CN205263229U - Communication power monitoring devices - Google Patents
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Abstract
The utility model discloses a communication power monitoring devices, the device includes: the analog sampling treater, an analog to digital converter, the MCU processing system, the key entry unit, the clock signal unit, the alarm, communication interface, memory cell, the host computer, wherein, advance hall sampling technique has been adopted, and be provided with the simulation comparison circuit, do the front -end processing with the signal, and the magnitude of voltage of the corresponding variation in load of output, this magnitude of voltage is changed through AD again, it is further analysis processes to send data signal to microcomputer again, and realize that failure analysis relatively, judge, the measurement, show, functions such as storage and signal remote transmission, and realize that distant place centralized control center can in time obtain the abnormal information, it handles to make safe the maintenance, communication power monitoring devices reasonable in design has been realized, can effectively monitor communication power supply circuit, when fault happens, can high efficiency report to the police, effectively improve the technological effect of electric power communication system's safety and stability nature.
Description
Technical field
The utility model relates to communication apparatus research field, relates in particular to a kind of communication power supply monitoring device.
Background technology
In power plant, transformer station, there are a large amount of traffic order, service data etc. to need mutual transmission, complete so mutual transmission, be unable to do without 48V communication power supply, no matter this communication power supply is the linear power supply that adopts civil power step-down, rectification, filtering, voltage stabilizing to convert, or through the converted Switching Power Supply of the higher-order of oscillation, the height of all making a difference, the feature that cost is high, simultaneously because loading heavily, branched line is many, and the phenomenon of the failure that is subject to impacting short circuit and moist ground connection happens occasionally.
In the prior art, when being out of order, be mainly by manually operating a switch, the mode of power-off is carried out trouble-shooting circuit one by one, and so both very complicateds cause again regular link to be subject to involving impact, are very improper.
In sum, the utility model utility model people realizing in the process of utility model technical scheme in the utility model embodiment, finds that above-mentioned technology at least exists following technical problem:
In the prior art, existing communication power supply fault detection method exists, and detection efficiency is lower, easily causes regular link to be subject to involving the technical problem of impact.
Utility model content
The utility model provides a kind of communication power supply monitoring device, having solved existing communication power supply fault detection method exists, detection efficiency is lower, easily cause regular link to be subject to involving the technical problem of impact, realize communication power supply monitoring device reasonable in design, can effectively monitor communication power supply circuit, in the time breaking down, can rapidly and efficiently report to the police, effectively improve the technique effect of the security and stability of power communication system.
For solving the problems of the technologies described above, the utility model embodiment provides a kind of communication power supply monitoring device, and described device comprises:
Analog sampling processor, A/D converter, scm managing system, keyboard input block, clock signal unit, alarm, communication interface, memory cell, host computer, wherein, described analog sampling processor is used for the test line of communication power supply to monitor, and obtains analog voltage signal; Described A/D converter is for being converted to data signal by the analog voltage signal of acquisition; Described clock signal unit is for generation of clock signal; Described keyboard input block is for input control order; Described scm managing system is for when the dual signal of analog sampling processor and keyboard input block is after A/D changes, carry out computational analysis and process judgement, it judges result, alarm equipment alarm is sent on one tunnel, another road sends host computer to signal and processes, and passes the signal along on grid and checks for the supervisor of centralized control center through communication interface.
Wherein, described analog sampling processor specifically comprises: alterating and direct current source module, sensor assembly, comparison judge module, analog output module, wherein, described alterating and direct current source module is for being that dc source is for described analog sampling processor by AC power rectification; Described sensor assembly is used for gathering the current changing signal of communication power supply test line, and the signal collecting is passed to comparison judge module; Described relatively judge module compares according to the signal collecting, if meet comparison rule, output voltage signal is to described analog output module, and described analog output module generates analog voltage signal according to the signal that relatively judge module transmission comes.
Wherein, described alterating and direct current source module is specially: by 220V AC power, from 1., 2. terminal is introduced, through K switch 1, insurance BX sends transformer B1 step-down to, and B1 secondary centre tap, as publicly; Diode D1-D4 completes positive and negative power rectifier; D1, the parallel connection of D3 output, connect three and rectify input 1 pin of voltage-stablizer WY1, and 3 pin of WY1 connect publicly, the 2 pin output positive supplies of WY1; D2, the parallel connection of D4 input, connect input 3 pin of the negative voltage-stablizer WY2 of three ends, and 1 pin of WY2 connects publicly, the 2 pin output negative supplies of WY2; Capacitor C 1, C2, C3, C4 do respectively the filtering of three terminal regulator input, output; Light emitting diode Fg1 and resistance R 1 are connected, and do working power instruction.
