensor module may include an ultrasonic sensor capable of recognizing the movement of the object in the vehicle and the breakage of the windshield. And an inclination sensor capable of recognizing the tilting of the vehicle.

The intruder detection device may further include an alarm module for outputting audible and visual alarms according to an instruction of the control module that analyzes the outputs of the plurality of ultrasonic detection modules.

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, but, on the contrary, And can be understood and understood.

The effect of the device according to the present invention will be described as follows.

The present invention can precisely control ON / OFF timing (TIMING) between a plurality of ultrasonic intrusion protection (UIP) mounted in a vehicle, PCB, CONNECTOR, S / W), etc., can be expected to reduce production costs.

Further, the present invention can simplify the process of controlling a plurality of ultrasonic sensor modules mounted in a vehicle, thereby reducing a consumed current and reducing a dark current (dark) using a general-purpose input / output (GPIO) current can be suppressed.

The effects obtainable by the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. It is to be understood, however, that the technical features of the present invention are not limited to the specific drawings, and the features disclosed in the drawings may be combined with each other to constitute a new embodiment.
1 illustrates an example in which a vehicle interior intrusion detection apparatus is installed in a vehicle having a large indoor space such as a bus.
FIG. 2 illustrates a vehicle interior intrusion detection apparatus including a plurality of ultrasonic detection modules.
3 illustrates the operation of a plurality of ultrasonic detection modules included in the intrusion detection device for a vehicle.
4 illustrates a communication network for a vehicle.
5 illustrates a first embodiment of an intrusion detection apparatus for a vehicle.
Fig. 6 illustrates a second embodiment of an intrusion detection apparatus for a vehicle.
Fig. 7 illustrates a third embodiment of the vehicle intrusion detection device.
8 illustrates the ultrasonic wave sensing module.
9 illustrates a low-power general-purpose input / output (GPIO) terminal in the ultrasonic sensing module.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and various methods to which embodiments of the present invention are applied will be described in detail with reference to the drawings. The suffix " module " and " part " for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

In the description of the embodiments, when it is described as being formed on the "upper" or "lower" of each element, the upper or lower (lower) And that at least one further component is formed and arranged between the two components. Also, the expression "upward" or "downward" may include not only an upward direction but also a downward direction on the basis of one component.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

1 illustrates an example in which a vehicle interior intrusion detection apparatus is installed in a vehicle having a large indoor space such as a bus.

As shown, a plurality of ultrasonic detection modules 12a and 12b can be mounted on a vehicle having a large indoor space (e.g., a bus). The ultrasonic wave detection modules 12a and 12b can detect changes in a predetermined space by transmitting and receiving ultrasound, which is a sound wave having a frequency exceeding 16 Hz to 20 kHz, which is a frequency band of a human dominant number of people, of 20 kHz or more.

Generally, a sound wave having a frequency range of 20 kHz to 1 GHz is referred to as an ultrasonic wave, and a sound wave having a frequency range of 1 GHz to 1000 GHz is referred to as a hypersonic wave. Ultrasonic waves are reflected and transmitted at the interface because they have high directivity, high linearity, constant propagation velocity, various permeation media, reflection, refraction and diffraction at the interface between liquid and solid. . Due to the nature of such an ultrasonic wave, it is easy to detect the change when an object enters the interior of the vehicle. The higher the frequency, the smaller the dispersion angle of the ultrasound beam. The larger the diameter, the smaller the dispersion angle of the sound beam at the same frequency. The lower the frequency, the higher the permeability and propagation distance.

Since the sensing range of the ultrasonic sensing modules 12a and 12b using ultrasound is limited, it is very difficult to monitor the indoor space with a single module in a vehicle having a large indoor space such as a bus. It may be designed to include a plurality of transmitters and a receiver capable of transmitting ultrasonic waves to different areas to extend the detection range of the ultrasonic detection module. However, even if one ultrasonic detection module including a plurality of transmitters is installed in a vehicle having a wide indoor space, if it is not possible to detect all indoor spaces, a plurality of ultrasonic detection modules 12a and 12b can be mounted on the vehicle have.

FIG. 2 illustrates a vehicle interior intrusion detection apparatus including a plurality of ultrasonic detection modules.

