CN2534562Y

CN2534562Y - Intelligent digital display multifunctional instrument

Info

Publication number: CN2534562Y
Application number: CN 02211618
Authority: CN
Inventors: 胡泽民
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-29
Filing date: 2002-04-29
Publication date: 2003-02-05
Anticipated expiration: 2012-04-29

Abstract

An intelligent digital display multi-functional instrument pertains to the art of measuring technology. The utility model is characterized in that the utility model includes a meter; the meter is provided with a measuring component interface and a remote transmitting control interface as well as a controller inside; the controller consists of a single chip, a digital display, a pressure magnifier, a current magnifier and a power supply which are all electrically connected; the single chip is electrically connected with the remote transmitting control interface; the measuring component interface is connected with a thermocouple, or a pressure sensor, or a thermal resistance; the thermocouple is connected with the pressure magnifier; the pressure sensor is electrically connected with the pressure magnifier, or the current magnifier; and the thermal resistance is electrically connected with the current magnifier. The utility model has the advantages of remote transmission, online display and measurement, simple structure, low cost, high detection precision and accurate indication.

Description

Intelligent digital shows multifunction instrument

Technical field

The utility model relates to field of measuring technique, is that a kind of intelligent digital of measuring temperature, pressure shows multifunction instrument.

Background technology

At present, enterprise's production automations such as petrochemical complex, smelting, thermoelectricity have been used in the microcomputer centralized control.And in the on-line measurement primary instrument, can realize online pointer displayed formula thermometer, and tensimeter is by pointer scale displays temperature, pressure indicating value, and it is complicated to exist structure, and precision is low, the bigger deficiency that waits of the error of indication; And temperature-sensing elements such as the thermopair of measurement temperature, thermal resistance, the pressure transducer of gaging pressure can only be with the measuring-signal teletransmission to central control room, converting standard signal input microcomputer to by temperature transmitter, pressure unit respectively shows or adjusting automatically, and can not realize online demonstration, this makes troubles for the execute-in-place tours of inspection.

Summary of the invention

The purpose of this utility model is to provide a kind of can realize teletransmission, online demonstration measurement, and simple in structure, cost is low, the measuring accuracy height, and indicating value intelligent digital accurately shows multifunction instrument.

The purpose of this utility model is realized by following technical scheme: a kind of intelligent digital shows multifunction instrument, its special character is: it comprises the table body, on the table body, be provided with measuring sensor interface and teletransmission control interface, be built-in with controller at the table body, controller is by single-chip microcomputer and digital indicator, voltage amplifier, current amplifier, power supply is electrically connected to be formed, single-chip microcomputer is electrically connected with the teletransmission control interface of table body, on the measuring sensor interface of table body or be connected with thermopair, or pressure transducer, or thermal resistance, thermopair is electrically connected with voltage amplifier, pressure transducer or be electrically connected with voltage amplifier, or be electrically connected with current amplifier, thermal resistance is electrically connected with current amplifier

Intelligent digital shows multifunction instrument, its special character is: it comprises the table body, on the table body, be provided with measuring sensor interface and teletransmission control interface, be built-in with controller at the table body, controller is by single-chip microcomputer and digital indicator, voltage amplifier, power supply is electrically connected to be formed, single-chip microcomputer is electrically connected with the teletransmission control interface of table body, on the measuring sensor interface of table body or be connected with thermopair or pressure transducer, thermopair is electrically connected with voltage amplifier, or pressure transducer is electrically connected with voltage amplifier.

Intelligent digital shows multifunction instrument, its special character is: it comprises the table body, is provided with measuring sensor interface and teletransmission control interface on the table body, be built-in with controller at the table body, controller is electrically connected with digital indicator, current amplifier, power supply by single-chip microcomputer to be formed, single-chip microcomputer is electrically connected with the teletransmission control interface of table body, on the measuring sensor interface of table body or be connected with thermal resistance or pressure transducer, thermal resistance is electrically connected with current amplifier, or pressure transducer is electrically connected with the electric current amplification.

Intelligent digital of the present utility model shows that the advantage applies of multifunction instrument exists:

1, owing to be built-in with controller at the table body, controller is displays temperature, force value intuitively, and indicating value is accurate, the measuring accuracy height;

2, owing on the table body, be provided with the teletransmission control interface that is electrically connected with the single-chip microcomputer of controller, the fortune number of delivering a letter can be transported in the teletransmission control microcomputer that is connected with central control room, show or adjusting automatically by microcomputer;

3, owing to be provided with the measuring sensor interface at table on the body, this measuring sensor interface and thermopair or thermal resistance or pressure transducer are connected, can realize temperature, pressure on-line measurement demonstration, bring convenience to the execute-in-place tours of inspection.

4, simple in structure, cost is low.

Description of drawings

Fig. 1 shows the multifunction instrument structural representation for intelligent digital.(the A-A cross-sectional schematic of Fig. 2).

Fig. 2 is the B-B cross-sectional schematic of Fig. 1.

Fig. 3 is the thermal resistance structural representation.

Fig. 4 is the pressure sensor structure synoptic diagram.

Fig. 5 is the controller circuitry block scheme of embodiment 1.

Fig. 6 is the controller circuitry schematic diagram of embodiment 1.

Fig. 7 is the controller circuitry schematic diagram of embodiment 2.

