JP2012225655A - Scale - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scale suitable for a recyclable waste collection system for adding points in accordance with the weight of recyclable waste when collecting recyclable waste allowed to be regenerated or reused.SOLUTION: A scale 7 is configured by a load cell 1 for weighing recyclable waste and outputting a weighing signal corresponding to the weight of the recyclable waste, a weight calculation part 2 for inputting the weighing signal and calculating and outputting weight data to be the weight of the recyclable waste being weighed at present and a weight indication part 3 for inputting the weight data and indicating the weight of the recyclable waste. In the weight calculation part 2, a scale indicator is less than 100 and a plurality of weighing ranges having respectively different scale intervals are set. The scale 7 switches the weighing ranges in accordance with the weighing signal inputted from the load cell 1 and outputs the weight data to be the weight of the recyclable waste to the weight indication part 3 in accordance with the switched weighing ranges.

Description

  The present invention relates to a measuring instrument suitable for a resource garbage collection system that adds points in accordance with the weight of resource garbage when collecting recyclable or reusable resource garbage (for example, waste paper).

  Recyclable or reusable resource garbage is usually collected by local governments, but in recent years, resource garbage collection systems that add points according to weight have become increasingly common. For example, as disclosed in Patent Document 1, the waste collection point system is loaded into a means for reading data from a recording medium for each user, a plurality of collection boxes for storing resource garbage for each type, and each collection box. A measuring instrument for measuring the weight of the resource garbage and means for writing points on the recording medium in accordance with the weight of the resource garbage put in the collection box (Patent Document 1 and Claim 1). ] [0005]). An IC card is exemplified as a writable and non-rewritable recording medium (Patent Document 1, [0006]).

JP 2001-233402 A

  The resource garbage collection system disclosed in Patent Document 1 uses a measuring instrument that adds and measures the resource garbage thrown into the collection box, while the calculation unit calculates the weight before the resource garbage is added from the weight after the resource garbage is thrown in. Is deducted and the weight of the resource garbage input is calculated, and the point to be written on the recording medium is calculated from the weight of the resource garbage (Patent Document 1, [0011]). From now on, if the collection box has a capacity that can throw in resource garbage up to 500 kg, a measuring instrument that can weigh up to 500 kg will be used. To be exact, since the weighing instrument also measures the weight of the collection box, it is necessary to be able to weigh 500 + αkg, but for the sake of simplicity, here we will talk as a weighing instrument that can weigh up to 500kg.

  A scale that can weigh up to 500 kg needs 500 scales if the scale is 1 kg. Thus, a measuring instrument with a scale of 100 or more is designated as a specific measuring instrument (Measurement Law Enforcement Ordinance, Article 2, Paragraph 2, Item (1)), and must be regularly inspected for commercial use. The resource garbage collection system disclosed in Patent Document 1 needs to use the specific measuring instrument, and has a problem that operation costs increase due to periodic inspection. Weighing resource trash is only for the purpose of confirming that the collected resource trash is within the capacity of the collection box and for calculating points according to the weight of the resource trash. In order to operate, we want to avoid an increase in operation cost due to the inspection.

  If you turn it over, you can use a measuring instrument that does not correspond to a specific measuring instrument to check that the collected garbage is within the capacity of the collecting box, and it is thrown into the collecting box to calculate the points to be returned to the user. It is only necessary to be able to measure the weight of recyclable garbage every time. Therefore, when collecting recyclable or reusable resource garbage, we studied to develop a measuring instrument suitable for a resource garbage recovery system that adds points according to the weight of the resource garbage and does not correspond to a specific measuring instrument. .

  As a result of the study, we developed a weighing unit that weighs an object and outputs a weighing signal according to the weight, and inputs the weighing signal to calculate weight data that is the weight of the object currently being weighed. And a weight display unit that inputs the weight data and displays the weight of the object, and the weight calculation unit has a plurality of weighing ranges with scale marks less than 100 and different scales. The weighing instrument is characterized in that the weighing range is switched according to the weighing signal set and inputted from the weighing unit, and weight data, which is the weight of the object, is output to the weight display unit according to the switched weighing range. The weighing unit, the weight calculation unit, and the display unit mean functionally distinguished components, and may be housed in a physically integrated casing.