As shown in the figure, the vehicle includes an indoor intrusion detection unit 12 including a plurality of ultrasonic detection modules 12a and 12b, a vehicle receiving information from the indoor intrusion detection unit 12 connected through the in- And a warning unit 18 for transmitting an alarm according to the intrusion or danger if it is detected by the control unit 16 and the vehicle control unit 16. Here, the vehicle control unit 16 is the same as the computing device mounted in the vehicle, and based on the data transmitted from the intrusion detection unit 12, the vehicle control unit 16 detects a vehicle such as an object intruding into the vehicle, I can judge my change. In addition, the warning unit 18 can transmit audible and visual warning (e.g., alarm sound, warning flashing, etc.) to people around the vehicle according to an instruction or command transmitted from the vehicle control unit 16. [

When at least two ultrasonic detection modules 12a and 12b included in the intrusion detection device for a vehicle are installed in the vehicle, a time point at which each module is turned on / off (ON / OFF) by the vehicle control unit 16, A configuration of a vehicle communication system for transmitting and receiving information is required. In general, a controller area network (CAN) may be used to connect the vehicle controller 16 and the plurality of ultrasonic sensors 12a and 12b. The Controller Area Network (CAN) allows the vehicle controller 16 to use a single CAN interface rather than having analog and digital inputs for each module or device in the system. Therefore, each module or device on the network should include a controller chip to support the controller area network. This approach has the disadvantage of requiring a high-end computing device or vehicle controller (MCU). In addition, it is difficult to control the timing (TIMING) of accurately turning on / off (ON / OFF) in the in-vehicle intrusion detection device in which a plurality of ultrasonic detection modules 12a and 12b are repeatedly turned on / off .

When the plurality of ultrasonic wave detection modules 12a and 12b are mounted on a vehicle, the vehicle accurately controls the ON / OFF timing of each module so that waveforms of the ultrasonic waves transmitted and received by the respective modules are received There is a need to prevent that. In addition, when the configurations of the plurality of ultrasonic detection modules 12a and 12b are unified, the production cost or management cost of the intrusion detection device for a vehicle can be reduced. However, according to the method of connecting the plurality of ultrasonic detection modules 12a and 12b to the vehicle control unit 16 and the method of connecting the plurality of ultrasonic detection modules 12a and 12b to the respective ultrasonic detection modules 12a and 12b ) May vary.

3 illustrates the operation of a plurality of ultrasonic detection modules included in the intrusion detection device for a vehicle.

As shown in the figure, the intrusion detection device for a vehicle including a plurality of ultrasonic detection modules needs to alternately or sequentially operate in order to prevent the generation of a false sense due to the superimposition of ultrasonic waves.

An example of a vehicle equipped with two ultrasonic sensing modules is described below. It is assumed that the first ultrasonic detection module UIP1, which is one of the two ultrasonic detection modules, operates in a master mode and the second ultrasonic detection module UIP2, which is another one, operates in a slave mode SLAVE . The transmitter TX included in the second ultrasonic detection module UIP2 does not output ultrasonic waves during a period in which the transmitter TX included in the first ultrasonic detection module UIP1 outputs ultrasonic waves. On the other hand, the transmitter TX included in the first ultrasonic detection module UIP1 does not output ultrasonic waves during the period of ON when the transmitter TX included in the second ultrasonic detection module UIP2 outputs the ultrasonic waves. .

When the transmitter TX included in the first ultrasonic detection module UIP1 transmits the ultrasonic wave and is reflected by the object inside the vehicle and received, the first ultrasonic detection module UIP1 can output the received result. At this time, the output time point of the first ultrasonic detection module UIP1 may be the same as the time point at which the transmitter TX of the first ultrasonic detection module UIP1 does not transmit ultrasonic waves.

When the vehicle includes a plurality of ultrasonic detection modules 12a and 12b and a plurality of ultrasonic transmitters exist in the respective ultrasonic wave detection modules, the transmitters included in the ultrasonic wave detection modules 12a and 12b are turned on / It is complicated and difficult to precisely control the point of time.

2 and 3, the plurality of ultrasound sensing modules 12a and 12b may be connected to the vehicle controller 16 through the in-vehicle communication network 10. At least one of the plurality of ultrasonic detection modules 12a and 12b and the vehicle control section 16 are connected to a local interconnection network (not shown) included in the vehicular communication network in order to smoothly control the operation of the plurality of ultrasonic detection modules 12a and 12b Local Interconnect Network, LIN).

