CN2506982Y - Remote controll meter read out device - Google Patents

Abstract

A remote control automatic meter reading device of the utility model comprises a digital code wheel or a dial on which the characteristic substance for each number is marked according to the coding requirement. A digital reader is arranged on the number retrieval position corresponding with the characteristic substance marking point. The reader comprises sensor probes capable of reading the characteristic substance. As the user management network established by the remote control automatic meter reading device, the utility model can be N meter reading devices which are connected with the display screen, the printer, and the database of the central control room through the network, and when the same number is read two successive times controlled by a software, the number is displayed, stored, or recorded as one effective reading.

Description

Remote control automatic meter-reading device

The utility model belongs to the numerical coding Meter Reading Device, especially for the remote control reading device of numeral on mechanical type numeral code wheel or the dial plate.

Mechanical type numeral code wheel or digital dial plate are widely used on the measuring apparatus such as water meter, ammeter, gas meter and heating power table, and the meter reading mode has two kinds at present:

1) manually register one's residence and check meter: this is a kind of mode that generally adopts at present, and shortcoming is apparent.

2) step-by-step counting mode: check meter though needn't register one's residence, must guarantee uninterrupted power supply, in case the just possibility pulse-losing that has a power failure causes counting error.Frequency of power cut is many more, and the time is long more, and the error of accumulative total will be big more, and can't revise, so this mode can't be applied.

The mode of making a video recording in addition also is feasible from principle, but the information redundancy amount is too big, and the also corresponding increase of channel capacity that transmission needs also will have the special identification Processing Algorithm of a cover.The camera volume can't be installed in greatly in the gauge outfit, and fringe cost is also much higher, so do not see employing so far.

The purpose of this utility model is to propose a kind of remote control automatic meter-reading device technical scheme, to replace present various meter reading mode, realizes that stem-winder shows the networking automatic management, as the automatic management in building and chemical plant etc.

Remote control automatic meter-reading device of the present utility model comprises digital code wheel or dial plate, is provided with on code wheel or the dial plate to indicate each digital characteristic body, and the character pair thing indicates some the digital reading device is set on the peek position; Reader is constituted by the sensor probe that can distinguish this characteristic body.Meter Reading Device described in the utility model can be the magnetoelectricity structure, and then the numerical characteristic thing is a magnet steel, and reader is made of the hall device that can produce response signal.Meter Reading Device described in the utility model also can be the photo-electric structure, and then the numerical characteristic thing is a reflector, and reader is made of light source and the photosensitive device that can produce optical response signal; Perhaps the numerical characteristic thing is a luminescent device, and reader is made of the photosensitive device that can produce optical response signal.Meter Reading Device described in the utility model also can be a switch oscillatory circuit structure, and reader is made of the switch oscillatory circuit, and the numerical characteristic thing has adopted the material of on-off action.

Embodiment of the present utility model can adopt the long set of scale-of-two 4 bit codes that numeral 0,1,2,3,4,5,6,7,8,9 is encoded, and 4 characteristic bodies are set on each digit position indicate points, each characteristic body has 2 kinds of eigenstates, on the reader correspondence position, be provided with 4 can responding digital characteristic body signal sensor probe.

The utility model embodiment can also adopt the long set of the quaternary 2 bit codes that numeral 0,1,2,3,4,5,6,7,8,9 is encoded, and 2 characteristic bodies are set on each digit position indicate points, each characteristic body has 4 kinds of eigenstates, on the reader correspondence position, be provided with 2 can 4 kinds of status signals of responding digital characteristic body sensor probe.

Embodiment of the present utility model also is included in the method that characteristic body is set on the figure denote point of Meter Reading Device, and promptly the sign characteristic body of each numeral can be constituted by the characteristic body more than two groups, and each characteristic body group can translation and the combination of its stack features thing.

User management network by remote control automatic meter-reading device foundation described in the utility model, can be that N Meter Reading Device is connected with display screen, printer and the database of central control room (CCR) by network, by the double meter reading of software control numeral when identical as a valid reading demonstration or storage, record.