Wherein, described sensor assembly specifically comprises: Hall current sampler HR, load L, artifical resistance Rd1, artifical resistance Rd2, wherein, described Hall current sampler comprises: base disk, on described base disk, be placed with sensor, on described sensor and described base disk, be equipped with fixing hole, described sensor middle part is provided with instrument connection, tested AC line is monitored through described instrument connection, described covers disposed on sensor has anode connection terminal a, negative pole link b, sampled signal output c, earth terminal d; Wherein, the anode connection terminal a of described Hall current sampler HR is connected with the positive pole of described alterating and direct current source module, after being connected with load L, the negative pole link b of described Hall current sampler HR is connected with the negative pole of described alterating and direct current source module, in parallel with described load L after artifical resistance Rd1 and artifical resistance Rd2 series connection, described sampled signal output c is connected with described relatively judge module.
Wherein, described relatively judge module is specially: resistance R 2 and Zener diode WY3 series connection, form reference voltage, and be access to inverting input 2 pin; Resistance R 3, R4 series connection, forms operating point, and is access to in-phase input end 3 pin, and at homophase, end of oppisite phase and form relatively judge module in conjunction with integrated operational amplifier circuit, the described relatively output of judge module is connected with potentiometer W1.
Wherein, one end of the potentiometer W1 of described analog output module is connected with the output of described relatively judge module, through the adjusting of potentiometer, and at the corresponding load variations output voltage signal in moving contact OUT place, the other end of the potentiometer ground connection afterwards of connecting with resistance R 5.
The one or more technical schemes that provide in the utility model embodiment, at least have following technique effect or advantage:
Owing to having adopted, communication power supply monitoring device is designed to comprise: analog sampling processor, A/D converter, scm managing system, keyboard input block, clock signal unit, alarm, communication interface, memory cell, host computer, wherein, described analog sampling processor is used for the test line of communication power supply to monitor, and obtains analog voltage signal, described A/D converter is for being converted to data signal by the analog voltage signal of acquisition, described clock signal unit is for generation of clock signal, described keyboard input block is for input control order, described scm managing system is for when the dual signal of analog sampling processor and keyboard input block is after A/D changes, carry out computational analysis and process judgement, it judges result, and alarm equipment alarm is sent on a road, and another road sends host computer to signal and processes, pass the signal along to the technical scheme of checking for the supervisor of centralized control center on grid through communication interface, that is, first analyze, when normal, relevant instrumentation table meter is devoted oneself to work, and load current is relatively stable, in the time breaking down, no matter be ground connection or short circuit, capital changes electric current, and most for increasing, therefore emphasis is that load current is monitored, when normal, device maintains the original state, when abnormal, device judges after testing and can send sound and light signal, provide warning message to operations staff, in order to timely analyzing and processing, the generation of minimizing accident and expansion, advanced Hall Sampling techniques are adopted, and be provided with analog comparator, signal is done to front-end processing, and export the magnitude of voltage of corresponding load variations, this magnitude of voltage is changed through A/D again, again data signal is sent to micro computer and be further analyzed processing, and realize accident analysis comparison, judgement, metering, show, the functions such as storage and the signal is far passed, and realize distant place centralized control center and can obtain in time abnormal information, make security maintenance processing, increase substantially intelligent management level, so, efficiently solving existing communication power supply fault detection method exists, detection efficiency is lower, easily cause regular link to be subject to involving the technical problem of impact, and then it is reasonable in design to have realized communication power supply monitoring device, can effectively monitor communication power supply circuit, in the time breaking down, can rapidly and efficiently report to the police, effectively improve the technique effect of the security and stability of power communication system.
