CN101811082B - A shredding machine and method therefor - Google Patents
A shredding machine and method therefor Download PDFInfo
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- CN101811082B CN101811082B CN201010002958.6A CN201010002958A CN101811082B CN 101811082 B CN101811082 B CN 101811082B CN 201010002958 A CN201010002958 A CN 201010002958A CN 101811082 B CN101811082 B CN 101811082B
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Abstract
This invention discloses a shredding machine having a feed inlet and a shredding mechanism built in the shredding machine body. The feed inlet is used for containing at least one article that passes through it. The driven shredding mechanism is used for shredding at least one article that is sent into it. At least a LED acting as a sensor emits and detects radiation level when operating on a forward-bias direction and a reverse-bias direction. The LED is used for detecting at least one article that is existed in the feed inlet or the amounts of shredding grain in the container or in the box. The LED communicates with the controller to operate the shredding mechanism. The controller also calibrates the radiation intensity to a predetermined valve above or within the minimum level so as to reduce the wearing and succeeded state.
Description
related application
The application is the U.S. Patent application No.12/252 submitting on October 15th, 2008, and 158 part continues, and requires its priority, and this application is all combined in this by reference.
Technical field
The present invention relates generally to a kind of shredding machine, this shredding machine has at least one light emitting diode (LED) as transmitter and detector, to help to be identified for to shred the operation of the cutter elements of article.
Background technology
The shredding machine of general type has shredder mechanism, and this shredder mechanism is included in housing and is arranged on the top of container.Shredder mechanism typically comprises cutting head assembly, and cutting head assembly comprises a series of cutter elements, and these cutter elements choppings are admitted to article wherein, as paper, CD, DVD, credit card etc., and the article of chopping are discharged in container downwards.The example of this shredding machine can be for example at United States Patent (USP) 7,040, finds in 559, and this patent is all combined in this by reference.
When user sends in shredder mechanism by article, can provide sensor to survey existing of these article, activate thus shredder mechanism with chopping article.Also can provide one or more sensors to come exploration vessel whether to be full of article chopped.Conventionally use optical pickocff, because they do not have movable part.Yet, the optical pickocff using in shredding machine for example preferably has the electrical characteristics of wide region and/or sensitivity, (to survey the article of wide region and medium, and during sensor life-time, be not provided for activating the acknowledge signal of any falseness of shredder mechanism the article of shades of colour, material).For example, the driving signal of sensor must provide sensitive luminous intensity to survey paper and CD and/or article chopped.
The exemplary of optical pickocff comprises having for transmitting and be used for surveying light such as infrared (IR) wave beam or those sensors of the discrete component of radiation.Such sensor needs wave beam between transmitter and detector, to interrupt (that is, disconnect) to carry out sense conditions.Alternatively, can use reflection sensor (for example, surveying the light of reflection or the reflection sensor of wave beam), it can use simple sub-assembly rather than discrete element.In any case, to the improvement of the cost of the sensor using in shredding machine, assembling and structure, will be useful.
Summary of the invention
One aspect of the present invention provides a kind of shredding machine, described shredding machine comprise there is charging aperture (throat) shredding machine housing and be contained in the shredder mechanism in described housing, described charging aperture is for receiving at least one article to be shredded by this charging aperture.Described shredder mechanism comprises motor and cutter elements, and described at least one article to be shredded can be admitted in described cutter elements.Described motor can be used in chopping direction and drives described cutter elements, makes described cutter elements that described at least one article that are admitted to are wherein chopped into particle.Described shredding machine also comprises at least one light emitting diode that can be used as sensor operation.Described at least one photodiode sensor is configured to when operating, be used as transmitter in forward bias direction, and is configured to when operating in reverse bias direction as detector.Controller is coupled to described sensor and described shredder mechanism, and is configured to make the input of described light emitting diode to replace between described forward bias direction and described reverse bias direction.Described controller also can be used to the operation that described shredder mechanism is controlled in the radiation detecting based on described sensor.
Another aspect of the present invention comprises a kind of shredding machine, and described shredding machine comprises having the shredding machine housing of charging aperture and be contained in the shredder mechanism in described housing, and described charging aperture is for receiving at least one article to be shredded by this charging aperture.Described shredder mechanism comprises motor and cutter elements, and described at least one article to be shredded can be admitted in described cutter elements.Described motor can be used in chopping direction and drives described cutter elements, makes described cutter elements that described at least one article that are admitted to are wherein chopped into particle.Described shredding machine also comprises for receiving the container of chopping particle.A series of light emitting diodes are set in described shredding machine, and described a series of light emitting diodes are oriented to receive from being deposited in the radiation of described chopping particle reflection the intensity of definite radiation of reflecting described container.Described intensity is corresponding to the amount that is deposited in the chopping particle in described container.Equally, described a series of light emitting diodes are configured to when operating, be used as transmitter in forward bias direction, and are configured to when operating in reverse bias direction as detector.Controller is coupled to described a series of light emitting diode and described shredder mechanism, and is configured to make the input of described a series of light emitting diodes to replace between described forward bias direction and described reverse bias direction.Described controller can be used to the operation that described shredder mechanism is controlled in detection based on described sensor.
Another aspect of the present invention provides a kind of method of carrying out in shredding machine, described shredding machine comprises having the shredding machine housing of charging aperture and be contained in the shredder mechanism in described housing, and described charging aperture is for receiving at least one article to be shredded by this charging aperture.Described shredder mechanism comprises motor and cutter elements, and described at least one article to be shredded can be admitted in described cutter elements.Described motor can be used in chopping direction and drives described cutter elements, makes described cutter elements that described at least one article that are admitted to are wherein chopped into chopping particle.Described shredding machine also comprises at least one light emitting diode that can be used as sensor operation, described at least one photodiode sensor is configured to when operating, be used as transmitter in forward bias direction, and is configured to when operating in reverse bias direction as detector.Controller is coupled to described sensor and described shredder mechanism, and is configured to make the input of described light emitting diode to replace between described forward bias direction and described reverse bias direction.Described controller can be used to the operation that described shredder mechanism is controlled in the radiation detecting based on described sensor.Described method comprises: the described input of described light emitting diode is replaced between described forward bias direction and described reverse bias direction; Utilize described light emitting diode to survey the radiation of reflection; And utilizing described controller, the operation of described shredder mechanism is controlled in the radiation detecting based on described light emitting diode.
Other side of the present invention, feature and advantage will become clear from the following detailed description, accompanying drawing and appending claims.
