CN201654238U - Multiple-constellation integrated CORS base station-dedicated receiver - Google Patents

Abstract

The utility model provides a multiple-constellation integrated CORS base station-dedicated receiver, which comprises a power functional module, a GPS receiver module, a GLONASS receiver module, a CPU, a control circuit module, a storage functional module, an external interface module and a network communication module, wherein the power functional module is used for supplying power for the receiver, and the GPS receiver module and the GLONASS receiver module are connected with the CPU and the control circuit module; and the CPU and the control circuit module are respectively connected with the storage functional module, the external interface module and the network communication module. The utility model adopts the CORS base station receiver to realize the high-precision GNSS measuring system, the internal GPS module adopts a high-performance GPS receiver plate, the GLONASS module adopts a high-performance GLONASS receiver plate, the tracking performance is superior, and the whole machine is highly sealed, so the waterproof, dustproof, shockproof and low power consumption function is achieved.

Description

Special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station)

Technical field

The utility model relates to a kind of multi-constellation integrated network differential base station network digital investigation apparatus, belongs to high-precision GNSS measuring system technical field.

Background technology

At present, as measuring GLONASS (Global Navigation Satellite System) (Global Navigation Satellite System, GNSS) receiver current situation technically is as follows:

(1) GLONASS (Global Navigation Satellite System) has comprised GPS of USA, and the existing market major part is great majority with the receiver that depends on single constellation also.

(2) work unit mainly utilizes paired GPS receiver, and one is used as base station, and another utilizes the radio station to broadcast differential correcting information as movement station, carries out the data acquisition of field investigation by single base station locator meams.10 kilometers of operating distances, bearing accuracy, need the professional and technical personnel to choose reference mark, amount calculation coordinate, and arrange the special messenger to set up, keep an eye on the base station in the practical work process along with base length increases decay fast.And general built-in terminal does not have the function of providing services on the Internet.

Development along with the multi-constellation navigation system, the user improves constantly the requirement of compatibility between global position system and interoperability, single navigational system more and more can not satisfy the demand of people to navigation performance, wish still can utilize the signal of other constellations to realize the location under the situation that the signal of certain satellite system is interfered.Thereby make the single constellation of GPS change the compatible mechanism of many constellations, and obtaining general approval in the world, satellite navigation system has been irreversible general trend to the development of multipolarization standard.Based on the drawback of original single base station locator meams,, base station has been proposed the requirement of new networking, unmanned and Long-distance Control in addition from making things convenient for the angle of operation and maintenance.

Therefore, the new demand to network differential base station network digital investigation apparatus also goes out thereupon:

1. except the support to GPS, change the single constellation of GPS is compatible many constellations, realizes the interoperability to different global position systems.

2. single base station expends the shortcoming of excess resource, can consider to realize technology such as the networking of built-in terminal and Long-distance Control, thereby realize requirements such as unmanned and Long-distance Control.

Summary of the invention

Goal of the invention:

The utility model is in order to solve the compatibility between many global position systems and the problem of interoperability, makes a plurality of global position systems can common application, proposed multi-constellation integrated base station special receiver.

Technical scheme:

The utility model adopts following technical scheme for achieving the above object:

A kind of special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) comprises power supply function module, GPS receiver module, GLONASS receiver module, CPU and control circuit module, memory function module, external interface module, network communication module; Wherein said power supply function module is used for power supply, and GPS receiver module, GLONASS receiver module are connected with CPU and control circuit module; CPU and control circuit module are connected with memory function module, external interface module, network communication module respectively.

Further, the external interface module of special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) of the present utility model also comprises power interface, serial ports, USB interface.

Further, the network communication module of special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) of the present utility model comprises N network interface, and N is a natural number.

Further, the GPS receiver module of special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) of the present utility model comprises GPS dash receiver and NOVATEL GPS dash receiver, after wherein GPS dash receiver, NOVATEL GPS dash receiver connect successively, be connected with CPU and control circuit module.

Further, the GLONASS receiver module of special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) of the present utility model is a GLONASS OEM dash receiver.