Brief description of the drawings
Fig. 1 is the structural representation of communication power supply monitoring device in the utility model embodiment;
Fig. 2 is the structural representation of Hall current sampler in the utility model embodiment;
Fig. 3 is current sample analog circuit schematic diagram in the utility model embodiment;
Fig. 4 is communication power supply load current observation circuit schematic diagram in the utility model embodiment;
Fig. 5 is communication power supply monitoring device monitoring, alarming schematic flow sheet in the utility model embodiment;
Wherein, the monitored DC line of 1-, 2-Hall element, 3-instrument connection, 4-terminals, 5-base disk, 6-fixing hole.
Detailed description of the invention
The utility model provides a kind of communication power supply monitoring device, having solved existing communication power supply fault detection method exists, detection efficiency is lower, easily cause regular link to be subject to involving the technical problem of impact, realize communication power supply monitoring device reasonable in design, can effectively monitor communication power supply circuit, in the time breaking down, can rapidly and efficiently report to the police, effectively improve the technique effect of the security and stability of power communication system.
Technical scheme in the utility model enforcement is for solving the problems of the technologies described above. General thought is as follows:
Adopt communication power supply monitoring device is designed to comprise: analog sampling processor, A/D converter, scm managing system, keyboard input block, clock signal unit, alarm, communication interface, memory cell, host computer, wherein, described analog sampling processor is used for the test line of communication power supply to monitor, and obtains analog voltage signal, described A/D converter is for being converted to data signal by the analog voltage signal of acquisition, described clock signal unit is for generation of clock signal, described keyboard input block is for input control order, described scm managing system is for when the dual signal of analog sampling processor and keyboard input block is after A/D changes, carry out computational analysis and process judgement, it judges result, and alarm equipment alarm is sent on a road, and another road sends host computer to signal and processes, pass the signal along to the technical scheme of checking for the supervisor of centralized control center on grid through communication interface, that is, first analyze, when normal, relevant instrumentation table meter is devoted oneself to work, and load current is relatively stable, in the time breaking down, no matter be ground connection or short circuit, capital changes electric current, and most for increasing, therefore emphasis is that load current is monitored, when normal, device maintains the original state, when abnormal, device judges after testing and can send sound and light signal, provide warning message to operations staff, in order to timely analyzing and processing, the generation of minimizing accident and expansion, advanced Hall Sampling techniques are adopted, and be provided with analog comparator, signal is done to front-end processing, and export the magnitude of voltage of corresponding load variations, this magnitude of voltage is changed through A/D again, again data signal is sent to micro computer and be further analyzed processing, and realize accident analysis comparison, judgement, metering, show, the functions such as storage and the signal is far passed, and realize distant place centralized control center and can obtain in time abnormal information, make security maintenance processing, increase substantially intelligent management level, so, efficiently solving existing communication power supply fault detection method exists, detection efficiency is lower, easily cause regular link to be subject to involving the technical problem of impact, and then it is reasonable in design to have realized communication power supply monitoring device, can effectively monitor communication power supply circuit, in the time breaking down, can rapidly and efficiently report to the police, effectively improve the technique effect of the security and stability of power communication system.
In order better to understand technique scheme, below in conjunction with Figure of description and concrete embodiment, technique scheme is described in detail.
Embodiment:
In an embodiment, provide a kind of communication power supply monitoring device, please refer to Fig. 1-Fig. 5, described device comprises:
Analog sampling processor, A/D converter, scm managing system, keyboard input block, clock signal unit, alarm, communication interface, memory cell, host computer, wherein, described analog sampling processor is used for the test line of communication power supply to monitor, and obtains analog voltage signal; Described A/D converter is for being converted to data signal by the analog voltage signal of acquisition; Described clock signal unit is for generation of clock signal; Described keyboard input block is for input control order; Described scm managing system is for when the dual signal of analog sampling processor and keyboard input block is after A/D changes, carry out computational analysis and process judgement, it judges result, alarm equipment alarm is sent on one tunnel, another road sends host computer to signal and processes, and passes the signal along on grid and checks for the supervisor of centralized control center through communication interface.
Wherein, in the utility model embodiment, described analog sampling processor specifically comprises: alterating and direct current source module, sensor assembly, comparison judge module, analog output module, wherein, described alterating and direct current source module is for being that dc source is for described analog sampling processor by AC power rectification; Described sensor assembly is used for gathering the current changing signal of communication power supply test line, and the signal collecting is passed to comparison judge module; Described relatively judge module compares according to the signal collecting, if meet comparison rule, output voltage signal is to described analog output module, and described analog output module generates analog voltage signal according to the signal that relatively judge module transmission comes.
