JPH0694317B2 - Transported object detection device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a conveyed object detection device, and for example, is capable of detecting information about a bill that is incorporated in a bill validator and guided to the bill validator. The present invention relates to a transported object detection device.

[Prior Art] FIG. 6A and FIG. 6B show an example of a bill validator in which a conventional transported object detecting device of this type is incorporated. Here, 1 is a bill validator, 2 is a bill to be identified, and 3 is a sensor which is arranged near the bill insertion slot of the validator 1 and detects that the bill 2 has been inserted. When the insertion detection sensor 3 detects, the banknote 2 starts to be conveyed, and when passing between the roller 4 and, for example, a magnetic sensor 5 arranged at a position opposite to the roller 4, the sensor 5 detects the magnetic property on the banknote 2. Part is detected,
After the information regarding the authenticity of the bill 2 is sought, the conveyance path 6 is further added.
Is conveyed to a predetermined position along.

In such a case, however, the insertion detection sensor 3 is composed of, for example, a phototransistor, and a light emitting element (not shown) that emits light supplied to the base of the light receiving transistor has, for example, a long life. The intermittent drive signal as shown in FIG. 7 was supplied. That is, in the case of this example, the lighting time T _ON is 20 msec, while the extinguishing time T _OFF is 140.sec, and the bill is inserted within 20 msec at the minimum and 160 msec at the maximum after being inserted. Can be detected. Thus, when the bill 2 is detected in this state, a corresponding pulse signal is generated thereafter from the light receiving transistor (see Japanese Patent Application No. 61-257067).

However, if the insertion detection sensor 3 is intermittently driven as in the above-described conventional transported object detection device, it can be detected that the transported object such as a paper sheet has been reliably supplied to the identification machine 1, but the transported object is detected. Since the information about the transferred object after being inserted is obtained only during the lighting period, there is a possibility that it cannot be detected if the transferred object is a broken banknote if there is a break in the middle.

Therefore, a problem in the case where the above-mentioned broken bill is detected will be described with reference to FIGS. 8A to 8C.

Now assume that there is a tear, as shown in Figure 8A. Here, the breakage is 7A at different points depending on the solid line and the broken line.
And 7B are overlapped and described, and 8 is a scanning line by the sensor 3. Therefore, for example, when there is a break 7A at the position of the solid line of the banknote 2, if the detection is carried out by the intermittent drive of the sensor 3 as shown in FIG. 8B, the sensor 3 breaks 7A.
In the position of, the sensor 3 is not driven, and therefore the tear 7A is overlooked without being detected. But,
If the breakage is 7B, then the sensor 3 is in a driving state as shown in FIG. 8C, and the breakage 7B is detected.

[Problems to be Solved by the Invention] That is, in the transported object detection device having the above-described configuration, the sensor 3 is driven intermittently, so even if a transported object such as a banknote has a defect or tear, it is overlooked. In particular, in the case of a bill validator or the like, there is a problem that a jam occurs due to receipt of a torn bill.

Therefore, in view of the above-mentioned problems, an object of the present invention is to perform intermittent driving for extending the life,
In order to solve the problem, it is an object of the present invention to provide a transported object detection device which can recognize not only the acceptance of a transferred object but also the defect of its shape without overlooking.

[Means for Solving the Problems] In order to achieve such an object, the present invention comprises an light emitting unit and a light receiving unit, and insertion detection provided in the vicinity of a conveyance path insertion port of a paper sheet as a conveyed body. A sensor and an object to be conveyed detection device which detects the insertion of the paper sheet into the insertion opening by the insertion detection sensor and starts the conveyance of the paper sheet. An intermittent driving means for intermittently driving the sheet feeding means, an insertion detecting means for detecting the insertion of the paper sheet into the insertion opening based on the output of the light receiving part at the time of the intermittent driving by the intermittent driving means, and the insertion by the insertion detecting means. Based on the output of the light receiving unit during continuous driving by the continuous driving unit that continuously drives the light emitting unit by stopping the intermittent driving by the intermittent driving unit based on detection,
A damage detecting unit for detecting the presence / absence of damage to the paper sheet conveyed on the conveying path is provided.

