Code scanning device for enhancing signal through external antenna

Abstract

The utility model belongs to the technical field of code scanning, and relates to a code scanning device capable of enhancing signals through an external antenna, which comprises a main board and an auxiliary board, the auxiliary board is arranged inside the code scanning device, an external antenna interface is arranged on the auxiliary board, the external antenna interface is used for connecting the external antenna and the auxiliary board, and the main board is connected with the auxiliary board. The auxiliary board is provided with an antenna coaxial seat, and the auxiliary board is inserted into the antenna coaxial seat through a coaxial line to be connected with the main board. According to the code scanning device for enhancing the signal through the external antenna, the code scanning speed and stability are improved, the number of usable scenes is increased, and the requirements of different industries are met; with the continuous development of technologies such as the Internet of Things and big data, the code scanning technology can be applied in more fields, and more convenient and efficient code scanning experience is provided for users; due to the design of the jointed board, the purposes of reducing the manufacturing cost of the PCB and the maintenance cost of quick-wear parts, saving the production cost and facilitating the maintenance can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of code scanning, and more specifically, to a code scanning device that enhances signals through an external antenna. Background Art

[0002] With the rapid development of modern information technology, code scanning technology has been widely used in various fields, such as mobile payment, product traceability, information acquisition, etc. However, in actual application, code scanning devices are often limited by signal problems, resulting in a decrease in user experience.

[0003] Conventional barcode scanning devices usually have only built-in antennas, which are FPC antennas that are pasted inside the shell and connected to the mainboard via coaxial cables. Conventional panel design methods include: making the mainboard and sub-board separately (such as Figure 1 , Figure 2 As shown). The conventional panel design flaw is that the secondary board needs to be made separately, and the panel space is not used reasonably. The panel size of a single main board is 218.2mm×159.09mm, while the panel size of a secondary board is 85.7mm×63.2mm. If the main board and the secondary board are not put together, this will be an additional cost for the secondary board. Another conventional design method is to weld the wearing parts directly to the main board without distinguishing between the main and secondary boards. Although this method can save the cost of making a separate secondary board, if the wearing parts are damaged, the entire main board may need to be scrapped, and the repair cost is very high. Utility Model Content

[0004] The technical problem to be solved by the utility model is that in actual application, the code scanning device is often limited by signal problems, resulting in a decrease in the user experience. In view of the above-mentioned defects of the prior art, a code scanning device that enhances the signal through an external antenna is provided, including:

[0005] A main board and a sub-board, wherein the sub-board is arranged inside the code scanning device, an external antenna interface is arranged on the sub-board, and the external antenna interface is used to connect the external antenna and the sub-board, an antenna coaxial seat is arranged on the sub-board, and the sub-board is connected to the main board by inserting the antenna coaxial seat through a coaxial line.

[0006] Preferably, a notch is provided on the main board.

[0007] Preferably, the size of the notch is adapted to the size of the sub-plate.

[0008] Preferably, the notch is provided on one side of the main board.

[0009] Preferably, when the secondary panel is assembled on the main panel, the assembled panel size of the main panel is the same as the size of the main panel.

[0010] Preferably, the size of the panel is (218.2±0.1) mm×(159.09±0.5) mm.

[0011] Preferably, the size of the puzzle board is 218.2 mm×159.09 mm.

[0012] Preferably, a signal amplifying circuit is provided on the sub-board.

[0013] Preferably, the signal amplifying circuit comprises: an input port interface, a filter, a low noise amplifier, a mixer, an intermediate frequency amplifier and an output port interface which are electrically connected.

[0014] Preferably, a protection circuit is also provided on the sub-board.

