WO2004101332A1 - ワイパー制御方法、およびワイパー制御装置 - Google Patents
ワイパー制御方法、およびワイパー制御装置 Download PDFInfo
- Publication number
- WO2004101332A1 WO2004101332A1 PCT/JP2004/006780 JP2004006780W WO2004101332A1 WO 2004101332 A1 WO2004101332 A1 WO 2004101332A1 JP 2004006780 W JP2004006780 W JP 2004006780W WO 2004101332 A1 WO2004101332 A1 WO 2004101332A1
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- WIPO (PCT)
- Prior art keywords
- wiping
- wiper
- level
- rainfall
- state
- Prior art date
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Classifications
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- 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
- B60S1/0896—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to a vehicle driving condition, e.g. speed
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- 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
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/14—Rainfall or precipitation gauges
Definitions
- the present invention relates to a wiper control method and a wiper control device, and more particularly to a wiper control method and a wiper control device for actively adjusting a wiping determination condition for determining a wiping state of a wiper according to a driving scene. . Background technology
- each step has three types of intermittent times corresponding to the three modes.
- the actual intermittent time is selected from the three modes based on the setting position of the so-called sensitivity adjustment film.
- Such adjustment is realized by selecting a short intermittent time from the same step when, for example, the driver sets a higher film. As a result, for example, even in the same rainfall condition, the intermittent time is shortened, which is equivalent to higher detection sensitivity for the driver.
- the required film sensitivity may be different depending on the driving scene.
- a specific description will be given of the driving scene, for example, when entering a tunnel and exiting from a tunnel. It is assumed that the vehicle is traveling at a constant speed, and that rain with a certain size is continuously falling before and after the tunnel, and there is no rain in the tunnel.
- the required film sensitivity differs depending on the driving scene, even for the same dry par.
- the volume is set to the same sensitivity, and even if evaluated by the same driver, it may feel too dull or too sensitive depending on the driving scene There is. Therefore, if the sensitivity is adjusted only by the sensitivity adjustment film, a state that does not match the driver's feelings may occur. Also, while predicting the next situation, Adjusting the film can be a hassle for the driver.
- the present invention is based on the finding that, even with the same driver, the sensation of an appropriate wiping state can vary depending on the driving scene.
- the present invention relates to a wiper control method and a wiper control device that actively adjusts a wiping determination condition for determining a wiper state of a wiper according to a driving scene, and realizes a wiping state matching a driver's perception. I will provide a.
- the vehicle state and the traveling environment are comprehensively determined, and an appropriate wiping determination condition is set according to the situation.
- the wiping determination condition is a condition for determining a certain wiping state with respect to raindrops attached to the detection surface.
- Such wiping determination conditions include the detection sensitivity of raindrops attached to the detection surface and the correspondence between the rainfall level and the wiping level.
- each traveling scene is determined from vehicle state information and traveling environment information.
- the vehicle status information includes stopping, running, acceleration, deceleration, etc.
- the driving environment information includes rainfall, sunny, light and dark, and inside rainfall shields such as tunnels.
- the traveling scene at a certain point in time is determined based on the progress up to that point. For example, one time When the vehicle stops at a point, the traveling scene is determined based on whether the vehicle has stopped before that time, or whether the vehicle has stopped after decelerating from traveling during that time.
- a driving scene in which the vehicle is decelerating from a certain constant speed a driving scene in which the vehicle decelerates from a certain constant speed and stops, and a driving scene in which the vehicle accelerates from a stop state are determined.
- the driving environment information indicates that the vehicle has entered a tunnel from a certain rainfall condition, a driving scene in which a certain rainfall condition or a sunny condition has continued for a predetermined period, and a driving condition in which the condition has changed from a bright condition to a dark condition. The scene is determined.
- Such a determination of a driving scene for example, identifies a situation (vehicle state and driving environment state) at a certain point in time, and detects that a specific event has occurred at a point after the point in time. This can be achieved. For example, if the vehicle is traveling at a constant speed at a certain point in time, and the driving environment condition is a constant rainfall, an event that the vehicle decelerates later is detected, and the vehicle is driven at a constant speed in a constant rainfall condition. It is possible to determine a traveling scene in which the vehicle has decelerated from traveling. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a diagram illustrating a conventional wiper control method.
- FIG. 2 is a conceptual diagram illustrating the wiper control method of the present invention.
- FIG. 3 is a block diagram illustrating a configuration of the wiper control device according to the first embodiment of the present invention using a layer structure.
- FIG. 4 is a block diagram illustrating a configuration of the wiping state control unit.
- FIG. 5 is a conceptual diagram illustrating a scene determination method.
- FIG. 6 is a conceptual diagram illustrating a scene determination method.
