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CN103889074A - WIA-PA wireless network adapter device oriented at HART equipment - Google Patents

WIA-PA wireless network adapter device oriented at HART equipment Download PDF

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Publication number
CN103889074A
CN103889074A CN 201210554512 CN201210554512A CN103889074A CN 103889074 A CN103889074 A CN 103889074A CN 201210554512 CN201210554512 CN 201210554512 CN 201210554512 A CN201210554512 A CN 201210554512A CN 103889074 A CN103889074 A CN 103889074A
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device
wireless
wia
network
adapter
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CN 201210554512
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Chinese (zh)
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赵雪峰
曾鹏
徐洪垚
李金英
牛泽田
郑军
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中国科学院沈阳自动化研究所
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Abstract

The invention relates to an apparatus capable of carrying out information interaction with a wired field bus device, particularly to a wireless networks for industrial automation (WIA)-PA wireless network adapter device oriented at HART equipment. With the device, the field bus device can be connected to the WIA. The positive terminal of the wireless network adapter device is used for being connected with a power supply; and the negative terminal is used for connecting a positive terminal of a wired instrument. The wireless network adapter device comprises a filtering amplifying circuit, a power supply circuit, a WIA wireless communication module, a microprocessor, a modulation-demodulation module, and a bypass protection circuit. According to the invention, the device, together with the wired instrument, is connected in series to a current loop, so that the wired instrument can be accessed to the WIA by the wireless network adapter device.

Description

—种面向HART设备的WIA-PA无线网络适配装置 - for seed WIA-PA HART device wireless network adapter means

技术领域 FIELD

[0001] 本发明涉及一种可以与有线现场总线设备之间交互信息的装置,并且通过本装置可以将现场总线设备接入智能无线网络WIA (Wireless Networks forlndustrialAutomation)。 [0001] The present invention relates to a device and can exchange information between a wired field bus devices and Fieldbus devices may access the wireless intelligent network WIA (Wireless Networks forlndustrialAutomation) through this unit.

背景技术 Background technique

[0002] 智能无线网络WIA基于短程无线通信IEEE802.15.4标准,使用自由频带,解决在大型器械、金属管道等对无线信号反射、散射造成的多径效应,以及电机、器械运转产生的电磁噪声对无线通信干扰,提供高可靠、实时无线通讯服务。 [0002] Wireless Intelligent Network WIA IEEE802.15.4 standards-based short-range wireless communication using a frequency band consisting of, in the solution of electromagnetic radio signals reflected multipath effects due to scattering, and a motor operating the instrument device to generate a large, metal pipes, etc. Noise wireless communications interference, providing highly reliable, real-time wireless communication services. 智能无线网络WIA技术特别适用于工业控制与工厂自动化过程控制,并广泛应用于石油、化工、冶金、矿山等领域。 WIA intelligent wireless networking technology is particularly suitable for industrial control and factory automation, process control, and is widely used in petroleum, chemical, metallurgy, mining and other fields.

[0003] 大部分石油、化工企业都有成百上千的智能仪表。 [0003] Most of the petroleum, chemical companies have hundreds of smart meters. 这些仪表一般都采用有线的方式与控制室相连接。 These instruments are generally used in a wired manner and is connected to the control chamber. 这种有线连接通过构成电流环路传递过程控制中的测量信号和控制信号,同时电流环路也为部分仪表提供消耗的电能。 This wired connection handoff measurement and control signals through the configuration process control current loop, and current loop also provides part of the power consumption meter. 另外,带有WIA技术的无线仪表通过无线构成自组织、自修复的智能网络相连接。 Further, with the instrument WIA wireless technology, the intelligent network self-healing phase constituting the ad-hoc wireless connection. 无线仪表采用低功耗设计使用电池供电,大幅降低了油罐、矿井等边远和难到达地区的布线成本。 Wireless instrument uses low-power battery-powered design, significantly reduce the cost of wiring tank, mines and other remote and difficult to reach areas.

[0004] 一方面,这些传统有线HART仪表可以检测到丰富的过程控制信息和设备状态信息。 [0004] In one aspect, these conventional wired HART devices can detect rich process control information and device state information. 然而由于现场改造困难、布线成本高等原因,通常控制中心只读取了仪表的PV (主变量)等简单的信息,大部分信息被闲置。 However, due to difficulties in the transformation of the scene, the wiring because of higher cost, typically the control center only read the meter PV (primary variables) and other simple information, most of the information to be idle. 另一方面,有线仪表和无线WIA仪表在同一个工厂中工作,迫切要求通过最小的改动将有线仪表的数据传入WIA网络中。 On the other hand, wired and wireless WIA meter instrumentation work in the same factory, the urgent requirement with minimal changes to the wired WIA meter data into the network.

