CN102251808B - Safety monitoring terminal device for mine motor - Google Patents
Safety monitoring terminal device for mine motor Download PDFInfo
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- CN102251808B CN102251808B CN201110098221.3A CN201110098221A CN102251808B CN 102251808 B CN102251808 B CN 102251808B CN 201110098221 A CN201110098221 A CN 201110098221A CN 102251808 B CN102251808 B CN 102251808B
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Abstract
The invention relates to a safety monitoring terminal device for a mine motor and belongs to the field of monitoring, and the device provided by the invention is designed for solving the problem that monitoring through the existing mine motor can not transmit acquired data to technical staff immediately. The safety monitoring terminal device comprises a single-chip microcomputer processing module, a field data acquisition module, a failure execution module, a communication processing module, a human-computer interaction module and an I2C (intel-integrated circuit) interface peripheral module, wherein the communication processing module comprises a wireless communication module and a 485 communication module, the human-computer interaction module comprises a keyboard interface circuit and a liquid crystal display circuit, and the I2C interface peripheral module comprises a system calendar circuit and an external expansion storage circuit; the field data acquisition module is used for acquiring the three-phase alternating current voltage, alternating current and frequency of the motor and sending to the single-chip microcomputer processing module, and the acquired data is sent to a PC (personal computer) of a monitoring center through the 485 communication module; the wireless communication module is used for sending short messages to a mobile phone user of a monitoring center through a GSM (global system for mobile communication) network; and the output end of the failure execution module is connected with the control end of a contactor used for controlling the operation of the motor.
Description
Technical field
The present invention relates to a kind of safety monitoring terminal device for mine motor, belong to monitoring field.
Background technology
The working environment very severe of mine, the damage ratio of electric fixtures is higher, and, between Control Room in Minepit environment and working site, also all there is certain distance, and the data that existing mine motor the protects the monitoring system all adopts wire transmission to gather, this setup caused the real-time of data communication and antijamming capability low, and the protection system for motor great majority that use in existing mine are mounted in the JDB series protector in explosion-isolated vacuum magnetic starter, this series comprehensive protector mostly is independent component, analog circuit low precision, fault rate is high.And can only upload the data in the PC of Control Room, can not send relevant leader or technician the very first time to judge.
Summary of the invention
The present invention seeks to protection system for motor, cannot the very first time send the data of collection to relevant leader or the problem of technician to judge in order to solve the mine of existing employing wire transmission.A kind of safety monitoring terminal device for mine motor is provided.
A kind of safety monitoring terminal device for mine motor of the present invention, it comprises single chip processing module, on-site data gathering module, fault Executive Module, Communication processing module, human-computer interaction module and I
2c interface peripheral module;
Communication processing module comprises wireless communication module and 485 communication modules, and human-computer interaction module comprises keyboard interface circuit and liquid crystal display circuit, I
2c interface peripheral module comprises system calendar circuit and extends out memory circuit;
On-site data gathering module gathers three-phase alternating voltage signal, three-phase alternating current signal and the frequency signal of motor, the signal output part of on-site data gathering module is connected with the collection signal input of single chip processing module, the data input/output terminal of single chip processing module is connected with the data input/output terminal of 485 communication modules, the data of the motor that 485 communication modules employing RS-485 buses collect this terminal device send to the PC of Surveillance center, and 485 communication modules receive order and the data of PCs;
The note output of single chip processing module is connected with the note input of wireless communication module, and wireless communication module sends to note by GSM network the cellphone subscriber of Surveillance center;
The parameter of single chip processing module arranges input and is connected with the output of keyboard interface circuit;
The data of single chip processing module show that output is connected with the input of liquid crystal display circuit;
The set of time output of single chip processing module is connected with the input of system calendar circuit;
The storage output of single chip processing module is connected with the input that extends out memory circuit;
The troubleshooting signal output part of single chip processing module is connected with the input of fault Executive Module, and the output of fault Executive Module is connected with the control end of controlling the contactor of motor operation.
Advantage of the present invention: low-power-consumption intelligent mine motor safety monitoring device of the present invention; it adopts digitlization, modularization and Radio Transmission Technology; can not only be accurately, reaction motor fault and abnormal operating condition reliably; according to actual conditions, fault is in various degree taked the measures such as fast trip or warning; and field condition can be uploaded to Surveillance center can also notify at once to monitor staff by short message mode; Accident prevention further expands; thereby the economic loss that the serious accident of avoiding and unnecessary shutdown cause, guarantees production safety operation.
