KR20220001344A - Apparatus and method for monitoring removal of ETCS terminal - Google Patents

Abstract

To detect the removal of an ETCS terminal, the present invention provides a device and a method for monitoring the removal of an ETCS terminal by deleting a removal recognition subpart and applying an antenna module, a feeding line, a loop circuit and a removal monitoring signal. According to the present invention, comprised are: an ETCS module (30) embedded in a room mirror (10); a vehicle body-side module (60) connected to the ETCS module and having a GPIO terminal including a terminal loopback of GPIO-In and GPIO-Out; a loop line (61) for connecting the terminal loopback of GPIO-In and GPIO-Out of the vehicle body-side module; a first wire (62) connected to the GPIO-Out terminal of the vehicle body-side module from the ETCS module; and a second wire (63) connected to the ETCS module from the GPIO-Out terminal of the vehicle body-side module. A loop circuit for circulating a removal recognition signal through the first wire, the loop line and the second wire is formed and the cutting of the loop circuit is recognized when the ETCS module is removed, thereby monitoring the removal of the ECTS terminal.

Description

ETCS terminal removal monitoring device and method {Apparatus and method for monitoring removal of ETCS terminal}

The present invention relates to a monitoring technology for prevention of removal stipulated in the ETCS (Electronic Toll Collection System) legal standard in China.

The Chinese Electronic Toll Collection System (ETCS) technical standard (GB/T 20851.4 - 2007) requires that the 'separation prevention and recovery' function of the ETCS terminal be applied to the ETCS terminal environment in the vehicle before the market. .

According to the Chinese utility model registration (registration number ZL2016212654275, registration date 2017.11.24.) owned by the present applicant, the ETCS terminal is manufactured in the form of a room mirror, and a physical switch is applied to the room mirror to monitor the removal of the terminal in the above-mentioned manner. have.

According to this after-market ETCS terminal monitoring technology, an ETCS terminal (not shown) is built in the rearview mirror 10 as shown in FIG. 1A . A physical switch for monitoring removal is included in the mounting hole 20 for mounting the rearview mirror 10 to the vehicle windshield (windshield). Specifically, the mounting hole 20 has a structure that can couple the stay 22 to the base 21 adhered to the glass with double-sided tape or other adhesive material, and the stay 22 has a physical switch (eg, A removable recognition sub-part (sub-part) 23 with a micro switch) is applied. When the stay 22 is coupled to the base 21 adhered to the glass to mount the rearview mirror 10, the switch of this detachment recognition subpart 23 is pressed by the glass surface so that the contact is closed. . Thereafter, when the stay 22 of the rearview mirror 10 is separated from the base 21 in order to remove the ETCS terminal, the physical switch is opened as the removal recognition subpart 23 is separated as shown in FIG. 1b. and the fact that the terminal has been removed is recognized.

However, in this ETCS terminal removal monitoring technology, since it is necessary to separately manufacture and assemble the separation recognition subpart 23 to which the physical switch is applied, the assembling property is poor, there is a possibility that structural and cost problems may occur, and the cost increases.

The present inventor proposes the present invention to solve the problems accompanying this by deleting the conventional removal recognition sub-part.

Conventionally, when a room mirror with a built-in ETCS module is mounted on the windshield, a physical switch is pressed between the windshield and the removal recognition subpart to close the circuit, thereby detecting the removal of the ETCS terminal. To provide an apparatus and method for monitoring removal of an ETCS terminal by applying an antenna module, a feeding line, a loop circuit, and a removal monitoring signal.

A device for monitoring whether an ETCS terminal is removed according to one aspect of the present invention includes: an ETCS module built in a rearview mirror; an antenna module connected to the ETCS module through an antenna signal line and attached to a windshield; and a switch included in the antenna module, wherein an on/off state is changed when the antenna module is detached from the windshield, wherein the changed on/off state of the switch is determined when the antenna module is detached from the windshield. The antenna signal added to the signal line and changed thereby is transmitted to the ETCS module to monitor whether the ETCS terminal is removed.

