CN103170403B - Data acquisition monitoring module and method for ball grinder group monitoring system - Google Patents
Data acquisition monitoring module and method for ball grinder group monitoring system Download PDFInfo
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- CN103170403B CN103170403B CN201310128682.XA CN201310128682A CN103170403B CN 103170403 B CN103170403 B CN 103170403B CN 201310128682 A CN201310128682 A CN 201310128682A CN 103170403 B CN103170403 B CN 103170403B
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Abstract
The invention belongs to the technical field of monitoring of running of large-size mine enterprise equipment, and in particular relates to a data acquisition monitoring module and method for a ball grinder group monitoring system. The data acquisition monitoring module for the ball grinder group monitoring system is characterized by comprising a data monitoring center, a data transmission device, a ball grinder group monitoring module and a network electric quantity metering module. The data acquisition monitoring module can acquire, monitor and transmit data of a ball grinder group, so that a plurality of large-size ball grinder groups of mine enterprises can be monitored; capacity expansion of base equipment can be eliminated; and comprehensive work of excessive data storage, optimal processing, intelligence determination, rational scheduling, comprehensive monitoring and the like can be finished in real time.
Description
Technical field
The invention belongs to large-scale mine business equipment operational monitoring technical field, especially relate to a kind of data acquisition and monitoring module and monitoring method thereof of ball grinder group monitoring system.
Background technology
Ball mill is the common equipment of mining production, in recent years, along with the expansion of mine capacity, when exploiting extensive, low-grade deposit, how to shorten factory flow configuration, improve disposal ability, this just proposes urgent requirement to the maximization of various grinding machine specification, energy-conservation and operating rate.In order to make the continuous fault-free operation of large-size ball mill, need the significant points to ball mill, or important technology parameter, as pressure, grinding charge plasmid degree, temperature, flow, liquid level, vibration and electricity etc. carry out Real-Time Monitoring.
Mostly the monitoring technology of existing large-scale mine enterprise to the ball grinder group in its each described mine is to adopt analog quantity transformation device to carry out data acquisition.1) this kind of data acquisition technology is the corresponding a set of transmitter of a parameter, and its collecting device is complicated, line is many.When gathering distant, to be as easy as rolling off a logly again interfered, and costly, reliability is low.2) adopt analog quantity transformation device to carry out data acquisition, sometimes can only do pointer gauge display.Individual data can be sent into PLC (Programmable Logic Controller) and become quantity process, and its cost of equipment is high, needs again specialized engineering skill personnel to write complicated dedicated program.3), when adopting analog quantity transformation device to carry out data acquisition and data processing, need again to be equipped with more computer and conversion equipment, its cost of equipment is also very high.
Summary of the invention
The object of this invention is to provide a kind of data acquisition and monitoring module and monitoring method thereof of ball grinder group monitoring system, the ball grinder group monitoring of large-scale multiple bargh can be realized, the dilatation of basic unit's equipment can be saved, the synthetic operation such as mass data harvesting, optimization process, wisdom decision-making, rational management, comprehensively supervision can be completed in real time.