Embodiment of the present utility model is as shown in drawings:

Fig. 1: the Meter Reading Device synoptic diagram that is used for ammeter;

Fig. 2: a numeral is area and 4 characteristic body position views shared on the little code wheel of 4mm at width;

Fig. 3: a numeral is area and 4 characteristic body position views shared on the big code wheel of 3mm at width;

Fig. 4: three kinds of reader combination synoptic diagram of four-point, wherein Fig. 4-1 is for concentrating 4 combinations, and Fig. 4-2 is for separating combination up and down, and Fig. 4-3 separates combination about being;

Fig. 5: the dimensional drawing of sensor (hall device);

Number expression respectively of sign among the figure:

1, gauge outfit, 2, module (1), 3, module (0), 4, module (n), 5, power supply, 6, bus interface circuit, 7, clock, 8, circuit board.

In conjunction with the embodiments the utility model is specified:

The utility model at first is to consider can select suitable code length according to set sizes for a character set, and the position dot matrix (or sensitive spot) of characteristic of correspondence thing, determines corresponding sensor probe combination (to call reader in the following text).Space encoder that different sets is different with correspondence and reader.For example the simplest scale-of-two can be adopted, also multibit code can be adopted.For the mechanical digital table that dwelling house is used, only require ten characters 0123456789 of identification as electricity, gas, water three tables, all can achieve the goal with 4 scale-of-two or two of 4 systems.Adopt 4 of scale-of-two can discern 16 characters at most.Two of 4 systems also can distinguish 4 ²=16 characters, but require 4 other states of level of reader energy distinguishing characteristic thing.

Be shown as example with digital code wheel, each code wheel has 10 numerals (0123456789), and each digital subtended angle is 36 °.Representational three kinds of code wheels of having seen at present, the shared area of its each numeral is approximately 3 * 6mm ², 3 * 5mm ²With 4 * 5mm ², on this section arc wheel face, inlay the characteristic body that reader is surveyed easily by coding requirement, characteristic body is by the sensitivity characteristic decision of sensitive element, like this Direct Recognition character is converted into the recognition feature thing.Identifying object, sensitivity and distance of center circle are depended in the size of reader and distribution, and suitably adjustment can get optimum Working.

This Meter Reading Device as shown in Figure 1; Comprise reader and circuit board 8, the two can divide body running, and reader will be placed on gauge outfit inside, with digital code wheel or code-disc (identifying object) the formation one on the gauge outfit 1.Reader has photo-electric and magneto-electric etc. multiple, can select by working environment.Consider water environment pollution, should select magneto-electric water meter.

Circuit board can be placed on the gauge outfit outside, if the space allows also can be placed on inside, the two connects with lead.Circuit board 8 has a public clock circuit 7 (multilist share) and several same circuit module 2,3,4 to form, the corresponding code wheel of each module, module is made of negative circuit and trigger, and the meter reading data are delivered letters by bus interface circuit 6 (as shift register).Power supply can be supplied with by the outside, also can be power autonomous 5, and power-on just when only tabling look-up is so electricity consumption is economic.Improved gauge outfit does not influence direct-reading.

In order to verify whether encoding scheme is feasible, and the applicant had done twice experiment, and the Meter Reading Device of development has used following device:

Clock 74LS04 a slice;

Anti-phase reshaper 74LS04 and each a slice of D shape trigger 74LS175 (forming a module).

Demonstrate required additional device 4-10 line code translator 74LS145 is arranged and show usefulness light emitting diode and+the 5V power supply.

Logarithm type drum or dial plate have carried out corresponding transformation, the work of transforming code wheel or dial plate is exactly to press sensitive spot damascene feature thing (the responsive thing of magnet steel or reflecting plate or luminotron or oscillation switch), production in enormous quantities must have mould, to guarantee accurate positioning and to enhance productivity.With two of 4 of scale-of-two or 4 systems, can discern 16 characters at most.Determine 4 sensitive spots or two sensitive spots, can in 16 code characters, select 10 need to use with the minimum code character of characteristic body in order to reduce characteristic body.If area allows also can adopt error correcting code, can correct a place reading mistake as 7 Hamming codes.If the code wheel gap ratio is bigger, its sensitive spot also can be placed on the code wheel side.For decimal number type drum tables such as water, electricity, gas, if only distinguish two states, then characteristic body is by 4 distributions, according to code wheel size location, so that three-dimensional maximum information to be provided.

