JP4397209B2 - Inspection device - Google Patents

Description

  The present invention relates to an inspection apparatus such as a weight inspection apparatus, an X-ray foreign object detection apparatus, a metal detector, and a seal checker.

  Patent Document 1 below discloses a weight inspection apparatus in which a weight inspection is performed while an inspection target article is conveyed by a belt conveyor. In the weight inspection apparatus, a low-pass filter is provided to remove the influence of the vibration load of the belt conveyor on the inspection. The optimum filtering condition is automatically set based on the driving speed of the belt conveyor and the dimensions of the inspection target article in the transport direction. In order to teach the inspection apparatus the dimensions of the article to be inspected in the transport direction, the weight inspection apparatus has a sticker printed with a scale of length (hereinafter referred to as “scale seal”) attached to the casing of the apparatus. The person measures the size of the sample of the article to be inspected using this scale seal, and inputs the measurement result to the inspection apparatus. Alternatively, the dimensions of the inspection target article are calculated based on the driving speed of the belt conveyor and the result of detecting the time required for the inspection target article to pass through a predetermined location on the conveyance path by the optical sensor, and the calculation is performed. The result is automatically entered into the inspection device.

Japanese Patent Publication No. 8-27209

  However, in the method of measuring the dimensions of the article to be inspected using the scale sticker affixed to the casing of the weight inspection apparatus, the operator's line of sight moves from the measurement with the scale seal until the measurement result is input as data. There is a problem that there is a relatively high possibility that erroneous input of data occurs due to a change in the memory of the worker during that time. There is also a problem that the scale seal that has been affixed may be peeled off and mixed into the inspection target article as a foreign substance.

  In addition, in the method of calculating the size of the inspection target article based on the driving speed of the belt conveyor and the time required for passing the inspection target article, false detection caused by chattering and slipping of the inspection target article on the belt conveyor are caused. There is a problem that erroneous input of data may occur due to the influence of erroneous detection and the like.

  The present invention has been made to solve such a problem, and in an inspection apparatus in which operating conditions are determined based on the dimensions of the inspection target article regarding the conveyance direction, erroneous input of data regarding the dimensions of the inspection target article is reduced. Alternatively, an object is to obtain an inspection apparatus that can be avoided.

The inspection apparatus according to claim 1 of the present invention is an inspection apparatus that performs an inspection while conveying an inspection target article, and determines an operating condition according to the dimensions of the inspection target article, and has a display screen. Display means, scale display control means for displaying a scale of length on the display screen in actual size, input means for inputting a measurement value measured using the scale, and the input input by the input means Re-detection prohibition that includes condition determination means for determining the operating condition based on a measurement value and a sensor that detects an inspection target article, and prohibits detection by the sensor from the time when the sensor detects the inspection target article The time is calculated based on the measurement value input from the input means, and the input means determines the measurement target value of the article to be inspected as the measurement value. Wherein the length of the diagonal line is larger dimension is input.

  Of the present invention, the inspection apparatus according to claim 2 is the inspection apparatus according to claim 1, in particular, the input means displays a numerical input window on the display screen in parallel with the display of the scale. It has an input display control means, and a measured value input means for inputting the measured value from the numerical value input window.

  The inspection apparatus according to a third aspect of the present invention is the inspection apparatus according to the first aspect, wherein the input means specifies a point on the scale on the display screen, and the scale. And a measurement value input means for inputting the length indicated by the point as the measurement value.

  The inspection apparatus according to a fourth aspect of the present invention is the inspection apparatus according to any one of the first to third aspects, in particular, wherein the scale display control means includes a plurality of preset length units. Unit selection means for selecting one length unit, and unit-by-unit scale display means for displaying a scale corresponding to the one length unit as the scale on the display screen.

  The inspection apparatus according to a fifth aspect of the present invention is the inspection apparatus according to any one of the first to fourth aspects, wherein the scale display control means is the measurement input by the input means. A value is displayed on the display screen in correspondence with the scale.

