TW200800426A - Method and device for cleaning electromagneitic radiation-based sensors - Google Patents

Method and device for cleaning electromagneitic radiation-based sensors Download PDF

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Publication number
TW200800426A
TW200800426A TW096117032A TW96117032A TW200800426A TW 200800426 A TW200800426 A TW 200800426A TW 096117032 A TW096117032 A TW 096117032A TW 96117032 A TW96117032 A TW 96117032A TW 200800426 A TW200800426 A TW 200800426A
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Taiwan
Prior art keywords
compressed air
sensor
cleaning
sensing surface
flow
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TW096117032A
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Chinese (zh)
Inventor
Markus Bierkandt
Stefan Burgass
Chris Kakuschke
Christian Lawnik
Dominik Lehberger
Stephan Leifer
Olaf Richter
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Siemens Ag
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Publication of TW200800426A publication Critical patent/TW200800426A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/032—Constructional details for solid-state radar subsystems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
    • B60S1/0833—Optical rain sensor
    • B60S1/0844—Optical rain sensor including a camera
    • B60S1/0848—Cleaning devices for cameras on vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/54—Cleaning windscreens, windows or optical devices using gas, e.g. hot air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
    • B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
    • B61L3/121—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using magnetic induction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/60—Velocity or trajectory determination systems; Sense-of-movement determination systems wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • G01S7/4813—Housing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
    • B61L27/20—Trackside control of safe travel of vehicle or train, e.g. braking curve calculation
    • B61L2027/202—Trackside control of safe travel of vehicle or train, e.g. braking curve calculation using European Train Control System [ETCS]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • G01S7/4039—Means for monitoring or calibrating of parts of a radar system of sensor or antenna obstruction, e.g. dirt- or ice-coating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/497—Means for monitoring or calibrating

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

This invention concerns a method and a device for cleaning electromagnetic radiation-based sensors, especially the radar sensors or the optical sensors. A special efficient and energy saving cleaning method is characterized by compressed air percussion(5) is point to a sensor face(1a,1b)or to a beam path(8) of sensor.