Not only multiple functional, monitoring accurately, antijamming capability by force, also utilizes network, is convenient to expansion, and transplantability is good.The present invention can be applied to the mine motor monitoring of circumstance complication or the motor monitoring of other industrial circles.
Accompanying drawing explanation
Fig. 1 is the structure of block diagram schematic diagram of safety monitoring terminal device for mine motor of the present invention;
Fig. 2 is the physical circuit figure of single chip processing module;
Fig. 3 is the physical circuit figure of on-site data gathering module;
Fig. 4 is the physical circuit figure of fault Executive Module;
Fig. 5 is the physical circuit figure of Communication processing module;
Fig. 6 is the physical circuit figure of human-computer interaction module;
Fig. 7 is I
2the physical circuit figure of C interface peripheral module;
Fig. 8 is the workflow diagram of described safety monitoring terminal device for mine motor.
The specific embodiment
The specific embodiment one: present embodiment is described below in conjunction with Fig. 1 to Fig. 8, a kind of safety monitoring terminal device for mine motor of embodiment, it comprises single chip processing module 1, on-site data gathering module 2, fault Executive Module 3, Communication processing module 4, human-computer interaction module 5 and I
2c interface peripheral module 6;
On-site data gathering module 2 gathers three-phase alternating voltage signal, three-phase alternating current signal and the frequency signal of motor, the signal output part of on-site data gathering module 2 is connected with the collection signal input of single chip processing module 1, the data input/output terminal of single chip processing module 1 is connected with the data input/output terminal of 485 communication module 4-2, the data of the motor that 485 communication module 4-2 employing RS-485 buses collect this terminal device send to the PC of Surveillance center, and 485 communication module 4-2 receive order and the data of PCs;
The note output of single chip processing module 1 is connected with the note input of wireless communication module 4-1, and wireless communication module 4-1 sends to note by GSM network the cellphone subscriber of Surveillance center;
The parameter of single chip processing module 1 arranges input and is connected with the output of keyboard interface circuit 5-1;
The data of single chip processing module 1 show that output is connected with the input of liquid crystal display circuit 5-2;
The set of time output of single chip processing module 1 is connected with the input of system calendar circuit 6-1;
The storage output of single chip processing module 1 is connected with the input that extends out memory circuit 6-2;
The troubleshooting signal output part of single chip processing module 1 is connected with the input of fault Executive Module 3, and the output of fault Executive Module 3 is connected with the control end of controlling the contactor of motor operation.
Described single chip processing module 1 comprises the reset circuit, clock circuit of assurance system normal operation and provides the jtag circuit of online programming for low-power scm.It is the single-chip microcomputer of MSP430F449 that single-chip microcomputer in single chip processing module 1 is selected model.
Wireless communication module 4-1 adopts gsm module-TC35i modular circuit.
485 communication module 4-2 are RS-485 half duplex series communication interface chip.
Described on-site data gathering module 2 comprises motor A, B, C three-phase alternating voltage and current effective value, the measurement of real-time frequency, indirect calculation is gone out to the parameters such as active power, reactive power and power factor.Described fault Executive Module 3 can be according to the situation of actual acquired data is taked to fast trip and sound and light alarm measure to fault in various degree.
1) RS-485 half duplex series communication interface, for the monitor network of multiple electric motors protective device and master control PC formation RS-485 bus.Complete and monitor PC and comprise to host computer and transmit motor in real time and history run parameter and failure logging information; Accept various control commands and data that host computer sends, thereby realize long-range setting and the monitoring of motor operation Parameter On-line of protective device Protection parameters.
2) wireless communication module 4-1 adopts gsm module-TC35i modular circuit to complete wireless data load mode.Utilize SMS service in gsm system, when electrical fault occurs, can notify to technician or relevant leader by the SMS very first time, with the timely processing of the accident of accomplishing, reduce the loss.
Described human-computer interaction module 5 comprises: the LCD interface circuit 5-2 that the keyboard interface circuit 5-1 setting for on-site parameters and on-the-spot real time data, protection classification show.
Described I
2c interface peripheral module 6 comprises: the system time calendar interface circuit 6-1 of this device required time and date and time information and storage data extend out memory circuit 6-2, all adopt I
2c interface mode.
