WO2016004832A1 - 介质输送控制方法及装置和馈纸式扫描装置 - Google Patents
介质输送控制方法及装置和馈纸式扫描装置 Download PDFInfo
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- WO2016004832A1 WO2016004832A1 PCT/CN2015/083200 CN2015083200W WO2016004832A1 WO 2016004832 A1 WO2016004832 A1 WO 2016004832A1 CN 2015083200 W CN2015083200 W CN 2015083200W WO 2016004832 A1 WO2016004832 A1 WO 2016004832A1
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- medium
- conveying
- power source
- medium conveying
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
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- the present invention relates to the field of conveying devices, and in particular to a medium conveying control method and device and a paper feeding scanning device.
- the medium conveying device is a device for moving the conveying medium in the conveying passage, for example, may be a scanning device or a printing device, and for the scanning device, the medium to be scanned may be conveyed in the conveying channel to scan the medium to be scanned, for the printing device
- the printing medium may be conveyed and discharged by the conveying path or may be conveyed to the printing mechanism by the conveying path for the medium to be printed.
- the paper-feeding scanning device can be classified into a document scanner, a check scanner, a document scanner, and the like according to the type of the scanning medium.
- the conventional paper-feeding scanning device when the image of the medium to be scanned is acquired, the medium to be scanned enters the inside of the paper-feeding scanning device by the entrance of the paper-feeding scanning device, and the conveying roller of the paper-feeding scanning device drives the medium to be scanned along the conveying channel thereof.
- the image acquiring unit of the sheet feeding scanning device collects the image of the surface of the medium to be scanned.
- the medium to be scanned is retained in the paper-feeding scanning device, and only the user turns on the paper-feeding scanning.
- the conveying passage of the device can take out the medium to be scanned, and therefore, the operation is cumbersome.
- the paper-feeding scanning device is embedded in the self-service terminal device, since the self-service terminal device has a complicated structure and is unattended, if the medium to be scanned is retained in the paper-feeding scanning device, the user usually needs to be in the staff member's With the help of the paper-feeding scanning device, the paper to be scanned can be taken out. Therefore, the existing paper-feeding scanning has the problem that the user cannot remove the medium to be scanned in time when the power is abnormal, and the ease of use of the paper-feeding scanning device is reduced. Sex.
- the main object of the present invention is to provide a medium conveying control method and apparatus and a paper feeding type scanning apparatus to solve the problem that the medium conveying apparatus in the prior art cannot conveniently take out the medium in the conveying passage when there is a power source abnormality.
- a medium conveying control method which is The conveying medium moves in a conveying passage of the medium conveying device, the medium conveying device includes a power module for supplying power to the medium conveying mechanism, the medium conveying mechanism is for conveying the medium, and the power module includes a main power source and a backup power source.
- the medium conveying control method includes: determining whether the main power source is abnormal; if it is determined that the main power source is abnormal, supplying power to the medium conveying mechanism through the standby power source; and controlling the medium conveying mechanism to perform the medium conveying operation under the power supply of the standby power source.
- the medium conveying control method further includes: determining whether the medium is retained in the conveying passage, wherein the controlling medium conveying mechanism executes the medium under the power supply of the standby power source when determining the stagnant medium in the conveying passage Conveying action.
- whether the medium is retained in the conveying passage is determined by: detecting whether the medium enters the conveying passage; detecting whether the medium is discharged from the conveying passage; if the medium enters the conveying passage and not discharging the conveying passage, determining the retained medium in the conveying passage; if the medium enters the conveying The channel exits the delivery channel and determines the absence of media in the delivery channel.
- the medium conveying control method further includes: detecting whether the medium is discharged from the conveying passage; if the medium discharging conveying passage is detected Then, the medium conveying mechanism is controlled to stop performing the conveying operation; if it is detected that the medium is not discharged from the conveying passage, the medium conveying mechanism is controlled to continue the conveying operation.
- the medium conveying device is a conveying device of the paper feeding type scanning device, and the medium is a medium to be scanned.
- the medium conveying control method includes: outputting prompt information, wherein the prompting information is used to prompt the main power source to be abnormal.
- a medium conveying device in which a conveying passage is provided, the medium conveying device comprising: a medium conveying mechanism for moving the conveying medium in the conveying passage
- the power module is configured to supply power to the medium conveying device
- the power module includes a main power source and a backup power source
- the controller 10 is configured to control the medium conveying mechanism to perform the medium conveying operation under the power supply of the standby power source when determining that the main power source is abnormal.
- the medium conveying device further includes: a first diode D1 located between the main power source and the standby power source; the second diode D2 and the first resistor R1, the diode D2 and the first resistor R1 are connected in parallel and connected to the first A diode D1 and a backup power supply.
- the medium conveying device further includes: a power state detecting unit configured to detect whether the main power source is abnormal.
- the power state detecting portion includes: a voltage comparator U1; a second resistor R2, the first end of the second resistor R2 is connected to the reference voltage Vref, and the second end of the second resistor R2 is connected to the first end of the voltage comparator U1
- the first end of the third resistor R3 is connected to the output end of the voltage comparator U1, the second end of the third resistor R3 is connected to the second input end of the voltage comparator U1;
- the fourth resistor R4 The first end of the fourth resistor R4 is connected to the main power source, the second end of the fourth resistor R4 is connected to the first node, and the first node is connected to the voltage ratio
- the second input terminal of the comparator U1; the fifth resistor R5, the first end of the fifth resistor R5 is grounded, and the second end of the fifth resistor R5 is connected to the first node.