Accompanying drawing explanation
Fig. 1 is the top perspective view that comprises at least one sensing apparatus chopper apparatus of constructing according to one embodiment of present invention;
Fig. 2 is the exploded perspective view of Fig. 1;
Fig. 3 is the detail perspective view of downside of the shredding machine housing of chopper apparatus, and this chopper apparatus comprises at least one sensing apparatus according to an embodiment of the invention;
Fig. 4 is the detail perspective view of downside of the shredding machine housing of chopper apparatus, and this chopper apparatus comprises one or more sensor according to an embodiment of the invention;
Fig. 5 a-5c illustrates circuit diagram, and these circuit diagrams represent according to one embodiment of present invention, with light emitting diode, as sensor, launches the step with probe radiation;
Fig. 6 is the controller of shredding machine according to an embodiment of the invention and interactional the schematically illustrating between other parts;
Fig. 7 is the flow chart of the method for calibrating sensors according to an embodiment of the invention;
Fig. 8 illustrates flow chart, shows to determine to carry out to actuation sensor the method for calibration, and
Fig. 9 illustrates flow chart, and showing to determine need to be to the method that chest is full of or the execution of level of waste sensor is calibrated.
The specific embodiment
Following examples are described with reference to accompanying drawing, and are never limited in their scope.
Fig. 1 is the top perspective view of the chopper apparatus 10 of constructing according to one embodiment of present invention.Shredding machine 10 is designed to destroy or the article of chopping such as paper, paper product, CD, DVD, credit card and other object.In one embodiment, shredding machine 10 can comprise that wheel (not shown) is to help mobile shredding machine 10.Shredding machine 10 comprises shredding machine housing 12, and this shredding machine housing 12 is placed on the top of container 18 for example.
Generally speaking, shredding machine 10 can have any suitable structure or configuration, and the illustrated embodiment providing is here not intended to limit by any way.In addition, run through the term being used interchangeably " shredding machine " of this description or the device that " chopper apparatus " is not intended to be limited to literal upper " chopping " document and article, but replace intention, cover by making document and article almost illegible and/or useless mode destroy any device of these documents and article.
As mentioned, shredding machine 10 is also included in the shredder mechanism 20 (being illustrated in Fig. 2 in general manner) in shredding machine housing 12.When article are inserted at least one feed opening or charging aperture 14, they are directed towards and enter shredder mechanism 20." shredder mechanism " is to use at least one cutter elements to destroy the general structural term of the device of article for representing.Destruction can be carried out with any ad hoc fashion.Shredder mechanism 20 comprises drive system 32 (being illustrated in Fig. 2 in general manner) and a plurality of cutter elements 21 (seeing Fig. 3), and this drive system 32 has at least one motor 34 such as electro-motor.Cutter elements 21 is arranged on pair of parallel installation shaft (not shown).Motor 34 uses electric power operation, to drive rotationally the first and second rotatable shafts and the corresponding cutter elements 21 thereof of shredder mechanism 20 by conventional transmission device 36, thereby cutter elements 21 chopping or destroy and be admitted to material or article wherein, then through outlet opening 16 by the material stacking of chopping in the opening 15 of container 18.Shredder mechanism 20 can also comprise for for example axle, motor and transmission device being installed to the subframe 31 in housing 12.Drive system can have the motor of any amount, and can comprise one or more transmission devices.And a plurality of cutter elements 21 can be arranged on the first and second rotatable shafts in any suitable manner.For example, in one embodiment, cutter elements 21 is rotated with false relation so that chopping is admitted to paper and other article wherein.In one embodiment, cutter elements 21 can be related to setting with stacking (stacked).Operation and the structure of such shredder mechanism 20 are known, and needn't at length discuss here.Like this, at least one feed opening or charging aperture 14 are configured to receive and are inserted into material wherein, to be fed to this material through shredder mechanism 20, and are piled up or are discharged material chopped by outlet opening 16.
In one embodiment, container 18 can be arranged in the framework of shredding machine housing 12 belows.For example, this framework can be used for supporting shredding machine housing 12, and comprises the space that holds container, thereby container 18 can therefrom take off.For example, in one embodiment, container 18 can be arranged to respect to framework, slide, be hingedly installed on framework or comprise pedal or device with pedal, to help pulling or take off container from framework as drawer.Container 18 can comprise opening, handle or recess 17 so that user can catch chest (or catching the region that approaches recess 17), thereby provide make region that user easily catches with by container 18 from 12 separation of shredding machine housing, thus can access (access) shredding material.Container 18 can take off substantially or completely, and no longer in the mode of operation together with shredding machine housing 12, to empty the shredding material being positioned at wherein, such as fragment or band (that is, refuse or waste material).In one embodiment, in order to consider article accumulation therein, container or chest 18 can comprise one or more access aperture (not shown).
Usually, term " container ", " litter-bin " and " chest " are defined for the device of receiving the shredding material discharging from the outlet opening 16 of shredder mechanism 20, and such term is used interchangeably in whole description.Yet such term should not be restrictive.Container 18 can have any suitable structure or configuration.
Typically, to the supply of electric power of shredding machine 10, will be reference power supply line 44, this power line 44 has the plug 48 inserting in standard A c-power supply socket on its end.And, can provide control panel to use together with shredding machine 10.Conventionally, the use of control panel is known in the prior art.As shown in fig. 1, can provide power switch 100 or a plurality of switch to control the operation of shredding machine 10.Power switch 100 can be arranged on the upside 24 of shredding machine housing 12 for example, or on shredding machine 10 other Anywhere.Upside 24 can have switch recess 28, and this switch recess 28 has the opening through it.On/off switch 100 comprises switch module (not shown) and manual engageable (engageable) part 30, this switch module is installed on recess 28 housing 12 below by fastener, and this manual engageable part 30 is at the interior transverse shifting of recess 28.Switch module has moving element (not shown), and this moving element is connected in manual engageable part 30, so that switch module moves between its state.The movement of the manual engageable part of switch 100 is moved switch module between state.In explanation embodiment shown in Fig. 2, switch module is connected to motor 34 on power supply.This connection can be directly or indirectly, as via controller 56 connects (as shown in Fig. 6).Term " controller " has device or the microcontroller of CPU (CPU) and input/output device for definition, this input/output device is for monitoring from the parameter that is operationally couple to the device of controller.Input/output device also allows CPU and the device (for example,, such as sensor 50 or motor 34) that is operationally couple to controller to communicate and it is controlled.General known in prior art, controller can comprise the storage medium such as internal memory or memory of any amount alternatively, for monitoring or control the sensor that is couple to controller.