The specific works process of present embodiment device: after A, B, C three-phase alternating voltage and the current acquisition of on-site data gathering module 2 during by machine operation, by the A/D port in single chip processing module 1, enter, through calculating the virtual value of voltage, electric current and the calculating of real-time frequency.The parameters such as active power, reactive power and power factor when recycling formula indirect calculation goes out machine operation judge the whether normal theoretical foundation of machine operation to be ready for use on.When motor works, data are uploaded to the PC of Surveillance center by the RS-485 half duplex series communication interface in Communication processing module 4, by the LCD interface circuit 5-2 in human-computer interaction module 5, carry out data demonstration simultaneously.When motor breaks down, single chip processing module 1 can be according to taking fast trip to cut off the electricity supply and sound and light alarm measure to fault in various degree by fault Executive Module 3 to the situation of actual acquired data.When being uploaded to Surveillance center's PC by the RS-485 half duplex series communication interface in Communication processing module 4, passes through fault message the gsm module-TC35i modular circuit in Communication processing module 4, utilize SMS service in gsm system, notify to technician or relevant leader by the SMS very first time, with the timely processing of the accident of accomplishing, reduce the loss.The protection classification that also can take by human-computer interaction module 5 LCD interface circuit 5-2 displaying scenes at the scene.Keyboard interface circuit 5-1 in human-computer interaction module 5 sets for on-site parameters.I
2system time calendar interface circuit 6-1 in C interface peripheral module 6 completes the information on this device required time and date, extends out memory circuit 6-2 for storing field data and having power down preventing safeguard measure, in case data are lost when power down.
The hardware implement process of this invention is described in conjunction with Fig. 2 to Fig. 7.Hardware circuit is comprised of six parts altogether, mutually corresponding with Fig. 1 each several part respectively.Comprise that Part1 is the physical circuit of single chip processing module 1, specifically referring to Fig. 2; Part2 is the physical circuit of on-site data gathering module 2, specifically referring to Fig. 3; Part3 is the physical circuit of fault Executive Module 3, specifically referring to Fig. 4; Part4 is the physical circuit of Communication processing module 4, specifically referring to Fig. 5; Part5 is the physical circuit of human-computer interaction module 5, specifically referring to Fig. 6; Part6 is I
2the physical circuit of C interface peripheral module 6, specifically referring to Fig. 7.
Part1: the physical circuit of single chip processing module 1, adopt low-power scm MSP430F449 as the control core of system, single-chip microcomputer adopts two clocks inputs, both clock signal Y1 of a 32KHz, the clock signal Y2 of a 8MHz.C13, C14, C17, C18 are power filtering capacitor, and these four power filtering capacitors join with the power pin 1,100,10 of single-chip microcomputer respectively, for reducing the input ripple interference to the power supply of single-chip microcomputer power supply.U13 is jtag interface chip, join with 90～93 pins of single-chip microcomputer respectively and then realize single-chip microcomputer on-line debugging routine interface is provided, wherein J1 can not be connected as power interface with J2 simultaneously, when JTAG is used external power source, two pin short circuits of J1 are connected, when external power source is not enough, the power supply that at this moment can provide with JTAG, at this moment connects two pin short circuits of J2.
Part2: the physical circuit of on-site data gathering module 2, comprises the Real-time Collection of three-phase voltage, current acquisition and frequency.
Three-phase voltage Acquisition Circuit: Va-in, Vb-in, Vc-in is respectively the input of motor three-phase voltage, take A phase voltage Va-in as example explanation particular circuit configurations: T1 be potential transformer, output signal is the alternating voltage of 0～100V, the voltage signal of this potential transformer output is through resistance R 1, after the dividing potential drop of R2 as the input signal of amplifier U1A, this amplifier U1A adopts and penetrates the input impedance that the level mode of following improves circuit, this amplifier U1A will export to the phase inverter being comprised of amplifier U1B after the signal shaping of input, the multiplication factor of this phase inverter regulates by adjustable potentiometer R20, the adder that amplifier U4 forms is carried out anti-phase summation by signal and the 1.5V reference voltage REF of the phase inverter output being comprised of amplifier U4, obtain the output signal of 0～3V, this output signal sends to an input end of analog signal mouth P6.0 of the inside A/D converter of single-chip microcomputer MSP430F449 in Part1 to carry out analog-to-digital conversion.Equally, B phase C phase voltage enters respectively input end of analog signal mouth P6.1 and the P6.2 of the inside A/D converter of single-chip microcomputer MSP430F449 after conversion.
