Scaffolded detection system

Abstract

A footplate-type detection system is disclosed in this specification. A footplate-type detection system according to various embodiments of this specification includes a sensing unit comprising at least one sensor module and a control unit that processes a signal sensed from the sensing unit. The sensor module includes a case bottom plate comprising an engraved portion, a sensor disposed on the engraved portion, a first raised portion disposed on the sensor, and a second raised portion protruding in the direction in which the sensor is disposed, and a case top plate disposed on the first raised portion. The control unit may include a recognition signal generating unit that generates a recognition signal. According to the footplate-type detection system of this specification, a situation in which a passenger is trapped at one end of a platform may not occur due to an improved detection rate, and thus the safety of the passenger may be ensured.

Description

Technology Field

[0001] This specification relates to a footplate-type detection system. Background Technology

[0002] Platform Screen Doors (PSDs), installed on subway platforms, are facilities designed to ensure passenger safety and improve the platform environment by blocking the platform from the tracks where trains travel. Generally, screen doors are formed by installing a fixed wall at the edge of the platform and connecting an automatic door to this wall so that it opens and closes automatically.

[0003] The automatic doors of the screen doors are set to open and close automatically in conjunction with the train doors, and to open the doors only when the train doors are open to allow passengers to board and alight, while maintaining a closed position in other situations to prevent passengers from falling or accidents involving contact with the train.

[0004] In principle, facilities cannot be installed on the platform between the screen door and the train. Consequently, an empty space with a width of at least 400 mm may occur on the platform between the screen door and the train. If a person becomes trapped in this platform, it can lead to a very dangerous situation. In other words, if the train doors and the screen door close while a passenger has passed through the screen door but has not yet boarded the train, the passenger becomes trapped between them. Consequently, a dangerous accident may occur where a passenger is positioned between the closed screen door and the closed train door.

[0005] To prevent such problems, technology has been developed to install infrared or image sensors on screen doors to detect user movements and open or close the doors accordingly. However, these sensors are highly susceptible to external environmental factors such as smartphone light, indoor lighting, and dust, which can frequently lead to malfunctions.

[0006] Therefore, a system is required that prevents the screen door from closing when any object or person is detected on the platform between the screen door and the train even though the train door has closed. The problem to be solved

[0007] The present specification aims to solve the aforementioned necessities and / or problems according to the prior art.

[0008] The problems of this specification are not limited to those mentioned above, and other problems not mentioned will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0009] A footplate-type detection system according to various embodiments of the present specification includes a sensing unit comprising at least one sensor module and a control unit that processes a signal sensed from the sensing unit. The sensor module includes a case bottom plate comprising an engraved portion, a sensor disposed on the engraved portion, a first raised portion disposed on the sensor, and a second raised portion protruding in the direction in which the sensor is disposed, and a case top plate disposed on the first raised portion. The control unit may include a recognition signal generating unit that generates a recognition signal.

[0010] According to various embodiments of the present specification, the cognitive signal may include a visual signal.

[0011] According to various embodiments of the present specification, the cognitive signal may include an auditory signal.

[0012] According to various embodiments of the present specification, a recognition signal receiving unit that receives a recognition signal from a recognition signal generating unit may be further included.

[0013] According to various embodiments of the present specification, a recognition signal receiving unit can transmit a signal that passengers can visually recognize to a display device based on the received recognition signal.

[0014] According to various embodiments of the present specification, a cognitive signal receiver can transmit a signal to an audio device that passengers can audibly perceive based on the received cognitive signal. Effects of the invention

[0015] According to the present specification, the improvement in detection rate may prevent a situation where a passenger is trapped at one end of the platform, thereby ensuring the safety of the passenger.

[0016] According to the present specification, the detection rate of a signal detected by a detection system can be improved.

[0017] According to the present specification, the power consumption of the sensing system can be reduced. Brief explanation of the drawing

[0018] Figure 1 is a diagram showing a situation in which a passenger may be trapped on the platform between the screen door and the train. Figure 2 is a drawing showing a platform and a sensing unit. FIG. 3 is a block diagram showing a footplate-type detection system according to one embodiment of the present specification. FIG. 4 is a block diagram showing a footplate-type detection system according to another embodiment of the present specification. Figure 5 is a diagram showing the non-loaded section and the periodic loaded section divided on a daily basis. Figure 6 is a diagram illustrating the non-loaded section and the periodic loaded section on the time axis. FIG. 7 is a plan view showing a sensing unit according to one embodiment of the present specification. FIG. 8 is a plan view showing a sensing unit according to another embodiment of the present specification. FIG. 9 is a perspective view showing a sensor module according to one embodiment of the present specification. FIG. 10 is a cross-sectional view showing a sensor module according to one embodiment of the present specification. FIG. 11 is a plan view showing a sensor according to one embodiment of the present specification. FIGS. 12 and 13 are cross-sectional views showing a sensor according to one embodiment of the present specification. FIG. 14 is a cross-sectional view for explaining the operating principle of a sensor according to one embodiment of the present specification. FIG. 15 is a plan view showing a case top plate according to one embodiment of the present specification. Figure 16 is a simulation table showing the sensitivity of the sensor according to the presence or absence of the raised portion. Specific details for implementing the invention

[0019] The advantages and features of the invention disclosed in this specification, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the accompanying drawings. The scope of the invention according to this specification is not limited to the embodiments disclosed below but may be implemented in various different forms; the embodiments are merely intended to ensure that the disclosure of the invention according to this specification is complete. This specification is provided to fully inform those skilled in the art of the scope of the invention according to this specification, and the scope of the invention according to this specification is defined only by the scope of the claims.