In addition, according to another feature of the present invention, the ETCS module built into the rearview mirror; a body-side module connected to the ETCS module and having a GPIO terminal including a GPIO-In and a GPIO-Out loopback terminal; a loop line connecting the loopback terminals (GPIO-In and GPIO-Out) of the body-side module; a first wire connected from the ETCS module to a GPIO-Out terminal of the body-side module; and a second wire connected from the GPIO-Out terminal of the vehicle body-side module to the ETCS module to form a loop circuit in which a removal recognition signal circulates through the first wire, the loop line, and the second wire, There is provided an ETCS terminal removal monitoring device for monitoring whether the ETCS terminal has been removed by recognizing that the loop circuit is broken when the ETCS module is removed. Here, the removal recognition signal may be a Low/High signal or a predefined pattern signal.

According to another feature of the present invention, the loopback terminals (GPIO-In and GPIO-Out) of the body-side module are electrically connected, and the first wire is connected from the ETCS module to the GPIO-Out terminal of the body-side module. forming a loop circuit through the first wire, the loop line, and the second wire by connecting a second wire connected to the ETCS module from the GPIO-Out terminal of the vehicle body side module; and applying a detachment recognition signal to the formed loop circuit, wherein when the ETCS module is detached, the disconnection of the loop circuit is recognized as the detachment recognition signal to monitor whether the ETCS terminal is detached. this is provided

The configuration and operation of the present invention will become clearer through specific embodiments described later in conjunction with the drawings.

According to the present invention, in order to monitor the removal of the rear-view mirror built-in ETCS terminal, the conventional separate separation monitoring sub-part is deleted, the antenna module and the feeding line are used, and the loop wire is wired to the GPIO terminal of the body-side module. Only by creating a new module and adding only the removal monitoring routine to the software program, it is possible to avoid the design restrictions for applying a physical switch to the conventional separate separation monitoring sub-part, thereby increasing the design structure efficiency. In addition, since the sub-parts for monitoring and removal can be eliminated, the cost can be reduced by simplifying the assembly process.

1a and 1b are conceptual views of ETCS terminal removal monitoring using the conventional removal recognition sub-part 23
2 is an explanatory diagram of the antenna module 40 used in Embodiment 1 of the present invention.
3 is a system configuration diagram of an ETCS terminal removal monitoring apparatus according to Embodiment 1 of the present invention;
4 is a system configuration diagram of an ETCS terminal removal monitoring device according to Embodiment 2 of the present invention;
5 is a system configuration diagram of an ETCS terminal removal monitoring apparatus according to a third embodiment of the present invention;
6 is an exemplary diagram of a signal pattern to be used as a removal recognition signal in Embodiment 3 of the present invention

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the preferred embodiments described in detail below in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described below and may be implemented in various other forms. The examples are only provided to completely disclose the present invention and to completely inform those of ordinary skill in the art to which the present invention pertains to the scope of the invention, and the present invention is defined by the claims will be.

In addition, the terminology used herein is for the purpose of describing the embodiment and is not intended to limit the present invention. In this specification, the singular also includes the plural unless otherwise specified. Also, as used herein, the term 'comprise (comprise, comprising, etc.)' refers to the presence or absence of one or more other components, steps, operations, and/or elements other than the stated elements, steps, operations, and/or elements. It is used in a sense not to exclude addition.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the embodiment, if a detailed description of a related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

As in FIGS. 1A and 1B , in the related art, when the rearview mirror 10 with the ETCS module is mounted on the windshield, the physical switch included in the removal recognition subpart 23 is pressed by the windshield to close the circuit. After installation, when the rearview mirror 10 is removed by someone and the detachment recognition subpart 23 is detached, it is recognized that the contact of the pressed physical switch is opened, thereby detecting the detachment of the ETCS terminal. On the other hand, the present invention provides a structure for detecting the detachment of the ETCS terminal by deleting the detachment recognition subpart 23 and using the existing antenna, feeding line, and loop circuit.

Hereinafter, an ETCS terminal removal monitoring apparatus of the present invention will be described through various embodiments.

