CN112241780A - Device and method for acquiring quantity of articles - Google Patents
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Abstract
The invention discloses a device and a method for acquiring the quantity of articles, and relates to the technical field of electronics. One embodiment of the apparatus comprises: the object placing plate is uniformly provided with a plurality of contact switches; the contact switches are uniformly connected in parallel or in series in a preset circuit containing an electric signal measuring unit and are in the same switch state when no article is placed on the article placing plate; each contact switch changes the switch state when being pressed by the articles placed on the article placing plate; when at least one target object is placed on the object placing plate in a non-overlapping manner, the electric signal measuring unit obtains electric signal measuring data, and the electric signal measuring data are used for determining the number of the contact switches with the switch states changed so as to obtain the number of the target objects. This embodiment can accurately acquire the target article quantity of placing on putting the thing board automatically.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a device and a method for acquiring the quantity of articles.
Background
The storage article checking is a process of checking and checking the quantity of articles regularly or irregularly in order to ensure the completeness of the quantity of the storage articles, and the current main methods comprise manual checking and bar code gun checking. The two methods have low efficiency and poor accuracy, and are easy to cause shortage or overstock of stocks.
Disclosure of Invention
In view of this, embodiments of the present invention provide an apparatus and a method for acquiring the quantity of an object, which can automatically and accurately acquire the quantity of a target object placed on an object placing plate.
To achieve the above object, according to one aspect of the present invention, there is provided an apparatus for acquiring the number of articles.
The device for acquiring the quantity of the articles in the embodiment of the invention comprises: the object placing plate is uniformly provided with a plurality of contact switches; the contact switches are uniformly connected in parallel or in series in a preset circuit containing an electric signal measuring unit and are in the same switch state when no article is placed on the article placing plate; each contact switch changes the switch state when being pressed by the articles placed on the article placing plate; when at least one target object is placed on the object placing plate in a non-overlapping manner, the electric signal measuring unit obtains electric signal measuring data, and the electric signal measuring data are used for determining the number of the contact switches with the switch states changed so as to obtain the number of the target objects.
Optionally, the electrical signal measuring unit is an ammeter, and the circuit further includes: the power supply and equivalent resistors with the same number as the contact switches arranged on the object placing plate; wherein the ammeter is connected in series with a main circuit of the circuit; each contact switch is connected with an equivalent resistor in series to form a switch assembly; for each switch assembly, one end of the switch assembly is connected with one pole of the power supply, and the other end of the switch assembly is connected with one end of the ammeter.
Optionally, when no article is placed on the object placing plate, each contact switch is in an off state; and, the apparatus further comprises an arithmetic unit for: determining the number of the contact switches in the closed state at present according to the pre-established corresponding relation between the number of the contact switches in the closed state and the electric signal measurement data acquired by the electric signal measurement unit at present; multiplying the determined number of the contact switches by the area of the object placing plate distributed by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target objects on the object placing plate, and judging whether the quotient of the sum of the bottom areas and the bottom area of the single target object is an integer; when the quotient is an integer, determining the quotient as the number of the target items placed on the storage plate; and when the quotient is not an integer, determining that the object except the target object is placed on the object placing plate.
Optionally, when no article is placed on the object placing plate, each contact switch is in an off state; and, the apparatus further comprises an arithmetic unit for: and when the electric signal measurement data acquired by the ammeter is judged to be zero, determining that no article is placed on the object placing plate.
Optionally, the electrical signal measuring unit comprises: an ammeter, voltmeter, or ohmmeter; the electrical signal measurement data comprises: current data, voltage data, or resistance data; the contact switch includes: a tact switch and/or a membrane switch.
To achieve the above object, according to another aspect of the present invention, there is provided another apparatus for acquiring the number of articles.
The device for acquiring the quantity of the articles in the embodiment of the invention comprises: the device comprises a storage plate, a pressure sensor and a bottom plate, wherein the storage plate is uniformly provided with a plurality of contact switches; the contact switches are uniformly connected in parallel or in series in a preset circuit containing an electric signal measuring unit and are in the same switch state when no article is placed on the article placing plate; each contact switch changes the switch state when being pressed by the articles placed on the article placing plate; when at least one target object is placed on the object placing plate, the electric signal measuring unit obtains electric signal measuring data, and the pressure sensor obtains pressure data of the target object; wherein the electrical signal measurement data and the pressure data are used in conjunction with one another to determine a target item quantity.
Optionally, the electrical signal measuring unit is an ammeter, and the circuit further includes: the power supply and equivalent resistors with the same number as the contact switches arranged on the object placing plate; wherein the ammeter is connected in series with a main circuit of the circuit; each contact switch is connected with an equivalent resistor in series to form a switch assembly; for each switch assembly, one end of the switch assembly is connected with one pole of the power supply, and the other end of the switch assembly is connected with one end of the ammeter.