Beneficial effect:

1, the utility model adopts high precision double frequency GPS receiver, technical grade three anti-fuselages, can external digital atmospherium, all unit of needing of operation base station continuously such as choking coil antenna and communications;

2, the utility model can receive GPSL1/L2 two-frequency signal, GLONASS signal, compatible many constellation systems;

3, the utility model can realize that sampling rate can be provided with for the collection and the record of original observed data, weather data (air pressure, temperature and relative humidity);

4, built-in 2G of the utility model even higher super large physical memory, and data are in fact reached server backup, guarantee the security of data recording;

5, the utility model possesses the High Speed IP interface, supports data transmission, status monitoring and the parameter setting of Ethernet mode;

6, the utility model is supported unmanned by network communication module is set, and can long-rangely finish all operations setting;

7, the utility model data-transformation facility of network enabled and serial ports dual mode simultaneously, Network Transmission supports that breakpoint reconnects, and interrupts all can reconnecting automatically with interior network in two hours, satisfies long-term, stable, the demand of operation continuously of CORS base station receiver;

8, main frame self check can be carried out self check to system's completeness before the operation of receiver main frame, helps the user in time to grasp each control running status of main frame;

9, user authority management:, allow the user to download, manage, be provided with differentiated control to receiving data according to the user right rank; Multi-user's while data download does not influence the CORS base station receiver and normally moves.

Description of drawings

Fig. 1 is system's composition diagram of CORS base station receiver of the present utility model.

Fig. 2 is the workflow diagram of special receiver of the present utility model.

Embodiment

The utility model is the high-precision GNSS measuring system that is realized by CORS (move satnav service colligate system continuously, Continuous OperationalReference System is abbreviated as CORS) base station receiver.Built-in GPS receiver module adopts high-performance GPS dash receiver, and the GLONASS receiver module adopts high-performance GLONASS dash receiver, and tracking performance is superior.The complete machine high-seal, waterproof and dustproof, shockproof, low-power consumption.The overall framework of CORS base station receiver:

1, general structure design

(1) satellite-signal is followed the tracks of: adopt GPS receiver module, the GLONASS receiver module of ripe dependable performance, when requiring to adopt the coupling antenna to receive data, provide relevant test data again, use for subsequent treatment.

(2) main logic unit: Fig. 1 is the basic composition of system.

(3) data storage part: adopt the storage space of built-in 2G at least, recording data files.

(4) network connecting part: the connection differential data is exported in real time, long-range reference station, telefile download, the scalable host version of being provided with, and uses network interface to transmit the weather data of receiving.

2, technical indicator

(1) GNSS observation data type and coded format: require to support the original binary data record of 1Hz left and right sides frequency, same and another GPS (GLONASS) serial ports speed about with 1Hz is exported raw data, original almanac data simultaneously.

(2) digital coding and output format: the data type that requires to support has numerous types of data such as RTCM2.3, RTCM3.0, RTCA, CMR, CMR+.

(3) network communication: require communication mode, support HTTP, NTRIP agreement, support ICP/IP protocol to carry out data transmission based on Ethernet.

(4) data storage: main frame needs built-in 2G or bigger storage space, and after the recording data files, main frame is sent to data the data server of FTP or relaying automatically, and the data that keep a couple of days in machine are as backup.

(5) power supply and power consumption: adopt the built-in lithium battery group, power consumption requires to be lower than 8W, and outage back continuous operating time was supported the direct supply of external power supply 10～25V more than 10 hours.

(6) operated from a distance and control: the embedded (SuSE) Linux OS of CORS base station receiver, receiver end need not to be equipped with computer server, uses netting twine the CORS base station receiver to be connected long-range all operations setting to the CORS base station receiver with network.

(7) system's completeness self-checking function: automatically the host computer system completeness is carried out self check when the CORS base station receiver need be realized starting shooting, main panel need be provided with pilot lamp information such as CORS base station receiver power-supply system, GPS chip running status, internal storage state, data communication link state are shown, the demonstration green light represents that running status is normal, self check is passed through during self check, and operation exception shows the red light caution.

Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated:

As shown in Figure 1, special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) of the present utility model comprises power supply function module, GPS dash receiver, NOVATEL GPS dash receiver, GLONASS OEM dash receiver, CPU and control circuit module, memory function module, external interface module, network communication module; Wherein the power supply function module is used for powering to receiver, and the GPS dash receiver is connected with CPU and control circuit module with after NOVATEL GPS dash receiver is connected, and GLONASS OEM dash receiver is connected with CPU and control circuit module; CPU and control circuit module are connected with memory function module, external interface module, ethernet module respectively.External interface comprises power interface, serial ports, USB interface; Network communication module comprises several network interfaces.