Switch module comprises the suitable contact for the position of the manual engageable part of switch is sent with signal.As selection, switch 100 also can have reverse position, and this reverse position signals so that by reverse manner operation motor 34 to controller 56.This realizes by using reversible motor and applying the electric current that has opposite polarity with respect to logical position.For example, for motion cutter elements in the opposite direction 21 is blocked to remove, by the ability of reverse manner operation motor 34, be desirable.For each in above-mentioned position is provided, switch 100 can be slide switch, rotary switch or rocker switch.And switch 100 can be push switch type, this switch is depressed simply so that a plurality of states of controller 56 circulation process.In addition, controller 56 (for example can be determined, through one or more sensors 50) do not dispose article in charging aperture 14, thus operate in the opposite direction motor 34 (for example operating like this short time period) to remove any remaining article (or its each several part) from the charging aperture 14 of shredding machine 10.
Usually, be used for controlling the switch 100 of motor and structure and the operation of controller 56 are known, and can use any structure for them.For example, touch-screen switch, thin film switch or toggle switch are other examples of operable switch.And switch needn't have the diverse location corresponding with on/off/free time/oppositely, these states can be the states of selecting in controller by console switch.Free position also can be used up as signal and be represented, on display screen, with signal indication or by other mode, represents.
As mentioned, shredding machine 10 can have one or more actuation sensor 50 and/or one or more level of waste or chest and is full of sensor 72.Actuation sensor 50 transmitting and probe radiation, and can be used to the variation of the radiation based on being detected by sensor and survey existence or the insertion of at least one article.In some cases, the variation detecting like this can be inserted in charging aperture and be caused by article.As will be described further, one or more actuation sensor 50 can be the monomer dual function apparatus for transmitting and probe radiation, such as light emitting diode or LED.Alternatively, actuation sensor comprises a plurality of LED.Radiation can include but not limited to visible ray, infrared (IR) light and ultraviolet light or its any combination.
As shown in Figure 1, one or more actuation sensor 50 can be arranged in charging aperture 14.For example, sensor 50 can be positioned under upper wall 24, and on the cutter elements 21 of shredder mechanism 20.Yet the position of sensor 50 should not be restricted.Sensor 50 can be arranged on the position of any amount relevant with shredding machine housing 12 or shredder mechanism 20.For example, for surveying one or more actuation sensor 50a and/or the 50b of at least one existence for the treatment of mince product, can be arranged on charging aperture 14, near around it, it or the replaceable position being adjacent.In certain embodiments, actuation sensor 50a can be arranged near the right side or left side of charging aperture 14 for example.In certain embodiments, actuation sensor 50b can be arranged on the end of charging aperture 14 or near it.In addition, a plurality of sensors (for example, at center, below entrance, in side, in end) can be arranged in charging aperture 14, around it, near it or be adjacent, and can expect.In addition, actuation sensor 50 can be arranged on the position above cutter elements 21 in shredder mechanism 20.In some instances, element also can be mounted to and face with each other, the spitting image of existing transmitter and receiver sensor.For example, if desired, LED can install in such a way, for example, to determine whether there is state variation (, block/do not block) clearly when article or paper are inserted in charging aperture 14.
For example, suppose that switch 100 is in for example logical (or idle) position, when paper or article are inserted in charging mouth 14, controller 56 drives cutter elements 21 by driven motor 34 in chopping direction, enables the operation of shredder mechanism 20.The use of actuation sensor 50 is desirable, because it allows user to make shredding machine 10 ready by switch 100 being moved to its logical position, but until sensor 50 detects existence or the insertion of one or more article in charging aperture 14, controller 56 just operates shredder mechanism 20 and starts chopping.Once at least one article has passed into shredder mechanism 20 and crossed actuation sensor 50, controller 56 just will stop motion or the rotation of the cutter elements 21 of shredder mechanism 20, because this correspondence article, has been completely fed into and has been shredded.Typically, before stopping shredder mechanism 20, use time delay slightly, such as 3-5 second, to guarantee that article have been shredded by cutter elements 21 completely and to discharge from shredder mechanism 20.The use of this actuation sensor 50 is useful, because it allows user carry out a plurality of chopping tasks and can not make shredder mechanism 20 operate and produce noise between task.It has also reduced the wearing and tearing of shredder mechanism 20, because it only just operates when sheet material is admitted to wherein, and can not operate continuously.With reference to Fig. 5 a-5c, provide further describing about the existence of the LED how to confirm article of actuation sensor 50.
In certain embodiments, shredding machine 10 can comprise that one or more level of waste or chest are full of sensing apparatus 72, all as shown in Figures 3 and 4.Level of waste sensor 72 also comprises for launching the monomer device with probe radiation.Level of waste sensor 72 comprises one or more light emitting diodes (LED).The radiation that sensor 72 is launched can comprise light, infra-red radiation and/or the ultra-violet radiation in visible spectrum.The chopping particle of discharging and being accumulated in container or chest 18 by shredder mechanism 20 will be surveyed by sensing apparatus 72.LED sensor 72 can be arranged in a plurality of positions of shredding machine 10.For example, in certain embodiments, shredding machine 10 can comprise one or more sensing apparatus 72, as shown in Figures 3 and 4.LED sensing apparatus 72 is oriented to for container or chest 18 transmitting and probe radiation.In certain embodiments, a plurality of sensors 72 or series of LED can be arranged by isolated relation.Usually, the LED sensing apparatus 72 of any amount can be set, and can install in many ways, should not be therefore restrictive.
More particularly, one or more level of waste/chest is full of on the diapire or downside 26 that LED sensing apparatus 72 can be arranged on shredding machine housing 12.In certain embodiments, sensing apparatus 72 can be arranged near outlet opening 16 or charging aperture 14 or be adjacent, as described in Fig. 3.In certain embodiments, the one or more sensors 72 that are installed on the downside 26 of housing 12 are concordant with the diapire of downside 26.In certain embodiments, one or more sensor 72a are arranged on from diapire or downside 26 to the structure 78 of downward-extension, as shown in Figure 4.In some cases, for example, as shown in Figure 4, array pressed by a plurality of LED sensors 72 or series arranges, such as pressing horizontal line setting---and as represented in 72b, or arrange by a series of row or certain shape---as represented in 72c.
When a plurality of sensor 72 is set, these elements can be relatively very closely, be mounted adjacent one another.In some instances, degree of closeness may depend on the characteristic (for example, visual angle, luminous intensity, etc.) of the distance (for example, the distance of 18 bottoms from sensor to container) that will survey and/or LED itself.When LED sensor 72 is installed by this way, these elements can work together (for example, seeing radiation or light from other LED).In some instances, these elements also can be mounted to and face with each other, the spitting image of existing transmitter and receiver sensor.For example, if desired, LED can install in such a way, for example, to have determined whether state variation (, block/do not block) clearly.
Alternatively, although not shown, sensor 72 can be arranged on one or more sidewalls of container 18 or with any alternate manner and install, to emit radiation in container 18.In some instances, sensing apparatus 72 can be arranged on one or more sidewalls of container 18, for example, near top 19.Therefore, the position of sensing apparatus 72 or to install should not be restrictive, thus this configuration makes sensor 72 can sensing enter the refuse opening of chest 18 or the chopping particle of accumulation therein.
