CN209201068U

CN209201068U - A kind of the GPRS mould group and its pcb board of high accuracy positioning

Info

Publication number: CN209201068U
Application number: CN201821592985.1U
Authority: CN
Inventors: 龚铁兵
Original assignee: Shenzhen Chuangxin Electronic Technology Co Ltd
Current assignee: Shenzhen Chuangxin Electronic Technology Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2019-08-02
Anticipated expiration: 2028-09-28

Abstract

The utility model discloses a kind of GPRS communications modules of high accuracy positioning, it include radio-frequency module and Internet of Things main control module in the circuit of the communications module, radio-frequency module is connect with Internet of Things main control module, the invention also discloses a kind of pcb boards of the GPRS communications module of high accuracy positioning, it include support plate and a plurality of electronic components in the pcb board, the setting member pad of electronic component is corresponded on support plate, a plurality of electronic components are welded on support plate by component pads, and a plurality of electronic components pass through pad and are electrically connected with support plate；A plurality of electronic components are each attached on the upper surface of support plate.Compared with the prior art, in communications module provided by the utility model, the modular circuit of radio-frequency module and Internet of Things main control module composition embeds ICP/IP protocol, industrial field data is facilitated to communicate, and in the pcb board of this communications module, all electronic components are each attached on the upper surface of support plate, user can be facilitated to fix this mould group.

Description

A kind of the GPRS mould group and its pcb board of high accuracy positioning

Technical field

The utility model belongs to field of communication technology, in particular to the GPRS mould group and its PCB of a kind of high accuracy positioning Plate.

Background technique

In modern industrial control system, single-chip microcontroller is often used to realize the data acquisition of industry spot, single-chip microcontroller is to industry After on-site data gathering, to meet the analysis of further data and storage needs, often need by these data and host computer or its How his control system interactive correspondence realizes large batch of data interaction between different systems, how to improve data biography How defeated efficiency guarantees that the problems such as fidelity of data transmission becomes as in industrial control process the problem of urgent need to resolve.

GPRS is a kind of new data loading service that developed on existing gsm system, supports ICP/IP protocol, It can be with the direct intercommunication of Packet Data Network.The application range of GPRS wireless transmitting system is very extensive, can almost cover all In the data of low business and low rate transmission, be especially suitable for burst small amount data transmission business.GPRS is wireless universal The abbreviation of Packet Service (GeneralPacketRadioSystem) is a kind of technology between the second generation and the third generation, Commonly referred to as 2.5G.GPRS is using frequency range identical with GSM, frequency bandwidth, burst structure, wireless-modulated standard, frequency hopping rule And identical TDMA frame structure.Therefore, exhausted big portion when constructing gprs system on the basis of gsm system, in gsm system Sub-unit does not all need to make hardware modifications, need to only make software upgrading.There is GPRS, the call set-up time of user greatly shortens, Can almost it accomplish " always online ".In addition, GPRS is by the data volume of operator's transmission rather than comes on the basis of the Connection Time Charging, to enable the cost of serving of each user lower.GPRS is in original GSM net based on circuit switching (CSD) mode Two new network nodes are introduced on network.GPRS serving GPRS support node (SGSN) and gateway support node (GGSN).SGSN and MSC is in same hierarchy level, and the storage unit for tracking single MS realizes security function and access control, and is connected by frame relay It is connected to base station system.GGSN supports the intercommunication with external packet-switched networks, and connects via IP-based GPRS backbone network and SGSN It is logical.

In modern industry control process, it is often used serial communication, serial communication simple, long transmission distance spy with path Point, but in existing industrial control data transmission process, often occur using serial communication, but system does not support ICP/IP protocol Situation, this brings big inconvenience to industrial data transmission.

Summary of the invention

Do not have to solve the above problems, the purpose of this utility model is to provide one kind suitable for single-chip data acquisition system There are the GPRS mould group and its pcb board of ICP/IP protocol stack but the high accuracy positioning using serial communication.

