JPH04252988A - Snow converage meter - Google Patents
Snow converage meterInfo
- Publication number
- JPH04252988A JPH04252988A JP2416434A JP41643490A JPH04252988A JP H04252988 A JPH04252988 A JP H04252988A JP 2416434 A JP2416434 A JP 2416434A JP 41643490 A JP41643490 A JP 41643490A JP H04252988 A JPH04252988 A JP H04252988A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- snow
- sensor
- output signal
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 19
- 238000010586 diagram Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Measuring Volume Flow (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、積雪の深さ計測に利用
する。[Industrial Application Field] The present invention is used for measuring the depth of snow.
【０００２】本発明は、検出ポールの着雪あるいは積雪
中の空洞のような異常を除外し、積雪深の値を正確に測
定することができる積雪計に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow gauge that can accurately measure the depth of snow by excluding abnormalities such as snow accumulation on the detection pole or cavities in the snow.
【０００３】0003
【従来の技術】従来、この種の積雪計は図１に示すよう
に、検出ポール１と、この検出ポール１の地表面ＧＬか
らの距離に連続的に対応する検出点に配置された積雪の
有無を出力信号として送出する複数のセンサ３と、この
センサ３の出力信号を入力し積雪深の信号を出力する回
路手段（プリント基板）２とを備え、センサ３は図２に
示すように、検出ポール１内の回路手段（プリント基板
）２上にセパレータ１ａ を介在して配置された発光素
子３１および受光素子３２を含む。このように構成され
た従来の積雪計は、発光素子３１が発生する光 （音波
あるいは電波の場合もある） を積雪層に反射させ、ど
の検出点までの受光素子３２が反射光を受けたかによっ
て積雪量を測定していた。図１に示す場合では検出点Ｔ
４ 以上は積雪層がないために光は反射されず、したが
って光が反射される検出点Ｔ１ 〜Ｔ３ までが積雪量
として測定されていた。2. Description of the Related Art Conventionally, as shown in FIG. 1, this type of snow gauge has a detection pole 1 and a snow gauge placed at detection points continuously corresponding to the distance of the detection pole 1 from the ground surface GL. As shown in FIG. 2, the sensor 3 is equipped with a plurality of sensors 3 that send out the presence/absence as an output signal, and a circuit means (printed circuit board) 2 that inputs the output signal of the sensor 3 and outputs a snow depth signal. It includes a light emitting element 31 and a light receiving element 32 arranged on a circuit means (printed board) 2 in the detection pole 1 with a separator 1a interposed therebetween. The conventional snow gauge configured in this way reflects the light (which may be a sound wave or radio wave) generated by the light emitting element 31 on the snow layer, and detects the light depending on which detection point the light receiving element 32 receives the reflected light. The amount of snowfall was being measured. In the case shown in Figure 1, the detection point T
4 and above, the light is not reflected because there is no snow layer, and therefore the detection points T1 to T3 where the light is reflected are measured as the amount of snow.
【０００４】0004
【発明が解決しようとする課題】このような従来の積雪
計は、積雪が地表面ＧＬ上に一様に積層されている場合
には正確な積雪深を検出することができるが、気象状況
の変化によっては図８に示すように検出ポール１に着雪
してしまうことがしばしばみられ、実際の積雪深の値は
Ｔａ であるにもかかわらずＴｂ あるいはＴｃ の高
さをもって積雪深としてしまう問題がある。また、図９
に示すように実際の積雪深はＴａ であるにもかかわら
ず空洞があるためＴｄ の高さをもって積雪深の値とし
てしまう問題がある。[Problems to be Solved by the Invention] Such conventional snow gauges can accurately detect snow depth when the snow is uniformly layered on the ground surface GL, but it is difficult to detect snow depth depending on weather conditions. As shown in Figure 8, depending on the change, it is often seen that snow accumulates on the detection pole 1, and the problem is that the height of Tb or Tc is taken as the snow depth even though the actual snow depth is Ta. There is. Also, Figure 9
As shown in Figure 2, although the actual snow depth is Ta, there is a cavity, so there is a problem in that the height of Td is taken as the value of the snow depth.