Fig. 8 is the controller circuitry schematic diagram of embodiment 3.

Embodiment

Embodiment 1: with reference to Fig. 1-4, intelligent digital shows that multifunction instrument has table body 1, is provided with measuring sensor interface 2 and teletransmission control interface 3 on table body 1, is built-in with controller 4 at table body 1.The power supply of controller 4 adopts 2CR type photoelectric cell 5 and laminated cell 6, and photoelectric cell 5 is over against optical window 7 places that place table body 1.The LCD digital indicator 8 of controller 4 is over against display window 9 places that place table body 1.According to measuring needs on the measuring sensor interface 2 of table body 1 or be connected with thermopair 10 or be connected with thermal resistance 12 or be connected with pressure transducer 15.Thermopair 10, thermal resistance 12 are loaded on respectively in the protective sleeve 11, and protective sleeve 11 is connected with the measuring sensor interface 2 of table body 1.Pressure transducer 15 is built-in with piezoelectric ceramics diaphragm 14 at shell 13 and is formed by shell 13.The upper end of the shell 13 of pressure transducer 15 is connected with the measuring sensor interface 2 of table body 1, and thermopair 10, thermal resistance 12, pressure transducer 15 are existing product.

With reference to Fig. 5 and 6, controller 4 is made up of single-chip microcomputer, digital indicator, voltage amplifier, current amplifier, power supply.Single-chip microcomputer adopts the MCS-8051 single-chip, and digital indicator adopts the LCD type.The input end D0-D7 of digital indicator is electrically connected with the output terminal P0.0-P0.7 of single-chip microcomputer; The output terminal RS.R/W.E of digital indicator is connected with the input end P2.0-P2.2 of single-chip microcomputer.Voltage amplifier is connected to form by integrated circuit die I C1, potentiometer RW1, resistance R 1-R4, capacitor C 1, C2.Current amplifier is connected to form by integrated circuit die I C2, potentiometer RW2, resistance R 5-R10, resistance R 0, capacitor C 3, C4.The input end of voltage amplifier (resistance R 1, R3) or be electrically connected with thermopair 10, or be electrically connected with pressure transducer 15.(integrated circuit die I C1 is connected with single-chip microcomputer input end P3.5 pin the output terminal of voltage amplifier.The input end of current amplifier (resistance R 0, R5) or be electrically connected with thermal resistance 12 (being Rt), or be electrically connected with pressure transducer 15.The output terminal of current amplifier (integrated circuit die I C2) is connected with single-chip microcomputer input end R3.4 pin.Single-chip microcomputer teletransmission control output end P3.1 pin is connected with the teletransmission control interface 3 of table body 1, and teletransmission control interface 3 is connected with the teletransmission control microcomputer of central control room.

Embodiment 2: with reference to Fig. 1,2 and 4, intelligent digital shows that multifunction instrument is basic identical with embodiment 1 structure and annexation, on the measuring sensor interface 2 of showing body 1 or be connected with thermopair 10 or pressure transducer 15.

With reference to Fig. 7, just the electric current amplification appliance with Fig. 6 middle controller 4 removes, and keeps voltage amplifier.

Embodiment 3: with reference to Fig. 2-4, intelligent digital shows that multifunction instrument is basic identical with embodiment 1 structure and annexation, on the measuring sensor interface 2 of showing body 1 or be connected with thermal resistance 12 or pressure transducer 15.

With reference to Fig. 8, just the voltage amplifier with Fig. 6 middle controller 4 removes, and keeps current amplifier.

Claims

1, a kind of intelligent digital shows multifunction instrument, it is characterized in that: it comprises the table body, on the table body, be provided with measuring sensor interface and teletransmission control interface, be built-in with controller at the table body, controller is by single-chip microcomputer and digital indicator, voltage amplifier, current amplifier, power supply is electrically connected to be formed, single-chip microcomputer is electrically connected with the teletransmission control interface of table body, on the measuring sensor interface of table body or be connected with thermopair, or pressure transducer, or thermal resistance, thermopair is electrically connected with voltage amplifier, pressure transducer or be electrically connected with voltage amplifier, or be electrically connected with current amplifier, thermal resistance is electrically connected with current amplifier

2, a kind of intelligent digital shows multifunction instrument, it is characterized in that: it comprises the table body, on the table body, be provided with measuring sensor interface and teletransmission control interface, be built-in with controller at the table body, controller is by single-chip microcomputer and digital indicator, voltage amplifier, power supply is electrically connected to be formed, single-chip microcomputer is electrically connected with the teletransmission control interface of table body, on the measuring sensor interface of table body or be connected with thermopair or pressure transducer, thermopair is electrically connected with voltage amplifier, or pressure transducer is electrically connected with voltage amplifier.

3, a kind of intelligent digital shows multifunction instrument, it is characterized in that: it comprises the table body, is provided with measuring sensor interface and teletransmission control interface on the table body, be built-in with controller at the table body, controller is electrically connected with digital indicator, current amplifier, power supply by single-chip microcomputer to be formed, single-chip microcomputer is electrically connected with the teletransmission control interface of table body, on the measuring sensor interface of table body or be connected with thermal resistance or pressure transducer, thermal resistance is electrically connected with current amplifier, or pressure transducer is electrically connected with the electric current amplification.