- the main power source is an AC-DC conversion power source
- the backup power source includes a plurality of low-voltage capacitors connected in series.
- the medium conveying device further includes: a medium detecting sensor group for detecting whether the medium stays in the medium conveying device and/or detecting whether the medium is discharged from the medium conveying device.
- controller is further configured to: after determining the abnormality of the main power source, determine whether the medium is retained in the conveying channel according to the detection result of the medium detecting sensor group, and control the power supply of the medium conveying mechanism in the standby power source when determining the retained medium in the conveying channel; The medium conveying action is performed.
- the controller is configured to determine whether the medium is retained in the transport channel by: detecting whether the medium enters the transport channel through the medium detecting sensor group; detecting whether the medium exits the transport channel through the medium detecting sensor group; if the medium enters the transport channel and not discharging the transport channel , the medium in the conveying channel is determined; if the medium enters the conveying channel and exits the conveying channel, the medium is not retained in the conveying channel.
- the medium conveying mechanism After determining the retention medium in the conveying channel, and controlling the medium conveying mechanism to perform the medium conveying operation under the power supply of the standby power source, detecting whether the medium is discharged from the conveying passage, and when detecting the medium discharging the conveying passage, controlling the medium conveying mechanism to stop executing In the conveying operation, when it is detected that the medium is not discharged from the conveying passage, the medium conveying mechanism is controlled to continue the conveying operation.
- the medium conveying device is a conveying device in the paper feeding type scanning device, and the medium is a medium to be scanned.
- a sheet-fed scanning apparatus comprising any one of the medium conveying apparatuses provided by the present invention.
- the medium conveying mechanism since the medium conveying mechanism is supplied to the medium conveying mechanism by the backup power source when the main power source is abnormal, and the medium conveying mechanism performs the medium conveying operation under the power supply of the standby power source, the medium conveying device in the prior art cannot solve the problem of the power source abnormality.
- FIG. 1 is a block diagram showing the composition of a medium conveying device according to an embodiment of the present invention
- FIG. 2 is a schematic diagram showing the composition of a power state detecting portion of a medium conveying device according to an embodiment of the invention
- FIG. 3 is a flow chart of a medium conveyance control method according to an embodiment of the present invention.
- FIG. 4 is a flow chart of a media delivery control method in accordance with a preferred embodiment of the present invention.
- the medium conveying device 1 includes a controller 10, a power module 11, a power state detecting portion 12, a medium conveying mechanism 13, an image sensor 14, and Media detection sensor group 15.
- the controller 10 is configured to control the operation of each component module, such as controlling the medium conveying mechanism 13 to transport the medium, controlling the image sensor 14 to acquire an image of the conveyed medium, and the controller is further configured to receive the power state information detected by the power state detecting unit in real time. Wait.
- the power module 11 is configured to supply power to the medium conveying device, including the main power source 111, the backup power source 112, and auxiliary components.
- the main power source 111 is used to supply electrical energy to the media delivery device to provide the controller 10, the media delivery mechanism 13, and the image sensor 14 with the voltage required for operation.
- the main power source is an AC/DC conversion power source, that is, an AC-DC conversion power source, for converting AC power into DC power, the input is AC power, the input voltage Vin is 220V AC, the output is DC power, and the output voltage Vout is 24VDC, the main
- the power source 111 can be built into the media transport device or placed as a separate module outside of the media transport device.
- the backup power source 112 is configured to provide standby power to the medium conveying device when the main power source 111 is abnormal.
- the backup power source 112 may be at least one capacitor or a rechargeable battery.
- the backup power source includes a plurality of low-voltage capacitors connected in series; the auxiliary component
- the diode D1 is disposed between the main power source 111 and the backup power source 112 for blocking the current of the backup power source 112, preventing the voltage of the backup power source 112 from impacting the main power source 111; the diode D2 In parallel with the resistor R1, it is connected in series between the diode D1 and the backup power source.
- the diode D2 is used to reduce the power loss when the standby power source is supplied.
- the resistor R1 is used to protect the backup power source 112 and limit the charging current when the standby power source is charged. Ground, the power of the resistor R1 is 1W.
- part of the power provided by the main power source 111 is used for each module of the medium conveying device, such as the image sensor acquiring the scanned image, the medium conveying mechanism conveying the medium to be scanned, and the other part for charging the standby power source; when the main power source is abnormal
- the backup power supply 112 automatically discharges through the diode D2 to provide the medium conveying device with the electric energy required for emergency operation, including driving the medium conveying mechanism to be retained in the medium conveying device.
- the medium exits the media delivery device.
- the power state detecting unit 12 detects whether or not the power supply of the main power source 111 is normal, and outputs the detection result to the controller 10.
- the power state detecting portion 12 includes a voltage comparator U1 and four resistors, wherein the input voltage of the "-" input terminal of the voltage comparator U1 is a reference voltage Vref that is connected through the resistor R2, and the voltage comparator U1.
- the input voltage of the "+" input terminal is V11
- the output signal Sig of the voltage comparator U1 is a detection signal indicating whether the main power source is normal
- R3 is a feedback resistor
- the resistance value is large
- the resistor R4 and the resistor R5 are voltage dividing resistors.