4 illustrates a communication network for a vehicle. Specifically, (a) illustrates a frame structure according to a Universal Asynchronous Receiver Transmitter (UART) scheme, (b) illustrates a frame structure used in a Controller Area Network (CAN) , and (c) illustrate a frame structure used in a local interconnection network (LIN).

Referring to FIG. 4A, a message according to the universal asynchronous transmission / reception (UART) scheme includes a start bit, a predetermined number of data bits of 5 to 8, (STOP) bits. In addition, the message according to the universal asynchronous transmission / reception (UART) scheme may further include one parity bit. A message according to the general-purpose asynchronous transmission / reception (UART) scheme is synchronized with a start bit, a character bit, and a stop bit without transmitting or receiving a separate sync character (Sync) for synchronization. Since the general-purpose asynchronous transmit / receive (UART) scheme has a full duplex configuration in which the transmission and reception lines are separately provided and does not use a separate clock line, the baud rate ). Here, Baud Rate is a measure of how many symbols per second (symbolic data bundle) can be transmitted, which can be the number of signal elements per second in a theoretical communication unit.

Referring to FIG. 4B, a message according to a controller area network (CAN) method identifies a start-of-frame (SOF) bit having a logical value '0' An arbitration ID bit for specifying a priority, a remote transmission request (RTR) bit for distinguishing between a remote frame and a data frame, a data length code (data (DLC) bit, a DATA field that can be composed of 0 to 8 bytes, a cyclic redundancy check (CRC) field for error detection using a 15-bit periodic redundancy check code, And an end-of-frame (EOF) bit indicating the end of the message. In addition, an extension message according to the Controller Area Network (CAN) scheme is a substitute for a placeholder of an extended format in place of a remote transmission request (RTR) bit at a standard message location. An Extension Identifier Extension (IDE) bit to indicate that there is an identifier extension, an 18 bit extended Arbitration ID bit to indicate that there is an extension extension, Reserved bits (r0, r1). Here, the controller area network (CAN) scheme can be regarded as a peer-to-peer network. In other words, there is no separate module or device in the master role that controls when individual nodes access to read or write data on the CAN bus. For example, when the CAN node is ready to send data, it checks whether the bus is ready and then creates a CAN frame on the network. The transmitted CAN message (frame) does not contain the address of either the transmitting node or the receiving node, but instead a unique arbitration ID classifies the message (frame) in the network. All nodes on the CAN network can receive CAN frames, and each CAN node on the network decides whether to accept frames according to the arbitration ID of the frame to be transmitted, so that communication between nodes, modules, or devices is performed.

Referring to FIG. 4C, a message according to the local interconnection network LIN may include a message header area and a message response area. The message header area may include an identifier field including a Break field indicating the start of the frame, a Sync field used in the slave node, and an identifier assigned to the ultrasonic detection module. Here, the break field may include thirteen dominant bits and one nominal bit, and may serve to inform all nodes connected to the bus by the beginning of the frame. In addition, the identifier field may include a 6-bit message identifier field (ID) and a 2-bit parity field. The Local Interconnect Network (LIN) scheme is a communication scheme (Half-duplex) in which data is exchanged through a transceiver connected to one line without distinguishing between a transmission line and a reception line. Meanwhile, the relationship between a master and a slave is set in two modules or devices connected through a local interconnect network (LIN), and a device set as a master is allowed to start communication in serial communication And a device set as a slave can not perform communication until a device set as a master requests communication. Of course, a plurality of slave modules or devices may be connected to one master device or module.

5 illustrates a first embodiment of an intrusion detection apparatus for a vehicle.

As shown in the figure, the first embodiment of the intrusion detection apparatus for a vehicle may include a plurality of ultrasonic detection modules 12a and 12b and a vehicle control unit 16. Specifically, the plurality of ultrasound sensing modules may include a first ultrasound module 12a and a second ultrasound module 12b. The first ultrasonic module 12a is connected to the vehicle control unit 16 through a local interconnection network LIN 10a and the second ultrasonic module 12b is connected to the first ultrasonic module 12a and the local inter- (LIN, 10a).