Description

200800426 九、發明說明： 【發明所屬之技術領域】 本發明係一種清潔電磁輻射系感測器的方法 尤其是一種清潔軌道車輛之雷達感測器或光學感 法及裝置。 不良的天候條件，例如下雪或大量的灰塵， 感測器變髒，因而導致感測器發生故障。例如， 水可能會蓄積在感測器的外殻或感測面上，因而 •徑受到妨礙。 例如測量軌道車輛的對地速度之的雷達感測 感測器都屬於會因爲不良的天候條件受到影響的 雷達感測器經常發生的問題是向下傾斜的感 到環境負荷（尤其是天候因素）的影響，使雷達感 達射束受到阻尼而故障。特別不利的是感測面在 冰的天候中經常會出現這種情況。當雷達感器測 0 通常必須以第二種測量距離的方法來取代雷達感 量功能，但缺點是這種替代方法的測量誤差大於 器的測量誤差，特別是在以ETCS (歐洲火車控制 礎的現代化火車安全系統中可能會出現超出容許 誤差，因而無法達到經ETCS約定及驗證的安全 要感測面的髒污（特別是結冰）沒有被清除掉，故 感測器就無法自動恢復工作。感測面的清潔工作 人工方式進行，但是這對於持續運轉的火車行 是不可能的，因此在不良的天候條件下，火車 及裝置， 測器的方 可能會使 半融的雪 使射束路 器或光學 感測器。 測面會受 測器因雷 下雪或結 故障時， 測器的測 雷達感測 系統）爲基 値的測量 目標。只 障的雷達 通常是以 系統而言 轉管局就 200800426 不得不接受雷達感測器及ETCS火車安全系統可能會長時 間故障的事實。 【先前技術】 爲了解決結冰的問題，不停的以壓縮空氣噴吹或是加 熱感測面都是已經被試驗過的方法。不過這些方法都因爲 能源消耗量太大及需要建制的基礎設施耗費過巨而被證明 並不可行。 【發明內容】 ® 因此本發明之目的是提出一種能夠減少環境條件（尤 其是天候條件）對於感測器之作用能力的影響的方法及裝 置。 本發明提出的方法是將壓縮空氣氣流朝向感測器的感 測面或射束路徑。只需一道或是少數幾道壓縮空氣氣流就 可以及時防止感測面完全結冰或是積滿雪，而使受到故障 威脅的感測器能夠繼續運轉。利用這種方法就可以用很少 I 的能源消耗將畜積在感測面上造成千擾的體污層排除掉。 ® 即使是在不良的環境條件下，經由這種最好是只在有髒污 情況出現時才會啓動的壓縮空氣清潔作用，也可以達到所 要求的安全目標，尤其是達到經ETCS約定及驗證的安全 目標。由於感測器的故障時間縮短，相對而言感測器處於 可用狀態的時間就會獲得延長，因而可以提高ETCS被接 受的程度。 依據申請專利範圍第2項的方法’壓縮空氣氣流是以 週期性的方式噴吹。每次噴吹壓縮空氣氣流的時間只有數 •200800426 毫秒，而中間休息的時間則可長達數分鐘。 依據申請專利範圍第3項的方法，壓縮空氣氣流的噴 吹是根據感測面周圍的溫度來決定。例如當溫度低於3 °C 時就會被啓動。因此和人工清潔的方式不同，即使是在車 輛（尤其是軌道車輛）行駛期間，也可以進行感測器的清潔 工作。 除了根據溫度來決定壓縮空氣氣流的啓動外，依據申 請專利範圍第4項的方法，另外一種可行的替代或附加方 式是根據感測器的至少一個測量信號的至少一個參數來決 定壓縮空氣氣流的啓動。例如，這個參數可以是測量信號 的強度，也就是說當信號開始出現衰減時，尤其是當雷達 信號開始出現衰減時，清潔行動就會被啓動。因爲只有在 確實必要的情況下才會啓動壓縮空氣氣流，因此這種方式 可以提供一種十分節省能源的解決方案。 依據申請專利範圍第5項的方法，壓縮空氣氣流是以 氣動或電動方式產生。採用氣動方式時，可採空氣泵方式。 採用電動方式時，可採用一個電動送風機。 申請專利範圍第6項的內容是提出一種執行上述方法 用的裝置。這種裝置具備：第一手段，用以產生壓.縮空氣 氣流；第二手段，用以使壓縮空氣氣流朝向感測器的感測 面或射束路徑。和本發明提出清潔方法一樣，本發明提出 的裝置可以用來清潔因不同種類的原因被弄髒的不同種類 的感測器。雖然本說明書中描述的主要是因爲天候條件造 成軌道車輛的雷達感測器的髒污，但並不表示本發明的方 200800426 法或裝置僅適用於軌道車輛用的雷達感測器的清潔工作。 依據申請專利範圍第7項，本發明的的裝置具有一個 用以產生壓縮空氣氣流的空氣泵，這個空氣泵經由一條壓 縮空氣管線連接一個壓縮空氣箱。軌道車輛通常都會具有 現成的壓縮空氣箱，因此只需從現有的壓縮空氣箱拉出一 條壓縮空氣管線到產生壓縮空氣用的空氣泵即可。 依據申請專利範圍第8項及第9項，本發明的裝置至 少具有一個壓縮空氣噴嘴，這個壓縮空氣噴嘴的方向不是 面對感測面就是被插入至將射束路徑（8)以筒管狀包圍住 的一個外殼。 【實施方式】 以下以配合圖式對本發明的內容做進一步的說明。 第1圖顯示一個雷達裝置（2)的兩個相鄰的感測面 (la，lb)，從感測面（la，lb)會發出輻射射束（未在第1圖 中繪出）。由於感測面（1 a，1 b)對一個水平面而言是傾斜的， 也就是說對地面而言是傾斜的，因此會受到不良天候很大 的影響。經驗顯示，溫度在〇 °C到-2 °C之間的帶有黏性的含 水微粒（例如雪水、露水、冰）對於射束強度的阻尼作用比 較爲乾燥且溫度更低的凍結的雪還要大。爲了降低阻尼作 用造成一個或兩個感測面（la，lb)故障的機率，故設置一 個至少帶有一個壓縮空氣噴嘴（4)的壓縮空氣裝置（3)，用以 產生吹向兩個感測面（la，lb)的壓縮空氣氣流（5)。壓縮空 氣是由軌道車輛現有的壓縮空氣箱經由一條未在第1圖中 繪出的壓縮空氣管線負責供應。最好是以溫度控制及/或阻 200800426 尼控制的方式來進行壓縮空氣的噴吹。 在第2圖顯示的實施方式中，壓縮空氣氣流（5)並非直 接對準感測面（6)噴吹，而是吹入將感測面（6)以筒管狀包圍 住的一個外殻（7)的內部。從第2圖的a)至d)可以看出，這 樣在射束路徑（8)上就不會有造成干擾的微粒，例如半融的 雪水（9)。 以上兩種實施方式都可以降低附著造成干擾的微粒的 機率，因此可以延長感測器處於可用狀態的時間，尤其是 • 延長感測器在天候因素影響下處於可用狀態的時間。 【圖式簡單說明】 第1圖 第一種實施方式。 第2圖一種清潔軌道車輛的雷達感測器的清潔裝置 的第二種實施方式。 【元件符號說明】 1 a，1 b ; 6 感測面 2 雷達裝置 3 壓縮空氣裝置 4 壓縮空氣噴嘴 、 5 壓縮空氣氣流 7 外殻 8 射束路徑 9 半融的雪水200800426 IX. Description of the Invention: [Technical Field] The present invention is a method of cleaning an electromagnetic radiation type sensor, in particular, a radar sensor or an optical sensor and apparatus for cleaning a rail vehicle. Poor weather conditions, such as snow or heavy dust, cause the sensor to become dirty, causing the sensor to malfunction. For example, water may accumulate on the outer casing or sensing surface of the sensor, and thus the diameter is hindered. For example, radar sensing sensors that measure the ground speed of a rail vehicle belong to radar sensors that are affected by poor weather conditions. The problem that often occurs is the downward tilt of the ambient load (especially weather factors). The effect is that the radar senses that the beam is damped and fails. It is particularly disadvantageous that the sensing surface often occurs in ice weather. When the radar sensor measures 0, it is usually necessary to replace the radar sensitivity function with the second method of measuring