- FIG. 7 is a conceptual diagram illustrating a dynamic link method.
- FIG. 8 is a flowchart illustrating the operation of the first embodiment. You.
- FIG. 9 is a conceptual diagram illustrating a second embodiment of the present invention.
- FIG. 10 is a block diagram illustrating a configuration of a wiper control device according to a second embodiment of the present invention using a layer structure.
- FIG. 11 is a block diagram illustrating a configuration of a wiper control device according to a third embodiment of the present invention using a layer structure.
- the intermittent time step is set to 7.
- the relationship between this particular light rain and Step 7 will be fixed thereafter. That is, if the rainfall state is determined to be light rain, the intermittent time of step 7 is always selected. Then, the actual intermittent time is selected from among the three intermittent times included in step 7 according to the driver's sensitivity program setting.
- such a mode may be used as the wiping determination condition.
- an appropriate mode may be selected from these multiple modes according to the driving scene.
- the relationship between the level of the rainfall state and the step of the intermittent time may not be fixed to one-to-one but may be dynamically varied. That is, the correspondence between each level in the rainy state and each level in the wiping state may be used as the wiping determination condition, and both correspondences may be changed according to the traveling scene.
- FIG. 2 includes Table 1 and Table 2.
- Table 1 has rain levels Are defined step by step.
- the wiping state is defined by being divided into a plurality of stepwise wiping levels according to the wiping standby time and the wiping speed.
- the wiping standby time includes zero (that is, no standby time).
- Figure 2 shows an example of the definition of the wiping state.
- the wiping state for example, as shown in Fig. 2, if the wiping standby time is long, the intermittent time is long, and if the wiping standby time becomes infinite ( ⁇ ), the wiping state is stopped. On the other hand, if the wiping standby time is short, the intermittent time is short, and if the wiping standby time is zero, continuous wiping is performed.
- the continuous wiping is divided into high-speed continuous wiping and low-speed continuous wiping according to the wiping speed. Thus, by combining the wiping standby time and the wiping speed, various wiping operations of the wiper can be controlled.
- each item of the rainfall level in Table 1 is dynamically associated with each item of the wiping level in Table 2.
- rain levels n to n-5 are assigned to high-speed continuous wiping
- rain levels n to n-8 are assigned to high-speed continuous wiping.
- the wiping level can be increased with respect to the predetermined rainfall level.
- Specific methods of dynamic association include vehicle speed information, sensitivity adjustment film information, information on changes in the state of attachment of raindrops on the detection surface, auto light information, other control information such as timers, and other vehicle information. Based on the determined driving scene, the driving situation is determined, and the correspondence between the rainfall level item and the wiping level item is dynamically determined according to the determined driving scene.
- the wiping level associated with the specific rainfall level is increased. Higher (lower waiting time or faster wiping speed Fast). Conversely, lowering or lowering the wiping level means lowering the wiping level associated with a particular rainfall level (longer waiting time or slower wiping speed).
- FIG. 3 is a block diagram illustrating the configuration of the wiper control device according to the first embodiment of the present invention using a layer structure.
- the wiper control device according to the first embodiment of the present invention can be represented by a configuration of four layers.
- SAP service access point
- the first layer includes the rain sensor physical layer 90, the vehicle control computer or wiper motor 100, and the second layer includes the raindrop information detector 22, the vehicle information detector 24, and the interface.
- the third layer includes a rainfall level generation unit 32, and the fourth layer includes a wiping state control unit 42 and a wiper drive signal generation unit 48. Note that these components can be realized by software.
- the rain sensor physical layer 90 is composed of an optical mechanism and a circuit.
- an optical mechanism that reflects light from a light emitting element on a detection surface and receives the reflected light with a light receiving element, and processes the light receiving element output It is composed of circuits such as a filter circuit, amplifier circuit, and A / D converter. Examples of such a lane sensor are disclosed in JP-A-2001-18047 and JP-A-2002-277736.
- the optical mechanism will be described. For example, light emitted from a light emitting element such as an LED is guided through a prism glass or the like to a glass substrate (wind shield glass) that is a transparent substrate from which water droplets are to be detected. The guided light is totally reflected on the detection surface, and enters the light receiving element such as a photo diode through the prism glass.
- a light emitting element such as an LED
- the guided light is totally reflected on the detection surface, and enters the light receiving element such as a photo diode through the prism glass.
- Such an optical mechanism has a maximum output to the light-receiving element, for example, in a state where no water droplets adhere. Are arranged so as to generate the error. At this time, if water droplets or the like adhere to the detection surface, the output of the light receiving element decreases.
- a detection surface is arranged within the wiping operation range of the wiper.