For the Meter Reading Device code wheel characteristic body distribution scheme of above-mentioned twice experiment (can accurately discern 10 numerals) as shown in the table: table one,

Numeral	Punch position
					0				4
1	1		3
					2	1
3	1		3
					4		2
5		2	3
					6
7			3
					8		2		4
9		2		4

Table two,

Numeral	The characteristic body position
					0			3
1	1			4
					2	1
3	1			4
					4		2
5		2		4
					6
7				4
					8		2	3
9		2	3

Table three,

Numeral	Punch position
					0			3
1		2		4
					2		2
3		2		4
					4	1
5	1			4
					6
7				4
					8	1		3
9	1		3

Top table 1, table 2 and table 3 have provided characteristic body regioselective three kinds of plans of establishment on a word, and the principle that characteristic body is selected is:

1) makes the maximization of characteristic body minimum spacing, so that adopt bigger reader;

2) reduce interference between the characteristic body.

Be also noted that the carry breach of avoiding code wheel in addition.

Each table is that the code character that will adopt obtains through two digits translation and transposition.In above-mentioned twice experiment, magnet steel is all arranged in such a way.The literal that first simulation Meter Reading Device selects for use water meter to use is about 4 * 5mm ², magnet steel is 1mm from border, the left and right sides, and the central point spacing is 2mm, sees shown in Figure 2ly, and 1,2,3,4 are selected sensitive spot, the place of promptly placing magnet steel among the figure.

With the magnet steel test of diameter,, can accurately identify 10 numerals though some is coarse greater than Φ 1.3.Only used a stepping wheel in the experiment, freewheel revolution moving one all stepping wheels add one (forwarding next number to).But the carry relation between the stepping wheel is not demonstrated in current experiment.Magnet steel is to dispose by the characteristic body distribution table that provides later in the experiment, select only allocation plan according to the size of reader sensing element.

Formal Meter Reading Device adopts at present, and most widely used literal is about 3 * 6mm ²A kind of code wheel, the magnet steel spacing is 3mm, is 18 degree to the subtended angle of core wheel, is about 1.5mm from the edge of word up and down, corresponding subtended angle is 9 degree.The width of a word is 3mm, and 1mm is stayed to each limit in the magnet steel center, and centre distance is 1mm, and greater than the magnet steel of Φ more than 1.3, the length of magnet steel is about 1mm with diameter.Shown in Fig. 31,2,3, the 4th, the sensitive spot of placement magnet steel.

Current experiment two stepping wheels (represent double figures, 10 light emitting diodes of every usefulness represent 0123456789) have been demonstrated the carry relation between them, and freewheel rotates hundreds of times, once mistake do not occur, and the result is very satisfactory.In upset test, as long as distance is adjusted accurately, use the hand propelled code wheel, make it maximum deviation occur, at this moment still can accurately identify 10 numerals.Extend to more than two by two stepping wheels, so current experimental result has universal significance.From the practical application angle, it is enough in most of occasions to discern two stepping wheels, is equivalent to mould 100 from data acquisition center and adds.Tested the similar last time that is provided with of current experiment magnet steel, but a translation is arranged.

The code wheel of the minimum of having seen at present, literal is 3 * 5mm ²In order to guarantee that the magnet steel longitudinal pitch is that (size by sensitive element determines 3mm fully, here refer to hall device), its subtended angle should be 21.6 degree, the magnet steel central point is 1mm from the last lower limb of word, the pairing subtended angle of 1mm is 7.2 degree, and magnet steel is 1mm from border, the left and right sides, the magnet steel of available diameter of phi 1～Φ 1.5.

For above three kinds of code wheels, the magnet steel distributed dimension that provides is only for reference, because they are relevant with the size of sensitive element.