The object of the invention is to be realized by following technical proposals:
The data acquisition and monitoring module of ball grinder group monitoring system of the present invention, is characterized in that comprising data monitoring center, data transmission device, ball grinder group monitoring modular, network module for metering electric quantity,
Described data monitoring center comprises industrial computer, therewith the data display screen that is connected of industrial computer,
Described data transmission device comprises power optical fiber or GPRS wireless telecommunications,
Described ball grinder group monitoring modular is made up of one group of ball mill unit monitoring modular, and described ball mill unit monitoring modular comprises the sensor be arranged on ball mill, therewith the network signal acquisition module that is connected of sensor,
Described network module for metering electric quantity comprises a group network electric quantity metering device controller, one group of using electricity system being connected of network electric quantity metering device controller therewith respectively, this group of using electricity system is by mains supply, described network electric quantity metering device controller comprises current sensor CT, voltage sensor PT, ASLC-electrical measurement special chip, keyboard, LCD display, RS485 interface, house dog, report to the police, clock circuit, DS18B20 temperature element, with the On-off signal signal end of Phototube Coupling, with the switching value output signal end of Phototube Coupling, with the constant current output current source of Phototube Coupling,
Described network signal acquisition module is connected with described power optical fiber or GPRS wireless telecommunications respectively with described network electric quantity metering device controller, and described power optical fiber or GPRS wireless telecommunications are connected with described industrial computer,
Sensor on described ball mill comprises the temperature sensor be located on ball mill, pressure sensor, vibrating sensor, particle size sensor, flow sensor, electrical quantity sensor and liquid level sensor,
Described network signal acquisition module comprises signal access unit, signal conversion unit, isolation amplifying unit, embedded micro computer,
Described signal access unit comprises " eight select one " chip UIN1, UIN2 and UIN3, gating signal QH, D
2, D
1and D
0control signal, the output terminals A be connected with described chip UIN1
1, the output terminals A be connected with described chip UIN2
2, the output terminals A be connected with described chip UIN3
3, described chip UIN1 is provided with input IN11 ~ IN18, and described chip UIN2 is provided with input IN21 ~ IN28, and described UIN3 is provided with input IN31 ~ IN38, described output terminals A
1, A
2and A
3be connected with described signal conversion unit,
Described signal conversion unit comprises reference voltage source Vout, resistance R1 ~ R11, electronic switch S1 ~ S7, latch SC, latch enable signal BX, impedance transformer GS1 ~ GS6, variable resistance W1, D
2, D
1and D
0control signal, signal conversion output B1, B2 and B3, described signal conversion output B1, B2 are connected with described isolation amplifying unit with B3,
Described isolation amplifying unit comprises isolated location U
1, Programmable Gain Amplifier Circuit, described isolated location U
1comprise conversion electric capacity C1 and C2, microelectronic digital single-pole double-throw switch (SPDT) KC11, KC12, KC21 and KC22, gating signal GL, the control signal D0 of microelectronic digital switch, described Programmable Gain Amplifier Circuit comprises accurate integrated operational amplifier U2, programmable resistive network U3, gain measurement circuit U 4, described programmable resistive network U3 is by digital regulation resistance SD1, SD2 and SD3 formed, and described gain measurement circuit U 4 comprises digital switch K1, K2, normal voltage Vb, the control signal D1 of digital switch
Described embedded micro computer comprises A/D converter, reference voltage source, dsp controller, memory, network interface, USB interface, DS18B20 one-wire bus formula digital temperature transmitter,
Described embedded micro computer is connected with described power optical fiber or GPRS wireless telecommunications.
Based on the monitoring method of the data acquisition and monitoring module of ball grinder group monitoring system, it is characterized in that: it comprises the steps:
A, on ball mill and ball mill hydrostatic bearing, one group of sensor is set according to different monitoring objectives, temperature sensor, pressure sensor, vibrating sensor, particle size sensor, flow sensor, electrical quantity sensor and liquid level sensor, in order to measuring tempeature, pressure, vibration, granularity, flow, electricity and liquid level, obtain sensor output signal through sensor;
B, sensor output signal enter network signal acquisition module, and feed IN11 ~ IN38 signal input part of signal access unit, simultaneously to signal access unit input QH gating signal, and D
2, D
1and D
0control signal, is transformed into standard voltage signal I through output terminals A by sensor output signal
1, A
2and A
3exporting, is strobe state when QH gating signal is low level; Described signal access unit comprises " eight select one " chip UIN1, UIN2 and UIN3, gating signal QH, D