- Vref preset voltage*(R5/(R4+R5)
- the medium conveying mechanism 13 includes a medium conveying motor 131 for driving the conveying roller assembly 132 to rotate, and a conveying roller assembly 132 for driving the medium to move along the conveying passage.
- the image sensor 14 is configured to read image information on the medium and output scan data, which is usually a charge-coupled image sensor (CCD) or a contact image sensor (CIS).
- the medium detecting sensor group 15 is configured to detect whether the medium stays in the medium conveying device. If the medium conveying device has only one opening for inputting and outputting the medium, the medium detecting sensor group 15 includes an inlet sensor located at the opening of the medium conveying device. And a sensor located in the conveying passage in the medium conveying device opposite to the opening; if the medium conveying device has an inlet and an outlet, the medium detecting sensor group 15 includes an inlet sensor at the inlet of the medium conveying device and an outlet at the medium conveying device An exit sensor, wherein the inlet sensor is configured to detect whether the medium enters the medium conveying device, and the outlet sensor is configured to detect whether the medium entering the medium conveying device is discharged from the medium conveying device.
- the output signal of the medium detecting sensor is “ 0" means that no medium is detected, and an output signal of "1" indicates that the medium is detected.
- the medium conveying device 1 further includes a liquid crystal display unit 16 and/or an LED indicator light 17, wherein the liquid crystal display unit 16 is configured to display operation prompt information, status information, and the like of the medium conveying device, and the state information includes a main power source 111.
- the status information such as the main power supply is normal, the main power supply is abnormal, etc.
- the LED indicator light 17 is used to indicate the working state of the medium conveying device, and may include multiple indicator lights, such as a red light indicating that the power supply is abnormal, and a green light indicating that the medium conveying device is normal, etc. .
- the medium power feeding mechanism 13 can supply power to the medium conveying mechanism 13 when the main power source 111 is abnormal, the medium conveying mechanism 13 can perform the medium conveying operation under the power supply of the backup power source 112, thereby When the power supply device has a power abnormality and the main power supply cannot be normally powered, the medium in the transport channel can be conveniently transported.
- the medium conveying device 1 of the present invention may be a scanning device or a part of the scanning device.
- the medium in the embodiment of the present invention is a medium to be scanned, and preferably, the medium conveying device 1 is a paper feeding scanning. Device.
- the medium conveying device 1 of the present invention may also be other devices provided with a conveying path, for example, a printing device provided with a printing medium conveying path.
- the medium in the embodiment of the present invention is a medium to be printed.
- the embodiment of the present invention further provides a medium conveying control method, which is used for conveying the medium in the medium conveying device, and the medium conveying device may be any one provided by the embodiment of the present invention.
- the medium conveying device of the embodiment of the present invention can also be used to execute the medium conveying control method of the embodiment of the present invention.
- FIG. 3 is a flow chart of a method of controlling a medium conveyance according to an embodiment of the present invention, the method including the following process:
- Step S101 determining whether the main power source is abnormal
- the power state detecting unit 12 detects in real time whether the output voltage V1 of the main power source 111 is less than a preset voltage. If the output power source V1 is smaller than the preset voltage, the main power source voltage abnormal signal is output, such as the signal “0”, and the controller 10 receives the power state. After the voltage abnormality signal sent by the detecting unit 12, it is determined that the main power source is abnormal; if the output power source V1 is not less than the preset voltage, the main power source voltage normal signal is output, for example, the signal "1”, the controller 10 determines that the main power source is normal, and continues to detect the power source. The output signal of the state detecting unit 12.
- Step S102 supplying power to the medium conveying mechanism through the backup power source
- the backup power source 112 automatically supplies power to the medium conveying mechanism 13.
- Step S103 controlling the medium conveying mechanism to perform the medium conveying operation under the power supply of the standby power source
- the backup power source 112 supplies power to the medium conveying motor 131 of the medium conveying mechanism 13, and the medium conveying motor 131 drives the conveying roller assembly 132 to rotate, and discharges the medium in the medium conveying device to the outside of the medium conveying device for the user to take away.
- the controller 10 controls the motor 131 of the medium conveying mechanism to drive the conveying roller assembly 132 to rotate in the paper discharge direction, and the driving medium is discharged from the opening; if the medium conveying device has one At the inlet and an outlet, the controller 10 controls the motor 131 of the medium conveying mechanism to drive the conveying roller assembly 132 to continue to rotate, and the driving medium is discharged from the outlet.
- the medium conveyance mechanism 13 since the medium supply mechanism 13 can be supplied with power from the backup power source 112 when the main power source 111 is abnormal, the medium conveyance mechanism 13 can perform the medium conveyance operation under the power supply of the backup power source 112, and will be in The medium in the conveying channel is discharged.
- the medium conveying mechanism when the main power source is abnormal, if there is no retentive medium in the medium conveying device, the medium conveying mechanism may be not required to be supplied by the backup power source and the medium conveying mechanism may be controlled to perform the medium conveying operation under the power supply of the standby power source, that is, only in the main power source.
- the medium conveying mechanism When the medium is stagnant and the medium is retained in the medium conveying device, the medium conveying mechanism is powered by the backup power source and the medium conveying mechanism is controlled to perform the medium conveying operation under the power supply of the standby power source. Therefore, in the embodiment of the present invention, after determining whether the main power source is abnormal, the method further includes the step of determining whether the medium is retained in the medium conveying device.
