KR102084728B1 - Sensing apparatus for approach of object - Google Patents

Abstract

The present invention relates to an object approach detection apparatus.
According to one aspect of the invention, the weather strip is coupled to the frame of the vehicle body or door of the vehicle, extending in the longitudinal direction, the coupling portion is formed in the groove is inserted into the end of the frame; It is formed extending in the longitudinal direction, the other side of the groove is formed integrally coupled with the coupling portion, the blocking portion for providing a blocking state to the air flow by deforming when the vehicle body and the door close to each other; And an electrode strip provided in at least one of the coupling part and the blocking part in a form extending along a length direction, and the capacitance of the electrode being variable according to the approach of the object to sense the approach of the object. Disclosed is an object approach detection apparatus including a weather strip for object approach detection.

Description

Sensing apparatus for approach of object

The present invention relates to an object approach detection apparatus, and in particular, an object approach detection apparatus including a weather strip coupled to a frame of a vehicle body or a door of an vehicle, the apparatus comprising: an electrode for sensing an approach of an object based on a change in capacitance value The present invention relates to an object approach detecting device configured to prevent a safety accident caused by an occupant or an object between a vehicle body and a door by embedding a strip.

Weatherstrip refers to elastic rubber or sponge provided between the door and the body so that rain, water, and dust do not enter the room when the door is closed. These weatherstrips provide the ability to prevent the door from vibrating during opening or closing, or it can be used to seal the trunk room as well as the door.

In the process of closing the door to the body, a safety accident often occurs where a child or infant is injured by not being able to insert or pull his or her hand in between. In addition, if the door is closed in a state where the cargo such as a bag or a box cannot be taken out, damage to the cargo may occur.

In view of these problems, safety detection techniques for vehicles have been proposed.

For example, Republic of Korea Patent No. 10-1373292 (registered on March 05, 2014) relates to a sensor strip assembly for detecting obstacles of a vehicle, the body coupled to the door frame or the body frame; An insertion hole formed in the body; It is disclosed that the sensor strip is inserted into the insertion hole, and includes a sensor strip having an insulating material, a strip electrode embedded in the sensor body, and a sensing circuit for sensing a change in capacitance of the strip electrode. .

In another example, Korean Patent Laid-Open Publication No. 10-2008-0037092 (published Apr. 29, 2008) relates to a gap stopper incorporating a pinch sensor, a new pinch sensor, and related methods, such as “express up or Applied to powered windows with "automatic" characteristics, a gasket, such as a glass run, has been disclosed that incorporates an associated anti-entrapment sensor.

However, the prior arts have limitations in that they are not suitable for detecting obstacles between the door and the vehicle body in that they are proposed to be suitable for application to the glass window of a vehicle.

In addition, the conventional techniques are assembled in such a way that the separately manufactured sensor is inserted in the insertion hole of the body or the cutting portion or notch of the glass run, the assembly structure is complicated and the material of the sensor and the body or glass run is different from each other for a long time There was a limit to the risk of damage or damage caused by use.

Republic of Korea Patent Registration 10-1373292 (registered March 05, 2014) Republic of Korea Patent Publication 10-2008-0037092 (published April 29, 2008)

The present invention has been made in view of the above problems, and in detail, an object approach detecting apparatus including a weather strip coupled to a frame of a vehicle body or a door of a vehicle, and the object approach detection based on a change in capacitance value. It is an object of the present invention to provide an object approach detecting device configured to prevent a safety accident caused by an occupant or an object between a vehicle body and a door by embedding a sensing electrode strip.

According to an aspect of the present invention for achieving the above object, as a weather strip coupled to the frame of the vehicle body or the door of the vehicle, extending in the longitudinal direction, the coupling portion formed with a groove in which the end of the frame is inserted ; It is formed extending in the longitudinal direction, the coupling portion formed integrally with the coupling portion on the other side of the groove, the blocking portion for providing a blocking state to the air flow is deformed when the vehicle body and the door in close contact with each other; And an electrode strip installed in the coupling part in a shape extending along a length direction, the capacitance strip being variable according to the approach of an object so as to sense the approach of the object. Disclosed is a weatherstrip for object approach detection characterized in that it is configured to provide a pressing force for preventing departure from the inserted end of the frame.

Preferably, the electrode strip is characterized in that it is installed in the coupling portion in the form of a "U" cross-section surrounding the groove.