2, D
1and D
0control signal, the output terminals A be connected with described chip UIN1
1, the output terminals A be connected with described chip UIN2
2, the output terminals A be connected with described chip UIN3
3, described chip UIN1 is provided with input IN11 ~ IN18, and described chip UIN2 is provided with input IN21 ~ IN28, and described chip UIN3 is provided with input IN31 ~ IN38, described output terminals A
1, A
2and A
3be connected with signal conversion unit;
Through output terminals A
1, A
2and A
3the standard voltage signal I exported feeds signal conversion unit, simultaneously to signal conversion unit input Vout reference voltage source, and D
2, D
1and D
0control signal, is transformed into standard voltage signal II through signal conversion output B by standard voltage signal I
1, B
2export with B3, select Vout=2.5V during enforcement, voltage ripple≤0.5%; Described signal conversion unit comprises reference voltage source Vout, resistance R1 ~ R11, electronic switch S1 ~ S7, latch SC, latch enable signal BX, impedance transformer GS1 ~ GS6, variable resistance W1, D
2, D
1and D
0control signal, signal conversion output B1, B2 and B3, described signal conversion output B1, B2 are connected with isolation amplifying unit with B3;
In order to make, signal is interference-free to be amplified, and standard voltage signal II is fed isolation amplifying unit, simultaneously to isolation amplifying unit input GL gating signal, and isolation control signal D
0and D
1, under the selected control of embedded micro computer, standard voltage signal II being transformed into amplified analog signal, is strobe state when GL gating signal is low level; Amplified analog signal enters embedded micro computer and carries out A/D conversion, converts analog signal to data signal, and data signal can carry out storing or be transferred to power optical fiber and GPRS wireless telecommunications after digital signal processor DSP process;
C, network module for metering electric quantity gather ball mill and ball mill hydrostatic bearing electricity, complete the metering of multiple electricity, process, storage and transmission;
The data that D, network signal acquisition module collect and the data that network module for metering electric quantity collects enter the data monitoring center of data acquisition and monitoring module through power optical fiber or GPRS wireless telecommunications, and feed the industrial computer at data monitoring center, show data by the data display screen that industrial computer is connected therewith, dispatch for management and running department;
Advantage of the present invention:
(1) the network smart data acquisition module gasifying device that ball mill unit monitoring modular have employed multichannel, multiple sensors directly inputs of ball grinder group monitoring system of the present invention, it can 8 passage photostat timesharing inputs, unified conversion, Capacitor apart, amplification able to programme, ± 18 A/D conversions and Intelligent treatment, are with the Internet Transmission of fieldbus (while available Mdobos and Plofibos-DP).This ball grinder group monitoring modular volume is little, use flexible, easy and simple to handle, highly versatile, intelligent network;
(2) the ball mill unit monitoring modular of ball grinder group monitoring system of the present invention, can realize real-time, comprehensive, the many reference amounts monitoring of the states such as pressure, grinding charge plasmid degree, temperature, flow, liquid level, vibration, electricity and on-the-spot operation.The data acquisition and monitoring module of monitoring system of the present invention is applicable to the multiple occasions such as detection and control, is network smart data monitor and forecast ideal device;
(3) the present invention is under smart cloud computing platform is supported, the ball grinder group monitoring of large-scale multiple bargh can be realized, the dilatation of basic unit's equipment can be saved, the synthetic operation such as mass data harvesting, optimization process, wisdom decision-making, rational management, comprehensively supervision can be completed in real time.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of data acquisition and monitoring module of the present invention.
Fig. 2 is Ball Mill System composition frame chart of the present invention.
Fig. 3 is ball mill structural representation of the present invention.
Fig. 4 is hydrostatic bearing hydraulic system principle figure of the present invention.
Fig. 5 is network signal acquisition module schematic diagram of the present invention.
Fig. 6 is signal access unit composition diagram of the present invention.
Fig. 7 is signal conversion unit composition diagram of the present invention.
Fig. 8 is that the present invention isolates amplifying unit composition diagram.
Fig. 9 is the embedded micro computer composition diagram of the present invention.
Figure 10 is network module for metering electric quantity schematic diagram of the present invention.
Figure 11 is network electric quantity metering device controller composition diagram of the present invention.
Detailed description of the invention
The specific embodiment of the present invention is further illustrated below in conjunction with accompanying drawing.
