CN2382074Y

CN2382074Y - Flow meter counter

Info

Publication number: CN2382074Y
Application number: CN 99231994
Authority: CN
Inventors: 冯畅
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-29
Filing date: 1999-06-29
Publication date: 2000-06-07
Anticipated expiration: 2009-06-29

Abstract

The utility model relates to a counter which is used for a flowmeter. The utility model comprises a housing 6, a detecting component, and a counting scale 4 which is fixed on one end of a rotating shaft which penetrates through the housing 6. The utility model is characterized in that the counting disk 4 is a coding disk. The utility model is convenient for a computer or relevant electronic equipment to collect data and manage the data. In the utility model, the counting loss of the flowmeter and reduced use requirements are not caused because of various faults when electric supply is discontinuous. Through the utility model, the data can be reliably preserved. In addition, the adoption of the utility model is convenient for reliable management with high efficiency and low cost for the flowmeters which are of large amount, are of dispersal, and are in a bad use environmental condition.

Description

A kind of flowmeter counter

The utility model relates to a kind of counter that is used for flowmeter.

The electronic counting mode of current flux meter flow is to drive pulse producer by flowmeter to send electric pulse, by secondary instrument (special electronic equipment, computer measurement and control system etc.) to counting in the electric arteries and veins.Because need be during counting to the pulse producer and the secondary instrument uninterrupted power supply of flowmeter, otherwise just can counting loss, and pulse counting process and data are preserved the influence that is subject to external disturbance such as electromagnetism, so its service condition has certain requirement, reliability is not high enough.

The purpose of this utility model is to provide a kind of counting accurate, data acquisition, convenient management, the flowmeter counter that reliability is high.

The utility model is achieved in that a kind of flowmeter counter, and it comprises housing, detection components and the counting scale that is fixed on rotating shaft one end that passes housing, and it is characterized in that: described counting scale is a kind of code-wheel.

When Photoelectric Detection assembly that described detection components is made up of luminescent device, diaphragm, photoelectricity receiving converter, luminescent device is positioned at a side of described counting scale, and diaphragm and photoelectricity receiving converter are positioned at the opposite side of described counting scale; Described in this case counting scale is made up of the coding road that photic zone and light tight district form.

Photic zone on the above-mentioned counting scale and light tight district rearrange by the coding road that binary code forms, also can be to rearrange by the coding road that reflected code forms, also can be the counting scale that rearranges by the coding road that the circulation binary-coded decimal code (BCD code) forms.

During use, the rotating shaft of counter links to each other with the rotating shaft of flowmeter, the photoelectricity receiving converter links to each other with computing machine or associated electronic device, luminescent device and power connection, when the flowmeter rotating shaft is rotated, the rotating shaft and the counting scale that drive counter rotate, at this moment, the photic zone of the light that sends from luminescent device by counting scale is through after being carved with the diaphragm of slit, forming a thin arrow beam of light shines on the photoelectricity receiving converter, having or not the level height of irradiate light decision photoelectricity receiving converter, also is ＂ 1 ＂ and two states of ＂ 0 ＂, the signal combination of each photoelectricity receiving converter, promptly reflect the digital quantity of coding according to certain rules, represented counting scale to turn over the size of angle, also just represented the integrated flow of flowmeter, counting scale turns over one group of number of angle correspondence and then can read from the output cable or the interface of scrambler.

When described detection components adopts with counting scale directly contacts electric brush type detection components, described in this case counting scale is made up of the coding road that conduction region and non-conductive area form.

Conduction region on the above-mentioned counting scale and non-conductive area or the coding road that rearranges or rearrange or form by the circulation binary-coded decimal code (BCD code) by the coding road that reflected code forms by the coding road that binary code forms rearrange.

When the coding road that described counting scale forms by binary code rearranged, for accurate reading, its high coding road was provided with two detection heads, also is leading detection head and hysteresis detection head, carries out logic determines by relevant circuit or software then.

Obviously, the coding road bar number of counting scale has been represented digital figure place, and it changes as required, in order to improve figure place significantly, can a plurality of counting scales be formed a kind of composite coding dish by certain ratio of gear by mechanical drive.This composite coding dish is made up of two or more code-wheels; Be meshing with each other with the gear of suit in the rotating shaft that code-wheel links to each other; In order to solve accurate carry, the two detection heads of lead and lag are set on all high coding dishes are all encoded, and carry out logic determines by relevant circuit or software.

Output signal of the present utility model is an electric signal, and it is convenient to computing machine or electronic equipment image data, and to data handle, teletransmission etc.; During its counting, do not need externally fed, thereby avoided occurring, reduced request for utilization because of power supply is interrupted the situation that causes counting loss and loss of data; And external interference such as electromagnetism do not influence counting of the present utility model, can not change and destroy its data, and reliability is high.This shows that very important to those data, quantity is more and disperse, the comparatively abominable flowmeter of environment for use condition carries out reliably, efficiently, management cheaply, adopt to the utlity model has very big superiority.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1: the structural representation that is the utility model embodiment 1;

Fig. 2: be the structural representation that counting scale is encoded by reflected code among Fig. 1;

Fig. 3: be the structural representation that counting scale is encoded by binary code among Fig. 1;

Fig. 4: be a logic judging circuit figure;

Fig. 5: the structural representation that is the utility model embodiment 2;

Fig. 6: the structural representation that is the utility model embodiment 3;

Fig. 7: the A that is Fig. 6 is to figure.