[0015] The implementation of the utility model of the code scanning device that enhances the signal through an external antenna has the following beneficial effects: the code scanning device that enhances the signal through an external antenna not only improves the scanning speed and stability, but also expands the number of applicable scenarios to meet the needs of different industries; with the continuous development of technologies such as the Internet of Things and big data, code scanning technology will be applied in more fields to provide users with a more convenient and efficient scanning experience; its panel design can achieve the purpose of reducing PCB manufacturing costs and reducing the maintenance costs of wearing parts, saving production costs, and facilitating maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. The utility model will be further described below in combination with the drawings and embodiments. In the drawings:

[0017] Figure 1 A schematic diagram of a mainboard assembly made separately for a code scanning device in the prior art;

[0018] Figure 2 A schematic diagram of separately making an antenna sub-board for a code scanning device in the prior art;

[0019] Figure 3 A schematic diagram of the jigsaw puzzle made of the main board and antenna sub-board of the barcode scanning device for enhancing the signal through an external antenna of the utility model; DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their 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 at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0023] Figure 3 This is a schematic diagram of the assembly of the main board and antenna sub-board of the barcode scanning device for enhancing the signal through an external antenna of the utility model. Figure 3 In the first embodiment of the utility model, the code scanning device for enhancing the signal through an external antenna includes at least a main board and a sub-board. The sub-board is arranged inside the code scanning device. The sub-board is provided with an external antenna interface. The external antenna interface is used to connect the external antenna and the sub-board. The sub-board is provided with an antenna coaxial seat. The sub-board is connected to the main board by inserting the antenna coaxial seat through the coaxial line.

[0024] In order to enhance the signal receiving capability of the code scanning device, this embodiment adds an external antenna sub-board inside the device. The sub-board is exquisitely designed, easy to install and disassemble, and provides an external antenna interface, which is convenient for users to add an external antenna according to actual needs.

[0025] The main board is provided with a notch. The size of the notch is adapted to the size of the secondary board. The notch is provided on one side of the main board. When the secondary board is assembled on the main board, the size of the assembled board of the main board is the same as the size of the main board.

[0026] The size of the panel is preferably (218.2±0.1) mm×(159.09±0.5) mm. In this embodiment, the size of the panel is set to 218.2 mm×159.09 mm.

[0027] The external antenna sub-board uses high-frequency circuit boards and micro components to achieve electrical connection and signal transmission with the main board. The sub-board is equipped with a signal amplification circuit, which can effectively amplify the received signal strength, thereby improving the signal reception capability of the code scanning device. In addition, the sub-board also has anti-interference capabilities and can maintain stable signal reception in complex electromagnetic environments.

[0028] Users can choose a suitable external antenna according to the actual usage scenario and signal requirements. For example, in an environment with weak signals, you can choose an antenna with higher gain; in a scenario where long-distance code scanning is required, you can choose an antenna with a longer receiving distance. When installing an external antenna, users only need to plug the antenna into the interface on the sub-board and then perform simple debugging according to the instructions.

[0029] The signal amplification circuit includes: an input terminal interface, a filter, a low noise amplifier, a mixer, an intermediate frequency amplifier and an output terminal interface which are electrically connected.

[0030] The external antenna is connected to the filter through the input interface to ensure that the signal can enter the circuit smoothly. The output of the filter is connected to the input of the low-noise amplifier to achieve preliminary amplification of the signal. The output of the low-noise amplifier is connected to the input of the mixer. At the same time, the output of the local oscillator is also connected to the mixer to complete the frequency conversion of the signal. The output of the mixer is connected to the input of the intermediate frequency amplifier to further amplify the intermediate frequency signal. Finally, the output of the intermediate frequency amplifier is connected to the output interface to transmit the amplified signal to the main control circuit of the code scanning device.

[0031] The input interface is responsible for receiving the signal from the external antenna and transmitting it to the subsequent circuit. The filter is used to filter out noise and interference in the signal to ensure the purity of the signal. The low-noise amplifier preliminarily amplifies the filtered signal to increase the amplitude of the signal. The mixer mixes the amplified signal with the signal generated by the local oscillator to achieve frequency conversion. The intermediate frequency amplifier amplifies the mixed intermediate frequency signal to further enhance the signal strength. The output interface outputs the amplified signal to the main control circuit of the code scanning device for subsequent processing.

