CN88102334A - A kind of integral electrical consuming monitor - Google Patents

Abstract

The present invention relates to a kind of electric load central control device, be specially adapted to control the user.The various telecontrol informations of electrical consuming monitor remote monitoring system are all used the frequency value representation (coding) of single audio signal, the telemechanical apparatus receiving unit contains frequency/numeral or frequency/voltage converter, it sends part and contains numeral/frequency or voltage/frequency converter, and the remote monitoring system of Gou Chenging is strong to the anti-phone interference performance of multiplexing local telephone network telecontrol channel thus.

Has four remote control function, particularly power definite value remote regulating, user's telemechanical apparatus that the remote measurement fineness is high.

Description

The present invention relates to a kind of electric load central control device, be specially adapted to control to the family.

It is trend of the times that the electric load control mode is developed to the centralized control direction of utilizing remote monitoring system by the locality control that utilizes electrical consuming monitor.But set up this remote monitoring system and face how to select this exceptional hardship of suitable telecontrol channel.

Using telephone network, particularly multiplexing local telephone network has tangible technology, superiority in economy as electrical consuming monitor remote monitoring system telecontrol channel.But because the central controlled characteristics of electric load, subscriber terminal equipment telemechanical apparatus part does not allow manually to insert local line by the user after getting through temporarily, and disposablely when can only equipment installing seals up access; Simultaneously, for preparing to receive guidance command at any time, user's telemechanical apparatus is collected mail part must be often open.Like this, the user takes on the telephone at ordinary times and certainly will become strong random disturbances in a kind of regular band and require to take special counter measure.

The objective of the invention is to provides a kind of easy telecontrol information coding-interpretation method and device for electrical consuming monitor and remote monitoring system thereof, it can be to obtain to improve remote moving function than simple circuit structure, particularly can satisfy the requirement that the remote regulating of power definite value, remote measurement fineness aspect increase stepping, can obtain enough antijamming capabilities again.

For this reason, for order, data and state information, the present invention imagines the unified frequency numeral of single audio signal that adopts and is represented (coding).The major advantage of this telecontrol information coding method is as follows:

(1) unification of sort signal form makes in the telemechanical apparatus relevant circuit be able to public and helps simplifying its circuit structure.

(2) to The data signal frequency numerals such as load, definite values, more easily accomplish meticulous.

(3) for guidance command and batcher operating state, use the signal frequency numeral, can not obtain big code distance for a long time in order to anti-interference in order or state number.

(4) simple signal that continues the long duration can be considered a kind of signal and repeats to send, and helps among the design anti-voice signal and other with random disturbances frequently especially.

The present invention's design is achieved in that

(1) guidance command generally comprises and calls measured value 1 together, calls measured value 2 together, calls survey together and load, call together letter batcher state, remote regulating definite value 1, remote regulating definite value 2, remote control in real time and remove 8 orders such as tripping operation self-insurance and remote control tripping operation, can be respectively with voice frequency F _C1～F _C8Expression.Various data, states such as remote measurement, remote regulating, remote signalling can adopt with a kind of monotony frequency F _iExpression is in conjunction with corresponding guidance command F _CjTimesharing sends and receives.

(2) Surveillance center is transformed to single audio signal F by numeral/frequency changer in the control and monitor console with guidance command or remote regulating value data _cOr F _i, and through its transmitting branch, using telephone network telecontrol channel and transfer to user side.The selected audio signal F that receives of user's telemechanical apparatus receiving branch circuit _cOr F _i, generally still needing is transformed to digital D by frequency/digitalizer _cOr D _i, so that command decoder one error detection or value data storage; At electrical consuming monitor partly is to do with three phase watt-hour meter under the measuring component situation, and the audio frequency set value signal is still needed in case of necessity and is transformed to fixed value voltage U through the frequency/voltage converter ₁Or U ₂, so that with the real-time voltage U of three phase watt-hour meter output ₃(representative is load in real time) directly compares.

(3) user's telemechanical apparatus mails to the data or the state of Surveillance center according to the guidance command received, is transformed to single audio signal F through numeral/frequency changer earlier _i, transfer to control and monitor console through transmitting branch and using telephone network telecontrol channel again.The selected audio signal F that receives of control and monitor console telemechanical apparatus receiving branch circuit _i, be transformed to digital D through frequency/digitalizer _iAnd show automatically.