[0020] In describing the invention according to this specification, if it is determined that a detailed description of related prior art could unnecessarily obscure the gist of this specification, such detailed description is omitted.

[0021] Where terms such as “comprising,” “may include,” “having,” “consisting of,” etc. are used in this specification, other parts may be added unless “~ only” is used. Where a component is expressed in the singular, it may be interpreted as plural unless specifically stated otherwise.

[0022] When positional and interconnected relationships between two components are described, such as 'on', 'on top of', 'under', 'next to', 'connect or couple', or 'crossing or intersecting', one or more other components may be interposed between the components unless otherwise noted, such as 'immediately' or 'directly'.

[0023] When temporal sequences are described using 'after', 'following', 'next', 'before', etc., they may not be continuous on the time axis unless 'immediately' or 'directly' is used.

[0024] First, second, etc. may be used to distinguish components, but the function or structure of these components is not limited by the ordinal number or component name preceding the component.

[0025] Here, X and Y are assumed to be objects (e.g., devices, components, circuits, wiring, electrodes, terminals, conductive films, layers, etc.).

[0026] An example of a case where "X and Y are directly connected" is when no device enabling electrical connection between X and Y (e.g., a switch, transistor, capacitance element, inductor, resistor, diode, display element, light-emitting element, load, etc.) is connected between X and Y. Alternatively, it is a case where X and Y are connected without any intermediary device enabling electrical connection between X and Y (e.g., a switch, transistor, capacitance element, inductor, resistor, diode, display element, light-emitting element, load, etc.).

[0027] As an example of a case where "X and Y are electrically connected," one or more devices that enable electrical connection between X and Y (e.g., a switch, a transistor, a capacitive element, an inductor, a resistive element, a diode, a display element, a light-emitting element, a load, etc.) may be connected between X and Y. Additionally, the switch has a function of controlling on / off. The switch has a function of controlling whether to turn on or off and whether to flow current. Alternatively, the switch has a function of selecting and switching the path through which current flows. Additionally, cases where X and Y are electrically connected include cases where X and Y are directly connected.

[0028] As an example of a case where X and Y are functionally connected, it is possible to connect one or more circuits that enable the functional connection of X and Y (e.g., logic circuits (inverters, NAND circuits, NOR circuits, etc.), signal conversion circuits (D / A conversion circuits, A / D conversion circuits, gamma correction circuits, etc.), potential level conversion circuits (power supply circuits (boost circuits, step-down circuits, etc.), level shifter circuits that change the potential level of a signal, etc.), voltage sources, current sources, switching circuits, and amplifier circuits (circuits capable of increasing signal amplitude or current amount, operational amplifiers, differential amplifier circuits, source follower circuits, buffer circuits, etc., signal generation circuits, memory circuits, control circuits, etc.). Furthermore, as an example, if a signal output from X is transmitted to Y even if another circuit is inserted between X and Y, X and Y are considered to be functionally connected. Additionally, when X and Y are functionally connected, there are cases where X and Y are directly connected and cases where X and Y are electrically connected. It is included in the category.

[0029] Where there is an explicit description in the present specification, etc., that X and Y are electrically connected, it shall be deemed that cases in which X and Y are electrically connected (i.e., X and Y are connected by interposing another element or circuit between them), cases in which X and Y are functionally connected (i.e., X and Y are functionally connected by interposing another circuit between them), and cases in which X and Y are directly connected (i.e., X and Y are connected without interposing another element or circuit between them) are disclosed.

[0030] Where there is an explicit statement in this specification, etc., that it is "electrically connected," it shall be deemed that the same content is disclosed in this specification, etc., as where there is an explicit statement that it is merely "connected."

[0031] In this specification and other documents, the terms "film" and "layer" may be described as having substantially the same meaning depending on the context. For example, the term "conductive layer" may be replaced with the term "conductive film." Alternatively, for example, the term "insulating film" may be replaced with the term "insulating layer."

[0032] In general, potential (voltage) is relative, and its magnitude is determined by its relative magnitude to a reference potential. Even when terms such as "ground," "GND," or "Ground" are used, the potential is not necessarily limited to 0V. For example, "ground" or "GND" may be defined based on the lowest potential in the circuit. Alternatively, "ground" or "GND" may be defined based on an intermediate potential in the circuit. In such cases, positive and negative potentials are defined based on that potential.

[0033] The following embodiments may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or together in an associated relationship.

[0034] Terms used in the embodiments of this specification (including technical and scientific terms) may be interpreted in a meaning that is generally understood by those skilled in the art to which the invention of this specification belongs, unless explicitly and specifically defined otherwise. Terms that are commonly used, such as terms defined in advance, may be interpreted in consideration of their meaning in the context of the relevant technology.

[0035] Hereinafter, embodiments of the present specification will be described in detail with reference to the attached drawings.

[0036] Figure 1 is a diagram showing a situation in which a passenger may be trapped on the platform between the screen door and the train.

