CN2833522Y

CN2833522Y - Dual-magnetic head dual-sensor counting apparatus

Info

Publication number: CN2833522Y
Application number: CN 200520122407
Authority: CN
Inventors: 李文国; 季维平; 潘柯
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-09
Filing date: 2005-09-09
Publication date: 2006-11-01
Anticipated expiration: 2015-09-09

Abstract

The utility model discloses a double-magnetic head and double-sensor counting device. The utility model is provided with two sensors which are provided with the self keeping function of on-off state. Thee different states of the sensors are induced out by the positive rotation or the reverse rotation of a double-magnetic head rotating wheel, as a consequence, the positive rotation or the reverse rotation of a flow instrument are accurately judged and the metering error caused by the reverse rotation is corrected by a microcomputer to ensure the accuracy of a far transmission measuring meter. The structure of the utility model is as follows: the double-magnetic head and double-sensor counting device includes the sensors, a magnet steel, a rotating wheel, a shielding cover and a bracket. The utility model is characterized in that: the rotating wheel is mounted on the bracket, an N pole magnet steel and an S pole magnet steel which are provided with different polarity are oppositely arranged on the diameter positions of the rotating wheel, and the two sensors which are provided with the self keeping function of the on-off state are arranged on positions corresponding with the magnet steels.

Description

Dual-magnetic head dual sensor counting assembly

Technical field

The utility model relates to a kind of counting assembly, relates in particular to a kind of dual-magnetic head dual sensor technique device, can be used for the remote meter reading of measuring instruments such as water meter, ammeter, gas meter.

Background technology

The utility model is former utility model patent 99219172.6,01220703.4 and 99206865.7 development, in 99219172.6 and 01220703.4, all adopted two magnetic induction heads, but only adopted a sensor with on off state self-retaining function.Though and in 99206865.7, adopted two sensors, what adopt is single magnetic induction head, and sensor does not have self-retaining function yet.The induction mode of these counting assemblys has a general characteristic, that is: no matter the induction magnet-wheel is just changeing still reversing, the counting assembly counting that all does as usual.This just makes some flow instruments under the situation that water (or gas) flows backwards, with abnormal discharge record come in, caused error.

Summary of the invention

The purpose of this utility model is that two sensors with on off state self-retaining function are set, induce the different conditions of sensor by the forward or reverse of dual-magnetic head runner, thereby judge that accurately flow instrument is just to change or reverse, the error in dipping correction that to reverse and be caused by microcomputer is to guarantee the accuracy of teletransmission gauging table.

For achieving the above object, the utility model has adopted following technical scheme: a kind of dual-magnetic head dual sensor counting assembly, it comprises sensor, magnet steel, runner, radome, support, it is characterized in that: rack-mount at described runner, be oppositely arranged the magnet steel of the opposed polarity of a N utmost point and a S utmost point in the diametrical position of runner, two sensors with on off state self-retaining function be set with the corresponding position of magnet steel.

Angle is less than 180 ° between described two sensors.

Described sensor outer setting one radome.

Dual-magnetic head dual sensor counting assembly of the present utility model comprises sensor, runner, the magnet steel of the N utmost point that radome and the diametrical position on runner are oppositely arranged and the opposed polarity of a S utmost point, its characteristic is that corresponding position is provided with two sensors with on off state self-retaining function beyond the circumference of magnet steel runner, these two sensors are provided with angle less than 180 ° in magnet steel runner circumference range, sensor will select to have the sensor of on off state self-retaining function, that is: opening or closing of sensor will be controlled by the induction of magnetic N or magnetic S respectively, and under the situation of not conversion induction pole, on off state can remain unchanged, and this class sensor can be with having the tongue tube (describing in detail in the patent 99219172.6) that adheres to magnet steel, have the Hall of self-locking function and Wei Gen sensor etc.

Because these sensors all are subjected to the influence of magnetic field induction power, the interference of irregular or artificial magnetic force for fear of the external world can be provided with a radome in the outside of sensor device.

Description of drawings

Fig. 1 is the utility model first example structure synoptic diagram;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the utility model second example structure synoptic diagram;

Fig. 4 is the A-A cut-open view of Fig. 3.

Wherein, 1 sensor. 2 magnet steel. 3 runners. 4 radomes. 5 supports. 6 glass.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.

Embodiment one:

Fig. 1, Fig. 2 for sensor 1 be arranged on water gage glass upper and lower and wherein and magnet steel 2 be arranged on embodiment on the indicator of water gauge runner 3.

The sensor 1 that has the on off state self-retaining function among Fig. 1 can be placed in the glass 6 or it is upper and lower, with sensor 1 corresponding position be radome 4.In the diametrical position of runner 3 magnet steel 2 of a N utmost point and a S utmost point is arranged, runner 3 is installed on the support 5.Among Fig. 2, the angle of two sensors 1 is less than 180 °.

Embodiment two:

Fig. 3, Fig. 4 are arranged on the synoptic diagram of the embodiment of water meter, ammeter or gas meter inside for sensor 1 and magnet steel 2, runner 3.

Among Fig. 3, runner 3 is installed on the support 5, and the magnet steel 2 of a N utmost point and a S utmost point is set on the diametrical position of runner 3, with magnet steel 2 corresponding positions two sensors 1 is arranged, with sensor 1 relevant position be radome 4.The angle that two sensors is 1 is less than 180 °, as shown in Figure 4.

Principle of work of the present utility model is: sensor 1 is controlled by magnetic force induction, and for example: when being in " opening " state by the induction of the S utmost point, the S utmost point transfers back sensor 1 and still remains on "open" state; When the N utmost point on the runner 3 was responded to again, sensor 1 state then became "off" state; The N utmost point transfers back sensor 1 and still remains on "off" state, goes round and begins again in proper order.

Under the water meter normal operation, by clockwise rotating, two sensors 1 is subjected to the alternately induction of N, S on the magnet steel runner always for magnet steel 2, runner 3, and in this case, the order of two sensor states variations is for opening → close → open → close → opening → close ... hocket.At this moment,, the variation of the state that continuously changes because of a sensor then can occur, that is: open → close → close if the situation of water meter reversing is arranged.Reversing has taken place in this explanation magnet steel 2, runner 3, and microcomputer can be discerned this, and carries out correction process.

Claims

1, a kind of dual-magnetic head dual sensor counting assembly, it comprises sensor (1), magnet steel (2), runner (3), radome (4), support (5), it is characterized in that: be installed on the support (5) at described runner (3), be oppositely arranged the magnet steel (2) of the opposed polarity of a N utmost point and a S utmost point in the diametrical position of runner (3), two sensors (1) with on off state self-retaining function be set with the corresponding position of magnet steel (2).

2, dual-magnetic head dual sensor counting assembly according to claim 1, it is characterized in that: angle is less than 180 ° between described two sensors (1).

3, dual-magnetic head dual sensor counting assembly according to claim 1 is characterized in that: described sensor (1) outer setting one radome (4).