Sensing apparatus 72 is regardless of its position, all for determining that chest or container 18 are accumulating or be full of chopping particle.Level of waste or chest are full of sensor 72 and are also operably connected to shredder mechanism 20.For example, when user shreds article, chopping particle is discharged (for example, entering container 18) by shredder mechanism 20 by opening 16.Along with the accumulation of chopping particle, accumulation or level that sensing apparatus 72 shreds particle in can exploration vessel 18, thereby warning user, or alternatively, detect container 18 and be full of, thereby communicate by letter to stop the operation of shredder mechanism 20 with controller 56, until container 18 empties at least partly.With reference to Fig. 5 a-5c, provide the further describing of accumulation that is full of the LED how to confirm chopping particle of sensing apparatus 72 about level of waste or chest.
For example, suppose that switch 100 is in logical (or idle) position, controller 56 has many full (for example using certain computational methods) or detects how many accumulation particles (for example utilizing the height of heap) according to container 18, by activating or stopping for driving the motor 34 of cutter elements 21 to control the operation of shredder mechanism 20.The use that level of waste/chest is full of sensor 72 is desirable, because the accumulation that detects chopping particle when sensor 72 has been while almost or substantially having filled up chest 18, controller 56 is by inoperation shredder mechanism 20.This is useful, because it has also reduced the wearing and tearing of shredder mechanism 20, and contributes to prevent the possible obstruction in shredder mechanism or outlet opening 16, because it does not only just operate when chest is full of accumulation particle.
Above-described actuation sensor 50 and level of waste sensor 72 in shredding machine 10 is monomer dual function apparatus.As monomer dual function apparatus, they can be launched and probe radiation.For example, sensor 50 and 72 is LED sensors.Light emitting diode (LED) is can be for luminous and/or as the example in the source of transmitter and detector.Usually, LED or monomer device, due to its bipolarity characteristic, can pass through in the forward bias pattern operation for emitted radiation with between for the back bias mode operation of probe radiation alternately, and as sensing apparatus.
Fig. 5 a-5c illustrates circuit Figure 80, represent to use light emitting diode (LED) to launch the step with probe radiation as sensor 50 or 72.The circuit diagram of Fig. 5 a-5c is from publication " Very Low-Cost Sensing and Communication Using BidirectionalLEDs ", by Dietz et al.for Mitsubishi Electric ResearchLaboratories,
2003 copy.Circuit 80 is connected to for example microcontroller such as controller 56.The signal level that controller 56 can detect in response to LED and take suitable action, or can enable/forbid to the electric power of LED element and carry.Circuit 80 can comprise voltage source Vcc, light emitting diode 82, resistor 84 and the circuit ground being connected in series.Yet resistor 84 is optional, and needn't provide.And, although single diode is shown, one or more diodes can be set, such as LED array or series, uniformity is provided and increases sensing area helping.The use of configuration circuit 80 as illustrated, allows discrete component (LED 82) as dual-purpose machine.The pin of LED or lead-in wire---also referred to as anode and negative electrode---are connected on the pin of microcontroller.
Those skilled in the art are readily appreciated that the general operation principle of circuit 80.In order to utilize the photosensitive and bipolarity characteristic being provided by one or more LED (visible ray or IR) so that one or more LED can be used as transmitter and detector, be monomer dual function apparatus 50 and/or 72, first LED is forward biased with conducting LED, it is utilizing emitted light as transmitter, as shown in Fig. 5 a.After scheduled time amount, the level of the pin of microcontroller is put upside down.The scheduled time amount of putting upside down pin can comprise random time amount, and should not be restrictive.Thereby LED is reverse biased, as shown in Fig. 5 b.This makes the LED can be as optical sensor or detector.As the skilled person will appreciate, LED stored charge as photosensitive capacitor device during this stage.That is, LED is as capacitive sensor, the existence of (for example, article, document, chopping particle and other) because its detecting object and without physical contact.Thereby, when article or chopping movement of particles must near or while approaching LED sensor 50 or 72, electric capacity increases.This electric capacity increases can be made the existence of LED indication (thereby and communicating by letter with controller 56) article in charging aperture 14 or accumulate and have chopping particle in chest 18.
After another scheduled time amount, the cathode side of LED becomes input, as shown in Figure 5 c.Equally, this time quantum should not be restrictive.By RC network, (that is the light quantity that the speed of, LED) discharging is exposed to sensor is directly proportional.LED has the light of similar frequency in response to the light of launching when the forward bias with it.
Thereby LED sensing apparatus 72 as described herein is designed to survey the variation of luminous intensity.In the situation that LED is a part for array or series, the variation of luminous intensity is surveyed in for example, the radiation from other LED matrix (LED matrix) in its vicinity transmitting that LED can reflect based on sensing.Yet if LED is not arranged in array or series, LED can provide several functions.In some cases, single ledly can determine amount of ambient light, thereby the determined Strength Changes detecting of LED can for example, be blocked from its Strength Changes of surround lighting with object (, chopping particle) relevant.Usually, object from LED more close to, the surround lighting that LED detects is fewer.In this case, the single led user's indicating device that can be used as when emitted radiation.With reference to Fig. 1, for example, actuation sensor 50 can be for indicate the single led device of the position of inserting article to user.Single led also can be arranged in shredding machine can with or utilizing emitted light while being ready to use, as the guide for increasing visual, or when shredding machine operates utilizing emitted light.Thereby LED matrix utilizing emitted light is usingd and is caused that user notes and as function indicator.
For example, LED can be used as difunctional charging aperture sensor, and this charging aperture sensor is both as the detector for detecting article, also as user's indicator.That is, installation of sensors is to charging aperture, so its at least a portion is visible (that is, watching it by user) in shredding machine outside.To the alternately input of light emitting diode, make diode emitted radiation and as user's indicator in forward bias direction, thereby for example indicate shredding machine to connect and be ready to, use.Diode also can be as detector in reverse bias direction, the insertion of its at least one article of change detection based on surround lighting.In certain embodiments, diode in the speed replacing between forward bias and reverse bias direction can be enough high (or fast) so that human eye cannot sense the variation between transmitting and detection.In certain embodiments, diode can glimmer.Flicker can be because diode input replaces between forward and reverse bias, thereby flicker effect is provided.In either case, LED replaces between bipolarity state with set rate.Equally, the deixis that should be noted that LED should not be restrictive.
In some cases, the single led photo-detector that is provided as, acquisition environment light lacks thus.