Another of the utility model is designed to provide the GPRS mould group and its pcb board of a kind of high accuracy positioning, the mould Group accurate positioning, transmission rate are high, small in size, easy to use, are suitable for extensive industrial occasions.

To achieve the above object, the technical solution of the utility model is as follows:

The utility model provides a kind of GPRS mould group of high accuracy positioning, includes radio frequency mould in the circuit of the communications module Block and Internet of Things main control module, radio-frequency module are connect with Internet of Things main control module, include power supply list in Internet of Things main control module Member, audio unit, baseband signal processing unit, data processing unit and input-output unit, radio-frequency module pass through baseband signal Processing unit is connect with data processing unit, and baseband signal processing unit, audio unit and input-output unit are and at data Unit connection is managed, power supply unit is connect with audio treatment unit, and power supply unit is also connect with radio-frequency module.

It include radio frequency chip, the concrete model of radio frequency chip are as follows: HS8298S in radio-frequency module；Internet of Things main control module Middle each unit is integrated on same master control IC, the concrete model of master control IC are as follows: MT2503.

It is additionally provided with low noise amplification module in the modular circuit, includes low noise amplification core in low noise amplification module Piece, the concrete model of the chip are as follows: MXDLN16U_DS, and the chip is connect with master control IC.

In this mould group, each unit in Internet of Things main control module is integrated on same master control IC, on the one hand very The volume of integrated circuit is reduced in big degree, on the other hand, multiple units are integrated on same master control IC also in very great Cheng The interconnection efficiency between each unit is improved on degree, reduces the power consumption of integrated circuit.Using MT2503 as master in the application IC is controlled, uses HS8298S to reduce radio-frequency power consumption as matched radio frequency chip, and form it using MXDLN16U_DS LNA circuit improves the positioning accuracy of mould group entirety.

This mould group can tetra- frequency ranges of automatic searching GSM850, EGSM900, DCS1800 and PCS1900 MHz；Its GPRS number According to downlink transfer maximum up to 85.6kbps, GPRS data upstream transmission: maximum 85.6kbps；Have echo cancellation and makes an uproar Sound inhibits function, supports BT3.0, embeds ICP/IP protocol, supports to assist commonly used in the PAP (Password Authentication Protocol) of PPP connection View.Support Packet Broadcast Control CHannel (PBCCH), support unstructured supplementary data traffic (USSD), and support GPS, GLONASS, GALILEO positioning system.It can be widely applied to the fields such as wearable device, pet tracking and property tracking.

Include support plate the invention also discloses a kind of pcb board of the GPRS mould group of high accuracy positioning, in the PCB plate with A plurality of electronic components, the setting member pad of electronic component is corresponded on support plate, and a plurality of electronic components pass through Component pads are welded on support plate, and a plurality of electronic components pass through pad and are electrically connected with support plate；A plurality of electronics member devices Part is each attached on the upper surface of support plate.A plurality of electronic components are corresponding with modular circuit, and a plurality of electronic components are equal It is fixed on the upper surface of support plate, on the one hand facilitates manufacturer encapsulation module, on the other hand also facilitate user will be packaged The insertion of mould group needs in the industry spot of this mould group, guarantees that mould group firmly installs.

A plurality of stamp holes are offered on support plate edge, a plurality of stamp holes are symmetrically distributed in edge everywhere in support plate. Setting stamp hole facilitates scoreboard, and operator easily cuts pcb board using stamp hole.

The pcb board further includes having SMT patch, and SMT patch is fixed on the bottom of support plate, and is provided with plural number on SMT patch A pin, a plurality of pins are symmetrically distributed on the lower surface of support plate.

The pcb board further includes having shielding case, and shielding case is located on the upper surface of support plate, and shielding case is enclosed with support plate The confined space of electronic component is accommodated, electronic component is accommodated in the confined space.Shielding case is using physical isolation hand Section, can effectively shield external interference, avoid clutter from entering and interfere circuit in circuit, guarantee that modular circuit works normally.