In the local interconnection network LIN 10a connecting the first ultrasonic module 12a and the vehicle controller 16, the vehicle controller 16 is a master device and the first ultrasonic module 12a is a slave device. In the local interconnection network LIN 10a connecting the second ultrasonic module 12b and the first ultrasonic module 12a, the first ultrasonic module 12a serves as a master device and the second ultrasonic module 12b serves as a slave. Device.

The first ultrasonic module 12a includes two local interline network (LIN) transceivers and receives a control signal for the second ultrasonic module 12b from the vehicle controller 16 and receives signals from the second ultrasonic module 12b, To the vehicle control unit 16, the intrusion information data transmitted from the vehicle control unit 16.

In the case of the first embodiment, the first ultrasonic module 12a has a more complicated configuration than the second ultrasonic module 12b, thereby increasing the manufacturing cost of the intrusion detection device for the vehicle interior. In addition, the operation load can be increased in the vehicle control unit 16 as a complicated structure in which the vehicle control unit 16 needs to control the second ultrasonic module 12b through the first ultrasonic module 12a.

Fig. 6 illustrates a second embodiment of an intrusion detection apparatus for a vehicle.

As shown in the figure, it is assumed that the second embodiment includes a plurality of ultrasonic detection modules 12a and 12b and a vehicle control unit 16 as in the first embodiment. Although the first ultrasonic module 12a is connected to the vehicle controller 16 through the local interconnection network LIN 10a, the second ultrasonic module 12b is connected to the first ultrasonic module 12a and the general- (Universal Asynchronous Receiver & Transmitter (UART), 10b).

In the local interconnection network LIN 10a connecting the first ultrasonic module 12a and the vehicle controller 16, the vehicle controller 16 is a master device and the first ultrasonic module 12a is a slave device. In the universal asynchronous transmission / reception (UART) system 10b in which the second ultrasonic module 12b and the first ultrasonic module 12a are connected, the first ultrasonic module 12a is a master device and the second ultrasonic module 12b Slave device.

When the first embodiment (see FIG. 5) and the second embodiment (see FIG. 6) are compared, there is a difference in the connection method between the first ultrasonic module 12a and the second ultrasonic module 12b. However, in the case of a bus having a wide indoor space of the vehicle, the first ultrasonic module 12a and the second ultrasonic module 12b are separated from each other by 3 m or more, 10b), the voltage drop may cause the communication to become unstable. Since the communication speed is slow in the case of the universal asynchronous transmission / reception (UART, 10b), the first ultrasonic module 12a and the second ultrasonic module 12b, which take delay time into account, On / off point control can be very difficult. The universal asynchronous transmission / reception (UART, 10b) system that connects the first and second ultrasonic modules 12a and 12b uses a high speed 19,200bps communication speed considering the delay time, And may be vulnerable to electromagnetic compatibility (EMC).

Fig. 7 illustrates a third embodiment of the vehicle intrusion detection device.

As shown, the third embodiment includes a plurality of ultrasonic detection modules 12a and 12b and a vehicle control unit 16 as in the first embodiment (see FIG. 5) and the second embodiment (see FIG. 6) Can be assumed. The first ultrasonic module 12a and the second ultrasonic module 12b are connected to the vehicle control unit 16 through the local interconnection network LIN 10a and are connected to the second ultrasonic module 12b and the first ultrasonic module 12b, 12a are connected through a general-purpose input / output (GPIO) 10c of a low-power type so that a master / slave relationship can be established. At this time, the first ultrasonic module 12a and the second ultrasonic module 12b may include the same components.

Specifically, in the third embodiment, the first ultrasonic module 12a and the second ultrasonic module 12b are connected to the vehicle controller 16 via a line of a local interconnection network (LIN, 10a). Here, the vehicle control unit 16 is determined as a master device, and the first ultrasonic module 12a and the second ultrasonic module 12b are determined to be slave devices, so that data transmission and reception of vehicle information and intrusion information occur.

The first ultrasonic module 12a and the second ultrasonic module 12b are connected to each other through a general-purpose input / output terminal GPIO 10c of a low-power type. The on / off points of the first and second ultrasonic modules 12a and 12b can be controlled according to the logical value of the signal through the general-purpose input / output terminal GPIO 10c of the low-power type.