distance, but the disadvantage is that the measurement error of this alternative method is greater than the measurement error of the device, especially in the case of ETCS (European train control). In the modern train safety system, the tolerance may be exceeded, so that the dirt (especially icing) of the safety sensing surface that has not been agreed and verified by the ETCS cannot be removed, so the sensor cannot automatically resume work. The cleaning of the sensing surface is done manually, but this is not possible for a continuously running train, so in poor weather conditions, the train and the device, the side of the detector may cause the semi-melted snow to make the beam path. Or optical sensor. The measuring surface is the measurement target based on the radar sensing system of the detector due to lightning or knot failure. The radar of the obstacle is usually the system. In the case of the system, the 200800426 has to accept the fact that the radar sensor and the ETCS train safety system may be prolonged. [Prior Art] In order to solve the problem of icing, it is a method that has been tested by continuously blowing air or heating the sensing surface. However, these methods have proven to be infeasible because of the high energy consumption and the cost of infrastructure that needs to be built. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method and apparatus that can reduce the effects of environmental conditions, particularly weather conditions, on the ability of a sensor to function. The method proposed by the present invention is to direct the flow of compressed air towards the sensing or beam path of the sensor. With only one or a few compressed air streams, it is possible to prevent the sensor surface from freezing or snowing in a timely manner, so that the sensor that is threatened by the fault can continue to operate. With this method, it is possible to eliminate the fouling layer that accumulates on the sensing surface with a small amount of energy consumption. ® Even under adverse environmental conditions, it is possible to achieve the required safety objectives, especially through ETCS commitments and verification, through the compressed air cleaning that is best activated only when there is a contamination. Security goal. Since the fault time of the sensor is shortened, the time during which the sensor is in an available state is prolonged, thereby increasing the degree to which the ETCS is accepted. According to the method of claim 2, the compressed air flow is blown in a periodic manner. Each time the compressed air stream is blown, the number is only •200800426 milliseconds, and the rest time can be as long as several minutes. According to the method of claim 3, the blowing of the compressed air stream is determined according to the temperature around the sensing surface. For example, it will be activated when the temperature is below 3 °C. Therefore, unlike manual cleaning, the cleaning of the sensor can be performed even during driving of a vehicle (especially a rail vehicle). In addition to determining the activation of the compressed air flow in accordance with the temperature, in accordance with the method of claim 4, another possible alternative or additional means is to determine the flow of compressed air based on at least one parameter of at least one measurement signal of the sensor. start up. For example, this parameter can be the strength of the measured signal, that is, when the signal begins to decay, especially when the radar signal begins to decay, the cleaning action is initiated. This is a very energy-saving solution because the compressed air flow is only activated when it is really necessary. According