Cleaning system

Abstract

The light-receiving window of the fire detector will be cleaned according to its degree of contamination. [Solution] The cleaning system includes an acquisition means for acquiring the degree of contamination of the light-receiving window of a fire detector, and a cleaning control means for determining a cleaning device and cleaning the light-receiving window based on the degree of contamination acquired by the acquisition means, or determining the number of cleaning cycles and cleaning the light-receiving window with the cleaning device the determined number of times.

Description

Technical Field

[0001] The present invention relates to a cleaning system.

Background Art

[0002] Patent Document 1 describes a problem of "eliminating the dirt on the light-receiving glass window by using the water resources and installation space of the fire hydrant device provided with a fire detector, and making it possible to eliminate traffic restrictions and work burdens due to regular cleaning" (see the abstract). Further, Patent Document 1 describes, as a solution to this problem, "arranging a fire detector 60 for detecting a fire in the left or right monitoring area by observing the radiation emitted from the combustion flame incident through a pair of light-receiving glass windows 62 arranged on the left and right fronts on the front surface of the housing 12 of the fire hydrant device 10. A transparent detector cover 64 is arranged to cover the outside of the front surface of the fire detector 60, and pressurized water is injected from the water injection nozzle 66 of the cleaning mechanism onto the cover surface of the detector cover 64 for cleaning, and the cover surface of the detector cover 64 is wiped by a blade provided on the wiper arm of the wiper mechanism 70 to remove dirt." (see the abstract).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the fire hydrant device 10 described in Patent Document 1 above, the dirt on the cover surface of the detector cover 64 can be removed. However, in this fire hydrant device 10, the dirt damage rate of the cover surface is not considered when removing the dirt on the cover surface. The present invention has been made in view of such circumstances, and an object thereof is to clean the light-receiving window of a fire detector according to the dirt damage rate of the light-receiving window.

Means for Solving the Problems

[0005] To solve the above problems, the cleaning system according to the present invention comprises an acquisition means for acquiring the degree of contamination of the light-receiving window of a fire detector, and a cleaning control means for determining a cleaning device and cleaning the light-receiving window based on the degree of contamination acquired by the acquisition means, or determining the number of cleaning cycles and cleaning the light-receiving window with the cleaning device the number of times determined. [Effects of the Invention]

[0006] According to the present invention, the light-receiving window of a fire detector can be cleaned according to the degree of contamination of the light-receiving window. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 shows an example of the cleaning system 100. [Figure 2] Figure 2 shows an example of the appearance of the fire detector 101. [Figure 3] Figure 3 shows an example of the appearance of the fire detector 101 with the front plate 203 removed. [Figure 4] Figure 4 shows an example of the configuration of the dedicated box 102. [Figure 5] Figure 5 shows an example of the cleaning control 500. [Modes for carrying out the invention]

[0008] 1. Examples An embodiment of the present invention will be described with reference to the drawings. 1-1. Overview First, an overview of one embodiment of the present invention will be described. Traditionally, fire detectors installed in tunnels are equipped with light-receiving windows. These windows allow the fire detector to constantly monitor the radiant energy emitted by surrounding heat sources, and specifically identify the energy of a fire.

[0009] Equipment inside tunnels is exposed to exhaust fumes and dust kicked up by passing vehicles, making it an environment highly susceptible to contamination. The light-receiving windows of fire detectors also become contaminated, requiring regular cleaning. However, this places a significant burden on maintenance and inspection companies. Therefore, an automated cleaning function is needed.

[0010] In this embodiment, the fire detector periodically shines test light from a test lamp onto the light-receiving window from above to self-check the contamination rate. Conventionally, the contamination rate has been used for two purposes: "automatic adjustment of the detector's sensitivity" and "contamination alarm to the fire prevention receiving panel when a threshold is exceeded." In this embodiment, a cleaning wiper and an air duster are attached to the fire detector, and these external cleaning devices operate according to the contamination rate to clean the light-receiving window.

[0011] In this embodiment, a dedicated box is installed alongside the fire detector box located on the tunnel wall to house the control board. The control board is connected to the transmission line of the fire detector and periodically collects contamination rate data. The contamination rate is provided by the fire detector or the fire prevention receiving panel. If the collected contamination rate exceeds a threshold, the control board controls the operation of external cleaning equipment. The control board determines the type and frequency of cleaning equipment to be operated according to the contamination rate.