【０００５】本発明はこのような問題を解決するもので
、着雪や空洞の存在を判別して積雪深の値を正確に得る
ことができる積雪計を提供することを目的とする。SUMMARY OF THE INVENTION The present invention is intended to solve these problems, and it is an object of the present invention to provide a snow gauge that can accurately obtain snow depth values by determining snow accumulation and the presence of cavities.
【０００６】[0006]
【課題を解決するための手段】本発明は、地表面に立設
される検出ポールと、この検出ポールの地表面からの距
離に対応する多数の検出点に配置され、その検出点にお
ける積雪の有無を出力信号として送出するセンサと、こ
の出力信号を入力とし積雪深を出力する回路手段とを備
えた積雪計において、前記回路手段は、測定時刻に測定
レンジ全長にわたる前記センサの出力信号を取込む手段
と、この手段により取込まれた測定レンジ全長にわたる
前記センサの出力信号をデータとして記憶する記憶手段
と、あらたに取込まれた前記データと少し前の測定時刻
の前記データとを比較し、前記センサごとの変化のうち
非合理的な変化を自動的に除外する比較処理手段とを備
えたことを特徴とする。[Means for Solving the Problems] The present invention includes a detection pole erected on the ground surface and a large number of detection points that correspond to the distances of the detection poles from the ground surface. In a snow gauge that includes a sensor that sends out the presence or absence as an output signal, and circuit means that receives this output signal as an input and outputs snow depth, the circuit means receives the output signal of the sensor over the entire length of the measurement range at the measurement time. storage means for storing as data the output signal of the sensor over the entire length of the measurement range taken in by this means; , and comparison processing means for automatically excluding irrational changes among the changes for each sensor.
【０００７】前記センサは発光素子およびその発光素子
の出力光を受光する受光素子とを含む光反射検出形のセ
ンサであり、前記比較処理手段は、複数の検出ポールに
ついて共通に設けられることが望ましい。[0007] The sensor is a light reflection detection type sensor that includes a light emitting element and a light receiving element that receives the output light of the light emitting element, and the comparison processing means is preferably provided in common for a plurality of detection poles. .
【０００８】[0008]
【作用】地表面に立設された検出ポールの地表面からの
距離に対応する多数の検出点の積雪の有無をセンサが検
出し、回路手段がこの検出信号を入力し積雪深出力とし
て送出する。このようにして送出された測定レンジ全長
にわたる積雪深出力をあらかじめ定められた測定時刻に
データとして記憶しておき、あらたに取込まれたデータ
と比較して各センサごとの変化のうちの非合理的な変化
を自動的に除外する。[Operation] The sensor detects the presence or absence of snow at a number of detection points corresponding to the distance from the ground surface of the detection pole set up on the ground surface, and the circuit means inputs this detection signal and sends it out as a snow depth output. . The snow depth output sent out in this way over the entire length of the measurement range is stored as data at a predetermined measurement time, and compared with the newly captured data, it is possible to detect irrational changes in each sensor. Automatically exclude changes that may occur.
【０００９】例えば、「反射有」の信号を「１」とし、
「反射無」の信号を「０」とすると、信号「１」の状態
から信号「０」の状態になった位置を検出部全長にわた
り記憶し、この新たに記憶した位置と前回計測して記憶
された位置との変化に基づいて着雪あるいは空洞状態か
ら合理的に積雪深の値を判断する。For example, if the signal indicating "reflection is present" is "1",
When the signal of "no reflection" is set to "0", the position where the signal changes from the state of signal "1" to the state of signal "0" is memorized over the entire length of the detection section, and this newly memorized position and the previous measurement are memorized. The value of the snow depth is rationally determined based on the snow accretion or hollow state based on the change in the position.
【００１０】これにより、着雪や空洞が生じた場合でも
その状態を自動的に判別することが可能となり、正確な
積雪深の計測を行うことができる。[0010] As a result, even if snow accretion or cavities occur, the condition can be automatically determined, and the snow depth can be accurately measured.
【００１１】[0011]
【実施例】次に、本発明実施例を図面に基づいて説明す
る。図１は従来例および本発明実施例の構成を示す図、
図２は従来例および本発明実施例のセンサの構成を示す
図（図１に示すＡ−Ａ′断面図）、図３は本発明実施例
の回路手段の構成を示すブロック図である。Embodiments Next, embodiments of the present invention will be explained based on the drawings. FIG. 1 is a diagram showing the configuration of a conventional example and an embodiment of the present invention,
FIG. 2 is a diagram (cross-sectional view taken along the line AA' shown in FIG. 1) showing the structure of a conventional sensor and a sensor according to an embodiment of the present invention, and FIG. 3 is a block diagram showing the structure of a circuit means according to an embodiment of the present invention.