to the method of claim 5, the compressed air flow is generated pneumatically or electrically. When pneumatically used, the air pump can be used. When using the electric method, an electric blower can be used. The content of item 6 of the patent application is a device for carrying out the above method. The apparatus includes: a first means for generating a compressed air flow; and a second means for directing the flow of compressed air toward the sensing or beam path of the sensor. As with the cleaning method proposed by the present invention, the apparatus proposed by the present invention can be used to clean different types of sensors that are soiled for different kinds of reasons. Although the description in this specification is mainly due to the weathering of the radar sensor of the rail vehicle, it does not mean that the method of the present invention 200800426 is only applicable to the cleaning operation of the radar sensor for rail vehicles. According to the seventh aspect of the patent application, the apparatus of the present invention has an air pump for generating a flow of compressed air which is connected to a compressed air tank via a compressed air line. Rail vehicles typically have off-the-shelf compressed air boxes, so simply pull a compressed air line from the existing compressed air box to an air pump that produces compressed air. According to the eighth and ninth aspects of the patent application, the device of the invention has at least one compressed air nozzle which is oriented not to face the sensing surface or to be inserted into the tubular path (8) A shell that lives. [Embodiment] Hereinafter, the contents of the present invention will be further described with reference to the drawings. Figure 1 shows two adjacent sensing faces (la, lb) of a radar device (2) from which a radiation beam is emitted (not depicted in Figure 1). Since the sensing surface (1 a, 1 b) is inclined to a horizontal plane, that is, it is inclined to the ground, it is greatly affected by bad weather. Experience has shown that viscous water-containing particles (eg snow, dew, ice) with a temperature between 〇 ° C and -2 ° C have a damping effect on the beam intensity compared to dry and cooler snow. Still bigger. In order to reduce the probability of damping of one or two sensing surfaces (la, lb), a compressed air device (3) with at least one compressed air nozzle (4) is provided for generating two senses of blowing The compressed air flow (5) of the measuring surface (la, lb). Compressed air is supplied by the existing compressed air tank of the rail vehicle via a compressed air line not depicted in Figure 1. It is best to carry out the injection of compressed air in a temperature controlled and/or controlled manner. In the embodiment shown in Fig. 2, the compressed air stream (5) is not directly directed to the sensing surface (6), but is blown into an outer casing that encloses the sensing surface (6) in a tubular shape ( 7) The interior. As can be seen from a) to d) of Fig. 2, there is no disturbing particles on the beam path (8), such as semi-melted snow (9). Both of these embodiments reduce the chance of adhering to the interfering particles, thus extending the time the sensor is available, especially • prolonging the time the sensor is available under the influence of weather factors. [Simple description of the drawing] Fig. 1 The first embodiment. Figure 2 is a second embodiment of a cleaning device for a radar sensor that cleans a rail vehicle. [Explanation of component symbols] 1 a, 1 b ; 6 Sensing surface 2 Radar device 3 Compressed air device 4 Compressed air nozzle, 5 Compressed air flow 7 Housing 8 Beam path 9 Semi-melted snow water