  Among the inventions, the inspection apparatus according to claim 6 is the inspection apparatus according to any one of claims 1 to 5, in which an allowable range of the measurement value is set in advance, and the measurement value And a warning means for issuing a warning when a value outside the allowable range is input from the input means.

  Among the inventions, the inspection apparatus according to claim 7 is the inspection apparatus according to any one of claims 1 to 5, wherein an allowable range of the measurement value is set in advance, and the measurement value And a prohibiting means for prohibiting a value outside the allowable range from being input from the input means.

  The inspection apparatus according to an eighth aspect of the present invention is the inspection apparatus according to the sixth or seventh aspect, wherein the upper limit value of the allowable range is the maximum display of the scale displayed on the display screen. It is set according to a value.

According to the inspection apparatus according to each of claims 1 to 8 , after the operator measures the dimensions of the article to be inspected using the actual scale displayed on the display screen, the operator does so. The measured value of the measured dimension can be input by the input means. Therefore, compared with the case where the dimension of the article to be inspected is measured using the scale sticker affixed to the casing of the inspection apparatus, the possibility that the measured value of the dimension is erroneously input by the operator can be reduced. Moreover, it is possible to avoid a situation in which the scale sticker attached to the housing is peeled off and mixed into the inspection object.
Further, the maximum dimension of the inspection target article that can be defined with respect to the conveyance direction is measured and input. Therefore, in the case where the inspection apparatus according to each of claims 1 to 8 is applied to a weight inspection apparatus in which filtering conditions are determined in accordance with the dimension in the transport direction, even if the dimension is measured or input is incorrect. Even if this occurs, the problem caused by the error is only a decrease in the processing speed, and it is possible to prevent the weight inspection accuracy from decreasing.

  According to the inspection apparatus of the second aspect, since the numerical value input window is displayed on the display screen in parallel with the display of the scale, the screen on which the scale is displayed and the numerical value input window are switched and displayed. In comparison, it is possible to reduce the possibility that the measurement value is erroneously input by the operator.

  According to the inspection apparatus according to claim 3, in a state where the operator aligns one end of the inspection target article with the start end of the scale on the display screen, the point on the scale corresponding to the other end of the inspection target article is displayed. By specifying, the dimension of the article to be inspected is obtained. And the measured value of the dimension calculated | required in this way is automatically input by the measured value input means, without interposing the operation input operation | work by an operator. Therefore, it is possible to avoid the possibility that the measured value of the dimension is erroneously input by the operator.

  According to the inspection apparatus of the fourth aspect, since scales for various length units such as millimeter units and inch units can be displayed, user convenience can be improved.

  According to the inspection apparatus of the fifth aspect, by referring to the measurement value displayed on the display screen in correspondence with the scale, the operator can easily determine whether there is an error in inputting the measurement value of the dimension. Can be confirmed.

  According to the inspection apparatus of claim 6 or 7, a warning is issued when a measured value of a dimension that deviates from a predetermined allowable range is issued, or such input itself is prohibited. It is possible to easily prevent the operating condition from being determined with a significant error in the measured value.

  According to the inspection apparatus of claim 8, since the upper limit value of the allowable range is set according to the display maximum value of the scale, a large value that cannot be measured with the scale displayed on the display screen is a dimension. It is possible to easily prevent the measurement value from being erroneously input.

  Hereinafter, an embodiment of the present invention will be described by taking a weight inspection apparatus as an example. However, the present invention is not limited to a weight inspection apparatus, and inspection is performed while conveying an inspection target article, such as an X-ray foreign object detection apparatus, a metal detector, a seal checker, and the like. The present invention can be applied to all types of inspection apparatuses in which operating conditions are determined according to dimensions.

  FIG. 1 is a front view schematically showing a configuration of a weight inspection apparatus 100 according to an embodiment of the present invention. The weight inspection apparatus 100 includes a weighing unit 1, a take-in unit 2 disposed on the upstream side (carrying-in end side) of the weighing unit 1, and a sorting unit disposed on the downstream side (carrying-out end side) of the weighing unit 1. 3 is provided.