Shielding case pad is additionally provided on support plate, the setting of shielding case pad is a plurality of, and a plurality of shielding case pads are fixed On support plate, and a plurality of shielding case pads are symmetrically distributed in the edge of support plate, and shielding case pad is fixedly connected with shielding case. A plurality of shielding case pads are set, and operator can utilize shielding case pad by shielding case accurate positioning, even in encapsulation module It connects and is securely fixed on support plate, avoid shielding case from shaking in actual use in communication module group and fall off, enhancing mould group is whole Reliability of structure.

After the pcb board of this mould group determines version, the physical size of mould group: 17.6*15.7*2.3mm, mould group are arranged 68 and draw Foot provides for user: two-way serial ports (three line serial ports and global functional serial port all the way all the way) is supported from 1200bps to 115200bps Auto-baud-detect function, support to meet the serial port function of GSM07.10 agreement.Support RTS/CTS hardware flow control, And flow control function can be turned on or off by software；USB interface all the way, convenient for user's debugging, downloading software；All the way USB interface, convenient for user's debugging, downloading software；Audio interface all the way is exported comprising microphone input and receiver；It is multiple can The universal input/output interface of programming；SIM card interface all the way, it is convenient to be connect with SIM card.

The advantage of the utility model is: compared with the prior art, in communications module provided by the utility model, penetrating The modular circuit of frequency module and Internet of Things main control module composition embeds ICP/IP protocol, and industrial field data is facilitated to communicate, and In the pcb board of this communications module, all electronic components are each attached on the upper surface of support plate, user can be facilitated to fix this mould Group.

Detailed description of the invention

Fig. 1 is the circuit structure block diagram of the GPRS mould group of the utility model high accuracy positioning.

Fig. 2 is that low noise amplification module and Internet of Things main control module connect in the GPRS mould group of the utility model high accuracy positioning The circuit diagram connect.

Fig. 3 is that low noise amplification module and Internet of Things main control module connect in the GPRS mould group of the utility model high accuracy positioning The partial enlarged view of part A in the circuit diagram connect.

Fig. 4 is that low noise amplification module and Internet of Things main control module connect in the GPRS mould group of the utility model high accuracy positioning The partial enlarged view of part A in the circuit diagram connect.

Fig. 5 is that low noise amplification module and Internet of Things main control module connect in the GPRS mould group of the utility model high accuracy positioning The partial enlarged view of part A in the circuit diagram connect.

Fig. 6 is the distribution schematic diagram of pad on the support plate of the pcb board of the GPRS mould group of the utility model high accuracy positioning.

Fig. 7 is the overall structure diagram of the pcb board of the GPRS mould group of the utility model high accuracy positioning.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

Referring to shown in Fig. 1-6, the utility model provides a kind of GPRS mould group of high accuracy positioning, the circuit of the communications module In include radio-frequency module and Internet of Things main control module, radio-frequency module is connect with Internet of Things main control module, Internet of Things main control module In include power supply unit, audio unit, baseband signal processing unit, data processing unit and input-output unit, radio frequency mould Block is connect by baseband signal processing unit with data processing unit, baseband signal processing unit, audio unit and input and output Unit is connect with data processing unit, and power supply unit is connect with audio treatment unit, and power supply unit is also connect with radio-frequency module.

It include radio frequency chip U2, the concrete model of radio frequency chip are as follows: HS8298S in radio-frequency module；Internet of Things master control mould Each unit is integrated on same master control ICU21 in block, the concrete model of master control ICU21 are as follows: MT2503.

It is additionally provided with low noise amplification module in the modular circuit, includes low noise amplification core in low noise amplification module Piece U17, the concrete model of the chip are as follows: MXDLN16U_DS, and the chip is connect with master control ICU21.