Three-phase current Acquisition Circuit: Ia-in, Ib-in, Ic-in is respectively the input of motor three-phase current, take A phase current Ia-in as example explanation particular circuit configurations: T4 be current transformer, output signal is the alternating current of 0～5A, R23 is sampling resistor, described ac current signal is converted to voltage signal, C7 is filter capacitor, amplifier U2C forms voltage follower, described voltage signal is exported to the inverting amplifier being comprised of amplifier U2D after this voltage follower conversion improves input impedance, after the signal of this inverting amplifier output, export to the in-phase end of the adder being formed by amplifier U8, and carry out anti-phase summation with voltage reference signal REF, obtain the output signal of 0～3V, the input end of analog signal mouth P6.3 that this output signal inputs to the inside A/D converter of single-chip microcomputer MSP430F449 in Part1 carries out analog-to-digital conversion.Equally, B phase C phase current enters respectively input end of analog signal mouth P6.4 and the P6.5 of the inside A/D converter of single-chip microcomputer MSP430F449 after conversion.
The Real-time Collection of frequency adopts frequency measurement circuit to realize, this frequency measurement circuit act on AC sampling time, accurate for guaranteeing data, can adjust the sampling period by the variation of real-time tracking frequency.Frequency measurement circuit of the present invention is partly comprised of filter circuit, zero passage comparison circuit, photoelectric isolating device etc.The input signal of this frequency measurement circuit is the sine wave signal Ua-out from motor outlet potential transformer, this sine wave signal Ua-out process is by R36, C10 and R38, the two-stage low-pass filter circuit filtering that C11 forms, after filtering high-frequency interferencing signal wherein, export to the zero-crossing comparator being formed by amplifier U11A, the zero crossing that this zero-crossing comparator completes synchronizing voltage detects, the sine wave signal of input is shaped as to the square-wave signal of same frequency, form synchronous square-wave signal, this square-wave signal is exported to photoelectric isolating device U12, after this photoelectric isolating device U12 isolation, the square-wave signal of output is exported to the CA0 mouth P1.6 of single-chip microcomputer for measuring-signal frequency.
Part3: the physical circuit of fault Executive Module 3.When motor breaks down, adopt warning circuit to realize and report to the police, adopt circuit for controlling motor to disconnect machine operation power supply simultaneously, stop machine operation.Wherein, warning circuit adopts buzzer U7 to realize audible alarm, and this buzzer U7 is driven by positive-negative-positive triode Q1.Circuit for controlling motor adopts photoelectric isolating circuit D14 and relay J DQ1 to realize, the input of photoelectric isolating circuit D14 receives the alarm signal of input, 6 output signal driving N PN type triode Q2 of the isolation output of this photoelectric isolating circuit D14, this triode Q2 drives the coil working of relay J DQ1, two contact 6 pin of a switch and 7 pin of this relay J DQ1 are connected on by interface J9 in the power supply loop of motor, for controlling the break-make of the working power of motor.
Part4: the physical circuit of Communication processing module 4.1 pin, 4 pin of the responsible RS-485 half duplex series communication interface chip U17 that data are uploaded in real time join with 62 pin and 63 pin of single-chip microcomputer MSP430F449 respectively, and 2,3 pin of U17 join with the 51 pin P4.2 of MSP430F449 as control end simultaneously.
Utilize SMS service in gsm system, when motor breaks down, by the SMS very first time, notify the ZIF connector J1 by 40 pins to technician or relevant leader's TC35i modular circuit outside to control TC35i module.1～5 pin of J1 is battery power supply BATT+, meets VCC-5V, and in the present invention, VCC-5V is 5V power supply, sends the required 2A electric current of note, so chip U15 provides the power supply VCC-5V of 2A electric current for TC35i module.6～10 pin of J1 are the power supply ground of digital circuit working power.That the SIM card seat of TC35i module adopts is 8 pin Molex seat J2.28 pin of J1,29 pin join with 1,4 pin of J2 respectively, and for SIM card, J2 provides working power; Whether 24 pin of J1 and 8 pin of J2 join installs for detection of SIM card; 25 pin of J1 and 2 pin of J2 join for system reset; 26 pin of J1,27 pin join for the transmission of SIM card and TC35i intermodular data with 6 pin, 3 pin of J2 respectively.The signal of the 73 pin outputs of single-chip microcomputer MSP430F449 is exported to 15 pin of J1 after triode Q3 drives; 74 pin of single-chip microcomputer MSP430F449,75 pin join for the transmission of single-chip microcomputer and TC35i intermodular data with 18 pin, 19 pin of J1 respectively.32 toes of J1 show the duty of TC35i.When D31 extinguishes, show that TC35i is in closing or sleep state; When D31 be 600ms bright, while putting out alternately, show that SIM card is not inserted or TC35i is carrying out network entry; When D31 be 75ms bright-3s is while putting out cycle alternation, shows TC35i login, in holding state.
