CN219391082U - Portable commodity weighing device - Google Patents
Portable commodity weighing device Download PDFInfo
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- CN219391082U CN219391082U CN202222746766.7U CN202222746766U CN219391082U CN 219391082 U CN219391082 U CN 219391082U CN 202222746766 U CN202222746766 U CN 202222746766U CN 219391082 U CN219391082 U CN 219391082U
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Abstract
The utility model discloses a portable commodity weighing device, which comprises: the portable commodity weighing device is used for automatically calculating the actual net content of the corresponding commodity through the controller in combination with the weighing platform, comparing the actual net content with the designed net content to obtain a result, and outputting the result on-site paper.
Description
Technical Field
The utility model belongs to the technical field of metering and weighing, and particularly relates to a portable commodity weighing device.
Background
The detection of the net content of the commodity is an important component of quantitative package commodity metering supervision and management by the government. Is an important supervision means for whether the quantitative packaged goods produced and sold by enterprises meet the corresponding requirements of the net content. Typically by a governmental authorized legal metering technical agency professional. The current detection flow is as follows: sampling products, handwriting a sampling sheet, weighing and checking the net content of the commodity, filling in an original record, rechecking and reporting. The whole process is completed manually by a spot inspection personnel, the complete accuracy of the data cannot be ensured, and an inspection conclusion cannot be obtained on site in real time.
Therefore, in order to improve the working efficiency of quality inspection departments on spot checks of market products, ensure the correctness, timeliness and reliability of data, and lighten the labor intensity of first-line spot check workers, a device capable of automatically weighing and recording output results is needed.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, provides a portable commodity weighing device, and solves the problems that the whole process is completed manually by a spot inspection staff, the complete accuracy of data cannot be ensured, and a check conclusion cannot be obtained on site in real time.
In order to achieve the above object, the present utility model provides a portable commodity weighing apparatus comprising:
the weighing platform is used for obtaining actual gross weight information and actual net weight information of the commodity;
the scanner is used for obtaining commodity codes of the commodity and obtaining design gross weight information and design net weight information or design net content of the commodity according to the commodity codes;
the controller is electrically connected with the weighing platform and the scanner and is used for obtaining actual net content according to the actual gross weight information and the actual net weight information and comparing the actual net content with the designed net content;
and the printer is connected with the controller, is arranged at the periphery of the weighing platform and is used for outputting at least the commodity codes, the actual net content, the designed net content and the comparison result.
Optionally, the weighing platform includes:
the upper end of the upper part is detachably connected with a plurality of scales;
a lower portion, the lower portion gap being disposed below the upper portion;
and one end upper side of the sensor is connected with the upper part, and the other end lower side of the sensor is connected with the lower part.
Optionally, the sensor is a single point strain sensor.
Optionally, the sensor is bone-shaped and forms a Z-shaped structure with the upper portion and the lower portion.
Optionally, an upper support plate is disposed on two sides of the lower end of the upper portion, a lower support plate corresponding to the upper support plate is disposed on two sides of the upper end of the lower portion, and a gap between the upper support plate and the lower support plate is not smaller than the maximum deformation of the sensor.
Optionally, the scale pan is in an open box shape, and the upper ends of the upper portion and the lower portion are accommodated in the scale pan.
Optionally, the controller includes the shell, the inside of shell is provided with processing module and battery, one side of shell is provided with master switch, display screen, electricity meter and communication interface, the opposite side of shell is provided with charging plate and heat radiation structure.
Optionally, the processing module comprises an MCU micro-control unit, an ADC digital-to-analog conversion unit, a weighing signal processing unit, a power supply unit, a data storage unit, a CAN communication unit, a Profius-DP communication unit, an Ethernet communication unit, an RS485 communication unit, an RS232 communication unit, an analog quantity communication unit, a 12-channel output signal unit and an 8-channel input signal unit.
Optionally, the heat dissipation structure includes a temperature control fan, and the storage battery is a lithium battery.
Optionally, the portable electronic device further comprises a box body, wherein the box body comprises a cover part and a bottom part which are mutually hinged, the controller is arranged on the cover part, and the weighing platform, the scanner and the printer are arranged on the bottom part.
The utility model provides a portable commodity weighing device, which has the beneficial effects that:
1. the portable commodity weighing device automatically calculates the actual net content of the corresponding commodity through the controller and the weighing platform, compares the actual net content with the designed net content to obtain a result, and outputs the result on-site paper, so that the working efficiency of a quality inspection department on spot inspection of market products can be improved, the correctness, timeliness and reliability of data are ensured, and the labor intensity of first-line spot inspection workers is reduced.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.
Fig. 1 shows a schematic structural view of a portable commodity weighing apparatus according to one embodiment of the present utility model.
Fig. 2 shows a schematic diagram of a weighing platform structure of a portable commodity weighing apparatus according to an embodiment of the present utility model.