  The target object means an article to be weighed, and becomes resource garbage in the resource garbage collection system. The weighing unit may be of any type as long as it can measure an object and output a weighing signal according to the weight. However, when the weighing device of the present invention is used in a resource garbage collection system, a load cell equipped with a collection box is suitable. . The resource garbage collection system measures the resource garbage using the measuring instrument of the present invention, and the information processing unit from the weight data output by the weight calculation unit, the accumulated point data corresponding to the management number of the user read by the card reader The point to be added to is calculated, and the point is transmitted to an external management apparatus. As point cards, in addition to magnetic cards and IC cards with fixed surface printing, punch cards, thermal printing cards, and rewritable cards that can be additionally updated or rewritten with the printing of the magnetic recording can be used.

  Since the weighing instrument of the present invention outputs weight data by switching a plurality of weighing ranges having a scale mark less than 100, that is, less than 100 scales and different scales, a specific weighing instrument can be selected regardless of which weighing range is selected. Not applicable. When a plurality of weighing ranges exceed a set maximum value (threshold value), the weighing range is switched to the next largest weighing range. For example, the first weighing range can measure up to 98 kg at the 1st scale, 98 scale, the second weighing range up to the 2 kg scale, up to 190 kg at the 95th scale, and the third weighing range up to 5 kg scale, up to 495 kg at the 99th scale. If the weight of the object is 98 kg or less, the first weighing range, if the weight of the object exceeds 98 kg and less than 190 kg, the second weighing range, and if the weight of the object exceeds 190 kg and less than 495 kg, the first weighing range. Weighing in 3 weighing ranges. The combination of the number of scale marks and the scale amount is free as long as the scale marks are less than 100.

  According to the present invention, it becomes possible to construct a resource garbage collection system using a measuring instrument that does not correspond to a specific measuring instrument, so that it is not necessary to periodically inspect the measuring instrument in the resource garbage collection system, and the resource garbage collection system is The effect that can reduce the operation cost is obtained.

It is a block diagram showing an example of the resource garbage collection system constructed | assembled using the measuring device of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. As shown in FIG. 1, the measuring instrument 7 of the present invention is suitably used for a resource garbage collection system that collects used paper as resource garbage, for example. The resource garbage collection system of this example includes a load cell 1, a weight calculation unit 2, a weight display unit 3, an information processing unit 4, a weight storage unit 5, and a card reader 6. The measuring instrument 7 of the present invention includes the load cell 1, the weight calculation unit 2, and the weight display unit 3. The resource garbage collection system of this example is an example, and if the measuring instrument 7 of the present invention is used, for example, the card reader 6 relating to point grant may be in another place connected to the network.

  The load cell 1 weighs the resource garbage thrown into the collection box 11 together with the collection box 11 to be mounted, and outputs a weighing signal corresponding to the weighed weight to the weight calculation unit 2. The weighing signal is a voltage signal proportional to the weight. The weight measured by putting the resource garbage into the collection box 11 is the weight including the collection box 11. From now on, the resource garbage collection system of this example measures the collection box 11 in advance, stores the measurement signal of the collection box 11 output to the weight calculation unit 2 as an offset level, and throws the resource garbage into the collection box 11 Then, the offset level is subtracted from the weighing signal obtained in this way to obtain a net resource garbage weighing signal.

  As described above, the weight calculation unit 2 subtracts the offset level of the collection box 11 from the weighing signal output from the load cell 1 to obtain the net resource garbage measurement signal, and based on the net resource garbage measurement signal. The weighing range is switched, weight data according to the scale of the weighing range is calculated, and output to the weight display unit 3 and the information processing unit 4. The weight data is digital data obtained by digitizing the weighing signal, and the scale weight varies depending on the weighing range. The weight calculation unit 2 sets the measurement signal threshold value for switching the measurement range and the measurement range. The weight display unit 3 displays the input weight data, and the information processing unit 4 updates the accumulated weight data and the accumulated point data based on the weight data.