Preferably, the blocking portion has a hollow cross section, and another electrode strip is embedded at a point of the hollow cross section.

Preferably, the another electrode strip is characterized in that it is built in the blocking side of the hollow cross section.

Preferably, the another electrode strip is characterized in that the inner side on the coupling side of the hollow cross section.

Preferably, the electrode strip provided in the coupling portion forms a positive electrode, and the frame forms a ground or negative electrode.

Preferably, the blocking portion has a hollow cross-sectional shape, wherein the first electrode strip of the electrode strip is embedded at one point of the hollow cross-section, and the second electrode strip has a "U" cross-sectional shape surrounding the groove. It is characterized in that it is built into the coupling portion.

Preferably, the first electrode strip is configured to form a positive electrode, and the second electrode strip is configured to form a ground or negative electrode.

According to another aspect of the invention, the apparatus for detecting the approach of the object using the weather strip for detecting the object approach according to claim 1, the weather strip coupled to the frame of the vehicle body or door of the vehicle; A sensing unit configured to sense a change in capacitance value of the electrode strip embedded in a weather strip; And a controller for determining whether an object is approached by using an electrical signal according to a change in capacitance value detected by the sensing unit, and generating a detection signal for notifying the detection of the object when it is determined that the object is in proximity. It is done.

Preferably, the sensing unit is connected to the RF oscillator, the oscillation frequency is variable according to the change of the capacitance value of the electrode strip, and the RF oscillator, the oscillation frequency of the RF oscillator is based on the change of the capacitance value When the oscillation frequency is changed from the oscillator is characterized in that it comprises a phase locked loop for controlling to maintain the reference oscillation frequency.

Preferably, the control unit stores a sensing signal according to a change in capacitance during a process in which the door of the vehicle is normally closed as a reference signal, and the deviation between the sensing signal and the reference signal when the vehicle door is closed is out of an error range or more. It is characterized by determining that the object is close to the weather strip.

Preferably, the blocking portion of the weather strip has a hollow cross-sectional shape, the electrode strip is installed on the blocking side of the hollow cross section, and the control unit is a change in the capacitance value detected in the open state of the vehicle object When it is determined that the change in the capacitance value due to the approach of the deterioration, it is determined that the degradation occurs in the weather strip is characterized in that for generating a degradation detection signal.

Preferably, the change range of the capacitance value due to the approach of the object is characterized in that the preset.

The present invention has the advantage of preventing the safety accident caused by the occupant or the object is caught between the vehicle body and the door of the vehicle by the sensor formed integrally in the form of a weather strip on the vehicle body or the door frame.

In addition, the present invention has the advantage that the sensor strip is formed integrally coupled to the weather strip, the assembly structure is simple and there is a low risk of damage or damage even in long-term use.

In addition, the present invention has the advantage that it is possible to detect the deterioration of the weather strip through the change in the capacitance value.

1 is a schematic cross-sectional view of a weather strip for object approach detection according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view illustrating a state in which the weather strip for object access detection of FIG. 1 is installed in a frame of a vehicle body or a door; FIG.
3 is a schematic cross-sectional view showing a state in which a weather strip for object approach detection according to another embodiment of the present invention is installed on a frame of a vehicle body or a door;
4 is a schematic cross-sectional view showing a state in which a weather strip for object approach detection according to another embodiment of the present invention is installed on a frame of a vehicle body or a door;
5 is a schematic cross-sectional view showing a state in which a weather strip for object approach detection according to another embodiment of the present invention is installed on a frame of a vehicle body or a door;
6 is a schematic cross-sectional view showing a state in which a weather strip for object approach detection according to another embodiment of the present invention is installed on a frame of a vehicle body or a door;
7 is a schematic cross-sectional view showing a state in which a weather strip for object approach detection according to another embodiment of the present invention is installed on a frame of a vehicle body or a door;
8 is a schematic cross-sectional view showing a state in which a weather strip for object approach detection according to another embodiment of the present invention is installed on a frame of a vehicle body or a door;
9 is a block diagram illustrating a control circuit of an apparatus for detecting an object approach according to an embodiment of the present invention;
FIG. 10 is a partial perspective view illustrating a state in which the weather strip for object access detection of FIG. 1 is installed in a frame of a vehicle body or a door. FIG.

The present invention can be embodied in many different forms without departing from the spirit or main features thereof. Accordingly, the embodiments of the present invention are merely examples in all respects and should not be construed as limiting.