发明内容 SUMMARY

[0005] 针对现有技术存在的上述不足之处,本发明要解决的技术问题是提供一种面向HART设备的WIA-PA无线网络适配装置,用于将有线仪表连接到WIA网络时使用。 [0005] In view of the above deficiencies of the prior art, the present invention is to solve the technical problem of providing a WIA-PA wireless network adapter means for HART devices, for connecting the instrument to a wired network using WIA.

[0006] 本发明为实现上述目的所采用的技术方案是:一种面向HART设备的WIA-PA无线网络适配装置,所述无线网络适配装置的正端子用于连接电源,负端子用于连接有线仪表的正端子,所述无线网络适配装置包括: [0006] Technical Solution To achieve the above object of the present invention is used is: A WIA-PA wireless network adapter means for HART devices, the wireless network adapter means for connecting the positive terminal of the power source, the negative terminal for wired meter positive terminal, the wireless network adapter means comprises:

[0007] 滤波放大电路,连接所述无线网络适配装置的两个端子和供电电路,用于对输入信号进行滤波并放大; [0007] The filter amplifier circuit, and a power supply circuit connecting the two terminals of the wireless network adapter means, for filtering and amplifying the input signal;

[0008] 供电电路,连接WIA无线通讯模块和所述滤波放大电路,用于为WIA无线通讯模块提供电能; [0008] The power supply circuit connected WIA wireless communication module and the filter amplifier circuit for supplying power to the wireless communication module WIA;

[0009] WIA无线通讯模块,连接微处理器和供电电路,用于在微控制器的控制下发送无线 [0009] WIA wireless communication module, and a power supply circuit connected to the microprocessor for transmitting the radio under control of the microcontroller

信号; signal;

[0010] 微处理器,连接WIA无线通讯模块和调制解调模块,用于与WIA无线通讯模块的交互,还用于控制调制解调模块对HART模拟信号的调制和解调; [0010] microprocessor, connected WIA wireless communication module and a modem module for interacting with WIA wireless communication module is further configured to control the modem module HART modulation and demodulation of the analog signal;

[0011] 调制解调模块,连接所述无线网络适配装置的负端子和所述微控制器; [0011] modem module, the wireless network adapter means connected to a negative terminal of the microcontroller;

[0012] 旁路保护电路,两端连接所述无线网络适配装置的两个端子。 [0012] bypass protection circuit connected across two terminals of said wireless network adapter means. [0013] 所述供电电路包括 [0013] The power supply circuit comprises

[0014] 压降控制模块,输入端连接HART总线,输出端连接系统供电模块,用于为系统供电模块提供稳定电压; [0014] The pressure drop control module, an input terminal connected HART bus, a system power supply module connected to an output terminal, for providing a stable voltage for the system power supply module;

[0015] 系统供电模块,连接微处理器、压降控制模块和充电控制模块,用于将输入的电压转换为,为微处理器供电和为储能元件充电; [0015] A system power supply module, connected to a microprocessor, and a pressure drop control module charge control module, configured to convert the input voltage, the charging power for the microprocessor and to an energy storage element;

[0016] 充电控制模块,连接系统供电模块、微处理器和储能元件,用于在微处理器的控制下,实现储能元件的充电使能; [0016] The charge control module, connected to the system power supply module, a microprocessor and a storage element, under control of the microprocessor, to achieve the charging of energy storage element enabled;

[0017] 储能元件,连接充电控制模块和WIA供电模块,用于存储电能; [0017] The energy storage element, and a charge control module connected WIA power supply module, for storing electrical energy;

[0018] 微处理器,控制充电控制模块为储能元件充电,控制WIA供电模块为WIA无线通讯模块供电; [0018] microprocessor, the control module controls the charging of charge storage device, the power supply control module WIA WIA power wireless communication module;

[0019] WIA供电模块,连接储能元件和微处理器,用于根据WIA网络协议,在微处理器的控制下,为所述WIA无线通讯模块提供电能。 [0019] WIA power supply module, and a microprocessor connected to an energy storage element, according to the network protocol WIA, under microprocessor control, to provide power to the wireless communication module WIA.

