Anti-cheating electronic scale with high anti-interference performance

Abstract

The utility model relates to the field of electronic scales, in particular to an anti-cheating electronic scale with high anti-interference performance, which comprises an electronic scale main body and a weighing system arranged in the electronic scale main body, the weighing system comprises a weighing sensor, a weighing module mainboard, a microprocessor, a display module and a keyboard group; the anti-cheating module is constructed as a mechanical button; the electronic scale main body comprises an upper shell and a lower shell, the mechanical button is clamped between the upper shell and the lower shell, and the mechanical button is fixedly connected to one of the upper shell and the lower shell. When the upper shell and the lower shell are in a covering state, a key of the mechanical button abuts against the other one of the upper shell and the lower shell, and the mechanical button is in a non-activated state; and when the upper shell and the lower shell are in a separated state, the key of the mechanical button bounces and is in an activated state, and the anti-cheating module blocks the weighing module mainboard from transmitting weighing information. According to the scheme, the anti-interference performance is high, the tampering possibility is reduced, and the situation that the electronic scale is mistakenly tampered and locked is eradicated.

Description

Technical Field

[0001] The utility model relates to the field of electronic scales, in particular to an anti-cheating electronic scale with high anti-interference performance. Background Art

[0002] Electronic price calculating scales are electronic weighing instruments with a pricing function. They are widely used as important measuring instruments for people's livelihood in the market transactions of fruits, vegetables, meat, poultry, eggs, aquatic products and seafood. In the period of rapid social and economic development, the problem of electronic scale cheating needs to be solved urgently in the process of continuous improvement of the social credit system. The majority of measurement personnel have also conducted extensive technical research on anti-cheating, and the relevant technical specifications also have clear clauses and requirements. However, due to the great difficulty of supervision, cheating still continues. The traditional way of investigating and punishing cheating on electronic price calculating scales is generally to use standard weights to weigh on fair scales and merchants' electronic price calculating scales respectively, and compare the weighing results to determine whether there is cheating. Anti-cheating methods and means are relatively simple and lack real-time performance. It is difficult for consumers to obtain evidence when they find that they have been cheated. It is difficult for regulatory authorities to form an effective supervision model and it is difficult to improve management efficiency.

[0003] On this basis, the Chinese invention patent publication with publication number "CN118149953A" records a management method, system, electronic device and storage medium for an electronic scale, wherein the management system includes: a terminal device, a data platform, and an anti-cheating module; the anti-cheating module is used to pair and connect with the terminal device, and block the electronic scale from displaying weighing information when it is detected that the electronic scale is disassembled; the terminal device is used to obtain the user ID and feedback information, and is paired and connected with the anti-cheating module to obtain the electronic scale ID and weighing information of the electronic scale; the data platform is used to receive the user ID, electronic scale ID and feedback information sent by the terminal device, and output traceability information to the terminal device based on the electronic scale ID; the user type is determined based on the user ID, the user type includes a first type, and when the user type is the first type, the authorization information is output, and the anti-cheating module stops monitoring the electronic scale according to the authorization information; and the feedback information is stored in the traceability information.

[0004] When the above scheme is implemented, the anti-cheating module in the above scheme adopts a magnetic induction sensor that monitors the electronic scale, uses electromagnetic technology, and uses magnetic parts and security monitoring circuits to monitor illegal disassembly, wherein the magnetic induction sensor is installed inside the electronic scale to monitor the relative displacement between the magnetic parts and the monitoring circuit. When the displacement reaches a preset value, it is triggered and sends a control signal to block the transmission of weighing information to the electronic scale mainboard.