Claims (1)

200800426 十、申請專利範圍： 1 · 一種清潔電磁輻射系感測器的方法，尤其是一種清潔軌 道車輛的雷達感測器或光學感測器的方法，這種方法的 特徵爲：使壓縮空氣氣流（5)吹向感測器的感測面（1 a, lb) 或射束路徑（8)。 2 ·如申請專利範圍第1項的方法，其特徵爲：壓縮空氣氣 流（5)係以週期性的方式噴吹。 3 ·如前述申請專利範圍中任一項的方法，其特徵爲：根據 感測面（la，lb ; 6)周圍的溫度來決定壓縮空氣氣流（5)的 啓動。 4 ·如前述申請專利範圍中任一項的方法，其特徵爲：根據 感測器的至少一個測量信號的至少一個參數來決定壓縮 空氣氣流（5)的啓動。 5 .如前述申請專利範圍中任一項的方法，其特徵爲：以氣 動或電動方式產生壓縮空氣氣流（5)。 6. —種執行如前述申請專利範圍中任一項方法的裝置，其 特徵爲具備：第一手段，用以產生壓縮空氣氣流（5);以 及第二手段，用以使壓縮空氣氣流（5)吹向感測器的感測 面（la，lb)或射束路徑（8)。 7. 如申請專利範圍中第6項的裝置，其特徵爲：第一手段 包括一個空氣泵裝置，其經由一條壓縮空氣管線連接一 個壓縮空氣箱。 8. 如申請專利範圍中第6項或第7項的裝置，其特徵爲： 第二手段至少包括一個面對感測面（1 a，1 b )的壓縮空氣噴 200800426 嘴（4) 〇 9.如申請專利範圍第6項或第7項的裝置，其特徵爲：第 二手段至少包括一個插入將射束路徑（8)以筒管狀包圍住 的一個外殼（7)的壓縮空氣噴嘴（4)。200800426 X. Patent application scope: 1 · A method for cleaning an electromagnetic radiation sensor, in particular a method for cleaning a radar sensor or an optical sensor of a rail vehicle, the method is characterized in that a compressed air flow is provided (5) Blowing the sensing surface (1 a, lb) or beam path (8) of the sensor. 2. A method as claimed in claim 1, characterized in that the compressed air stream (5) is sprayed in a periodic manner. The method of any of the preceding claims, characterized in that the activation of the compressed air stream (5) is determined based on the temperature around the sensing surface (la, lb; 6). The method of any of the preceding claims, characterized in that the activation of the compressed air flow (5) is determined based on at least one parameter of at least one measurement signal of the sensor. A method according to any one of the preceding claims, characterized in that the compressed air stream (5) is produced pneumatically or electrically. 6. Apparatus for performing the method of any one of the preceding claims, characterized by comprising: a first means for generating a flow of compressed air (5); and a second means for causing a flow of compressed air (5) ) a sensing surface (la, lb) or a beam path (8) that is blown toward the sensor. 7. Apparatus according to item 6 of the patent application, characterized in that the first means comprises an air pump means connected to a compressed air tank via a compressed air line. 8. The device of claim 6 or 7, wherein the second means comprises at least one compressed air jet facing the sensing surface (1 a, 1 b ) 200800426 mouth (4) 〇 9 A device according to claim 6 or 7, characterized in that the second means comprises at least one compressed air nozzle (4) inserted into a casing (7) enclosing the beam path (8) in a tubular shape (4) ).
TW096117032A 2006-05-19 2007-05-14 Method and device for cleaning electromagneitic radiation-based sensors TW200800426A (en)

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