[Operation] According to the present invention, the light emitting portion of the insertion detection sensor is driven intermittently in the standby state until the paper sheet, which is the recording medium, is inserted from the insertion opening, and thus the long life of the light emitting portion is achieved. Be promoted. Further, when the insertion of the paper sheet into the insertion opening is detected by the output of the light receiving section, the light emitting section is continuously driven until the operation related to the detection of the paper sheet is completed. Based on the output from the, the presence or absence of damage to the paper sheet being conveyed is reliably detected by the damage detection means, and not only the presence or absence of the paper sheet that is the transported object but also the damage to the paper sheet is detected. You can

Embodiments Embodiments of the present invention will be described in detail and specifically below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. Here, 3A is a light emitting diode, 3B is a light receiving transistor, and 10 is a transistor for driving the light emitting diode 3A. Further, 11 is provided with a central processing unit CPU and a timer 12, in addition to performing a series of identification operations according to the present invention based on a program stored in the ROM 13, for example, for the identification of bill authenticity, storage and refund. It is a microcomputer that carries out related operations. Furthermore, 14 and 15 are capacitors and load resistors provided between the output signal line of the light receiving transistor 3B and the ground, and 16 is a resistor provided for the drive circuit of the sensor 3.

Therefore, in this example, until the insertion detection sensor 3 detects the insertion of the bill, the intermittent drive signal KQ is generated through the intermittent timer 12 as shown in FIG. The light emitting element 3A is supplied to intermittently turn on the light. The intermittent timing may be in the form shown in FIG. 7, for example. Next, when a bill is inserted while the intermittent drive signal KQ is being supplied, the detection signal Vs from the sensor 3 becomes high level as shown in FIG. 2B. Therefore, in this example, it is determined that a bill has been inserted at this point, and the rise of the detection signal Vs causes
Stop the intermittent drive by the timer 12 and turn on the light emitting diode 3A.
By continuously lighting, as shown in FIG. 2B,
The detection signal Vs is continuously maintained at the high level.

Next, a situation in which a detection signal is generated when a damaged banknote is transported in the transported object detection device configured as described above will be described with reference to FIGS. 3A to 3C. That is, 3A
When the banknote 2 is conveyed as shown in the figure (intermittently), the drive signal KQ changes to a continuous signal when the tip of the banknote 2 is detected as shown in FIG. 3B, while the detection signal Vs is at this stage. High level. However, when the bill 2 is conveyed to the position where the bill 7 is torn, the detection signal from the sensor 3
Since Vs once becomes a low level as shown in FIG. 3C, it is possible to judge that the bill 2 is damaged by this signal and to cause the host device to perform the returning operation, for example.

Further, in a general banknote validator, when it is determined that the banknote is true, the banknote is transported from the recognition position to a standby position, where the temporary banknote is held and then collected or refunded. It is customary to carry out the operation corresponding to each of these commands. Therefore, for example, as shown in FIG. 4, a genuine bill output signal is output in (B) as a genuine bill, and then a signal of a receipt / refund command is output in (C), whereby a receipt / refund is received. Although the operation is performed, the drive signal KQ is continuously maintained in the continuous drive state as shown in (A) thereof until the series of operations are completed.

Subsequently, the detection operation according to the present invention will be described with reference to FIG. First, the intermittent timer is cleared as an initial process in step S1, and it is determined in step S2 whether or not the “on” time of the intermittent timer is set to 20 msec or less. If it is set to 20 msec or less, the process proceeds to step S3. The drive pulse KQ is output, and it is further determined in step S4 whether or not the intermittent timer is held at 10 to 20 msec.

Then, if it is determined here that the bill is held at 10 to 20 msec, the intermittent timer is normally driven, so in step S5, it is determined whether or not the bill 2 is inserted. If it is determined that the banknote 2 is inserted, the process proceeds to step S6 to stop the intermittent timer intermittently, switch KQ to a continuous drive signal, and identify the banknote in step S7. Note that the bill identifying operation here also includes an action of finding a torn bill or the like, and the authenticity of the bill 2 is judged in the next step S8.
Since the detection signal as shown in the figure is generated, it is determined that it is not true.

Thus, the authenticity of the bill 2 including the above operation is determined in step S8, and if it is determined to be true, the process proceeds to step S9, a genuine note sending signal is output, and step S10 is performed.
It is determined whether or not the receipt signal has been input, and if it is determined to be present, the receipt operation is performed in step S11, the output of the continuous drive signal is temporarily stopped in step S12, and the intermittent timer is activated in step S13. Clear and return to step S2.