[0020] 所述系统供电模块采用TPS61070芯片,将输入的2V直流电转成3.3V直流电源。 [0020] The system power supply module uses TPS61070 chip, the input DC 2V to 3.3V DC power switch.

[0021] 所述微处理器采用TI公司的M430F149低功耗单片机。 [0021] The microprocessor M430F149 TI's low-power microcontroller.

[0022] 所述充电控制模块为MOS管或模拟开关芯片。 [0022] The charge control MOS transistor module or chip analog switch.

[0023] 所述储能元件选用超级电容,电容值不小于0.25F。 [0023] The energy storage element selected super capacitor, the capacitance value of not less than 0.25F.

[0024] 所述微处理器还连接复位电路。 [0024] The microprocessor reset circuit is also connected.

[0025] 所述调制解调模块包括调制电路、解调电路、模拟开关、隔直流电容和负载电阻; [0025] The modem module includes a modulation circuit, a demodulation circuit, an analog switch, a DC-blocking capacitor and the load resistor;

[0026] 所述供电电路由两条并联的支路构成,两端连接微处理器和所述无线网络适配装置的负端子:一条支路由调制电路和1¾拟开关串联构成;另一条支路由解调电路、隔直流电容和负载电阻串联构成。 [0026] The power supply circuit is constituted by two parallel branches connected across the negative terminal of the microprocessor and the wireless network adapter means: a modulation circuit and a branch 1¾ analog switches connected in series; the other branch a demodulation circuit, a DC blocking capacitor and load resistor in series.

[0027] 所述调制电路由模拟滤波器组成。 The [0027] modulation circuit analog filters.

[0028] 本发明具有以下优点: [0028] The present invention has the following advantages:

[0029] 1.本发明提供一种无线适配装置装置,与有线仪表一同串联在电流回路中,使得有线仪表可以通过无线适配装置接入WIA无线网络。 [0029] 1. The present invention provides a wireless adapter means, wired in series with the meter in the current loop so that the instrument can access the wired network via the wireless adapter WIA wireless device.

[0030] 2.WIA网络可以通过无线适配装置对有线仪表完成变量读取,状态检测,命令发送等操作。 [0030] 2.WIA wireless network adapter means may be accomplished by wired to the instrument variable reading state detection, command transmission and other operations.

[0031] 3.装置将串联在有线仪表的电流环路中,并使用电流环路为装置供电。 [0031] 3. The device wired in series in the current loop in the instrument, and using a current loop of the power supply device. 装置内部的模拟电路和微型控制器可以读取仪表的过程信息和状态信息和向仪表写入控制命令,内置无线模块与WIA网络经行通讯,从而使将有线仪表的信息接入WIA网络。 And an analog circuit means inside the micro controller to read the meter and to process state information and write information to the meter control command module with built-in wireless communication network via WIA row, so that the information of the meter wired access network WIA.

附图说明 BRIEF DESCRIPTION

[0032] 图1是有无线适配装置的工业控制系统拓扑图; [0032] FIG. 1 is an industrial control system topology of a wireless adapter device;

[0033] 图2是无线适配装置与有线仪表电流环路的连接图; [0033] FIG. 2 is a diagram of a wireless adapter device connecting the wired meter current loop;

[0034] 图3是无线适配装置电路结构框图; [0034] FIG. 3 is a circuit block diagram showing a wireless adapter device;

[0035] 图4是无线适配装置工作过程图。 [0035] FIG. 4 is a wireless adapter device during operation of FIG.

具体实施方式 detailed description

[0036] 下面结合附图及实施例对本发明做进一步的详细说明。 [0036] Example embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and. [0037] 图1展示了有WIA无线适配器的工业控制系统10拓扑图,包括:后台WIA服务器 [0037] FIG. 1 shows a wireless adapter has WIA industrial control system 10 topology, comprising: a back-end server WIA