Optionally, when no article is placed on the object placing plate, each contact switch is in an off state; and, the apparatus further comprises an arithmetic unit for: determining the number of the contact switches in the closed state at present according to the pre-established corresponding relation between the number of the contact switches in the closed state and the electric signal measurement data acquired by the electric signal measurement unit at present; multiplying the determined number of the contact switches by the area of the object placing plate distributed by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target objects on the object placing plate, and dividing the sum of the bottom areas by the bottom area of the single target object to obtain a first quotient; dividing the pressure data currently acquired by the pressure sensor by the gravity of a single target object to obtain a second quotient; when the first quotient value and the second quotient value are judged to be integers, the second quotient value is determined as the number of the target articles placed on the object placing plate; and when the first quotient value or the second quotient value is judged not to be an integer, determining that the object plate is provided with objects except the target object.
Optionally, when no article is placed on the object placing plate, each contact switch is in an off state; and, the apparatus further comprises an arithmetic unit for: and when the electric signal measurement data acquired by the ammeter and the pressure data acquired by the pressure sensor are both judged to be zero, determining that no article is placed on the object placing plate.
Optionally, the electrical signal measuring unit comprises: an ammeter, voltmeter, or ohmmeter; the electrical signal measurement data comprises: current data, voltage data, or resistance data; the contact switch includes: a tact switch and/or a membrane switch.
To achieve the above object, according to still another aspect of the present invention, there is provided a method for acquiring an item quantity using an apparatus for acquiring an item quantity.
The method for acquiring the quantity of the articles in the embodiment of the invention comprises the following steps: when the electric signal measurement data currently acquired by the electric signal measurement unit is judged to be predetermined fixed value data or the pressure data currently acquired by the pressure sensor is judged to be zero, determining that no article is placed on the object placing plate; when the electric signal measurement data currently acquired by the electric signal measurement unit is judged not to be the fixed value data and the pressure data currently acquired by the pressure sensor is judged not to be zero: determining the number of the contact switches in the closed state at present according to the pre-established corresponding relation between the number of the contact switches in the closed state and the electric signal measurement data acquired by the electric signal measurement unit at present; multiplying the determined number of the contact switches by the area of the object placing plate distributed by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target objects on the object placing plate, and dividing the sum of the bottom areas by the bottom area of the single target object to obtain a first quotient; dividing the pressure data currently acquired by the pressure sensor by the gravity of a single target object to obtain a second quotient; when the first quotient value and the second quotient value are judged to be integers, the second quotient value is determined as the number of the target articles placed on the object placing plate; and when the first quotient value or the second quotient value is judged not to be an integer, determining that the object different from the target object is placed on the object placing plate.
To achieve the above object, according to still another aspect of the present invention, there is provided an electronic apparatus.
An electronic device of the present invention includes: one or more processors; the storage device is used for storing one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors realize the method for acquiring the quantity of the article provided by the invention.
To achieve the above object, according to still another aspect of the present invention, there is provided a computer-readable storage medium.
A computer-readable storage medium of the present invention has stored thereon a computer program which, when executed by a processor, implements the method of obtaining an item quantity provided by the present invention.
According to the technical scheme of the invention, one embodiment of the invention has the following advantages or beneficial effects. The invention provides two devices for automatically acquiring the quantity of articles:
the first device is suitable for the situation that articles are not stacked, and in the device, a plurality of contact switches are uniformly arranged on an object placing plate, and each contact switch is uniformly connected in a preset circuit. When the target object is placed on the object placing plate, the contact switch pressed by the object placing plate changes the switch state, and the electric signal measuring unit in the circuit acquires electric signal measuring data. And comparing the acquired electrical signal measurement data with the pre-established corresponding relation between the number of the contact switches in the closed state and the electrical signal measurement data to determine the number of the contact switches pressed by the target article, multiplying the number of the contact switches by the area allocated by a single contact switch to obtain the sum of the bottom areas of the target article, and dividing the sum of the bottom areas by the bottom area of the single target article to finally determine the number of the target article. Through the process, the automatic acquisition of the quantity of the articles is realized, the efficiency is high, and the error is not easy to occur. Meanwhile, whether other articles except the target article exist on the object placing plate can be judged by judging whether a first quotient obtained by dividing the base area sum by the base area of the single target article is an integer or not.
The second device adds a pressure sensor and a bottom plate for supporting the pressure sensor on the basis of the first device, thereby adding a way for calculating the quantity of the articles by using the pressure on the basis of the quantity of the articles acquired by the bottom area of the first device, and being suitable for various situations with article stacking and without article stacking. Specifically, in addition to obtaining the first quotient, the pressure data of the target object collected by the pressure sensor may be divided by the gravity of the single target object to obtain a second quotient, after which a determination is made: if the first quotient value and the second quotient value are both integers, taking the second quotient value as the target article quantity; if the first quotient value and the second quotient value have non-integer numbers, the object placing plate is considered to be placed with other objects. Compared with the method of calculating the quantity of the articles by using the pressure sensor alone, the device can be used in the scene that other articles and the target article have the same weight and different bottom areas.
Further effects of the above-mentioned non-conventional alternatives will be described below in connection with the embodiments.