The more little bearing accuracy that requires of code wheel is high more, and difficulty is big more, and manual naked eyes location acquires a certain degree of difficulty.Than 3 * 5mm ²Also little code wheel (numeral is too little) sees it also is feasible from principle, but owing to is subjected to magnet steel and sensor bulk to limit and can acquire a certain degree of difficulty.

For than literal 6 * 3mm ²Bigger code wheel is as the literal 6 * 4mm that uses on a kind of gas meter ²Just easier, adopt the utility model scheme to have no difficulty.

The method of characteristic body is set on the sign point of Meter Reading Device, is that the sign characteristic body of each numeral can be constituted by the characteristic body more than two groups, and each characteristic body group can translation and the combination of its stack features thing.

In above-mentioned twice experiment, the magnet steel number that is provided with on each code wheel is 14.Will guarantee when inlaying magnet steel that its end face is parallel with wheel face, it is low to have height to have.Can select the reversed polarity magnet steel for use for little code wheel, to reduce the interference between magnet steel.

Reader is an assembled unit, and multiple combination can be arranged.With 4 be example, as shown in Figure 4:

The reader 1 of Fig. 4-1 is fit to bigger code wheel, and the reader 2 of Fig. 4-2 and the reader 3 of Fig. 4-3 are that a reader is divided into two subdivisions, to be fit to the different code wheel of width.In actual applications, the reader form is by the decision of the distribution mode of characteristic body on the code wheel, and is not necessarily square-folded; Distribute as on dial plate, being wedge or single file.In above-mentioned twice experiment, reader is formed with hall device, has adopted the form of separating reader about being similar among Fig. 4-3, but the dislocation of 1mm and 2mm is arranged.The design of reader is relevant with the gauge outfit inner structure, so just should consider this problem when the design feature thing distributes.

Reader can aware whether characteristic body exists or the state of characteristic body, and point image people's eyes are arranged, but can be not tired, and where it can forward to by loyal your code wheel of telling at present.Relative position between reader and the characteristic body will accurately be adjusted, to guarantee optimum Working.

For magneto-electric, reader selects for use hall device to combine by coding requirement usually, and Fig. 5 provides the size of a kind of hall device (44E).Four-point will be selected a kind of from three kinds of array configurations that Fig. 4 provides by the laying that is coded on the code wheel with 4.Four-point needs 4 signal wires for each code wheel, adds a power lead and a ground wire, and totally 6 lines are connected with circuit board.

In above-mentioned twice experiment, (use 4 * 5mm respectively ²With 3 * 6mm ²Two kinds of code wheels), the form of separating reader select for use among Fig. 4-3 because of literal is too little about, according to the coded portion displacement topped respectively two literal on, just in time corresponding with the magnet steel of encoding.Not necessarily use same sex magnet steel entirely, suitably configuration can make one group of corresponding two N utmost point, then corresponding two the S utmost points of another group.Also can every group each corresponding 1 N utmost point and 1 S utmost point, but can not mix up.In fact after the position of characteristic body was selected, the citation form of reader was also fixed thereupon, and the configuration of magnet steel is relevant with the code wheel size, so the citation form of the configuration of magnet steel and reader all is variable.The sensitive area of reader is parallel with the code wheel face, and twice experiment is for about 162 degree of big code wheel sensitive area subtended angle, and little code wheel is 158 degree.

When adopting electro-optical structures, the set-up mode of light characteristic body and photosensitive probe is identical with the set-up mode of magnet steel during above-mentioned magneto-electric is constructed and hall device.

When adopting switch oscillatory circuit structure, the set-up mode of characteristic body and switch oscillatory circuit probe is also identical with the magnet steel and the set-up mode of hall device in the above-mentioned magneto-electric structure.

The advantage of the utility model Meter Reading Device is: at first, because this Meter Reading Device is only relevant with the current state of stem-winder, and irrelevant with historical process, can not introduce error so have a power failure.Comparatively speaking, the step-by-step counting mode does not allow to have a power failure, and meter will occur leaking in case have a power failure.Secondly, the working method of this Meter Reading Device is memoryless, at random, needs work (tabling look-up) reading of just switching on.Can read continuously, also can read once freely to select by several days some months.Once more, read data without any need for handling and storage and directly send data center by data bus, also may be in data center, and change user account number over to by tailor-made approximately simple conversion.

