JP2007319198A - Replacement time indicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a replacement time indicator for indicating an appropriate time to replace an adhesive mat. <P>SOLUTION: The replacement time indicator includes a sensor portion 120, a counter processor 102, a sound source portion 150, and a speaker 160. The sensor portion 120 detects the passage of an object within a range to be detected. The counter processor 102 stores the number of times of detection by the sensor portion 102 as a number of times of counting. When the number of times of counting exceeds a predetermined threshold, the sound source portion 150 outputs a sound signal for indicating that it is a replacement time, and the speaker 160 emits sound based on the sound signal. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a replacement time notification device, and more particularly, to a replacement time notification device for notifying the replacement time of an adhesive mat installed on the floor of a clean room entrance to remove dust on the back of footwear.

Conventionally, when entering a clean room, the dust on the back of the footwear that the person is wearing is brought into the clean room, and an adhesive mat is laid on the floor of the entrance to prevent the cleanliness in the clean room from being lowered. By attaching the dust attached to the back of the footwear to the adhesive mat, the dust is prevented from being brought into the clean room (see, for example, Patent Document 1).
JP-A-9-108169

  However, the conventional method of preventing dust from being brought into the clean room with an adhesive mat needs to be replaced because the adhesion force of the adhesive mat is reduced by the attached dust as it is used. In this case, the adhesive mat is checked and replaced if it is dirty, so it may not be replaced at an appropriate time, such as when a person in charge or a cleaning company overlooks it. In such a case, the adhesive mat with reduced adhesive strength is continuously used, and as a result, there is a problem that dust is brought into the clean room.

  This invention is made | formed in view of such a situation, The objective is to provide the replacement time alerting | reporting apparatus which can alert | report the appropriate replacement time of an adhesive mat.

  The present invention has been made to solve the above-described problems. The present invention provides a detection means for detecting that an object has passed through a detection range, and a count for holding the number of times detected by the detection means as a count number. And a notification means for notifying that it is the replacement time when the number of times of counting exceeds a predetermined threshold.

  Further, the present invention is the above-described replacement time notification device, in which an input unit that receives an input by a user operation, and when the input received by the input unit is a setting instruction, the predetermined threshold value is based on the setting instruction. And setting means for setting the value of.

  Further, the present invention is the above-described replacement time notification device, wherein when the input accepted by the input means is a reset instruction, the count number held by the counting means is set to 0 based on the reset instruction. A reset means is provided.

  In addition, the present invention is any one of the above-described replacement time notification devices, wherein the notification unit sounds a voice to notify that it is a replacement time, and the input received by the input unit is a voice selection instruction. In some cases, a voice setting unit is provided for setting a voice to be sounded by the notification unit based on the voice selection instruction.

  Further, the present invention is any one of the above-described replacement time notification devices, characterized in that a detection range in which the detection means detects passage of an object is variable.

  According to the present invention, the detection range of the detection means is set to an appropriate position so as to detect a person passing on the adhesive mat, and the number of persons that does not weaken the adhesive strength of the adhesive mat is set as a threshold value. The replacement time notification device of the invention can notify an appropriate replacement time of the adhesive mat.

  As shown in FIGS. 1 (a) and 1 (b), a person who enters the clean room 3 always passes, for example, near the entrance of the air shower room 4 so as not to bring the dust on the back of footwear such as shoes into the clean room 3. An adhesive mat 2 for removing dust attached to the back of footwear is installed on the floor or the like. The replacement time notification device 1 of the present embodiment is a wall surface in the vicinity of the adhesive mat 2 so that the detection range A1 is on the adhesive mat 2 on a wall surface having a height (about 1.3 m) that is easy for a person to operate. Installed. The replacement time notification device 1 counts the number of people passing over the adhesive mat 2, and when it reaches a predetermined number of people, it notifies the user that it is time to replace the adhesive mat 2 by voice.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2A is a schematic block diagram showing the configuration of the replacement time notification device 1 according to one embodiment of the present invention.
Reference numeral 100 denotes a CPU (Central Processing Unit) that controls the entire replacement time notification device 1, and as shown in FIG. 2B, an input determination processing unit 101, a counting processing unit 102, a reset processing unit 103, and a setting process. Unit 104 and voice selection processing unit 105.
A memory 110 includes an EEPROM (Electrically Erasable Programmable Read Only Memory) storing a program and data for operating the CPU 100 and a RAM (Random Access Memory) serving as a work memory when the CPU 100 operates. .

