CN203364949U

CN203364949U - Electronic scale capable of switching multiple modules

Info

Publication number: CN203364949U
Application number: CN 201320338242
Authority: CN
Inventors: 杜晓伟; 孙传恒; 周超; 解菁; 李文勇
Original assignee: Beijing Research Center for Information Technology in Agriculture
Current assignee: Beijing Research Center for Information Technology in Agriculture
Priority date: 2013-06-13
Filing date: 2013-06-13
Publication date: 2013-12-25
Anticipated expiration: 2023-06-13

Abstract

The utility model provides an electronic scale capable of switching multiple modules. The electronic scale comprises a controller which is provided with multiple interfaces, a weighing module which is connected with the controller and used for acquiring weight of objects, and a switching module which is connected with the controller via one of the multiple interfaces and used for switching connection between the controller and external connecting modules. The electronic scale capable of switching the multiple modules is used for switching the interfaces of the controller so that the different external connecting modules can be connected with the controller when required so that corresponding operations are executed.

Description

Electronic scale capable of being connected with multiple modules in rotating mode

Technical Field

The utility model relates to an electronic scale technical field, in particular to can change electronic scale that connects a plurality of modules.

Background

Electronic scales are now capable of performing more and more functions in addition to the basic weighing operation. The number of interfaces on a chip used as a controller in the conventional electronic scale is small, and the electronic scale cannot realize more functions due to the limitation of the number of the interfaces. For example, in an electronic scale using LPC1766 as a chip, 4 serial ports of the electronic scale need to be connected to a printer module, an RFID module, a GPS module, and a background system, respectively, in practical applications, if the electronic scale needs to perform wireless data transmission with a background server, no redundant serial ports are available for connecting a wireless transmission module, and only an external device is added to implement a wireless transmission function, which results in a high cost.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The to-be-solved technical problem of the utility model is: the electronic scale capable of being switched with a plurality of modules is provided, and one interface can be switched with a plurality of external modules, so that a controller of the electronic scale can be connected with the plurality of external modules through a limited number of interfaces to realize corresponding functions.

(II) technical scheme

In order to solve the technical problem, the utility model provides a can change electronic scale that connects a plurality of modules, include:

a controller having a plurality of interfaces;

the weighing module is connected with the controller and used for acquiring the weight of the article; and

and the switching module is connected with the controller through one of the interfaces and is used for switching the connection between the controller and an external module.

Preferably, the external module includes: one or more of a GPS module, a printing module, an RFID module, an input module, a display module, a wireless module, and a back-end system.

Preferably, the wireless module includes: one or more of a Wi-Fi sub-module, a Zigbee sub-module and an RF sub-module; wherein,

the Wi-Fi sub-module is used for wirelessly transmitting data to a target server in a Wi-Fi mode;

the Zigbee sub-module is used for wirelessly transmitting data to the target server in a Zigbee mode;

the RF sub-module is used for wirelessly transmitting data to a target server in an RF radio frequency mode.

Preferably, the number of the adapter modules is multiple, and the adapter modules are respectively connected with one of the interfaces.

Preferably, the patching module further comprises: and the change-over switch is used for switching the connection between the controller and the external module.

Preferably, the patching module further comprises:

the level conversion chip is used for converting the level mode provided by the interface into the level mode suitable for the external module;

and the voltage transformation chip is used for converting the voltage provided by the interface into a voltage suitable for the level conversion chip.

Preferably, the GPS module is configured to acquire geographic location information of the item.

Preferably, the printing module is for printing a label of the article.

Preferably, the tag information of the article tag includes weight information and geographical location information of the article.

Preferably, the RFID module is configured to acquire identification information of the object.

(III) the beneficial effects.

The utility model discloses an interface to the controller carries out the switching, makes an interface a plurality of external modules of switching for the electronic scale controller can be through a plurality of external modules of interface connection of limited quantity in order to realize corresponding function. And simultaneously, the utility model discloses need not to add and to put external equipment and can realize the required corresponding function of electronic scale, practiced thrift the cost.