11 ;工业以太网12 ;控制室19和有线HART仪表22组成的传统结构。 11; conventional configuration control chamber 19 and the instrument 22 wired HART thereof; IE 12. WIA无线网关14、无线HART仪表23、通过接口17连接WIA无线适配器装置16的传统有线HART仪表18和作为中继使用的WIA无线适配器15组成的具有自组织自适应功能的WIA网络;后台WIA服务器11包括工业计算机、操作系统和应用软件组成。 WIA wireless gateway 14, wireless HART devices 23, 17 via the interface cable connected to a conventional HART devices 1816 and self-organizing network WIA adaptive function having a relay WIA wireless adapter 15 using a composition WIA wireless adapter means; backend server WIA 11 including industrial computer, operating system and application software. 其功能是完成对设备的组态、对网络下设备的控制、检测信息采集分析、数据的储存等功能。 Its function is to complete the configuration of the device, under the control of network devices, detection information collection and analysis, data storage and other functions. 普通的有线HART仪表22通过2线制4-20mA接口21与控制室相连接。 Common instrument 22 via wired HART 4-20mA two-wire interface 21 is connected to the control chamber. 4_20mA接口20可以通过接口17连接WIA无线适配器16,这样无线适配器16无线信号24与WIA网络中其他设备通信15、23、14等,有线仪表的信息通过无线适配装置将接入WIA网络。 4_20mA interface 20 may be connected via the interface 16 WIA wireless adapter 17, the adapter 16 so that the wireless radio signal 24 and the other devices in the communication network WIA 15,23,14, etc., on the wired meter via a wireless network adapter means to access WIA. 接口17不会影响有线HART仪表18通过4_20mA接口20与控制室19之间的工作。 HART interface 17 does not affect the cable 18 through the work of the meter interface 20 between the control chamber 19 4_20mA. 在WIA网络中,网关通过网关网络接口13接入工业以太网12,一台网关可以通过无线信号24链接多台无线WIA设备,作为中继的WIA无线适配器15,WIA无线适配器16可以与无线HART仪表23 —起组网,并且作为中继的WIA无线适配15在不连接有线仪表的情况下可以配置成网络中继。 In WIA network, the gateway through the gateway access network interface 13 Industrial Ethernet 12, a gateway 24 may be via a wireless signal link WIA multiple wireless devices as relay WIA wireless adapter 15, 16 may be the HART wireless WIA wireless adapter instrument 23 - from networking, and as a wireless relay WIA adapter 15 without a wired connection network may be configured to meter relay.

[0038] 图2WIA无线适配装置与有线仪表电流环路的连接图,包括WIA无线适配器16、有线HART仪表18、接口17、控制室19和WIA网络25。 [0038] FIG 2WIA wireless adapter device with the meter current loop wire connection diagram, including WIA wireless adapter 16, a wired HART devices 18, interface 17, the control chamber 19 and WIA network 25. 控制室的电流环路正端26与无线适配器的正端子31相连接,电流环路负端27与有线仪表HART接口端子负端30相连接。 Current loop control chamber 26 is connected to the positive terminal to the positive terminal of the wireless adapter 31, the negative terminal 27 and the current loop meter HART interface cable is connected to the negative terminal end 30. 有线仪表HART接口端子正端29通过连接线28与无线适配器的负端子32相连接。 HART interface terminal end of the positive cable 29 is connected to the instrument 32 to the negative terminal of the wireless adapter 28 via the connection line. WIA无线适配器16通过无线信号24与WIA网络25进行通讯。 WIA wireless adapter 16 communicates through the wireless network signals 24 and 25 WIA. 接口17保证能保证WIA无线适配器置16与有线HART仪表18之间安全稳固的连接到一起。 WIA interface 17 to ensure that the wireless adapter to ensure a safe and secure device 16 connected between the cable 18 and HART devices together. 控制室19可以是HART总线上的一级主站,等效于电源36与负载电阻37构成,电源36为仪表提供电流,并在电流环路正端26上通过标准HART信号与有线HART仪表18通讯。 Control chamber 19 can be a bus master on the HART, equivalent to the power supply 36 and the load resistor 37 constitute the power supply 36 supplies current to the meter, and the positive terminal of the current loop 26 via a wired standard HART signal HART devices 18 communication. 负载电阻37作用是控制环路压降,大小由有线HART仪表18决定,如温度表常采用500欧姆2W的电阻。 Load resistance 37 is to control the loop pressure drop, the size of the cable 18 is determined by the HART devices, such as resistance thermometers often used in 500 ohm 2W. WIA无线适配器16串联到电流环路中,从而可以发送和接收电流环路上叠加的标准HART数字信号。 WIA wireless adapter 16 connected in series to the current loop, which can send standard HART digital signal superimposed on the current loop and the receiver. WIA无线适配器16内部电路等效与一个随电流变化阻值可变的电阻模型33,不会对电路中电流量的改变,所以不会影响环路中有线HART仪表18和接口17的控制量和信息量的传送。 WIA wireless adapter 16 with an internal circuit equivalent to a change in resistance of the variable resistance of the current model 33, does not change the amount of current in the circuit, so it will not affect the loop wire HART device 18 and the control interface 17 and the amount of the amount of information transmitted. WIA无线适配器16可以在HART电流环路上做二级主设备,若环路上无一级主设备,无线适配装置也可以配置成一级主设备。 WIA wireless adapter 16 can be done in two HART master current loop, if the loop without a master device, the wireless device may be adapted to a configured master device.