Should note, although in some cases, some residual charges may be from charge/discharge cycle (, the forward bias providing in Fig. 5 a-5c and reverse bias) stay---this can change and depend on the amount of radiation detecting, but residual charge can not cause the larger variation of the electrical characteristics of LED.
By handling LED so that they can be used as capacitive sensor, people can carry out probe radiation intensity with LED, and this radiation intensity is corresponding to the existence of article in (a) charging aperture 14, or the shredding material amount of (b) piling up in chest 18.Importantly, note the mode of sensing apparatus 50 and 72 for determining that article exist or chest is full of or is substantially full of. Sensor 50,72 can combine and determine such mode of operation with the circuit of any kind, software, logic, computer-readable medium or its.For example, the in the situation that of LED actuation sensor 50, circuit and/or logic can be used to refer to, and the light intensity of launching changes (that is, capacitance variations) and is directly proportional to the existence of article, document or paper.That is, if determine that intensity or electric capacity increase, and detect in charging aperture 14 and have article.Alternatively, if intensity or electric capacity reduce, determine and in charging aperture 14, do not have article.
At LED level of waste or chest, be full of sensor 72 in the situation that of (can comprise one or more LED), circuit and/or logic can be used to refer to, the light intensity of launching changes (that is, capacitance variations) and can be directly proportional to the shredding material amount in chest.That is, if determine that the electric capacity in LED reduces or increases, and detects respectively minimizing or the increase of the shredding material amount in chest 18.The increase of the LED electric capacity (that is, radiation intensity) that especially, sensing apparatus 72 detects is corresponding with the increase of the shredding material amount of piling up in chest.Alternatively, along with the chopping particle of accumulation and the distance between LED sensor 72 reduce, the electric capacity between them also reduces.Electric capacity this reduces to cause the signal level reducing in sensor/LED.
Use the advantage of LED sensing apparatus 50 and/or 72 to comprise the cost of sensor.The monomer device of use such as LED is lower than the cost of other combination such as IR/PT combination or other known devices.In addition, LED sensing apparatus has been simplified the manufacture of shredding machine 10 and/or shredding machine housing 12.For example, the in the situation that of assembling one or more LED actuation sensor 50 in shredding machine 10, wire arrangements in shredding machine housing 12 is simplified, for example, because assembling is limited to a side (, rather than when separated transmitter and detector are provided need to all handle and assemble wire on both sides) of charging aperture 14.In addition, use LED sensing apparatus to improve whole machine quality.And LED sensing apparatus appears to general LED indicator, thereby provide simple design.
The use of the LED sensor such as actuation sensor 50 or chest are full of sensing apparatus 72, preferably can survey consistently article and the medium of wide region and survey sheet-fed or the existence of chopping particle at the life period of sensor 50 or 72, and do not provide the acknowledge signal (for example, offering the motor 34 of shredder mechanism 20 from controller 56) of any falseness.In certain embodiments, the radiation-emitting that is full of sensing apparatus 72 from actuation sensor 50 and/or chest provides the luminous intensity (or brightness) of certain level.Yet, due to the variation of aging, misalignment, tolerance and/or different transducer class, from the light beam of sensor emission or the intensity of radiation or brightness, change.For example, the intensity of sensor may reduce due to aging and dust on element and around or the increase of residue.Strength decreased shows that the performance of sensor declines.When the intensity of experiencing when sensor reduces, may send false acknowledge signal from controller 56, thereby produce " (run-on) continues " state for shredding machine 10.When occurring detecting container and being full of the false acknowledge signal of chopping particle about sensor, shredder mechanism may not move (or it may move when chest is full of), can make user feel setback yet.
In order to compensate actuation sensor 50 or chest, be full of the needed characteristic of sensing apparatus 72, sensitivity and further feature, the intensity of the radiation of sensor 50 or 72 transmittings can regulate and revise, so that sensor can be surveyed foregoing these events.For example, for being used LED, sensing apparatus 50 and/or 72 improved the quality of machine or device, because it considers possible self calibration (for example,, by regulating the intensity of radiation).
Each the LED sensor being arranged in shredding machine 10 can be calibrated, to define its zero position." zero position " of sensing apparatus can be defined as when shredding machine 10 energisings and (for example not detect action, in charging aperture 14, there is no article, or (for example do not shred particle in chest 18, do not detect the accumulation of chopping particle)) time, the position that sensor presents.For example, the chopping particle being escaped and enter in chest 18 by shredder mechanism 20 will increase the electric capacity of LED sensing apparatus 72.Thereby, for LED sensor settings is arrived to their corresponding zero positions, can carry out calibration or recalibrate to determine these positions.
For example, Fig. 7 illustrates according to one embodiment of present invention, for operating method 60 or the circulation of the shredding machine with sensor 50 and/or sensing apparatus 72.As shown in 62 to after shredding machine energising, calibration is from the intensity of the radiation of sensor 50 or 72, as shown in 64.Then can carry out typical machine operation (for example, chopping) to being inserted at least one article to be shredded in charging aperture 14, as shown in 66.After the operation of shredder mechanism 20, can recalibrate radiation intensity, as shown in 68.
In order to calibrate and/or recalibrate the radiation intensity of sensor 50 and/or 72, controller 56 can provide instruction or signal to sensor 50 and/or 72.For example, controller 56 can receive for stopping the signal of the operation of motor 34, then carries out immediately the automatic calibration of sensor 50 and/or 72.In this case, " automatically " calibration or automatic execution method, refer at sensor and survey (for example, the detection to paper or chopping particle) calibration radiation intensity afterwards.In one embodiment, when not having article or chopping particle with the change radiation that sensor was detected, or when in chest 18, particle is not shredded in accumulation, the radiation intensity that sensor is launched is adjusted to the scheduled volume on the detectable minimum level of detector, or within being adjusted to this scheduled volume.
In the situation of the actuation sensor such as LED sensor 50, the strength level preferably setting can be normally defined Threshold Detection point, wherein at this Threshold Detection point place, sensor can be determined by the caused electric capacity of insertion that is just inserted into the one or more article in the charging aperture 14 of shredding machine 10 and increases, still the sensitive variation with probe radiation (radiation variation for example, being caused by one or more paper) simultaneously.In the situation that the chest such as LED sensing apparatus 72 is full of sensing apparatus, the strength level of preferred settings can be normally defined, and for shredder mechanism discharge accumulation chopping particle, sensor detects the point that electric capacity increases.For example, in some cases, the strength level of preferred settings can be normally defined, and as radiation, by the accumulation chopping particle reflection in chest or the result being reflected by chest itself, sensor detects the point of minimum capacity.In some cases, the strength level preferably setting for arbitrary sensing apparatus can be normally defined by the determined point of controller 56 service regeulations, logic, computer-readable medium and/or software.Therefore, controller 56 can be considered especially the variation of current light output, the output of desirable light and light output and revise launched radiation or light intensity.