- the vehicle control computer or the wiper mode 100 is connected to the wiper control device of the present invention, and can be appropriately selected according to the embodiment of the present invention.
- the wiper motor is controlled via the vehicle control computer.
- the wiper motor is directly controlled.
- the raindrop information detecting section 22 detects and outputs various information related to raindrops based on the output signal of the light receiving element of the rain sensor.
- the information includes the event of raindrop attachment, the fluctuation of the attached raindrop, and the amount of signal level displacement per predetermined time.
- the vehicle information detecting section 24 detects and outputs various information controlled on the vehicle side.
- the vehicle information includes an auto stop signal indicating a wiper operation section, vehicle speed information, wiper switch position information, auto light information, sensitivity polymer set position information, and light switch position information.
- the interface 26 converts the wiper drive signal from the upper layer (fourth layer) into a signal suitable for the vehicle control computer or the wiper motor, and outputs the signal.
- the rain level generator 32 determines the current rain level based on the output of the rain information detector 22 and generates a rain level. Specifically, it decides which of the rainfall levels defined in Table 1 of Figure 2 applies. As will be described later, the rainfall level should be set to the established reference rainfall level and the provisional provisional rainfall level.
- the wiping state control unit 42 determines the driving scene using control information such as vehicle speed information, rainfall level information, auto light information, and timer 1, and determines the driving scene.
- the correspondence between the rainfall level and the wiping level is adjusted according to the driving scene.
- the wiping state control unit 42 determines the traveling scene from the rain level generated by the rain level generation unit 32, the vehicle speed information detected by the vehicle information detection unit 24, the auto-trip information, and the like.
- a predetermined rainfall level is determined to be assigned to which wiping level. If the sensitivity volume is set, adjust the correspondence between the rainfall level and the wiping level in consideration of the sensitivity volume as necessary.
- the wiping state control unit 42 has a traveling scene determination function and a correspondence adjustment function.
- the wiper drive signal generation section 48 is configured to generate the rain level and the wiping level set by the wiping state control section 42 and the rain level generated by the rain level generation section 32, as shown in FIG.
- the wiping state as shown in Table 2 is determined, and a wiper drive signal having a predetermined wiping standby time and a predetermined wiping speed is output.
- the wiper drive signal is output to the vehicle control computer or wiper mode 100 via interface 26.
- the level of rainfall can be determined based on the raindrop information detected by the raindrop information detection unit 22.
- a method of detecting raindrop information used for generating a rainfall level will be described.
- a method for detecting raindrop information a method for detecting dynamic attachment of raindrops disclosed by the present inventors (Japanese Patent Application Laid-Open No. 2000-180447) can be used.
- a delay signal is generated from the signal of the light receiving element, the difference between the signal of the light receiving element and the delay signal is obtained, and when the difference occurs, it is determined that a water droplet has collided with the detection surface.
- a primary delay signal of the light receiving element signal is generated, a secondary delay signal is generated from the primary delay signal, and a difference between the primary delay signal and the secondary delay signal is obtained.
- a water droplet hits the surface To judge.
- the raindrop information detection unit 22 detects the event of the raindrop colliding with the detection surface and outputs the event as the attachment of the raindrop.
- the rain level generator 32 may determine the level of rain based on such information on the attachment of raindrops and generate the current rain level.
- the rainfall level may be defined stepwise based on the number of deposits per predetermined time, and the rainfall level generator 32 may determine the rainfall level according to the number of deposits per predetermined time. Specifically, the rainfall level may be higher if the number of deposits per predetermined time is large, and the rainfall level may be lower if the number of deposits is small. In this way, it is possible to define the rainfall state in detail based on the raindrop adhesion information.
- the fluctuation of the attached raindrops may be used to determine the rainfall level.
- Japanese Patent Application Laid-Open No. 2002-2777386 which is disclosed by the present inventors, indirectly attaches a dynamic fluctuation of a signal of a light-receiving element obtained through a raindrop attached to a detection surface. It discloses a method of detecting a dynamic fluctuation of a kimono, and judging the size of a raindrop and how to hit the raindrop based on a change pattern of the fluctuation of the signal. In this way, the size of raindrops can be estimated from the information on the fluctuations of raindrops.By combining the information on the fluctuations of raindrops with the attachment of raindrops, the rainfall state can be further detailed. It can be divided into levels.
- the change pattern of the signal fluctuation used for the above determination can be the time change pattern of the signal fluctuation, and the length of the signal fluctuation can be indirectly detected by the length of the signal fluctuation. it can. For example, if the attached matter is raindrops, the larger the raindrops, the longer the fluctuations will be. Therefore, the size of the raindrops can be estimated from the length of the detected fluctuations.
