CN104008640A - Wireless data collecting terminal - Google Patents
Wireless data collecting terminal Download PDFInfo
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- CN104008640A CN104008640A CN201410274095.6A CN201410274095A CN104008640A CN 104008640 A CN104008640 A CN 104008640A CN 201410274095 A CN201410274095 A CN 201410274095A CN 104008640 A CN104008640 A CN 104008640A
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Abstract
The invention discloses a wireless data collecting terminal which comprises a sensor and a terminal main control computer. The wireless data collecting terminal is characterized in that the terminal main control computer comprises a main control computer circuit board which comprises an embedded microprocessor module, an FDD-LTE communication module, a power management module and a child node interface module; the wireless data collecting terminal further comprises a child node adapter connected with the child node interface module, the child node adapter is in data communication with the sensor and a wireless sub gateway respectively. According to the technical scheme, compared with the prior art, the wireless data collecting terminal has the advantages that the universality is high, and the information exchange speed is high.
Description
Technical field
The present invention relates to data acquisition technology field, particularly relate to radio-type data collection station.
Background technology
Wireless data acquisition system, as a kind of emerging data acquisition means, is expanded rapidly its suitable application area with its irreplaceable convenience and movability.The most representative is current widely used vehicle GPS anti-theft tracking system and be dispersed throughout the environment parameter monitoring system in city.Wireless data acquisition system is by radio-type data collection station in general, and data server and client software three parts form, and forms the Data-Link of " gathering-storage-inquiry ".Wherein radio-type data collection station is the producer of data, is most important ingredient in system.The design of current data collection station mostly is special designs, as current air-quality monitoring system, wireless data terminal connects corresponding air mass sensor, with certain frequency, record the physical and chemical parameter data of every air of current measuring point, and by wireless telecommunications means such as GSM/GPRS, data upload data server is inquired about for user.Along with the increase in demand of the whole society to data acquisition, multi-functional to data collection station, multiparameter, at a high speed, the requirement of real-time improves day by day, and the uplink speed that is limited to and the wireless channel stability of current Mobile data acquisition terminal are only suitable for monitoring the parameter that some slowly change.In addition, the design of customizations also causes data collection station to need again to do once complete development to each demand, and after scheme maturation, if need to increase monitoring parameter or other function in practical application, often needs system to redesign.At present, universalization to have the wireless acquisition terminal of extensibility more rare.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of radio-type data collection station is provided.
The technical scheme that the present invention takes for the technical matters existing in solution known technology is:
A radio-type data collection station, comprises sensor and terminal main control computer; It is characterized in that: described terminal main control computer comprises:
Main control computer circuit board, described main control computer circuit board comprises embedded microprocessor module, FDD-LTE communication module, power management module and child node interface module; Wherein:
Described embedded microprocessor module is provided with internal memory and the FLASH chip for acquisition terminal storage data and working procedure; In described embedded microprocessor module, be provided with the peripheral module that multiple serial, parallel bus expanding system are used, and draw equipment debugging interface;
Described FDD-LTE communication module is connected with embedded microprocessor module by parallel or high-speed serial bus, and the antennal interface of FDD-LTE communication module is connected with the antenna of realizing image data high speed unofficial biography;
Described child node interface module adopts CAN bus transceiver chip to realize the conversion of CAN bus interface level, and selects corresponding CAN bus MAC layer interface chip according to the resource situation of microprocessor, realizes the CAN bus communication with subordinate's child node;
Described radio-type data collection station also comprises the child node adapter being connected with child node interface module, and described child node adapter is put row data communication into sensor, wireless sub network respectively.
Further: described antenna is connected with main control computer antennal interface by 50 ohm of radio frequency coaxial-cables.
Described antenna is placed on the shell of terminal main control computer, and described antenna is a kind of in whiplike omnidirectional antenna or dull and stereotyped directional antenna.
Advantage and good effect that the present invention has are:
1. bidirectional high speed: acquisition target is adopted to multichannel CAN bus transfer, more than single channel transfer rate 1Mbps; Image data is uploaded and is adopted FDD-LTE communication private network to transmit, and more than transfer rate 100Mbps, can carry abundanter image data kind and have good real-time.
2. gather child node infinite expanding: the communication node in each road CAN bus acquisition channel all adopts CAN2.0B consensus standard, can provide 29 device addresses to support, the in the situation that of bus-powered permission, can infinite expanding gather the number of child node.
3. high speed real-time radio can be reached easily interconnected: the scheme of uploading based on FDD-LTE communication private network can realize wireless point to point connect in private network easily, can break away from the deficiency that available data acquisition system must rely on public network server.
4. the existing image data source (as sensor) of adaptive different protocol standards easily: in system, child node is all furnished with intelligent communication control module, on software and hardware, slightly doing change can complete variety classes, the adaptation in image data of different nature source, the greatly versatility of elevator system.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the preferred embodiment of the present invention;
Fig. 2 is the partial circuit diagram of the preferred embodiment of the present invention, is mainly used in the circuit structure of display terminal main control computer;
Fig. 3 is the partial circuit diagram of the preferred embodiment of the present invention, is mainly used in showing the circuit structure of child node interface module.