- the outputting prompt message prompts the user that the medium conveying device power supply is abnormal, which is convenient for prompting the user to cause the media conveying device to malfunction, preventing the user from performing the failure. The necessary operations.
- the medium conveying control method includes:
- Step S201 determining whether the main power source is abnormal
- Step S202 determining whether a medium is retained in the medium conveying device
- the medium conveying device includes an inlet and an outlet as an example to explain how to determine whether or not the retained medium is included in the medium conveying device. Detecting whether the medium enters the medium conveying device by the output signal of the inlet sensor, and detecting whether the medium entering the medium conveying device has been discharged from the medium conveying device by the output signal of the outlet sensor, and determining the medium in the medium conveying device through the output signals of the inlet sensor and the outlet sensor Whether to retain the medium.
- the inlet sensor has not detected the medium at all times, it means that the medium does not enter the medium conveying device, that is, the medium is not retained in the medium conveying device.
- the inlet sensor detects the media, it indicates that the media is entering the media delivery device, ie, the media in the media delivery device.
- the exit sensor detects the medium, it indicates that the medium entering the media delivery device is being expelled from the media delivery device, ie, the media is retained within the media delivery device.
- the inlet sensor In the case where neither the inlet sensor nor the outlet sensor detects the medium, it is determined whether the medium has entered the medium conveying device according to the output signal change of the inlet sensor, and it is determined whether the medium entering the medium conveying device has been discharged according to the output signal change of the outlet sensor.
- the output signal of the inlet sensor When the setting medium is at the detection position of the inlet sensor, the output signal of the inlet sensor is “1”. Otherwise, the output signal of the inlet sensor is “0”; when the medium is at the detection position of the outlet sensor, the output signal of the outlet sensor is “1”. "Otherwise, the output signal of the exit sensor is "0".
- step S203 If the medium is retained in the medium conveying device, the process goes to step S203; if the medium is not retained in the medium conveying device, the medium conveying control process ends.
- Step S203 the backup power source drives the medium conveying mechanism to discharge the medium retained in the medium conveying device