- the fluctuation pattern of the signal fluctuation can be used as a pattern, and the fluctuation of the attached matter can be indirectly detected based on the signal fluctuation. For example, if the attached matter is a raindrop, the larger the raindrop, the larger the fluctuation. Therefore, the size of the raindrop can be estimated from the detected fluctuation.
- the parameters representing the magnitude of the fluctuation include the number of changes in the fluctuation, the amount of change in the fluctuation, and the direction of the change in the fluctuation.
- the raindrop information detecting section 22 detects and outputs the change pattern of the signal fluctuation. Specifically, it outputs the length of the signal fluctuation, the number of changes in the fluctuation of the signal, the amount of increase, and the direction of the change.
- the rainfall level generation unit 32 may determine the rainfall state in more detail from the attachment of the raindrop and the change pattern of the signal fluctuation detected by the raindrop information detection unit 22 in this manner.
- the correspondence between various characteristics of the signal fluctuation including the pattern of the fluctuation of the signal fluctuation and the pattern of the fluctuation of the signal fluctuation length and the size of the raindrop is experimentally obtained.
- the rainfall level generation unit 32 may determine the size of the raindrop from the detected fluctuation pattern of the signal based on the table.
- the rainfall level generation unit 32 may determine the rainfall level from the number of attached raindrops detected per predetermined time and the size of the attached raindrops, and may generate the current rainfall level.
- a method of detecting raindrop information a method of detecting raindrops by comparing with a reference value disclosed in Japanese Patent Application Laid-Open No. 61-37560 (so-called threshold method), It is also possible to use a method of detecting raindrops based on the integrated value of the output of the light-receiving element (so-called integration method) disclosed in JP-A-4-134953. Then, the rain level generator 32 determines the rain level based on the raindrop information detected by these methods. it can.
- the rainfall level generator 32 generates the established reference rainfall level and the provisional provisional rainfall level. Provisional rainfall levels are determined in rapid response to changes in rainfall conditions. That is, when the detection information from the raindrop information detection unit 22 changes, the provisional rainfall level is changed accordingly. On the other hand, the established reference rainfall level is determined according to a relatively long judgment period.
- the rainfall level generation unit 32 determines the provisional rainfall level in accordance with the change. Then, it is determined whether the provisional rainfall level is maintained for a predetermined period using the evening image. If the provisional rain level is maintained for a predetermined period, the reference rain level is updated with the maintained provisional rain level. On the other hand, if the provisional rainfall level is not maintained for a predetermined period and is temporary, the reference rainfall level is not changed and is maintained as it is.
- FIG. 4 is a block diagram illustrating a configuration of the wiping state control unit.
- FIGS. 5 and 6 are conceptual diagrams illustrating a method of determining a scene.
- FIG. 7 illustrates a method of a dynamic link.
- FIG. 4 is a block diagram illustrating a configuration of the wiping state control unit.
- FIGS. 5 and 6 are conceptual diagrams illustrating a method of determining a scene.
- FIG. 7 illustrates a method of a dynamic link.
- the wiping state control unit 42 includes a scene decomposition unit 44 and a link unit 46.
- the scene decomposing unit 44 determines a running scene from the rain level generated by the rain level generating unit 32, the vehicle speed information detected by the vehicle information detecting unit 24, the auto light information, and the like, and according to the determined running scene. Adjust the correspondence between the predetermined rain level and the predetermined wiping level. As an example of such an adjustment, a link pattern for linking table 1 (rainfall level) and table 2 (wiping state) as shown in FIG. 2 is determined, and the determined link pattern is determined. The ID is output as identification information for identifying the session.
- the link unit 46 selects a specific link pattern from the plurality of link patterns based on the identification information output by the scene disassembly unit 44, and performs rainfall according to the selected link pattern.
- the level item and the wiping level item are linked.
- the scene disassembly section 44 includes a status management section 441, an entity scheduler 442, a pattern table management section 4444, and a pattern scheduler 4464. Including.
- the status management unit 441 manages a status composed of a current vehicle state and a current driving environment state. Specifically, the current vehicle state (stop, running, acceleration, deceleration, etc.) is determined from vehicle speed information. In addition, the current driving environment condition is judged from the rainfall level, auto light information, etc.
- the state of the driving environment is, for example, a rainy state (a sunny state or a rainy state) or a light and dark state. This rain state is determined from the rain level.
- the light / dark state is determined from, for example, auto light information and position information of a light switch.
- the status management unit 441 selects the current status from the status information table as shown in FIG. 6 based on the determined current vehicle status and the current driving environment status.
- the status management unit 441 selects one address according to the combination of the vehicle state and the driving environment. If the status has changed, the address of the status after the change is selected.
