阅读说明：本技术 一种降低天线干扰的手持无线设备 (Hand-held wireless equipment for reducing antenna interference ) 是由 刘洋 赵鲁豫 于 2020-05-27 设计创作，主要内容包括：本发明公开了一种降低天线干扰的手持无线设备,所述手持无线设备的主板上设置有数据采集模块和通信天线,所述数据采集模块外部设置有屏蔽结构,屏蔽结构上开有线孔,用于进出数据采集模块的连接线。所述数据采集模块为扫描头、RFID射频识别模块、超高频UHF模块、NFC识读模块、DPM识读模块中的一种。所述数据采集模块兼容若干不同尺寸的型号,所述屏蔽结构大于其中最大的型号尺寸。本发明的降低天线干扰的手持无线设备,采用电磁屏蔽原理,在前期产品设计时,所述数据采集模块外部设置有屏蔽结构,能够有效降低对天线信号的干扰,同时可以兼容其他尺寸型号的数据采集模块,具有非常高的实用价值。(The invention discloses a handheld wireless device for reducing antenna interference, wherein a data acquisition module and a communication antenna are arranged on a main board of the handheld wireless device, a shielding structure is arranged outside the data acquisition module, and a wire hole is formed in the shielding structure and used for a connecting wire for entering and exiting the data acquisition module. The data acquisition module is one of a scanning head, an RFID (radio frequency identification) module, an ultrahigh frequency UHF (ultra high frequency) module, an NFC (near field communication) reading module and a DPM (differential pulse width modulation) reading module. The data acquisition module is compatible with a plurality of models with different sizes, and the shielding structure is larger than the largest model size. The handheld wireless device for reducing antenna interference adopts the electromagnetic shielding principle, and when the product is designed in the prior period, the shielding structure is arranged outside the data acquisition module, so that the interference to antenna signals can be effectively reduced, and meanwhile, the handheld wireless device is compatible with data acquisition modules of other sizes and models, and has very high practical value.)

1. The utility model provides a reduce handheld wireless device of antenna interference, be provided with data acquisition module and communication antenna on handheld wireless device's the mainboard, its characterized in that:

the data acquisition module is provided with shielding structure in the outside, and shielding structure is last to open wired hole for business turn over data acquisition module's connecting wire.

2. The handheld wireless device of claim 1, wherein the antenna interference is reduced by:

the data acquisition module is one of a scanning head, an RFID (radio frequency identification) module, an ultrahigh frequency UHF (ultra high frequency) module, an NFC (near field communication) reading module and a DPM (differential pulse width modulation) reading module.

3. The handheld wireless device of claim 1, wherein the antenna interference is reduced by:

the shielding structure is designed into a shielding case and is attached to the main board area.

4. The handheld wireless device of claim 1, wherein the antenna interference is reduced by:

the shielding structure is designed into an outer frame structure, and then metal spraying is carried out on the outer frame structure.

5. The handheld wireless device of claim 1, wherein the antenna interference is reduced by:

the shielding structure is wrapped by conductive cloth.

6. The handheld wireless device of claim 1, wherein the antenna interference is reduced by:

the data acquisition module is compatible with a plurality of models with different sizes, and the shielding structure is larger than the largest model size.

Technical Field

The invention relates to the field of wireless signal shielding, in particular to handheld wireless equipment for reducing antenna interference.

Background

With the development of internet technology, the traditional manual entry mode can not meet the development requirements of enterprises more and more. As a result, the office model of many businesses has begun to transition from the traditional model to the informational model. Data acquisition and data processing are carried out through the industrial mobile handheld terminal, the field work efficiency can be improved for enterprises, and the market competitiveness of the enterprises is improved.

