Code scanner connecting device

Abstract

The utility model belongs to the technical field of code scanners, and provides a code scanner connecting device which comprises a shell and a circuit structure, the circuit structure is arranged in the shell, and the circuit structure comprises a control chip, a communication module, a power supply module, a scanning signal input module and a scanning signal output module; the communication module, the power supply module, the code scanning signal input module, the code scanning signal output module and the dial switch module are all connected with the control chip; the power supply module is connected with the power bus so as to take electricity from the power bus and convert the electricity into corresponding voltage to provide electric energy for the code scanner connecting device; the communication module is connected with a communication bus to realize signal transmission; and the scanning signal input module and the scanning signal output module are externally connected with a code scanner. And a bus wiring connection mode is adopted, so that the overall wiring is tidier and more orderly, and the fault inspection efficiency of the code scanner can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of scanners, and particularly relates to a scanner connection device. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] A scanner is a machine that reads bar code information. It emits an infrared light source, and then decodes according to the reflection result using a chip, and finally returns the correct characters represented by the bar code. In scenarios where the number of scanners used is relatively small, a star connection method is adopted to connect the scanners, that is, power is supplied from the control cabinet, and communication is directly connected from the switch. However, in scenarios where the number of scanners used is large, the star connection method not only greatly increases the wiring workload, but also makes the wiring messy, thus bringing difficulties to work such as fault inspection of scanners. Summary of the Utility Model

[0004] In order to solve the technical problems in the above background technique, the utility model provides a scanner connection device, which adopts a bus wiring connection method, and the overall wiring is more neat and orderly, and can improve the efficiency of scanner fault inspection.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a scanner connection device.

[0007] A scanner connection device includes a housing and a circuit structure. The circuit structure is arranged in the housing, and the circuit structure includes a control chip, a communication module, a power supply module, a scanning signal input module, and a scanning signal output module;

[0008] The communication module, the power supply module, the bar code signal input module, the bar code signal output module, and the DIP switch module are all connected to the control chip;

[0009] The power supply module is connected to the power bus to draw power from the power bus and convert it into a corresponding voltage to provide electrical energy for the scanner connection device;

[0010] The communication module is connected to the communication bus to achieve signal transmission;

[0011] The scanning signal input module and the scanning signal output module are externally connected to a scanner.

[0012] As an implementation, at least one light-emitting diode is provided in both the bar code signal input module and the bar code signal output module, and the light-emitting diode is used to indicate the power-on and power-off state.

[0013] As an implementation manner, the barcode scanner connection device further includes at least one group of communication status indication modules, the communication status indication modules are connected to the control chip, the communication status indication modules include two light-emitting diodes and resistors connected in series therewith, the two light-emitting diodes respectively correspond to the on and off states of communication, and the communication status indication modules indicate the on and off states of communication through the lighting and extinguishing of the two light-emitting diodes.

[0014] As an implementation manner, the power supply module includes a first step-down module and a second step-down module connected in series, and at least one light-emitting diode is arranged on the power supply module to indicate the power on and off state.

[0015] As an implementation manner, the barcode scanner connection device further includes at least one group of chip power supply state indication circuits, and the chip power supply state indication circuits include at least one light-emitting diode and a resistor connected in series therewith.

[0016] As an implementation manner, the housing includes a first sub-housing and a second sub-housing, the first sub-housing and the second sub-housing are of an opening and closing structure, a first wire hole and a second wire hole are arranged between the first sub-housing and the second sub-housing, the first wire hole is used for connecting a power bus, and the second wire hole is used for connecting a communication bus.

[0017] As an implementation manner, the circuit structure is respectively connected to the power bus and the communication bus through a piercing structure.

[0018] As an implementation manner, the communication module is a CAN communication module, and the CAN communication module sets a bus communication address through a DIP switch; the CAN communication module includes a communication chip, the communication chip is connected to a communication main line through an input circuit, and the communication chip is connected to the control chip through an output circuit.

[0019] As an implementation manner, the circuit structure further includes an external interface, the external interface is electrically connected to the barcode scanner, and the power supply module, the scanning signal input module and the scanning signal output module are all connected to the external interface.