Part5: the physical circuit of human-computer interaction module 5, this circuit is comprised of keyboard and LCD interface, wherein keyboard is 4 * 4 matrix keyboards, 4 lines of this matrix keyboard S1～S16 join with 22 pin～25 pin of single-chip microcomputer MSP430F449 respectively, and 4 alignments of this matrix keyboard join with 26 pin～29 pin of single-chip microcomputer MSP430F449 respectively.U16 is LCD interface, 1 pin of U16 connects power supply ground, 2 pin connect power supply, 4 pin～6 pin respectively with single-chip microcomputer MSP430F449 for showing that 50 pin, 49 pin and 48 pin of control join, 7 pin～14 pin join as demonstration data output end 30 pin～37 pin of Concurrent Display data and single-chip microcomputer MSP430F449, and 15 pin connect power supply and represent to adopt parallel convey.
Part6:I
2the physical circuit of C interface peripheral module 6.U18 is clock module, and what adopted low-power consumption has a work I
2cMOS real-time clock/the calendar chip of C interface, being mainly used to provides correct time to system.5 pin of U18,6 pin join with 66 pin and 67 pin of single-chip microcomputer MSP430F449 respectively.What U19 memory module adopted is also to have I
2the chip of C interface, its 5 pin, 6 pin join with 64 pin and 65 pin of single-chip microcomputer MSP430F449 respectively, complete the transmission of data.
The software execute process of present embodiment device is described referring to Fig. 8.After system boot, system initializes.Initialization comprise flag bit and variable initialize, start timer, open interruptions, serial communication setting, liquid crystal display initialize setting, reading system running parameter, the set of the software counter that will use when working method ，RAM district all operation of each interface chip is set and various input/output ports and reset etc.In general system initialization routine only need to be carried out once just passable.
Self check checks system hardware and running status thereof exactly comprehensively.Self check comprises RAM read-write check, definite value self check, EPROM self check and output channel thereof (outlet trip(ping) circuit) self check.Self check is the guardian technique measure that system protection reliability, safety obtain basic assurance, can find rapidly the soft and hardware fault of protective device by self check, if self check is normal, main program continues to carry out downwards; Otherwise device alarm latch-up protection, wait for that professional checks.
Open data sampling and interrupt, the initialization of executing data and collection, to each banner word, counter O reset, carry out address assignment to sampled data buffer area.Then judged whether that key presses, if there is key to press the next button service routine that goes to carry out, according to corresponding programs such as key assignments execution parameter settings, next judged whether call duration time arrives, if call duration time is to executive communication program, completed data upload function.After program completes, return to main program, if relay protection startup detected, be masked as 1, enter relay protection handling procedure; If relay protection startup detected, be masked as 0, return to main program.If fault diagnosis startup detected, be masked as 1, enter fault diagnostic program, if detect, start and be masked as 0, return to main program.
Relay protection handling procedure has been mainly that the algorithm of data calculating, various protections calculates and protection is differentiated, Trip Logic judgement, the functions such as arrangement of alarm and outlet trip avoidance function and event report, Trouble Report.Wherein, it has been the nucleus module of defencive function that the algorithm of protection calculates, and the operating criterion that main contents have fault signature amount to calculate, protect calculates, fault type judgement.Can according to protection criterion, evaluation and setting value be compared according to read in real-time evaluation from A/D sampling interrupt routine, thus the fault of having judged whether.If there is no fault, turn back to major cycle; If there is fault, as the case may be, determine to report to the police or tripping operation,, by starting mobile phone alarm handling procedure, fault type was notified to technician or relevant leader by the SMS very first time meanwhile, with the timely processing of the accident of accomplishing, reduce the loss.
Mobile phone alarm handling procedure, by write different AT instructions to TC35i, completes after network entry, telephone number in single-chip microcomputer reading SIM card, fault type is uploaded in number.Certainly, device also can receive SMS message, and single-chip microcomputer receives while ordering by TC35i, first wants key, if met the requirements, will outgoi8ng data, and if do not met, delete information.Short message is set and adopts the UCS2 coding in PDU coding, for sending Unicode coding.
Mobile phone alarm handling procedure is sent completely after the troubleshooting tasks such as protection, tripping operation, carries out full resetting operation, all signs of zero clearing and operational order, and protection device turns back to the state before fault, for protection is next time moved ready.After getting back to major cycle, judge whether power down preventing sign is 1, during every 1 minute of time, power down preventing is masked as 1 by data storage once, to prevent from causing due to temporary system power-off the situation of obliterated data, returns to the circulation of major cycle original position and carry out after execution.