The terms first, second, etc. are used only for the purpose of distinguishing one component from other components. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

When a component is said to be "connected" or "connected" to another component, it may be directly connected or connected to that other component, but there may be other components in between.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In the present application, the terms "comprise", "comprise", "have" and the like are intended to express the presence of a component described in the specification or a combination thereof, and indicate the possibility that another component or feature is present or added. It is not excluded in advance.

In the description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional schematic diagram of a weather strip for object access detection according to an embodiment of the present invention, Figure 2 is a schematic cross-sectional view showing a state in which the object strip for detecting the object access of Figure 1 is installed in the frame of the vehicle body or door. FIG. 10 is a partial perspective view illustrating a state in which the weather strip for object access detection of FIG. 1 is installed in a frame of a vehicle body or a door. FIG.

The weather strip 10 of the present embodiment is coupled to the vehicle body of the vehicle or the frame F of the door, and incorporates an electrode strip 16 that detects the approach of an object based on a change in capacitance value, between the vehicle body and the door. It is configured to prevent safety accidents caused by occupants or objects caught in.

The weather strip 10 of this embodiment has a structure in which the coupling portion 12, the blocking portion 14, and the electrode strip 16 are integrally coupled to each other.

The coupling part 12 is formed to extend in the longitudinal direction, and the groove 12a into which the end of the frame F is inserted is formed. Here, the longitudinal direction may be understood as the longitudinal direction of the frame F end of the vehicle body or the door of the vehicle to which the weather strip 10 is coupled.

The blocking portion 14 extends along the longitudinal direction, is integrally formed with the coupling portion 12 at the other side of the groove 12a, and is pressurized and deformed when the vehicle body and the door are in close contact with each other. Provides a blocking state for. The blocking portion 14 is not limited to a specific cross-sectional shape, but may have a cross-sectional shape that forms a hollow closed curve as shown in the cross-sectional view of FIG. 1.

Through this configuration, the weather strip 10 of the present embodiment is elastically deformed by the pressing force in the P direction when the door is closed to the vehicle body, and receives the restoring force in the R direction when the door is opened from the vehicle body, and thus has a circular shape as shown in FIG. A similar original state is restored.

The electrode strip 16 is formed in at least one of the coupling part 12 and the blocking part 14 in a form extending in the longitudinal direction, and the capacitance value varies according to the approach of the object 5000. It is configured to detect the approach of the object 5000.

For example, the electrode strip 16 is installed in the coupling part 12 in the form of a “U” cross-section surrounding the groove 12a, and an end portion of the frame F inserted into the groove 12a. It is configured to provide an elastic pressing force for preventing departure. To this end, the electrode strip 16 may be formed by bending a plate of a metal material, which may provide a pressing function to the frame F side by an elastic force, into a “U” cross section.

To function as a capacitive sensor, the electrode strip 16 of this embodiment forms a positive electrode and the frame F is configured to form a ground or negative electrode. Through this configuration, the weather strip 10 of the present embodiment forms an electric field capable of detecting an object in the S direction of FIG. 2. Detailed description of the object detection operation will be described later.

Reference numeral 12b, which has not been described, is a branch to allow the end of the frame F inserted into the recess 12a to be firmly supported without being shaken.

9 is a block diagram illustrating a control circuit of an apparatus for detecting an object approach according to an embodiment of the present invention.

The control circuit configuration of the object approach detecting apparatus according to the present embodiment will be described in more detail.

As described above, the weather strip 10 of the present embodiment is coupled to the frame F of the vehicle body or the door of the vehicle by an insertion method and constitutes a detector 1100 for detecting an object.

For example, the sensing unit 1100 may have an electrode strip 16 embedded in a weather strip 10 extending along a length direction and facing at least a part or the entire area of the electrode strip 16. Frame F of the vehicle body or door. Referring to FIG. 2, the coupling portion 12 of the weather strip 10 provides a coupling function to the frame F, together with the inner and / or outer side formed by the electrode strip 16 and the frame F. FIG. It serves as a sensor frame that maintains the space at intervals that can form an electric field. To this end, the coupling part 12 of the weather strip 10 may be formed of a synthetic resin material or a synthetic rubber material having a predetermined strength and elasticity while having a dielectric property.

For example, the electrode strip 16 forms a positive electrode plate, and the frame F forms a ground or negative electrode plate, so that the inside and / or the electrode strip 16 and the frame F form. Alternatively, an electric field E for capacitive sensing is formed in the outer space.