[0020] As an implementation manner, the control chip is further connected to a crystal oscillator circuit, a reset circuit and a debugging circuit;

[0021] The crystal oscillator circuit is connected to the clock interface of the control chip;

[0022] The reset circuit is connected to the reset interface of the control chip;

[0023] The debugging circuit is externally connected to the debugging interface of the control chip.

[0024] The beneficial effects of the present utility model are:

[0025] This utility model uses a power supply module to obtain power from the main power bus to provide electrical energy for the barcode scanner connection device, and also uses a communication module to connect to the communication bus to achieve signal transmission. It is applicable to scenarios where the number of barcode scanners in use is relatively large. By adopting the bus wiring connection method of the communication bus and the power bus, the wiring workload is greatly reduced, the overall wiring is more tidy and orderly, and the efficiency of fault inspection of the barcode scanner is improved.

[0026] Advantages of additional aspects of this utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of this utility model. Description of the Drawings

[0027] The schematic diagrams in the specification that form a part of this utility model are used to provide a further understanding of this utility model. The schematic embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0028] Figure 1 is a schematic circuit diagram of the barcode scanner connection device according to an embodiment of this utility model;

[0029] Figure 2 is a schematic diagram of the principle of the first step-down module according to an embodiment of this utility model;

[0030] Figure 3 is a schematic diagram of the principle of the second step-down module according to an embodiment of this utility model;

[0031] Figure 4 is a schematic diagram of the control chip of the barcode scanner connection device according to an embodiment of this utility model;

[0032] Figure 5 is a schematic diagram of the CAN communication circuit according to an embodiment of this utility model;

[0033] Figure 6 is using a DIP switch to set the value on a digital bit according to an embodiment of this utility model;

[0034] Figure 7 is using a DIP switch to set the value on another digital bit according to an embodiment of this utility model;

[0035] Figure 8 is a schematic diagram of the output circuit of the barcode scanner according to an embodiment of this utility model;

[0036] Figure 9 is a schematic diagram of the input circuit of the barcode scanner according to an embodiment of this utility model;

[0037] Figure 10 is a schematic diagram of the external interface of the barcode scanner connection device according to an embodiment of this utility model;

[0038] Figure 11 It is the circuit diagram for indicating the chip power supply state of the barcode scanner connection device according to an embodiment of the present utility model;

[0039] Figure 12 It is the schematic diagram of the appearance of the barcode scanner connection device according to an embodiment of the present utility model.

[0040] Among them, 1 is the first sub-shell; 2 is the second sub-shell; 3 is the first wire hole; 4 is the second wire hole; 5 is the external interface. Detailed implementation manners

[0041] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further descriptions of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0043] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0044] In the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only relationship terms determined for the convenience of describing the structural relationship of each component or element of the present utility model and do not specifically refer to any component or element of the present utility model and should not be construed as a limitation to the present utility model.

[0045] In the present utility model, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be a fixed connection, an integral connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present utility model can be determined according to specific circumstances and should not be construed as a limitation to the present utility model.

[0046] As Figure 1 shown, this embodiment provides a barcode scanner connection device, including a housing and a circuit structure. The circuit structure is disposed inside the housing, and the circuit structure includes a control chip, a communication module, a power supply module, a scanning signal input module, and a scanning signal output module;

[0047] The communication module, power supply module, code scanning signal input module, code scanning signal output module, and DIP switch module are all connected to the control chip; the power supply module is connected to the power bus to draw power from the power bus and convert it into the corresponding voltage to provide electrical energy for the code scanner connection device; the communication module is connected to the communication bus to achieve signal transmission; the scanning signal input module and the scanning signal output module are externally connected to a code scanner.

[0048] In this embodiment, the power supply module is used to draw power from the power bus to provide electrical energy for the code scanner connection device, and the communication module is also used to connect to the communication bus to achieve signal transmission. It is applicable to scenarios where the number of code scanners used is relatively large. By adopting the bus wiring connection method of the communication bus and the power bus, the wiring workload is greatly reduced, the overall wiring is more tidy and orderly, and the efficiency of code scanner fault inspection is improved.