In this mould group, each unit in Internet of Things main control module is integrated on same master control ICU21, on the one hand The volume of integrated circuit is largely reduced, on the other hand, multiple units are integrated on same master control IC also very The interconnection efficiency between each unit is improved in big degree, reduces the power consumption of integrated circuit.Make in the application using MT2503 For master control ICU21, HS8298S is used to reduce radio-frequency power consumption as matched radio frequency chip U17, and uses MXDLN16U_ DS forms its LNA circuit, improves the positioning accuracy of mould group entirety.

Include support plate 1 the invention also discloses a kind of pcb board of the GPRS mould group of high accuracy positioning, in the PCB plate with A plurality of electronic components 2 correspond to the setting member pad (not shown) of electronic component 2, a plurality of electricity on support plate 1 Sub- component 2 is welded on support plate 1 by component pads, and a plurality of electronic components 2 are electrically connected by pad with support plate 1 It connects；A plurality of electronic components 2 are each attached on the upper surface of support plate 1.A plurality of electronic components 2 are corresponding with modular circuit, And a plurality of electronic components 2 are each attached on the upper surface of support plate 1, on the one hand facilitate manufacturer encapsulation module, another party Face also facilitates user to need packaged mould group insertion in the industry spot of this mould group, guarantees that mould group firmly installs.

A plurality of stamp holes 11 are offered on 1 edge of support plate, a plurality of stamp holes 11 are symmetrically distributed in side everywhere in support plate 1 At edge.Setting stamp hole 11 facilitates scoreboard, and operator easily cuts pcb board using stamp hole 11.On the other hand, stamp is set Hole can also guarantee that module is reliably connected with mainboard with the one-to-one structure of pin, and prevent vibration from causing module and mainboard empty Weldering, fully ensures that the function connects of this communications module and mainboard, it is ensured that this communications module radiofrequency signal reliability and stability.

RF test wrapper is set on support plate, and RF test wrapper is fixed on support plate, and the RF test wrapper is conducted with support plate.? RF test wrapper is set on support plate, RF radio frequency testing is carried out to molding pcb board using the test wrapper after support plate molding, is surveyed for radio frequency Test point provides reliable ground loop, so that radiofrequency signal is sufficiently shielded, comprehensive survey simultaneously debugs GSM signal.

The pcb board further includes having SMT patch, and SMT patch is fixed on the bottom of support plate 1, and is provided with plural number on SMT patch A pin 3, a plurality of pins 3 are symmetrically distributed on the edge of support plate 1；The quantity and its position and answer that a plurality of pins 3 are arranged The quantity and its position that several stamp holes 11 open up correspond.On the other hand, stamp hole 11 is set and pin is one-to-one Structure can also guarantee that module is reliably connected with mainboard, and prevent vibration from causing this communications module and mainboard rosin joint, fully ensure that The function connects of this communications module and mainboard, it is ensured that this communications module radiofrequency signal reliability and stability.

RF test wrapper 13 is set on support plate, and RF test wrapper 13 is fixed on support plate 1, and the RF test wrapper 13 and support plate 1 It conducts.RF test wrapper 13 is set on support plate 1, RF radio frequency is carried out to molding pcb board using the test wrapper after the molding of support plate 1 Test, provides reliable ground loop for radio frequency testing needle, so that radiofrequency signal is sufficiently shielded, comprehensive survey simultaneously debugs GSM signal.

The pcb board further includes having shielding case 4, and shielding case 4 is located on the upper surface of support plate 1, and shielding case 4 is enclosed with support plate 1 The confined space for forming accommodating electronic component 2 is closed, electronic component 2 is accommodated in the confined space.Shielding case 4 uses object Isolating means are managed, external interference can be effectively shielded, avoid clutter from entering and interfere circuit in circuit, guarantee the normal work of modular circuit Make.