[0032] The working principle of the signal amplification circuit is mainly based on the processes of signal transmission, filtering, amplification and conversion. Specifically, when the external antenna receives the signal, the signal first enters the filter through the input interface. The filter filters out the noise and interference components in the signal according to the set frequency range to ensure the purity of the signal. The filtered signal enters the low noise amplifier. The low noise amplifier achieves preliminary amplification of the signal by increasing the amplitude of the signal. In this process, the low noise amplifier will try to reduce its own noise interference to ensure the quality of the signal. The amplified signal enters the mixer. The mixer mixes the signal with the signal generated by the local oscillator to achieve the frequency conversion of the signal. By adjusting the frequency of the local oscillator, the signal can be converted to a frequency range that is easy to process. The intermediate frequency signal after mixing enters the intermediate frequency amplifier. The intermediate frequency amplifier further amplifies the intermediate frequency signal to enhance the strength of the signal. After processing by the intermediate frequency amplifier, the amplitude and quality of the signal are significantly improved. Finally, the amplified intermediate frequency signal is transmitted to the main control circuit of the code scanning device through the output interface. The main control circuit performs subsequent processing based on the received signal to complete the code scanning operation.

[0033] In specific implementation, the realization of the signal amplification circuit needs to consider multiple factors, including circuit layout, component selection, power consumption control, etc. In order to achieve efficient and stable signal amplification function, it should be noted that:

[0034] Optimize circuit layout: Reasonable circuit layout helps reduce loss and interference during signal transmission. During the design process, the length of the connection between components should be minimized to avoid unnecessary attenuation of the signal during transmission.

[0035] Select components: The performance of components has an important impact on the overall performance of the circuit. When selecting components, give priority to products with stable performance, low noise and low power consumption to ensure the stability and reliability of the circuit.

[0036] Power consumption control: The signal amplification circuit will generate a certain amount of power consumption during operation. In order to reduce power consumption, low-power design technologies such as dynamic power management and clock gating can be used. At the same time, power consumption can be further reduced by optimizing the circuit structure and reducing the operating voltage.

[0037] In addition, in order to achieve better signal reception, the external antenna needs to be optimized. For example, a multi-band antenna design can be used to meet the signal reception requirements of different frequency bands; at the same time, the shape and size of the antenna can be adjusted to optimize its radiation characteristics and impedance matching performance.

[0038] By adding an external antenna sub-board and a signal amplification circuit, the signal receiving capability of the code scanning device can be effectively improved.

[0039] In some optional implementations of this embodiment, a protection circuit may also be provided on the sub-board. The protection circuit may include a current limiting resistor, a voltage stabilizing diode, a transient suppression diode (TVS), and a filter capacitor. The protection circuit can effectively prevent damage to the code scanning device caused by excessive voltage, excessive current, and electromagnetic interference.

[0040] The current limiting resistor is connected in series to the input end of the external antenna sub-board to limit the amplitude of the input current and prevent excessive current from damaging the device. The voltage stabilizing diode is connected in parallel to the power input end to stabilize the voltage and ensure that the code scanning device can work normally in an environment with large voltage fluctuations. The transient suppression diode is used to absorb and suppress transient overvoltage pulses from the power supply or signal line to prevent these pulses from damaging the circuit. The filter capacitor is used to filter out high-frequency noise in the power supply or signal line to improve the purity of the signal.

[0041] The working principle of the protection circuit is: when the barcode scanning device of the utility model receives a signal, the signal is first enhanced by the external antenna sub-board, and then transmitted to the main circuit board for processing. In this process, the protection circuit plays a vital role. The current limiting resistor can limit the amplitude of the input current to prevent excessive current from damaging the circuit; the voltage regulator diode can stabilize the power supply voltage to avoid the normal operation of the circuit being affected by voltage fluctuations; the transient suppression diode can absorb and suppress transient overvoltage pulses to prevent these pulses from damaging the circuit; the filter capacitor can filter out high-frequency noise and improve the purity of the signal.