The general purpose input / output terminal (GPIO, 10c) is a general-purpose input / output terminal with increased flexibility for selectively using one connection terminal without input or output. General purpose input / output terminal (GPIO) And a slave selection terminal. Specifically, a master / slave relationship can be determined through a slave selection terminal of the first ultrasonic module 12a and the second ultrasonic module 12b, and a master output terminal of the master module can be connected to a slave input terminal of the slave module .

In the case of the third embodiment, the vehicle control unit 16 can flexibly control the operations of the first ultrasonic module 12a and the second ultrasonic module 12b. In addition, since the internal configurations of the first ultrasonic module 12a and the second ultrasonic module 12b are the same, manufacturing cost and management cost of the intrusion detection device for a vehicle interior can be reduced.

8 illustrates the ultrasonic wave sensing module.

As shown in the figure, the ultrasonic sensing module 12a includes at least one output module 40a and 40b for outputting ultrasonic signals, a receiving module 50 for receiving a response corresponding to the ultrasonic signal, at least one output module 40a A communication unit 52 for communicating with the local inter-connect network LIN between the control unit 46 and the vehicle control unit 16 (see FIG. 7), and a control unit 46 ).

The ultrasonic sensing module 12a includes a voltage adjusting unit 48 for receiving the power VCC and stably supplying operating power to the components in the module, and a master or slave setting via a low-power type general-purpose input / output terminal (GPIO) And may further include a setting unit 54 for determining whether or not the image is displayed. Here, the low-power type general-purpose input / output terminal GPIO may include a master output terminal MO, a slave input terminal SI, and a slave selection terminal / SS.

The ultrasonic detection module 12a can communicate with the vehicle controller 16 only with the six input / output terminals 56 including the ground terminal GND. In addition, when connected to the vehicle control unit 16 as in the third embodiment, the configuration of all the ultrasonic wave sensing modules mounted on the vehicle can be the same.

Specifically, the output modules 40a and 40b include generation sections 42a and 42b for generating control signals in response to an instruction from the control section 46, amplifiers 36a and 36b for amplifying the outputs of the generation sections 42a and 42b, 36b for outputting the outputs of the amplifying units 36a, 36b as ultrasonic signals, and transmitters 32a, 32b for outputting the outputs of the amplifying units 36a, 36b as ultrasonic signals.

The receiving module 50 also includes a receiver 34 for receiving a response corresponding to the output of the transmitters 32a and 32b, an amplifier 38 for amplifying the output of the receiver 34, To a digital signal. The output of the receiving module 50 (that is, the intrusion detection data) may be transmitted to the control unit 46 and then to the vehicle control unit 16 via the communication unit 52.

Although not shown, the ultrasonic sensor module 12a may include an ultrasonic sensor capable of recognizing object movements and broken glass windows in the vehicle, as well as an inclination sensor capable of recognizing the tilting of the vehicle for the purpose of tire damage or theft prevention .

9 illustrates a low-power general-purpose input / output (GPIO) terminal in the ultrasonic sensing module. Specifically, (a) illustrates the configuration of the master output terminal (MO; see FIG. 8), and (b) illustrates the configuration of the slave input terminal SI (see FIG. 8).

A method of connecting a plurality of ultrasonic sensing modules using a general-purpose input / output terminal (GPIO) is an interface that allows data to be exchanged in serial communication between two peripheral devices, one of which is a master and the other is a master A serial peripheral interface (SPI) method, which operates as a slave, may be similar to a serial peripheral interface (SPI) method. However, in general, a serial peripheral interface (SPI) ) Is used to define a master module and a slave module as a method of connecting a plurality of modules.

The method according to the above-described embodiments may be implemented as a program to be executed by a computer and stored in a computer-readable recording medium. Examples of the computer-readable recording medium include a ROM, a RAM, a CD- , A floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet).