[0012] Because power supply is limited within tunnels, securing power is a challenge when installing mechanically operating equipment such as external cleaning devices. This challenge is solved by making the tunnel floor a piezoelectric floor and converting and storing the energy from passing vehicles as a power source. A dedicated box is installed next to the fire detector box to house the battery.

[0013] 1-2. Structure Next, the configuration of this embodiment will be described. Figure 1 shows an example of a cleaning system 100 according to this embodiment. The cleaning system 100 shown in the figure comprises a fire detector 101, a dedicated box 102, and a piezoelectric plate 103.

[0014] The fire detector 101 is a binocular flame detector. The fire detector 101 is installed on the wall surface of the tunnel 104. The dedicated box 102 is a box that houses a substrate for controlling the cleaning device of the fire detector 101. The dedicated box 102 is installed on the wall surface of the tunnel 104, near the fire detector 101. The piezoelectric plate 103 is a plate-shaped piezoelectric body and is installed on the road in the tunnel 104. The piezoelectric plate 103 converts the energy of the pressure generated when a vehicle passes over it into electrical energy. The piezoelectric plate 103 is connected to the dedicated box 102 by a charging cable 105.

[0015] Figure 2 is a front view showing an example of the appearance of the fire detector 101. The fire detector 101 shown in the figure includes a storage box 201, a detector body 202, a front plate 203, a cleaning wiper 204, and an air duster 205.

[0016] The storage box 201 is a rectangular parallelepiped box with an open front. The back plate of the storage box 201 is fixed to the wall surface of the tunnel 104 with screws or the like.

[0017] The detector body 202 is housed in the storage box 201. The housing of the detector body 202 is fixed to the back plate of the storage box 201 with screws or the like so that the front side thereof faces the front opening of the storage box 201. The detector body 202 has an elliptical light receiving window 206 and two test lights 207. The light receiving window 206 is made of glass or silicon.

[0018] The front plate 203 is a rectangular plate body and is fixed to the storage box 201 with screws or the like so as to cover the front opening of the storage box 201. The front plate 203 has an elliptical opening 208 so that the light receiving window 206 of the detector body 202 is exposed to the outside. The front plate 203 also has two circular openings 209 so that the two test lights 207 of the detector body 202 are exposed to the outside.

[0019] The cleaning wiper 204 is a cleaning device for cleaning the light-receiving window 206 of the detector body 202. The cleaning wiper 204 comprises a wiper motor 210 (not shown), a wiper arm 211, and a wiper blade 212.

[0020] The wiper motor 210 is housed in a storage box 201. The rotating shaft of the wiper motor 210 is exposed to the outside through a through hole (not shown) formed in the lower center of the front plate 203. The wiper arm 211 has one end connected to the rotation axis of the wiper motor 210 and the other end connected to the wiper blade 212. The wiper arm 211 extends approximately parallel to the front plate 203.

[0021] When the wiper motor 210 is driven, it reverses the direction of rotation of the rotation axis within a predetermined range of rotation angles. As a result, the wiper arm 211 swings from side to side around the rotation axis, as shown by the arrows in the figure. Consequently, the wiper blade 212 also swings from side to side, thereby wiping the surface of the light-receiving window 206.

[0022] Next, the air duster 205 is a cleaning device for cleaning the light-receiving window 206 of the detector body 202. The air duster 205 is equipped with a gas cartridge 213 (not shown) and gas injection nozzles 214A and 214B.

[0023] The gas cartridge 213 is a container filled with compressed gas. The gas cartridge 213 is housed in the storage box 201. The gas injection nozzle 214A is exposed to the outside through a through-hole (not shown) formed in the upper left of the front plate 203, and its tip is directed toward the light-receiving window 206 (in particular the left portion that covers the left flame detection unit 301 (see Figure 3)). The rear end of the gas injection nozzle 214A is connected to the gas cartridge 213 via an air tube (not shown). A solenoid valve 215A (not shown) is interposed in the middle of the air tube.