[0039] 图3WIA无线适配装置电路结构框图,由旁路保护41、滤波电路42、电压控制电路45、系统模块46、WIA无线通讯模块51、微处理器52、HART调制电路53和HART调制电路54等电路组成。 [0039] FIG 3WIA circuit block diagram showing a wireless apparatus adapted bypass protection 41, the filter circuit 42, the voltage control circuit 45, the system module 46, WIA wireless communication module 51, the microprocessor 52 is, HART modulation circuit 53 and the modulation HART circuit 54 and other circuits. 无线适配器的正端子31和无线适配器的负端子32串联到HART电流环路中,电流经无线适配器的正端子31从内部环路正58流入,最终从无线适配器的负端子32流出。 The positive terminal of the wireless adapter 31 and the negative terminal 32 of the wireless adapter to HART series current loop, the current through the positive terminal 31 of the wireless adapter 58 flows from the inner loop timing, the final effluent from the negative terminal 32 of the wireless adapter. 旁路保护41并联在内部环路正58和内部环路负59之间,其作用是防止电流和电压过大损坏内部电路,其当环路故障时会钳制在一个安全电压下,如果遇到大电流大电压会短路从而不影响其他设备的畅通。 The bypass 41 connected in parallel between the positive 59 in the inner loop 58 and internal loop negative, its role is to prevent excessive current and voltage damage to the internal circuit will clamp at a safe voltage, if the loop when it encounters failure large short-circuit high-current voltage so as not to affect the flow of other devices. 因此,该部分电路可以采用稳压管、和齐纳管进行保护,根据不同现场的防护要求也可以采用多级保护的方法设计。 Thus, the regulator portion of the circuit may be employed, and the zener protection, protection in different fields according to the design method of multi-level protection may also be employed. 为了测量环路上的电流量,在内部环路负59上串联一个电压降控制43,为了不影响环路压降电阻值尽量小,例如选用10欧姆2W,电压降控制43两端接差分信号放大器44。 To measure the amount of current on the loop, the inner loop in series with a voltage drop of the negative control 59 43, in order not to affect the loop resistance value of the voltage drop as small as possible, for example, on a 10 ohm 2W, the voltage drop across the control amplifier 43 connected to the differential signal 44. 系统模块46两端接在内部环路正负58,59,电压降控制43两端经放大器放大的环路电流信号转换成电压信号后与电压降电路相连接。 46 both ends of the inner loop system modules connected to positive and negative 58 and 59, both ends of the voltage drop amplified by the amplifier 43 controls the loop current signal is connected to the voltage drop circuit into a voltage signal. 其作用是根据内部环路正58,内部环路负59中电流的变化来改变无线适配器的正端子31和无线适配器的负端子32之间的电压降,这样做一方面为电源模块产生压降,另一方面可以控制压降与充电控制电路47相配合限制超级电容49的充电功率在环路电流变化的情况下保持功率恒定。 Its role is an inner loop 58 positive, 59 negative change in the inner loop current to change the voltage drop between the negative terminal 31 and the positive terminal 32 of the wireless adapter wireless adapter, to do so on the one hand a pressure drop of the power supply module the other hand, the pressure drop can be controlled with the charge control circuit 47 cooperate to limit the charging power of the super capacitor 49 is maintained constant in a case where the power change in loop current. 电压控制部分可设计为可控电阻器等方法实现,也可以采用通电压基准芯片与差分信号放大器44输出做比较通过可调稳压芯片将电流环路间限制在安全的范围内。 The voltage control section may be designed to achieve a controlled resistors or the like, an output chip reference voltage through a differential signal amplifier 44 may be used to compare the inter-chip voltage regulator through an adjustable current limiting loop in a safe range. 