When an object 5000 such as a body part of a vehicle occupant or a cargo is located in or near the outer space of the electrode strip 16, a change occurs in the capacitance formed by the electrode strip 16 and the frame F. The presence or absence of such a change is sensed to detect the presence of the object 5000.

The electrode strip 16 may be understood to be processed into a strip-like form of a conductive material such as a metal plate or a metal braid. The actual implementation shape of the electrode strip 16 is preferably in the form of a plate, but if it has a configuration, size, and position capable of forming an electric field E for capacitive sensing, it is necessarily a plate-shaped in the form shown. It does not need to be formed as. The electrode strip 16 may be integrally installed in the weather strip 10 through, for example, extrusion.

The frame F is usually made of a conductive metal plate.

Preferably, the electrode strip 16 and the frame F may be insulated on the surface. Insulation treatment may be performed by forming a coating layer from a conventional insulating material.

A sensing unit 1000 for detecting a change in capacitance of the electrode strip 16 constituting the sensing unit 1100 is provided. In addition, the control unit 2000 for performing a control operation by the sensing signal of the sensing unit 1000 is provided.

In the sensing execution mode, the controller 2000 may detect a space to be detected near the weather strip 10, that is, the weather strip 10, based on an electrical sensing signal according to a change in capacitance value detected by the sensing unit 1000. When it is determined that the object 5000 is located in or near the space between the vehicle body and the door of the installed vehicle, an alarm signal for detecting the detection of the object 5000 is generated. Reference numeral 1700 is an alarm unit. The alarm unit 1700 may be configured to provide an alarm alarm to a user through sound or time, and include a communication module (not shown) to alert the user terminal 4000 or a vehicle control unit (not shown) as described below. Can also be transmitted.

For example, the sensing unit 1000 and the control unit 2000 may be configured as follows.

The sensing unit 1000 according to the present embodiment is connected to the sensing unit 1100, and an RF oscillator having an oscillation frequency varying according to a change in capacitance value of the electrode strip 16 of the sensing unit 1100 ( 1520; The RF oscillator 1520 is connected to the RF oscillator 1520 and controls the RF oscillator 1520 to maintain a reference oscillation frequency when the oscillation frequency of the RF oscillator 1520 is changed from a reference oscillation frequency according to a change in the capacitance value. Phase locked loop portion is included.

The controller 2000 is connected to the phase-locked loop part, and an object using an electrical signal received from the phase-locked loop part while the phase-locked loop part controls the RF oscillator 1520 to maintain a reference oscillation frequency. It includes a MCU (Micro Controller Unit0) (500) for determining the proximity of the (5000).

In order to configure the sensing unit 1100, the frame F may be in the same state as the ground electrode, and the electrode strip 16 may be connected to the RF oscillator 1520.

In the present exemplary embodiment, a capacitance sensing circuit including an RF oscillator 1520 and a phase-locked loop unit configured to output a signal corresponding thereto when a change occurs in the capacitance of the sensing unit 1100 is configured. The capacitive sensing circuit is electrically connected to the MCU 2500 and receives the output signal of the phase locked loop to determine whether the object 5000 is close.

The RF oscillator 1520 is connected to the sensing unit 1100 so that an AC power waveform according to the oscillation frequency may be applied to the sensing unit 1100.

For example, the RF oscillator 1520 is preferably a voltage control oscillator (VCO) that can adjust the frequency by voltage, but the type is not limited in the present invention.

The phase locked loop part plays a role of maintaining a constant oscillation frequency of the RF oscillator 1520. That is, the phase locked loop part is a frequency control circuit configured to automatically correct a difference between the set reference oscillation frequency and the oscillation frequency according to the change of the capacitance value of the sensing unit 1100.

That is, when the oscillation frequency of the RF oscillator 1520 is changed from the reference oscillation frequency according to the change of the capacitance value, a circuit for adjusting the RF oscillator 1520 to maintain the set reference oscillation frequency at all times is a PLL.

The MCU 2500 is connected to the phase-locked loop part to determine whether the object 5000 is close based on a change in the oscillation frequency value of the RF oscillator 1520 according to the change of the capacitance value. In the MCU 2500, a reference oscillation frequency value of the RF oscillator 1520 may be preset.