Wherein, in the utility model embodiment, described alterating and direct current source module is specially: by 220V AC power, from 1., 2. terminal is introduced, through K switch 1, insurance BX sends transformer B1 step-down to, and B1 secondary centre tap, as publicly; Diode D1-D4 completes positive and negative power rectifier; D1, the parallel connection of D3 output, connect three and rectify input 1 pin of voltage-stablizer WY1, and 3 pin of WY1 connect publicly, the 2 pin output positive supplies of WY1; D2, the parallel connection of D4 input, connect input 3 pin of the negative voltage-stablizer WY2 of three ends, and 1 pin of WY2 connects publicly, the 2 pin output negative supplies of WY2; Capacitor C 1, C2, C3, C4 do respectively the filtering of three terminal regulator input, output; Light emitting diode Fg1 and resistance R 1 are connected, and do working power instruction.
Wherein, in the utility model embodiment, described sensor assembly specifically comprises: Hall current sampler HR, load L, artifical resistance Rd1, artifical resistance Rd2, wherein, described Hall current sampler comprises: base disk, on described base disk, be placed with sensor, on described sensor and described base disk, be equipped with fixing hole, described sensor middle part is provided with instrument connection, tested AC line is monitored through described instrument connection, and described covers disposed on sensor has anode connection terminal a, negative pole link b, sampled signal output c, earth terminal d; Wherein, the anode connection terminal a of described Hall current sampler HR is connected with the positive pole of described alterating and direct current source module, after being connected with load L, the negative pole link b of described Hall current sampler HR is connected with the negative pole of described alterating and direct current source module, in parallel with described load L after artifical resistance Rd1 and artifical resistance Rd2 series connection, described sampled signal output c is connected with described relatively judge module.
Wherein, in the utility model embodiment, described relatively judge module is specially: resistance R 2 and Zener diode WY3 series connection, form reference voltage, and be access to inverting input 2 pin; Resistance R 3, R4 series connection, forms operating point, and is access to in-phase input end 3 pin, and at homophase, end of oppisite phase and form relatively judge module in conjunction with integrated operational amplifier circuit, the described relatively output of judge module is connected with described potentiometer W1.
Wherein, in the utility model embodiment, one end of the potentiometer of described analog output module is connected with the described relatively output of judge module, through the adjusting of potentiometer, at the corresponding load variations output voltage signal in moving contact OUT place, the other end of potentiometer connect with resistance R 5 after ground connection.
Wherein, in the utility model embodiment, while carrying out the development of automated watch-keeping facility, first analyze, when normal, relevant instrumentation table meter is devoted oneself to work, and load current is relatively stable; In the time breaking down, no matter be ground connection or short circuit, all can make electric current change, and most for increasing. For this reason, we catch such Variation Features to carry out the development of communication power supply monitoring alarm, emphasis is that load current is monitored, and when normal, device maintains the original state, when abnormal, device judges after testing and can send sound and light signal, provides warning message, in order to timely analyzing and processing to operations staff, the generation of minimizing accident and expansion, effectively improve the security and stability of power communication system.
Wherein, in the utility model embodiment, communication power supply is in the time of normal operation, as calculated and detect, no matter bus or each branch line, all can possess metastable current values, and when being short-circuited, when ground connection, electric current will change, be generally rising, for this reason, we can be by normal duty current value basis as a comparison, in the time extremely surmounting, carry out sound and light alarm.
Know the size of actual motion current value, will carry out data monitoring collection, but direct current is unlike alternating current, electromagnetic field is very weak, sample very difficult, for head it off, in prior art, take to carry the conversion testing method of 10Hz left and right low frequency signal to system, so also bad, since the one, increasing device investment, the 2nd, in electric power DC system, increase frequency interferences, so we have abandoned such scheme.
What we specifically implemented to adopt is hall sensing technology, has solved such problem, and in this technology, main Hall element is a kind of semiconductor devices, in the time that no current passes through, in stationary state; In the time having electric current to flow through, just can activate electric charge, send the corresponding voltage signal changing, we send this signal to main frame again, do value relatively and judgement control, in the time confirming as fault, to send row sound and light alarm signal, Hall element model used is CS1000EK2.