Data acquisition and monitoring module of the present invention is an important component part of ball grinder group monitoring system, can as the monitoring system of of large-scale mine enterprise subsidiary's ball grinder group.
The data acquisition and monitoring module of a kind of ball grinder group monitoring system of the present invention, is characterized in that comprising data monitoring center, data transmission device, ball grinder group monitoring modular, network module for metering electric quantity,
Described data monitoring center comprises industrial computer, therewith the data display screen that is connected of industrial computer,
Described data transmission device comprises power optical fiber or GPRS wireless telecommunications,
Described ball grinder group monitoring modular is made up of one group of ball mill unit monitoring modular, and described ball mill unit monitoring modular comprises the sensor be arranged on ball mill, therewith the network signal acquisition module that is connected of sensor,
As Figure 10, network module for metering electric quantity described shown in 11 comprises a group network electric quantity metering device controller, one group of using electricity system being connected of network electric quantity metering device controller therewith respectively, this group of using electricity system is by mains supply, described network electric quantity metering device controller comprises current sensor CT, voltage sensor PT, ASLC-electrical measurement special chip, keyboard, LCD display, RS485 interface, house dog, report to the police, clock circuit, DS18B20 temperature element, with the On-off signal signal end of Phototube Coupling, with the switching value output signal end of Phototube Coupling, with the constant current output current source of Phototube Coupling,
Described network signal acquisition module is connected with described power optical fiber or GPRS wireless telecommunications respectively with described network electric quantity metering device controller, and described power optical fiber or GPRS wireless telecommunications are connected with described industrial computer,
Ball grinder group can comprise multiple Ball Mill System, and a Ball Mill System is made up of ball mill and hydrostatic bearing two large divisions again, and Fig. 2 indicates the composition of Ball Mill System.Sensor on described ball mill comprises the temperature sensor be located on ball mill, pressure sensor, vibrating sensor, particle size sensor, flow sensor, electrical quantity sensor and liquid level sensor.Fig. 3 and Fig. 4 show respectively structure and the hydrostatic bearing Hydraulic System Principle of ball mill.Motor 8 drives travelling gear 4 to drive ball mill work as shown in Figure 3, will carry out flow detection at the discharging opening 1 of ball mill and charging aperture 6; Discharging opening 1 will carry out pulp granularity detection; Discharging opening hydrostatic bearing 2, cylinder 3, charging aperture hydrostatic bearing 5, charging aperture 6, reductor 7 and motor 8 will carry out vibrating and temperature detection; As shown in Figure 4, No. four pressure sensors are connected with discharge end main bearing shell with feed end main bearing shell respectively, can detect bearing shell charge oil pressure, will carry out oil temperature and level sensing in fuel tank.
Network signal acquisition module described as shown in Figure 5 comprises signal access unit, signal conversion unit, isolation amplifying unit, embedded micro computer,
As Fig. 6 show as described in signal access unit comprise " eight select one " chip UIN1, UIN2 and UIN3, gating signal QH, D
2, D
1and D
0control signal, the output terminals A be connected with described chip UIN1
1, the output terminals A be connected with described chip UIN2
2, the output terminals A be connected with described chip UIN3
3, described chip UIN1 is provided with input IN11 ~ IN18, and described chip UIN2 is provided with input IN21 ~ IN28, and described UIN3 is provided with input IN31 ~ IN38, described output terminals A
1, A
2and A
3be connected with described signal conversion unit, signal inputs into IN11 ~ IN18, IN21 ~ IN28, IN31 ~ IN38 input according to predetermined set, and according to the given instruction of the strobe state of table 1, obtains standard voltage signal I through A
1, A
2and A
3end exports.