That is, when the capacitance value changes in the sensing unit 1100 in accordance with the proximity of the object 5000, the oscillation frequency of the RF oscillator 1520 is changed from the reference oscillation frequency, and accordingly the RF in the phase locked loop unit By controlling the voltage applied to the oscillator 1520, the change in frequency is canceled to keep the oscillation frequency of the RF oscillator 1520 constant. In the description of this embodiment, the voltage set so that the oscillation frequency of the RF oscillator 1520 maintains the reference oscillation frequency may be understood as a 'frequency setting voltage', and the oscillation frequency of the RF oscillator 1520 is changed from the reference oscillation frequency. In this case, the voltage applied to cancel this can be understood as the 'voltage for voltage adjustment'.

The frequency adjustment voltage value for controlling the oscillation frequency of the RF oscillator 1520 is transmitted to the MCU 2500 through an analog-to-digital converter (ADC) 2510 in the form of an electrical signal. When the allowable range of the electrical signal reference value preset in 2500 is exceeded, it is determined that the object 5000 is close to the sensing unit 1100. An electrical signal transmitted to the MCU 2500 through the ADC 2510 may be understood as a sensing signal.

On the other hand, the MCU 2500 is connected through the input unit 1620 for the control input and output, the power supply 1630 for power supply and the transmission line 2530, and is connected to the alarm unit 1700 through the interface 2640. . For example, the interface 2640 may include various interfaces usable to the alarm unit 1700, including a known RS232 interface.

The MCU 2500 detects an electrical signal (for example, a frequency adjustment voltage value) output from the phase locked loop unit, determines whether the object 5000 is close, and generates an alarm signal informing of object detection.

In addition, the input unit 1620 connected to the MCU 2500 is a portion in which a user inputs an operation signal or a reset signal, and the power supply 1630 includes a sensing unit 1100, an RF oscillator 1520, and phase fixing. It serves to supply driving power to the loop unit and the MCU 2500, for example, to provide a DC power supply of DC 5V.

Since the weather strip 10 of the present embodiment is installed on a door or a vehicle body to prevent a safety accident, the MCU 2500, the input unit 1620, and the power supply 1630 are a control unit (not shown) of the vehicle control system. It may be configured to be integrated with or interlocked with the driver input / output means (not shown) and the vehicle power supply unit (not shown).

The phase locked loop portion of this embodiment will be described in more detail.

The phase locked loop of the present embodiment includes a variable capacitor diode 1410, a phase locked loop IC 1420, a phase locked loop IC 1420, and a variable capacitor diode 1410 having one end connected to the RF oscillator 1520. And a frequency adjusting signal line 1430 and a frequency detecting capacitor 1440 to be connected. Reference numeral 1470 is an oscillator that provides a reference frequency to the phase locked loop IC 1420. In the present embodiment, the frequency detection capacitor 1440 is used as a frequency sensing means for continuously detecting the oscillation frequency of the RF oscillator 1520. If the oscillation frequency of the RF oscillator 1520 can be transmitted to the phase-locked loop IC 1420, the frequency sensing means may be other well-known elements other than the illustrated frequency detecting capacitor 1440 may be used.

The variable capacitance diode 1410 has a property that the capacitance varies according to the applied voltage, one end of which is connected to the frequency adjusting signal line 1430 while the other end is grounded.

When the oscillation frequency of the RF oscillator 1520 maintains the reference oscillation frequency without the proximity of the object 5000, the frequency setting voltage corresponding to the reference oscillation frequency maintains the set value.

When the oscillation frequency of the RF oscillator 1520 is about to deviate from the reference oscillation frequency due to the proximity of the object 5000, a frequency adjusting voltage is applied to the variable capacitance diode 1410 or an appropriate frequency adjusting voltage is changed. Ensure that the reference oscillation frequency is maintained.

It may be understood that applying or changing the frequency adjusting voltage further applies the voltage adjusting voltage on the condition of + or-in addition to the frequency setting voltage originally applied to the variable capacitance diode 1410 to oscillate the reference oscillation frequency. Can be. In another aspect, the present invention may be understood from the viewpoint of applying a frequency adjusting voltage for adaptively maintaining the reference oscillation frequency in place of the frequency setting voltage.

The RF oscillator 1520 and the phase locked loop IC 1420 are connected in parallel with the variable capacitance diode 1410.