In one embodiment, controller 56 can regulate radiation intensity by adjusting LED sensing apparatus 50,72, thereby they are calibrated at the scheduled volume place of minimum threshold detection level or the point in it.LED can be for example calibrated or be modulated by pulsewidth modulation (PWM), to determine minimized radiation strength level.Therefore, controller 56 can be used for helping to provide desirable strength level.
The circulation of Fig. 7 or method have been considered the compensation to the variation of component ageing, slight misalignment, component tolerance and different elements grade, so not relevant with detecting light beam for sensor 50 or sensing apparatus 72 transmittings thereby such feature becomes.And calibration sensing device 50 and/or 72 contributes to substantially to eliminate following possible problem: drive excessive the reaching of signal power to make sensor 50 not communicate by letter to activate when needed the point of shredder mechanism 20 with controller 56.For example, when Individual Items (for example, while the scraps of paper) being inserted in charging mouth, sensor 50 can communicate by letter to activate shredder mechanism 20 with controller 56, or alternatively, sensing apparatus 72 will be communicated by letter with controller 56, with box lunch, detect and when container 18 or chest are full of the chopping particle of accumulation, will stop shredder mechanism 20.
Calibrating sensors 50 and/or 72 circulation or method, all embodiment as shown in Figure 7, can at any time repeat.For example, in certain embodiments, the radiation intensity of sensor 50,72 can be after shredding machine energising by immediately or automatic calibration.In certain embodiments, calibration can be after the inertia of the scheduled volume of shredder mechanism 20, during park mode (for example,, when shredding machine 10 restrictions send to the quantity of power of its element), follow closely after chopping operation or before other operation, among or carry out afterwards.
Fig. 8 illustrates the example of flow chart, shows to determine to carry out to actuation sensor 50 method 90 of calibration.After 92 energisings, can carry out normal machines operation, as shown in 94.96, machine or shredding machine enter park mode.98, actuation sensor 50 is calibrated with definite threshold sensing point or level.Then, 100, analytic set data are to determine that it is whether in expected range.If calibration data in expected range, i.e. "Yes", actuation sensor 50 is calibrated and is set to minimum threshold detection level, as shown in 102, and normal machines operation can continue, as shown in 94.If calibration data is not in expected range, "No", is dropped 104 in 98 determined sensing point/levels and data, and normal machines operation can continue, as shown in 94, until determined for another event of possible calibration.
Fig. 9 illustrates flow chart, and showing to determine need to be to the method 106 that for example chest is full of or 72 execution of level of waste sensor are calibrated.After switching on to shredding machine 108, can carry out normal machines operation, as shown in 110.112, machine or shredding machine are determined the door of container whether be opened (or for example depart from or stop other motor operated similar action).If Men Wei is opened (or not detecting other similar action), "No", operates in 110 continuation normal machines.If determine that door is opened (or other similar action has occurred), i.e. "Yes", method 106 is waited for, until determine that door is closed, as shown in 114 (or carry out meet certain other action or other similar action that door opens wide).116, determine whether the intensity reading that chest is full of sensor 72 approaches zero position or null value.If position approaches zero position, "Yes" (and probably there is no particle in chest or container), carries out calibration, and radiation intensity is set to new zero position, as shown in 118.Alternatively, if reading is kept off zero position, i.e. "No" (and probably have in chest or container particle exist), the operation of the normal machines of shredding machine continues, as shown in 110.
In addition, can expect, controller 56 can comprise at memory the program code of machine or processor executable, this program code is when being performed, and instruction control unit operation shredding machine 10 calibration at the appropriate time or recalibration actuation sensor 50 or chest are full of the driving signal of sensing apparatus 72.
In certain embodiments, if there is to require the external event of action, calibration loop or method can be interrupted, and can carry out the desired action for this external event.For example, shredding machine 10 (and part, for example, additional sensor and controller 56) may detect user hand/finger near charging aperture 14, detect input on user interface or display screen, detect paper thickness or other event, thereby and the calibration of super (override) sensor 50,72 that relaxes, until next chance.
In some instances, controller 56 also can determine whether the intensity of sensor is less than (or being greater than) its previous zero position and requires calibration.If controller 56 determines that sensor signal is different from the zero position of previously having write down, controller 56 is recalibrated sensor.Usually, can as required, for any amount of difference of finding, calibrate or recalibrate sensor between zero position and new definite position.In some instances, controller 56 service regeulations, logic and/or software determine whether to need calibration or recalibrate.For example, if it is empty substantially that first sensor reading is determined container 18, and after short time period, the second sensor reading determines that container 18 is full of substantially, such logic can be used for showing, quantity based on article chopped, probably underfill of container 18, because having formed false readings.The intensity of sensor can be recalibrated the last zero position, or alternatively, after the operation of for example shredder mechanism, recalibrates.Use the other example of logic, code etc. to be described in more detail below.
The intensity of single assembly or LED is arranged on baseline voltage (base line voltage) and locates.Baseline voltage at least comprises for determining the value of first or initial intensity of the radiation that is launched and surveys.The baseline voltage of sensor is arranged on zero position place by controller 56.The radiation that LED launches in time and intensity reduces.According to an embodiment, controller 56 is the radiation intensity of auto-calibrating sensor by baseline voltage being adjusted to the second intensity.
When a plurality of LED are full of to sensor 72 as actuation sensor 50 and/or chest, can adopt with above-mentioned similar mode and calibrate LED.For example, when a plurality of LED are provided as chest on shredding machine housing 12 and are full of sensing apparatus 72, can determine false sure reading by logic.After operation, high by 10% if definite read-around ratio the 2nd LED of a LED determines, controller 56 can be determined and need calibration by such logic, because can not have such difference when surveying the chopping particle accumulating.
Except preventing sending false acknowledge signal to shredder mechanism 20 from controller 56, calibration LED can also change in relevant scope by its radiation-emitting is remained on to the light intensity of launching with LED, increases the life-span of sensor 50 and/or 72.In addition, the needs that use controller 56 calibration LED for example may be conducive to distinguish false mistake or sensor be recalibrated to new zero position.As previously mentioned, if controller 56 determines that sensor signal is less than the zero position of previously having write down, controller 56 is recalibrated sensor.Yet in some instances, controller 56 may be ignored using any skew of intensity as mistake, such as when dust or the chopping particle Iterim Change radiation intensity.In certain embodiments, controller can be determined skew, and during operation or predetermined amount of time before acquiescence is got back to previous zero position adjusting strength.And controller 56 can be configured to determine after repeatedly regulating should recalibrate radiation intensity.