- the entity scheduler 4 4 2 determines the status determined by the status management unit 4 4 1 from among the plurality of entities. Activate only entity 4 4 3 linked to. As shown in FIG. 6, since the unique entity information is linked to each status address, only the entity 443 linked to the current status is identified and activated. Specifically, one or more specified entities are identified and activated based on the entity ID included in the entity information.
- the pattern table management unit 444 selects and sets the pattern table 445 linked to the status determined by the status management unit 441 from a plurality of pattern tables. I do. As shown in Fig. 6, each status address is linked with a unique table information, so that only the pattern table 445 linked to the current status can be identified and monitored. Set as a target. Specifically, one or more specified pattern tables are identified and selected by the pattern table ID included in the pattern table information.
- a plurality of entities should be provided according to the number of events to be detected. Each entity should then monitor for unique events. For example, the acceleration detection entity detects an event of vehicle acceleration. The clear state detection entity also detects events that have stopped raining and are now clear. The tunnel entry detection entity detects an event that a vehicle has entered a tunnel. Then, depending on the status, the entity scheduler 442 activates only a specific entity from among a plurality of entities. Each of the entities included in the activated entity 443 has a function of detecting occurrence of a predetermined event and registering the detected event in a set pattern table 445.
- Such events can be detected from provisional rainfall level information, vehicle speed information, auto light information, and the like.
- the tee has a timer, which includes the concept of time, such as an event in which a specific situation (for example, the stoppage of rainfall) has continued for a predetermined period or an event in which the speed has changed by a predetermined amount during a predetermined period. The event that is satisfied can be detected.
- Each pattern table corresponds to a unique link pattern, and is provided in the same number as the number of link patterns.
- Each pattern table has a pattern of an event registration protocol corresponding to a driving scene to be determined, and a specific driving scene is detected when all the event registration blocks of the specific pattern table are filled. .
- a plurality of such pattern tables may be provided in accordance with the traveling scene to be detected. Then, a predetermined pattern table is selected from the plurality of pattern tables by the pattern table management unit 444 and set as a monitoring target.
- the pattern table 445 set by the pattern table management unit 444 has one or a plurality of event registration blocks for registering events.
- Various unique patterns are set by masking arbitrary blocks.
- a unique pattern may be set by adding identification information such as ID for identifying a specific event to each event registration block so that only unique events are registered.
- the pattern scheduler 4 4 6 Monitor the event table, detect the pattern table in which the event is registered in all event registration blocks, and output the ID assigned to the detected pattern table. This ID is information that identifies the link table. It should be noted that the pattern scheduler 444 and the pattern table management unit 444 described above may be combined so that one pattern scheduler has both functions.
- the link unit 46 selects a specific link pattern based on the ID output by the pattern scheduler 446, and performs rainfall according to the selected link pattern. Link the item of the level and the item of the wiping state. As shown in Fig. 7, different link patterns are set for each link pattern, and appropriate link patterns can be adjusted by selecting an appropriate link pattern according to the driving scene. .
- the entity scheduler 4 4 2 was provided to activate only the entities required for the current status. However, if the event registration block of the pattern table accepts only a specific event, all the entities may be operated at the same time. Therefore, a configuration in which the entity scheduler 442 is omitted may be adopted.
- the entity scheduler 4 42 by providing the entity scheduler 4 42, the same control can be realized while limiting the number of simultaneously operating entities. This is because the events that need to be monitored change over time, and it is not necessary to activate all entities. For example, if the status is running, it is necessary to detect the event of stopping, but there is no need for an entity to detect the event of starting from stopping. In addition, when the status is sunny, the events to be detected are rainfall, fog adhesion, continuation of sunnyness, etc., and there is no need to activate the entity that detects the event that rainfall stops. . By providing the entity scheduler 442 in this way, the number of simultaneously operating entities can be reduced, and the resources required for processing can be reduced.
- FIG. 8 is a flowchart for explaining the operation of the first embodiment.
- the status management unit 441 determines the current status and selects the corresponding address in the status information table. For example, if the rain level has changed, it may be determined based on the reference rain level. This is because rainfall in the natural world changes, and if the status changes following a temporary change, the behavior of the wiper becomes unstable. Therefore, for example, the status is changed when the reference rain level changes from sunny to a certain rain level.
- the entity scheduler 442 receives the entity information linked to the address of the status information table selected by the status management section 441, identifies the specified entity, and Start.
- the pattern table management unit 444 receives the pattern table information linked to the address of the status information table selected by the status management unit 441, Select the specified pattern table and set it as a monitoring target.
- the activated entity detects its own event and registers the detected event in the pattern table.
- the event registration block to which the event is assigned is targeted. If there are multiple entities, the detection of such events and the registration of the detected events are performed for each entity.