Wherein, Hall element structure and sample mode be as shown in Figures 2 and 3: in Fig. 2, monitored DC line 1(can be power bus, also branched line), center instrument connection 3 from anode M through Hall element 2, the other end of circuit is connected to load L, get back to negative terminal N, the 4th, terminals, wherein a for+15V, b for-15V, c are that sampled signal output, d are earth terminals, 5 is base disk, the 6th, fixing hole, can select according to field position, in this figure, needs only by survey line through instrument connection 3, connect working power, can enter monitored state.
Fig. 3 is sampled analog circuit diagram, and when normal, total current Iz is identical with load current If, be Iz=If, in Hall element HR, can be used as a conventional value output, in the time that fault occurs, as occurred grounding phenomenon in circuit, will produce earth current Id, total current Iz increases, Iz=If+Id, the electric quantity signal that at this moment Hall element collects increases, after conversion process, send corresponding larger voltage signal at the c of Fig. 3 terminal, in Fig. 3, Rd1, Rd2 are analogue ground resistance.
Wherein, in the utility model embodiment, please refer to Fig. 4, Fig. 4 is communication power supply load current prison circuit diagram, in Fig. 4, has following components, will be introduced respectively.
Alterating and direct current source module: power supply is working foundation, so first let us designs, before Fig. 4,220V AC power is from 1., 2. terminal is introduced, and through K switch 1, insurance BX sends transformer B1 step-down to, and B1 secondary centre tap, as publicly; Diode D1-D4 completes positive and negative power rectifier; D1, the parallel connection of D3 output, connect three and rectify input 1 pin of voltage-stablizer WY1, and 3 pin of WY1 connect publicly, 2 pin output positive supplies; D2, the parallel connection of D4 input, connect input 3 pin of the negative voltage-stablizer WY2 of three ends, and 1 pin of WY2 connects publicly, 2 pin output negative supplies, and wherein the model of WY1 is W7815, the model of WY2 is W7915; Capacitor C 1, C2, C3, C4 do respectively 50Hz and the medium-high frequency filtering of three terminal regulator input, output; Light emitting diode Fg1 and resistance R 1 are connected, and do working power instruction.
Sensor assembly: the left side at Fig. 4 can be seen, we have designed Hall element and connected mode thereof, its signal of telecommunication collecting is exported from wiring 4, correspondence sends the input socket CZ1 in Fig. 4 to again, as seen from the figure, and a termination+15V power supply of CZ1, b termination-15V power supply, c end, for the fault-signal after Collect conversion, is access to comparison amplifier, and d is for publicly.
After device connects, monitored AC line, through Hall element SMIS hole, is connected to positive-negative power, can start curent change collecting work.
Relatively judge module: in Fig. 4, form relatively judge module centered by IC1, wherein resistance R 2 and Zener diode WY3 series connection, form reference voltage, is access to inverting input 2 pin; Resistance R 3, R4 series connection, forms operating point, is access to in-phase input end 3 pin, thus, and at homophase, end of oppisite phase and form relatively determining device in conjunction with integrated transporting discharging IC1.
Under normal condition, load current changes little, and the conventional input voltage of Hall element is lower, in U2 ﹥ U3 state, integrated transporting discharging IC1 by; If but there is the phenomenon of the failure such as ground connection, load impact, and DC current Iz rises, and after Hall element sample conversion, sends the corresponding high voltage changing here from c pin, will be converted to U2 ﹤ U3, and now integrated transporting discharging IC1 upset, at 6 pin output high level.
That IC1 integrated transporting discharging block signal is selected is F007, its can adapt to ± 15V work.
Analog output module: when after integrated transporting discharging IC1 upset; send high level at 6 pin; this high level is access to one end of potentiometer W1; through the adjusting of W1; at moving contact OUT place, corresponding load variations output 0-3.6V voltage signal, carries out value for intelligence computation and prepares, the other end of the W1 ground connection afterwards of connecting with resistance R 5; R5 is protective resistance, can prevent that potentiometer moving contact from causing output signal shorted to earth while being adjusted to termination, bottom.
Because present unattended substation increases, need to consider by monitor signal teletransmission the problem to centralized control center, for this reason, we have introduced intelligent monitoring device, have enabled required function.
As shown in Figure 1, device is made up of external sampling and inside chip two parts the structural representation of monitoring device.