Drawings
The drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:
FIG. 1 is a schematic view of an embodiment of a shelf and a contact switch;
FIG. 2 is a schematic view showing the structure of an apparatus for acquiring the quantity of an article according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of the circuit in which the contact switch is located in an embodiment of the invention;
FIG. 4 is another schematic diagram of the circuit in which the contact switch is located in an embodiment of the invention;
FIG. 5 is a schematic view showing the structure of an apparatus for counting articles according to a second embodiment of the present invention;
FIG. 6 is a schematic diagram of the main steps of a method for obtaining the quantity of an item according to an embodiment of the present invention;
FIG. 7 is an exemplary system architecture diagram in which embodiments of the present invention may be employed;
fig. 8 is a schematic structural diagram of an electronic device for implementing the method for acquiring the quantity of the item in the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
It should be noted that the embodiments of the present invention and the technical features of the embodiments may be combined with each other without conflict.
The invention provides two devices for acquiring the quantity of articles, wherein both the two devices comprise an object placing plate for placing the articles, and a plurality of contact switches are arranged on the object placing plate. The following description will be made with reference to a first embodiment and a second embodiment, respectively.
Fig. 1 is a schematic external view of an object placing plate and a contact switch according to an embodiment of the present invention, and fig. 2 is a schematic structural view of an apparatus for acquiring the number of objects according to a first embodiment of the present invention.
As shown in fig. 1 and 2, in the first embodiment, the device for obtaining the quantity of the items may include a storage plate 10, and in practical applications, the storage plate 10 may be mounted on the shelf structure 20. To enhance stability, a panel or structure supporting the shelf 10 may also be mounted beneath it. The object placing plate 10 is uniformly provided with a plurality of contact switches 11, and the contact switches 11 can be selected from a tact switch, a membrane switch and the like, and are used for changing the switch state (namely from open to close or from close to open) after being subjected to pressure generated by placed objects. It will be appreciated that the contact switch 11 is not limited to a tact switch, a membrane switch, but may be any other type of switch having a similar function. The above-described uniform arrangement means that the contact switches 11 arranged in this manner occupy the surface of the object placing plate 10 while maintaining the same arrangement pitch in both the horizontal direction and the vertical direction of the object placing plate 10 (in the case of the rectangular object placing plate shown in fig. 1, the horizontal direction and the vertical direction are the long direction and the wide direction thereof, respectively).
In a specific application, the contact switch 11 needs to be connected to a predetermined circuit, and the circuit can be implemented by wiring on the object placing plate 10, in which case the object placing plate 10 serves as a mounting plate of the contact switch 11 on one hand and serves as a circuit board on the other hand. The circuit may be such that the contact switch 11 is connected to a circuit device outside the storage board 10 by a cable, and in this case, the storage board 10 is merely a mounting plate for the contact switch 11. Generally, the circuit may include, in addition to the contact switches 11, equivalent resistors (i.e., each equivalent resistor has an equal resistance value) connected to each of the contact switches 11, an electric signal measuring unit, and a power supply. In this embodiment, the electrical signal measuring unit may be an ammeter, a voltmeter or an ohmmeter, the measured signal is a current, a voltage or a resistance, the power source may be an ac power source or a dc power source, and may be a voltage source or a current source.
In order to achieve the effect of determining the number of the contact switches with the changed switch states through the reading of the electrical signal measuring unit, which will be described below, in the present embodiment, preferably, a plurality of contact switches 11 may be uniformly connected in parallel or in series in the circuit (i.e., all the contact switches are connected in series or all the contact switches are connected in parallel in the circuit), and at the same time, for any two contact switches, the position of the two in the circuit is exchanged without affecting the operation of the circuit. In practical applications, all the contact switches 11 may be placed in the same switch state when no article is placed on the object placing plate 10, and for convenience of description, all the contact switches 11 are in the open state when no article is placed on the object placing plate 10, and any one of the contact switches is in the closed state after the switch state is changed. It will be appreciated that the situation in which the contact switch 11 is in the closed state when no article is placed is the same principle as the situation in the open state for the subsequent step of obtaining the number of articles, and that only the details of the implementation differ.
Fig. 3 is a schematic diagram of the circuit in which the contact switch is located in an embodiment of the invention. As shown in fig. 3, the circuit includes a power source U1 (voltage source, voltage U, and internal resistance R in fig. 3), an ammeter U2 (the internal resistance is negligible), contact switches K1, K2, and K3, and corresponding equivalent resistors R1, R2, and R3 (resistance R). Since each contact switch functions in the circuit identically, in the embodiment of the present invention, the schematic circuit diagram uses three contact switches to represent any number of contact switches, and it is understood that the number of contact switches in practical application may be hundreds, thousands or tens of thousands, which is not limited by the present invention.
In fig. 3, the ammeter is connected in series with the main circuit of the circuit; each contact switch is connected in series with an equivalent resistor to form a switch assembly, and for each switch assembly, one end of the switch assembly is connected with one pole (positive pole or negative pole) of a power supply, and the other end of the switch assembly is connected with one end of an ammeter. Without considering the internal resistance of the contact switch, when no contact switch is closed, the U2 reading is zero; when one contact switch is closed, the reading of U2 is U/(R + R), when two contact switches are closed, the reading of U2 is U/(R/2+ R), and when three contact switches are closed, the reading of U2 is U/(R/3+ R), so that the corresponding relation between the number of contact switches in the closed state and the current data measured by the ammeter can be obtained, and the number of closed contact switches can be judged according to the current ammeter reading.