  The measuring instrument 7 in this example has a first weighing range with a scale of 1 kg and a scale indicator of 98, a second measuring range with a scale of 2 kg and a scale indicator of 95, a scale of 5 kg and a scale indicator of 99. A third weighing range is set. Switch from the first weighing range to the second weighing range when the weighing signal minus the offset level of the collection box 11 exceeds the threshold value equivalent to 98 kg, which is the maximum value of the first weighing range. Switching to the third weighing range is performed when the weighing signal exceeds a threshold value corresponding to 190 kg which is the maximum value of the second weighing range.

  For example, if the weighing signal obtained by subtracting the offset level corresponds to 59 kg, the weight calculation unit 3 calculates the weight data in the first weighing range and outputs the 59 kg weight data to the weight display unit 3 and the information processing unit 4. The first weighing range has a scale of 1 kg, and the weight of less than 1 kg is rounded up to the nearest 500 g and rounded down to the nearest 500 g. If the weighing signal with the offset level subtracted corresponds to 121 kg, the weight calculation unit 3 calculates the weight data obtained by rounding off the second weighing range. For example, the weight data of 122 kg obtained by rounding up 121 kg to the first digit is weighted. The data is output to the display unit 3 and the information processing unit 4. The rounding process is a necessary process because the weight data of 121 kg cannot be calculated with a scale of 2 kg in the second weighing range, rounding up to the nearest 1 kg and rounding off to the nearest 1 kg. This also applies to the third weighing range, rounded up to the nearest 2.5 kg and rounded off to the nearest 2.5 kg.

  The weight display unit 3 displays the weight data output from the weight calculation unit 2 as digital numbers, for example. As described above, the weight data output from the weight calculation unit 2 is rounded off to the nearest 500 g in the first weighing range and rounded down to the nearest 500 g, rounded to the nearest 1 kg in the second weighing range. In the third weighing range, rounding is rounded up to 2.5 kg or more and rounded down to less than 2.5 kg. From now on, the weight display unit 3 is in increments of 1 kg over 0 kg to 98 kg or less (first weighing range), over 98 kg to 190 kg or less (second weighing range), and over 190 kg to over 495 kg ( The third weighing range) displays the weight in 5kg increments.

  The information processing unit 4 is a core part that cumulatively adds the measured weights and manages the total amount of resource garbage put into the collection box 11, and converts the weight of resource garbage as points as a resource garbage collection system. The information processing unit 4 is generally a personal computer, and sets or changes the conversion ratio of points according to weight data, the printing contents of the point card 61 which is a rewritable card, and the like. In addition, preparation for starting the measurement of resource garbage (for example, sending a reset signal to the weight calculation unit 2) triggered by the reading of the user management number from the point card 61 inserted into the card reader 6; The point added to the accumulated point data together with the management number of the user is transmitted to the external management device 8 or the updated weight data is written in the weight storage unit 5 when the insertion completion button 41 is pressed. . The information processing unit 4 and the management device 8 are connected by a wired or wireless network.

  The weight storage unit 5 is a part for storing cumulative weight data in which the weights of resource garbage measured so far are added as needed, and an internal or external storage device is used. The information processing unit 4 reads the accumulated weight data from the weight storage unit 5 every time resource garbage is weighed, and adds the weight data of the new resource garbage weighed to the accumulated weight data to obtain updated weight data. Calculation is performed to check whether or not the updated weight data exceeds the allowable range of the collection box 11, and the total amount of resource garbage collected is managed. The updated weight data is output to the weight storage unit 5 and becomes cumulative weight data when new resource waste is weighed next time.