120 includes a reflection-type infrared sensor that detects the presence or absence of an object in the detection range by projecting a light beam and measuring the distance by the reflected light, and a detection signal when detecting the presence of an object in the detection range It is a sensor part (detection means) which outputs. The sensor unit 120 is attached to the casing of the replacement time notification device 1 so that the position of the detection range with respect to the replacement time notification device 1 can be changed to the left and right by rotating its direction to the left and right. In the present embodiment, the detection range is a range of about 4 cm wide up to a distance of about 70 cm from the sensor unit 120. The structure of the sensor unit 120 and the method of attaching it to the housing will be described later.
130 includes a MODE button BT1, a SET button BT2, a RESET button BT3, a △ button BT4, a △ button BT5, a △ button BT6, a △ button BT7, and a power switch BT8 shown in FIG. The input key part (input means).

Reference numeral 140 denotes a display unit that displays numbers up to four digits using a four-digit seven-segment LED display (hereinafter referred to as a display) D1 shown in FIG.
Reference numeral 150 denotes a sound source unit that outputs a sound signal of a designated sound type among the two sound types “1” and “2” for notifying the replacement time of the adhesive mat 2.
Reference numeral 160 denotes a loudspeaker that emits sound by the sound signal output from the sound source unit 150.
The sound source unit 150 and the speaker 160 function as notification means.

The input determination processing unit 101 accepts the operation content of the input key unit 130 by the user and the detection result of the sensor unit 120 as inputs, and the count processing unit 102, the reset processing unit 103, and the setting processing unit 104 according to the input content. The voice selection processing unit 105 is operated.
The count processing unit (counting unit) 102 includes a counter, and each time it is notified from the input determination processing unit 101 that has received the detection signal from the sensor unit 120, it is considered that a person has passed, and the counter value (count count) Is incremented by 1 and the value of the counter is displayed on the display unit 140. In addition, when the counter value exceeds a predetermined threshold, the count processing unit 102 instructs the sound source unit 150 to output an audio signal of the set audio type.
When notified from the input determination processing unit 101 that the RESET button BT3 of the input key unit 130 has been pressed, the reset processing unit (reset means) 103 sets the counter value of the counting processing unit 102 to zero. .

  When the setting processing unit (setting unit) 104 is notified of the start of operation from the input determination processing unit 101 that has received that the MODE button BT1 of the input key unit 130 has been pressed once, the threshold value used in the counting processing unit 102 Is displayed on the display unit 140. When the △ button BT4 is pressed, the setting processing unit 104 increases the display value at the 1000's place by one, when the △ button BT5 is pressed, the display value at the 100's place is increased by 1, and when the △ button BT6 is pressed, the tenth place. When the △ button BT7 is pressed, the display value at the 1's place is increased by 1. When the SET button BT2 is pressed, the value displayed on the display unit 140 is used as the threshold used by the count processing unit 102. Set. When any of the △ button BT4 to △ button BT7 is pressed, if the corresponding display value is “9”, the display value is set to “0” instead of increasing by one. .

  When the voice selection processing unit (sound setting unit) 105 is notified of the start of operation from the input determination processing unit 101 that has received that the MODE button BT1 of the input key unit 130 has been pressed twice, the set voice type is set. Is displayed at the 1's place on the display unit 140, and the display value is alternately switched to "1" or "2" every time the △ button BT4 is pressed. When the SET button BT2 is pressed, the display value is set as the voice type.

Next, the structure of the sensor unit 120 and how to attach it to the housing will be described with reference to FIGS. FIG. 3 is an exploded perspective view showing members constituting the sensor unit 120. FIG. 4 is a perspective view of the sensor unit 120, and FIG. 5 is a perspective view of the replacement time notification device 1.
The sensor unit 120 includes a cylindrical support body 30. A cutout 32 is formed on the peripheral surface of the support body 30 over the entire length of the support body 30 in the height direction. A rectangular opening 31 is formed at a position facing the notch 32 on the peripheral surface of the support main body 30. Further, a notch 33 is formed at the lower end of the support body 30 and below the opening 31. The width dimension of the notch 33 is set to be the same as the width dimension d3 of the opening 31.