[0005] However, the magnetic induction sensor is easily interfered with, which may lead to the possibility of tampering; or it may be mistaken for tampering with the electronic scale and locked. Summary of the invention

[0006] In order to solve the above problems, the purpose of the utility model is to provide an anti-cheating electronic scale with high anti-interference performance, which uses mechanical buttons instead of magnetic induction sensors to detect whether the upper shell and the lower shell are separated. It has strong anti-interference performance, reduces the possibility of tampering, and eliminates the situation where the electronic scale is mistakenly considered to be tampered with and locked.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0008] An anti-cheating electronic scale with high anti-interference performance comprises an electronic scale body and a weighing system installed in the electronic scale body; the weighing system comprises a weighing sensor, a weighing module mainboard, a microprocessor, a display module and a keyboard group; the weighing module mainboard is respectively connected to the weighing sensor and the microprocessor, and the microprocessor is respectively connected to the display module and the keyboard group; it is characterized in that: the weighing system also comprises an anti-cheating module connected to the weighing module mainboard, and the anti-cheating module is constructed as a mechanical button; the electronic scale body comprises an upper shell and a lower shell, the mechanical button is clamped between the upper shell and the lower shell, and the mechanical button is fixed to one of the upper shell and the lower shell; when the upper shell and the lower shell are covered, the key of the mechanical button abuts against the other of the upper shell and the lower shell, and the mechanical button is in an inactive state; when the upper shell and the lower shell are separated, the key of the mechanical button pops up and is in an activated state, and the anti-cheating module blocks the weighing module mainboard from transmitting weighing information.

[0009] The utility model adopts the above technical scheme, which relates to an anti-cheating electronic scale with high anti-interference performance. The weighing sensor in the anti-cheating electronic scale is used to convert the weighing weight on the scale plate into an electronic signal, and converts it into a digital signal through a weighing module mainboard and transmits it to a microprocessor. The microprocessor communicates with a display driver to control the display content and is connected to a keypad to scan keys.

[0010] On this basis, the scheme sets the anti-cheating module used to detect whether the upper shell and the lower shell of the electronic scale body are opened as a mechanical button. The mechanical button is sandwiched between the upper shell and the lower shell and fixed to one of the upper shell and the lower shell, and its key is supported by the other of the upper shell and the lower shell. When the upper shell and the lower shell are separated, the key of the mechanical button is activated, and the anti-cheating module inputs a signal to the weighing module mainboard, so that the weighing module mainboard interrupts the transmission of weighing information.

[0011] Through the above scheme, mechanical buttons are used instead of magnetic induction sensors to detect whether the upper shell and the lower shell are separated, which has strong anti-interference ability, reduces the possibility of tampering, and prevents the situation where the electronic scale is mistakenly considered to be tampered with and locked.

[0012] In a further solution, a circuit board connected to the mechanical button is constructed, and the circuit board is fixed to one of the upper shell and the lower shell. In this solution, the circuit board on the mechanical button is used as a part for connecting the weighing module mainboard on the one hand, and the mechanical button can be fixed by the above solution on the other hand.

[0013] In a specific solution, a mounting hole is constructed on the circuit board of the mechanical button, and a mounting seat is constructed on the upper shell or the lower shell; a screw-fixing component passes through the mounting hole to fix the mechanical button and its circuit board to the mounting seat of the upper shell or the lower shell.

[0014] Preferably, a pressing bracket for pressing against a key of the mechanical button is constructed on the other of the upper shell and the lower shell; the pressing bracket includes a pressing plane in contact with the key. The pressing plane on the pressing bracket can ensure uniform force on the key.

[0015] In a further solution, the mechanical button is arranged on the inner side of the side edges of the upper shell and the lower shell.

[0016] Specifically, the circuit board is fixed to the lower shell, and the two side edges of the upper shell are constructed with side walls extending downward, and the lower end faces of the side walls are attached to the edge of the lower shell or the flange of the edge of the lower shell; the side walls extend at least to the bottom of the key stroke of the mechanical button. In this scheme, the mechanical button is set on the inner side of the side wall of the upper shell; and the side wall extends at least to the bottom of the key stroke of the mechanical button, so that when the upper shell and the lower shell are separated to the point where the mechanical button can be observed from the side, the mechanical button is already in a triggered state, so that the situation where an external component is inserted into the mechanical button during the separation of the upper shell and the lower shell can be avoided.

[0017] Preferably, the anti-cheating module or weighing module mainboard is connected to a backup power supply to prevent unscrupulous merchants from cutting off the power supply of the electronic pricing scale to render the anti-cheating module's monitoring of the electronic scale ineffective, thereby illegally disassembling and modifying the electronic scale.