  The weighing unit 1 is configured by supporting a belt conveyor mechanism having a conveyor belt 4 stretched by a roller connected to a motor (not shown) and an idle roller by a load cell type or force balance type measuring instrument 5. Has been. The weighing unit 1 measures the weight of the article 15 with the measuring instrument 5 while conveying the article 15 as the inspection target article with the conveying belt 4. The article 15 is, for example, a packed product or the like that is preliminarily weighed and packed.

  The take-in unit 2 includes a belt conveyor mechanism having a conveyance belt 6, and aligns a plurality of articles 15 in the same direction and sends them to the weighing unit 1 at equal intervals. A photoelectric sensor 7 located at the upstream end of the conveying belt 4 is disposed in the take-in unit 2, and the photoelectric sensor 7 can detect that the tip of the article 15 has reached the upstream end of the conveying belt 4. It is.

  The weight inspection apparatus 100 has a main body 10 installed on a floor surface 13 by a base 12, and the main body 10 includes a control unit 20 (to be described later) and a display device having a display screen 11a ( LCD device, PDP display device, etc.) 11 are incorporated. The display screen 11a is provided with a touch panel function, and the display screen 11a is disposed at a position where the operator can easily see and touch the screen. The measuring unit 1 and the taking-in unit 2 are supported by the main body unit 10.

  The sorting unit 3 includes a conveyor belt 8 and a movable arm 9 for sorting articles, and the article 15 sent from the weighing unit 1 is converted into a non-defective product (a regular product) based on the measurement result by the weighing unit 1. ) And defective products (overweight or lightweight products). The distribution unit 3 is arranged on the floor surface 13 by the base 14.

  FIG. 2 is a block diagram illustrating a configuration of the control unit 20. The control unit 20 includes a microcomputer 28 having a CPU 23, a ROM 24, a RAM 25, and interfaces 26 and 27, a digital filter 21, and a weighing data storage circuit 22.

  The digital filter 21 is a low-pass filter for removing the influence of the vibration load of the conveyor belt 4 and the vibration load of the article 15 itself on the inspection. Weighing data D1 is input to the digital filter 21 from the measuring instrument 5 via a preamplifier (not shown). As will be described later, the digital filter 21 is configured such that filtering conditions such as the thinning-out number N and the timing of taking in the weighing data D1 can be variably set by data D6 from the microcomputer 28.

  The weighing data storage circuit 22 can store a plurality of weighing data D2 sent from the digital filter 21.

  The microcomputer 28 inputs the weighing data D3 from the weighing data storage circuit 22, the detection signal D4 from the photoelectric sensor 7, the data D5a and D5b from the input means 30 described later, and the data D6 to the digital filter 21. The control signal D7 is output to the data storage circuit 22, and the data D8 is output to the display means 11.

  FIG. 3 is a block diagram showing functions of the microcomputer 28 regarding the setting of filtering conditions. The microcomputer 28 includes a set value storage means 40, a belt speed control means 41, a redetection prohibition time calculation means 42, an article transport time calculation means 43, a thinning cycle calculation means 44, a filtering time calculation means 45, a sampling time calculation means 46, It is programmed to include weighing data output means 47 and automatic zero prohibition time calculation means 48.

  The set value storage means 40 stores the operating speed V of the conveying belt 4 and the length L of the article 15 in the conveying direction, which are input from the input means 30. The measurement method and data input method of the length L will be described in detail later.

  The belt speed control means 41 performs adjustment so that the operation speed of the conveying belt 4 becomes the speed V.

The re-detection prohibition time calculation means 42 determines the time from when the article 15 is detected by the photoelectric sensor 7 until the article 15 is completely transferred to the conveying belt 4, that is, the re-detection prohibition time T _0, as long as the speed V. Based on L
T ₀ = L / {(V + speed of conveying belt 6) / 2}
Calculate as

The article transport time calculation means 43 calculates the time from when the article 15 is detected by the photoelectric sensor 7 until the leading end of the article 15 reaches the downstream end of the transport belt 4, that is, the article transport time T ₁ , based on the speed V And the length L,
T ₁ = {(belt length of conveying belt 4−L) / V} + T ₀
Calculate as

The thinning cycle calculating means 44 is based on the time T ₀ , T ₁ and the number P (for example, 4) of necessary measurement data, for example, the thinning number N that defines the response in the digital filter 21, that is, the sampled superposition. A number representing the signal output interval as a multiple of the sampling period ΔT is calculated.