[0024] The solenoid valve 215A is normally in a closed state, and when controlled to open, it sends compressed gas sealed in the gas cartridge 213 to the gas injection nozzle 214A. As a result, compressed gas is injected from the gas injection nozzle 214A towards the light-receiving window 206 (especially the left side), removing dust adhering to the light-receiving window 206.

[0025] The gas injection nozzle 214B is exposed to the outside through a through-hole (not shown) formed in the upper right of the front plate 203, and its tip is directed toward the light-receiving window 206 (in particular the right portion that covers the right flame detection unit 302 (see Figure 3)). The rear end of the gas injection nozzle 214B is connected to the gas cartridge 213 via an air tube (not shown). A solenoid valve 215B (not shown) is interposed in the middle of the air tube.

[0026] The solenoid valve 215B is normally in a closed state, and when opened, it sends compressed gas sealed in the gas cartridge 213 to the gas injection nozzle 214B. As a result, compressed gas is injected from the gas injection nozzle 214B towards the light-receiving window 206 (especially the right side), removing dust adhering to the light-receiving window 206.

[0027] Hereafter, gas injection nozzles 214A and 214B will be collectively referred to as "gas injection nozzles 214," and solenoid valves 215A and 215B will be collectively referred to as "solenoid valves 215." Alternatively, an air compressor may be used as the source of compressed gas instead of the gas cartridge 213.

[0028] Figure 3 is a front view showing an example of the appearance of the fire detector 101 with the front plate 203 removed. For the sake of clarity, the cleaning wiper 204 and air duster 205 are omitted in the example shown in this figure.

[0029] The detector body 202 shown in the figure includes a left-side flame detection unit 301 that monitors the left detection area and a right-side flame detection unit 302 that monitors the right detection area. The left-side flame detection unit 301 and the right-side flame detection unit 302 are covered by a light-receiving window 206 and isolated from the external environment.

[0030] The left flame detection unit 301 and the right flame detection unit 302 are each equipped with a solar cell as an example of a short-wavelength detection element and a pyroelectric element as an example of a long-wavelength detection element (neither of which are shown in the figure). These fire detection elements are used to determine if a fire has occurred.

[0031] The detector unit 202 further includes a control microcontroller 303 and a transmit / receive circuit 304 (neither of which are shown in the figure). The control microcontroller 303 performs fire detection for both the left flame detection unit 301 and the right flame detection unit 302. An example of the conditions used for fire detection is shown below.

[0032] (Condition 1) The amplitude value of the signal output from the pyroelectric element is greater than or equal to the threshold T1. (Condition 2) The amplitude value of the signal output from the solar cell is greater than or equal to the threshold T2. (Condition 3) The ratio of the amplitude value of the signal output from the pyroelectric element to the amplitude value of the signal output from the solar cell is greater than or equal to threshold T3 and less than or equal to threshold T4 (however, T3 <T4)である。 These conditions are merely examples and may be modified as needed.

[0033] The control microcontroller 303 determines that a flame has occurred if all of the above conditions 1 to 3 have been met a predetermined number of times or more within a predetermined period of time in the past (for example, 10 seconds). When the control microcontroller 303 determines that a flame has occurred, it transmits a flame detection signal to the disaster prevention receiving panel (not shown) via the transmitting / receiving circuit 304.

[0034] The control microcontroller 303 also periodically performs contamination tests. In the contamination test, the test lamp 207 is illuminated, and the light emitted is received by the solar cell via the light receiving window 206. Contamination of the light receiving window 206 is then detected based on the output signal of the solar cell.

[0035] In this process, the optical attenuation rate DL (=1-V / V0) of the light-receiving window 206 is calculated using the initial output signal V0 of the solar cell when the light-receiving window 206 is clean and the output signal V during the contamination test. The calculated optical attenuation rate DL is, in other words, the contamination rate. The control microcontroller 303 outputs the calculated contamination rate to the disaster prevention receiving panel and the dedicated box 102.

[0036] The contamination test is performed on both the left flame detection unit 301 and the right flame detection unit 302. The procedure for the contamination test performed on the left flame detection unit 301 is as follows. (1) The test lamp 207 is made to emit light, and the light emitted is received by the solar cell of the left flame detection unit 301 via the light receiving window 206 (left side portion). (2) Based on the output signal of the solar cell, contamination of the light receiving window 206 (left side) is detected. In this process, the optical attenuation rate DL (=1-V / V0) of the light-receiving window 206 (left side) is calculated using the initial output signal V0 of the solar cell when the light-receiving window 206 (left side) is clean and the output signal V during the contamination test.