Drawings

The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and are not to be understood as limiting the invention in any way, in which:

fig. 1 is a diagram illustrating an example of an electronic scale capable of transferring a plurality of modules according to an embodiment of the present invention;

FIG. 2 is a diagram illustrating an exemplary structure of an electronic scale capable of transferring a plurality of modules according to another embodiment of the present invention;

fig. 3 is an exemplary diagram of an internal structure of an electronic scale capable of switching a plurality of modules according to an embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In an electronic scale, each functional module needs to be connected with an interface of a chip serving as a controller to realize corresponding functions, and the number of the interfaces is often tense. The utility model provides a can change electronic scale that connects a plurality of modules can change over an interface through switching module, makes it can connect a plurality of different external module to switch corresponding external module when needs.

Fig. 1 is a diagram illustrating an example of an electronic scale capable of transferring a plurality of modules according to an embodiment of the present invention, and it should be understood that this example is only for illustrating the present invention, and is not a limitation of the present invention. As shown in fig. 1, the electronic scale may include: a controller 10, a weighing module 20, an adaptor module 30 and an external module 40.

The electronic scale may include a plurality of switch modules 30 connected to the controller 10, wherein each switch module 30 is connected to one of the plurality of interfaces of the controller 10. Each adaptor module 30 may further be connected to a plurality of external modules 40, the adaptor module 30 may switch the connection between the plurality of external modules 40 and the controller 10 through a switch, and the switch is operated to connect the corresponding external modules 40 when a certain operation is required, wherein the external modules 40 may include: the system comprises a wireless module, a printing module, an RFID module, a GPS module, an input module, a display module, a background system and the like.

Take a tracing electronic scale using an LPC1766 chip as a controller as an example, the structure of the electronic scale capable of transferring multiple modules according to the embodiment of the present invention is specifically described with reference to fig. 2.

In fig. 2, the controller 100 may interface the weighing module 200, the adaptor module 300, the GPS module 500, the printing module 600, the RFID module 700, the input module 800, and the display module 900, respectively, and control the modules to perform operations. Specifically, the weighing module 200 is connected to the controller 100 through the bus interface, the input module 800 and the display module 900 are connected to the controller 100 through the I/O interface, the adaptor module 300, the GPS module 500, the print module 600 and the RFID module 700 are connected to the controller 100 through the serial port, and the wireless module 400 and the background system are connected to the controller 100 through the adaptor module 300.

The weighing module 200 may employ a scale and a gravity sensor for acquiring the weight of the article and may interface the acquired weight information of the article to the controller 100.

One end of the switching module 300 is connected with a serial port of the controller 100, and the other end of the switching module provides a serial port for connection, and the switching module 300 can use a switch to switch the connection between the wireless module 400 and the background system and the controller 100, specifically, when the program needs to be updated and the user information needs to be downloaded, the switch can be operated to connect the controller 100 and the background system; when wireless data transmission is required, the selector switch may be operated to connect the controller 100 with the wireless module 400.

Further, the adaptor module 300 may further include a level conversion chip for converting a level mode provided by the interface of the controller 100 into a level mode suitable for the wireless module 400, and a transformer chip for converting a voltage provided by the external interface into a voltage suitable for the level conversion chip. For example, the wireless module 400 uses a level mode required when Wi-Fi is used for transmitting data as a TTL level, and a level mode of a serial port of an LPC1766 chip is a CMOS level, and a MAX232 chip can be used as a level conversion chip to convert the CMOS level into the TTL level; the voltage required by the MAX232 chip is 3.3V, the voltage provided by the serial port of the LPC1766 chip is 5V, and the LM1085 chip can be used as a transformation chip to convert the voltage of 5V into 3.3V.