[0018] In a further solution, the electronic scale body is built with an upper frame and a lower frame, and the weighing sensor is sandwiched between the upper frame and the lower frame; a through hole is constructed on the upper end surface of the upper shell, and a weighing platform is provided on the upper shell, and the weighing platform passes through the through hole and is supported on the upper frame. When weighing, an object is placed on the weighing platform, and the weight of the object is transmitted to the weighing sensor through the weighing platform and the upper frame, and the weighing sensor converts the weighing weight into an electronic signal.

[0019] In a specific implementation scheme, the upper frame is an I-shaped frame, and through holes are constructed on the upper shell above the four end corners of the I-shaped frame, and the weighing platform passes through the through holes and is supported on the four end corners of the upper frame.

[0020] Preferably, at least one side wall of the lower frame is constructed with a folded edge, and the folded edge of the lower frame is pressed against the lower shell and then fixed to the lower shell by a screw fixing component. The folded edge on the lower frame can achieve positioning, thereby achieving rapid positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic diagram of the structure of the anti-cheating electronic scale involved in the invention.

[0022] Figure 2 Schematic diagram of the upper and lower shells of an anti-cheating electronic scale in the separated state.

[0023] Figure 3 Schematic diagram of the status of the electronic scale with the upper shell hidden to prevent cheating.

[0024] Figure 4 Schematic diagram of the structure of a mechanical button.

[0025] Figure 5 Schematic diagram of the connection of the weighing system inside the electronic scale to prevent cheating. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] like Figures 1 to 5 As shown, the present embodiment relates to an anti-cheating electronic scale with high anti-interference performance, including an electronic scale body 1, and a weighing system installed in the electronic scale body 1. The weighing system includes a weighing sensor 2, a weighing module mainboard 3, a microprocessor 4, a display module 5 and a keyboard group 6. The weighing module mainboard 3 is connected to the weighing sensor 2 and the microprocessor 4 respectively, and the microprocessor 4 is connected to the display module 5 and the keyboard group 6 respectively. As shown in the figure, a display driver module 51 and a plurality of display screens 52 connected to the display driver module 51 are provided on the display module. The display driver module 51 is connected to the display socket 41 in the microprocessor 4. In addition, the key interface 42 in the microprocessor 4 is connected to the keyboard group 6. The technical solution relates to an anti-cheating electronic scale with high anti-interference performance, in which the weighing sensor 2 in the anti-cheating electronic scale is used to convert the weighing weight on the scale plate into an electronic signal, and the weighing module mainboard 3 converts the digital signal into a digital signal and transmits it to the microprocessor 4, and the microprocessor 4 communicates with the display driver to control the display content and connects the keypad to scan the key.

[0032] As Figure 5Another alternative is to integrate the weighing module mainboard 3 and the microprocessor 4 on the same PCB board, share the same processor, and complete weighing processing, display and key processing. In contrast, the weighing module mainboard 3 and the microprocessor 4 are separately set up, the processor in the weighing module mainboard 3 is responsible for weighing processing, and the microprocessor 4 is responsible for reading the weighing information, display and key of the weighing module mainboard 3. In this way, the weighing module mainboard 3 and the microprocessor 4 are integrated together, which saves installation, PCB and wire materials, and components.

[0033] In a further embodiment, the weighing system further comprises an anti-cheating module 7 connected to the weighing module mainboard 3, and the anti-cheating module 7 is constructed as a mechanical button. The electronic scale main body 1 comprises an upper shell 11 and a lower shell 12, and the mechanical button is sandwiched between the upper shell 11 and the lower shell 12, and the mechanical button is fixed to one of the upper shell 11 and the lower shell 12. When the upper shell 11 and the lower shell 12 are in a closed state, the key 71 of the mechanical button abuts against the other of the upper shell 11 and the lower shell 12, and the mechanical button is in an inactive state. When the upper shell 11 and the lower shell 12 are separated, the key 71 of the mechanical button pops up and is in an activated state, and the anti-cheating module 7 blocks the weighing module mainboard 3 from transmitting weighing information. In this solution, the anti-cheating module 7 used to detect whether the upper shell 11 and the lower shell 12 of the electronic scale body 1 are opened is set as a mechanical button. The mechanical button is sandwiched between the upper shell 11 and the lower shell 12 and fixed to one of the upper shell 11 and the lower shell 12, and its key 71 is supported by the other of the upper shell 11 and the lower shell 12. When the upper shell 11 and the lower shell 12 are separated, the key 71 of the mechanical button pops up and is in an activated state, and the anti-cheating module 7 gives an input signal to the weighing module mainboard 3, so that the weighing module mainboard 3 interrupts the transmission of weighing information. Through the above solution, the mechanical key 71 is used instead of the magnetic induction sensor to detect whether the upper shell 11 and the lower shell 12 are separated, which has strong anti-interference performance, reduces the possibility of tampering, and prevents the situation of being mistakenly believed to be tampering with the electronic scale and locked.