The phase locked loop IC 1420 is controlled by the MCU 2500 and continuously detects an oscillation frequency of the RF oscillator 1520 through a frequency detecting capacitor 1440, and oscillates of the RF oscillator 1520. When the frequency is changed from the reference oscillation frequency, the frequency adjusting voltage is supplied to the variable capacitance diode 1410 through the frequency adjusting signal line 1430 to control the oscillation frequency of the RF oscillator 1520 to maintain the reference oscillation frequency. .

In the control, an electrical signal received by the MCU 2500 from the phase-locked loop part uses a frequency adjusting voltage output from the phase-locked loop IC 1420 to supply the variable capacitance diode 1410. .

Preferably, the frequency adjustment signal line 1430 may be provided with a loop filter 1450 for filtering unnecessary signals from the input voltage to the RF oscillator 1520.

With such a configuration, for example, the oscillation frequency of the RF oscillator 1520 can be kept constant by using the phase lock loop IC 1420 of the phase lock loop portion in the sensing execution mode of the object.

That is, since the oscillation frequency of the RF oscillator 1520 changes when the object 5000 is located in the sensing space and the capacitance of the sensing unit 1100 changes, the variable capacitance diode 1410 in the phase locked loop IC 1420 is changed. The oscillation frequency is kept constant by appropriately changing the frequency adjusting voltage applied to

In the present exemplary embodiment, the MCU 2500 controls the driving of the phase-locked loop IC 1420 of the phase-locked loop portion, and changes the frequency-adjusted voltage through the frequency adjust signal line 1430 connected to the loop filter 1450. Detect. In addition, the MCU 2500 determines whether the object 5000 is close based on the sensed voltage value.

For example, if it is determined by the MCU 2500 that the object 5000 is located in the sensing space between the door and the vehicle body of the vehicle, the MCU 2500 controls the alarm unit 1700 to generate an alarm signal informing of object detection. do.

The MCU 2500 may store a frequency adjustment voltage change as a reference signal, and may be implemented as a hardware configuration that includes software for a function such as determining whether an object exists or implements a corresponding algorithm. In addition, two or more MCUs may execute distributed processing to share control functions.

As a modification, the control unit 2000 of the present embodiment is installed in a vehicle having an automatic door by an actuator and is connected to a vehicle control unit (not shown) so that the vehicle control unit recognizes an alarm signal generated by the control unit 2000. Or an emergency control action (eg, automatic door operation stop, emergency alarm output).

The object approach detecting apparatus of the present embodiment basically detects whether the object 5000 is close to the sensing space near the weather strip 10 in a state where the door of the vehicle is open (a sensing mode). To this end, when a known door opening sensor (not shown) detects that the vehicle door is open, the vehicle door may be switched to a sensing mode, and it may be detected that an object is near when the capacitance of the weather strip 10 changes. When the door open detection sensor (not shown) detects the door closed state, the detection mode is released. Vehicle doors can be applied to both automatic and manual doors.

As another example, the object approach detection apparatus of the present embodiment may detect an object proximity in the process of closing the door of the vehicle.

In this case, the control unit 2000 stores the sensing signal according to the capacitance change in the process of closing the vehicle door as a reference signal, and the deviation between the sensing signal and the reference signal when the vehicle door is closed is an error range. In the case of abnormal deviation, it is determined that the object is close to the weather strip 10. The sensing signal according to the capacitance change may be stored, for example, in the form of a signal change pattern.

For example, the predetermined reference signal may be a frequency change voltage change applied to the variable capacitance diode 1410 generated in a process in which the vehicle door is normally closed.

That is, the MCU 2500 stores the frequency adjustment voltage change applied to the variable capacitance diode 1410 as a reference signal during the normal closing of the vehicle door, and applies it to the variable capacitance diode 1410 when the door is actually opened or closed. If the deviation between the frequency adjustment voltage change and the reference signal pattern is more than the error range it can be determined that the object is in the sensing space of the weather strip (10).

Figure 3 is a schematic cross-sectional view showing a state in which the object strip for detecting the weather approach according to another embodiment of the present invention installed on the frame of the vehicle body or door, Figure 4 is a weather strip for object access detection according to another embodiment of the present invention It is a cross-sectional schematic diagram which shows the state installed in the frame of this vehicle body or the door.

In the weather strip 10 of the present embodiment, the blocking portion 114 has a hollow cross-sectional shape, and the electrode strip 116 is embedded at one point of the hollow cross section. The electrode strip 116 of the present embodiment is configured to have a narrow cross-sectional area as shown in FIG. 3 rather than a plate-shaped cross-sectional shape having a wide installation cross section as shown in FIG. 1, and may be formed as a metal strip or metal braided wire having a narrow width as an example. have.