The support body 30 is supported by a lid 40 and a base 50 formed in a flat plate shape. That is, the lower end of the support main body 30 is fixed to the upper surface of the base member 50, and the lid 40 is fixed to the upper end of the support main body 30. Arc portions 41 and 51 that follow the outer periphery of the support main body portion 30 are formed in the lid portion 40 and the base material portion 50.
In addition, a cylindrical rotation support portion 20 having a diameter smaller than that of the support body portion 30 is disposed inside the support body portion 30. An opening 21 having an opening area smaller than the opening area of the opening 31 is formed on the peripheral surface of the rotation support unit 20. The width d2 of the opening 21 is smaller than the width d3 of the opening 31. In addition, a columnar protrusion 22 that protrudes outward in the radial direction is provided on the peripheral surface of the lower end portion of the rotation support portion 20 and below the opening portion 21. When the rotation support portion 20 is disposed in the support main body portion 30, the protruding portion 22 protrudes outward of the support main body portion 30 through the notch 33. Further, the rotation support unit 20 is placed on the upper surface of the base material unit 50. Therefore, the rotation support unit 20 is configured to rotate inside the support body 30 with the axis A of the rotation support unit 20 as the rotation center.

  A rectangular parallelepiped reflective infrared sensor 10 is fixed inside the rotation support portion 20. A rectangular sensor window 11 for projecting a light beam and receiving reflected light is provided on the front surface of the reflective infrared sensor 10. The reflective infrared sensor 10 is fixed in the rotation support portion 20 so that the sensor window 11 coincides with the opening 21. The width dimension d1 of the sensor window 11 is set to be the same as the width dimension d2 of the opening 21. That is, the width dimension d1 of the sensor window 11 is set to be smaller than the width dimension d3 of the opening 31.

Under such a configuration, by operating the protruding portion 22 protruding through the notch 33, the rotation support portion 20 is rotated about the axis A as the center of rotation. And by rotating the rotation support part 20, the reflective infrared sensor 10 fixed in the rotation support part 20 is also rotated. When the rotation support unit 20 is rotated about the axis A and the rotation support unit 20 is disposed at a predetermined rotation position, the sensor window 11 is exposed to the outside through the opening 21 and the opening 31. It is like that.
As a result, the sensor window 11 can move within the range of the width dimension d3 of the opening 31. That is, the detection range can be changed by changing the direction of the light beam projected from the sensor window 11 and the direction of the light receiving part of the reflected light to the left and right.

Thus, as shown in FIG. 1, there is a door on the front side of the adhesive mat 2, there is no wall on the side, and even when the replacement time notification device 1 is installed on the wall such as the side of the door, the rotation support unit 20 is appropriately The number of people passing over the adhesive mat 2 can be counted by making the detection range A1 above the adhesive mat 2 in a proper direction. Therefore, it is possible to notify the replacement time for the adhesive mat installed at such a position.
Therefore, the replacement time notification device can be installed and used even in a place that is not designed on the assumption that the replacement time notification device is installed in advance.

Next, the operation of the replacement time notification device 1 of the present embodiment will be described with reference to the flowchart of FIG.
First, when the power switch BT8 is turned on, the power is turned on, and the operation is started, the count processing unit 102 of the CPU 100 acquires a counter value and a threshold value stored in a predetermined area of the EEPROM of the memory 110 to acquire the counter value of the memory 110. The counter value is written on a predetermined area of the RAM and displayed on the display unit D1 of the display unit 140 (S1). Next, the input determination processing unit 101 enters a normal monitoring state in which it waits for an input from the sensor unit 120 or the input key unit 130 (S2).

  Here, when a person passes through the detection range of the sensor unit 120, that is, when a detection signal is input from the sensor unit 120, the input determination processing unit 101 counts that the detection signal has been input. Notification to the unit 102. When receiving the notification from the input determination processing unit 101, the count processing unit 102 increases the counter value by 1 (S3), and writes the value in a predetermined area of the RAM of the memory 110 (S4). The count processing unit 102 compares the counter value with the threshold value (S5), and when the counter value exceeds the threshold value, the sound processing unit 102 outputs a sound signal of the set sound type (for example, “1”). Notification to the unit 150. The sound source unit 150 outputs an audio signal of the instructed audio type “1” to the speaker 160, and the speaker 160 receives the audio signal and informs that it is time to replace (for example, “change the adhesive mat” Please ") (S6). Next, the count processing unit 102 displays the updated counter value on the display device D1 of the display unit 140 (S20), returns to step S2, and the input determination processing unit 101 receives the signal from the sensor unit 120 or the input key unit 130. The normal monitoring state, which is a state of waiting for the input, is resumed (S2).