(4) under remote measurement, the less demanding situation of remote regulating fineness, the mutual conversion of an above-mentioned digital frequency all has many ready-made ball bearing made using can constitute quite simple, economic, reliable telemechanical apparatus thus for utilizing.

(5) under remote measurement, remote regulating fineness are had relatively high expectations situation, must manage to improve signal frequency stability and counting accuracy thereof.For improving the signal frequency stability and simplifying production process, numeral/frequency changer is suitable for employing numerical control audio frequency synthesizer as shown in Figure 2, and it is that giving of N put two links such as frequency divider that modulus frequency divider and divide ratio be respectively K and M and formed by crystal oscillator, phase-locked loop, divide ratio.Be not difficult to find out, establish cps and all use He Zhi, then be worth F when numerical value M equals frequency ₀The time, be worth F frequently _iEqual numerical value of N, and corresponding to digital D _iOr D _c(control digital D _iOr D _cVariable part for divide ratio N).

(6) be to signal frequency F _cOr F _iCarry out accurate counting, the spy is additional accurate counting gating control gate as shown in Figure 3 in frequency counting circuit, forms (also can form equivalent electric circuit by other device) by NAND gate and inverter.Be not difficult to find out that this circuit can be by gating control signal EN(signal second) and clock signal clk (F _cOr F _i) both, conversion obtains and the synchronous counting pulse signal C of CLK.No matter EN and CLK synchronously whether, this circuit all can keep the count pulse width identical with CLK, the count pulse number is stable.

(7) for guaranteeing the stability of voltage/frequency conversion, can be digital (being common A/D conversion) with voltage transformation earlier, control audio frequency synthesizer shown in Figure 2 by this number again.

(8), should be mainly in telemechanical apparatus collection of letters branch road finish tracking filter, selective reception to audio signal with phase-locked loop for the purification audio signal.

Below in conjunction with one with the supporting embodiment of electrical consuming monitor that makes measuring component with three phase watt-hour meter, the invention will be further described (ginseng accompanying drawing 1).

This user's telemechanical apparatus partly is made up of audio frequency transceiver circuit, time-delay sampling gating circuit, audio frequency synthesizer, up counter, decoding-error detection and register circuit, D/A converter and definite value storage and converter etc. basically.Contain phase-locked loop in the audio frequency receiving branch circuit; Contain accurate counting gating control gate in the time-delay sampling gating circuit.

The remote motion signal F of the lasting several seconds of sending by control and monitor console _cOr F _i, through telephone line, filter joint, transceiver toggle switch K ₁, audio frequency receiving branch circuit and time-delay sampling gating circuit, become and continue one second count pulse, its repetition rate is F _cOr F _iThis count pulse is through diverter switch K ₂And deliver to up counter, with frequency F _c/ F _iThe remote motion signal of form is transformed to corresponding digital D _c/ D _iForm.

The digital D of order that counter is received _c, through decoding-error detection and register circuit, be transformed to the guidance command signal of space level (corresponding lead-out terminal goes out high level) form, so that control relevant diverter switch (K respectively ₁～K ₃, tripping operation self-holding switch etc.), that finishes corresponding individual event operation replys (to calling surveys together, calling letter etc. together) or preparation (to remote regulating).

To remote regulating, the digital D that counter is then received _i, send into corresponding definite value memory mapper by guidance command on the one hand, make it to export a new fixed value voltage (U ₁Or U ₂), and remain to till the next remote regulating always; Can preset several 1/N counters as presetting in several variable part control audio frequency synthesizers again on the other hand, make it to export one corresponding to this number D _iAudio signal F _i, and through audio frequency transmitting branch, transceiver toggle switch K ₁And filter joint, be sent to monitoring client as the remote regulating feedback information.

To calling survey together, when decoding-error detection and register circuit are received a certain survey (U that calls together ₁, U ₂Or U ₃) after the order, make K ₁～K ₃Switch is done corresponding switching, begin to accept to count after making the clear O of up counter simultaneously from the count pulse of " voltage-controlled clock pulse generator ", its number is transformed to this pulse generator of stepped-up voltage U～deliver to through the D/A converter, when U～be increased to and wait to call together survey voltage U _iWhen identical, generator stops to export count pulse.Like this, the poke sign indicating number D of up counter institute _i, just corresponding to waiting to call together the survey voltage U _iThereby, finished the A/D conversion.This is common " counter stepped-up voltage A/D converter ".Ditto described, this number D _iBe re-used as and preset several variable part control audio frequency synthesizers and the F of correspondence _iBe sent to monitoring client.