It will be appreciated that in the circuit of fig. 3, measurements may be made using a voltmeter or an ohmmeter, and a similar function of ammeter U2 is achieved. Specifically, U2 may be eliminated, a voltmeter may be connected in parallel across the switch assembly, and a voltage dividing resistor (with a resistance value of a) may be connected in series in the main circuit. Under the condition that the influence of the internal resistance of the voltmeter on the circuit is not considered, when the contact switch is not closed, the reading of the voltmeter is U; when one contact switch is closed, the reading of the voltmeter is RU/(R + a + R), when two contact switches are closed, the reading of the voltmeter is (RU/2)/(R/2+ a + R), when three contact switches are closed, the reading of the voltmeter is (RU/3)/(R/3+ a + R), therefore, the corresponding relation between the number of contact switches in the closed state and the voltage data measured by the voltmeter can be obtained, and the number of closed contact switches can be judged according to the current reading of the voltmeter.
If an ohmmeter is used in the circuit of fig. 3, ammeter U2 and power supply U1 need to be removed and the ohmmeter connected in parallel across the switch assembly. Under the condition of not considering the internal resistance of the resistance meter, when no contact switch is closed, the reading of the resistance meter is infinite or a larger numerical value; when one contact switch is closed, the reading of the resistance meter is R, when two contact switches are closed, the reading of the resistance meter is R/2, when three contact switches are closed, the reading of the resistance meter is R/3, therefore, the corresponding relation between the number of the contact switches in the closed state and the resistance data measured by the resistance meter can be obtained, and the number of the closed contact switches can be judged according to the current reading of the resistance meter.
Fig. 4 is another schematic diagram of the circuit in which the contact switch is located in an embodiment of the invention. As shown in fig. 4, the power source U1 is connected in series with a resistor R0 (having a resistance b), each contact switch is connected in parallel with an equivalent resistor to form a switch member, all switch members are connected in series, and the voltmeter U3 is connected in parallel with the switch members connected in series. Without considering the effect of the resistance value of U3 on the circuit, the voltmeter reading is 3RU/(3R + b) when no contact switch is closed; when one contact switch is closed, the reading of U3 is 2RU/(2R + R + b), when two contact switches are closed, the reading of U3 is RU/(R + R + b), when three contact switches are closed, the reading of U3 is zero, so that the corresponding relation between the number of contact switches in the closed state and the voltage data measured by U3 can be obtained, and the number of closed contact switches can be judged according to the current U3 reading. It is to be understood that an ammeter or an ohmmeter may also be used in the circuit of fig. 4, and the principle is similar to that described above with reference to fig. 3 and will not be repeated here.
It should be noted that the circuits shown in fig. 3 and 4 are only two specific circuits that can be used in the device of the present invention, and do not limit the specific structure of the circuit used in the present invention. In fact, any circuit that achieves a one-to-one correspondence between the number of closed contact switches and the readings of the electrical signal measurement units may be used with the present invention. In addition, it can be understood that the above description mainly refers to the case where the contact switches are all in the open state when no article is placed on the object placing plate, and at this time, the number of the contact switches currently in the closed state obtained through the reading of the electrical signal measuring unit and the pre-established correspondence between the number of the contact switches in the closed state and the measurement data of the electrical signal is the number of the contact switches with the changed switch state. If the contact switches are in the closed state when no article is placed on the object placing plate, the number of the contact switches which change the switch state, namely, are in the open state at present, needs to be obtained, and then after the number of the contact switches which are in the closed state at present is obtained, the total number of the contact switches and the difference value of the total number of the contact switches need to be calculated, so that the number of the contact switches which are in the open state at present can be obtained. It is to be understood that the previously established correspondence between the number of contact switches in the closed state and the electrical signal measurement data may be replaced by a correspondence between the number of contact switches in the open state and the electrical signal measurement data.
The following describes a specific method for acquiring the number of articles using the apparatus of the present embodiment. Generally, in any of the above devices, it is necessary to previously determine an article (hereinafter, referred to as a target article) to be placed thereon, and when a plurality of target articles are placed, the same surface or a surface having the same area among different target articles may be used as a bottom surface (i.e., a surface of the article in contact with the placement plate). For example, when a plurality of target articles in a cubic shape are placed, the first surface of each target article may be used as the bottom surface; if the first surface and the second surface are equal in area, the first surface or the second surface of each target object may be used as the bottom surface. In actual situations, the base areas (i.e., areas of the bases) of different types of articles typically differ.
When the device of the embodiment is used for acquiring the quantity of the articles, the articles on the object placing plate are not required to be stacked, in other words, the bottom surface of each article required to be placed on the object placing plate is attached to the surface of the object placing plate. Specifically, the electrical signal measuring unit obtains electrical signal measurement data in the circuit, and the electrical signal measurement data can be calculated by the arithmetic unit included in the device of this embodiment to determine the number of contact switches in the closed state, so as to obtain the number of target articles. The communication between the arithmetic unit and the electrical signal measuring unit can be realized by a communication unit. In specific applications, the operation unit may be based on a micro control unit (mcu), a field Programmable Gate array (fpga), or the like, and the communication unit may be in any wired or wireless manner.