1. Example 1 - Using an antenna module and a feeding line

2 is an exemplary diagram of a structure in which the antenna module 40 is attached to the windshield 100 . The ETCS module 30 built into the room mirror 10 and a separate antenna module 40 are connected through a feeding line 50 . The rearview mirror 10 may be mounted by coupling the stay 22 to the windshield 100 as in general. 2 shows an example in which the antenna module 40 is installed in the stay 22 for mounting the rearview mirror 10, but is not limited thereto. For example, by embedding the antenna module 40 in a separate housing box, the housing box may be attached to the windshield 100 .

3 is a system configuration diagram of an ETCS terminal removal monitoring apparatus using the antenna module 40 according to the present embodiment.

By applying the switch 43 to the antenna module 40 connected to the ETCS module 30 built into the room mirror 10 and the feeding line 50 through the feeding line 50, the change in the antenna signal according to the intermittent operation of the switch is recognized. It monitors whether the ETCS terminal is removed.

To this end, when the antenna module 40 is attached to the windshield, the switch 43 is closed or opened to attach the antenna module 40 to the windshield. The switch 43 may be a microswitch with or without a lever, but is not limited thereto.

The switch 43 is connected to the antenna signal line 42 through the filter circuit 44 , and the on/off state of the switch 43 is loaded on the antenna signal line 42 through the filter circuit 44 .

In a vehicle in which the antenna module 40 having such a structure is attached to the windshield and released, when the rearview mirror 10 and the antenna module 40 connected thereto are removed for the purpose of separating the ETCS terminal, the state of the switch 43 accordingly is changed That is, the switch in the closed state is opened when the windshield is attached, or the switch in the open state is closed when the windshield is attached.

The changed on/off state information of the switch 43 is loaded on the antenna signal line 42 through the filter circuit 44 and transmitted to the ETCS module 30 through the feeding line 50 to recognize the fact of removal. there will be

In order to monitor the removal of the ETCS terminal with built-in rearview mirror in this way, by applying the switch to the antenna module that must exist, it is possible to avoid the design restrictions for applying the physical switch to the conventional separate sub-part for monitoring removal. This can increase the design structure efficiency. In addition, since the sub-parts for monitoring and removal can be eliminated, the cost can be reduced by simplifying the assembly process.

2. Example 2 - Using the GPIO terminal of the body-side module

The ETCS must include a body-side module that is connected by cables to supply power and signals to the ETCS module wherever the ETCS module is located. 4 is a system diagram for monitoring the removal of the ETCS terminal using the vehicle body-side module 60 .

In this way, the ETCS module 30 is connected to the built-in rearview mirror 10 through the connector 11 to supply power, ACC, lighting power/signal, etc. to the body-side module 60, which has a constant power terminal (B+) , Accessory power terminal (ACC), ground terminal (GND), lighting power/signal terminal (ILL+), GPIO (general purpose input & output) loopback terminals (GPIO-In and GPIO-Out) supplied only when the engine is started have. Here, the ACC power supply causes the ETCS module 30 to operate normally when the vehicle is keyed on and causes the ETCS module 30 to enter a sleep mode when the vehicle is keyed off. Here, the removal of the ETCS terminal is monitored using a pair of GPIO terminals.

Specifically, the loop line 61 is made by connecting the loopback terminals (GPIO-In and GPIO-Out) using a wire or a cable. Then, the software program is updated to monitor the removal using the signals of the wires 62 and 63 connecting the ETCS module 30 and the GPIO terminal. That is, through "the wire 62 from the ETCS module 30 to the GPIO-Out terminal -> the loop line 61 -> the wire 63 from the GPIO-Out terminal to the ETCS module 30" A loop circuit in which /High's removal recognition signal is circulated should be formed. This is to monitor whether the terminal is detached by using the cycle of the detachment recognition signal.

According to this embodiment, there is no need for a separate removal monitoring switch, only the loop line 61 is made with a wire to the GPIO terminal of the vehicle body side module 60, which must be there, and only the removal monitoring routine is added to the software program. Therefore, it is possible to avoid design restrictions for the separate application of physical switches, and it is possible to improve assembling and reduce costs by deleting the physical switches.