  When the counter value does not exceed the threshold value in step S5, the process proceeds to step S20, and the count processing unit 102 displays the updated counter value on the display unit D1 of the display unit 140 (S20). Returning to step S2, the input determination processing unit 101 returns to the normal monitoring state in which the input from the sensor unit 120 or the input key unit 130 is waited (S2).

  On the other hand, when the user who has heard the voice indicating that it is time to replace replaces the adhesive mat and presses the RESET button BT3 of the input key unit 130, the input determination processing unit 101 accepts that the RESET button BT3 has been pressed. (S7). The input determination processing unit 101 notifies the reset processing unit 103 of this. Upon receiving the notification from the input determination processing unit 101, the reset processing unit 103 sets the counter value of the counting processing unit 102 to “0” (S8) and writes it in a predetermined area of the RAM of the memory 110 (S9). Next, the count processing unit 102 reads the counter value “0” written in step S9 from a predetermined area of the RAM of the memory 110 and displays it on the display D1 of the display unit 140 (S20). Returning to step S2, the input determination processing unit 101 returns to the normal monitoring state in which the input from the sensor unit 120 or the input key unit 130 is waited (S2).

  Here, when the user presses the MODE button BT1 of the input key unit 130 only once in order to set the threshold value, the input determination processing unit 101 accepts that the MODE button BT1 is pressed (S10). The input determination processing unit 101 notifies the setting processing unit 104 of this. Upon receiving the notification from the input determination processing unit 101, the setting processing unit 104 reads a threshold value from a predetermined area of the RAM of the memory 110 and displays it on the display device D1 of the display unit 140 (S11). When the user operates the △ button BT4 to the △ button BT7 of the input key unit 130, the setting processing unit 104 receiving the change changes the value displayed on the display D1 according to the operation content (S12). As a result of operating the △ button BT7 from the △ button BT4, a numerical value “1000” that the user desires as a threshold value is displayed on the display device D1, and when the user presses the SET button BT2, the setting processing unit 104 that receives it displays , “1000” is set as a threshold value and written in a predetermined area of the RAM of the memory 110 (S13). Next, the count processing unit 102 reads a counter value (here, “0” written in step S9) from a predetermined area of the RAM of the memory 110 and displays it on the display D1 of the display unit 140 (S20). ), The process returns to step S2, and the input determination processing unit 101 returns to the normal monitoring state in which the input from the sensor unit 120 or the input key unit 130 is waited (S2).

  Here, when the user presses the MODE button BT1 of the input key unit 130 twice in order to change the voice message to be notified, the input determination processing unit 101 accepts that the MODE button BT1 is pressed twice (S10). , S15). The input determination processing unit 101 notifies the voice selection processing unit 105 of this. The voice selection processing unit 105 reads the voice type (here, “1” as described in step S6) from a predetermined area of the RAM of the memory 110, and displays it on the display D1 of the display unit 140 (S16). When the user operates the △ button BT7 of the input key unit 130, the voice selection processing unit 105 alternately displays “1” and “2” on the display D1 each time it is received (S17). As a result, for example, “2” that the user desires as a threshold is displayed on the display D1, and when the user presses the SET button BT2, the voice selection processing unit 105 that has received it sets “2” as the voice type. Then, the data is written in a predetermined area of the RAM of the memory 110 (S18). Next, the count processing unit 102 reads a counter value (here, “0” written in step S9) from a predetermined area of the RAM of the memory 110 and displays it on the display D1 of the display unit 140 (S20). ), The process returns to step S2, and the input determination processing unit 101 returns to the normal monitoring state in which the input from the sensor unit 120 or the input key unit 130 is waited (S2).

  Thereafter, steps S2, S3, S4, S5, and S20 are repeated on the adhesive mat, that is, every time a person passes through the detection range of the sensor unit 120, and the counter value of the count processing unit 102 is counted up. The counter value is displayed on the display unit D1 of the display unit 140.

  When the user turns off the power switch BT8 of the input key unit 130 in order to stop the operation of the replacement time notification device 1 at the end of working hours or the like, the input determination processing unit 101 accepts this (S21). The counter value and threshold value of the processing unit 102 are read from a predetermined area of the RAM of the memory 110, and these values are written to a predetermined area of the EEPROM of the memory 110 (S22).