[0049] In this embodiment, the circuit structure is respectively connected to the power bus and the communication bus through a piercing structure.

[0050] The piercing structure here is an existing structure and will not be elaborated.

[0051] In this embodiment, the power supply module includes a first step-down module and a second step-down module connected in series. At least one light-emitting diode is provided on the power supply module to indicate the power-on and power-off state.

[0052] As Figure 2 shown, the first step-down module includes a first voltage drop chip. The input end of the first voltage drop chip can be connected to a high-voltage DC power supply, such as a +48V DC power supply. The output end passes through a filter circuit to obtain a stepped-down voltage signal, such as +24V. Among them, 24V is both used as the input power supply for the second step-down module and for an external interface to supply power to the code scanner connection device.

[0053] In Figure 2 , a power status indicator (such as an LED) is connected in parallel to the output end of the first step-down module to indicate the output status of the first step-down module.

[0054] As Figure 3 shown, the second step-down module includes a second voltage drop chip. The input end of the second voltage drop chip is connected to a +24V DC power supply, and voltage signals of +5V and +3.3V are output.

[0055] The output voltage signals of +5V and +3.3V can provide electrical energy for other modules in the code scanner connection device.

[0056] As Figure 4 shown, the control chip MCU of the embodiment of the present utility model adopts a CKS32F103BU6 chip.

[0057] Figure 4 The other circuits in Figure 4 are all peripheral circuits of the control chip MCU. According to the chip manual, those skilled in the art can design their corresponding peripheral circuits. Among them, SWD DATA and SWD CLK on the control chip MCU are debugging interfaces.

[0058] It can be understood that in other embodiments, the control chip MCU can also be other models of chips, which will not be elaborated here.

[0059] In some alternative embodiments, the communication module is a CAN communication module, and the CAN communication module sets the bus communication address through a DIP switch; the CAN communication module includes a communication chip, and the communication chip is connected to the communication main line through an input circuit, and the communication chip is connected to the control chip through an output circuit.

[0060] In Figure 5 shows a circuit schematic diagram of a CAN bus communication module. Among them, the bus communication module includes a bus communication chip and its peripheral circuits. Among them, the bus communication chip is composed of a chip with the model CA-IS3062.

[0061] It can be understood that in other embodiments, the bus communication chip can also be other models of chips, which will not be elaborated here. Moreover, the communication method of the bus communication module can also be implemented by other bus communication methods except the CAN bus method, which will not be elaborated here.

[0062] Figure 6 and Figure 7 shows a relevant circuit schematic diagram for setting the numerical value on the digital bit by using a DIP switch. In the specific implementation process, the DIP switch module is composed of a DIP switch and the grounding resistors of each connected branch.

[0063] Figure 8 shows an output circuit schematic diagram of the barcode scanner according to the embodiment of the present invention. Among them, the scanning signal input module is connected to the output end of the barcode scanner. Figure 9 shows an input circuit schematic diagram of the barcode scanner according to the embodiment of the present invention. Among them, the scanning signal output module is connected to the display device.

[0064] In the specific implementation process, the control chip is also connected to an external interface. The circuit structure of the external interface is as Figure 10 shown. The external interface is electrically connected to the barcode scanner, and the power supply module, the scanning signal input module, and the scanning signal output module are all connected to the external interface.

[0065] In some other embodiments, the control chip is also connected to a crystal oscillator circuit, a reset circuit, and a debugging circuit;

[0066] The crystal oscillator circuit is connected to the clock interface of the control chip;

[0067] The reset circuit is connected to the reset interface of the control chip;

[0068] The debugging circuit is externally connected to the debugging interface of the control chip.

[0069] Among them, the circuit structures of the crystal oscillator circuit, the reset circuit and the debugging circuit are all existing structures, which can be designed according to the control chip and will not be elaborated here.

[0070] In this embodiment, the scanner connection device further includes at least one group of chip power supply status indication circuits. The chip power supply status indication circuit includes at least one light-emitting diode and a resistor connected in series with it, as Figure 11 shown.