[0042] It can be seen that by adding an external antenna sub-board, the signal receiving capability of the code scanning device has been significantly improved, which has brought many advantages and expanded application scenarios.

[0043] Improve scanning speed and stability: After the signal is enhanced, the scanning device can capture and decode the QR code more quickly and stably. Even in an environment with weak signals or large interference, it can maintain a high recognition rate and accuracy, improving the user experience.

[0044] Expand the number of usable scenarios: The enhanced signal scanner can be used in more scenarios. For example, in scenarios such as warehouses and logistics that require long-distance scanning, by adding an external antenna, it can ensure that the scanner can still maintain stable signal reception capabilities at a longer distance. In addition, in places with weak signal coverage such as basements and tunnels, enhanced signals can also effectively improve the success rate of scanning.

[0045] Meeting the needs of different industries: Different industries have different requirements for barcode scanners. By adding external antennas, the barcode scanner can be customized and optimized according to the signal requirements of different industries to meet their specific usage scenarios and performance requirements. For example, in the retail industry, the barcode scanner needs to quickly and accurately identify product barcodes; in the medical industry, the barcode scanner needs to stably and reliably read patient information. By enhancing the signal, better barcode scanning solutions can be provided for different industries.

[0046] Through the design of the above embodiments, the utility model has the following beneficial effects: the code scanning device that enhances the signal through an external antenna not only improves the code scanning speed and stability, but also expands the number of applicable scenarios to meet the needs of different industries; with the continuous development of technologies such as the Internet of Things and big data, code scanning technology will be applied in more fields to provide users with a more convenient and efficient code scanning experience; its panel design can achieve the purpose of reducing PCB manufacturing costs and reducing the maintenance costs of wearing parts, saving production costs, and facilitating maintenance.

[0047] The present invention is described according to specific embodiments, but those skilled in the art should understand that various changes and equivalent substitutions can be made without departing from the scope of the present invention. In addition, in order to adapt to specific occasions of the present invention technology, many modifications can be made to the present invention without departing from its protection scope. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all embodiments that fall within the scope of protection of the claims.

Claims

1. A code scanning device that enhances the signal through an external antenna, characterized in that: include: A main board and a sub-board, wherein the sub-board is arranged inside the code scanning device, an external antenna interface is arranged on the sub-board, and the external antenna interface is used to connect the external antenna and the sub-board, an antenna coaxial seat is arranged on the sub-board, and the sub-board is connected to the main board by inserting the antenna coaxial seat through a coaxial line.

2. The code scanning device for enhancing the signal through an external antenna according to claim 1, characterized in that: The main board is provided with a notch.

3. The code scanning device for enhancing the signal through an external antenna according to claim 2, characterized in that: The size of the notch is adapted to the size of the sub-plate.

4. The code scanning device for enhancing the signal through an external antenna according to claim 2, characterized in that: The notch is arranged on one side of the main board.

5. The code scanning device for enhancing the signal through an external antenna according to claim 3, characterized in that: When the secondary board is assembled on the main board, the assembled board size of the main board is the same as the size of the main board.

6. The code scanning device for enhancing the signal through an external antenna according to claim 5, characterized in that: The size of the puzzle board is (218.2±0.1) mm×(159.09±0.5) mm.

7. The code scanning device for enhancing signals through an external antenna according to claim 6, characterized in that: The size of the puzzle board is 218.2 mm×159.09 mm.

8. The code scanning device for enhancing signals through an external antenna according to any one of claims 1 to 7, characterized in that: The sub-board is provided with a signal amplifying circuit.

9. The code scanning device for enhancing signals through an external antenna according to claim 8, characterized in that: The signal amplifying circuit comprises: an input terminal interface, a filter, a low noise amplifier, a mixer, an intermediate frequency amplifier and an output terminal interface which are electrically connected.

10. The code scanning device for enhancing signals through an external antenna according to claim 8, characterized in that: The sub-board is also provided with a protection circuit.

Images