Reference numerals illustrate:
1. a weighing platform; 1.1, upper part; 1.2, lower part; 1.3, a sensor; 1.4, adjusting the gasket; 1.5, a scale pan; 2. a scanner; 3. a controller; 3.1, a main switch; 3.2, a display screen; 3.3, a communication interface; 4. a printer.
Detailed Description
Preferred embodiments of the present utility model will be described in more detail below. While the preferred embodiments of the present utility model are described below, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
As shown in fig. 1-2, a portable merchandise weighing device comprising:
the weighing platform 1 is used for obtaining actual gross weight information and actual net weight information of the commodity;
a scanner 2 for obtaining commodity codes of commodities and obtaining design gross weight information and design net weight information or design net content of the commodities according to the commodity codes;
the controller 3 is electrically connected with the weighing platform 1 and the scanner 2 and is used for obtaining the actual net content according to the actual gross weight information and the actual net weight information and comparing the actual net content with the designed net content;
and the printer 4 is connected with the controller 3 and arranged on the periphery of the weighing platform 1 and is used for outputting at least commodity codes, actual net contents, designed net contents and comparison results.
Specifically, the weight information of the commodity is obtained through the weighing platform 1, the commodity information is obtained through scanning the bar code, the two-dimensional code and the like of the commodity by the scanner 2, the controller 3 compares the related data to confirm whether the net content of the commodity is qualified or not, and meanwhile, the printer 4 outputs and displays all the obtained information and the judging result, so that the accuracy of the data is ensured, and the working efficiency is improved.
In this embodiment, the weighing platform 1 includes:
the upper part 1.1, the upper end of the upper part 1.1 is detachably connected with a plurality of scales 1.5;
a lower part 1.2, the lower part 1.2 being arranged below the upper part 1.1 with a gap;
and a sensor 1.3, wherein one end upper side of the sensor 1.3 is connected with the upper part 1.1, and the other end lower side is connected with the lower part 1.2.
Specifically, the upper part 1.1 bears commodity, the lower part 1.2 supports the commodity, the upper part 1.1 is pressed by the weight to be close to the lower part 1.2 to deform the sensor 1.3, and the weight is measured by the sensor 1.3.
Specifically, the adjusting gaskets 1.4 are arranged between the upper side of one end of the sensor 1.3 and the upper part 1.1 and between the lower side of the other end of the sensor and the lower part 1.2, so that the sensor is convenient to adjust and install, and the sensor 1.3 can be suspended and deformed conveniently.
In the present embodiment, the sensor 1.3 is a single-point strain sensor 1.3.
Specifically, the upper part 1.1 and the lower part 1.2 adopt a sheet metal bending process, so that the design is simplified while the strength is ensured. The material is stainless steel. In order to meet the actual requirement of commodity spot check work, 50kg of sensor 1.3 range is selected, and the design size of the table top is 30X40cm. The printer 4 is arranged along the length direction of the weighing platform 1, so that the notification use requirement of the printer A4 is met.
In this embodiment, the sensor 1.3 is bone-shaped and forms a Z-shaped structure with the upper part 1.1 and the lower part 1.2.
In this embodiment, the two sides of the lower end of the upper portion 1.1 are provided with an upper support plate, the two sides of the upper end of the lower portion 1.2 are provided with a lower support plate corresponding to the upper support plate, and the gap between the upper support plate and the lower support plate is not smaller than the maximum deformation of the sensor 1.3.
Specifically, when the measurement reaches the maximum value, the upper supporting plate and the lower supporting plate are in abutting contact, the deformation quantity of the sensor 1.3 is met through the gap between the upper supporting plate and the lower supporting plate, and meanwhile the overweight damage sensor 1.3 is prevented from being measured.
In this embodiment, the scale pan 1.5 has an open box shape, and the upper ends of the upper portion 1.1 and the lower portion 1.2 are accommodated in the scale pan 1.5.
Specifically, the inner structure of the weighing platform 1 is protected and covered by the open box-shaped scale pan 1.5, so that the safety is improved, and meanwhile, the shell design is saved.
In this embodiment, the controller 3 includes a housing, a processing module and a battery are provided inside the housing, one side of the housing is provided with a main switch 3.1, a display screen 3.2, an electricity meter and a communication interface 3.3, and the other side of the housing is provided with a charging plate and a heat dissipation structure.
Specifically, the processing module converts the measurement result of the weighing platform 1 and the commodity information obtained by the scanner 2 into unified format data for corresponding calculation and comparison, simultaneously, the data and the defect judgment result are uniformly transmitted to the printer for output, the display screen 3.2 is used for displaying weighing data in real time, the remaining capacity of the electric meter display device is used for providing electric energy through the charging plate and the storage battery, and meanwhile, the communication interface 3.3 is provided with a plurality of types for information transmission of different data formats.