After the arithmetic unit receives the electric signal measurement data sent by the electric signal measurement unit, if the electric signal measurement data is fixed value data determined in advance, the object placing plate is determined not to be placed with objects. The fixed value data corresponds to a case where no contact switch is closed in the circuit. For example, for the circuit of FIG. 3, the fixed value data is zero. For the circuit of fig. 4, the fixed value data is 3RU/(3R + b).
If the electric signal measurement data is not fixed value data, the arithmetic unit determines the number of the contact switches in the closed state according to the pre-established corresponding relation between the number of the contact switches in the closed state and the electric signal measurement data currently acquired by the electric signal measurement unit. And then multiplying the determined number of the contact switches by the area of the object placing plate allocated by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target objects on the object placing plate. Wherein, the area of the object placing plate distributed by the single contact switch is equal to the area of the surface of the object placing plate divided by the number of the contact switches. It can be understood that the more contact switches are arranged on the object placing plate, the more accurate the sum of the calculated bottom areas is. Then, the arithmetic unit judges whether the quotient of the base area sum and the base area of the single target article is an integer: when the quotient is an integer, determining the quotient as the number of the target articles placed on the storage plate; and when the quotient is not an integer, determining that the object except the target object is placed on the object placing plate. Therefore, the judgment of the type of the articles on the object placing plate and the calculation of the number of the target articles are realized.
Fig. 5 is a schematic structural diagram of an apparatus for acquiring the quantity of an article according to a second embodiment of the present invention. As shown in fig. 5, the apparatus for acquiring the number of items according to the present embodiment may be mounted on the shelf structure 20, and includes a storage plate 10, a pressure sensor 30 mounted below the storage plate 10 and attached to the storage plate 10, and a bottom plate 40 for supporting the pressure sensor 30. The object placing plate 10 and the object placing plate in the first embodiment are designed in the same manner, a plurality of contact switches are uniformly arranged, a circuit where the contact switches are located can be shown in fig. 3 and 4, the electric signal measuring unit can be an ammeter, a voltmeter or an ohmmeter, and other parts are not described again. The pressure sensor 30 senses the pressure of the object placed by the transfer of the shelf board 10, and it can be understood that it needs to be zeroed and calibrated before use.
When the device of the embodiment is used, whether the articles are stacked or not is not limited, namely, the articles placed on the storage plate can be stacked or not. In practical application, the electric signal measuring unit acquires electric signal measuring data in the circuit, and the pressure sensor acquires pressure data of a target object. After the arithmetic unit acquires the electric signal measurement data and the pressure data, when the electric signal measurement data acquired by the electric signal measurement unit at present is judged to be the predetermined fixed value data or the pressure data acquired by the pressure sensor at present is judged to be zero, it is determined that no article is placed on the object placing plate. As in the first embodiment, the above-mentioned fixed value data is data collected by the electric signal measuring unit when no contact switch is closed in the circuit (the following description will take as an example a case where the contact switches are all in an open state when no article is placed on the placing board, in which case the contact switch that is currently in a closed state is the contact switch that has changed its switching state).
And when the operation unit judges that the electric signal measurement data currently acquired by the electric signal measurement unit is not the fixed value data and the pressure data currently acquired by the pressure sensor is not zero, the operation unit determines the number of the contact switches currently in the closed state according to the pre-established corresponding relation between the number of the contact switches in the closed state and the electric signal measurement data currently acquired by the electric signal measurement unit. And then multiplying the determined number of the contact switches by the area of the object placing plate allocated by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target objects on the object placing plate, dividing the sum of the bottom areas by the bottom area of the single target object to obtain a first quotient, and dividing the pressure data currently acquired by the pressure sensor by the gravity of the single target object to obtain a second quotient. It is understood that the steps of calculating the first quotient value and calculating the second quotient value may be performed sequentially in any order, or may be performed simultaneously.
And then, if the operation unit judges that the first quotient value and the second quotient value are both integers, the operation unit determines the second quotient value as the number of the target articles placed on the object placing plate. And if the first quotient or the second quotient is judged not to be an integer, determining that the object different from the target object is placed on the object placing plate. Therefore, the judgment of the type of the articles on the storage plate and the calculation of the number of the target articles are realized. Compared with the device in the first embodiment, the device in the embodiment can be applied to the situation that articles are stacked; compared with the device which separately adopts the pressure sensor to acquire the quantity of the articles, the device of the embodiment can accurately judge when other articles and the target article have the same weight and different bottom areas, so that the device has a wider application range.
In summary, in the technical solution of the embodiment of the present invention, two devices for automatically acquiring the quantity of the articles are provided:
the first device is suitable for the situation that articles are not stacked, and in the device, a plurality of contact switches are uniformly arranged on an object placing plate, and each contact switch is uniformly connected in a preset circuit. When the target object is placed on the object placing plate, the contact switch pressed by the object placing plate changes the switch state, and the electric signal measuring unit in the circuit acquires electric signal measuring data. And comparing the acquired electrical signal measurement data with the pre-established corresponding relation between the number of the contact switches in the closed state and the electrical signal measurement data to determine the number of the contact switches pressed by the target article, multiplying the number of the contact switches by the area allocated by a single contact switch to obtain the sum of the bottom areas of the target article, and dividing the sum of the bottom areas by the bottom area of the single target article to finally determine the number of the target article. Through the process, the automatic acquisition of the quantity of the articles is realized, the efficiency is high, and the error is not easy to occur. Meanwhile, whether other articles except the target article exist on the object placing plate can be judged by judging whether a first quotient obtained by dividing the base area sum by the base area of the single target article is an integer or not.