系统模块46并联在电压控制电路45上,为其他电路一方面为微处理器、运算放大器等芯片供电,另一方面为充电控制电路47提供电能。 The system module 46 in parallel to the voltage control circuit 45, other circuits on the one hand to a microprocessor chip power supply, an operational amplifier, on the other hand the charging control circuit 47 to provide power. 系统模块46可以选择线性稳压芯片或是DC-DC模块。 The system module 46 may select either the linear regulator chip DC-DC module. 充电控制电路47可以由模拟开关电路和稳压电路组成,其功能是为超级电容49充电并控制充电电压在2.2V以下。 The charge control circuit 47 may be formed of an analog circuit and a switching regulator circuit, which functions to charge the super capacitor 49 and controls the charging voltage is 2.2V or less. WIA供电模块48可以由DC-DC模块和线性稳压芯片和电容电量监控电路组成构成。 WIA power supply module 48 may be formed and a DC-DC linear regulator chip module and the capacitor charge monitor circuit configuration. 其功能是将超级电容49正端的电压转换成无线模块的工作电压。 Its function is to convert the super capacitor 49 a positive voltage terminal to the wireless module operating voltage. 超级电容49为电能储能装置,通过充电控制电路47充电为WIA无线通讯模块51提供电能,其容量的选型由WIA无线通讯模块51的发射功率和WIA供电模块48的转换效率有关系。 49 is a super capacitor electrical energy storage device, charged by the charging control circuit 47 to provide power to the wireless communication module 51 WIA, by selection of its capacity WIA wireless communication module 51 and a transmit power conversion efficiency of the power supply module 48 WIA a relationship. 微控制处理器52可以为具有串口和定时器等外部设备的低功耗单片机。 Micro control processor 52 may be a microcontroller having a low power external serial devices and timers. 其功能一方面通过串口与WIA无线通讯模块51之间传递信息,另一方面对环路上的HART模拟信号进行调制和解调。 Its function by one hand between the serial port and the wireless communication module 51 WIA transmit information, on the other hand HART analog signal on loop for modulation and demodulation. HART接收过程:首先将内部环路负59上的模拟HART信号经过5.11负载电阻56和隔直流电容57后通过HART解调电路54以数字波形的形式传送给微处理器52,解调电路部分可以由比较器和电压基准电路组成;微处理器52将信号进行分析转换,经WIA无线通讯模块51以无线信号24的形式发送出去。 HART receive process: First, the inner loop signals on the negative analog HART 59 through 52, the demodulation circuit 56 and the load resistance section 5.11 rear compartment DC capacitor 57 is transmitted to the demodulation circuit 54 via HART digital waveform in the form of microprocessor a comparator and a voltage reference circuit; microprocessor 52 converts the signal is analyzed, sent by the wireless communication module 51 WIA form of a wireless signal 24. HART发送过程:WIA无线通讯模块51通过无线信号24接收到WIA网络信息后通过串口传给微处理器52 ;经过微处理器52分析处理后的信号以数字波形的形式发送给HART调制电路53,HART调制电路54可由模拟滤波器组成,将数字波形信号平滑成模拟正弦信号;最后模拟信号经过模拟开关器55发送到内部环路负59上。 HART transmission process: WIA wireless communication module 51 receives information via a wireless network WIA signal transmitted through the serial port 24 microprocessor 52; signals through the microprocessor 52 to transmit HART modulation analysis processing circuit 53 in the form of a digital waveform, HART modulation circuit 54 may be analog filters, digital waveform signals into an analog sinusoidal signal smoothing; last analog signal is transmitted to the inner loop 59 through the negative analog switches 55.