Embodiment
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, Fig. 2 and Fig. 3, a kind of radio-type data collection station, comprise a plurality of sensors, terminal main control computer and child node adapter for gathering various signals; Wherein: described terminal main control computer is core component of the present invention;
Described terminal main control computer comprises:
Main control computer circuit board, main control computer circuit board is the core component of terminal main control computer, described main control computer circuit board comprises embedded microprocessor module, FDD-LTE communication module, power management module and child node interface module; Wherein:
Described embedded microprocessor module is provided with internal memory and the FLASH chip for acquisition terminal storage data and working procedure; In described embedded microprocessor module, be provided with the peripheral module that multiple serial, parallel bus expanding system are used, and draw equipment debugging interface; Embedded microprocessor module in this specific embodiment adopts low-power consumption, and high performance embedded microprocessor chip is realized,
Described power management module is accepted outside 12V stabilized voltage supply input, and modules in terminal main control computer is carried out respectively to voltage stabilizing power supply, possesses low power consumption control ability simultaneously.According to the voltage request of each way node, after voltage transitions, introduce respectively each road CAN bus power supply system, and possess current/voltage monitoring, turn-off protection and power fail reporting functions;
Described FDD-LTE communication module is connected with embedded microprocessor module by parallel or high-speed serial bus, and the antennal interface of FDD-LTE communication module is connected with the antenna of realizing image data high speed unofficial biography;
Described child node interface module adopts CAN bus transceiver chip to realize the conversion of CAN bus interface level, and selects corresponding CAN bus MAC layer interface chip according to the resource situation of microprocessor, realizes the CAN bus communication with subordinate's child node;
Described radio-type data collection station is connected with child node adapter, and described child node adapter is put row data communication into sensor, wireless sub network respectively; Child node adapter is mainly realized with the software and hardware of target data source adaptive, protocol conversion, and the CAN bus communication function with terminal main control computer, has child node power management and fault finding function concurrently.Child node adapter core is low cost low-power consumption 32 MCU that possess CAN bus MAC layer communications peripheral, by writing different firmware programs, can adaptive different data source, include but not limited to that Intelligence sensor (adopts I2C, SPI, the digital interfaces such as UART are carried out the sensor of data reading), traditional analog amount, pulse output transducer, Miniaturized Communications child node (Zigbee telegon or similar low-consumption wireless communication module) etc.Child node adapter volume is little, together with can being encapsulated into data source, also can encapsulate voluntarily, by cable connection data source and terminal main control computer
As preferably, according to the requirement of the FDD-LTE communication module adopting, match the special communication antenna of SMA or N interface, described antenna is connected with main control computer antennal interface by 50 ohm of radio frequency coaxial-cables.
As preferably, in order to promote communication distance, described antenna is placed on the shell of terminal main control computer, and described antenna is a kind of in whiplike omnidirectional antenna or dull and stereotyped directional antenna.
In order to set forth better principle of work of the present invention, provide a kind of typical scenario of applying concrete wireless acquisition system design of the present invention below.
Bus environment inside car transport condition monitoring system
Native system can be monitored environmental parameter in the compartment in bus driving process, comprise temperature (3 measuring points), relative humidity, in-car air quality (floating dust), compartment internal vibration (acceleration), CAN sensor network in simultaneously can monitoring car, reads the current transport condition parameter of vehicle.These parameters can be collected with different frequencies, and be recorded in the nonvolatile memory of data collection station, and these data are uploaded to the server that is positioned at private network in real time simultaneously, supplies real-time query or have access to afterwards.
The terminal main control computer design of this programme is as follows:
Wireless module has adopted ME3760 multimode LTE communication module, supports the access service of FDD-LTE Band7 high-speed data.Module provides two IPX antenna sockets, adopts IPX to turn N50 ohm coaxial cable and connects major-minor antenna, picks out outside terminal casing.The access of ME3760 module local data and power supply adopt mini PCI-Express interface, thereby are docked and build high-speed data channel with main control MCU by this high-speed interface.
Main control microprocessor model is AM3871, carries 512MB LPDDR-400 internal memory and 2G eMMC storer for operation and the storage of operating system and program.
AM3871, by the PCI-Express2.0 interface carrying, is configured to HOST pattern and is connected with ME3760LTE communication module, and interface has the serial transmitting-receiving speed of 5Gbps, can complete the high speed forward of data and steering order.
AM3871 carries SATA interface, from anti-vibration angle, considers, data terminal storage adopts solid state hard disc, any brand and model that solid state hard disc can be buied for market, and there is SATA interface.SATA interface has the message transmission rate of 3Gbps, can deal with writing and reading of short time big data quantity, and solid state hard disc has larger capacity, can realize this locality storage of more data.
AM3871 carries two-way CAN bus MAC, is used for building independently Sensor monitoring interface of two-way, and the PHY of CAN bus adopts SN65HVD230 to complete level conversion and Transmit enable work as transceiver.