However, for enterprises needing to purchase industrial-grade mobile handheld terminals, manufacturers and products in the market are various, and many times, which kind of products are suitable for the enterprises cannot be known, so that much confusion exists. The industrial mobile handheld terminal should be designed in consideration of the following points. The operating systems of the handheld terminal are generally divided into a Windows system and an Android system. The Windows operating system is stable, the Android operating system can support secondary development, and enterprises can select the Windows operating system according to self requirements. Processor (CPU): the improvement of indexes such as the digit number, the main frequency and the like of the CPU can accelerate the data processing speed of the handheld terminal and the stability of operation. At present, the scanning head can be divided into one-dimensional scanning and two-dimensional scanning. It should be noted that a two-dimensional head can scan one, two dimensions, while a one-dimensional head can scan only one dimension. RFID read/write functions: the RFID technology has the advantages of water resistance, magnetism prevention, high temperature resistance, long service life, large reading distance, capability of encrypting data on a label, larger storage data capacity, free change of stored information and the like which are not possessed by a bar code. RFID is classified into low frequency, high frequency, and ultra high frequency. Many times, the application environment of the handheld terminal is severe, the industrial protection level is higher, and the stability of the product in operation under the environments is higher. Such as oil stain, outdoor in the north and cold chain links, the protection level of the product is higher. There are special industrial applications, such as chemical plants, gas stations, etc., where the handheld terminal is required to have explosion-proof capability for use.

Due to the complexity of the industrial environment, many functional configurations are customizable by the handset manufacturer to meet the needs of the enterprise. Thus, not all configurations are as high as possible for an enterprise, and it is sufficient to customize the configuration according to its own application scenario and project requirements.

In short, the handheld terminal supports data acquisition modes such as one-dimensional bar code/two-dimensional code scanning, RFID radio frequency identification, ultrahigh frequency UHF, NFC identification and DPM identification. The IP67 has high industrial protection level, and is widely applied to the fields of logistics express delivery, production and manufacturing, public utilities, retail sale, medicine, agriculture and animal husbandry and the like.

For example, for a handheld terminal product with a high-frequency scanning head function, there is a common problem in the industry, that is, the interference of the high-frequency scanning head to the low frequency band of 824MHz-960MHz of a machine is generally 3-5dB, and more 10 dB. This has become a common problem in the industry. It is inevitable. When the high-frequency scanning head works, interference can be generated, and the interference can be solved by changing a matching circuit instead of simply tuning an antenna. And when the product is designed in the early stage, the high-frequency scanning head compatible with a plurality of manufacturer models needs to be considered. Since the high-frequency scanning heads of each manufacturer have different structures, one main board is matched with a plurality of high-frequency scanning heads, which is difficult to add.

Disclosure of Invention

The invention aims to: the handheld wireless equipment for reducing the antenna interference is provided, and the defects of the prior art are overcome by adopting the electromagnetic shielding principle during the design of the prior product.

The technical scheme of the invention is as follows:

the utility model provides a reduce handheld wireless device of antenna interference, be provided with data acquisition module and communication antenna on handheld wireless device's the mainboard, the data acquisition module outside is provided with shielding structure, and shielding structure is last to open wired hole for business turn over data acquisition module's connecting wire.

Preferably, the data acquisition module is one of a scanning head, an RFID radio frequency identification module, an Ultra High Frequency (UHF) module, an NFC recognition module, and a DPM recognition module.

Preferably, the shielding structure is designed as a shielding case and is attached to the main board area.

Preferably, the shielding structure is designed into an outer frame structure, and then metal spraying is performed on the outer frame structure.

Preferably, the shielding structure is wrapped by conductive cloth.

Preferably, the data acquisition module is compatible with a plurality of models with different sizes, and the shielding structure is larger than the largest model size.

The invention has the advantages that:

the handheld wireless device for reducing antenna interference adopts the electromagnetic shielding principle, and when the product is designed in the prior period, the shielding structure is arranged outside the data acquisition module, so that the interference to antenna signals can be effectively reduced, and meanwhile, the handheld wireless device is compatible with data acquisition modules of other sizes and models, and has very high practical value.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is a schematic layout diagram of a motherboard of a high-frequency scanning handheld terminal device;

fig. 2 is a schematic diagram of a shielding structure of a high-frequency scanning head.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The details are as follows.