Safety monitoring terminal device for mine motor of the present invention is low in energy consumption, and can notify related personnel by the short message mode very first time, and transplantability is good, easy for installation.
The specific embodiment two: present embodiment is described further embodiment, it also comprises indicating fault alarm module 7, the fault-signal input of indicating fault alarm module 7 is connected with the fault-signal output of single chip processing module 1.
Claims (9)
1. a safety monitoring terminal device for mine motor, is characterized in that, it comprises single chip processing module (1), on-site data gathering module (2), fault Executive Module (3), Communication processing module (4), human-computer interaction module (5) and I
2c interface peripheral module (6);
Communication processing module (4) comprises wireless communication module (4-1) and 485 communication modules (4-2), and human-computer interaction module (5) comprises keyboard interface circuit (5-1) and liquid crystal display circuit (5-2), I
2c interface peripheral module (6) comprises system calendar circuit (6-1) and extends out memory circuit (6-2);
On-site data gathering module (2) gathers the three-phase alternating voltage signal of motor, three-phase alternating current signal and frequency signal, the signal output part of on-site data gathering module (2) is connected with the collection signal input of single chip processing module (1), the data input/output terminal of single chip processing module (1) is connected with the data input/output terminal of 485 communication modules (4-2), the data of the motor that 485 communication modules (4-2) employing RS-485 bus collects this terminal device send to the PC of Surveillance center, 485 communication modules (4-2) receive order and the data of PC,
The note output of single chip processing module (1) is connected with the note input of wireless communication module (4-1), and wireless communication module (4-1) sends to note by GSM network the cellphone subscriber of Surveillance center;
The parameter of single chip processing module (1) arranges input and is connected with the output of keyboard interface circuit (5-1);
The data of single chip processing module (1) show that output is connected with the input of liquid crystal display circuit (5-2);
The set of time output of single chip processing module (1) is connected with the input of system calendar circuit (6-1);
The storage output of single chip processing module (1) is connected with the input that extends out memory circuit (6-2);
The troubleshooting signal output part of single chip processing module (1) is connected with the input of fault Executive Module (3), and the output of fault Executive Module (3) is connected with the control end of controlling the contactor of motor operation,
It is the single-chip microcomputer of MSP430F449 that single-chip microcomputer in single chip processing module (1) is selected model; 485 communication modules (4-2) are RS-485 half duplex series communication interface chip; Wireless communication module (4-1) is gsm module-TC35i modular circuit.
2. a kind of safety monitoring terminal device for mine motor according to claim 1, it is characterized in that, it also comprises indicating fault alarm module (7), and the fault-signal input of indicating fault alarm module (7) is connected with the fault-signal output of single chip processing module (1).
3. a kind of safety monitoring terminal device for mine motor according to claim 1, is characterized in that, the process that on-site data gathering module (2) gathers the three-phase alternating voltage signal of motor is:
Va-in, Vb-in, Vc-in is respectively the input of motor three-phase voltage, the gatherer process of A cross streams voltage Va-in: T1 is potential transformer, output signal is the alternating voltage of 0～100V, the voltage signal of this potential transformer output is through resistance R 1, after the dividing potential drop of resistance R 2 as the input signal of amplifier U1A, this amplifier U1A adopts and penetrates the input impedance that the level mode of following improves circuit, this amplifier U1A will export to the phase inverter being comprised of amplifier U1B after the signal shaping of input, the multiplication factor of this phase inverter regulates by adjustable potentiometer R20, the adder that amplifier U4 forms is carried out anti-phase summation by signal and the 1.5V reference voltage REF of the phase inverter output being comprised of amplifier U1B, obtain the output signal of O～3V, this output signal sends to an input end of analog signal mouth P6.0 of the inside A/D converter of single-chip microcomputer MSP430F449 in single chip processing module (1) to carry out analog-to-digital conversion, and then obtain A cross streams voltage Va-in, in like manner, B phase voltage enters respectively the input end of analog signal mouth P6.1 of the inside A/D converter of single-chip microcomputer MSP430F449 after conversion, obtains B cross streams voltage Vb-in, C phase voltage enters respectively the input end of analog signal mouth P6.2 of the inside A/D converter of single-chip microcomputer MSP430F449 after conversion, obtains C cross streams voltage Vc-in.