The second device adds a pressure sensor and a bottom plate for supporting the pressure sensor on the basis of the first device, thereby adding a way for calculating the quantity of the articles by using the pressure on the basis of the quantity of the articles acquired by the bottom area of the first device, and being suitable for various situations with article stacking and without article stacking. Specifically, in addition to obtaining the first quotient, the pressure data of the target object collected by the pressure sensor may be divided by the gravity of the single target object to obtain a second quotient, after which a determination is made: if the first quotient value and the second quotient value are both integers, taking the second quotient value as the target article quantity; if the first quotient value and the second quotient value have non-integer numbers, the object placing plate is considered to be placed with other objects. Compared with the method of calculating the quantity of the articles by using the pressure sensor alone, the device can be used in the scene that other articles and the target article have the same weight and different bottom areas.
Fig. 6 is a schematic diagram of the main steps of the method for acquiring the quantity of the article in the embodiment of the invention. As shown in fig. 6, the method for obtaining the quantity of the article according to the embodiment of the present invention uses the apparatus in the second embodiment, and specifically performs the following steps: (the following procedure corresponds to the case where each contact switch in the device is in an off state when no article is placed on the storage plate)
Step S601: and when the electric signal measurement data currently acquired by the electric signal measurement unit is judged to be the predetermined fixed value data or the pressure data currently acquired by the pressure sensor is zero, determining that no article is placed on the object placing plate.
Step S602: and when the electric signal measurement data currently acquired by the electric signal measurement unit is judged not to be the fixed value data and the pressure data currently acquired by the pressure sensor is judged not to be zero, determining the number of the contact switches currently in the closed state according to the pre-established corresponding relation between the number of the contact switches in the closed state and the electric signal measurement data currently acquired by the electric signal measurement unit.
Step S603: multiplying the determined number of the contact switches by the area of the object placing plate distributed by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target objects on the object placing plate, and dividing the sum of the bottom areas by the bottom area of the single target object to obtain a first quotient; and dividing the pressure data currently acquired by the pressure sensor by the gravity of the single target object to obtain a second quotient.
Step S604: when the first quotient value and the second quotient value are judged to be integers, the second quotient value is determined as the number of the target articles placed on the object placing plate; and when the first quotient value or the second quotient value is judged not to be an integer, determining that the object different from the target object is placed on the object placing plate.
It is to be understood that the above description does not set any limit to the execution order of the steps S601 and S602 and the execution order of the first quotient calculation and the second quotient calculation.
Accordingly, the specific implementation steps for obtaining the quantity of the article by using the device in the first embodiment are as follows: (the following procedure corresponds to the case where each contact switch in the device is in an off state when no article is placed on the storage plate)
1. When the electric signal measurement data currently acquired by the electric signal measurement unit is judged to be the predetermined fixed value data, it is determined that no article is placed on the article placing plate.
2. And when the electric signal measurement data currently acquired by the electric signal measurement unit is judged not to be the predetermined fixed value data, determining the number of the contact switches currently in the closed state according to the pre-established corresponding relation between the number of the contact switches currently in the closed state and the electric signal measurement data currently acquired by the electric signal measurement unit.
3. And multiplying the determined number of the contact switches by the area of the object placing plate distributed by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target articles on the object placing plate, and judging whether the quotient of the sum of the bottom areas and the bottom area of the single target article is an integer.
4. When the quotient is an integer, determining the quotient as the number of the target articles placed on the storage plate; and when the quotient is not an integer, determining that the object except the target object is placed on the object placing plate.
It should be noted that, for the convenience of description, the foregoing method embodiments are described as a series of acts, but those skilled in the art will appreciate that the present invention is not limited by the order of acts described, and that some steps may in fact be performed in other orders or concurrently. Moreover, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no acts or modules are necessarily required to implement the invention. It is understood that the device and method for acquiring the quantity of the items according to the embodiments of the present invention can be applied to any scenario where the quantity of the items needs to be determined, such as item counting in a warehouse.
Fig. 7 illustrates an exemplary system architecture 700 to which the method of obtaining an item quantity of an embodiment of the present invention may be applied.
As shown in fig. 7, the system architecture 700 may include terminal devices 701, 702, 703, a network 704 and a server 705 (this architecture is merely an example, and the components included in a specific architecture may be adjusted according to specific application). The network 704 serves to provide a medium for communication links between the terminal devices 701, 702, 703 and the server 705. Network 704 may include various connection types, such as wired, wireless communication links, or fiber optic cables, to name a few.
A user may use the terminal devices 701, 702, 703 to interact with a server 705 over a network 704, to receive or send messages or the like. Various client applications, such as an arithmetic type application (for example only), may be installed on the terminal devices 701, 702, 703.
The terminal devices 701, 702, 703 may be various electronic devices having a display screen and supporting web browsing, including but not limited to smart phones, tablet computers, laptop portable computers, desktop computers, and the like.