- This step can be implemented by step S102 and step S103 in the above embodiment.
- Step S204 issuing a prompt message
- the controller 10 When the controller 10 receives the power failure signal of the main power source 111 outputted by the power state detecting unit 12, it sends a corresponding prompt message, such as displaying "main power failure" on the liquid crystal display unit 16, or is issued by the LED indicator 17. Corresponding light prompts prompting the user to malfunction, for example, prompting the user to "media transport loading The fault has occurred.”
- the medium that is retained in the medium conveying device is driven by the backup power source to drive the conveying mechanism, so that the user can directly remove the medium without the help of the worker.
- the medium retained in the conveying device improves the ease of use of the medium conveying device, and prompts the user that the medium conveying device is abnormally powered, thereby prompting the user to cause the medium conveying device to malfunction, preventing the user from performing unnecessary operations, and improving the medium conveying.
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Abstract
一种介质输送控制方法及装置和馈纸式扫描装置。介质输送控制方法，用于输送介质在介质输送装置的输送通道内移动，介质输送装置包括介质输送机构（13），主电源（111）和备用电源（112），该方法包括：判断主电源（111）是否异常；如果主电源（111）异常，则通过备用电源（112）向介质输送机构（13）供电，并控制介质输送机构（13）在备用电源（112）的供电下输送介质。通过介质输送控制方法，解决了介质输送装置在电源异常时无法方便地取出滞留在输送通道内介质的问题。
Description
本发明涉及输送装置领域，具体而言，涉及一种介质输送控制方法及装置和馈纸式扫描装置。
介质输送装置为输送介质在输送通道内移动的装置，例如，可以是扫描装置或者打印装置，对于扫描装置而言，可以在输送通道内对待扫描介质进行输送以对待扫描介质进行扫描，对于打印装置而言，可以在对介质执行打印后，对打印介质由输送通道输送并排出或者对于待打印介质由输送通道输送至打印机构进行打印。
以馈纸式扫描装置为例，根据扫描介质的种类，馈纸式扫描装置可分为文档扫描仪、支票扫描仪、证件扫描仪等。传统的馈纸式扫描装置，获取待扫描介质图像时，待扫描介质由馈纸式扫描装置的入口进入馈纸式扫描装置内部，馈纸式扫描装置的输送辊驱动待扫描介质沿其输送通道移动，在待扫描介质移动过程中，馈纸式扫描装置的图像获取单元采集待扫描介质表面图像。在扫描过程中，当馈纸式扫描装置的供电出现异常，如电源掉电或电源电缆线意外断开时，待扫描介质会滞留在馈纸式扫描装置内，只有使用者打开馈纸式扫描装置的输送通道才能将待扫描介质取出，因此，操作比较繁琐。特别是当馈纸式扫描装置嵌入在自助终端设备中时，由于自助终端设备结构复杂，且无人看守，如果待扫描介质滞留在馈纸式扫描装置内时，使用者通常需要在工作人员的帮助下才能打开馈纸式扫描装置，取出待扫描介质，因此，现有的馈纸式扫描存在电源异常时使用者不能及时取走待扫描介质的问题，降低了馈纸式扫描装置的易用性。
针对现有技术中介质输送装置在存在电源异常时无法方便地取出输送通道内的介质的问题，目前尚未提出有效的解决方案。
发明内容
本发明的主要目的在于提供一种介质输送控制方法及装置和馈纸式扫描装置，以解决现有技术中介质输送装置在存在电源异常时无法方便地取出输送通道内的介质的问题。
为了实现上述目的，根据本发明的一个方面，提供了一种介质输送控制方法，用
于输送介质在介质输送装置的输送通道内移动，介质输送装置包括电源模块和介质输送机构，电源模块用于向介质输送机构供电，介质输送机构用于输送介质，电源模块包括主电源和备用电源，该介质输送控制方法包括：判断主电源是否异常；如果判断出主电源异常，则通过备用电源向介质输送机构供电；控制介质输送机构在备用电源的供电下执行介质输送动作。
进一步地，在判断出主电源异常之后，该介质输送控制方法还包括：判断输送通道内是否滞留介质，其中，在确定输送通道内滞留介质时，控制介质输送机构在备用电源的供电下执行介质输送动作。
进一步地，通过以下方式判断输送通道内是否滞留介质：检测介质是否进入输送通道；检测介质是否排出输送通道；如果介质进入输送通道未排出输送通道，则确定输送通道内滞留介质；如果介质进入输送通道并排出输送通道，则确定输送通道内未滞留介质。
进一步地，在确定输送通道内滞留介质，并控制介质输送机构在备用电源的供电下执行介质输送动作之后，该介质输送控制方法还包括：检测介质是否排出输送通道；如果检测出介质排出输送通道，则控制介质输送机构停止执行输送动作；如果检测出介质未排出输送通道，则控制介质输送机构继续执行输送动作。