4. a kind of safety monitoring terminal device for mine motor according to claim 1, is characterized in that, the gatherer process that on-site data gathering module (2) gathers the three-phase alternating current signal of motor is:
Ia-in, Ib-in, Ic-in are respectively the input of motor three-phase current, the acquisition process of A cross streams electric current I a-in is: T4 is current transformer, R23 is sampling resistor, output signal is the alternating current of 0～5A, this ac current signal is converted to voltage signal, and this voltage signal is exported to the inverting amplifier being comprised of amplifier U2D after this voltage follower conversion improves input impedance, wherein: C7 is filter capacitor, amplifier U2C forms voltage follower
After the signal of this inverting amplifier output, export to the in-phase end of the adder being formed by amplifier U8, and carry out anti-phase summation with voltage reference signal REF, obtain the output signal of O～3V, the input end of analog signal mouth P6.3 that this output signal inputs to the inside A/D converter of single-chip microcomputer MSP430F449 in single chip processing module (1) carries out analog-to-digital conversion and then obtains A cross streams electric current I a-in; In like manner, B phase current enters respectively the input end of analog signal mouth P6.3 of the inside A/D converter of single-chip microcomputer MSP430F449 after conversion, obtains B cross streams current Ib-in; C phase current enters respectively the input end of analog signal mouth P6.4 of the inside A/D converter of single-chip microcomputer MSP430F449 after conversion, obtains C cross streams electric current I c-in.
5. a kind of safety monitoring terminal device for mine motor according to claim 1, is characterized in that, the process that on-site data gathering module (2) gathers the frequency signal of motor is:
When AC sampling, utilize the variation of frequency measurement circuit real-time tracking frequency to adjust the sampling period, described frequency measurement circuit is by filter circuit, zero passage comparison circuit and photoelectric isolating device form, the input signal of this frequency measurement circuit is the sine wave signal Ua-out from motor outlet potential transformer, this sine wave signal Ua-out process is by resistance R 36, capacitor C 10 and resistance R 38, the two-stage low-pass filter circuit filtering that capacitor C 11 forms, after filtering high-frequency interferencing signal wherein, export to the zero-crossing comparator being formed by amplifier U11A, the zero crossing that this zero-crossing comparator completes synchronizing voltage detects, the sine wave signal of input is shaped as to the square-wave signal of same frequency, form synchronous square-wave signal, this square-wave signal is exported to photoelectric isolating device U12, after this photoelectric isolating device U12 isolation the square-wave signal of output export to single chip processing module (1) in the CA0 mouth P1.6 of single-chip microcomputer, carry out real-time measuring frequency signal.
6. a kind of safety monitoring terminal device for mine motor according to claim 1, is characterized in that, the process that fault Executive Module (3) is realized fault alarm is:
When motor breaks down, adopt warning circuit to realize and report to the police, adopt circuit for controlling motor to disconnect machine operation power supply simultaneously, stop machine operation;
Warning circuit adopts buzzer U7 to realize audible alarm, this buzzer U7 is driven by positive-negative-positive triode Q1, circuit for controlling motor adopts photoelectric isolating circuit D14 and relay J DQ1 to realize, the input of photoelectric isolating circuit D14 receives the alarm signal of input, 6 output signal driving N PN type triode Q2 of the isolation output of this photoelectric isolating circuit D14, this triode Q2 drives the coil working of relay J DQ1, two contact 6 pin of a switch and 7 pin of this relay J DQ1 are connected in the power supply loop of motor by interface J9, for controlling the break-make of the working power of motor.
7. a kind of safety monitoring terminal device for mine motor according to claim 1, is characterized in that, the specific works process of Communication processing module (4) is:
1 pin, 4 pin of the responsible RS-485 half duplex series communication interface chip U17 that data are uploaded in real time join with 62 pin and 63 pin of single chip processing module (1) single-chip microcomputer MSP430F449 respectively, 2,3 pin of U17 join with the 51 pin P4.2 of MSP430F449 as control end simultaneously
Utilize SMS service in gsm system, when breaking down, motor notify the ZIF connector J1 by 40 pins to technician or relevant leader's TC35i modular circuit outside to control TC35i module by the SMS very first time, 1～5 pin of J1 is battery power supply BATT+, meet VCC-5V, described VCC-5V is 5V power supply, send the required 2A electric current of note, so chip U15 provides the power supply VCC-5V of 2A electric current for TC35i module, 6～10 pin of J1 are the power supply ground of digital circuit working power, that the SIM card seat of TC35i module adopts is 8 pin Molex seat J2, 28 pin of J1, 29 pin respectively with 1 of J2, 4 pin join, for SIM card, J2 provides working power, whether 24 pin of J1 and 8 pin of J2 join installs for detection of SIM card, 25 pin of J1 and 2 pin of J2 join for system reset, 26 pin of J1,27 pin join for the transmission of SIM card and TC35i intermodular data with 6 pin, 3 pin of J2 respectively, and the signal of the 73 pin outputs of single-chip microcomputer MSP430F449 is exported to 15 pin of J1 after triode Q3 drives, 74 pin of single-chip microcomputer MSP430F449,75 pin join for the transmission of single-chip microcomputer and TC35i intermodular data with 18 pin, 19 pin of J1 respectively, and 32 toes of J1 show the duty of TC35i, when D31 extinguishes, show that TC35i is in closing or sleep state, when D31 be 600ms bright, while putting out alternately, show that SIM card is not inserted or TC35i is carrying out network entry, when D31 be 75ms bright-3s is while putting out cycle alternation, shows TC35i login, in holding state.