The server 705 may be a server providing various services, such as a background server (for example only) providing support for operation-type applications operated by users using the terminal devices 701, 702, 703. The backend server may process the received operation request and feed back the processing result (e.g., the calculated number of the target item — just an example) to the terminal devices 701, 702, 703.
It is noted that the method for obtaining the quantity of the item provided by the embodiment of the present invention is generally executed by the server 705.
It should be understood that the number of terminal devices, networks, and servers in fig. 7 is merely illustrative. There may be any number of terminal devices, networks, and servers, as desired for implementation.
The invention also provides the electronic equipment. The electronic device of the embodiment of the invention comprises: one or more processors; the storage device is used for storing one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors realize the method for acquiring the quantity of the article provided by the invention.
Referring now to FIG. 8, shown is a block diagram of a computer system 800 suitable for use in implementing an electronic device of an embodiment of the present invention. The electronic device shown in fig. 8 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present invention.
As shown in fig. 8, the computer system 800 includes a Central Processing Unit (CPU)801 that can perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)802 or a program loaded from a storage section 808 into a Random Access Memory (RAM) 803. In the RAM803, various programs and data necessary for the operation of the computer system 800 are also stored. The CPU801, ROM 802, and RAM803 are connected to each other via a bus 804. An input/output (I/O) interface 805 is also connected to bus 804.
The following components are connected to the I/O interface 805: an input portion 806 including a keyboard, a mouse, and the like; an output section 807 including a signal such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 808 including a hard disk and the like; and a communication section 809 including a network interface card such as a LAN card, a modem, or the like. The communication section 809 performs communication processing via a network such as the internet. A drive 810 is also connected to the I/O interface 805 as necessary. A removable medium 811 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 810 as necessary, so that a computer program read out therefrom is mounted into the storage section 808 as necessary.
In particular, the processes described in the main step diagrams above may be implemented as computer software programs, according to embodiments of the present disclosure. For example, embodiments of the invention include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated in the main step diagram. In the above-described embodiment, the computer program can be downloaded and installed from a network via the communication section 809 and/or installed from the removable medium 811. The computer program, when executed by the central processing unit 801, performs the above-described functions defined in the system of the present invention.
It should be noted that the computer readable medium shown in the present invention can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present invention may be implemented by software or hardware. The described units may also be located in the processor.
As another aspect, the present invention also provides a computer-readable medium that may be contained in the apparatus described in the above embodiments; or may be separate and not incorporated into the device. The computer readable medium carries one or more programs which, when executed by the apparatus, cause the apparatus to perform steps comprising: when the electric signal measurement data currently acquired by the electric signal measurement unit is judged to be predetermined fixed value data or the pressure data currently acquired by the pressure sensor is judged to be zero, determining that no article is placed on the object placing plate; when the electric signal measurement data currently acquired by the electric signal measurement unit is judged not to be the fixed value data and the pressure data currently acquired by the pressure sensor is judged not to be zero: determining the number of the contact switches in the closed state at present according to the pre-established corresponding relation between the number of the contact switches in the closed state and the electric signal measurement data acquired by the electric signal measurement unit at present; multiplying the determined number of the contact switches by the area of the object placing plate distributed by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target objects on the object placing plate, and dividing the sum of the bottom areas by the bottom area of the single target object to obtain a first quotient; dividing the pressure data acquired by the pressure sensor by the gravity of the single target object to obtain a second quotient; when the first quotient value and the second quotient value are judged to be integers, the second quotient value is determined as the number of the target articles placed on the object placing plate; and when the first quotient value or the second quotient value is judged not to be an integer, determining that the object different from the target object is placed on the object placing plate.
The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. An apparatus for obtaining a quantity of an item, comprising: the object placing plate is uniformly provided with a plurality of contact switches; wherein the content of the first and second substances,
the plurality of contact switches are uniformly connected in parallel or in series in a preset circuit containing an electric signal measuring unit and are in the same switch state when no article is placed on the object placing plate; each contact switch changes the switch state when being pressed by the articles placed on the article placing plate;
when at least one target object is placed on the object placing plate in a non-overlapping manner, the electric signal measuring unit obtains electric signal measuring data, and the electric signal measuring data are used for determining the number of the contact switches with the switch states changed so as to obtain the number of the target objects.
2. The apparatus of claim 1, wherein the electrical signal measurement unit is an ammeter, the circuit further comprising: the power supply and equivalent resistors with the same number as the contact switches arranged on the object placing plate; wherein the content of the first and second substances,
the ammeter is connected in series with a main circuit of the circuit;
each contact switch is connected with an equivalent resistor in series to form a switch assembly; and
for each switch assembly, one end of the switch assembly is connected with one pole of the power supply, and the other end of the switch assembly is connected with one end of the ammeter.
3. The apparatus of claim 1, wherein each contact switch is in an off state when no item is placed on the shelf; and, the apparatus further comprises an arithmetic unit for:
determining the number of the contact switches in the closed state at present according to the pre-established corresponding relation between the number of the contact switches in the closed state and the electric signal measurement data acquired by the electric signal measurement unit at present;
multiplying the determined number of the contact switches by the area of the object placing plate distributed by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target objects on the object placing plate, and judging whether the quotient of the sum of the bottom areas and the bottom area of the single target object is an integer;
when the quotient is an integer, determining the quotient as the number of the target items placed on the storage plate; and when the quotient is not an integer, determining that the object except the target object is placed on the object placing plate.