More particularly, for example, controller 56 and/or logic, code, software, computer-readable medium etc., can be used for detecting the process of emptying calibrating sensors afterwards.For example, if sensing apparatus 72 is determined chest, be full of the particle of accumulation, user can empty chest 18.Additional sensor and/or logic can determine and for example indicate the possible one or more events that empty process, and described event includes but not limited to: the movement of container 18, for or with respect to the opening of framework mobile containers 18, Frame door, shredding machine housing 12 and chest 18 separated, etc.Then, sensing apparatus 72 can be calibrated.If determine that sensor reading approaches or substantially near previous zero position, controller 56 supposition chests or container 18 have been cleared, and threshold detection level can be set as being substantially equal to sensor reading.In some instances, if sensor reading is not the threshold detection level that is substantially equal to previous zero position, but for example, within scheduled volume (, 2% difference), can make intensity or baseline voltage be zero to previous zero position by logic.For example, can suppose that such JND is owing to dust or granule.As additionally or alternatively, the significantly large variation of the first and second readings of sensor can be confirmed as indication and empty process.Therefore, can set new zero position for baseline voltage and intensity with the second reading, to determine the level of waste of chest 18.
In some instances, controller 56 can be determined: the intensity of detection is inaccurate, and sensor reading that sensing apparatus 72 must be based on previous, the intensity level of storing in memory etc. and be calibrated.For example, once sensing apparatus 72 is calibrated after emptying process, just can determine that the second sensor reading is higher than scheduled volume, or alternatively, significantly different from the first reading (for example, 20% difference).Because controller 56 has determined that emptying process occurs, so controller 56 also can be determined the roughly result for the second sensor reading.That is the roughly intensity of the radiation of, reflecting after empty container 18 is normally known.When this difference between the first and second readings is determined, this difference of the first and second readings can be measured, with determine the second such reading be accurately or, alternatively, due to dust and/or other particle but wrong.If determine that reading is accurately, sensing apparatus 72 is calibrated to by the definite value of the second reading.If determine that reading is incorrect, sensing apparatus 72 is calibrated to baseline voltage/zero position previous or acquiescence.
In certain embodiments, during calibration may occur in the process of emptying.For example, if controller 56 with detect the sensor communication of container 18 from shredding machine housing 12 separated (or certain other similar action for emptying above-mentioned), controller 56 can calibration sensing device 72.During this process, calibration sensing device 72 is useful, because intensity is set when not having in container 18 or almost not shredding particle.Especially, chest or container 18 can (for example take off from framework therein, from it, as drawer, slide) an embodiment, baseline voltage or intensity setting that can be based on surveying the radiation reflect and be identified for sensing apparatus 72 in empty framework.That is,, when container 18 takes off from framework substantially, the baseline voltage of sensing apparatus 72 can be conditioned to determine the threshold detection level of intensity.And, in certain embodiments, after reapposing container 18, if the reading that reading obtains when container 18 being taken off from framework substantially during emptying process is different, controller 56 can be estimated or whether definite reading is accurately, and the dust that may exist in estimation (approximate) container 18 if necessary, and/or the amount of particle.
Certainly, sensing apparatus 50 can be calibrated and/or recalibrate in so similar mode.
Other advantage by LED as sensing apparatus 50 or 72, for example, comprise that they are calibrated to the ability at any desirable zero point.In some instances, sensing apparatus 50 or 72 threshold detection level can be set by user or manufacturer.For example, if user find chest 18 give a warning or stop chopping process before become particles filled too full by chopping, user can be alternatively the manually action of super relaxation default setting and controller 56 by setting or regulate the Threshold Detection point of sensor 72.
For example should be noted that, for determining that the method for the action (, the insertion of article or the accumulation of material) of institute's sensing should not be restrictive.For example, the controller in shredding machine 10 and/or other hardware or software can be estimated the amount of material just chopped.As shown in Figure 3, one or more sensors 72 can be arranged in outlet opening 16 or near it, to survey chopping particle when shredder mechanism 20 is piled up at chopping particle.For example, can use timer, based on carrying out such estimation in the time of surveying between chopping particle.Also can use for estimating logic and/or other operation of the quantity of material of chest 18.
In addition, can provide the contact (contact) or the mechanical part (not shown) that extend in charging aperture 14, this contact or mechanical part are inserted in charging aperture 14 in response at least one article and activated.In one embodiment, can provide contact or mechanical part (not shown) to help to activate the operation of shredder mechanism 20.Alternatively, can provide contact element (not shown) to help the thickness of identification or indication stack of articles.
Although made principle of the present invention clear in the illustrative embodiment providing above, but for those skilled in the art, will be obvious that, can carry out various modifications to the structure of using, layout, ratio, element, material and element in practice of the present invention.
Type to the shredding machine 10 of its application acquisition equipment should not be restrictive.For example, acquisition equipment can be applied to comprise the shredding machine of the formula of lifting off (lift-off) shredding machine housing.And shredding machine 10 can comprise the various configurations of shredder mechanism 20 and cutter elements 21.Said mechanism can be implemented in all transverse cutting units (cross cut machine) or cutting cutter (strip cuttingmachine).
In addition, one or more sensors 50 and/or 72 can be used for cooperating with one or more other sensor devices in shredding machine 10.Such sensor device can be following apparatus, this device can but be not limited to: determine maximum ga(u)ge (thickness that for example, indication is inserted at least one article in charging aperture 14 at least equals predetermined thickness), exploration vessel 18 movement, survey that to be arranged in outlet opening 16 or its shredding material, the power of surveying shredding machine 10 or shredder mechanism 20 be around connect or disconnect and/or survey and indication outlet opening 16 is limited or closes.And sensor device can be used for cooperating with machinery, electromechanics or the electric device of any amount.For example, in the situation that the sensor moving for exploration vessel, if waste canister or chest 18 take off from shredding machine housing 12, shredder mechanism 20 is by inoperation.
In addition, can expect, calibration steps as described herein can be used together with the LED of any type arranging on shredding machine sensor.And, can carry out automatic calibration for arbitrary, some or all LED sensors that arrange on shredding machine.
In certain embodiments, can cooperate with sensor and shredding machine with the visible or earcon with any amount of light for example or alarm form.For example, can expect, such as indication chest be full of in the situation that can use such signal.Can use any suitable indicator.
Therefore, will see completely, effectively realize object of the present invention.Yet, will recognize, above-mentioned preferred specific embodiment is shown and described for the object of explanation function and structure principle of the present invention, and can change and do not deviate from these principles.Therefore, present invention resides in all modifications containing in the spirit and scope of following claims.