进一步地，介质输送装置为馈纸式扫描装置的输送装置，介质为待扫描介质。
进一步地，在判断出主电源异常之后，介质输送控制方法包括：输出提示信息，提示信息用于提示所述主电源异常。
为了实现上述目的，根据本发明的另一方面，提供了一种介质输送装置，在介质输送装置内设置有输送通道，该介质输送装置包括：介质输送机构，用于输送介质在输送通道内移动；电源模块，用于给介质输送装置供电，电源模块包括主电源和备用电源；控制器10，用于在确定主电源异常时，控制介质输送机构在备用电源的供电下执行介质输送动作。
进一步地，该介质输送装置还包括：第一二极管D1，位于主电源和备用电源之间；第二二极管D2和第一电阻R1，二极管D2和第一电阻R1并联后连接在第一二极管D1和备用电源之间。
进一步地，该介质输送装置还包括：电源状态检测部，用于检测主电源是否异常。
进一步地，电源状态检测部包括：电压比较器U1；第二电阻R2，第二电阻R2的第一端连接至参考电压Vref，第二电阻R2的第二端连接至电压比较器U1的第一输入端；第三电阻R3，第三电阻R3的第一端连接至电压比较器U1的输出端，第三电阻R3的第二端连接至电压比较器U1的第二输入端；第四电阻R4，第四电阻R4的第一端连接至主电源，第四电阻R4的第二端连接至第一节点，第一节点连接至电压比
较器U1的第二输入端；第五电阻R5，第五电阻R5的第一端接地，第五电阻R5的第二端连接至第一节点。
进一步地，主电源为交流直流转换电源，备用电源包括多个串联的低压电容。
进一步地，该介质输送装置还包括：介质检测传感器组，用于检测介质是否滞留在介质输送装置内和/或检测介质是否排出介质输送装置。
进一步地，控制器还用于在判断出主电源异常之后，根据介质检测传感器组的检测结果判断输送通道内是否滞留介质，在确定输送通道内滞留介质时，控制介质输送机构在备用电源的供电下执行介质输送动作。
进一步地，控制器用于通过以下方式判断输送通道内是否滞留介质：通过介质检测传感器组检测介质是否进入输送通道；通过介质检测传感器组检测介质是否排出输送通道；如果介质进入输送通道未排出输送通道，则确定输送通道内滞留介质；如果介质进入输送通道并排出输送通道，则确定输送通道内未滞留介质。
进一步地，在确定输送通道内滞留介质，并控制介质输送机构在备用电源的供电下执行介质输送动作之后，检测介质是否排出输送通道，在检测出介质排出输送通道时，控制介质输送机构停止执行输送动作，在检测出介质未排出输送通道时，则控制介质输送机构继续执行输送动作。
进一步地，介质输送装置为馈纸式扫描装置中的输送装置，介质为待扫描介质。
为了实现上述目的，根据本发明的另一方面，提供了一种馈纸式扫描装置，该馈纸式扫描装置包括本发明提供的任意一种介质输送装置。
在本发明中，由于在主电源异常时通过备用电源向介质输送机构供电，并且介质输送机构在备用电源的供电下执行介质输送动作，解决了现有技术中介质输送装置在存在电源异常时无法方便地取出输送通道内的介质的问题，进而达到了即便介质输送装置存在电源异常，也能够方便地取出输送通道内介质的效果。
构成本申请的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例的介质输送装置的模块组成示意图；
图2是本根据发明实施例的介质输送装置的电源状态检测部的组成示意图；
图3是根据本发明实施例的介质输送控制方法的流程图；以及
图4是根据本发明优选实施例的介质输送控制方法的流程图。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
图1是根据本发明实施例的介质输送装置的模块组成示意图，如图所示，介质输送装置1包括控制器10、电源模块11、电源状态检测部12、介质输送机构13、图像传感器14以及介质检测传感器组15。
控制器10，用于控制各组成模块的工作，如控制介质输送机构13输送介质，控制图像传感器14获取被输送的介质的图像，控制器还用于实时接收电源状态检测部检测的电源状态信息等。
电源模块11，用于给介质输送装置提供电能，包括主电源111、备用电源112以及辅助的元器件。主电源111用于在为介质输送装置提供电能，从而为控制器10、介质输送机构13以及图像传感器14提供工作所需电压。优选地，主电源为AC/DC转换电源，即交流直流转换电源，用于把交流电转换为直流电，其输入为交流电，输入电压Vin为220V AC，其输出为直流电，输出电压Vout为24VDC，主电源111可以内置在介质输送装置内，也可以作为一个单独的模块放置在介质输送装置外。备用电源112用于在主电源111出现异常时向介质输送装置提供备用的电能，备用电源112可以为至少一个电容或可充电电池，优选地，备用电源包括多个串联的低压电容；辅助元器件，包括二极管D1、二极管D2和电阻R1，其中，二极管D1位于主电源111和备用电源112之间，用于隔断备用电源112的电流，防止备用电源112的电压对主电源111产生冲击；二极管D2与电阻R1并联后串联在二极管D1和备用电源之间，其中，二极管D2用于减小备用电源供电时的电能损失，电阻R1用于保护备用电源112，限制备用电源充电时的充电电流，优选地，电阻R1的功率为1W。
在正常情况下，主电源111提供的电能，一部分用于介质输送装置的各模块工作，如图像传感器获取扫描图像、介质输送机构输送待扫描介质，另一部分用于备用电源充电；当主电源出现异常时，如主电源发生故障或主电源电缆断开时，备用电源112自动通过二极管D2放电，向介质输送装置提供应急操作所需的电能，包括驱动介质输送机构，以使滞留在介质输送装置内的介质排出介质输送装置。
电源状态检测部12，用于检测主电源111供电是否正常，并把检测结果输出到控制器10。如图2所示，电源状态检测部12包括电压比较器U1和4个电阻，其中，电压比较器U1的“-”输入端的输入电压为通过电阻R2接入的基准电压Vref，电压比较器U1的“+”输入端的输入电压为V11，电压比较器U1的输出信号Sig为表示主电源是否正常的检测信号，R3为反馈电阻，阻值很大，电阻R4、电阻R5为分压电阻，用于对主电源电源V1分压，V11＝V1*(R5/(R4+R5))，基准电压Vref与预设电压成比例关系，优选地，Vref＝预设电压*(R5/(R4+R5))。根据比较器的工作原理，当电压