The 12/24V direct supply that the power acquisition of terminal main control computer carries with bus, adopts general power management scheme design, and access power supply to 5V, is supplied with other circuit on AM3871 power source special managing chip and plate through switching power source chip TPS5430 voltage stabilizing.At two-way CAN bus sensors interface design power supply monitoring system, the TPS2480 of employing based on I2C interface, AM3871 monitors the electric power thus supplied (real-time voltage electric current) of all child nodes of each road CAN bus by I2C interface monitoring, and disconnection power supply is in time guaranteed can not have an accident when power supply short circuit fault appears in bus.
According to the character of child node and data volume, first via CAN bus connects Temperature Humidity Sensor 1, air mass sensor, compartment vibration transducer, Temperature Humidity Sensor 2, Temperature Humidity Sensor 3 in turn; The second road CAN bus directly connects the OBD interface that passenger vehicle ECU provides, and reads the travel condition data of passenger vehicle by the CAN bus of OBD interface.
The design of child node adopts low-cost MCU, and model is STM32F103RBT6, and the CAN bus MAC carrying by MCU realizes CAN bus communication, and CAN bus PHY is used SN65HVD230 to complete level conversion and Transmit enable work as transceiver equally.
Temperature Humidity Sensor adopts SHT15, and the I2C interface by MCU is attached thereto, and reads original humiture data, in single-chip microcomputer, by computing, compensate the humiture data after output calibration afterwards, sends to terminal main control computer.
Compartment vibration transducer adopts ADXL615, and MCU is attached thereto by SPI interface, reads after acceleration information, carries out obtaining amplitude and instantaneous vibration frequency data after simple filtering processing in MCU, sends to terminal main control computer.
Air mass sensor adopts GP2Y1010AU0F, this sensor is the sensor of traditional analog output, MCU converts the DC analogue quantity that represents dust intensity to digital quantity by the analog to digital converter carrying, the pm2.5 concentration ppm value that obtains reacting air quality after converting, sends to terminal main control computer.
Above embodiments of the invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the present patent application scope and improvement etc., within all should still belonging to patent covering scope of the present invention.
Claims (3)
1. a radio-type data collection station, comprises sensor and terminal main control computer; It is characterized in that: described terminal main control computer comprises:
Main control computer circuit board, described main control computer circuit board comprises embedded microprocessor module, FDD-LTE communication module, power management module and child node interface module; Wherein:
Described embedded microprocessor module is provided with internal memory and the FLASH chip for acquisition terminal storage data and working procedure; In described embedded microprocessor module, be provided with the peripheral module that multiple serial, parallel bus expanding system are used, and draw equipment debugging interface;
Described FDD-LTE communication module is connected with embedded microprocessor module by parallel or high-speed serial bus, and the antennal interface of FDD-LTE communication module is connected with the antenna of realizing image data high speed unofficial biography;
Described child node interface module adopts CAN bus transceiver chip to realize the conversion of CAN bus interface level, and selects corresponding CAN bus MAC layer interface chip according to the resource situation of microprocessor, realizes the CAN bus communication with subordinate's child node;
Described radio-type data collection station also comprises the child node adapter being connected with child node interface module, and described child node adapter is put row data communication into sensor, wireless sub network respectively.
2. radio-type data collection station according to claim 1, is characterized in that: described antenna is connected with main control computer antennal interface by 50 ohm of radio frequency coaxial-cables.
3. radio-type data collection station according to claim 2, is characterized in that: described antenna is placed on the shell of terminal main control computer, and described antenna is a kind of in whiplike omnidirectional antenna or dull and stereotyped directional antenna.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410274095.6A CN104008640A (en) | 2014-06-19 | 2014-06-19 | Wireless data collecting terminal |
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| CN201410274095.6A CN104008640A (en) | 2014-06-19 | 2014-06-19 | Wireless data collecting terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237091A (en) * | 2014-09-26 | 2014-12-24 | 浙江水利水电学院 | Real-time urban raising dust monitoring node used for mobile platform |
| CN109658681A (en) * | 2019-02-18 | 2019-04-19 | 西南大学 | A kind of mobile agricultural machine car-mounted terminal data acquisition device |
| CN109741590A (en) * | 2019-02-26 | 2019-05-10 | 张家港氢芯电气系统科技有限公司 | Hydrogen fuel cell engine Wireless data acquisition unit |
| WO2024066527A1 (en) * | 2022-09-30 | 2024-04-04 | 青岛海信日立空调系统有限公司 | Air conditioner centralized control apparatus |
-
2014
- 2014-06-19 CN CN201410274095.6A patent/CN104008640A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237091A (en) * | 2014-09-26 | 2014-12-24 | 浙江水利水电学院 | Real-time urban raising dust monitoring node used for mobile platform |
| CN109658681A (en) * | 2019-02-18 | 2019-04-19 | 西南大学 | A kind of mobile agricultural machine car-mounted terminal data acquisition device |
| CN109741590A (en) * | 2019-02-26 | 2019-05-10 | 张家港氢芯电气系统科技有限公司 | Hydrogen fuel cell engine Wireless data acquisition unit |
| WO2024066527A1 (en) * | 2022-09-30 | 2024-04-04 | 青岛海信日立空调系统有限公司 | Air conditioner centralized control apparatus |
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Application publication date: 20140827 |
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