- the non-degree scheduler 446 detects a pattern table in which events are registered in all event registration blocks. Then, in step 211, the ID assigned to the detected pattern table is output.
- step 214 the link unit 46 selects the specified link pattern from the plurality of link patterns based on the ID output by the pattern scheduler 446. Then, the table of the rainfall level and the table in the wiping state are linked by the selected link pattern.
- the wiper drive signal generator 48 applies the provisional rain level generated by the rain level generator 32 to a rain level table as shown in FIG.
- the wiping state of the wiper is determined by selecting the attached specific wiping level, and a wiper drive signal having a predetermined wiping standby time and a predetermined wiping speed is output.
- the embodiment of the present invention it is possible to determine the current traveling scene based on the occurrence of a specific event, and select a link pattern corresponding to the determined traveling scene.
- a link pattern corresponding to the determined traveling scene.
- the inside of the tunnel will be wiped at a slightly lower wiping level for fine raindrops caused by rolling up the vehicle ahead.
- the status before entering the tunnel is that the rainfall is more than a predetermined amount and the traveling speed is constant.
- the events to be detected are the event that the rainfall has decreased rapidly due to the tunnel approach, and the event that the reduction has continued for a predetermined time. Also, if there is auto light information, it is an event that the auto light system judges the turning on of the headlights (including vehicle side lights) by entering the tunnel.
- the pattern table management unit 444 selects and sets a pattern table including an event registration block for registering these events.
- the entity scheduler 442 activates an entity that detects these events. Then, the activated entity detects its own event and registers it in the pattern table, and in the evening when all the event registration blocks are registered, the pattern scheduler 4446 attaches to the pattern table. Outputs the ID.
- the link section 46 selects a predetermined link pattern based on the output ID, and links the rainfall level table and the wiping state table. '' In this case, the selected link pattern has a high wiping level for rainfall above a certain level, and a low wiping level for light rain such as rolling up. Have been.
- the status before the start is that the rainfall is equal to or more than the predetermined amount and the traveling speed is zero.
- the events to be detected are the event that the rainfall has not changed suddenly, and the event that the rain has accelerated after stopping.
- the pattern table management unit 444 selects and sets a pattern table including an event registration block for registering these events.
- the entity scheduler 442 activates an entity that detects these events. Then, the activated entity detects its own event and registers it in the pattern table, and in the evening when all the event registration blocks are registered, the pattern scheduler 4446 is attached to the pattern table. Output ID.
- the link section 46 selects a predetermined link pattern based on the output ID, and links the rainfall level table and the wiping state table.
- the selected link pattern is set at a higher wiping level than at the time of shutdown, relative to the overall rainfall level.
- the driving environment is a constant rainfall condition and the vehicle is decelerating from a condition where the vehicle is traveling at a constant constant speed, it is necessary to change the wiping level to a lower wiping level than the set wiping level.
- the status before deceleration is that the rainfall is equal to or greater than a predetermined amount and the traveling speed is constant.
- the events to be detected are that the rainfall has not changed suddenly, and that the vehicle speed has decreased to a certain low speed. Therefore, the pattern table management unit 444 selects and sets a pattern table provided with an event registration block for registering these events.
- the entity scheduler 4 42 activates an entity that detects these events. Then, the activated entity detects its own event and registers it in the pattern table, and at the timing when all the event registration blocks are registered, the pattern scheduler 4446 attaches to the pattern table. Outputs the ID.
- the link unit 46 selects a predetermined link pattern based on the output ID, and links the table of the rainfall level with the table in the wiping state.
- the selected link pattern is set to a lower wiping level than the running level with respect to the entire rainfall level.
- the wiping level needs to be exceptionally increased relative to the total rainfall level to avoid danger.
- an emergency wiping state to avoid danger is provided above the level of the high-speed continuous wiping in the wiping state. And it is good to link to this wiping state.
- the event to detect is rapid acceleration.
- the entity for rapid acceleration detection may always be activated. And it is good to always set the pattern table for sudden acceleration.
- the pattern scheduler 446 outputs the ID attached to the pattern table only by registering the event, and the entire rainfall level is linked to the emergency wiping. Is done.
- the wiping level must be exceptionally increased relative to the total rainfall level to avoid danger.
- an emergency wiping state for avoiding danger is provided above the level of high-speed continuous wiping in the wiping state. And it is good to link to this wiping state.
- the status before the rapid deceleration is traveling, and the event to be detected is rapid deceleration.
- the sudden deceleration detection entity may always be activated. And it is good to always set the pattern table for sudden deceleration.
- the pattern scheduler 446 outputs the ID attached to the pattern table only by registering the event, and the entire rainfall level is linked to the emergency wiping. Is done.
- the status before sunny is rain.