The electrode strip 116 of the present embodiment may be installed at various positions of the blocking unit 114.

For example, as shown in FIG. 3, the electrode strip 116 is insulated on the blocking side of the hollow cross section (the side where the door and the vehicle body abut). In such a configuration, there is an advantage in that it is more advantageous in terms of sensitivity of sensing an object 5000 or expansion of a sensing space.

As another example, as shown in FIG. 4, the electrode strip 216 is housed on the side of the coupling portion 212 of the hollow cross section. In such a configuration, since the electrode strip 216 is relatively less subjected to deformation or external force due to the door opening and closing, the electrode strip 216 has excellent durability and durability against long-term use.

In the configuration of FIG. 3 or 4, the electrode strips 116, 216 form a positive electrode and the frame F forms a ground or negative electrode.

Components providing the same or similar functions as those of FIG. 1 among the non-explained symbols of FIG. 3 are indicated by appending '1' in front of the same symbol as FIG. 1. Components that provide the same or similar functions as those of FIG. 1 among the non-explained codes of FIG. 4 are indicated by appending '2' in front of the same code as FIG. 1.

5 is a schematic cross-sectional view showing a state in which a weather strip for object approach detection according to another embodiment of the present invention is installed on a frame of a vehicle body or a door.

In the weather strip 10 of the present embodiment, the blocking portion 314 has a hollow cross-sectional shape, and the first electrode strip 316 among the electrode strips 316 and 318 is embedded at one point of the hollow cross section. . In the case of FIG. 5, similar to FIG. 3 described above, the first electrode strip 316 is built on the blocking side (the side where the door and the vehicle body abut) of the hollow cross section, but is not necessarily limited to this position.

The second electrode strip 318 is embedded in the coupling portion 312 in the form of a “U” cross section surrounding the recess 312a.

In this configuration, the first electrode strip 316 forms a positive electrode and the second electrode strip 318 is configured to form a ground or negative electrode.

In the electrode configuration of the capacitive sensor, as in the embodiment of Fig. 1 or 3, the ground electrode (-) electrode may be used as the frame of the vehicle body or the door, but the vehicle body or the door may be damaged or deformed during the driving of the vehicle. In this case, a change or an error may occur in the initially set capacitance condition. If both the (+) electrode and the (-) electrode are formed as separate electrode strips in the weather strip 10 as in the present embodiment, there is an advantage that a change or error in the capacitance condition can be prevented. .

Components that provide the same or similar functions as those of FIG. 1 among the non-explained symbols of FIG. 5 are indicated by appending '3' in front of the same symbol as that of FIG. 1.

Figure 6 is a schematic cross-sectional view showing a state in which the object strip for detecting the object approach according to another embodiment of the present invention is installed on the frame of the vehicle body or door, Figure 7 is a weather strip for object access detection according to another embodiment of the present invention Fig. 8 is a cross-sectional schematic diagram showing a state in which the vehicle body or door is installed in the frame. Fig. 8 is a cross-sectional schematic diagram showing an object access detecting weather strip according to another embodiment of the present invention installed in the frame of the vehicle body or door.

Weather strip 10 of the present invention may be formed in the block 14, 114, 214, 314 in the position illustrated in Figures 1 to 5, depending on the installation location or use. For example, this structure can be seen in a form suitable for a typical vehicle side door.

As a variant, the positions of the blocking portions 414, 514, 614 may be formed at positions as illustrated in FIGS. 6 to 8. For example, this structure can be seen in a form suitable for a general vehicle trunk door or hatchback door. With this configuration, an electric field for object detection is formed in the direction illustrated by S in FIGS. 6 to 8.

Components that provide the same or similar functions as those of FIG. 1 among the non-explained symbols of FIG. 6 are indicated by appending '4' in front of the same symbols as in FIG. 1. Components that provide the same or similar functions as those of FIG. 1 among the non-explained symbols of FIG. 7 are indicated by appending '5' in front of the same symbol as that of FIG. 1. Components providing the same or similar functions as those of FIG. 5 among the non-explained codes of FIG. 8 are denoted by appending '6' instead of '3' in front of the same code as FIG. 5.

On the other hand, the object detecting apparatus according to an embodiment of the present invention may provide a degradation detection function of the weather strip (10).