Referring to Fig. 1 as can be known: it comprises housing 6, and detection components and the counting scale 4 that is fixed on rotating shaft 1 one ends that pass housing 6 is characterized in that: described counting scale 4 is a kind of code-wheel.

Detection components is made up of luminescent device 5, diaphragm 3, photoelectricity receiving converter 2 in this example, wherein is positioned at the luminescent device 5 of described counting scale 4 one sides and the diaphragm 3 and the photoelectricity receiving converter 2 of opposite side and is fixed on the housing 6.

Described counting scale 4 is made up of the coding road that photic zone and light tight district form.Its photic zone and light tight district can rearrange by the coding road that the circulation binary-coded decimal code (BCD code) forms; Also can rearrange by the coding road that reflected code forms, shown in Figure 2 is exactly the synoptic diagram that adopts four reflected code counting scales; Also can rearrange by the coding road that binary code forms, shown in Figure 3 is exactly the synoptic diagram that adopts tetrad sign indicating number counting scale, when counting scale adopts the binary code coding, it also is leading detection head 8 and hysteresis detection head 9 that high-order code channel except that lowest order need be installed two detection heads, and carry out logic determines by relevant circuit or software, Fig. 4 is a logic judging circuit figure, like this can accurate reading.

Referring to Fig. 5 as can be known: different is that the detection components that its adopts is a brush 7 with embodiment 1 for it, and brush 7 directly contacts and is fixed on the housing 6 with counting scale; Described counting scale 4 is made up of the coding road that conduction region and non-conductive area form.

Conduction region on the described counting scale 4 and non-conductive area coding road same or that rearrange or rearrange or form by the circulation binary-coded decimal code (BCD code) by the coding road that reflected code forms by the coding road that binary code forms rearranges.

Referring to Fig. 3: when the coding road that described counting scale 4 forms by binary code rearranged, it also was leading detection head 8 and hysteresis detection head 9 that the high coding road except that lowest order is provided with two detection heads.

From embodiment 1 as can be seen, the code channel bar number of counting scale has been represented digital figure place, it can change as required, but the increase of code channel bar number is limited, in order to improve digital figure place significantly, can adopt a plurality of code-wheels to form the composite coding dish by certain ratio of gear by mechanical drive.As shown in Figure 6: a kind of flowmeter counter comprises housing 6, in housing 6, establish a composite coding dish, it is made up of two counting scales 4, one is low level counting scale 4-1, one is high-order counting scale 4-2, be meshing with each other with the gear Z1 and the Z2 of suit in the rotating shaft 1 that counting scale 4 links to each other, and a side of two counting scales 4 all has luminescent device 5, opposite side all has diaphragm 3 and photoelectricity receiving converter 2.

Referring to Fig. 7: for accuracy of reading, it also is leading detection head 8 and hysteresis detection head 9 that two detection heads need be installed in all coding roads of high-order counting scale 4-2, and it can be judged by circuit shown in Figure 4.

Claims

1. flowmeter counter, it comprises housing (6), detection components and the counting scale (4) that is fixed on rotating shaft (1) one end that passes housing (6) is characterized in that: described counting scale (4) is a kind of code-wheel.

2. flowmeter counter as claimed in claim 1, it is characterized in that: described detection components is made up of luminescent device (5), diaphragm (3), photoelectricity receiving converter (2), wherein luminescent device (5) is positioned at a side of described counting scale (4), and diaphragm (3) and photoelectricity receiving converter (2) are positioned at the opposite side of described counting scale (4); Described counting scale (4) is made up of the coding road that photic zone and light tight district form.

3. flowmeter counter as claimed in claim 2 is characterized in that: photic zone on the described counting scale (4) and light tight district or the coding road that rearranges or rearrange or form by the circulation binary-coded decimal code (BCD code) by the coding road that reflected code forms by the coding road that binary code forms rearrange.

4. flowmeter counter as claimed in claim 1 is characterized in that: described detection components is brush (7), and brush (7) is positioned at a side of described counting scale (4), and directly contacts with counting scale (4); Described counting scale (4) is made up of the coding road that conduction region and non-conductive area form.

5. flowmeter counter as claimed in claim 4 is characterized in that: conduction region on the described counting scale (4) and non-conductive area or the coding road that rearranges or rearrange or form by the circulation binary-coded decimal code (BCD code) by the coding road that reflected code forms by the coding road that binary code forms rearrange.

6. as claim 3 or 5 described flowmeter counters, it is characterized in that: when the coding road that described counting scale (4) forms by binary code rearranged, the high coding road except that lowest order was provided with two detection heads (8,9).

7. flowmeter counter as claimed in claim 1 is characterized in that: described counting scale (4) is a kind of composite coding dish.

8. flowmeter counter as claimed in claim 7 is characterized in that: described composite coding dish is made up of two or more counting scales; The gear (Z1, Z2) that suit is gone up in the rotating shaft that links to each other with counting scale (1) is meshing with each other; Whole codings road of all high coding dishes is provided with two detection heads (8,9).