- the event to be detected is an event that a certain time has passed without rainfall. This certain period of time should be, for example, a long period of several minutes to ensure that the rain has stopped.
- the link pattern selected is such that a high wiping level is set for levels where large raindrops are continuously deposited and a low wiping level is set for small waterdrops. Belt is set.
- the correspondence between the rainfall level and the wiping level is controlled as the wiping determination condition.
- the second embodiment of the present invention provides that the detection sensitivity of the raindrop is reduced. This is controlled as a wiping determination condition.
- FIG. 9 is a conceptual diagram illustrating a second embodiment of the present invention.
- the correspondence between each item of the rainfall level in Table 1 and each item of the wiping level in Table 2 is changed.
- the correspondence between each item of the rainfall level in Table 1 and each item of the wiping level in Table 2 is fixed, It adjusts the detection sensitivity for raindrops attached to the detection surface.
- the degree to which raindrops adhering to the windshield obstruct the driver's view varies depending on the external brightness of the vehicle. Specifically, in bright daylight, attached raindrops are easily recognized, and relatively small raindrops tend to obstruct the visual field in a short time. On the other hand, when it is dark at night, the attached raindrops It was confirmed that it took a longer time for similar small-sized raindrops to obstruct the field of view, because it was difficult to recognize them.
- the detection sensitivity for raindrops having a small particle size of a certain level or less may be increased, and when the outside of the vehicle is dark, the detection sensitivity may be decreased for similar raindrops.
- the detection sensitivity for raindrops attached to the detection surface is adjusted according to the traveling scene.
- FIG. 10 is a block diagram illustrating the configuration of the wiper control device according to the second embodiment of the present invention in a layer structure.
- the wiper control device according to the second embodiment of the present invention can be represented by a configuration of three layers.
- the third layer includes the rainfall level generator 32, the sensitivity controller 34, and the wiper drive signal generator 48, and the fourth layer does not exist. These units can be realized by software.
- the sensitivity control unit 34 uses control information such as vehicle speed information, rainfall level information, auto light information, light switch position information, and timer. To determine the traveling scene, and control the detection sensitivity for the attached raindrops according to the determined traveling scene.
- the sensitivity control unit 34 includes a rain level generated by the rain level generation unit 32, vehicle speed information detected by the vehicle information detection unit 24, auto light information, light switch position information, and the like.
- the running scene is determined from, and the raindrop detection sensitivity is adjusted according to the determined running scene. If a sensitivity film has been set, adjust the raindrop detection sensitivity in consideration of the sensitivity film as necessary.
- the sensitivity control unit 34 has the traveling scene determination function and the detection sensitivity adjustment function.
- the method of adjusting the detection sensitivity of raindrops is to detect the attachment of raindrops themselves,
- the evaluation for the detected raindrop may be changed. Specifically, the rain level associated with the detected raindrop may be changed. For example, the rainfall level corresponding to the detected raindrop having a certain small particle size may be lowered.
- the detection sensitivity may be configured not to detect the attachment of raindrops having a predetermined particle size or less. For example, by increasing the threshold value for the signal change caused by the attachment of raindrops, a signal change that does not exceed the threshold value (that is, attachment of raindrops having a predetermined particle size or less) may not be detected. Also, the output signal of the light receiving element may be reduced by lowering the driving current value of the light emitting element so that the signal change due to the attachment of raindrops having a predetermined particle size or less may not appear or may be small. It is preferable to lower the drive current value because the life of the LED, which is a light emitting element, can be extended. This is because LED life is inversely proportional to the magnitude of the drive current.
- the rain level generator 32 generates a rain level after the control of the sensitivity controller 34 as described above.
- the specific method of generating rainfall levels is the same as described above.
- the wiper drive signal generation unit 48 since the correspondence between the rain level and the wiping level is fixed, the wiper drive signal generation unit 48 generates the rain level generated by the rain level generation unit 32.
- the wiping state corresponding to the rain level is determined based on the rain level, and a wiper drive signal having a predetermined wiping standby time and a predetermined wiping speed is output.
- the sensitivity control unit 34 determines a traveling scene. Specifically, it detects an event that the vehicle exterior is bright and the vehicle is dark. This can be detected from the information that the auto light system has determined that the headlights (including the side lights) have been turned on, or from the position information of the light switch. In response to this running scene that the outside has become dark, the sensitivity control unit 34 lowers the detection sensitivity for raindrops having a predetermined small particle size. This is the rainfall associated with the raindrop. The rain level may be lowered, and the attachment of the raindrop itself may not be detected.
- the correspondence between the rainfall level and the wiping level is controlled as the wiping determination condition.
- the raindrop detection sensitivity is controlled as the wiping determination condition.