4. The apparatus of claim 2, wherein each contact switch is in an off state when no item is placed on the shelf; and, the apparatus further comprises an arithmetic unit for:
and when the electric signal measurement data acquired by the ammeter is judged to be zero, determining that no article is placed on the object placing plate.
5. The apparatus of claim 1 or 3,
the electric signal measuring unit includes: an ammeter, voltmeter, or ohmmeter;
the electrical signal measurement data comprises: current data, voltage data, or resistance data;
the contact switch includes: a tact switch and/or a membrane switch.
6. An apparatus for obtaining a quantity of an item, comprising: the device comprises a storage plate, a pressure sensor and a bottom plate, wherein the storage plate is uniformly provided with a plurality of contact switches; wherein the content of the first and second substances,
the plurality of contact switches are uniformly connected in parallel or in series in a preset circuit containing an electric signal measuring unit and are in the same switch state when no article is placed on the object placing plate; each contact switch changes the switch state when being pressed by the articles placed on the article placing plate;
when at least one target object is placed on the object placing plate, the electric signal measuring unit obtains electric signal measuring data, and the pressure sensor obtains pressure data of the target object; wherein the electrical signal measurement data and the pressure data are used in conjunction with one another to determine a target item quantity.
7. The apparatus of claim 6, wherein the electrical signal measurement unit is an ammeter, the circuit further comprising: the power supply and equivalent resistors with the same number as the contact switches arranged on the object placing plate; wherein the content of the first and second substances,
the ammeter is connected in series with a main circuit of the circuit;
each contact switch is connected with an equivalent resistor in series to form a switch assembly; and
for each switch assembly, one end of the switch assembly is connected with one pole of the power supply, and the other end of the switch assembly is connected with one end of the ammeter.
8. The apparatus of claim 6, wherein each contact switch is in an off state when no item is placed on the shelf; and, the apparatus further comprises an arithmetic unit for:
determining the number of the contact switches in the closed state at present according to the pre-established corresponding relation between the number of the contact switches in the closed state and the electric signal measurement data acquired by the electric signal measurement unit at present;
multiplying the determined number of the contact switches by the area of the object placing plate distributed by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target objects on the object placing plate, and dividing the sum of the bottom areas by the bottom area of the single target object to obtain a first quotient; dividing the pressure data currently acquired by the pressure sensor by the gravity of a single target object to obtain a second quotient; and
when the first quotient value and the second quotient value are judged to be integers, the second quotient value is determined as the number of the target articles placed on the object placing plate; and when the first quotient value or the second quotient value is judged not to be an integer, determining that the object plate is provided with objects except the target object.
9. The apparatus of claim 7, wherein each contact switch is in an open state when no item is placed on the shelf; and, the apparatus further comprises an arithmetic unit for:
and when the electric signal measurement data acquired by the ammeter and the pressure data acquired by the pressure sensor are both judged to be zero, determining that no article is placed on the object placing plate.
10. The apparatus according to claim 6 or 8,
the electric signal measuring unit includes: an ammeter, voltmeter, or ohmmeter;
the electrical signal measurement data comprises: current data, voltage data, or resistance data;
the contact switch includes: a tact switch and/or a membrane switch.
11. A method of obtaining the quantity of an item using the apparatus of claim 6, 7 or 10; each contact switch in the device is in a disconnected state when no article is placed on the article placing plate; characterized in that the method comprises:
when the electric signal measurement data currently acquired by the electric signal measurement unit is judged to be predetermined fixed value data or the pressure data currently acquired by the pressure sensor is judged to be zero, determining that no article is placed on the object placing plate;
when the electric signal measurement data currently acquired by the electric signal measurement unit is judged not to be the fixed value data and the pressure data currently acquired by the pressure sensor is judged not to be zero:
determining the number of the contact switches in the closed state at present according to the pre-established corresponding relation between the number of the contact switches in the closed state and the electric signal measurement data acquired by the electric signal measurement unit at present;
multiplying the determined number of the contact switches by the area of the object placing plate distributed by the single contact switch, which is known in advance, to obtain the sum of the bottom areas of the target objects on the object placing plate, and dividing the sum of the bottom areas by the bottom area of the single target object to obtain a first quotient; dividing the pressure data currently acquired by the pressure sensor by the gravity of a single target object to obtain a second quotient; and
when the first quotient value and the second quotient value are judged to be integers, the second quotient value is determined as the number of the target articles placed on the object placing plate; and when the first quotient value or the second quotient value is judged not to be an integer, determining that the object different from the target object is placed on the object placing plate.
12. An electronic device, comprising:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the method as recited in claim 11.
13. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method as claimed in claim 11.
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| CN113955284A (en) * | 2021-10-28 | 2022-01-21 | 广东电网有限责任公司 | Measurement material turnover case and bearing plate car |
| CN114882640A (en) * | 2022-06-16 | 2022-08-09 | 广东便捷神科技股份有限公司 | Pushing position identification system based on pushing vending machine |
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