CN201993614U

CN201993614U - Hydraulic measurement and control device of brick machine

Info

Publication number: CN201993614U
Application number: CN2010206757510U
Authority: CN
Inventors: 吴秀丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-23
Filing date: 2010-12-23
Publication date: 2011-09-28
Anticipated expiration: 2020-12-23

Abstract

The utility model relates to a hydraulic measurement and control device of a brick machine. A pressure sensor is adopted as a signal acquisition source, an output end of the pressure sensor is inputted into a single chip microcomputer control circuit via an A/D (analog/digital) data conversion circuit and is divided into three channels by the single chip microcomputer control circuit, the first channel is outputted via the single chip microcomputer control circuit to be connected with a loudspeaker, level of the second channel is outputted by the single chip microcomputer control circuit so that the second channel is connected with a relay via a triode and controls and drives an auxiliary motor contactor via a normally open switch of the relay, the third channel is outputted by the single chip microcomputer control circuit to be connected with an oscillating circuit consisting of two NE555 time base circuits with different frequencies, modulation signals outputted by the third channel flow through high-frequency modulation pulses generated by a driving circuit so that carrier wave alarm information is transmitted to a carrier wave host, the driving circuit consists of a triode, a transformer and a capacitor, the carrier wave alarm information is transmitted to a control system of the brick machine by the aid of carrier wave technology, and the control system automatically adjusts and controls pressure according to needs of brick making and guarantees that outputted pressure dynamics meet technical requirements of brick making.

Description

Brick machine hydraulic pressure measure and control device

Technical field

The utility model relates to a kind of measure and control device, and what be specifically related to is a kind of brick machine hydraulic pressure measure and control device.

Background technology

The brick machine mainly is made up of hydraulic system, formation system etc.And traditional pressure system only is applied to observe the tensimeter state, by the manually-operated electrical control mechanism, increase and decrease pressure control output because during brickmaking because of the starting material difference, required pressure is also different, so just to the brickmaking quality mix differ from uneven.

The utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of brick machine hydraulic pressure measure and control device is provided.

The technical scheme that the utility model adopted is such: brick machine hydraulic pressure measure and control device, adopts pressure sensor is as the acquired signal source, its output terminal is input to single chip machine controlling circuit through the A/D data converting circuit, divide three tunnel outputs through single chip machine controlling circuit, the first via connects loudspeaker by single chip machine controlling circuit output; The output level of secondary route single chip machine controlling circuit connects relay through triode, by relay normally open switch controlling and driving stand-by motor contactor; Third Road connects the oscillatory circuit of being made up of the NE555 time base circuit of two different frequencies by single chip machine controlling circuit output, and the modulation signal of its output sends the carrier wave warning message by the high frequency modulated pulse that the driving circuit of being made up of triode, transformer, electric capacity produces to the carrier wave main frame.

Described pressure transducer output connects the resistance of dividing potential drop over the ground, forms reference voltage circuit is set.

Described pressure transducer is installed on the brick pallets bottom.

Described A/D data converting circuit adopts the AD7714 integrated circuit.

By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: this device adopts pressure sensor is gathered pressure signal, after the A/D data-switching, export by Single-chip Controlling, be sent to brick machine control system by ZAP, according to the control of brickmaking needs automatic pressure regulation, guarantee that pressure output dynamics satisfies the brick-making technology requirement by control system.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment

Further specify the utility model below in conjunction with the drawings and specific embodiments.

As shown in Figure 1, brick machine hydraulic pressure measure and control device, adopts pressure sensor TM is as the acquired signal source, pressure transducer TM is installed on the brick pallets bottom, when the brick machine is started working, the brick compressing head to core rod slowly toward pressing down, controlled by limit switch, when the pressure transducer TM of supporting plate lower end is subjected to certain pressure at this moment, pressure transducer TM output signal is after 1 inner amplification of AD7714 integrated circuit (IC) and A/D translation data, be input to the 33rd of single chip machine controlling circuit IC2,34,37 pin composition data transmission circuits, by resistance 1R1,1R2 forms reference voltage circuit is set, be used to eliminate because of driving voltage changes the acquired signal error that forms, when the pressure that TM gathered is less than normal, after single chip machine controlling circuit IC2 internal processes control and treatment, divide two-way output, first via output is by the 2nd pin output low level of single chip machine controlling circuit IC2, and through resistance R 8 current limlitings, promotion loudspeaker BY sends and " ticks.。。" prompting sound, remind operating personnel to adjust pressure be set; The second tunnel output makes triode Q2 conducting by the 28th pin output high level of single chip machine controlling circuit IC2 through resistance R 7 current limlitings, relay J 1 adhesive, and normal open switch J1-1 transfers normally off to, and the contactor KM that promotes stand-by motor strengthens time of vibration; Third Road is by the high level drive signal of the 25th pin output of single chip machine controlling circuit IC2, and the oscillatory circuit that makes a NE555 time base circuit U1 connect two different frequencies of the 2nd NE555 time base circuit U2 composition enters duty.Constitute low-frequency oscillatory network by a NE555 time base circuit U1, its the 3rd pin output frequency is the low frequency signal of F1, the capacitor C 1 that oscillation frequency F1 is mainly connected by its output, resistance R 2 decisions, the 3rd pin output high level by a NE555 time base circuit U1, the high-frequency oscillating circuits work that the 2nd NE555 time base circuit U2 constitutes, its the 3rd pin is output as the pulse-modulated signal of F2, the capacitor C 3 that oscillation frequency F2 is mainly connected by its output, resistance R 4 decisions, and oscillation frequency F2 is much larger than F1, modulation signal by the output of the 2nd NE555 time base circuit U2 the 3rd pin passes through triode Q1, transformer BT, capacitor C 5, the driving circuit that capacitor C 6 is formed produces the high frequency modulated pulse on line of electric force, the high frequency modulated pulse voltage sends carrier data information to the carrier wave main frame.Behind the carrier receiver receiving demodulation,, after control system is handled, send corresponding steering order to hydraulic power unit again to brick machine control system data signal.

More than show and described ultimate principle of the present utility model and principal character and advantage thereof; the technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the explanation just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. brick machine hydraulic pressure measure and control device, it is characterized in that: adopts pressure sensor is as the acquired signal source, its output terminal is input to single chip machine controlling circuit through the A/D data converting circuit, divides three tunnel outputs through single chip machine controlling circuit, and the first via connects loudspeaker by single chip machine controlling circuit output; The output level of secondary route single chip machine controlling circuit connects relay through triode, by relay normally open switch controlling and driving stand-by motor contactor; Third Road connects the oscillatory circuit of being made up of the NE555 time base circuit of two different frequencies by single chip machine controlling circuit output, and the modulation signal of its output sends the carrier wave warning message by the high frequency modulated pulse that the driving circuit of being made up of triode, transformer, electric capacity produces to the carrier wave main frame.

2. brick machine hydraulic pressure measure and control device according to claim 1 is characterized in that: described pressure transducer output connects the resistance of dividing potential drop over the ground, forms reference voltage circuit is set.

3. brick machine hydraulic pressure measure and control device according to claim 1, it is characterized in that: described pressure transducer is installed on the brick pallets bottom.

4. brick machine hydraulic pressure measure and control device according to claim 1 is characterized in that: described A/D data converting circuit adopts the AD7714 integrated circuit.