CN86205416U

CN86205416U - Telemetering skip bucket rainfall sensor with a precision of 0.1 mm

Info

Publication number: CN86205416U
Application number: CN 86205416
Authority: CN
Inventors: 吕平
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-08-02
Filing date: 1986-08-02
Publication date: 1987-09-09

Abstract

The utility model relates to a sensor used for metering rainfall in the meteorological instrument. The utility model is characterized in that the capacity of a tipping hopper is not reduced, contact points with different height and are mutually insulated are arranged at the middle of two hoppers of the tipping hopper, and the contact points are made of leading wires which switch on a circuit in turn with the rainfall amount of 0.1 m m. The contact points are used for metering water level in the hopper which does not cause the rotation, and the precision of metering the rainfall amount reaches 0.1 m m.

Description

Telemetering skip bucket rainfall sensor with a precision of 0.1 mm

The utility model belongs to the meteorologic instrument field, is a kind of sensor that is used for measuring rainfall amount.

To the metering of rainfall, the method for using always on the meteorology has several, and a kind of is to measure with rain gage bucket; A kind of is with the siphon rainfall recorder metering, but these two kinds of methods all can not produce electric signal.Can study successfully tipping bucket rain gauge again to the process of rainfall amount and the electric log problem of rainfall in order to solve.Its method is to be provided with two buckets that left and right sides volume equates on an axle, because the axle on the bucket can rotate.So two buckets can about stir because the answering of gravity.A lopside is always arranged in two buckets.And the quarrel of another bucket just in time makes progress, above quarrel, be provided with feed pipe, when rainwater when feed pipe flows in the bucket that quarrel makes progress because water increases gradually, when gravity surpasses tendency the opposing party's gravity, overturn, quarrel tendency the opposing party in the original quarrel in upset back, water in the bucket is promptly drained, and feed pipe is just in time upwards aimed in the quarrel of another bucket again, and the water in the feed pipe flows to again in this bucket, if constantly feedwater in the feed pipe, also upset of these two buckets so with regard to not stopping.Be provided with a permanent magnet on the axle of tipping bucket, magnet of every upset is just inhaled moving tongue tube.Circuit is connected once.So just can get off the process of rainfall and rainfall record.But this method has individual shortcoming, and that struggles against and can not do exactly is too little, and the every bucket of general at present design is 0.5 millimeter of rainfall amount.If every bucket that makes for a short time that bucket is done is that 0.1 millimeter of rainfall amount promptly overturns, two problems will appear like this, and the one, easy generation that the weight of bucket itself is little misses overturns; The 2nd, run into heavy rain or heavy rain, raininess is very big, if 1 minute rainfall is 10 millimeters, then will overturn 100 times with 0.1 millimeter a pipeful of calculating.Will occur like this causing error of omission inadequately because of toggle frequency.Every in addition bucket always has a point tolerance.The number of times that turns over is many more, and cumulative errors will be big more, so these problems still do not solve at present.But 0.5 millimeter requirement of not satisfying meteorological last 0.1 millimeter precision again.

For the precision that makes the tipping bucket rain sensor reaches 0.1 millimeter.Someone once made the double skip rain gage.Method with shunting increases precision, or solves owing to the little malfunction problem that produces of bucket with the method for layering tipping bucket.But these method starting points all are the capacity that reduces to struggle against, but it is little to struggle against, because of the problem of the little generation that struggles against still exists.

This is novel to be that a kind of tipping bucket rain sensor that increases the contact in bucket will be provided.It can make the precision of test rainfall reach 0.1 millimeter the tipping bucket rain sensor under the situation that does not reduce the tipping bucket capacity, can satisfy the requirement of meteorological department's electrical measurement rainfall.

This is novel to be achieved in that lead-in wire at the differing heights that 5 mutually insulateds is set with 0.5 millimeter of rainfall amount above for two buckets of a pipeful of tipping bucket rain sensor is as the contact with the rainwater connection, again the lead-in wire of equal height in two buckets is connected in parallel, then these 5 is received in the testing tool to increase the lead-in wire that 0.1 millimeter rainfall promptly connects primary circuit one by one.The integer of rainfall is with the number of times metering of bucket upset like this; Rainfall below 0.5 millimeter then measures to record the water level that does not cause in the upset bucket.Thereby can record the rainfall situation of whole rainfall with electrical measuring method.And can be accurate to 0.1 millimeter to rainfall.

This is novel monitors water level in the bucket because the contact only need be set in the middle of former tipping bucket, just can realize, so structure is very simple.Because the novel starting point does not lie in the capacity that reduces to struggle against, therefore can not cause the problem of mistake upset, error of omission and cumulative errors increase simultaneously.In addition since the water level in the monitoring bucket only as the mantissa of tired note rainfall, therefore just the measuring accuracy of whole rainfall is not influenced, and increases.Also very simple aspect the processing of electric signal.So realize especially easily.

This novel concrete structure is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the synoptic diagram according to 0.1 millimeter contact of precision tipping bucket rain sensor of this novel proposition.Fig. 2 is the prior art accompanying drawing.

Below in conjunction with details and the working condition of Fig. 1 explanation according to the concrete device of this novel proposition.This device has a rainwater funnel (1) and feed pipe (2).The tipping bucket of two buckets (3), tipping pivot (4), magnet (5), tongue tube (6) about being provided with, support of tipping bucket (7) and water trap (8) are provided with the contact (9) that 5 different lead-in wires of mutually insulated height make, the electrical measurement extension line (10) of contact in the middle of the bucket about tipping bucket (3).

When rainwater when feed pipe (2) flows in the tipping bucket (3) in the bucket that mouth makes progress, rainwater reaches 0.5 millimeter and promptly overturns, quarrel tendency one side.Water in the bucket is drained through water trap (8), feed pipe (2) is upwards aimed in the quarrel of another bucket at this moment, when tipping bucket (3) when stirring magnet (5) inhale a moving tongue tube (6), when the bucket in the rainwater deficiency so that tipping bucket stir, rainwater in the bucket will be connected the contact (9) that 5 lead-in wires of the differing heights that is provided with in the bucket are made one by one according to the size of capacity, record the contact of last connection circuit, just can calculate the rainfall value in the represented bucket in this contact.

Claims

1, at the sensor that is used for measuring rainfall, particularly tipping bucket rain gauge, this sensor has a tipping bucket [3] that is used for measuring rainfall, it is characterized in that:

In two buckets of a, described tipping bucket [3], be provided with the contact [9] of making, measure water level in the bucket with these contacts with the lead-in wire of mutually insulated.

B, described be that to be arranged to differing heights serve as the starting point of connecting circuit with 0.1 millimeter rainfall amount one by one in two buckets with the lead-in wire contact [9] of making.

C, described contact [9] made from lead-in wire are to link together with test circuit.