[0034] In such Figures 2 to 4In the further scheme shown, the mechanical button is constructed with a circuit board 72 connected thereto, and the circuit board 72 is fixedly connected to one of the upper shell 11 and the lower shell 12. In the scheme here, the circuit board 72 on the mechanical button is used as a part for connecting the weighing module mainboard 3 on the one hand, and the mechanical button can be fixed by the above scheme on the other hand. In a specific scheme, a mounting hole is constructed on the circuit board 72 of the mechanical button, and a mounting seat is constructed on the upper shell 11 or the lower shell 12. The screw-fixing component passes through the mounting hole to fix the mechanical button and its circuit board 72 to the mounting seat of the upper shell 11 or the lower shell 12. Further, a pressing bracket for pressing against the key 71 of the mechanical button is constructed on the other of the upper shell 11 and the lower shell 12. The pressing bracket includes a pressing plane in contact with the key 71. The pressing plane on the pressing bracket can ensure that the force acting on the key 71 is uniform.

[0035] In a further embodiment, the mechanical buttons are arranged on the inner sides of the edges of both sides of the upper shell 11 and the lower shell 12 .

[0036] Specifically, the circuit board 72 is fixed to the lower shell 12, and the side edges of the upper shell 11 are constructed with side walls 13 extending downward, and the lower end faces of the side walls 13 are attached to the edge of the lower shell 12 or the flange 17 of the edge of the lower shell 12. The side walls 13 extend at least below the stroke of the key 71 of the mechanical button. In the scheme here, the mechanical button is arranged on the inner side of the side wall 13 of the upper shell 11. The side wall 13 extends at least below the stroke of the key 71 of the mechanical button, so that when the upper shell 11 and the lower shell 12 are separated to the point where the key 71 of the mechanical button can be observed from the side, the mechanical button is already in a triggered state, so that the situation where an external component is inserted into the mechanical button during the separation of the upper shell 11 and the lower shell 12 can be avoided.

[0037] Preferably, the anti-cheating module 7 or the weighing module mainboard 3 is connected to a backup power supply 8, so as to prevent unscrupulous merchants from cutting off the power supply of the electronic pricing scale to render the anti-cheating module 7 ineffective in monitoring the electronic scale, thereby illegally disassembling and modifying the electronic scale.