Table 1 signal access unit signal gating state table (QH gating signal is 0)
As Fig. 7 show as described in signal conversion unit comprise reference voltage source Vout, resistance R1 ~ R11, electronic switch S1 ~ S7, latch SC, latch enable signal BX, impedance transformer GS1 ~ GS6, variable resistance W1, D
2, D
1and D
0control signal, signal conversion output B1, B2 and B3, described signal conversion output B1, B2 are connected with described isolation amplifying unit with B3.Through A
1, A
2and A
3the standard voltage signal I that end exports feeds signal conversion unit, simultaneously to signal conversion unit input Vout reference voltage source, and D
2, D
1and D
0control signal, is transformed into standard voltage signal II through B by standard voltage signal I
1, B
2export with B3 end, select Vout=2.5V during enforcement, voltage ripple≤0.5%; S1 ~ S7 state is determined, in table 2 by D2, D1 and D0 state; W1 is variable resistance, is used for regulation output value; GS1 ~ GS6 is impedance transformer, and the voltage that amplifier can be adopted during enforcement to be made is with tunnel device; B1, B2 and B3 are the output after signal conversion; By the signal after signal access unit under the control of embedded micro computer, can by signal Direct Transform specified standard signals such as mV, mA, thermal resistance, thermocouple, during enforcement, this standard signal can be 5V.
Table 2 switch S on-condition table (BX low level is this chip of gating)
As Fig. 8 show as described in isolation amplifying unit comprise isolated location U
1, Programmable Gain Amplifier Circuit, described isolated location U
1comprise conversion electric capacity C1 and C2, microelectronic digital single-pole double-throw switch (SPDT) KC11, KC12, KC21 and KC22, gating signal GL, the control signal D0 of microelectronic digital switch, described Programmable Gain Amplifier Circuit comprises accurate integrated operational amplifier U2, programmable resistive network U3, gain measurement circuit U 4, described programmable resistive network U3 is by digital regulation resistance SD1, SD2 and SD3 formed, and described gain measurement circuit U 4 comprises digital switch K1, K2, normal voltage Vb, the control signal D1 of digital switch
As Fig. 9 show as described in embedded micro computer comprise A/D converter, reference voltage source, dsp controller, memory, network interface, USB interface, DS18B20 one-wire bus formula digital temperature transmitter,
Described embedded micro computer is connected with described power optical fiber or GPRS wireless telecommunications.
Based on the monitoring method of the data acquisition and monitoring module of ball grinder group monitoring system, it is characterized in that: it comprises the steps:
A, on ball mill and ball mill hydrostatic bearing, one group of sensor is set according to different monitoring objectives, temperature sensor, pressure sensor, vibrating sensor, particle size sensor, flow sensor, electrical quantity sensor and liquid level sensor, in order to measuring tempeature, pressure, vibration, granularity, flow, electricity and liquid level, obtain sensor output signal through sensor;
B, sensor output signal enter network signal acquisition module, and feed IN11 ~ IN38 signal input part of signal access unit, simultaneously to signal access unit input QH gating signal, and D
2, D
1and D
0control signal, is transformed into standard voltage signal I through output terminals A by sensor output signal
1, A
2and A
3exporting, is strobe state when QH gating signal is low level; Described signal access unit comprises " eight select one " chip UIN1, UIN2 and UIN3, gating signal QH, D
2, D
1and D
0control signal, the output terminals A be connected with described chip UIN1
1, the output terminals A be connected with described chip UIN2
2, the output terminals A be connected with described chip UIN3
3, described chip UIN1 is provided with input IN11 ~ IN18, and described chip UIN2 is provided with input IN21 ~ IN28, and described chip UIN3 is provided with input IN31 ~ IN38, described output terminals A
1, A
2and A
3be connected with signal conversion unit;
Through output terminals A
1, A
2and A
3the standard voltage signal I exported feeds signal conversion unit, simultaneously to signal conversion unit input Vout reference voltage source, and D
2, D
1and D
0control signal, is transformed into standard voltage signal II through signal conversion output B by standard voltage signal I
1, B
2export with B3, select Vout=2.5V during enforcement, voltage ripple≤0.5%; Described signal conversion unit comprises reference voltage source Vout, resistance R1 ~ R11, electronic switch S1 ~ S7, latch SC, latch enable signal BX, impedance transformer GS1 ~ GS6, variable resistance W1, D
2, D
1and D
0control signal, signal conversion output B1, B2 and B3, described signal conversion output B1, B2 are connected with isolation amplifying unit with B3;
In order to make, signal is interference-free to be amplified, and standard voltage signal II is fed isolation amplifying unit, simultaneously to isolation amplifying unit input GL gating signal, and isolation control signal D
0and D
1, under the selected control of embedded micro computer, standard voltage signal II being transformed into amplified analog signal, is strobe state when GL gating signal is low level; Amplified analog signal enters embedded micro computer and carries out A/D conversion, converts analog signal to data signal, and data signal can carry out storing or be transferred to power optical fiber and GPRS wireless telecommunications after digital signal processor DSP process;
C, network module for metering electric quantity gather ball mill and ball mill hydrostatic bearing electricity, complete the metering of multiple electricity, process, storage and transmission;
The data that D, network signal acquisition module collect and the data that network module for metering electric quantity collects enter the data monitoring center of data acquisition and monitoring module through power optical fiber or GPRS wireless telecommunications, and feed the industrial computer at data monitoring center, show data by the data display screen that industrial computer is connected therewith, dispatch for management and running department.