[0037] Referring to FIG. 1, a passenger (P) on the platform can pass through one end (E) of the platform to board the train (V) when the screen door (D) is open. As described above, since the opening and closing of the screen door (D) is linked to the doors of the train, if the passenger (P) passing through the one end (E) fails to board the train (V), the passenger may be trapped between the screen door (D) and the train (V) by the screen door (D), which can be automatically closed.

[0038] Since the passenger (P) steps on the first section (E) while passing through it, a load can be detected on the first section (E), and if the opening and closing of the screen door (D) is controlled based on the detected load, a situation in which the passenger (P) is trapped in the first section (E) may not occur, and thus the safety of the passenger (P) can be ensured. Accordingly, the footplate-type detection system according to the present specification may include a sensing unit that detects a load, and the sensing unit may be placed on the first section (E).

[0039] Figure 2 is a drawing showing a platform and a sensing unit.

[0040] Referring to FIG. 2, the screen door (D) may include first to fourth doors (D1 to D4). The first door (D1) and the second door (D2) can be moved to create a space for passengers to pass through when the train actually arrives at the platform. The third door (D3) and the fourth door (D4) may be installed for purposes such as providing a frame through which the first door (D1) and the second door (D2) can move when they move, adjusting the spacing between multiple train doors, and blocking the passage to the track so that passengers cannot go to a space other than the moving doors, such as the first door (D1) and the second door (D2).

[0041] For example, when the train arrives at the platform and the doors open, the first door (D1) may be positioned so as to move parallel to the direction in which the third door (D3) is positioned and overlap with the third door (D3). The second door (D2) may be positioned so as to move parallel to the direction in which the fourth door (D4) is positioned and overlap with the fourth door (D4).

[0042] Passengers can proceed toward the entrance of the train through the empty space created by the movement of the first door (D1) and the second door (D2). In this process, passengers can pass through one end (E) of the platform. Passengers can pass through the part of the one end (E) that overlaps with the open first and second doors (D1, D2). Therefore, a load can be detected in the overlapping part (100). Since the detection of a passenger's load indicates an attempt to board the train through the entrance of the train, there may be cases where the passenger is unable to board the train. At this time, the first and second doors (D1, D2) must be kept open while the load is detected so that the screen doors (D1, D2) do not close.

[0043] In a footrest-type detection system according to one embodiment of the present specification, the sensing unit (100) is required to detect the load of a specific object and may be placed at a first end (E) that overlaps with the first and second doors (D1, D2) that open in overlap with the doors of the electric train when the electric train arrives at the track. The footrest-type detection system according to the present specification can prevent a situation in which a passenger is trapped in the first end (E) by ensuring that the first and second doors (D1, D2) remain open when a load is detected by the sensing unit (100), thereby ensuring the safety of the passenger.

[0044] FIG. 3 is a block diagram showing a footplate-type detection system according to one embodiment of the present specification. FIG. 4 is a block diagram showing a footplate-type detection system according to another embodiment of the present specification.

[0045] Referring to FIGS. 3 and 4, a footplate-type detection system according to one embodiment of the present specification may include a sensing unit (100) and a control unit (200). The footplate-type detection system may further include an external system (300).

[0046] The sensing unit (100) may include at least one sensor module (110A). In a preferred embodiment, the sensing unit (100) may include at least two first sensor modules (110A) and second sensor modules (110B). By including a plurality of sensor modules (110A, 110B), replacement may be facilitated if any one of the sensor modules fails. Additionally, there is an advantage that the load detection area (Active Area) can be expanded. More preferably, the sensing unit (100) may include a first sensor module (110A), a second sensor module (110B), and a third sensor module (110C).

[0047] The number of sensor modules can be determined by considering the size of the one-way section where the sensing unit (100) is to be placed, the size of the door that opens when the electric train arrives, etc.

[0048] The first sensor module (110A) may include a first output terminal (111A) and a second output terminal (112A). The second sensor module (110B) may include a first output terminal (111B) and a second output terminal (112B). The third sensor module (110C) may include a first output terminal (111C) and a second output terminal (112C). Each sensor module (110A, 110B, 110C) may output positive (+) and negative (-) signals from a sensed analog signal. The first output terminal (111A, 111B, 111C) may output a positive (+) signal transmitted from each sensor module (110A, 110B, 110C). The second output terminal (112A, 112B, 112C) can output a negative (-) signal transmitted from each sensor module (110A, 110B, 110C).

[0049] Positive (+) and negative (-) signals transmitted from the sensor modules (110A, 110B, 110C) can be input to the signal input unit (211) in series or in parallel. The first output terminal (111A, 111B, 111C) and the second output terminal (112A, 112B, 112C) can be electrically connected to the signal input unit (211).