For example, as shown in FIG. 3, the cutoff portion 114 of the weather strip 10 has a hollow cross-sectional shape, and the electrode strip 116 is built in a blocking side of the hollow cross section. In this case, it may be determined whether the weather strip 10 is detected to be deteriorated by a change in the capacitance of the electrode strip 116.

For example, when the weather strip 10 is deteriorated, the elastic restoring force of the blocking unit 114 is weakened or damage is generated so that the distance d between the electrode strip 116 and the frame F in the open state of the vehicle. May be changed (see FIG. 3).

At this time, the capacitance value of the electrode strip 116 is changed, the control unit 2000, the change in the capacitance value detected in the open state of the vehicle changes the range of the capacitance value by the approach of the object 5000 If it is determined that the deviation is out, it is determined that degradation has occurred in the weather strip 10 to generate a degradation detection signal.

Due to the configuration of the weather strip 10 of this embodiment, the change in capacitance value due to the approach of the object 5000 and the change in capacitance value due to deterioration of the weather strip 10 have different characteristics.

For example, since the change in capacitance due to the approach of the object 5000 is made in an external electric field formed in the outer region of the electric field formed by the electrode strip 116 and the frame F, the change range is relatively small. On the contrary, since the change in the capacitance value due to the deterioration of the weather strip 10 is made in the internal electric field formed inside the electric field formed by the electrode strip 116 and the frame F, the change in capacitance is small even in the distance d. The range of change is relatively large.

Accordingly, the change range of the capacitance value due to the approach of the object 5000 is caused by a change in the distance d between the electrode strip 116 and the frame F according to the deterioration of the weather strip 10. Since it has a relatively small value compared to the change range of the capacitance value, if the degree of change in the capacitance value sensed by the sensing unit 1000 is determined and determined, the control unit 2000 may determine whether the degradation.

The change range of the capacitance value due to the approach of the object 5000 is set in advance.

For example, the change range of the capacitance value due to the approach of the object 5000 may be set to a specific value by a user's input. In another example, the actual capacitance value varies according to the approach of the object 5000. The range may be set by measuring data.

The degradation detection signal is transmitted to the user through the alarm unit 1700, through which the user determines that the degradation has occurred in the weather strip 10, and replaces (or repairs) the weather strip 10 by removing the weather strip 10. Can easily solve the problem.

3, the block 114 of the weather strip 10 has a hollow cross-sectional shape, and the electrode strip 116 has a configuration in which the hollow strip has a built-in side. 5, 6 and 8 can also be applied to the embodiments.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many different and obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include many such variations.

10: Weatherstrip
12: coupling part
12a: groove
14: blocking part
16: electrode strip
F: frame of the car body or door
1000: sensing unit
1100: detector
2000: control unit
4000: user terminal
5000: object

Claims (13)

A coupling part 12 coupled to the frame F of the vehicle body or the door of the vehicle, extending along the longitudinal direction, and having a recess 12a into which an end of the frame F is inserted, extending along the longitudinal direction; And a blocking portion 14 formed integrally coupled with the coupling portion 12 at the other side of the groove 12a and being deformed under pressure when the vehicle body and the door are in close contact with each other to provide a blocking state to air flow, and a length direction The end portion of the frame (F) inserted into the groove (12a) is to be installed in the groove 12a so as to be installed in the coupling portion 12 and the capacitance value is variable according to the approach of the object to detect the approach of the object. A weatherstrip 10 including an electrode strip 16 configured to provide a pressing force for preventing the breakaway;
A sensing unit (1000) for sensing a change in capacitance value of the electrode strip (16) embedded in a weather strip (10);
A controller 2000 that determines whether an object approaches by using an electrical signal according to a change in capacitance value sensed by the sensing unit 1000, and generates a detection signal informing of detection of an object when it is determined that the object is in proximity; Including;
Block 14 of the weather strip 10 has a hollow cross-sectional shape, the electrode strip 16 is built on the blocking side of the hollow cross section,
When the controller 2000 determines that the change in the capacitance value detected in the open state of the vehicle is outside the change range of the capacitance value due to the approach of an object, the controller 2000 determines that the weather strip 10 is deteriorated. And an object approach detection apparatus for generating a degradation detection signal.
The method of claim 1,
The change range of the capacitance value due to the approach of the object is an object approach detection apparatus, characterized in that the preset. delete delete delete delete delete delete delete delete delete delete delete

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