Claims (2)
1. a data acquisition and monitoring module for ball grinder group monitoring system, is characterized in that comprising data monitoring center, data transmission device, ball grinder group monitoring modular, network module for metering electric quantity,
Described data monitoring center comprises industrial computer, therewith the data display screen that is connected of industrial computer,
Described data transmission device comprises power optical fiber or GPRS wireless telecommunications,
Described ball grinder group monitoring modular is made up of one group of ball mill unit monitoring modular, and described ball mill unit monitoring modular comprises the sensor be arranged on ball mill, therewith the network signal acquisition module that is connected of sensor,
Described network module for metering electric quantity comprises a group network electric quantity metering device controller, one group of using electricity system being connected of network electric quantity metering device controller therewith respectively, this group of using electricity system is by mains supply, described network electric quantity metering device controller comprises current sensor CT, voltage sensor PT, ASLC-electrical measurement special chip, keyboard, LCD display, RS485 interface, house dog, report to the police, clock circuit, DS18B20 temperature element, with the On-off signal signal end of Phototube Coupling, with the switching value output signal end of Phototube Coupling, with the constant current output current source of Phototube Coupling,
Described network signal acquisition module is connected with described power optical fiber or GPRS wireless telecommunications respectively with described network electric quantity metering device controller, and described power optical fiber or GPRS wireless telecommunications are connected with described industrial computer,
Sensor on described ball mill comprises the temperature sensor be located on ball mill, pressure sensor, vibrating sensor, particle size sensor, flow sensor, electrical quantity sensor and liquid level sensor,
Described network signal acquisition module comprises signal access unit, signal conversion unit, isolation amplifying unit, embedded micro computer,
Described signal access unit comprises " eight select one " chip UIN1, UIN2 and UIN3, gating signal QH, D
2, D
1and D
0control signal, the output terminals A be connected with described chip UIN1
1, the output terminals A be connected with described chip UIN2
2, the output terminals A be connected with described chip UIN3
3, described chip UIN1 is provided with input IN11 ~ IN18, and described chip UIN2 is provided with input IN21 ~ IN28, and described UIN3 is provided with input IN31 ~ IN38, described output terminals A
1, A
2and A
3be connected with described signal conversion unit,
Described signal conversion unit comprises reference voltage source Vout, resistance R1 ~ R11, electronic switch S1 ~ S7, latch SC, latch enable signal BX, impedance transformer GS1 ~ GS6, variable resistance W1, D
2, D
1and D
0control signal, signal conversion output B1, B2 and B3, described signal conversion output B1, B2 are connected with described isolation amplifying unit with B3,
Described isolation amplifying unit comprises isolated location U
1, Programmable Gain Amplifier Circuit, described isolated location U
1comprise conversion electric capacity C1 and C2, microelectronic digital single-pole double-throw switch (SPDT) KC11, KC12, KC21 and KC22, gating signal GL, the control signal D0 of microelectronic digital switch, described Programmable Gain Amplifier Circuit comprises accurate integrated operational amplifier U2, programmable resistive network U3, gain measurement circuit U 4, described programmable resistive network U3 is by digital regulation resistance SD1, SD2 and SD3 formed, and described gain measurement circuit U 4 comprises digital switch K1, K2, normal voltage Vb, the control signal D1 of digital switch
Described embedded micro computer comprises A/D converter, reference voltage source, dsp controller, memory, network interface, USB interface, DS18B20 one-wire bus formula digital temperature transmitter,
Described embedded micro computer is connected with described power optical fiber or GPRS wireless telecommunications.