Shielding case pad (not shown) is additionally provided on support plate 1, the setting of shielding case pad is a plurality of, a plurality of shielding case welderings Disk is each attached on support plate 1, and a plurality of shielding case pads are symmetrically distributed in the edge of support plate 1, shielding case pad and shielding Cover 4 is fixedly connected.A plurality of shielding case pads are set, and operator can utilize shielding case pad by shielding case in encapsulation module 4 accurate positionings are fixed on support plate 1 with being connected firmly, and avoid shielding case 4 from shaking in actual use in communication module group de- It falls, enhances the reliability of structure of mould group entirety.

The advantage of the utility model is: compared with the prior art, in communications module provided by the utility model, penetrating The modular circuit of frequency module and Internet of Things main control module composition embeds ICP/IP protocol, and industrial field data is facilitated to communicate, and In the pcb board of this communications module, all electronic components 2 are each attached on the upper surface of support plate 1, user can be facilitated fixed originally Mould group.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle Within the scope of shield.

Claims

It include radio-frequency module and Internet of Things master control mould in the circuit of the communications module 1. a kind of GPRS mould group of high accuracy positioning Block, the radio-frequency module are connect with Internet of Things main control module, which is characterized in that include power supply in the Internet of Things main control module Unit, audio unit, baseband signal processing unit, data processing unit and input-output unit, the radio-frequency module pass through base Band signal processing unit is connect with data processing unit, the baseband signal processing unit, audio unit and input-output unit Connect with data processing unit, the power supply unit is connect with audio treatment unit, the power supply unit also with radio-frequency module Connection.
2. the GPRS mould group of high accuracy positioning as described in claim 1, which is characterized in that include to penetrate in the radio-frequency module Frequency chip, the concrete model of the radio frequency chip are as follows: HS8298S；Each unit is integrated in together in the Internet of Things main control module On one piece of master control IC, the concrete model of master control IC are as follows: MT2503.
3. the GPRS mould group of high accuracy positioning as claimed in claim 2, which is characterized in that be additionally provided in the modular circuit low Noise amplification module includes low noise amplification chip, the concrete model of the chip in the low noise amplification module are as follows: MXDLN16U_DS, and the chip is connect with master control IC.
It include support plate and a plurality of electronic components in the pcb board 4. a kind of pcb board of the GPRS mould group of high accuracy positioning, The setting member pad of electronic component is corresponded on the support plate, a plurality of electronic components are welded on by component pads On support plate, and a plurality of electronic components pass through pad and are electrically connected with support plate；It is characterized in that, a plurality of electronics member devices Part is each attached on the upper surface of support plate.
5. the pcb board of the GPRS mould group of high accuracy positioning as claimed in claim 4, which is characterized in that on the support plate edge A plurality of stamp holes are offered, a plurality of stamp holes are symmetrically distributed in edge everywhere in support plate.
6. the pcb board of the GPRS mould group of high accuracy positioning as claimed in claim 4, which is characterized in that be arranged on the support plate RF test wrapper, the RF test wrapper are fixed on support plate, and the RF test wrapper is conducted with support plate.
7. the pcb board of the GPRS mould group of high accuracy positioning as claimed in claim 5, which is characterized in that the pcb board further includes having SMT patch, the SMT patch is fixed on the bottom of support plate, and a plurality of pins are provided on SMT patch, described a plurality of to draw Foot is symmetrically distributed on the lower surface of support plate.
8. the pcb board of the GPRS mould group of high accuracy positioning as claimed in claim 5, which is characterized in that the pcb board further includes having Shielding case, the shielding case are located on the upper surface of support plate, and the shielding case and support plate are enclosed accommodating electronic component Confined space, the electronic component is accommodated in the confined space.
9. the pcb board of the GPRS mould group of high accuracy positioning as claimed in claim 7, which is characterized in that also set on the support plate It is equipped with shielding case pad, the shielding case pad setting is a plurality of, and a plurality of shielding case pads are each attached on support plate, and A plurality of shielding case pads are symmetrically distributed in the edge of support plate, and the shielding case pad is fixedly connected with shielding case.