  The card reader 6 is a part for inserting the user's point card 61, reading the user's management number stored in the point card 61, and sending it to the information processing unit 4. The user management number is magnetically recorded on the newly created point card 61 in a non-rewritable manner, and is used as the identification number of the user who manages the points. The information processing unit 4 transmits a point corresponding to the newly weighed weight of the resource garbage together with the management number to the external management device 8. When the point card 61 is a rewritable card, the print content is also updated. The card reader 6 of this example is provided with a point display unit 62 for displaying accumulated point data when the point card 61 is inserted and updated point data to be written.

  The resource garbage collection system of this example collects resource garbage as follows and returns points to the user. First, when the user inserts the point card 61 into the card reader 6, the user management number is read into the information processing unit 4. Using this management number reading as a switch, the information processing section 4 sends a reset signal to the weight calculation section 2 to reset the weight data to “0 (zero)”. Since the total amount of collected resource garbage is stored in the weight storage unit 5, there is no problem even if the weight calculation unit 2 and the weight display unit 3 are reset. At the same time, the accumulated weight data is read from the weight storage unit 5 into the information processing unit 4.

  When the user puts resource garbage into the collection box 11, an arbitrary clock amount signal is sent to the weight calculation unit 2 to calculate weight data corresponding to the weight of the resource garbage input from the measurement signal. The weight data is sent to the information processing unit 4 and the weight display unit 3 as needed, and the weight display unit 3 changes the displayed weight at any time, but the information processing unit 4 sends the weight sent until the loading completion button 41 is pressed. Do not perform processing based on data. When the user completes the input of all the resource garbage and presses the input completion button 41, the weight calculation unit 2 determines the weight data, the weight display unit 3 displays the determined weight data, and the information processing unit 4 Based on the weight data determined, the processing such as point addition and storage of the total amount of resource garbage is started.

  The information processing unit 4 calculates a point to be added according to a predetermined conversion rule based on the determined weight data, and transmits the calculated point to the management device 8 together with the user management number. Then, the management device 8 calculates the update point data by adding the points to the accumulated point data corresponding to the management number, and stores it. In the case of the rewritable point card 61, the printed content printed on the surface of the point card 61 is updated at this time. Further, the accumulated point data is read from the management device 8 to the information processing unit 4 in advance, and the accumulated point data, added points, update point data, etc. are displayed on the point display unit 62 attached to the card reader 6. Also good. The user can confirm the relationship between the weight of the collected resource garbage and the given points by looking at the weight display unit 3 and the point display unit 62.

  Further, the information processing unit 4 calculates updated weight data by adding the determined weight data to the previously read cumulative weight data based on the determined weight data, and stores the updated weight data in the weight storage unit 5. . At this time, it is checked whether or not the updated weight data exceeds the allowable range of the collection box 11. For example, if the total amount of resource garbage that can be thrown into the collection box 11 is known, an upper limit and a lower limit are set for the total amount, an allowable range is set, and the updated weight data falls within or exceeds the allowable range. The unit 4 may notify the outside that the collection box 11 is full or notify the external management device 8 via the network. If there is a notification from the information processing unit 4 or a notification to the management device 8 in this manner, the collection box 11 filled with resource garbage is collected, and the empty collection box 11 is mounted on the load cell 1.

1 Load cell
11 Collection box 2 Weight calculation unit 3 Weight display unit 4 Information processing unit
41 Insertion completion button 5 Weight storage 6 Card reader
61 point card
62 Point display section 7 Weighing device 8 Management device

Claims (1)

A weighing unit for weighing an object and outputting a weighing signal according to the weight;
A weight calculator that inputs the weighing signal, calculates weight data that is the weight of the object currently being weighed, and outputs the weight data;
It is composed of a weight display unit for inputting the weight data and displaying the weight of the object,
The weight calculation unit is set with a plurality of weighing ranges with scale marks less than 100 and different scales, and switches the weighing range according to the weighing signal input from the weighing unit. A weighing instrument that outputs certain weight data to a weight display section.

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