Thus, when the operation is started again by turning on the power switch BT8, the counter value and the threshold value written in the EEPROM in step S1 are read and the operation is started. You can resume.
If the counter value exceeds the threshold value in step S5, the process proceeds to step S6 to sound a voice indicating that it is time for replacement. For this reason, until the user replaces the adhesive mat and presses the RESET button BT3, a sound indicating that it is time for replacement is sounded every time a person passes, so the replacement of the adhesive mat is not forgotten.

  Note that the input determination processing unit 101, the counting processing unit 102, the reset processing unit 103, the setting processing unit 104, and the voice selection processing unit 105 in FIG. 2B may be realized by dedicated hardware. These processing units are constituted by a memory and a CPU (central processing unit), and the functions are realized by loading a program for realizing the functions of these processing units into the memory and executing them. Also good.

  Further, in the present embodiment, the sound signal output from the sound source unit 150 has been described as being caused to function as a notification unit by causing the speaker 160 to ring, but by providing a light emitting unit such as an LED and lighting it. , It may function as a notification means.

  In the present embodiment, an external contact input unit may be provided instead of the sensor unit 120, and a sensor device having the same function as the sensor unit 120 may be connected to the external contact input unit. In addition, the sensor unit 120 and the external contact input unit may be provided, and the count processing unit 102 may be set based on a detection signal of the sensor unit 120 or the external contact input unit.

  In the present embodiment, an external contact output unit is provided in place of the sound source unit 150 and the speaker 160, and the external contact output unit has the same function as the combination of the sound source unit 150 and the speaker 160. A notification device may be connected. Further, the sound source unit 150, the speaker 160, and an external contact output unit may be provided, and the count processing unit 102 may be configured to set which of the sound source unit 150 and the external contact output unit is instructed to output the audio signal.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes a design and the like within the scope not departing from the gist of the present invention.

  The present invention is suitable for use in a replacement time notification device for notifying the replacement time of an adhesive mat installed on the floor of a clean room entrance in order to remove dust on the back of footwear, but is not limited thereto.

It is a figure which shows the installation condition of the replacement time alerting device 1 by one Embodiment of this invention. It is a block diagram which shows schematic structure of the replacement time alerting | reporting apparatus 1 in the embodiment. It is the disassembled perspective view which showed the member which comprises the sensor part 120 in the embodiment. It is a perspective view of the sensor part 120 in the embodiment. It is a perspective view of the exchange time alerting device 1 in the same embodiment. It is a flowchart explaining operation | movement of the replacement time alerting | reporting apparatus 1 in the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Replacement time notification apparatus 2 ... Adhesive mat 3 ... Clean room 4 ... Air shower room 10 ... Reflection type infrared sensor 11 ... Sensor window 20 ... Rotation support part 21 ... Opening part 22 ... Protrusion part 30 ... Supporting body part 31 ... Opening part 32 ... Notch 33 ... Notch 40 ... Lid part 41 ... Arc part 50 ... Base material part 51 ... Arc part 100 ... CPU
101 ... Input determination processing unit 102 ... Counting processing unit (counting means)
103. Reset processing unit (reset means)
104: Setting processing unit (setting means)
105 ... Voice selection processing section (voice setting means)
110: Memory 120 ... Sensor unit (detection means)
130 ... Input key section (input means)
140: Display unit 150 ... Sound source unit (notification means)
160 ... Speaker (notification means)

Claims (5)

Detection means for detecting that an object has passed through the detection range;
Counting means for holding the number of times detected by the detecting means as a counting number;
An exchange time notification device comprising: notification means for notifying that it is a replacement time when the number of counts exceeds a predetermined threshold. An input means for receiving input by a user operation;
The replacement time notification device according to claim 1, further comprising: a setting unit that sets the predetermined threshold value based on the setting instruction when the input received by the input unit is a setting instruction.   3. The exchange according to claim 2, further comprising: a reset unit configured to set the number of counts held by the counting unit to 0 based on the reset instruction when the input received by the input unit is a reset instruction. Time notification device. The informing means sounds a sound to inform that it is a replacement time,
4. The voice setting unit according to claim 1, further comprising: a voice setting unit configured to set a voice to be sounded by the notification unit based on the voice selection instruction when the input received by the input unit is a voice selection command. The replacement time notification device according to any one of the items. 5. The replacement time notification device according to claim 1, wherein a detection range in which the detection unit detects passage of an object is variable.

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