[0037] The procedure for the contamination test performed on the right-side flame detection unit 302 is as follows: (1) The test lamp 207 is made to emit light, and the light emitted is received by the solar cell of the right flame detection unit 302 via the light receiving window 206 (right side). (2) The light receiving window 206 (right side) is detected for contamination based on the output signal of the solar cell. In this process, the optical attenuation rate DL (=1-V / V0) of the light-receiving window 206 (right side) is calculated using the initial output signal V0 of the solar cell when the light-receiving window 206 (right side) is clean and the output signal V during the contamination test.

[0038] Figure 4 shows an example of the configuration of the dedicated box 102. The dedicated box 102 shown in the figure includes a control board 401 and a storage battery 402.

[0039] The control board 401 is a circuit board for controlling the cleaning wiper 204 and the air duster 205. This control board 401 is connected to the detector body 202, the wiper motor 210, and the solenoid valve 215 of the air duster 205 by signal lines.

[0040] The control board 401 is equipped with a main memory 403 such as RAM and a processor 404 such as a CPU. Various programs are stored in the main memory 403. These programs are programs that can be distributed via non-temporary storage media or networks such as the Internet. Furthermore, various functions are realized by the execution of these programs by the processor 404. The functions realized include an acquisition unit 405 and a cleaning control unit 406.

[0041] The acquisition unit 405 acquires the contamination rate of the light-receiving window 206 of the fire detector 101. The acquisition unit 405 acquires the contamination rate for the left and right portions of the light-receiving window 206. The cleaning control unit 406 determines the cleaning equipment to be operated and the number of cleaning cycles based on the contamination rate acquired by the acquisition unit 405. The cleaning control unit 406 then operates the determined cleaning equipment for the determined number of cleaning cycles to clean the light receiving window 206. This cleaning is performed on both the left and right sides of the light receiving window 206. Therefore, the cleaning method can be different for the left and right sides.

[0042] The relationship between the soiling rate, cleaning equipment, and cleaning frequency is as follows: (1) If the contamination rate is 50% or more but less than 75%, run the Air Duster 205 once. (2) If the contamination rate is 75% or more but less than 85%, run the Air Duster 205 twice. (3) If the soiling rate is 85% or higher, run the cleaning wiper 204 twice.

[0043] Meanwhile, the battery 402 is connected to the piezoelectric plate 103 via a charging cable 105 (see Figure 1). The battery 402 stores the power generated by the piezoelectric plate 103. The battery 402 supplies power for driving the control board 401, the wiper motor 210 of the cleaning wiper 204, and the solenoid valve 215 of the air duster 205.

[0044] 1-3.Operation Next, the cleaning control 500 performed by the control board 401 of the dedicated box 102 will be described. Figure 5 shows an example of the cleaning control 500. The control shown in the figure is performed for the left and right portions of the light receiving window 206, respectively.

[0045] First, the acquisition unit 405 acquires the contamination rate output from the fire detector 101 (YES in step 501). Next, the cleaning control unit 406 determines whether the acquired contamination rate is 50% or more (step 502). If the result of this determination is that the contamination rate is not 50% or more (NO in step 502), the process returns to step 501. On the other hand, if the result of this determination is that the contamination rate is 50% or more (YES in step 502), the cleaning control unit 406 determines whether the contamination rate is 75% or more (step 503).

[0046] If the result of this determination is that the contamination rate is not 75% or higher (NO in step 503), the cleaning control unit 406 operates the air duster 205 only once (step 504). Specifically, the cleaning control unit 406 sends an open control signal to the solenoid valve 215 to inject compressed gas only once from the gas injection nozzle 214. As a result, compressed gas is injected only once from the gas injection nozzle 214 onto the light receiving window 206, and the dust adhering to the light receiving window 206 is removed. After that, the process returns to step 501. Note that in the cleaning control 500 for the left side of the light receiving window 206, an open control signal is sent to the solenoid valve 215A, and in the cleaning control 500 for the right side, an open control signal is sent to the solenoid valve 215B.