[0050] Referring to FIG. 3, the control unit (200) may include a first signal input unit (211A), a second signal input unit (211B), and a third signal input unit (211C). Signals output from the first and second output terminals (111A, 112A) of the first sensor module (110A) may be input to the first signal input unit (211A), signals output from the first and second output terminals (111B, 112B) of the second sensor module (110B) may be input to the second signal input unit (211B), and signals output from the first and second output terminals (111C, 112C) of the third sensor module (110C) may be input to the third signal input unit (211C). Positive (+) and negative (-) signals transmitted from sensor modules (110A, 110B, 110C) can be input serially to a signal input unit (211). In this case, each of the signals input serially to the first to third signal input units (211A, 211B, 211C) can be input to the first to third signal amplification units (212A, 212B, 212C) and amplified. In one embodiment, the signal input unit (211) can be expanded to 12 channels or more, in addition to the three channels described above. Furthermore, the corresponding signal amplification unit (212) can also be expanded to 12 channels or more. As it can be extended to more than 12 channels, it can be customized to the channel desired by the user, and accordingly, the size of the sensing unit (100) can be appropriately adjusted, so the sensing unit (100) according to the present specification can be placed on platforms having different end sizes.

[0051] Referring to FIG. 4, the control unit (200) may include a single integrated signal input unit (211). A signal output from the first output terminal (111A) of the first sensor module (110A), a signal output from the first output terminal (111B) of the second sensor module (110B), and a signal output from the first output terminal (111C) of the third sensor module (110C) may be integrated into a single wire and input to the signal input unit (211). A signal output from the second output terminal (112A) of the first sensor module (110A), a signal output from the second output terminal (112B) of the second sensor module (110B), and a signal output from the second output terminal (112C) of the third sensor module (110C) may be integrated into a single wire and input to the signal input unit (211). Positive (+) and negative (-) signals transmitted from sensor modules (110A, 110B, 110C) can be input in parallel to a signal input unit (211). In this case, each of the positive (+) and negative (-) signals input in parallel to the first to third signal input units (211A, 211B, 211C) can be input to a signal amplification unit (212) and amplified.

[0052] The control unit (200) may include a signal input unit (211), a signal amplifier unit (212), a control unit (MCU), an output unit (220), and a power input unit (250). The control unit (200) may further include an adjustment unit (230) and a recognition signal generation unit (240).

[0053] As described above, positive (+) and negative (-) signals output from the sensor module (110) can be input to the signal input section (211).

[0054] The signal amplification unit (212) can amplify the input signals as described above. The signal amplification unit (212) can be electrically connected to the signal input unit (211).

[0055] The signals detected by the sensing unit (100) may be in an analog form, such as current, voltage, and / or impedance. The numerical values ​​of these detected analog signals may be measured in relatively small units compared to the numerical values ​​typically used in a control unit (MCU), considering the sensitivity of the sensor module (110). The signal amplification unit (212) may amplify the difference between the input values ​​to facilitate the calculation and / or judgment of the detected small numerical values.

[0056] For example, the signal amplification unit (212) may include an amplification circuit. The amplification circuit may be a circuit capable of increasing the signal amplitude or current amount, etc. For example, the amplification circuit may include an operational amplifier, a differential amplifier circuit, a source follower circuit, a buffer circuit, a signal generation circuit, a memory circuit, a control circuit, etc.

[0057] The control unit (MCU) can convert the signals received from the signal amplifier (212) into digital signals and make a determination regarding a preset value desired by the user. The control unit (MCU) can be electrically connected to the signal amplifier (212).

[0058] The control unit (MCU) may include an Analog to Digital Converter (ADC) (213) and a processing unit (214). The processing unit (214) may include a CPU core, a power management unit, a power gate, a timer, a PLL, a non-volatile memory, a power circuit, and an interface element. In one embodiment, the control unit (MCU) may be a microcontroller unit.

[0059] A PLL can generate a clock signal and output it to internal circuits such as CPU cores and timers. CPU cores and timers may have functions capable of processing using the clock signal. A power management unit can control the power voltage supply to the control unit's internal circuits by controlling power gates. By controlling power gates, the PMU can also cut off the power supply to internal circuits that do not need to be operated.

[0060] An analog signal transmitted from a signal amplifier (212) can be converted into a digital signal by passing through an ADC (213). A semiconductor device, such as a sensor unit, can be connected to the ADC (213). A control unit (MCU) can process the signal input to the ADC and converted, and perform control to transmit the processing result to another wired / wireless module via a wired / wireless module. A control unit (MCU) can process another received signal from a wired / wireless module and perform control to transmit the processing result to yet another wired / wireless module.

[0061] In the output unit (220), a signal may be output to transmit a specific signal to another wired / wireless module. For example, a signal connected to the control unit (200) and transmitted to the host system (HS) may be output from the output unit (220). The output unit (220) may output a wired or wireless signal.

[0062] The power input unit (250) receives power from the power supply unit (PS) of the external system (300) and can supply power to the control unit to perform processing and control functions.

[0063] The adjustment unit (230) may include an Auto-Zero switch. The adjustment unit (230) may be used in conjunction with a sensing unit that detects weight and / or mass, such as a sensor used herein, to set the weight and / or mass being measured at any given time to a reference value. In one embodiment, the reference value may be set to 0. The adjustment unit (230) may operate automatically or manually. For example, a user may arbitrarily set the weight or mass currently being measured to a value of 0 by looking at a value displayed on a device that displays the current weight or mass measurement value.