The filtering time calculation means 35 calculates the response time T _N of the digital filter 21 from the thinning-out number N.

The sampling time calculation means 46 calculates a time T ₃ at which the measurement data can be taken in based on the times T ₀ , T ₁ , T _N.
T ₃ = T ₁ −T ₀ −T _N
Calculate as

  The weighing data output means 47 selects and outputs the most probable data from the plurality of weighing data D3 stored in the weighing data storage circuit 22.

Based on the speed V, the length L, and the response time T _N of the digital filter 21, the automatic zero prohibition time calculation means 48 calculates the automatic zero prohibition time T ₄ .
T ₄ = (L / V) + T _N
Calculate as

Referring to FIG. 2, prior to weighing, data D5a relating to the operating speed V of the conveying belt 4 and data D5b relating to the length L of the article 15 relating to the conveying direction are input from the input means 30 to the microcomputer 28. The Then, the microcomputer 28 drives the conveyor belts 4 and 6 based on the input data D5a, and calculates the above times T ₀ and T ₁ . Further, based on the time T ₀ , T ₁ , the preset number P of the measurement data, and the basic sampling period ΔT (for example, 0.5 ms) of the digital filter 21, the time during which the filtering operation is permitted. The maximum thinning-out number N that can obtain the weighing data number P is calculated and input to the digital filter 21 as data D6.

In this state, when the leading end of the article 15 sent by the transport belt 6 reaches the upstream end of the transport belt 4, a detection signal D 4 is input from the photoelectric sensor 7 to the microcomputer 28. The microcomputer 28 prohibits the photoelectric sensor 7 from detecting the article 15 for a time T _{0 after} the detection signal D4 is input from the photoelectric sensor 7. This is a measure for preventing the photoelectric sensor 7 from detecting one article 15 as a plurality of articles 15 before the article 15 is completely transferred from the conveyor belt 6 to the conveyor belt 4. When the time T ₀ has elapsed and the article 15 has completely transferred to the conveying belt 4, the microcomputer 28 inputs an operation command to the digital filter 21, and the weighing data D 1 from the weighing instrument 5 is received at a constant sampling period. Sampling is performed at ΔT.

  The digital filter 21 sequentially thins out the weighing data D1 fetched at the sampling period ΔT in accordance with the thinning number N instructed from the microcomputer 28, and removes the high frequency component contained in the weighing data D1.

When the response time T _N elapses and the weighing data D2 starts to be output from the digital filter 21, the microcomputer 28 sequentially stores the plurality of weighing data D2 in the lightweight data storage circuit 22 based on the control signal D7. . The microcomputer 28 stops the sampling operation of the digital filter 21 at the time when the time T ₃ previously obtained by calculation has elapsed, and prevents the measurement data having low reliability from being taken in thereafter.

  The microcomputer 28 reads a plurality of pieces of measurement data D2 stored in the measurement data storage circuit 22 as measurement data D3, and most likely data D8 (for example, maximum value, average value, frequent frequency) among the plurality of measurement data D3. Value). The data D8 is sent to the display means 11, and is displayed on the display screen 11a as the weighing result of the article 15.

  As described above, in the weight inspection apparatus 100 according to the present embodiment, the condition is determined by inputting the operating speed V of the transport belt 4 and the length L of the article 15 in the transport direction from the input unit 30. The microcomputer 28 as means is configured to automatically set the filtering condition of the digital filter 21, that is, the operating condition of the apparatus, based on the input speed V and length L. In addition, when there are a plurality of articles 15 to be inspected, the above processing for setting the operating conditions of the apparatus does not need to be performed for all the articles 15 and is arbitrarily extracted from the plurality of articles 15. It only needs to be done on one (or more) sample.