[0047] On the other hand, if the result of the determination in step 503 is that the soiling rate is 75% or more (YES in step 503), the cleaning control unit 406 determines whether the soiling rate is 85% or more (step 505).

[0048] If the result of this determination is that the contamination rate is not 85% or higher (NO in step 505), the cleaning control unit 406 operates the air duster 205 only twice (step 506). Specifically, the cleaning control unit 406 sends an open control signal to the solenoid valve 215 to inject compressed gas from the gas injection nozzle 214 only twice. As a result, compressed gas is injected from the gas injection nozzle 214 onto the light receiving window 206 only twice, and the dust adhering to the light receiving window 206 is removed. In this step, since compressed gas is injected twice, more dust is removed than in step 504. After that, the process returns to step 501. Note that in the cleaning control 500 for the left side of the light receiving window 206, an open control signal is sent to the solenoid valve 215A, and in the cleaning control 500 for the right side, an open control signal is sent to the solenoid valve 215B.

[0049] On the other hand, if the determination in step 505 indicates that the contamination rate is 85% or higher (YES in step 505), the cleaning control unit 406 operates the cleaning wiper 204 only twice (step 507). Specifically, the cleaning control unit 406 sends a drive signal to the wiper motor 210 to cause the wiper blade 212 to move back and forth twice. As a result, the wiper blade 212 swings from side to side, thereby wiping the entire surface of the light-receiving window 206. After that, the process returns to step 501. Note that the control to swing the wiper blade 212 from side to side is performed in the same way regardless of whether the cleaning control 500 targets the left or right side of the light-receiving window 206. The above is a description of the cleaning control 500.

[0050] According to the embodiment described above, the light-receiving window 206 can be cleaned according to its degree of contamination. In addition, the power for the control board 401 and the cleaning wiper 204 can be supplied by the power generated by the piezoelectric plate 103.

[0051] 2. Variations The above embodiment may be modified as follows. The following modifications may be combined with each other.

[0052] (1) Determination of cleaning equipment and cleaning frequency In the above embodiment, 50%, 75%, and 85% are used as threshold values ​​for the soiling rate to determine the cleaning equipment and the number of cleaning cycles. However, these threshold values ​​and numbers are merely examples. The threshold values ​​may be other than these, and the number of thresholds may be other than 3. Furthermore, the type of cleaning equipment and the number of cleaning cycles associated with each threshold may be changed as appropriate.

[0053] In the above embodiment, the cleaning equipment and the number of cleaning cycles are determined based on the contamination rate. Alternatively, either the cleaning equipment or the number of cleaning cycles may be determined based on the contamination rate. For example, the cleaning equipment installed on the fire detector 101 may be limited to either the cleaning wiper 204 or the air duster 205, and the relationship between the contamination rate and the number of cleaning cycles may be defined as follows. A. Defacement rate of 50% or more, but less than 75%. 1 operation. (i) Soiling rate of 75% or more, but less than 85%: 2 operations (c) Defacement rate of 85% or more, operated 3 times

[0054] As another example, the number of cleaning sessions could be fixed, and only the type of cleaning equipment used could be determined based on the soiling rate. In that case, the relationship between the soiling rate and the cleaning equipment could be defined, for example, as follows: A. Contamination rate 50% or more, less than 75%: Air Duster 205 I. Soiling rate 75% or more, less than 85%: Cleaning wiper 204 C. Soiling rate 85% or more: Air duster 205 and cleaning wiper 204

[0055] (2) Types of cleaning equipment In the above embodiment, a cleaning wiper 204 and an air duster 205 are used as cleaning equipment. However, these are merely examples of cleaning equipment. Other cleaning equipment may be used as long as it can clean the light-receiving window 206. For example, a water spray nozzle or a blower fan may be used. Even when other cleaning equipment is used, power may be supplied to that cleaning equipment from the storage battery 402.

[0056] (3)Functional layout In the above embodiment, the control board 401 is housed in a dedicated box 102. However, the location of the control board 401 is not limited to the dedicated box 102. For example, the control board 401 may be housed in the storage box 201 of the fire detector 101. Another example is that the control board 401 may be housed in the casing of the disaster prevention receiver panel.

