CN2541819Y

CN2541819Y - Remote transcriber

Info

Publication number: CN2541819Y
Application number: CN 02211233
Authority: CN
Inventors: 蹇永成
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-15
Filing date: 2002-04-15
Publication date: 2003-03-26
Anticipated expiration: 2012-04-15

Abstract

The utility model relates to a remote meter reading device, a code wheel which requires telemetering is provided with at least four translucent holes, the apart angle on a circumference of a photoelectric sensor is integer multiple of 36 degrees, thereby when the code wheel is rotated by a natural number, the translucent holes are rotated by 36 degrees, the photoelectric sensor is positioned, and when different numbers from zero to nine appears, different code groups will be transmitted by the photoelectric sensor, and the reading process is stopped when carry course is measured.

Description

A kind of remote meter reading device

The utility model belongs to field of instrumentation technology, refers in particular to a kind of remote meter reading device

At present, remote meter reading device of the prior art can only convert the amount of being converted to one or several pulse outputs with amount of every conversion, can not directly represent natural number, if will obtain natural number, and then must advanced horizontal pulse numeration.And the required electronic equipment cost height of pulse numeration, reliability is low, is difficult to the effect that reaches desirable in actual use.

The purpose of this utility model is in order to overcome above-mentioned shortcoming, workout cost, reliability and the problem of safeguarding the aspect, designed a kind of photoelectric sensor group, the data-switching of mechanical type register is become specific number output, check meter directly to read mode, and the carry process problem when having solved carry, error free, but and not timing read.

The purpose of this utility model is achieved in that

According to the principle of photoelectric sensor, when being arranged on the sensor, the illumination of certain intensity just has signal output.Have or not rayed just to represent no signal.Utilize this principle, can utilize the combination of at least 4 photoelectric sensors, when several printing opacities or lighttight position on code wheel according to necessarily regularly arranged, at diverse location, photoelectric sensor can make 09 natural number be transformed into array output by the sign indicating number (0 or 1) of photoelectric sensor output

Need to make on the code wheel of teletransmission the position of some printing opacities at mechanical counter, each takes turns printing opacity place, at least 4 place, be sidelong at one of printing opacity and put light source, the opposite side electric transducer of giving out light, light source and photoelectric sensor are fixed, do not rotate together with code wheel, the position of these printing opacities and number are to determine according to the arrangement position of every at least 4 photoelectric sensors and code character, and photoelectric sensor apart angle on circumference is 36 ° a integral multiple, when the code wheel revolution is crossed a natural number like this, to make printing opacity and lighttight position and then rotate 36 °, different group code output will appear in photoelectric sensor, if with each code wheel of mechanical counter all like this way can reach the digital conversion on the register window is become corresponding digital output, a carry process when forwarding next digit position to by a digit position, digital wheel is arranged in addition, this moment, the window reading that can not accurately reflect digital wheel was made up in the output of photoelectric sensor, therefore on the code wheel of the more low level of the data least significant bit (LSB) that needs teletransmission, a carry process is installed and detects photoelectric sensor, sensor has signal output when entering the carry process, collect this signal and stop the collection of data by single-chip microcomputer, the sensor groups of gathering with the external position single-chip microcomputer on each code wheel that needs teletransmission in transition state is exported, and the combination of sensor groups output is converted to corresponding decimal number and teletransmission.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a kind of concrete structure synoptic diagram of the present utility model.

Fig. 2, the 4th, the cut-open view of Figure 1A _ A.

Fig. 3, the 5th, the cut-open view of Figure 1B _ B.

With reference to Fig. 1,2,3 are described as follows

The fixed head (2) that light emitting diode (4) and photoelectric sensor (3) will be housed is fixed on the certain position of register, Fig. 2, and the 4th, need the code wheel of teletransmission, do 5 light holes (5) on code wheel, its position is pressed certain angle and is arranged, and light hole can also can be in the side of code wheel on the edge of code wheel, Fig. 2,3 light holes on the edge of code wheel, Fig. 4,5 sides at code wheel, accompanying drawing 2, light hole position in 4 is in following numeral place, i.e. " 1 ", " 2 ", " 3 ", " 4 ", " 6 ", photoelectric sensor is in numeral " 2 ", " 3 ", " 4 ", " 5 " are located, and light hole also and then rotates when code wheel rotates.Seeing from figure, is 1 o'clock from the window reading, and the state of 4 photoelectric sensors is that the d place is light tight, output is " 0 ", a, b, c place printing opacity, output are " 1 ", a, b, c, the array output of d is " 1110 ", when one of code wheel rotation, when promptly the window reading is " 2 ", a, b, c, the array output of d is " 1101 ".The corresponding special code of 0 to 9 number such as following table institute formula.

Numeral	0	?1	?2	?3	?4	?5	?6	?7	?8	?9
Numeral	0	?1	?2	?3	?4	?5	?6	?7	?8	?9	Correspondence code	1111	?1110	?1101	?1010	?0100	?1000	?0000	?0001	?0011	?0111

No matter how arrange the position of photoelectric sensor and light hole, as long as ten natural sign indicating numbers of 0_9 do not repeat all can.Can see that in addition the output that forwards sensor groups the carry process of next position to from a digit position at code wheel can not accurately reflect the reading of window, therefore need the carry process to detect, as Fig. 3,5 are forwarded in the process of numeral 0 at the low level code wheel by numeral 9, an adjacent high position produces carry, therefore when the window reading of carry process detection wheel is between numeral 9 and the numeral 0, photoelectric sensor has signal output, single-chip microcomputer detects this signal, stop reading to numeration wheel, can reading in other position, and change the output of sensor groups into corresponding decimal number, for reliable detection, the radian of light hole should be more than or equal to 36 °.

Claims

1. remote meter reading device, needing on the mechanical counter to it is characterized in that to have 4 light holes at least on each code wheel of teletransmission, be fixed at least 4 of photoelectric sensors on each code wheel on the fixed head, the angle on the circumference between the sensor is 36 ° a integral multiple, has the carry process to detect.

2. a kind of remote meter reading device as claimed in claim 1 is characterized in that: the angle on the circumference on the same code wheel between the photoelectric sensor is 36 ° a integral multiple, and the position of light hole and number are to determine according to the arrangement position of every at least 4 photoelectric sensors and code character.

3. a kind of remote meter reading device as claimed in claim 1 is characterized in that: have the carry process to detect, a carry process detecting sensor is installed on arbitrary code wheel of the more low level of the data least significant bit (LSB) that needs teletransmission, sensor is had any different in the signal output of other positions when entering the carry process, collect this signal and stop collection by single-chip microcomputer other code wheel data, the sensor groups of gathering with the external position single-chip microcomputer on each code wheel that needs teletransmission in the carry process is exported, and the combination of sensor groups output is converted to corresponding decimal number and teletransmission.