- the third embodiment of the present invention controls both of them as wiping determination conditions.
- the second embodiment adjusts the detection sensitivity for raindrops attached to the detection surface.
- both of them may be used. In other words, the detection sensitivity for raindrops adhering to the detection surface is adjusted according to the driving scene, and the correspondence between each item of the rainfall level and each item of the wiping level is adjusted according to the driving scene. You may make it fluctuate.
- FIG. 11 is a block diagram illustrating a configuration of a wiper control device according to a third embodiment of the present invention using a layer structure.
- the wiper control device according to the third embodiment of the present invention can be represented by a configuration of four layers.
- the third layer includes a rainfall level generator 32 and a sensitivity controller 34
- the fourth layer includes a wiping state controller 42 and a wiper drive signal generator. 4 8 are included.
- the specific functions of these units are the same as those described above, and thus description thereof will be omitted.
- the wiping determination conditions can be automatically switched in response to the situation of a scene change, and a wiper operation more suited to the driver's feeling can be realized.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04732797A EP1623897A4 (en) | 2003-05-15 | 2004-05-13 | METHOD AND DEVICE FOR CONTROLLING A WIPER |
US10/557,071 US20070085504A1 (en) | 2003-05-15 | 2004-05-13 | Method and device for controlling wiper |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003136879A JP4259915B2 (ja) | 2003-05-15 | 2003-05-15 | ワイパー制御方法、およびワイパー制御装置 |
JP2003-136879 | 2003-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004101332A1 true WO2004101332A1 (ja) | 2004-11-25 |
Family
ID=33447239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/006780 WO2004101332A1 (ja) | 2003-05-15 | 2004-05-13 | ワイパー制御方法、およびワイパー制御装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070085504A1 (ja) |
EP (1) | EP1623897A4 (ja) |
JP (1) | JP4259915B2 (ja) |
KR (1) | KR20060023125A (ja) |
WO (1) | WO2004101332A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009055399A1 (de) * | 2009-12-30 | 2011-07-07 | Robert Bosch GmbH, 70469 | Scheibenwischvorrichtung |
KR102326207B1 (ko) * | 2017-05-31 | 2021-11-17 | 현대자동차주식회사 | 차량 및 차량의 제어방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61191961U (ja) * | 1985-05-23 | 1986-11-29 | ||
JPS6271071U (ja) * | 1985-10-24 | 1987-05-06 | ||
JP2001526149A (ja) * | 1997-12-19 | 2001-12-18 | ダイムラークライスラー アクチエンゲゼルシャフト | ガラスウィンドウワイパ装置用制御装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990008680A2 (de) * | 1989-01-26 | 1990-08-09 | Etablissement Voralp | Einrichtung für die steuerung eines antriebsmittels für ein fahrzeugzubehör |
DE3926175C1 (ja) * | 1989-08-08 | 1990-09-13 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
DE4134432A1 (de) * | 1991-10-18 | 1993-04-22 | Daimler Benz Ag | Verfahren zur anpassung der ansprechempfindlichkeit eines niederschlagssensorsystems an umgebungsverhaeltnisse und sensorsystem mit einem niederschlagssensor |
DE19723859A1 (de) * | 1997-06-06 | 1998-12-10 | Bosch Gmbh Robert | Vorrichtung zum Erfassen einer Benetzung einer Scheibe |
KR19990063054A (ko) * | 1997-12-17 | 1999-07-26 | 마쯔무라 미노루 | 레인 센서의 출력 안정화방법 및 보호방법 |
-
2003
- 2003-05-15 JP JP2003136879A patent/JP4259915B2/ja not_active Expired - Fee Related
-
2004
- 2004-05-13 US US10/557,071 patent/US20070085504A1/en not_active Abandoned
- 2004-05-13 KR KR1020057021804A patent/KR20060023125A/ko not_active Application Discontinuation
- 2004-05-13 EP EP04732797A patent/EP1623897A4/en not_active Withdrawn
- 2004-05-13 WO PCT/JP2004/006780 patent/WO2004101332A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61191961U (ja) * | 1985-05-23 | 1986-11-29 | ||
JPS6271071U (ja) * | 1985-10-24 | 1987-05-06 | ||
JP2001526149A (ja) * | 1997-12-19 | 2001-12-18 | ダイムラークライスラー アクチエンゲゼルシャフト | ガラスウィンドウワイパ装置用制御装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1623897A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1623897A4 (en) | 2006-06-14 |
US20070085504A1 (en) | 2007-04-19 |
EP1623897A1 (en) | 2006-02-08 |
JP4259915B2 (ja) | 2009-04-30 |
JP2004338524A (ja) | 2004-12-02 |
KR20060023125A (ko) | 2006-03-13 |
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