V11>Vref，即V1>预设电压时，输出信号Sig为“1”，表示主电源正常；否则，输出信号Sig为“0”，表示主电源异常。
介质输送机构13，包括介质输送电机131和输送辊组件132，其中，介质输送电机131用于驱动输送辊组件132旋转，输送辊组件132用于驱动介质沿输送通道移动。图像传感器14，用于读取介质上的图像信息，输出扫描数据，通常为电耦合式图像传感器(Charge-coupled Device，简称CCD)或接触式图像传感器(Contact Image Sensor，简称CIS)。
介质检测传感器组15，用于检测介质是否滞留在介质输送装置内，如果介质输送装置只有一个用于输入和输出介质的开口，则介质检测传感器组15包括一位于介质输送装置开口处的入口传感器和位于介质输送装置内输送通道内与开口相对一端的传感器；如果介质输送装置具有一个入口和一个出口，则介质检测传感器组15包括一位于介质输送装置入口处的入口传感器和位于介质输送装置出口处的出口传感器，其中，入口传感器用于检测介质是否进入介质输送装置，出口传感器用于检测进入介质输送装置的介质是否从介质输送装置中排出，通常情况下，介质检测传感器的输出信号为“0”表示未检测到介质、输出信号为“1”表示检测到介质。
优选地，介质输送装置1还包括液晶显示单元16和\或LED指示灯17，其中，液晶显示单元16，用于显示介质输送装置的操作提示信息、状态信息等，状态信息中包括主电源111的状态信息，如主电源正常、主电源异常等；LED指示灯17，用于指示介质输送装置的工作状态，可以包括多个指示灯，如红灯表示电源异常，绿灯表示介质输送装置正常等。
在本发明实施例的介质输送装置中，由于在主电源111异常时可以通过备用电源112向介质输送机构13供电，从而介质输送机构13能够在备用电源112的供电下执行介质输送动作，从而即便在介质输送装置存在电源异常导致主电源无法正常供电时，也能够方便地输送出处于输送通道内的介质。
需要说明的是，本发明的介质输送装置1可以为扫描装置或者扫描装置的一部分，对应地，本发明实施例中的介质为待扫描介质，优选地，该介质输送装置1为馈纸式扫描装置。本发明的介质输送装置1也可以为其他设置有输送通道的装置，例如，设置有打印介质输送通道的打印装置，对应地，本发明实施例中的介质为待打印介质。
本发明实施例还提供了一种介质输送控制方法，该介质输送控制方法用于对介质输送装置内的介质进行输送，该介质输送装置可以是本发明实施例提供的任意一种。本发明实施例的介质输送装置也可以用于执行本发明实施例的介质输送控制方法。
图3是根据本发明实施例的介质输送控制方法的流程图，该方法包括如下处理过程：
步骤S101，判断主电源是否异常
电源状态检测部12实时检测主电源111的输出电压V1是否小于预设电压，如果输出电源V1小于预设电压，则输出主电源电压异常信号，如信号“0”，控制器10接收到电源状态检测部12发送的电压异常信号后，判定主电源异常；如果输出电源V1不小于预设电压，则输出主电源电压正常信号，如信号“1”，控制器10判定主电源正常，继续检测电源状态检测部12的输出信号。
步骤S102，通过备用电源向介质输送机构供电
当控制器10判定主电源111异常时，即主电源电压小于预设电压时，由备用电源112自动向介质输送机构13供电。
步骤S103，控制介质输送机构在备用电源的供电下执行介质输送动作
备用电源112向介质输送机构13的介质输送电机131供电，介质输送电机131驱动输送辊组件132转动，将介质输送装置内的介质排出至介质输送装置外，以便使用者取走。
如果介质输送装置只有一个用于介质进入和排出的开口，则控制器10控制介质输送机构的电机131驱动输送辊组件132沿出纸方向转动，驱动介质从该开口排出；如果介质输送装置具有一个入口和一个出口，则控制器10控制介质输送机构的电机131驱动输送辊组件132继续转动，驱动介质从出口排出。
在该实施例的介质输送控制方法中，由于在主电源111异常时可以通过备用电源112向介质输送机构13供电，从而介质输送机构13能够在备用电源112的供电下执行介质输送动作，将处于输送通道内的介质排出。
优选地，当主电源异常时，如果介质输送装置内没有滞留介质，则可以无需通过备用电源向介质输送机构供电并控制介质输送机构在备用电源的供电下执行介质输送动作，即，仅在主电源异常且介质输送装置内滞留有介质时才通过备用电源向介质输送机构供电并控制介质输送机构在备用电源的供电下执行介质输送动作。因而，在本发明实施例中，在判断主电源是否异常之后，还可以包括判断介质输送装置内是否滞留有介质的步骤。
为了进一步提高介质输送装置的可用性和用户友好性，还可以在判断出主电源异常之后，输出提示信息提示使用者介质输送装置电源异常，便于提示使用者介质输送装置发生故障，防止使用者进行不必要的操作。
图4是根据本发明优选实施例的介质输送控制方法的流程图，如图4所示，该介质输送控制方法包括：
步骤S201，判断主电源是否异常
同步骤S101。
步骤S202，判断介质输送装置内是否滞留有介质
下面以介质输送装置包括一个入口和一个出口为例说明如何判定介质输送装置内是否包括滞留的介质。由入口传感器的输出信号检测介质是否进入介质输送装置，由出口传感器的输出信号检测进入介质输送装置的介质是否已从介质输送装置中排出，通过入口传感器和出口传感器输出信号共同判定介质输送装置内是否滞留介质。
如果入口传感器一直未检测到介质，表示介质没有进入介质输送装置，即介质输送装置内未滞留介质。
如果入口传感器检测到介质，表示介质正在进入介质输送装置，即介质输送装置内滞留介质。
如果出口传感器检测到介质，表示进入介质输送装置的介质正在从介质输送装置排出，即介质输送装置内滞留介质。
在入口传感器和出口传感器均未检测到介质的情况下，根据入口传感器的输出信号变化判定介质是否已进入介质输送装置，根据出口传感器的输出信号变化判定进入介质输送装置的介质是否已经排出。设定介质位于入口传感器的检测位置时，入口传感器的输出信号为“1”，否则，入口传感器的输出信号为“0”；介质位于出口传感器的检测位置时，出口传感器的输出信号为“1”，否则，出口传感器的输出信号为“0”。当入口传感器的输出信号发生过从“0”->“1”->“0”的变化，即检测到介质从无到有再到无时，表示介质已经进入了介质输送装置。在介质已经进入介质输送装置的情况下，如果出口传感器的输出信号发生过从“0”->“1”->“0”的变化，即检测到介质从无到有再到无时，表示进入介质输送装置的介质已从介质输送装置内排出，即介质输送装置内未滞留介质；如果出口传感器一直未检测到介质，并且介质在移动方向上的长度Lm小于入口传感器与出口传感器之间的距离Lb，表示已进入介质输送装置的介质的前端未到达出口传感器，即介质输送装置内滞留介质，其中，Lm＝Vm*T，Vm为介质的输送速度，T为介质前端到达入口传感器至介质尾端离开入口传感器的累计时间。