Claims (21)
1. a shredding machine, comprising:
The shredding machine housing with charging aperture, described charging aperture is for receiving at least one article to be shredded by this charging aperture;
Be contained in the shredder mechanism in described housing, described shredder mechanism comprises motor and cutter elements, described shredder mechanism can be admitted in described cutter elements described at least one article to be shredded, and described motor can be used in chopping direction and drives described cutter elements, makes described cutter elements that described at least one article that are admitted to are wherein chopped into chopping particle;
Can be used as at least one light emitting diode of sensor operation, described at least one photodiode sensor is configured to when operating, be used as transmitter in forward bias direction, and is configured to when operating in reverse bias direction as detector;
Be couple to the controller of described sensor and described shredder mechanism, described controller is configured to make the input of described light emitting diode to replace between described forward bias direction and described reverse bias direction, and
Described controller can be used to the operation that described shredder mechanism is controlled in the radiation detecting based on described sensor.
2. shredding machine according to claim 1, described sensor is selected from and comprises one of group of following: (a) charging aperture sensor, can be used to the radiation variation detecting based on described sensor, survey described at least one article to the insertion in described charging aperture; (b) level of waste sensor, can be used to the radiation variation detecting based on described sensor, surveys the accumulation of the chopping particle of described shredder mechanism discharge.
3. shredding machine according to claim 2, wherein said shredding machine comprises charging aperture sensor and level of waste sensor, and described controller is couple to described charging aperture sensor and level of waste sensor.
4. shredding machine according to claim 1, wherein said shredding machine housing has diapire, on described diapire, has outlet opening, and described light emitting diode is installed to described diapire.
5. shredding machine according to claim 1, the radiation of wherein said light emitting diode transmitting is selected from the group that comprises following: the light in visible spectrum, infra-red radiation and ultra-violet radiation.
6. shredding machine according to claim 1, wherein said motor rotates described cutter elements with false relation, so that chopping is admitted to article wherein by described charging aperture.
7. shredding machine according to claim 1, also comprises for receiving the container of described at least one chopping article or chopping particle.
8. shredding machine according to claim 7, wherein said at least one light emitting diode is arranged on described container or is adjacent with described container.
9. shredding machine according to claim 2, wherein said controller is configured to carry out the automatic calibration of described at least one light emitting diode, wherein when do not have article or chopping particle with change described sensor and detect radiation time, the intensity of the radiation of described at least one light emitting diode transmitting is adjusted to scheduled volume on minimum threshold detection level or within this scheduled volume.
10. shredding machine according to claim 9 is wherein carried out described calibration after the operation of described shredder mechanism.
11. shredding machines according to claim 1, the capacitance variations wherein detecting based on described at least one light emitting diode is determined the radiation that described sensor detects.
12. shredding machines according to claim 1, wherein, a plurality of light emitting diodes are provided and can be used as described sensor operation, and described a plurality of light emitting diode is arranged on described housing by array.
13. shredding machines according to claim 1, the described radiation of wherein said light emitting diode transmitting is in visible spectrum, and described sensor is to can be used to the charging aperture sensor that the radiation variation detecting based on described sensor is surveyed the insertion of described at least one article, wherein said installation of sensors is at described charging aperture place, so its at least a portion is visible in described shredding machine outside, thereby, the input of described light emitting diode alternately make described light emitting diode in forward bias direction as user's indicator, simultaneously in reverse bias direction as the detector of the insertion of at least one article described in the change detection based on surround lighting radiation.
14. 1 kinds of shredding machines, comprising:
The shredding machine housing with charging aperture, described charging aperture is for receiving at least one article to be shredded by this charging aperture;
Be contained in the shredder mechanism in described housing, described shredder mechanism comprises motor and cutter elements, described shredder mechanism can be admitted in described cutter elements described at least one article to be shredded, and described motor can be used in chopping direction and drives described cutter elements, makes described cutter elements that described at least one article that are admitted to are wherein chopped into particle;
For receiving the container of chopping particle;
A series of light emitting diodes, are positioned to receive from being deposited in the radiation of described chopping particle reflection the intensity of definite radiation of reflecting described container, and described intensity is corresponding to the amount that is deposited in the chopping particle in described container;
Described a series of light emitting diode is configured to when operating, be used as transmitter in forward bias direction, and is configured to when operating in reverse bias direction as detector;
Be couple to the controller of described a series of light emitting diode and described shredder mechanism, described controller is configured to make the input of described a series of light emitting diodes to replace between described forward bias direction and described reverse bias direction, and
Described controller can be used to the operation that described shredder mechanism is controlled in detection based on described a series of light emitting diodes.
15. shredding machines according to claim 14, wherein said controller is configured to, when meeting the condition of described shredding machine, the intensity adjustment of the radiation that described light emitting diode is received to minimum threshold detection level place or on scheduled volume or this scheduled volume within.
16. shredding machines according to claim 15, by described container, the movement with respect to described shredding machine housing limits wherein said condition.
17. shredding machines according to claim 14, wherein said shredding machine housing has diapire, and described a series of light emitting diode is installed to described diapire to survey the chopping particle in described container.
18. shredding machines according to claim 15 are wherein carried out the described adjusting of described intensity after the operation of described shredder mechanism.
19. shredding machines according to claim 14, the capacitance variations wherein detecting based on described a series of light emitting diodes is determined the described intensity of described radiation.
20. shredding machines according to claim 14, wherein said a series of light emitting diodes are installed to described housing by array.
21. 1 kinds of methods of carrying out in shredding machine, described shredding machine comprises: have the shredding machine housing of charging aperture, described charging aperture is for receiving at least one article to be shredded by this charging aperture; Be contained in the shredder mechanism in described housing, described shredder mechanism comprises motor and cutter elements, described shredder mechanism can be admitted in described cutter elements described at least one article to be shredded, and described motor can be used in chopping direction and drives described cutter elements, makes described cutter elements that described at least one article that are admitted to are wherein chopped into chopping particle; Can be used as at least one light emitting diode of sensor operation, described at least one photodiode sensor is configured to when operating, be used as transmitter in forward bias direction, and is configured to when operating in reverse bias direction as detector; Be couple to the controller of described sensor and described shredder mechanism, described controller is configured to make the input of described light emitting diode to replace between described forward bias direction and described reverse bias direction, and described controller can be used to the operation that described shredder mechanism is controlled in the radiation detecting based on described sensor, described method comprises:
The described input of described light emitting diode is replaced between described forward bias direction and described reverse bias direction;
Utilize described light emitting diode probe radiation; And
Utilize described controller, the operation of described shredder mechanism is controlled in the radiation detecting based on described light emitting diode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/355,589 US7823816B2 (en) | 2008-10-15 | 2009-01-16 | Shredder with light emitting diode (LED) sensors |
| US12/355,589 | 2009-01-16 |
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| CN101811082A CN101811082A (en) | 2010-08-25 |
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