In this embodiment, the processing module includes an MCU micro-control unit, an ADC digital-to-analog conversion unit, a weighing signal processing unit, a power supply unit, a data storage unit, a CAN communication unit, a Profius-DP communication unit, an ethernet communication unit, an RS485 communication unit, an RS232 communication unit, an analog communication unit, a 12-way output signal unit, and an 8-way input signal unit.
Specifically, the MCU selects an ARM chip of a 32-bit ARM7TDMI-S kernel; a 512KB flash memory space and a 32KB SRAM are built in. The highest operating speed may be up to 72MHz. The function interfaces are rich. The data storage is divided into two parts, namely an FRAM ferroelectric memory with an I2C interface is selected and relevant function setting parameters are stored;
the weighing signal processing unit adopts a multichannel delta-sigma analog/digital converter with extremely low noise, adopts a charge balance technology and a programmable gain chopper stabilized measuring amplifier with extremely low noise, can obtain an output result with the resolution of up to 24 bits, has high precision and wide dynamic characteristics, and can set the amplification factor from 1 to 32 (increase by 2 times of step size), thereby greatly improving the dynamic characteristics of the system. The multistage programmable digital filter enables the data output rate to be selectable, ranging from 7.5Hz to 3.84kHz. To facilitate connection to peripheral devices. The A/D converter has a flexible and simple synchronous serial interface, which allows converted data to be output in serial form, which is compatible with SPI, microwire.
The weighing signal processing unit supports 6-wire and 4-wire weighing sensors 1.3.
The display unit adopts an SPI interface, and can support the display of the LED nixie tube.
The whole system can be externally connected with a 24V power supply, and is converted into 3.3V and 5V through a power supply unit, so that the system can be used by corresponding parts of the system. The weighing data analog-to-digital conversion part uses a separate power conversion chip. Up to 6 load cells 1.3 can be supported.
An RS485 communication unit; an RS232 communication unit; the weigh display controller 3 may be enabled to support the MODBUS-RTU bus protocol. Thereby realizing equipment networking and remote control.
In this embodiment, the heat dissipation structure includes a temperature control fan, and the storage battery is a lithium battery.
Specifically, the whole system selects a lithium battery as a power supply, and when alternating current is inserted, the battery is charged through the charging plate, and a protection chip is arranged in a battery pack, so that the battery can be effectively prevented from being overcharged and overdischarged. The battery pack is also connected with a coulometer, so that the residual electric quantity of the battery can be displayed in real time. The user is reminded to charge in time.
In order to solve the heat dissipation problem of the industrial personal computer during operation, a heat dissipation hole is designed on the mechanism, a temperature control fan is designed on the electrical system, and when the temperature in the case reaches a certain value, the fan is automatically started.
In this embodiment, the apparatus further includes a case including a cover portion and a bottom portion hinged to each other, the controller 3 being provided on the cover portion, and the weighing table 1, the scanner 2, and the printer 4 being provided on the bottom portion.
Specifically, the whole system equipment mechanism is divided into two parts, wherein the upper part is mainly composed of a weighing instrument, a lithium battery bin, an electric quantity meter, a temperature control fan and a charging plate. The panel is also provided with an RS232 interface, an RS485 interface, an RJ45 network port, a USB interface and a WIFI antenna. The lower half is mainly a weighing platform, a wireless scanning gun and a wireless printer 4.
The design of the weighing platform and the sensor 1.3 select the leading brand in the industry, the structural design is simple, the stainless steel material is selected, and the actual use requirement is considered. The limit protection design ensures that the sensor 1.3 is not crushed in the use process.
The weighing instrument or the weight-calling acquisition card is designed to prevent the weight from being taken by a western chip card neck, and is designed by adopting domestic brands, and comprises an MCU (micro control unit), an ADC (analog to digital conversion) chip, an RS232 and RS485 communication chip, a display driving chip and the like. Through actual evaluation, the functional index and the electromagnetic compatibility index of the chip are not inferior to the level of foreign products of the same type, and the chip can be completely used.
The Modbus RTU communication protocol is selected for the transmission of weighing data, is an open serial protocol, and is widely applied to the current industrial monitoring equipment. The protocol uses an RS-232 or RS-485 serial interface for communication and is supported by almost all commercial SCADA, HMI, OPC servers and data acquisition software programs on the market. Thus, modbus-compatible devices are easily integrated into new or existing monitoring applications. The Modbus RTU protocol uses formatted messages to communicate between a master and a slave. The message is initiated by the system Master and sent to the Slave device. The secondary station then responds with the requested data or acknowledges that it performed the requested function. All messages to and from the primary station contain a two byte (16 bit) CRC (cyclic redundancy check) checksum value for error checking. If an invalid request is transmitted to the Modbus slave, a one byte (8 bit) error code value is returned, indicating the cause of the request error. The reliability of communication is ensured by a one-to-one mode.