[0040] 压降控制模块45由稳压芯片及其外围电路组成。 [0040] The control module 45 by a pressure drop regulator chip and its peripheral circuit. 系统供电模块46采用TPS61070芯片,将输入的2V直流电转成3.3V直流电源。 TPS61070 system power supply module 46 using the chip, the input DC 2V to 3.3V DC power switch. 微处理器52采用TI公司的M430F149低功耗单片机。 The microprocessor 52 M430F149 using TI's low-power microcontroller. 充电控制模块47为MOS管或模拟开关芯片。 Charge control module 47 is a MOS transistor or an analog switch chip. 充电控制模块47并联一个稳压芯片。 Charge control module 47 in parallel with a voltage regulator chip. 所述稳压芯片采用TLV3491。 The regulator chip TLV3491. 储能元件49选用超级电容,电容值不小于0.25F。 Energy storage element 49 selected super capacitor, the capacitance value of not less than 0.25F. WIA供电模块48由DC-DC芯片及其外围电路组成。 WIA powered by the DC-DC module 48 and its peripheral circuit chip.

[0041] 图4WIA无线适配器工作过程图66,框图从启动4开始。 [0041] FIG 4WIA working process wireless adapter 66, a block diagram of boot 4 from the beginning. 首先,在为了配置无线适配装置正常工作需要进行初始化61,其包括载入程序、载入历史数据、初始化模拟开关、检测电容电压等操作。 First, in order to work properly configure the wireless adapter device 61 needs to be initialized, including the loader, loading the historical data, the initialization operation of the analog switch, capacitor voltage detecting the like. 接下来,无线适配装置将将进入连接从设备状态62,其通过电流环路向HART总线上发送设备轮询信息,寻找作为从设备的标准HART仪表,读取从设备的基本信息并保持通讯。 Next, the wireless adapter means 62 enters the connected state from the device, the device transmits the polling information to the current loop bus via HART, looking from a standard HART instrumentation reads basic information from the device and maintain communication. 然后,无线适配装置将连接WIA网络63,将仪表的基本信息传到后台服务器进行设备组态,根据控制功耗的和实际需要可以配置与WIA网络的更新频率。 Then, the wireless network adapter means connected WIA 63, the basic information is transmitted to the meter back-end server for device configuration, and control the power consumption according to the actual needs can configure the update frequency WIA network. 进入处理并传递信息64后,无线适配装置将处理并传递来自仪表和WIA网络的信息。 After entering the processing and transmission of information 64, the wireless processing means and adapted to transmit information from the meter and WIA network. 若无线适配装置与仪表此时断开连接时,无线适配装置依然以网络中继的状态存在于WIA网络中。 If the wireless adapter device with the meter disconnects at this time, the wireless network adapter means in a state still present in WIA relay network. 最后,进入结束65,无线适配装置将进入休眠状态等待下一次启动。 Finally, go to the end of 65, a wireless adapter device will enter the sleep state waiting for the next start.

Claims (9)