And a wireless module 400 connected to the switching module 300 for transmitting data to the target server wirelessly. The wireless module 400 may further include: a Wi-Fi sub-module, or a Zigbee sub-module, or an RF sub-module. The wireless module 400 can wirelessly transmit data to the target server through the Wi-Fi sub-module or the Zigbee sub-module or the RF sub-module according to the specific situation of the application environment. When the utility model is in one-to-one communication with the target server, an RF radio frequency module can be arranged at the target server end, and then the data is wirelessly transmitted by the RF sub-module in a radio frequency mode; when a plurality of the utility model discloses when needs and target server carry out radio communication, can adopt Wi-Fi or Zigbee's transmission mode through Wi-Fi submodule piece or Zigbee submodule piece, wherein, Wi-Fi is applicable to the wireless transmission far away from, and the Zigbee is applicable to the near wireless transmission of distance.

The GPS module 500, which may employ a GPS receiver, acquires the geographical location information of the item and may transmit the acquired geographical location information of the item to the controller 100 through an interface.

The printing module 600, which may employ a label printing device, is configured to print labels for articles, the label information including article weight information and origin information. The printing module 600 can perform a corresponding printing operation according to information transmitted from the main control 100.

The RFID module 700, which may be a radio frequency identification device, is configured to scan an ID card with identification information of an object to obtain identification information of the object.

The input module 800, which may be a keyboard, is used to input information about the item.

The display module 900 may employ an LED display screen for displaying information of the article.

In practical applications, the GPS module 500 may be used to acquire the geographical location information of the origin and each transfer location of the article, and the geographical location information and the weight information of the article may be printed on the label of the article by the printing module 600, and the transfer module 300 may be used to communicate with the wireless module 400 to wirelessly transmit the acquired information to the target server.

Fig. 3 is an illustration showing an example of an internal structure of an electronic scale capable of transferring a plurality of modules according to an embodiment of the present invention, as shown in fig. 3, 1 is a scale pan, which can adopt a mode slightly lower than the periphery in the middle to prevent an object from sliding off, and 2 is a gravity sensor, which can acquire weight information of an object. The 13 is a cushion block between the gravity sensor and the scale pan, the 12 is a cushion block between the gravity sensor and the gravity sensor fixing device 3, and the cushion blocks shown by 12 and 13 are arranged to further improve the weighing accuracy. The switching module 5 is connected with the wireless module through a serial port provided by the switching module 5. The gravity sensor sheet metal base 4 is fixed on the aluminum alloy base plate 6, so that the stress of the whole electronic scale can be concentrated on the aluminum alloy base plate 6, and the aluminum alloy base plate 6 is also used for fixing the core circuit board 11, the printing equipment 7 and each functional module. The core circuit board 11 includes a controller, a GPS module, an RFID module, an a/D conversion circuit, and the like. 9 is a power interface, 10 is a power switch, and 8 is a ground pin.

The above embodiments are only for illustrating the present invention and are not to be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An electronic scale capable of switching a plurality of modules, comprising:

a controller having a plurality of interfaces;

2. The electronic scale of claim 1, wherein the external module comprises: one or more of a GPS module, a printing module, an RFID module, an input module, a display module, a wireless module, and a back-end system.

3. An electronic scale according to claim 1, wherein the wireless module comprises: one or more of a Wi-Fi sub-module, a Zigbee sub-module and an RF sub-module; wherein,

4. The electronic scale of claim 1, wherein the plurality of adapter modules are respectively connected to one of the plurality of interfaces.

5. The electronic scale of claim 1, wherein the adaptor module further comprises: and the change-over switch is used for switching the connection between the controller and the external module.

6. The electronic scale of claim 1, wherein the adaptor module further comprises:

7. An electronic scale according to claim 2, wherein the GPS module is adapted to obtain geographical location information of the item.

8. An electronic scale according to claim 2, wherein the printing module is adapted to print a label for the item.

9. The electronic scale of claim 8, wherein the tag information of the item tag includes weight information and geographical location information of the item.

10. The electronic scale of claim 2, wherein the RFID module is configured to obtain identification information of the item.