The battery selects a lithium battery pack, a plurality of standard 18650 battery cells are selected in the battery pack, and the battery pack is manufactured in a serial-parallel mode to achieve the required voltage and battery capacity. The battery protection board is arranged in the battery protection board, so that the functions of overcharge, overdischarge, overcurrent and short-circuit protection are achieved, and the use safety is effectively improved. The charging circuit is also a charging chip special for the lithium battery which is selected as the main stream. The whole charging curve is ensured to meet the characteristic requirement of the lithium battery, and the service life of the battery is effectively prolonged.
The design, architecture, interface and database of system software are also the current mainstream modes. The development difficulty is reduced, and the later maintainability is also improved.
When the portable commodity weighing device of the embodiment is used, taking the use of a commodity detection group as an example,
1. the scanner 2 is used for inputting and scanning the commodity bar code to obtain the design gross weight information and the design net weight information or the design net content of the commodity;
2. placing the commodity on a weighing platform 1 to obtain actual gross weight information and actual net weight information of the commodity;
3. comparing the actual gross weight information with the actual net weight information according to the design gross weight information and the design net weight information to judge whether the sample is qualified or not;
or calculating the actual net content according to the actual gross weight information and the actual net weight information, and comparing the real-time net content with the designed net content to judge whether the sample is qualified;
4. the judgment result, the actual gross weight information and the actual net weight information are outputted to the paper report by the printer 4.
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (10)
1. A portable merchandise weighing device, comprising:
the weighing platform is used for obtaining actual gross weight information and actual net weight information of the commodity;
the scanner is used for obtaining commodity codes of the commodity and obtaining design gross weight information and design net weight information or design net content of the commodity according to the commodity codes;
the controller is electrically connected with the weighing platform and the scanner and is used for obtaining actual net content according to the actual gross weight information and the actual net weight information and comparing the actual net content with the designed net content;
and the printer is connected with the controller, is arranged at the periphery of the weighing platform and is used for outputting at least the commodity codes, the actual net content, the designed net content and the comparison result.
2. A portable merchandise weighing device according to claim 1, wherein said weighing platform comprises:
the upper end of the upper part is detachably connected with a plurality of scales;
a lower portion, the lower portion gap being disposed below the upper portion;
and one end upper side of the sensor is connected with the upper part, and the other end lower side of the sensor is connected with the lower part.
3. The portable merchandise weighing device of claim 2, wherein the sensor is a single point strain sensor.
4. The portable commodity weighing apparatus according to claim 2, wherein said sensor is bone-shaped and forms a Z-shaped structure with said upper portion and said lower portion.
5. The portable commodity weighing apparatus according to claim 2, wherein upper support plates are provided on both sides of a lower end of the upper portion, lower support plates corresponding to the upper support plates are provided on both sides of an upper end of the lower portion, and a gap between the upper support plates and the lower support plates is not smaller than a maximum deformation amount of the sensor.
6. A portable commodity weighing apparatus according to claim 2, wherein said scale is in the form of an open box, and the upper ends of said upper and lower portions are received within said scale.
7. The portable commodity weighing apparatus according to claim 1, wherein the controller comprises a housing, a processing module and a storage battery are provided inside the housing, a main switch, a display screen, an electricity meter and a communication interface are provided on one side of the housing, and a charging plate and a heat dissipation structure are provided on the other side of the housing.
8. The portable commodity weighing apparatus according to claim 7, wherein said processing module comprises an MCU micro-control unit, an ADC digital-to-analog conversion unit, a weighing signal processing unit, a power supply unit, a data storage unit, a CAN communication unit, a Profius-DP communication unit, an ethernet communication unit, an RS485 communication unit, an RS232 communication unit, an analog communication unit, a 12-way output signal unit, and an 8-way input signal unit.
9. The portable merchandise weighing device of claim 7, wherein said heat dissipating structure comprises a temperature controlled fan and said battery is a lithium battery.
10. The portable merchandise weighing device of claim 1, further comprising a housing, said housing comprising a cover and a base hingedly connected to each other, said controller being disposed on said cover, said scale table, said scanner and said printer being disposed on said base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222746766.7U CN219391082U (en) | 2022-10-18 | 2022-10-18 | Portable commodity weighing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222746766.7U CN219391082U (en) | 2022-10-18 | 2022-10-18 | Portable commodity weighing device |
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| Publication Number | Publication Date |
|---|---|
| CN219391082U true CN219391082U (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222746766.7U Active CN219391082U (en) | 2022-10-18 | 2022-10-18 | Portable commodity weighing device |
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|---|---|
| CN (1) | CN219391082U (en) |
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- 2022-10-18 CN CN202222746766.7U patent/CN219391082U/en active Active
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