[0071] Both the scanning signal input module and the scanning signal output module are provided with at least one light-emitting diode, and the light-emitting diode is used to indicate the power-on and power-off states.

[0072] The scanner connection device further includes at least one group of communication status indication modules. The communication status indication module is connected to the control chip. The communication status indication module includes two light-emitting diodes and resistors connected in series with them. The two light-emitting diodes respectively correspond to the two states of communication on and off. The communication status indication module indicates the on and off states of communication through the lighting and extinguishing of the two light-emitting diodes.

[0073] As Figure 12 shown, the housing of this embodiment includes a first sub-housing 1 and a second sub-housing 2. The first sub-housing 1 and the second sub-housing 2 are of an openable and closable structure. A first wire hole 3 and a second wire hole 4 are provided between the first sub-housing 1 and the second sub-housing 2. The first wire hole 3 is used to connect the power bus, and the second wire hole 4 is used to connect the communication bus. The first sub-housing 1 is further provided with an external interface 5.

[0074] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A barcode scanner connection device, characterized in that: It includes a housing and a circuit structure, wherein the circuit structure is arranged in the housing, and the circuit structure includes a control chip, a communication module, a power supply module, a scanning signal input module and a scanning signal output module; The communication module, power supply module, code scanning signal input module, code scanning signal output module and code switching module are all connected to the control chip; The power supply module is connected to the power bus to take power from the power bus and convert it into a corresponding voltage to provide power for the scanner connection device; The communication module is connected to the communication bus to achieve signal transmission; The scanning signal input module and the scanning signal output module are externally connected to a barcode scanner.

2. The barcode scanner connection device according to claim 1, characterized in that: The code scanning signal input module and the code scanning signal output module are both provided with at least one light emitting diode, and the light emitting diode is used to indicate the on-off status of the power supply.

3. The barcode scanner connection device according to claim 1, characterized in that: The barcode scanner connection device also includes at least one group of communication status indication modules, which are connected to the control chip. The communication status indication module includes two light-emitting diodes and a resistor connected in series therewith, and the two light-emitting diodes correspond to the on and off states of the communication respectively. The communication status indication module indicates the on and off state of the communication by turning on and off the two light-emitting diodes.

4. The barcode scanner connection device according to claim 1, characterized in that: The power supply module comprises a first step-down module and a second step-down module connected in series. The power supply module is provided with at least one light emitting diode for indicating the on / off state of the power supply.

5. The barcode scanner connection device according to claim 1, characterized in that: The barcode scanner connection device also includes at least one group of chip power supply status indication circuits, and the chip power supply status indication circuit includes at least one light emitting diode and a resistor connected in series therewith.

6. The barcode scanner connection device according to claim 1, characterized in that: The shell includes a first sub-shell and a second sub-shell, the first sub-shell and the second sub-shell are open-closed structures, a first wire hole and a second wire hole are provided between the first sub-shell and the second sub-shell, the first wire hole is used to connect the power bus, and the second wire hole is used to connect the communication bus.

7. The barcode scanner connection device according to claim 1, characterized in that: The circuit structure is connected to the power bus and the communication bus respectively through the puncture structure.

8. The barcode scanner connection device according to claim 1, characterized in that: The communication module is a CAN communication module, and the bus communication address is set by a DIP switch; the CAN communication module includes a communication chip, and the communication chip is connected to the communication main line through an input circuit, and the communication chip is connected to the control chip through an output circuit.

9. The barcode scanner connection device according to claim 1, characterized in that: The circuit structure also includes an external interface, which is electrically connected to the barcode scanner, and the power supply module, the scanning signal input module and the scanning signal output module are all connected to the external interface.

10. The barcode scanner connection device according to claim 1, characterized in that: The control chip is also connected to a crystal oscillator circuit, a reset circuit and a debugging circuit; The crystal oscillator circuit is connected to a clock interface of the control chip; The reset circuit is connected to the reset interface of the control chip; The debugging circuit is externally connected to a debugging interface of a control chip.

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