External analog sampled signal: Fig. 1 upper left quarter is that the monitored circuit of communication power supply passes Hall element, after circuit in Fig. 4 is relatively processed, the analog voltage signal of sending here from OUT.
Chip structure: in Fig. 1, the signal leading gathering through Hall element, to single-chip microprocessor system, carries out serial intelligent processing method:
1) A/D conversion: what send here from Hall sampling and processing of circuit thereof is analog voltage signal, and microcomputer chip response is data signal, so, do A/D conversion, send CPU central signal processor to by data/address bus and address bus again, carry out the work such as judgement of making comparisons with keyboard signalization, A/D conversion model used is MAX125.
2) clock signal: device inside is provided with quartz oscillator, frequency divider, counter etc., to produce year, month, day, hour, min, second isochronon signal, both can walk time, again can record trouble time of origin, be convenient to crash analysis processing, the model of crystal clock used is DS12887.
3) keyboard setting: on the right side of Fig. 1, be provided with keyboard and IOP(I/OProcessor) integrated receiving processor, human-computer dialogue be can carry out, monitored ground path, sensor number, electric current fiducial value, warning startup value, time adjustment, communication protocol etc. inputted; Can do monitored ground connection wire size, earth current value, fault time etc. in conjunction with LCD LCDs again and retrieve for examination and inquire about, the model of receiving processor used is JCDL8279.
4) scm managing system: according to information processing needs, we have selected powerful MCS-96 type single chip microcomputer to carry out the work.
When dual signal that analog sampling and keyboard arrange is after A/D conversion, by address bus and data/address bus, send into CPU single chip microcomputer, carry out computational analysis and process judgement, it judges result, the display alarm of the machine LCD liquid crystal display is sent on one tunnel, another road sends host computer to signal again, make more wide region, the classification of larger function, layout, tabulation, the processing such as storage, also by on-the-spot communication protocol and the baud rate etc. adapting to, through RS232, 485 interfaces pass the signal along on grid, make the supervisor of centralized control center and relevant leader also can understand and grasp in the distance communication dc source working condition, particularly under abnormality, making in time crash analysis processes with investigation, to ensure direct current communication power supply energy safety, stable operation.
Wherein, in the utility model embodiment, also carry out CPU Software for Design, according to the needs of communication dc source load current monitoring, on the basis of hardware configuration, we have designed related software flow process, as shown in Figure 5, are specially: initialize, work starts, and first monitoring system is done to the initialization process such as zero clearing and reset; Series of signals and data are inputted in human-computer dialogue from keyboard, and they are:
1), monitored circuit sequence number, can be power bus or branch line;
2), sweep time t, for avoiding temporary impact and subduction signal operation time etc., to confirm authenticity and the continuity of fault, this device arranges sweep interval t, is taken as 10 seconds.
3), conventional load electric current I f, can be set to basic fiducial value;
Relatively judgement: when parameter setting completes, data conversion treatment is just carried out in inside, forms the binary code of monolithic function identification; Opposite side, the data signal of being sampled and being changed through A/D by DC load current monitoring, gives the relatively differentiation (footnote letter z, f represent respectively " total value " and " load value ") that CPU surveys total current Iz and conventional load electric current I f in the lump.
When normal, substantially always,, in the inquiry of " Iz > If ", obtaining negates answer for total current Iz and load current If, so signal is from the output of comparator N end, continues " scan round ".
There is faults such as ground connection etc. during when monitored circuit, will produce earth current Id, total current increases thus, that is: Iz=If+Id, so, send collected signal to CPU and compare judgement, in the inquiry of " Iz > If ", what obtain is sure answer, and signal changes the Y end output from comparator.
Liquid crystal display metering shows: liquid crystal display shows point normal and abnormal two kinds of situations, when normal, focuses on display conventional load electric current I f value and current time; When abnormal, 0-255 numeral point in corresponding the 0-3.6V magnitude of voltage of potentiometer W1 regulation output in Fig. 3 intelligent chip to be calculated and quantification treatment, and add the data of original If, common demonstration, the failure condition of Fang Tixian Iz=If+Id, except current data, also to show fault time, line number and sound and light alarm signal etc.; These information are stored again simultaneously, in order to retrieving for examination inquiry, do accident analyzing and processing.