3. Example 3 - Complementing the shortcomings of Example 2

In the case of Embodiment 2, removal monitoring is possible by simple hardware measures (loop circuit configuration) and software program update. The disadvantage is that it is impossible.

In order to prevent the disabling of the removal monitoring due to such intentional voltage application, in Embodiment 2, by applying a predefined pattern signal (eg, a pulse signal) rather than a simple Low/High signal, the disabling of the removal function by a simple voltage supply device is avoided. can do.

This embodiment can be realized only by modifying software without modifying the hardware configuration of FIG. 4 . FIG. 5 shows that a pulse signal is applied as a removal recognition signal to the same loop circuit as FIG. 4 .

The promised signal pattern to be used as a removal recognition signal is arbitrary. 6, a simple pulse signal may be used as shown in (a), or a pulse signal having a somewhat complex waveform may be used as shown in (b).

Although the present invention has been described in detail through preferred embodiments of the present invention, those of ordinary skill in the art to which the present invention pertains will realize that the present invention is different from the contents disclosed in the present specification without changing the technical spirit or essential characteristics thereof. It will be understood that the invention may be embodied in other specific forms. It should be understood that the embodiments described above are illustrative in all respects and not restrictive. In addition, the protection scope of the present invention is determined by the following claims rather than the detailed description, and all changes or modifications derived from the claims and their equivalent concepts should be interpreted as being included in the technical scope of the present invention. do.

Claims (9)

It is a device that monitors whether the ETCS terminal with built-in rearview mirror has been removed.
ETCS module built into the rearview mirror;
an antenna module connected to the ETCS module through an antenna signal line and attached to a windshield; and
Included in the antenna module, including a switch for changing an on/off state when the antenna module is separated from the windshield,
When the antenna module is detached from the windshield, the changed on/off state of the switch is added to the signal line and the changed antenna signal is transmitted to the ETCS module to monitor whether the ETCS terminal is detached. Device. The apparatus of claim 1, wherein the switch is connected to an antenna signal line through a filter circuit. The apparatus of claim 1, wherein the switch is a micro switch. It is a device that monitors whether the ETCS terminal with built-in rearview mirror has been removed.
ETCS module built into the rearview mirror;
a body-side module connected to the ETCS module and having a GPIO terminal including a GPIO-In and a GPIO-Out loopback terminal;
a loop line connecting the loopback terminals (GPIO-In and GPIO-Out) of the body-side module;
a first wire connected from the ETCS module to a GPIO-Out terminal of the body-side module; and
and a second wire connected from the GPIO-Out terminal of the body-side module to the ETCS module,
Forming a loop circuit in which a removal recognition signal circulates through the first wire, the loop line, and the second wire, recognizes that the loop circuit is broken when the ETCS module is removed, and monitors whether the ETCS terminal is removed ETCS terminal removal monitoring device. 5. The apparatus of claim 4, wherein the removal recognition signal is a Low/High signal. [Claim 5] The apparatus of claim 4, wherein the removal recognition signal is a predefined pattern signal. ETCS module built into the rearview mirror; A method of monitoring whether the ETCS terminal is removed by using a body-side module connected to the ETCS module and having a GPIO terminal including a GPIO-In and GPIO-Out loopback terminal,
The loopback terminals (GPIO-In and GPIO-Out) of the body-side module are electrically connected, and a first wire is connected from the ETCS module to the GPIO-Out terminal of the body-side module, and the GPIO- of the body-side module connecting a second wire connected from the Out terminal to the ETCS module to form a loop circuit through the first wire, the loop line, and the second wire; and
Including the step of applying a removal recognition signal to the formed loop circuit,
ETCS terminal removal monitoring method for monitoring whether the ETCS terminal is removed by recognizing that the loop circuit is broken when the ETCS module is removed as the removal recognition signal. The method of claim 7, wherein the removal recognition signal is a Low/High signal. The method of claim 7, wherein the removal recognition signal is a predefined pattern signal.

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