Further, if it is determined in step S2 that the intermittent timer is not set to 20 msec or less, the drive pulse KQ is not output in step S14, and the process proceeds to step S15 to determine whether the intermittent timer is 160 msec or more. If so, the intermittent timer is reset in step S16 and the process returns to step S2, but if the intermittent timer is not 160 msec or more, the process directly returns to step S2. Furthermore, when it is determined in step S4 that the intermittent timer is not set to 10 to 20 msec, the process returns to step S1 to clear the intermittent timer.

Further, if there is no receipt input in step S10, it may be necessary to make a refund, so the process branches to step S17 to determine whether there is a refund input. If it is determined that there is no refund input, step S10 is executed again. If it is judged that there is a refund input, proceed to step S18 to carry out the refund operation,
After that, the process proceeds to step S12.

In the above description, only the breakage on one side can be detected by the insertion detection sensor 3, but it is possible to detect the breakage at both ends or the breakage at the central portion depending on the arrangement of the light emitting element and the light receiving element. It goes without saying that it can be configured as.

[Effects of the Invention] As described above, according to the present invention, the insertion detection sensor including the light emitting unit and the light receiving unit, which is provided in the vicinity of the transport path insertion port of the paper sheet that is the transported object, In a conveyed object detection device that detects the insertion of the paper sheet into the insertion opening by an insertion detection sensor and starts conveying the paper sheet, the light emitting unit is intermittently driven in a standby state. Based on the intermittent drive means, the insertion detection means for detecting the insertion of the paper sheet into the insertion opening based on the output of the light receiving part during the intermittent drive by the intermittent drive means, and the insertion detection by the insertion detection means A continuous driving unit that stops the intermittent driving by the intermittent driving unit to continuously drive the light emitting unit, and the paper conveyed on the conveying path based on the output of the light receiving unit during the continuous driving by the continuous driving unit. Detects whether the leaf body is damaged Since the damage detection means is provided, the life of the insertion detection sensor can be extended by intermittently driving the light emitting unit in the standby state until the paper sheet is inserted from the insertion opening. By continuously driving the light emitting unit, it is possible to detect damage to the paper sheet during that period, and especially when applied to a bill validator, the occurrence of jams can be detected by detecting the breakage of bills immediately after insertion. It can be prevented.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of the configuration of the transported object detection device of the present invention, FIGS. 2A and 2B are waveform diagrams of the sensor drive signal and the bill detection signal, respectively, FIGS. 3A, 3B and 3B. FIG. 3C is a series of explanatory diagrams showing the timing of generation of a torn bill, a drive signal output and a detection signal output for the bill, and FIG. 4 is a time when a bill validating operation is performed in a bill validator according to the present invention. FIG. 5 is a flow chart of the bill identifying operation according to the present invention, FIG. 6A is a configuration diagram showing an example of the configuration of a conventional conveyed object detection device, FIG. 6B is a plan view of FIG. 6A, and FIG. Is a waveform diagram showing an example of the intermittent drive signal of the sensor in the conventional conveyed object detection device, and FIGS. 8A, 8B and 8C are conventional drive signals driven by the intermittent drive signal as shown in FIG. If a bill is torn in the conveyed object detection signal It is an explanatory diagram for showing that both occur when not detected a time to be known. 1 ... Banknote validator, 2 ... Banknote, 3 ... Insertion detection sensor, 3A ... Light emitting diode, 3B ... Light receiving transistor, 7,7A, 7B ... Broken, 10 ... Transistor, 11 ... Microcomputer , 12 …… Timer.

Claims (1)

[Claims] 1. An insertion detection sensor, which comprises a light emitting portion and a light receiving portion, and is provided in the vicinity of a conveyance path insertion opening of a paper sheet as a material to be conveyed, and to the insertion opening of the paper sheet by the insertion detection sensor. In the conveyed object detection device that detects the insertion of the sheet and starts the conveyance of the paper sheet, an intermittent driving means for intermittently driving the light emitting portion in the standby state, and an intermittent driving by the intermittent driving means. Insertion detecting means for detecting the insertion of the paper sheet into the insertion opening based on the output of the light receiving part, and the intermittent driving by the intermittent driving means is stopped based on the insertion detection by the insertion detecting means. Continuous drive means for continuously driving the sheet, and damage detection means for detecting the presence or absence of damage of the paper sheet conveyed through the conveyance path based on the output of the light receiving portion during continuous drive by the continuous drive means. It is characterized by having Carrier detection device.