[0064] In the platform-type detection system according to the present specification, since the sensing unit (100) is installed at one end of the platform, the load is generally not detected before the doors of the electric train open. However, while the electric train has not arrived and the load is generally not detected, a load having a weight / mass that is less than the operating standard value, such as dust, may be detected. For example, in the case of Seoul Subway Line 2 in South Korea, there are subway stations where the platform is located externally, so an object having a weight / mass that is less than the operating standard value from the outside may be detected by the sensing unit (100). If the detected value is not considered as a value of 0, the state in which the load is continuously detected may be maintained even after the electric train arrives, the doors open, and all passengers have boarded, and eventually, the electric train may depart with the screen door open. Due to the screen door being open, passengers may be able to access the track area even during times when there is no electric train, so safety is not ensured. Therefore, the accurate operating standard value can be determined by the control unit (230), enabling stable detection. In addition, malfunction of the system according to one embodiment may not occur.

[0065] The cognitive signal generating unit (240) can generate a cognitive signal for passengers who have a disability in a specific sense among the five human senses.

[0066] For example, when a passenger crosses a section, a load is detected by the sensing unit (100) and the screen door must remain open. A visual signal may be required to identify this open state. Passengers can anticipate that the screen door will not close based on the visual signal and safely pass through the doors of the train. The recognition signal may be a visual signal.

[0067] For example, when a visually impaired passenger crosses a section, such passenger has no other way to identify whether the screen door remains open. The perception signal generator (240) can generate a voice signal that allows the visually impaired passenger to identify that the door is open, thereby making the visually impaired passenger anticipate that the screen door will not close. The perception signal may be an auditory or voice signal.

[0068] Cognitive signals, such as voice or visual signals, can be generated by a cognitive signal generator (240) and transmitted to a host system (HS). The cognitive signal generator (240) and the host system (HS) can be electrically connected. Specifically, the host system (HS) may include a cognitive signal receiver (CSR). The cognitive signal receiver (CSR) can notify the platform that the screen door remains open to passengers crossing the platform based on the received visual signal. For example, the cognitive signal receiver (CSR) can transmit a signal that passengers can visually perceive to a display device or display device installed on the platform. For example, the cognitive signal receiver (CSR) can transmit a signal that passengers can auditorily perceive to an audio device installed on the platform.

[0069] Figure 5 is a diagram showing the non-loaded section and the periodic loaded section based on a day. Figure 6 is a diagram for explaining the non-loaded section and the periodic loaded section on the time axis.

[0070] Referring to FIGS. 5 and 6, the footplate-type detection system according to the present specification may include a No Load Section (NLS) and a Periodic Load Section (PLS) based on a 24-hour period. For convenience of explanation, among the hours from 00:00 to 24:00, the first time when the subway first arrives at the platform, the doors of the train and the screen doors open, and the passenger load can be applied is set as 06:00, and the last time when the passenger load is applied is set as 24:00.

[0071] The non-load period (NLS) of the footplate-type detection system according to the present specification may be from 24:00 (00:00 the next day), which is the last time the passenger load is applied on the previous day, to 06:00 the next day. The periodic load period (PLS) may be from 06:00 to 24:00.

[0072] The load / non-load section (NLS) may include a first deactivation section (S1) and a standby section (S2).

[0073] The periodic load section (PLS) may include N periodic load sections per day. For example, the periodic load section (PLS) may include a first periodic load section (PLS(1)), a second periodic load section (PLS(2)), the Nj periodic load section (PLS(Nj)), and the Nth periodic load section (PLS(N)). j may be an integer greater than or equal to 0 and less than or equal to N-1. The Nj periodic load section may include a load section (S3), an activation section (S4), a load-free section (S5), and a second deactivation section (S6).

[0074] The first and second deactivation sections (S1, S6) may be sections that are deactivated because the footplate-type detection system according to the embodiment of the present specification does not operate after passing through the load-non-load section (S5) following the activation section (S4). For example, in the first and second deactivation sections (S1, S6), the screen door may remain in a closed state (C).

[0075] The waiting section (S2) may be a section into which the system according to the embodiment of the present specification enters when the first deactivation section (S1) does not operate for a predetermined time during periods when electric trains do not operate, such as late night and early morning hours. The predetermined time may be appropriately adjusted according to the user. When entering the waiting section (S2), the system enters a low-power standby mode state, such as a sleep mode, which may reduce the power consumption of the footplate-type detection system. For example, the screen door may remain in a closed state (C) during the waiting section (S2).

[0076] The load loading section (S3) may be a section where the passenger's load is detected as the train's doors and screen doors open and the passenger's load is applied to the sensing unit. In one embodiment, the applied load may be pre-set according to the user's needs. For example, the pre-set value serving as a standard may be between 3kg and 20kg. If it is less than 3kg, the screen door may remain open not only for people who are the target of safety but also for other objects such as foreign substances, which ultimately leads to a problem where the safety of passengers inside the platform is not secured. If it is greater than 20kg, the screen door will close even if the load of passengers with relatively low weight, such as young children or infants, is detected, which leads to a problem where their safety is not secured.

[0077] The activation section (S4) may be a section in which the footplate-type detection system according to the present specification remains in an activated state as the passenger's load is continuously applied. In the activation section (S4), since the passenger's load is detected, the screen door must not close even if the doors of the electric train are closed. Therefore, in the activation section (S4), the screen door can remain in an open state (O) for a long time.

[0078] The load-free section (S5) may be a section where the train doors are closed and the screen doors are open, and the load of passengers is not continuously applied for a predetermined period of time. In one embodiment, the predetermined period may be adjusted to suit the needs of the user.