  Hereinafter, a method for measuring the length L and a data input method for inputting the length L of the article 15 in the conveyance direction from the input unit 30 will be described. In the following description, the display of the image on the display screen 11a is performed by the microcomputer 28 shown in FIG.

  FIG. 4 is a front view showing a first example of an image displayed on the display screen 11a. On the display screen 11a, a scale 50 in millimeter units is displayed in actual size. A numeric keypad 51 as a numerical value input window is displayed in parallel with the scale 50 on the display screen 11a. The operator holds the article 15 in his / her hand and brings it close to or in contact with the display screen 11a, and measures the length L of the article 15 in the transport direction using the scale 50 displayed on the display screen 11a. Thereafter, the operator inputs the measured value of the length L of the article 15 thus measured using the numeric keypad 51. The input measurement value is displayed on the display screen 11a for convenience of confirmation by the operator.

  According to the example shown in FIG. 4, the operator measures the length L of the article 15 using the full scale 50 displayed on the display screen 11 a, and then measures the length L measured in this way. The measured value can be input from the numeric keypad 51 also displayed on the display screen 11a. Therefore, compared with the conventional apparatus which measures the length L of the article 15 using the scale seal affixed to the casing of the inspection apparatus, the scale 50, the numeric keypad 51, and the display of the measured value are close to each other in space. Since they exist (particularly, they are collected on one display screen 11a in this example), it is possible to reduce the possibility that the measurement value of the length L is erroneously input by the operator. Moreover, it is possible to avoid a situation in which the scale seal attached to the housing is peeled off and mixed into the article.

  FIG. 4 shows the case where the scale 50 and the numeric keypad 51 are displayed in parallel on the same screen. However, the screen where the scale 50 is displayed and the screen where the numeric keypad 51 is displayed are switched. It may be displayed. However, in the case where the images are displayed in parallel on the same screen, the operator does not need to switch the screen, so that the possibility that the measured value of the length L is erroneously input by the operator is lower.

  FIG. 5 is a front view showing a second example of an image displayed on the display screen 11a. Similar to the example shown in FIG. 4, a full scale scale 50 is displayed on the display screen 11 a. On the other hand, unlike the example shown in FIG. 4, in the example shown in FIG. 5, the numeric keypad 51 is not displayed on the display screen 11a. The operator brings the article 15 close to or in contact with the display screen 11 a and aligns one end of the article 15 in the conveyance direction with the start end (0 mm) of the scale 50. Then, the operator designates a point on the scale 50 corresponding to the other end of the article 15 by touching with the light pen 53 or a fingertip. Then, the length indicated by the point on the scale 50 is automatically input as the length L of the article 51. For example, the CPU 23 shown in FIG. 2 calculates a difference value between the position coordinate in the display screen 11a corresponding to the starting end of the scale 50 and the position coordinate in the display screen 11a corresponding to the designated point, and the difference A value is converted into a length L and input. Alternatively, a conversion table describing the correspondence between coordinates and lengths is stored in the ROM 24 in advance, and the length corresponding to the position coordinates of the designated point is derived from the conversion table and input as the length L. . In the example shown in FIG. 5, the input value is displayed on the display screen 11a for the convenience of confirmation by the operator, as in the example shown in FIG. In order to cancel the input, the delete button 54 displayed on the display screen 11a may be touched.

  According to the example shown in FIG. 4, the operator designates a point on the scale 50 corresponding to the other end of the article 15 in a state where one end of the article 15 is aligned with the start end of the scale 50 on the display screen 11 a. Thus, the length L of the article 15 is obtained. Then, the measured value of the length L thus obtained is automatically input without any operator input operation. Therefore, it is possible to avoid the possibility that the measurement value of the length L is erroneously input by the operator.