8. a kind of safety monitoring terminal device for mine motor according to claim 1, is characterized in that, the specific works process of human-computer interaction module (5) is:
The circuit of human-computer interaction module (5) is comprised of keyboard and LCD interface, wherein keyboard is 4 * 4 matrix keyboards, 4 lines of this matrix keyboard S1～S16 respectively with single chip processing module (1) in 22 pin～25 pin of single-chip microcomputer MSP430F449 join, 4 alignments of this matrix keyboard join with 26 pin～29 pin of single-chip microcomputer MSP430F449 respectively, U16 is LCD interface, 1 pin of U16 connects power supply ground, 2 pin connect power supply, 4 pin～6 pin respectively with single-chip microcomputer MSP430F449 for showing 50 pin of control, 49 pin and 48 pin join, 7 pin～14 pin join as demonstration data output end 30 pin～37 pin of Concurrent Display data and single-chip microcomputer MSP430F449, 15 pin connect power supply and represent to adopt parallel convey.
9. a kind of safety monitoring terminal device for mine motor according to claim 1, is characterized in that I
2it is clock module that C interface peripheral module (6) adopts U18, and what adopted low-power consumption has a work I
2cMOS real-time clock/the calendar chip of C interface, is used for providing correct time to system, and 5 pin of U18,6 pin join with 66 pin and 67 pin of single-chip microcomputer MSP430F449 respectively, and what U19 memory module adopted is also to have I
2the chip of C interface, its 5 pin, 6 pin join with 64 pin and 65 pin of single-chip microcomputer MSP430F449 respectively, complete the transmission of data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110098221.3A CN102251808B (en) | 2011-04-19 | 2011-04-19 | Safety monitoring terminal device for mine motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110098221.3A CN102251808B (en) | 2011-04-19 | 2011-04-19 | Safety monitoring terminal device for mine motor |
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| CN102251808B true CN102251808B (en) | 2014-02-26 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102568180B (en) * | 2011-12-31 | 2013-08-14 | 成都国腾实业集团有限公司 | Oil engine efficiency tracking monitoring system and method |
| CN103513180A (en) * | 2013-06-24 | 2014-01-15 | 大连民族学院 | Motor operation state monitoring and fault detecting system |
| CN103532099A (en) * | 2013-10-17 | 2014-01-22 | 合肥国润智能电气技术有限公司 | Intelligent control system of security motor in inflammable and explosive environment |
| CN104536310A (en) * | 2014-11-27 | 2015-04-22 | 哈尔滨金都太阳能科技有限公司 | Rotating speed controller of driving motor of submersible propeller |
| CN104579021A (en) * | 2014-11-28 | 2015-04-29 | 三一重型装备有限公司 | Mining multi-loop electromagnetic starter and mining mechanical control equipment |
| CN104500144B (en) * | 2014-12-29 | 2017-01-25 | 山东华硕能源科技有限公司 | Mining multifunctional safety production online detection monitoring substation and working method thereof |
| CN106301088A (en) * | 2016-08-27 | 2017-01-04 | 内蒙古包钢钢联股份有限公司 | A kind of magnetic starter with network savvy |
| CN106856631A (en) * | 2017-02-28 | 2017-06-16 | 无锡龙翼智能科技有限公司 | A kind of multimode communication method and system based on intelligent terminal |
| CN108799078B (en) * | 2018-05-30 | 2019-11-22 | 扬州大学 | A kind of construction site violation operation warning device and its application method |
| CN113759775A (en) * | 2021-11-09 | 2021-12-07 | 北京锐智华通科技有限公司 | Intelligent safety control device for lifting and walking of crane |
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| CN2786671Y (en) * | 2005-01-10 | 2006-06-07 | 北京工业大学 | Distributing type diving electric engine monitoring system based on CAN bus |
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