[0079] For example, the screen door can be kept open (O) during the load section (S3), the activation section (S4), and the load-free section (S5).

[0080] The load-free section (S5) of the Nth periodic load-load section (PLS(N)) can be specified around 24 hours according to the predetermined train timetable of the electric train. Subsequently, the footplate-type detection system according to the present specification can enter the first deactivation section (S1).

[0081] FIG. 7 is a plan view showing a sensing unit according to one embodiment of the present specification. Components having substantially the same function as the above-described embodiment are given the same reference numerals, and a repetitive description thereof is omitted.

[0082] Referring to FIG. 7, the sensing unit (100) may include sensor modules. For example, the sensing unit (100) may include a first sensor module (110A), a second sensor module (110B), and a third sensor module (110C) as a plurality of sensor modules, but is not limited thereto.

[0083] For each component included in the first to third sensor modules (110A, 110B, 110C), a reference numeral is assigned by changing only the drawing reference numeral (A, B, C) to distinguish it from other sensor modules, and below, only the first sensor module (110A) is described as an example.

[0084] The first sensor module (110A) may include a first output terminal (111A), a second output terminal (112A), a case top plate (120A), a case bottom plate (130A), and a sensor (140A).

[0085] The case top plate (120A) may have a shorter vertical length than the case bottom plate (130A) and may be positioned to overlap with the case bottom plate (130A). In one embodiment, the case top plate (120A) may have the same vertical length as the case bottom plate (130A).

[0086] The case top plate (120A) may have a width smaller than that of the case bottom plate (130A) and may be positioned to overlap with the case bottom plate (130A). In one embodiment, the case top plate (130A) may have the same width as the case bottom plate (130A).

[0087] The sensor (140A) may have a horizontal length longer than its vertical length. The horizontal length of the sensor (140A) may correspond to the horizontal length of one of the screen doors. For example, the horizontal length of the sensor (140A) may be positioned to correspond to the horizontal length of the first door (D1) of FIG. 2 described above. Accordingly, only one sensor may be positioned without the need for the sensor (140A) to be unnecessarily extended in the horizontal direction, and since there is no need to position multiple output terminals, the structure may be simplified and wiring may be organized easily. Additionally, the sensor module (110A) may be extended only in the vertical direction rather than the horizontal direction, making it easier to organize the wiring connected to the output terminals and enabling both series and parallel connections.

[0088] The sensor (140A) may include a tapered portion (141A) in which the vertical length becomes smaller in the direction in which the first and second output terminals (111A, 112A) are arranged. The case top plate (120A) may include a convex portion (121A) in which the vertical length becomes smaller in correspondence with the shape of the sensor (140A) including the tapered portion (141A).

[0089] In one embodiment, the shape of the case top plate (120A) may be formed to correspond to the sensor (140A), but is not limited thereto. The horizontal center axis of the sensor (140A) and the case top plate (120A) may be substantially the same, but is not limited thereto. For example, the position of the sensor may vary within the range where the case top plate (120A) overlaps with the case bottom plate (130A) in a planar direction.

[0090] The positions of the first output terminal (111A) and the second output terminal (112A) can be interchanged and are not limited to the positions shown in the drawing.

[0091] FIG. 8 is a plan view showing a sensing unit according to another embodiment of the present specification. Components having substantially the same function as the above-described embodiment are given the same reference numerals, and a repetitive description thereof is omitted.

[0092] Referring to FIG. 8, the sensor (140A) may have a curved shape with one end bent. The case bottom plate and top plate (130A, 120A) may be formed in a curved shape corresponding to the shape of the sensor (140A).

[0093] The first and second sensor modules, which are curved and included in the sensing unit, can be combined such that their respective curved portions correspond to the corners or vertices of the other sensor module. In this case, since the directions of the wiring coming from the first output terminal (111A) and the second output terminal (112A) are different, the signal input terminals for each sensor module are placed in different locations, and wiring arrangement can be facilitated when each of them needs to be connected in series to the signal input terminal.

[0094] In a sensing unit according to one embodiment, a portion where the sensitivity of the sensor (140A) is concentrated (left end and right end based on the horizontal direction) is created, thereby allowing for the distinction of the sensor's load detection area (Active Area). For example, the area where passengers board and alight at a subway platform may include a predetermined portion, such as a single-line queuing area. Since the platform may also include a signboard for this purpose, when a sensing unit such as the above-described embodiment is used, the detection rate of the portion where sensitivity needs to be concentrated can be improved.

[0095] FIG. 9 is a perspective view showing a sensor module according to one embodiment of the present specification. FIG. 10 is a cross-sectional view showing a sensor module according to one embodiment of the present specification. FIG. 10 is also a cross-sectional view taken along II' of FIG. 7.

[0096] Referring to FIGS. 9 and 10, the sensor module (110) may include a case bottom plate (130), a sensor (140), first and second adhesive layers (181, 182), an embossed layer (160), and a case top plate (120). The sensor module (110) may further include a third adhesive layer (183) and a footplate (170).