  FIG. 6 is a front view showing a third example of an image displayed on the display screen 11a. 4 and 5, buttons 52a and 52b for selecting a preset scale unit are displayed on the display screen 11a. In each of the examples shown in FIGS. 4 and 5, since the button 52a corresponding to the millimeter unit has been selected, the scale 50 in the millimeter unit is displayed on the display screen 11a. For example, in the example shown in FIG. 4, when the operator touches the button 52b corresponding to the inch unit, the scale 50 in the millimeter unit is switched to the scale 55 in the inch unit as shown in FIG. In consideration of the possibility that the scale 55 in inches is used by a user in the United States, the display language on the screen is all switched from Japanese to English. For example, the numeric keypad 51 and buttons 52a, 52b in Japanese are switched to the numeric keypad 56 and buttons 57a, 57b in English. By storing a plurality of types of image data in the ROM 24 or RAM 25 in advance, and selecting a corresponding image and displaying it on the display screen 11a depending on which of the buttons 52a and 52b is selected by the operator. This can be realized.

  Thus, the convenience of the user can be improved by switching and displaying the scales 50 and 55 for various length units such as millimeter units and inch units.

  FIG. 7 is a front view showing a fourth example of an image displayed on the display screen 11a. In the first to third examples, after the measurement value of the length L is input, only the length portion corresponding to the input measurement value is the remaining length of the total length of the scales 50 and 55. Graphically displayed so that it can be visually distinguished from the part. That is, the length corresponding to the input measurement value on the scales 50 and 55 is graphically displayed on the display screen 11 a along the scales 50 and 55. In the example shown in FIG. 7, since the input measurement value is 100.0 mm, only the portion 58 of 0 to 100.0 mm in the total length of the scale 50 is colored and displayed in a color different from the remaining portion. . For example, this can be realized by redisplaying a screen in which the images of the scales 50 and 55 are partially rewritten in accordance with the above after the measurement value of the length L is input.

  On the display screen 11a shown in FIG. 7, the operator compares the length by bringing the article 15 close to or in contact with the scale 50, thereby determining whether or not there is an error in the input of the measurement value of the length L. It can be easily confirmed.

In the above first to fourth examples, the input allowable range related to the measurement value of the length L is preset and stored in the ROM 24 or the RAM 25, and the allowable range is displayed on the display screen 11a. ing. For example, in the example shown in FIG. 4, the allowable range is set to 10 to 240 mm. When an operator tries to input a value outside this allowable range as a measured value of length L, a message warning that the measured value has been entered incorrectly after entering the measured value is displayed on the display screen. 11a. Alternatively, a message that warns that a measurement value is erroneously input is displayed on the display screen 11a without accepting the input of the measurement value outside the allowable range. However, instead of displaying a message on the display screen 11a, notification may be given by sound from a speaker (not shown). For example, when the measurement value of the length L is input, the CPU 23 compares the input value with the upper limit value and the lower limit value of the allowable range stored in the ROM 24 or RAM 25, and the input value is set to the upper limit value. When it exceeds or falls below the lower limit, the above warning / prohibition processing is performed. The upper limit value of the allowable range may be set according to the maximum display value of the scales 50 and 55 that can be displayed on the display screen 11a in relation to the screen size of the display screen 11a. For example, in the example shown in FIG. 4, if the lateral dimensions L _M of the display screen 11a is, for example, 240mm, since the on the display screen 11a can display the scale 50 of the longest 240mm, the upper limit value of the acceptable range Is also set to 240 mm.

  If an attempt is made to input a measured value of length L that deviates from the allowable range, a warning is issued or such input itself is prohibited, so that the operating conditions are determined with a significant error in the measured value of length L. This can be easily prevented. Further, by setting the upper limit value of the allowable range according to the display maximum value of the scales 50 and 55, a large value that cannot be measured by the scales 50 and 55 displayed on the display screen 11a is measured for the length L. It is possible to easily prevent erroneous input as a value.