The utility model is a real-time working in addition, verifies by total amount, just can find the tax evasion incident easily.

The utility model is worked at random, just electricity consumption when only tabling look-up, and not electricity consumption At All Other Times is so electricity consumption is economic.

The cost of the utility model device is very low, and each module has only two block assemblies, and every table assesses the cost by two code wheels of identification and has only about 50 yuan.Producing cost in enormous quantities also can be low.

The technology path that the utility model device is realized has two kinds, is example with the code wheel table:

1) guarantee that former base table is constant, promptly Biao gear train, numeral demonstration and shell are constant, only reader are put in the table.On code wheel, be inlaid with characteristic body.Improved like this table, can't see from the outside with former table has obvious difference, just many several lead-in wires and circuit boards.

2) second kind of approach is that base table is done part transformation.Only keep the minority code wheel, volume can be little like this, can realize that electronic digital shows.Reader becomes a module to be put into gauge outfit inside with the circuit board integrability.

Enforcement of the present utility model also comprises customer service management data net: adopt the utility model device can conveniently realize the customer service networking management, if N (do not limit by the span of N, can be several families, also can be several ten thousand families) individual user is a sub-district, the utility model Meter Reading Device that each user is used links to each other with the industry administrative center that is engaged in by network, can regularly generally investigate or random inspection, the data that read are changed through suitable, calculate the payable expense of user etc., and insert temporal information and deposit user account in, or real time print and demonstration.

For misreading of preventing that the code wheel transition state from causing, table look-up at every turn and will read twice continuously at least, be greater than 2 seconds at interval, to avoid the transit time of code wheel state exchange.If twice reading difference then should be read again, to revise error in reading.

The utility model is applicable to various mechanical digital tables, as ammeter, water meter, gas meter, heating power table etc., and every place that has mechanical character such as code wheel, code-disc to show, the method that all available the utility model provides changes mechanical character information into electrical information.The occasion that mechanical character shows is used in inconvenience before some, also can use now, and realize network management with this method.

Claims (6)

1 one kinds of remote control automatic meter-reading devices comprise digital code wheel or dial plate, it is characterized in that being provided with on code wheel or dial plate indicating each digital characteristic body, and correspondence is provided with the digital reading device on the peek position; Reader is constituted by the sensor probe that can distinguish this characteristic body.

2 Meter Reading Devices as claimed in claim 1 is characterized in that described Meter Reading Device is the magnetoelectricity structure, and the numerical characteristic thing is a magnet steel, and reader is made of the hall device that can produce response signal.

3 Meter Reading Devices as claimed in claim 1 is characterized in that described Meter Reading Device is the photo-electric structure, and the numerical characteristic thing is a reflector, and reader is made of light source and the photosensitive device that can produce optical response signal.

4 Meter Reading Devices as claimed in claim 1 is characterized in that described Meter Reading Device is the photo-electric structure, and the numerical characteristic thing is a luminescent device, and reader is made of the photosensitive device that can produce optical response signal.

5 as claim 1 or 2 or 3 or 4 or 5 described Meter Reading Devices, it is characterized in that adopting the long set of scale-of-two 4 bit codes that numeral 0,1,2,3,4,5,6,7,8,9 is encoded, and 4 characteristic bodies are set on each digit position indicate points, each characteristic body has 2 kinds of eigenstates, on the reader correspondence position, be provided with 4 can responding digital characteristic body signal sensor probe.

6 as claim 1 or 2 or 3 or 4 or 5 described Meter Reading Devices, it is characterized in that adopting the long set of the quaternary 2 bit codes that numeral 0,1,2,3,4,5,6,7,8,9 is encoded, and 2 characteristic bodies are set on each digit position indicate points, each characteristic body has 4 kinds of eigenstates, on the reader correspondence position, be provided with 2 can 4 kinds of status signals of responding digital characteristic body sensor probe.

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