[0097] The bottom plate of the case (130) is a sensor (140) and embossed layer(160) may include an engraved portion (131) on which a sensor (140) can be placed. A sensor (140) may be placed in the engraved portion (131). The case bottom plate (130) may be formed of a hard material so that the mounted sensor (140) can withstand the load applied via the footrest (170). Considering that there is a subway station with a platform located outside, the case bottom plate (130) may be formed of a metal material so as to have durability against external environments such as external temperature, external humidity, and foreign matter at the bottom. In a preferred embodiment, the case bottom plate (130) may be formed of aluminum (Al).

[0098] The sensor (140) can be placed on the recessed portion (131) of the case bottom plate (130). A first adhesive layer (181) can be placed on the sensor (140). The first adhesive layer (181) can fix the embossed layer (160) and the sensor (140) in close contact with each other. Reference numeral 140P represents a orthogonally projected shape assuming the case where the sensor (140) is seated on the recessed portion (131).

[0099] On the first adhesive layer (181) embossed layer (160) can be placed. embossed layer (160) can improve the detection rate of the sensor (140) by ensuring that the load transmitted through the footrest (170) is better transmitted to the sensor (140). In addition, embossed layerThe sensor (140) can be protected by (160), thereby enhancing the durability of the sensing system according to one embodiment of the present specification. In one embodiment, the case bottom plate (130) includes an indentation (131), and a footrest (170) is placed on a raised portion that protrudes relatively more than the indentation (131). Since the sensor (140) may not be placed to correspond exactly to the indentation (131), the load due to the weight of the passenger may be distributed and transmitted to the raised portion or the empty space within the indentation (131). By placing the raised layer (160), the load can be transmitted more effectively to the sensor (140). In one embodiment, the raised layer (160) may have a shape corresponding to the sensor (140). Specifically, the raised layer (160) may have a shape corresponding to the load sensing area of ​​the sensor (140). In order to improve the sensitivity or detection rate of the sensor (140), the load applied to the case top plate (120) corresponding to the relatively wide recessed portion (131) can be concentrated and transmitted to the raised layer (160). The raised layer (160) may also be referred to as the first raised portion (160) in the sensor module (110) according to the embodiment.

[0100] In one embodiment, the embossed layer (160) may be formed from a soft material or a hard material. Preferably, the embossed layer (160) may be formed from a soft material. More preferably, the embossed layer (160) may be formed using polyurethane (PU). To mention trademarks, it may be formed using commercially available Poron tape.

[0101] A case top plate (120) may be placed on the embossed layer (160). The case top plate (120) may cover the entire intaglio portion (131) to protect the sensing portion, including the sensor (140) and the embossed layer (160), from the external environment. The case top plate (120) may include an embossed portion (125) protruding downwards from the sensor module (110) on which the sensor (140) is placed. The embossed portion (125) may also be referred to as a second embossed portion (125). The sensor module (110) according to the present specification may improve the detection rate of the sensor (140) by including the first and second embossed portions (160, 125). The second embossed portion (125) may have a shape corresponding to the shape of the sensor (140) for reasons similar to the first embossed portion (160) described above. In one embodiment, referring to the operating principle of the sensor (140) as described below, the second raised portion (125) may include a plurality of protrusions to correspond to the load sensing area of ​​the sensor (140). The second raised portion (125) may include a plurality of protrusions to correspond to the first and second patterns of the sensor (140).

[0102] As described above, since the sensor (140) may not be formed to correspond exactly to the engraved portion (131), an empty space may occur in the engraved portion (131) where the sensor (140) and components arranged to correspond to the shape of the sensor (140) are not present. Therefore, the case top plate (120) can fix the sensor (140), etc. to the engraved portion (131) through a second adhesive layer (182) placed in this empty space. Although not illustrated, the second adhesive layer (182) may also be placed between the case top plate (120) and the embossed layer (160).

[0103] A first and second adhesive layer (181, 182) disposed on the case bottom plate (130) and the engraved portion (131) of the case bottom plate (130), a raised layer (160), and a third adhesive layer (183) disposed on the case top plate (120). The third adhesive layer (183) can fix the footplate (170) to the case bottom plate (130) and the top plate (120).

[0104] In a sensor module (110) used in a sensing system according to the present specification, a load may be applied to a footrest (170). The footrest (170) may include a footrest protrusion (171) for a visually impaired person.

[0105] FIG. 11 is a plan view showing a sensor according to one embodiment of the present specification. FIG. 12 and 13 are cross-sectional views showing a sensor according to one embodiment of the present specification. FIG. 14 is a cross-sectional view for explaining the operating principle of a sensor according to one embodiment of the present specification. FIG. 12 is also a cross-sectional view taken along I-I in FIG. 11. FIG. 13 is also a cross-sectional view taken along JJ in FIG. 11.

[0106] Referring to FIGS. 11 to 14, the sensor (140) may include a load-sensing area (A1) and a load-non-sensing area (A2).

[0107] A first adhesive layer (181) is placed on the load sensing area (A1) so that the embossed layer and the sensor (140) can be fixed in close contact with each other.

[0108] A first pattern (142) and a second pattern (143) may be disposed in the load sensing area (A1). The first and second patterns (142, 143) may be connected by a non-pattern layer (144) and disposed together as one layer. The first and second patterns (142, 143) may be formed of a conductive material. In the first and second patterns (142, 143), a change in current, voltage, or impedance due to an applied load may occur.