  Next, selection of a dimension to be measured / input as the length L will be described. FIG. 8 is a top view of the article 15. The article 15 has a rectangular top surface structure composed of a short side A1 and a long side A2. In the example shown in FIG. 1, for example, when the conveyance direction of the article 15 is a direction along the long side A2, the length of the long side A2 is measured by the method described with reference to FIGS. Are input as measured values. However, regardless of whether the conveyance direction of the article 15 is the direction along the short side A1 or the direction along the long side A2, the dimension of the diagonal line A3 is measured and input as a measurement value of the length L. Also good. That is, the maximum dimension (diagonal line in the case of a quadrangle) of the article 15 that can be defined with respect to the conveyance direction may be measured and input as the length L.

  If a length shorter than the actual dimension of the article 15 in the transport direction is erroneously entered as the length L, a situation may occur in which the accuracy of weight inspection decreases due to this. For example, since the prohibition of re-detection of the photoelectric sensor 7 is released before the article 15 is completely transferred from the conveying belt 6 to the conveying belt 4, the photoelectric sensor 7 detects one article 15 as a plurality of articles 15. A situation can occur. On the other hand, when the maximum dimension of the article 15 that can be defined with respect to the transport direction is measured and input as the length L, even if a slight error occurs in the measurement of the length L or its input, it is related to the transport direction. Since a length shorter than the actual dimension of the article 15 is not input as the length L, the problem caused by the error is only a decrease in the processing speed, and the weight inspection accuracy is prevented from decreasing. can do.

It is a front view which shows typically the structure of the weight inspection apparatus which concerns on embodiment of this invention. It is a block diagram which shows the structure of a control part. It is a block diagram which shows the function which a microcomputer has regarding the setting of filtering conditions. It is a front view which shows the 1st example of the image currently displayed on the display screen. It is a front view which shows the 2nd example of the image currently displayed on the display screen. It is a front view which shows the 3rd example of the image currently displayed on the display screen. It is a front view which shows the 4th example of the image currently displayed on the display screen. It is a top view of articles | goods.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Weighing part 4 Conveyor belt 5 Weighing device 11 Display apparatus 11a Display screen 21 Digital filter 28 Microcomputer 30 Input means 50, 55 Scale 51, 56 Numeric keypad 52a, 52b, 57a, 57b Button 53 Light pen 58 Part 100 Weight inspection device

Claims (8)

An inspection apparatus that performs inspection while conveying an inspection target article, and operating conditions are determined according to the dimensions of the inspection target article,
Display means having a display screen;
Scale display control means for displaying a scale of length on the display screen in actual size,
Input means for inputting a measurement value measured using the scale,
Condition determining means for determining the operating condition based on the measured value input by the input means;
A sensor for detecting an article to be inspected;
Equipped with a,
The re-detection prohibition time for prohibiting detection by the sensor from the time when the sensor detects the inspection target article is calculated based on the measurement value input from the input means,
In the input device, the length of a diagonal line that is the maximum dimension of the inspection target article that can be defined with respect to the conveyance direction is input as the measurement value . The input means includes
Input display control means for displaying a numerical value input window on the display screen in parallel with the display of the scale,
Measurement value input means for inputting the measurement value from the numerical value input window;
The inspection apparatus according to claim 1, comprising: The input means includes
Point designating means for designating points on the scale on the display screen;
A measurement value input means for inputting the length indicated by the point on the scale as the measurement value;
The inspection apparatus according to claim 1, comprising: The scale display control means includes
Unit selecting means for selecting one length unit from a plurality of preset length units;
Unit-based scale display means for displaying the scale corresponding to the one length unit as the scale on the display screen;
The inspection apparatus according to any one of claims 1 to 3, further comprising:   5. The inspection apparatus according to claim 1, wherein the scale display control unit displays the measurement value input by the input unit on the display screen in association with the scale. 6. . The allowable range of the measured value is preset,
Warning means for issuing a warning when a value outside the allowable range is input from the input means as the measured value;
The inspection device according to claim 1, further comprising: The allowable range of the measured value is preset,
Prohibiting means for prohibiting the input means from inputting a value outside the allowable range as the measurement value;
The inspection device according to claim 1, further comprising:   The inspection apparatus according to claim 6 or 7, wherein the upper limit value of the allowable range is set according to a display maximum value of the scale displayed on the display screen.

Images