Separately, in analog circuit, conventional load electric current is converted into Zener diode WY3 and does reference voltage, and compare through the voltage data of Hall sample conversion; And in micro computer, be provided with load current If value through keyboard again, and carry out the inquiry comparison of " Iz > If ", like this, seem repetition, but act on different, the existing relatively judgement of the latter, is also to start the magnitude calculation of " If+Id ", and data is shown on liquid crystal display, also can start the warning device that an intelligence system distant place arranges, therefore embodied Duplex treatment feature more accurately and reliably simultaneously.
Information transmission: fault-signal is in liquid crystal display display alarm, send again host computer to, do the processing such as the integration classification of wide region more, through RS232 or 485 interfaces etc., adopt on-the-spot suitable communications protocol again, send grid to, make the personnel of centralized control center and relevant leader also can recognize in the distance DC system fault situation, safeguard processing to make in time, thereby avoid the expansion that spreads of accident, increase substantially thus security of system coefficient.
Intelligent communication power-charged current monitoring alarm in the utility model has adopted advanced Hall Sampling techniques, and be provided with analog comparator, signal is done to front-end processing, and export the magnitude of voltage of corresponding load variations, this magnitude of voltage is changed through A/D again, again data signal is sent to micro computer and be further analyzed processing, and realize accident analysis comparison, judgement, metering, show, the functions such as storage and the signal is far passed, and realize distant place centralized control center and can obtain in time abnormal information, make security maintenance processing, increase substantially intelligent management level, this device is more conducive to expand to the use of unattended substation.
Technical scheme in above-mentioned the utility model embodiment, at least has following technique effect or advantage:
Owing to having adopted, communication power supply monitoring device is designed to comprise: analog sampling processor, A/D converter, scm managing system, keyboard input block, clock signal unit, alarm, communication interface, memory cell, host computer, wherein, described analog sampling processor is used for the test line of communication power supply to monitor, and obtains analog voltage signal, described A/D converter is for being converted to data signal by the analog voltage signal of acquisition, described clock signal unit is for generation of clock signal, described keyboard input block is for input control order, described scm managing system is for when the dual signal of analog sampling processor and keyboard input block is after A/D changes, carry out computational analysis and process judgement, it judges result, and alarm equipment alarm is sent on a road, and another road sends host computer to signal and processes, pass the signal along to the technical scheme of checking for the supervisor of centralized control center on grid through communication interface, that is, first analyze, when normal, relevant instrumentation table meter is devoted oneself to work, and load current is relatively stable, in the time breaking down, no matter be ground connection or short circuit, capital changes electric current, and most for increasing, therefore emphasis is that load current is monitored, when normal, device maintains the original state, when abnormal, device judges after testing and can send sound and light signal, provide warning message to operations staff, in order to timely analyzing and processing, the generation of minimizing accident and expansion, advanced Hall Sampling techniques are adopted, and be provided with analog comparator, signal is done to front-end processing, and export the magnitude of voltage of corresponding load variations, this magnitude of voltage is changed through A/D again, again data signal is sent to micro computer and be further analyzed processing, and realize accident analysis comparison, judgement, metering, show, the functions such as storage and the signal is far passed, and realize distant place centralized control center and can obtain in time abnormal information, make security maintenance processing, increase substantially intelligent management level, so, efficiently solving existing communication power supply fault detection method exists, detection efficiency is lower, easily cause regular link to be subject to involving the technical problem of impact, and then it is reasonable in design to have realized communication power supply monitoring device, can effectively monitor communication power supply circuit, in the time breaking down, can rapidly and efficiently report to the police, effectively improve the technique effect of the security and stability of power communication system.
Although described preferred embodiment of the present utility model, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment. So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model. Like this, if these amendments of the present utility model and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (6)
1. a communication power supply monitoring device, is characterized in that, described device comprises:
Analog sampling processor, A/D converter, scm managing system, keyboard input block, clock signal unit, alarm, communication interface, memory cell, host computer, wherein, described analog sampling processor is used for the test line of communication power supply to monitor, and obtains analog voltage signal; Described A/D converter is for being converted to data signal by the analog voltage signal of acquisition; Described clock signal unit is for generation of clock signal; Described keyboard input block is for input control order; Described scm managing system is for when the dual signal of analog sampling processor and keyboard input block is after A/D changes, carry out computational analysis and process judgement, it judges result, alarm equipment alarm is sent on one tunnel, another road sends host computer to signal and processes, and passes the signal along on grid and checks for the supervisor of centralized control center through communication interface.