As for calling letter together, the signal combination that relevant alarm, tripping operation and definite value drop into can be regarded a multidigit binary number as, and directly sends into audio frequency synthesizer (among Fig. 1 draw in the end) and be transformed to corresponding F as presetting several variable parts _iBe sent to monitoring client.

Remove the tripping operation self-insurance as for remote control, its guidance command is directly sent in DHD-3C type and so on the electrical consuming monitor finishing corresponding actions, and beams back new remote signalling state automatically.

In addition to the implementation, still need and make following some supplementary notes:

(1) used simple and easy telecontrol channel need not be confined to using telephone network, as long as the simple and easy telecontrol channel that also can utilize simple and easy power line carrier, radio set and obtain is used telecontrol channel additional signal frequency drift (if with amplitude-modulation system, frequency modulation system etc.) not.

(2) audio frequency sending and receiving letter branch road not necessarily adopts time-devision system work, also can adopt frequency division system work.

(3) user's telemechanical apparatus sends fixed value voltage U ₁Or U ₂The time, not necessarily to as embodiment, pass through the A/D conversion, also can be with the digital D in the definite value register ₁Or D ₂Directly send into audio frequency synthesizer (diverter switch that will add by other certainly) as presetting several variable parts.

Claims (6)

1, a kind of network load centralized control that is used for, particularly control to the electrical consuming monitor and the remote monitoring system thereof at family, take using telephone network or use simple and easy power line carrier, measures such as radio set obtain simple and easy telecontrol channel, subscriber terminal equipment mainly partly is made up of electrical consuming monitor part and telemechanical apparatus, the remote monitoring platform mainly partly is made up of operation displayed record part and telemechanical apparatus, it is characterized in that telecontrol information is the frequency number value representation (coding) with single audio signal on passage, the telemechanical apparatus receiving unit contains the audio frequency receiving branch circuit, frequency/numeral or frequency/voltage converter, it sends part and contains numeral/frequency or voltage/frequency converter, the audio frequency transmitting branch.

2, electrical consuming monitor as claimed in claim 1 and remote monitoring system thereof, it is characterized in that numeral/frequency changer coefficient control audio frequency synthesizer, by crystal oscillator, phase-locked loop, divide ratio is that giving of N put two links such as frequency divider that modulus frequency divider and divide ratio be respectively K and M and formed, and can obtain the output frequency F that frequency numerical value (is unit with He Zhi) equals divide ratio N _j, and control digital D _iOr D _cVariable part for divide ratio N.

3, electrical consuming monitor as claimed in claim 1 and remote monitoring system thereof is characterized in that having in frequency/digitalizer an accurate counting gating control gate.

4, electrical consuming monitor as claimed in claim 1 and remote monitoring system thereof is characterized in that the voltage/frequency converter comprises voltage/digitalizer and two basic links of numerical control audio frequency synthesizer.

5, electrical consuming monitor as claimed in claim 1 and remote monitoring system thereof is characterized in that having in the audio frequency receiving branch circuit phase-locked loop to make the audio frequency tracking filter.

6, electrical consuming monitor as claimed in claim 1 and remote monitoring system thereof, it is characterized in that user's telemechanical apparatus inserts telephone subscriber line by filter joint, audio frequency sending and receiving letter branch road adopts time-devision system or frequency division system work, and up counter is by the guidance command F of time-delay sampling gating circuit to receiving _cOr remote regulating definite value F _iCarry out accurate counting to realize frequency/digital conversion, with the guidance command of characteristic frequency numeral through decoding-error detection and register circuit and start corresponding reception or transtation mission circuit, for example:, start the definite value receiving circuit, when receiving remote regulating definite value F to the order of remote regulating definite value _iAfter, the definite value numeral is sent into the definite value register by up counter, obtains fixed value voltage U through the D/A converter more in case of necessity ₁Or U ₂(partly is to make measuring component with three-phase power meter for electrical consuming monitor); To calling measured value order, then K together ₂, K ₃Switch is done corresponding switching and (time-devision system is still contained K ₁Switch and switching thereof), make the count pulse that begins after the up counter zero clearing to receive from " voltage-controlled clock pulse generator " simultaneously, until its number through the D/A conversion and voltage U～equal to wait to call together measured value voltage U ₁Or U ₂Till, this number as the variable part control audio frequency synthesizer of divide ratio N and with value data with frequency F _jForm is sent to control and monitor console.

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