[0109] Each of the first and second patterns (142, 143) may include a plurality of first and second protrusions (142P, 143P) protruding toward each other. The first protrusion (142P) and the second protrusion (143P) may be arranged alternately intersecting each other in the longitudinal direction in which the sensor is placed. Between the first protrusion (142P) and the second protrusion (143P), a conductive film (145) may appear to be placed on the plane of the sensor (140).

[0110] Referring to the cross-sectional view, the sensor (140) may include an upper film (146), a lower film (147), and a fourth adhesive layer (184) disposed between them (146, 147). A conductive film (145) may be disposed on the lower film (147) in the space excluding the space where the fourth adhesive layer (184) is disposed to secure the upper and lower films (146, 147) to each other. The conductive film (145) may be formed by including at least one selected from the group consisting of carbon and silver (Ag). A first pattern (142) and a second pattern (143) may be disposed on the conductive film (145).

[0111] The first protrusion (142P) and the second protrusion (143P) may include first and second posts (142T, 143T) protruding in the direction of the thickness of the sensor (140). When an applied load is transmitted through the upper film (146), parts of the first and second patterns (142, 143) that are conductive may come into contact with the conductive film (145) by the first and second posts (142T, 143T) (see FIG. 14). Accordingly, a change in current, voltage, or impedance may occur, and the amount of such change is transmitted to the signal input unit through the first and second output terminals (111, 112) to which the first and second patterns (142, 143) are each connected, and the signal may be amplified and processed in a direction set by the user through a preset program in the control unit.

[0112] FIG. 15 is a plan view showing a case top plate according to one embodiment of the present specification.

[0113] Referring to FIG. 15, the case top plate (120) may include a plurality of second raised portions (125) protruding in the downward direction of the sensor module. As described above, sensing can occur when at least a portion of the first and second patterns (142, 143) are in contact with the conductive film (145) by the first and second pillars (142T, 143T) disposed on the first and second protrusions (142P, 143P) of the first and second patterns (142) and the second pattern (143), respectively. A load ultimately needs to be applied to the first and second protrusions (142P, 143P). To improve the sensitivity and detection rate of the sensing, the second raised portions (125) may have a shape corresponding to the load sensing area (A1). In one embodiment, the second raised portion (125) may be formed in multiple numbers to correspond to the shapes of the first and second protrusions (142P, 143P).

[0114] Figure 16 is a simulation table showing the sensitivity of the sensor according to the presence or absence of the raised portion.

[0115] Referring to FIG. 16, the first to third comparative examples represent the relative values ​​of signals detected by the control unit when a load is applied to specific locations of the sensor module without placing embossed portions on the top plate of the case. The applied loads in the first to third comparative examples are different from each other.

[0116] The first to third embodiments represent relative values ​​of signals detected by a control unit when a raised portion is placed on the top plate of a case and a load is applied to specific locations of a sensor module. The applied loads in the first to third embodiments are different from each other.

[0117] The applied load in the first comparative example and the first embodiment is the same. The applied load in the second comparative example and the second embodiment is the same. The applied load in the third comparative example and the third embodiment is the same.

[0118] Based on this, it is confirmed that when an embossed portion is placed on the top plate of the case, the detection of the amount of change is improved compared to when an embossed portion is not placed.

[0119] Although the embodiments of this specification have been described in more detail with reference to the attached drawings, the scope of the invention according to this specification is not necessarily limited to these embodiments and can be modified in various ways within the scope of the technical concept of this specification.

[0120] Accordingly, the embodiments disclosed in this specification are not intended to limit the technical concept of the scope of rights according to this specification, but are intended to illustrate it, and the scope of the technical concept of this specification is not limited by these embodiments.

[0121] Therefore, the embodiments described above should be understood as exemplary in all respects and not limiting.

[0122] The scope of protection of this specification shall be interpreted by the claims, and all technical ideas within an equivalent scope shall be interpreted as being included within the scope of rights of the invention according to this specification.

Claims

Claim 1 A footplate-type detection system comprising: a sensing unit (100) including at least one sensor module (110); and a control unit (200) for processing a signal sensed from the sensing unit (100), wherein the sensor module (110) includes: a case bottom plate (130) including an intaglio portion (131); a sensor (140) disposed on the intaglio portion (131); a first embossed portion (160) disposed on the sensor (140); and a second embossed portion (125) protruding in the direction in which the sensor (140) is disposed, and a case top plate (120) disposed on the first embossed portion (160), and wherein the control unit (200) includes a recognition signal generating unit (240) for generating a recognition signal. Claim 2 In claim 1, the recognition signal includes a visual signal, in a footplate-type detection system. Claim 3 In claim 1, the above-mentioned perception signal includes an auditory signal, a footplate-type detection system. Claim 4 A footplate-type detection system according to claim 1, further comprising a recognition signal receiving unit (CSR) that receives the recognition signal from the recognition signal generating unit (240). Claim 5 In claim 4, the above-mentioned recognition signal receiving unit (CSR) transmits a signal that passengers can visually recognize to a display device based on the received recognition signal, in a footrest-type detection system. Claim 6 In claim 4, the above-mentioned perception signal receiving unit (CSR) transmits a signal that passengers can audibly perceive to an audio device based on the received perception signal, in a footrest-type detection system.

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