1.一种面向HART设备的WIA-PA无线网络适配装置,其特征在于,所述无线网络适配装置的正端子用于连接电源,负端子用于连接有线仪表的正端子,所述无线网络适配装置包括: 滤波放大电路,连接所述无线网络适配装置的两个端子和供电电路,用于对输入信号进行滤波并放大; 供电电路,连接WIA无线通讯模块和所述滤波放大电路,用于为WIA无线通讯模块提供电能; WIA无线通讯模块,连接微处理器和供电电路,用于在微控制器的控制下发送无线信号; 微处理器,连接WIA无线通讯模块和调制解调模块,用于与WIA无线通讯模块的交互,还用于控制调制解调模块对HART模拟信号的调制和解调; 调制解调模块,连接所述无线网络适配装置的负端子和所述微控制器; 旁路保护电路,两端连接所述无线网络适配装置的两个端子。 An apparatus for HART WIA-PA wireless network adapter means, wherein the positive terminal for the wireless network adapter means connected to a power, a negative terminal for the positive terminal of the meter wired, the wireless network adapter device comprising: a filter amplifier circuit, and a power supply circuit connecting the two terminals of the wireless network adapter means, for filtering and amplifying the input signal; a power supply circuit, and a wireless communication module connected to the WIA filter amplifier circuit for providing power to the wireless communication module WIA; WIA wireless communication module, and a power supply circuit connected to the microprocessor, for transmitting a radio signal under control of the microcontroller; a microprocessor, connected WIA wireless communication module and the modem means for interacting with WIA wireless communication module is further configured to control the modem module HART modulation and demodulation of an analog signal; modem module, connected to the negative terminal of the wireless network adapter means and said micro a controller; bypass protection circuit, connected across the two terminals of the wireless network adapter means.
2.根据权利要求1所述的一种面向HART设备的WIA-PA无线网络适配装置,其特征在于,所述供电电路包括压降控制模块,输入端连接HART总线,输出端连接系统供电模块,用于为系统供电模块提供稳定电压; 系统供电模块,连接微处理器、压降控制模块和充电控制模块,用于将输入的电压转换为,为微处理器供电和为储能元件充电; 充电控制模块,连接系统供电模块、微处理器和储能元件,用于在微处理器的控制下,实现储能元件的充电使能; 储能元件,连接充电控制模块和WIA供电模块,用于存储电能; 微处理器,控制充电控制模块为储能元件充电,控制WIA供电模块为WIA无线通讯模块供电; WIA供电模块,连接储能元件和微处理器,用于根据WIA网络协议,在微处理器的控制下,为所述WIA无线通讯模块提供电能。 The one of said 1 WIA-PA for the wireless network adapter device as claimed in claim HART devices, wherein said power supply circuit comprises a pressure drop control module, an input terminal connected HART bus, an output terminal connected to system power supply module , for providing a stable voltage for the system power supply module; system power supply module, connected to a microprocessor, and a pressure drop control module charge control module, configured to convert the input voltage, the charging power for the energy storage element and a microprocessor; charge control module, connected to the system power supply module, a microprocessor and a storage element, under control of the microprocessor, to achieve the charging of energy storage element enabled; energy storage element, and a charge control module connected WIA power supply module, with storing electrical energy; a microprocessor, controls the charging control module charging the energy storage element, the power supply control module WIA WIA power wireless communication module; WIA power supply module, and a microprocessor connected to an energy storage element, according to the network protocol WIA, in under microprocessor control, to provide power to the wireless communication module WIA.
3.根据权利要求2所述的一种WIA-PA无线网络适配装置的供电电路,其特征在于,所述系统供电模块采用TPS61070芯片,将输入的2V直流电转成3.3V直流电源。 The power supply circuit for a WIA-PA wireless network adapter device according to claim 2, wherein the system power supply module uses TPS61070 chip, 2V DC input converted to 3.3V DC power supply.
4.根据权利要求1或2所述的一种WIA-PA无线网络适配装置的供电电路,其特征在于,所述微处理器采用TI公司的M430F149低功耗单片机。 4. The power supply circuit for a WIA-PA or a wireless network adapter device according to claim 1, wherein said microprocessor M430F149 TI's low-power microcontroller.
5.根据权利要求2所述的一种WIA-PA无线网络适配装置的供电电路,其特征在于,所述充电控制模块为MOS管或模拟开关芯片。 Power supply circuit for a wireless network adapter WIA-PA device according to claim 2, wherein said charge control module is an analog switch or MOS transistor chip.
6.根据权利要求2所述的一种WIA-PA无线网络适配装置的供电电路,其特征在于,所述储能元件选用超级电容,电容值不小于0.25F。 6. A power supply circuit for a WIA-PA wireless network adapter device according to claim 2, wherein the energy storage element selected super capacitor, the capacitance value of not less than 0.25F.
7.根据权利要求1或2所述的一种面向HART设备的WIA-PA无线网络适配装置,其特征在于,所述微处理器还连接复位电路。 According to one or more of the 1 2 WIA-PA wireless network adapter means for HART device as claimed in claim wherein the microprocessor reset circuit is also connected.
8.根据权利要求1所述的一种面向HART设备的WIA-PA无线网络适配装置,其特征在于,所述调制解调模块包括调制电路、解调电路、模拟开关、隔直流电容和负载电阻; 所述供电电路由两条并联的支路构成,两端连接微处理器和所述无线网络适配装置的负端子:一条支路由调制电路和1¾拟开关串联构成;另一条支路由解调电路、隔直流电容和负载电阻串联构成。 According to one of the wireless network 1 WIA-PA HART devices for adaptation device as claimed in claim, wherein the modem module includes a modulation circuit, demodulation circuit, an analog switch, a DC-blocking capacitor and the load resistance; the power supply circuit is constituted by two parallel branches connected across the negative terminal of the microprocessor and the wireless network adapter means: a modulation circuit and a branch 1¾ analog switches connected in series; the other branch by a solution modulation circuit, a DC blocking capacitor and load resistor in series.
9.根据权利要求8所述的一种面向HART设备的WIA-PA无线网络适配装置,其特征在于,所述调制电路由模拟滤波器组成。 9. A member according to claim 8 WIA-PA said wireless network adapter means for HART devices, characterized in that said modulation circuit is composed of analog filters.
CN 201210554512 2012-12-19 2012-12-19 WIA-PA wireless network adapter device oriented at HART equipment CN103889074A (en)

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