如果介质输送装置内滞留介质，则转到步骤S203；如果介质输送装置内未滞留介质，则本介质输送控制过程结束。
步骤S203，备用电源驱动介质输送机构排出介质输送装置内滞留的介质
该步骤可以通过上述实施例中的步骤S102和步骤S103来实现。
步骤S204，发出提示信息
当控制器10接收电源状态检测部12输出的主电源111电源异常信号后，发出相应的提示信息，如在液晶显示单元16上显示“主电源掉电”等信息，或者通过LED指示灯17发出相应的光提示，提示使用者发生故障，例如，提示使用者“介质输送装
置已发生故障”。
在该实施例提供的介质输送控制方法中，当主电源异常时，通过备用电源驱动输送机构排出滞留在介质输送装置内的介质，因此，不需要工作人员的帮助，使用者就可以直接取走介质输送装置内滞留的介质，提高了介质输送装置的易用性，通过提示使用者介质输送装置电源异常，便于提示使用者介质输送装置发生故障，防止使用者进行不必要的操作，提高了介质输送装置的可用性和用户友好性。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (15)
- 一种介质输送控制方法，用于输送介质在介质输送装置的输送通道内移动，所述介质输送装置包括电源模块(11)和介质输送机构(13)，所述电源模块(11)用于向所述介质输送机构(13)供电，所述介质输送机构(13)用于输送所述介质，其特征在于，所述电源模块(11)包括主电源(111)和备用电源(112)，所述介质输送控制方法包括：判断所述主电源(111)是否异常；如果判断出所述主电源(111)异常，则通过所述备用电源(112)向所述介质输送机构(13)供电；以及控制所述介质输送机构(13)在所述备用电源(112)的供电下执行介质输送动作。
- 根据权利要求1所述的介质输送控制方法，其特征在于，在判断出所述主电源(111)异常之后，所述介质输送控制方法还包括：判断所述输送通道内是否滞留介质，其中，在确定所述输送通道内滞留介质时，控制所述介质输送机构(13)在所述备用电源(112)的供电下执行介质输送动作。
- 根据权利要求2所述的介质输送控制方法，其特征在于，通过以下方式判断所述输送通道内是否滞留介质：检测介质是否进入所述输送通道；检测介质是否排出所述输送通道；如果介质进入所述输送通道未排出所述输送通道，则确定所述输送通道内滞留介质；以及如果介质进入所述输送通道并排出所述输送通道，则确定所述输送通道内未滞留介质。
- 根据权利要求2所述的介质输送控制方法，其特征在于，在确定所述输送通道内滞留介质，并控制所述介质输送机构(13)在所述备用电源(112)的供电下执行介质输送动作之后，所述方法还包括：检测介质是否排出所述输送通道；如果检测出所述介质排出所述输送通道，则控制所述介质输送机构(13)停止执行输送动作；以及如果检测出所述介质未排出所述输送通道，则控制所述介质输送机构(13)继续执行输送动作。
- 根据权利要求1所述的介质输送控制方法，其特征在于，所述介质输送装置为馈纸式扫描装置中的输送装置，所述介质为待扫描介质。
- 一种介质输送装置，其特征在于，在所述介质输送装置内设置有输送通道，所述介质输送装置包括：介质输送机构(13)，用于输送介质在所述输送通道内移动；电源模块(11)，用于给介质输送装置供电，所述电源模块(11)包括主电源(111)和备用电源(112)；以及控制器(10)，用于在确定所述主电源(111)异常时，控制所述介质输送机构(13)在所述备用电源(112)的供电下执行介质输送动作。
- 根据权利要求6所述的介质输送装置，其特征在于，还包括：第一二极管D1，位于主电源(111)和备用电源(112)之间；以及第二二极管D2和第一电阻R1，所述二极管D2和所述第一电阻R1并联后连接在所述第一二极管D1和所述备用电源之间。
- 根据权利要求6所述的介质输送装置，其特征在于，还包括：电源状态检测部(12)，用于检测所述主电源(111)是否异常。
- 根据权利要求6所述的介质输送装置，其特征在于，所述主电源(111)为交流直流转换电源，所述备用电源(112)包括多个串联的低压电容。
- 根据权利要求6所述的介质输送装置，其特征在于，还包括：介质检测传感器组(15)，用于检测介质是否滞留在所述介质输送装置内和/或检测介质是否排出所述介质输送装置。
- 根据权利要求10所述的介质输送控制装置，其特征在于，所述控制器(10)还用于在判断出所述主电源(111)异常之后，根据所述介质检测传感器组(15)的检测结果判断所述输送通道内是否滞留介质，在确定所述输送通道内滞留介质时，控制所述介质输送机构(13)在所述备用电源(112)的供电下执行介质输送动作。
- 根据权利要求11所述的介质输送控制装置，其特征在于，所述控制器(10)用于通过以下方式判断所述输送通道内是否滞留介质：通过所述介质检测传感器组(15)检测介质是否进入所述输送通道；通过所述介质检测传感器组(15)检测介质是否排出所述输送通道；如果介质进入所述输送通道未排出所述输送通道，则确定所述输送通道内滞留介质；以及如果介质进入所述输送通道并排出所述输送通道，则确定所述输送通道内未滞留介质。
- 根据权利要求11所述的介质输送控制装置，其特征在于，在确定所述输送通道内滞留介质，并控制所述介质输送机构(13)在所述备用电源(112)的供电下执行介质输送动作之后，检测介质是否排出所述输送通道，在检测出所述介质排出所述输送通道时，控制所述介质输送机构(13)停止执行输送动作，在检测出所述介质未排出所述输送通道时，则控制所述介质输送机构(13)继续执行输送动作。
- 根据权利要求6所述的介质输送控制装置，其特征在于，所述介质输送装置为馈纸式扫描装置中的输送装置，所述介质为待扫描介质。
- 一种馈纸式扫描装置，其特征在于，包括权利要求6至14中任一项所述的介质输送装置。
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