[0038] like Figure 3As shown, the electronic scale body 1 is built with an upper frame 14 and a lower frame 15, and the weighing sensor 2 is sandwiched between the upper frame 14 and the lower frame 15. A through hole 16 is constructed on the upper end surface of the upper shell 11, and a weighing platform is arranged on the upper shell 11, and the weighing platform passes through the through hole 16 and is supported on the upper frame 14. When weighing, the object is placed on the weighing platform, and the weight of the object is transmitted to the weighing sensor 2 through the weighing platform and the upper frame 14, and the weighing sensor 2 converts the weighing weight into an electronic signal. In a specific implementation scheme, the upper frame 14 is an I-shaped frame, and through holes 16 are constructed on the upper shell 11 above the four end corners of the I-shaped frame, and the weighing platform passes through the through hole 16 and is supported on the four end corners of the upper frame 14. In the figure, a folded edge 151 is constructed on at least one side wall 13 of the lower frame 15, and the folded edge 151 of the lower frame 15 is pressed against the lower shell 12 and fixed to the lower shell 12 through a screw-fixing component. The folded edge 151 on the lower frame 15 can achieve positioning, thereby achieving rapid positioning.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. An anti-cheating electronic scale with high anti-interference performance, comprising an electronic scale body (1), and a weighing system installed in the electronic scale body (1); the weighing system comprises a weighing sensor (2), a weighing module mainboard (3), a microprocessor (4), a display module (5) and a keyboard group (6); the weighing module mainboard (3) is respectively connected to the weighing sensor (2) and the microprocessor (4), and the microprocessor (4) is respectively connected to the display module (5) and the keyboard group (6); the characteristics are: The weighing system further comprises an anti-cheating module (7) connected to the weighing module mainboard (3), wherein the anti-cheating module (7) is constructed as a mechanical button; the electronic scale main body (1) comprises an upper shell (11) and a lower shell (12), the mechanical button is sandwiched between the upper shell (11) and the lower shell (12), and the mechanical button is fixedly connected to one of the upper shell (11) and the lower shell (12); when the upper shell (11) and the lower shell (12) are in a closed state, a key (71) of the mechanical button abuts against the other of the upper shell (11) and the lower shell (12), and the mechanical button is in an inactive state; when the upper shell (11) and the lower shell (12) are separated, the key (71) of the mechanical button pops up and is in an activated state, and the anti-cheating module (7) blocks the weighing module mainboard (3) from transmitting weighing information.

2. The anti-cheating electronic scale with high anti-interference performance according to claim 1, characterized in that: A circuit board (72) connected to the mechanical button is constructed on the mechanical button, and the circuit board (72) is fixedly connected to one of the upper shell (11) and the lower shell (12).

3. The anti-cheating electronic scale with high anti-interference performance according to claim 2 is characterized in that: A mounting hole is constructed on the circuit board (72) of the mechanical button, and a mounting seat is constructed on the upper shell (11) or the lower shell (12); a screw-fastening component passes through the mounting hole to fix the mechanical button and its circuit board (72) to the mounting seat of the upper shell (11) or the lower shell (12).

4. The anti-cheating electronic scale with high anti-interference performance according to claim 3 is characterized in that: A pressing bracket for pressing against a key (71) of a mechanical button is constructed on the other of the upper shell (11) and the lower shell (12); the pressing bracket comprises a pressing plane in contact with the key (71).

5. The anti-cheating electronic scale with high anti-interference performance according to any one of claims 2 to 4, characterized in that: The mechanical buttons are arranged on the inner sides of the edges of both sides of the upper shell (11) and the lower shell (12).

6. The anti-cheating electronic scale with high anti-interference performance according to claim 5, characterized in that: The circuit board (72) is fixedly connected to the lower shell (12); the two side edges of the upper shell (11) are formed with side walls (13) extending downwards; the lower end surfaces of the side walls (13) are fitted on the edge of the lower shell (12) or the flange (17) of the edge of the lower shell (12); the side walls (13) extend at least below the stroke of the key (71) of the mechanical button.

7. The anti-cheating electronic scale with high anti-interference performance according to claim 1, characterized in that: The anti-cheating module (7) or the weighing module mainboard (3) is connected to a backup power supply (8).

8. The anti-cheating electronic scale with high anti-interference performance according to claim 1, characterized in that: The electronic scale body (1) has an upper frame (14) and a lower frame (15) built in, and the weighing sensor (2) is sandwiched between the upper frame (14) and the lower frame (15); a through hole (16) is constructed on the upper end surface of the upper shell (11), and a weighing platform is arranged on the upper shell (11), and the weighing platform passes through the through hole (16) and is supported on the upper frame (14).

9. The anti-cheating electronic scale with high anti-interference performance according to claim 8, characterized in that: The upper frame (14) is an I-shaped frame, and through holes (16) are formed on the upper shell (11) above the four end corners of the I-shaped frame. The weighing platform passes through the through holes (16) and is supported on the four end corners of the upper frame (14).

10. The anti-cheating electronic scale with high anti-interference performance according to claim 8, characterized in that: A folded edge (151) is constructed on at least one side wall (13) of the lower frame (15); the folded edge (151) of the lower frame (15) is pressed against the lower shell (12) and then fixed to the lower shell (12) via a screw-fastening component.

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