CN2742681Y - Hand held communication device - Google Patents

Abstract

The utility model relates to a hand held communication device which comprises a plate surface, a shell body and a communication unit which is composed of an integrated circuit. The utility model is characterized in that the plate surface is provided with a display screen, function keys and digit symbol keys, wherein the function keys comprise a 'model ' key, a ' scope 'key, an 'export ' key, a key with a ' triangle ', a key with a 'start', a ' modification ' key, a 'deletion ' key, a ' confirmation ' key and a ' return ' key,. The digit symbol keys comprise a 'subtraction sign' key, an 'interrogation' key and ten digit symbol keys from 'zero' to 'ten'. The communication unit forms the integrated circuit according to the arrangement of the function keys and the digit symbol keys, so that the individual function can be completed. The Chinese display communication limiting surface is realized by the utility model. The utility model can directly carry out operation for all intelligent transducers which conforms to the inlet of an HART communication protocol, and can quickly and conveniently realize the remote diagnosis and the parameter setting to the intelligent transducers.

Description

Hand held communication device

Technical field

The utility model relates to a kind of industrial automation instrument, is a kind of Hand held communication device, and particularly a kind of Chinesizing HART Hand held communication device is applicable to the operation of transmitter.

The Chinese transliteration of HART is called " Hart ", is a kind of network communication protocol that is widely used in the plant processes automatic field.It is that digital communication is superimposed upon on the signal of conventional 4-20mA and the combination that produces.Hart and existing analogue instrument compatibility, and use digital communication simultaneously, make remote configuration and diagnosis become possibility.Just because of this, Hart is so-called intelligent protocol.

Background technology

At present, at home market sale and the on-the-spot intelligent transducer that uses supporting Hand held communication device, all be the product of external import or import loose mail assembling, all in accordance with international HART communications protocol, display interface all adopts English to its communication modes.

Mainly have the problem of two aspects: the one, domestic instrument manufactory fails intelligent transducer HART communication module software and hardware technology on top of; The 2nd, the overwhelming majority instrument operation and maintenance personnel's of domestic enterprise English is not popularized as yet, also has certain difficulty with English operation.

Summary of the invention

The utility model relates to a kind of Hand held communication device, and particularly a kind of Chinesizing HART Hand held communication device has been realized the Chinese display communication interface.Can directly operate all intelligent transducers of following the import of HART communications protocol by Hand held communication device of the present utility model, conveniently realize remote diagnosis and parameter setting intelligent transducer.

Hand held communication device of the present utility model comprises the plate face, shell, the communication unit of forming by integrated circuit, it is characterized in that the plate face is provided with display screen, function key, digital symbol key, wherein contain " model " key in the function key, " scope " key, " output " key, " ▲ " key, "  " key, " change " key, " deletion " key, " affirmation " key, " return " key, contain "-" key in the digital symbol key, " " key, ten figure keys in " 0 "～" 9 ", communication unit is according to function key, the setting of numerical key is formed integrated circuit and is made it to finish function separately.

The display screen of the utility model Hand held communication device can be a LCDs, its demonstration be Chinese.

Its keyboard and the functional description of the utility model Hand held communication device are as follows:

Quick functional key:

Read the hander model

The measured value upper and lower limit is set

The online demonstration of measured value

Functional key:

Picture, alphabetical upturning key

Picture, alphabetical downturning key

Each functional parameter is revised

Cancellation misspecification

Function, parameter storage

Turn back to preceding functional picture

Digital symbol key: numerical key is used for writing and changing of numeral, and symbolic key is used to browse and select the image content of display screen.

Communication unit adopts 8 little power consumption chips as central microprocessor, external memorizer, resets and start-up circuit, and the state of keyboard is directly read and handled by central microprocessor.The communication of Hand held communication device and transmitter is to be finished by the HART carrier frequency signaling that is superimposed upon on 4mA～20mA holding wire, and this function realizes that by chip HT2012 it has the modulation function, can realize the conversion between logic level and the frequency signal.

The HART communication unit mainly is made up of input bandwidth-limited circuit, output Shaping filter circuit, modulator-demodulator, when transmitter receives the HART communication signal, the input tape bandpass filter is delivered to modulator-demodulator after the sine wave of HART is become square wave, being demodulated to digital signal through modulator-demodulator send CPU to handle, the digital signal that CPU returns is modulated into the HART frequency through modulator-demodulator, becomes the HART sine wave of standard through the waveform circuit of adjusting.The Chinesizing Hand held communication device can directly be operated all intelligent transducers of following the import of HART communications protocol.

Keyboard operation by the utility model Hand held communication device can realize transmitter worker item, model, product serial number, unit (having pressure and absolute pressure unit in 26), the maximum measurement upper limit, measuring range, damping, output mode, unusual output, the inquiry of totally nine kinds of parameters, setting and diagnosis, and can carry out the operation of self checking and self diagnosis to characterisitic parameters such as the linearity of transmitter, amplifier temperature.

This Hand held communication device has been realized the Chinese display communication interface.Domestic instrument attendant can directly be operated all intelligent transducers of following the import of HART communications protocol by Hand held communication device of the present utility model, conveniently realize remote diagnosis and parameter setting to intelligent transducer, and the cost of the utility model Hand held communication device is low, has the market competitiveness.

Description of drawings:

Fig. 1 is the utility model Hand held communication device schematic diagram.

Fig. 2 is that the HART communication unit of the utility model Hand held communication device is carried out setting worker item functional-block diagram.

Embodiment

To set the specific operation process that this Hand held communication device is described to worker's item of transmitter by using the utility model Hand held communication device below.

● set worker's item

Open HART Hand held communication device power supply, display show for information about with prepare after, if all are normal, the operation screen of worker's item then can appear setting, the item that this picture Displaying Meter is current has two kinds of selections: revise or do not revise.If worker's item that instrument is used is the same with original worker's item of setting, do not need change, then can be good for and carry out a following content by "  "; Different as worker's item and original worker's item of setting, can worker's item change picture appear by " change " key then, do not revise as not wanting this moment, then return the upper level picture by " returning " key; Revise as determining, flash worker's item of place's input change, by behind " affirmation " key at cursor, new worker's item picture (cursor disappearance at this moment) behind the display update, as confirm that new worker's item is errorless, confirm by " affirmation " key, worker's item occurs and write picture, the change of worker's item finishes; As continue to revise, enter a picture by " returning " key.

This Hand held communication device is to inquiry, setting and the diagnosis of other parameter of transmitter, and specific operation process is identical with setting worker item, so give unnecessary details no longer one by one.

Claims (3)

1, a kind of Hand held communication device, comprise the plate face, shell, the communication unit of forming by surface-mounted integrated circuit, it is characterized in that the plate face is provided with display screen, function key, digital symbol key, wherein contain " model " key in the function key, " scope " key, " output " key, " ▲ " key, "  " key, " change " key, " deletion " key, " affirmation " key, " return " key, contain "-" key in the digital symbol key, " " key, ten figure keys in " 0 "～" 9 ", communication unit is according to function key, the setting of numerical key makes it to finish function separately by integrated circuit.

2, Hand held communication device according to claim 1 is characterized in that communication unit adopts 8 little power consumption chips as central microprocessor, external memorizer, resets and start-up circuit, and the state of keyboard is directly read and handled by central microprocessor.

3, Hand held communication device according to claim 1 is characterized in that communication unit adopts chip HT2012, realizes the conversion between logic level and the frequency signal.

Images