The computer readable recording medium may be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. And, functional program, code, and code segments for implementing the above-described method can be easily inferred by programmers in the technical field to which the embodiment belongs.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

12a, 12b: a plurality of ultrasonic detection modules
12: intrusion detection unit 16: vehicle control unit
18: Warning part 10: In-vehicle communication network

Claims (19)

A plurality of ultrasonic detection modules mounted at different positions in the vehicle;
A control module for controlling the plurality of ultrasonic detection modules; And
And a vehicle communication network connecting at least one of the plurality of ultrasonic sensing modules to the control module, wherein the vehicle communication network includes a Local Interconnect Network (LIN)
The plurality of ultrasound sensing modules may include a first ultrasound module and a second ultrasound module,
Wherein the first ultrasonic module and the second ultrasonic module are connected to the control module through the local interconnection network (LIN)
The second ultrasonic module and the first ultrasonic module are connected via a general-purpose input / output (GPIO) of a low-power type to establish a master / slave relationship,
The general purpose input / output terminal (GPIO) comprises three terminals: a master output, a slave input, and a slave selection. A master / slave relationship is determined through a slave selection terminal of the first and second ultrasonic modules,
Wherein the plurality of ultrasound sensing modules include at least one master module and at least one slave module, and a master output terminal of the master module is connected to a slave input terminal of the slave module. delete The method according to claim 1,
Wherein the plurality of ultrasound sensing modules are capable of monitoring different spaces in the vehicle and are alternately or sequentially operated by the control module. The method according to claim 1,
The plurality of ultrasound sensing modules may include a first ultrasound module and a second ultrasound module,
Wherein the first ultrasonic module is connected to the control module via the local interconnection network (LIN)
Wherein the second ultrasonic module is connected to the first ultrasonic module via the local interconnection network (LIN). The method according to claim 1,
The plurality of ultrasound sensing modules may include a first ultrasound module and a second ultrasound module,
Wherein the first ultrasonic module is connected to the control module via the local interconnection network (LIN)
Wherein the second ultrasonic module is connected to the first ultrasonic module through a Universal Asynchronous Receiver & Transmitter (UART) method. The method according to claim 4 or 5,
Wherein the first ultrasonic module includes a local interline network (LIN) type transceiver for transmitting the input / output of the second ultrasonic module to the control module. 6. The method of claim 5,
The message according to the universal asynchronous transmission / reception (UART) scheme
One START bit;
A predetermined number of data bits from 5 to 8; And
At least one STOP bit
And the vehicle interior intrusion detection device. 8. The method of claim 7,
Wherein the message according to the universal asynchronous transmission / reception (UART) scheme further comprises one parity bit. delete The method according to claim 1,
Wherein the first ultrasonic module and the second ultrasonic module include the same components. delete The method according to claim 1,
The ultrasonic sensor module
At least one output module for outputting an ultrasonic signal;
A receiving module for receiving a response corresponding to the ultrasonic signal;
A control unit for controlling the at least one output module and the receiving module; And
And a communication unit for performing communication according to the local inter-network (LIN) between the control unit and the control module
And the vehicle interior intrusion detection device. 13. The method of claim 12,
The output module
A generator for generating a control signal in response to an instruction from the controller;
An amplifier for amplifying the output of the generator; And
A transmitter for outputting the output of the amplification unit as the ultrasonic signal;
And the vehicle interior intrusion detection device. 13. The method of claim 12,
The receiving module
A receiver for receiving the response;
An amplifier for amplifying the output of the receiver; And
A converting unit for converting an output of the amplifying unit into a digital signal;
And the vehicle interior intrusion detection device. The method according to claim 1,
Wherein the message according to the local inter-network (LIN) comprises a message header area and a message response area,
The message header area
A Break field indicating the start of the frame;
A Sync field used in the slave node; And
And an identifier field including an identifier assigned to the ultrasonic wave detection module. 16. The method of claim 15,
The break field includes thirteen dominant bits and one nominal bit,
Wherein the identifier field comprises a 6-bit message identifier field (ID) and a 2-bit parity field. The method according to claim 1,
Wherein the master module and the slave module are connected to the control module in one of a serial or parallel manner. The method according to claim 1,
The ultrasonic sensor module
An ultrasonic sensor capable of recognizing the movement of the object in the vehicle and the breakage of the windshield; And
An inclination angle sensor capable of recognizing the tilting of the vehicle
And the vehicle interior intrusion detection device. The method according to claim 1,
Further comprising an alarm module for outputting an audible and visual warning in accordance with an instruction of the control module analyzing the outputs of the plurality of ultrasonic detection modules.

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