As shown in Figure 2, behind the system boot, at first carry out the self check of equipment completeness, and detect the network connectivity and whether connect.After errorless, utilize the built-in network service that provides of built-in terminal, whether operated from a distance input control order, built-in terminal detect receives effective operational order.When receiving effective instruction,, original observed data is carried out digital coding from GPS receiving equipment (GLONASS receiving equipment) input original observed data.After having finished coding, data are compressed processing so that follow-up storage.By communication module the packed data of storing is carried out data distribution, the network service that provides by built-in terminal returns to remote operator with data result.Remote operator can select to accept the data of which receiving equipment.

The detailed design and the engineering of CORS base station receiver are achieved as follows:

1, power unit

The main composition of power unit adopts a slice DC-DC chip TPS5430DDA (U15), two charging management chip BQ24103 (U22, U23), some transistor logic control circuits, battery interface CON13, CON14, and charged state pilot lamp control circuit; Its function mainly is switching on and shutting down, the control that resets, and the power supply of battery charging management and battery and external power is switched.Power management partly has two battery interfaces in addition, can external two lithium batteries, and cell voltage is between DC 7.2V-8.4V.The external power input voltage is DC12V.

2, main logic unit

The E661 main control unit can be divided on function: power supply function module, master cpu circuit part, GPS module, GLONASS module and control function part, ethernet module and memory management functions module, detail drawing is seen figure one.

3, communications portion

E661 realizes data communication according to each functional module.Divide according to module, E661 mainly can be divided into following several module:

(1) CPU uses 18.432MHz as the shake AT91ASM9260_BGA217 of clock of oikocryst, and the PLLRCA that uses external crystal-controlled oscillation clock 32.768KHz and RC oscillatory circuit to form imports as clock.OSCSEL pin conduct clock selecting is at a slow speed gone into, and low level uses inner RC oscillatory circuit to produce the clock of 32.768KHz; During high level, use outside 32.768KHz clock.

(2) SDRAM: the capacity of two 256Mbits compositions is the SDRAM of 64MB.The integrated sdram controller of AT91ASM9260 is is directly read and write SDRAM.

(3) Sandisk INAND Flash: use the Sandisk INAND Flash of 1G, the SD_PER_ON/OFF that sent by CPU of powering on realizes that through triode and MOSFET logic control the SD card normally powered on when this signal was high level, the power down of low level SD card.

(4) Dataflash: the AT45DB642D-CNU that uses 64Mbit.MCCDB is as the input pin of Dataflash, and MCDB0 exports as DATAFLASH.SPIO_SPCK is the data clock control pin of DATAFLASH; NRST is the reset pin of DATA FLASH, and low level enables; Data_nCS_out sheet selected control system is finished low level by CPLD and is enabled.

(5) network chip: DP83848I.Configuration pin by CPU is directly controlled, and network chip directly links to each other with the network FISHER head of front panel by network transformer again.

The GPS receiver module that GPS module: E661 uses is NovAtel, uses card extender to realize the conversion of interface.The GLONASS module of using is a GLONASS OEM dash receiver.

(6) CPLD: adopting model is the CPLD of LC4064V_T48.

4, data storage part

5, network connecting part

The power supply control of network portion is that the NET_PWR_CTL control transformation that the 3.3V of system exports through CPU is NET3V3 output; NET3V3 is converted to E3V3 output through the LC filter network again.

Claims (5)

1. a special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) is characterized in that: comprise power supply function module, GPS receiver module, GLONASS receiver module, CPU and control circuit module, memory function module, external interface module, network communication module; Wherein said power supply function module is used for power supply, and GPS receiver module, GLONASS receiver module are connected with CPU and control circuit module; CPU and control circuit module are connected with memory function module, external interface module, network communication module respectively.

2. special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) according to claim 1 is characterized in that: described external interface module also comprises power interface, serial ports, USB interface.

3. special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) according to claim 1 is characterized in that: described network communication module comprises N network interface, and N is a natural number.

4. special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) according to claim 1, it is characterized in that: described GPS receiver module comprises GPS dash receiver and NOVATEL GPS dash receiver, after wherein GPS dash receiver, NOVATEL GPS dash receiver connect successively, be connected with CPU and control circuit module.

5. special receiver for multi-constellation integrated CORS (Continuously Operating Reference Station) according to claim 1 is characterized in that: described GLONASS receiver module is a GLONASS OEM dash receiver.

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