[0057] (4) Power supply for cleaning equipment, etc. In the above embodiment, power is supplied from the battery 402 to the control board 401 and the wiper motor 210. This is effective in tunnels where the power supply is limited. However, the power source for the control board 401, etc., is not necessarily limited to the battery 402. Power may also be supplied to the control board 401, etc., via power lines from a disaster prevention receiving panel or a relay amplification panel.

[0058] (5) Timing of cleaning The piezoelectric plate 103 generates more power the greater the traffic volume. The generated power is stored in the battery 402. On the other hand, the light-receiving window 206 becomes more soiled the greater the traffic volume. In light of this relationship, the cleaning of the light-receiving window 206 may be performed based on the remaining battery charge of the battery.

[0059] In that case, the cleaning control unit 406 performs cleaning of the light receiving window 206, for example, when the remaining battery level of the storage battery 402 exceeds a predetermined value. Specifically, the cleaning control unit 406 monitors the remaining battery level of the storage battery 402 and performs the cleaning control 500 described above when the remaining battery level exceeds a predetermined value. On the other hand, if the remaining battery level does not exceed a predetermined value, the cleaning control unit 406 stops the cleaning control 500 described above.

[0060] (6) Method for obtaining the soiling rate In the above embodiment, the acquisition unit 405 acquires the contamination rate from the fire detector 101. Alternatively, the acquisition unit 405 may determine the contamination rate from the remaining battery charge of the storage battery 402.

[0061] In this case, the cleaning system 100 includes a traffic volume measuring unit for measuring the amount of vehicle traffic inside the tunnel 104. The acquisition unit 405 then acquires the contamination rate based on the traffic volume measured by the traffic volume measuring unit.

[0062] Here, the traffic volume measurement unit specifically refers to a combination of a piezoelectric plate 103 installed on the road inside the tunnel 104 and a storage battery 402 for storing the electricity generated by the piezoelectric plate 103. The acquisition unit 405 acquires the contamination rate based on the remaining charge of the storage battery 402.

[0063] In this process, the acquisition unit 405 inputs the remaining battery charge of the storage battery 402 into the contamination rate estimation model to obtain the contamination rate. Here, the contamination rate estimation model is a trained machine learning model that has been trained to learn the relationship between the remaining battery charge and the contamination rate. This contamination rate estimation model takes the remaining battery charge as input and outputs the contamination rate. Alternatively, the acquisition unit 405 inputs the remaining battery charge into a predetermined calculation formula to calculate the contamination rate. According to this method, the acquisition unit 405 can determine the contamination rate without having to acquire the contamination rate from the fire detector 101.

[0064] The traffic volume measurement unit described above may also be an infrared sensor, a radar sensor, a camera and image recognition means, an acoustic sensor, etc. The acquisition unit 405 may input the values ​​indicating the traffic volume measured by these sensors into a predetermined calculation formula to calculate the pollution rate.

[0065] (7) Malfunction of cleaning equipment In the above embodiment, if the soiling rate does not decrease even after cleaning, a warning may be issued indicating a possible malfunction of the cleaning equipment. In this case, the dedicated box 102 is equipped with a notification mechanism. The notification mechanism is a means for notifying of the possibility of a malfunction in the cleaning equipment. Furthermore, the cleaning control unit 406 of the dedicated box 102 records the cleaning history after cleaning. The recorded cleaning history includes information such as the date and time of cleaning, the degree of soiling, the cleaning equipment used, and the number of times cleaning was performed.

[0066] The acquisition unit 405 of the dedicated box 102 acquires a new soiling rate after cleaning is performed by the cleaning control unit 406. The notification means compares the acquired soiling rate with the soiling rate acquired immediately before cleaning, by referring to the cleaning history. If the result of this comparison is that the former soiling rate is the same as or higher than the latter soiling rate, the notification means transmits a fault alarm to the disaster prevention receiving panel. This fault alarm notifies of the possibility of a malfunction in the cleaning equipment used for cleaning. This fault alarm also includes information indicating the type of cleaning equipment used for cleaning.

[0067] Upon receiving this malfunction alarm, the disaster prevention receiver panel displays a message indicating a possible malfunction in the cleaning equipment used for the cleaning. This allows the supervisor to be aware of the potential problem with the cleaning equipment.