2. device according to claim 1, it is characterized in that, described analog sampling processor specifically comprises: alterating and direct current source module, sensor assembly, comparison judge module, analog output module, wherein, described alterating and direct current source module is for being that dc source is for described analog sampling processor by AC power rectification; Described sensor assembly is used for gathering the current changing signal of communication power supply test line, and the signal collecting is passed to comparison judge module; Described relatively judge module compares according to the signal collecting, if meet comparison rule, output voltage signal is to described analog output module, and described analog output module generates analog voltage signal according to the signal that relatively judge module transmission comes.
3. device according to claim 2, is characterized in that, described alterating and direct current source module is specially: by 220V AC power, from 1., 2. terminal is introduced, through K switch 1, insurance BX sends transformer B1 step-down to, and B1 secondary centre tap, as publicly; Diode D1-D4 completes positive and negative power rectifier; D1, the parallel connection of D3 output, connect three and rectify input 1 pin of voltage-stablizer WY1, and 3 pin of WY1 connect publicly, the 2 pin output positive supplies of WY1; D2, the parallel connection of D4 input, connect input 3 pin of the negative voltage-stablizer WY2 of three ends, and 1 pin of WY2 connects publicly, the 2 pin output negative supplies of WY2; Capacitor C 1, C2, C3, C4 do respectively the filtering of three terminal regulator input, output; Light emitting diode Fg1 and resistance R 1 are connected, and do working power instruction.
4. device according to claim 3, it is characterized in that, described sensor assembly specifically comprises: Hall current sampler HR, load L, artifical resistance Rd1, artifical resistance Rd2, wherein, described Hall current sampler comprises: base disk, on described base disk, be placed with sensor, on described sensor and described base disk, be equipped with fixing hole, described sensor middle part is provided with instrument connection, tested AC line is monitored through described instrument connection, and described covers disposed on sensor has anode connection terminal a, negative pole link b, sampled signal output c, earth terminal d; Wherein, the anode connection terminal a of described Hall current sampler HR is connected with the positive pole of described alterating and direct current source module, after being connected with load L, the negative pole link b of described Hall current sampler HR is connected with the negative pole of described alterating and direct current source module, in parallel with described load L after artifical resistance Rd1 and artifical resistance Rd2 series connection, described sampled signal output c is connected with described relatively judge module.
5. device according to claim 4, is characterized in that, described relatively judge module is specially: resistance R 2 and Zener diode WY3 series connection, form reference voltage, and be access to inverting input 2 pin; Resistance R 3, R4 series connection, forms operating point, and is access to in-phase input end 3 pin, and at homophase, end of oppisite phase and form relatively judge module in conjunction with integrated operational amplifier circuit, the described relatively output of judge module is connected with potentiometer W1.
6. device according to claim 5, it is characterized in that, one end of the potentiometer W1 of described analog output module is connected with the described relatively output of judge module, through the adjusting of potentiometer, at the corresponding load variations output voltage signal in moving contact OUT place, the other end of potentiometer connect with resistance R 5 after ground connection.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372550A (en) * | 2015-12-10 | 2016-03-02 | 国网四川省电力公司电力科学研究院 | Intelligent communication power source monitoring device |
| CN109946507A (en) * | 2019-02-22 | 2019-06-28 | 苏州埃缇益自动化科技有限公司 | A kind of supply voltage real-time monitoring system of semiconductor test machine |
| CN114224268A (en) * | 2022-02-24 | 2022-03-25 | 极限人工智能有限公司 | Image processing device and endoscopic video system |
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2015
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372550A (en) * | 2015-12-10 | 2016-03-02 | 国网四川省电力公司电力科学研究院 | Intelligent communication power source monitoring device |
| CN109946507A (en) * | 2019-02-22 | 2019-06-28 | 苏州埃缇益自动化科技有限公司 | A kind of supply voltage real-time monitoring system of semiconductor test machine |
| CN114224268A (en) * | 2022-02-24 | 2022-03-25 | 极限人工智能有限公司 | Image processing device and endoscopic video system |
| CN114224268B (en) * | 2022-02-24 | 2022-05-03 | 极限人工智能有限公司 | Image processing device and endoscopic video system |
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