2., based on a monitoring method for the data acquisition and monitoring module of ball grinder group monitoring system, it is characterized in that: it comprises the steps:
A, on ball mill and ball mill hydrostatic bearing, one group of sensor is set according to different monitoring objectives, temperature sensor, pressure sensor, vibrating sensor, particle size sensor, flow sensor, electrical quantity sensor and liquid level sensor, in order to measuring tempeature, pressure, vibration, granularity, flow, electricity and liquid level, obtain sensor output signal through sensor;
B, sensor output signal enter network signal acquisition module, and feed IN11 ~ IN38 signal input part of signal access unit, simultaneously to signal access unit input QH gating signal, and D
2, D
1and D
0control signal, is transformed into standard voltage signal I through output terminals A by sensor output signal
1, A
2and A
3exporting, is strobe state when QH gating signal is low level; Described signal access unit comprises " eight select one " chip UIN1, UIN2 and UIN3, gating signal QH, D
2, D
1and D
0control signal, the output terminals A be connected with described chip UIN1
1, the output terminals A be connected with described chip UIN2
2, the output terminals A be connected with described chip UIN3
3, described chip UIN1 is provided with input IN11 ~ IN18, and described chip UIN2 is provided with input IN21 ~ IN28, and described chip UIN3 is provided with input IN31 ~ IN38, described output terminals A
1, A
2and A
3be connected with signal conversion unit;
Through output terminals A
1, A
2and A
3the standard voltage signal I exported feeds signal conversion unit, simultaneously to signal conversion unit input Vout reference voltage source, and D
2, D
1and D
0control signal, is transformed into standard voltage signal II through signal conversion output B by standard voltage signal I
1, B
2export with B3, select Vout=2.5V during enforcement, voltage ripple≤0.5%; Described signal conversion unit comprises reference voltage source Vout, resistance R1 ~ R11, electronic switch S1 ~ S7, latch SC, latch enable signal BX, impedance transformer GS1 ~ GS6, variable resistance W1, D
2, D
1and D
0control signal, signal conversion output B1, B2 and B3, described signal conversion output B1, B2 are connected with isolation amplifying unit with B3;
In order to make, signal is interference-free to be amplified, and standard voltage signal II is fed isolation amplifying unit, simultaneously to isolation amplifying unit input GL gating signal, and isolation control signal D
0and D
1, under the selected control of embedded micro computer, standard voltage signal II being transformed into amplified analog signal, is strobe state when GL gating signal is low level; Amplified analog signal enters embedded micro computer and carries out A/D conversion, converts analog signal to data signal, and data signal can carry out storing or be transferred to power optical fiber and GPRS wireless telecommunications after digital signal processor DSP process;
C, network module for metering electric quantity gather ball mill and ball mill hydrostatic bearing electricity, complete the metering of multiple electricity, process, storage and transmission;
The data that D, network signal acquisition module collect and the data that network module for metering electric quantity collects enter the data monitoring center of data acquisition and monitoring module through power optical fiber or GPRS wireless telecommunications, and feed the industrial computer at data monitoring center, show data by the data display screen that industrial computer is connected therewith, dispatch for management and running department.
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| CN103170403B true CN103170403B (en) | 2015-07-01 |
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Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Angang Group Mine Company |