[0068] (8) Other variations It should be noted that the present invention is not limited to the embodiments described above, and various modifications are included. For example, the embodiments described above are described in detail to make the present invention easier to understand, and are not necessarily limited to those having all the configurations described. Furthermore, it is possible to replace parts of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add configurations from other embodiments to the configuration of one embodiment. In addition, it is possible to add, delete, or replace parts of the configuration of each embodiment with other configurations.

[0069] Furthermore, each of the above configurations, functions, processing units, and processing means may be implemented in hardware, either partially or entirely, by designing them as integrated circuits, for example. Alternatively, each of the above configurations and functions may be implemented in software by having the processor interpret and execute programs that implement each function. Information such as programs, tables, and files that implement each function can be stored in memory, a recording device such as a hard disk or SSD (Solid State Drive), or a recording medium such as an IC card, SD card, or DVD.

[0070] Furthermore, the control lines and information lines shown are those deemed necessary for explanatory purposes, and not all control lines and information lines are necessarily shown in the actual product. In reality, it is safe to assume that almost all components are interconnected. Furthermore, the above-described embodiments disclose at least the configuration described in the claims. [Explanation of symbols]

[0071] 100…Cleaning system, 101…Fire detector, 102…Dedicated box, 103…Piezoelectric plate, 104…Tunnel, 105…Charging cable, 201…Storage box, 202…Detector body, 203…Front plate, 204…Cleaning wiper, 205…Air duster, 206…Light receiving window, 207…Test lamp, 208…Opening, 209…Opening, 211…Wiper arm, 212…Wiper blade, 214A, 214B…Gas injection nozzle, 301…Left flame detection unit, 302…Right flame detection unit

Claims

1. A means for acquiring the degree of contamination of the light-receiving window of a fire detector, A cleaning control means that determines the cleaning equipment and cleans the light-receiving window based on the contamination rate obtained by the acquisition means, or determines the number of cleaning cycles and cleans the light-receiving window with the cleaning equipment the determined number of times, A cleaning system equipped with the following features.

2. Piezoelectric panels installed on the road inside the tunnel, A storage battery for storing the electricity generated by the piezoelectric plate, Furthermore, The cleaning equipment is powered by electricity supplied from the storage battery. The cleaning system according to claim 1.

3. The cleaning control means performs cleaning of the light receiving window when the remaining battery level of the storage battery exceeds a predetermined value. The cleaning system according to claim 2.

4. The system further includes a means for measuring the volume of vehicle traffic inside the tunnel, The acquisition means acquires the degree of contamination of the light-receiving window based on the traffic volume measured by the traffic volume measuring means. The cleaning system according to claim 1.

5. The traffic volume measuring means is A piezoelectric plate installed on the road inside the tunnel, A storage battery for storing the electricity generated by the piezoelectric plate, Equipped with, The acquisition means acquires the degree of contamination of the light receiving window based on the remaining charge of the storage battery. The cleaning system according to claim 4.

6. The acquisition means takes the remaining battery level of the storage battery as input and a trained machine learning model that outputs the contamination rate of the light receiving window as output, and acquires the contamination rate of the light receiving window by inputting the remaining battery level of the storage battery. The cleaning system according to claim 5.

7. The fire detector comprises a first flame detection unit and a second flame detection unit. The light-receiving window includes a first portion that covers the first flame detection unit and a second portion that covers the second flame detection unit. The acquisition means acquires a first contamination rate, which is the contamination rate of the first part, and a second contamination rate, which is the contamination rate of the second part. The cleaning control means is Based on the first contamination rate, the cleaning equipment is determined and the first part is cleaned, or the number of cleaning cycles is determined and the first part is cleaned with the cleaning equipment the determined number of times. Based on the aforementioned second contamination rate, the cleaning equipment is determined and the aforementioned second part is cleaned, or the number of cleaning cycles is determined and the aforementioned second part is cleaned with the cleaning equipment the determined number of times. The cleaning system according to claim 1.

8. The system further includes a notification means for notifying the possibility of a malfunction in the cleaning equipment used for the cleaning if, after cleaning is performed by the cleaning control means, another contamination rate is obtained by the acquisition means, and this other contamination rate is greater than or equal to the contamination rate obtained before the cleaning. The cleaning system according to claim 1.

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