【００１２】本発明実施例は、地表面ＧＬに立設された
検出ポール１と、この検出ポール１の地表面ＧＬからの
距離に対応する多数の検出点Ｔ１ 〜Ｔｎ に配置され
、その検出点Ｔ１ 〜Ｔｎ における積雪の有無を出力
信号として送出するセンサ３と、この出力信号を入力と
し積雪深を出力するプリント基板により構成された回路
手段２とを備え、さらに、本発明の特徴として、回路手
段２には、測定時刻に測定レンジ全長にわたるセンサ３
の出力信号を取込むセンサ出力取込み手段２１と、この
センサ出力取込み手段２１により取込まれた測定レンジ
全長にわたるセンサ３の出力信号をデータとして記憶す
る記憶手段２２と、あらたに取込まれた前記データと少
し前の測定時刻の前記データとを比較し、センサ３ごと
の変化のうち非合理的な変化を自動的に除外する比較処
理手段２３とを備える。The embodiment of the present invention includes a detection pole 1 erected on the ground surface GL, and a large number of detection points T1 to Tn corresponding to the distance of the detection pole 1 from the ground surface GL. The present invention is equipped with a sensor 3 that sends out the presence or absence of snow cover as an output signal at T1 to Tn, and a circuit means 2 constituted by a printed circuit board that receives this output signal as an input and outputs the snow depth. The means 2 includes a sensor 3 that spans the entire length of the measurement range at the measurement time.
a storage means 22 for storing as data the output signals of the sensor 3 over the entire length of the measurement range taken in by the sensor output taking in means 21; Comparison processing means 23 is provided which compares the data with the data at a measurement time a little earlier and automatically excludes irrational changes among the changes for each sensor 3.
【００１３】本実施例では、センサ３は図２に図１のＡ
−Ａ′断面で示すように、発光素子３１およびその発光
素子３１の出力光を受光する受光素子３２とを含む光反
射検出形のセンサを用いるものとして説明するが、音波
あるいは電波を用いて検出することも可能である。In this embodiment, the sensor 3 is shown in FIG.
As shown in the -A' cross section, the description will be made assuming that a light reflection detection type sensor including a light emitting element 31 and a light receiving element 32 that receives the output light of the light emitting element 31 is used. It is also possible to do so.
【００１４】比較処理手段２３は、各地に配置された複
数の検出ポールについて共通に設けられる。The comparison processing means 23 is provided in common for a plurality of detection poles placed at various locations.
【００１５】次に、このように構成された本発明実施例
の動作について説明する。図４は本発明実施例における
処理動作の概要を説明する図である。Next, the operation of the embodiment of the present invention constructed as described above will be explained. FIG. 4 is a diagram illustrating an overview of processing operations in the embodiment of the present invention.
【００１６】検出ポール１に配置されたセンサ３から、
あらかじめ定められた測定時刻に測定レンジ全長にわた
り測定された出力信号（反射ありの場合：「１」、反射
なしの場合：「０」）を回路手段２のセンサ出力取込み
手段２１が取込み、記憶手段２２が連続した信号「１」
の状態から信号「０」の状態になる位置のデータを記憶
する。From the sensor 3 placed on the detection pole 1,
The sensor output acquisition means 21 of the circuit means 2 takes in the output signal measured over the entire length of the measurement range at a predetermined measurement time (with reflection: "1", without reflection: "0"), and stores it in the storage means. Signal "1" with 22 consecutive numbers
The data at the position where the signal changes from the state to the state of "0" is stored.
【００１７】所定時間経過後あらたにセンサ３からの出
力信号が取込まれたときに、比較処理手段２３が前回記
憶された位置データと比較して変化量を算出し、基本判
断、着雪判断、および空洞判断の各処理を行う。When a new output signal from the sensor 3 is received after a predetermined period of time has elapsed, the comparison processing means 23 compares it with the previously stored position data to calculate the amount of change, and makes a basic judgment and snow accumulation judgment. , and hollow judgment processing.
【００１８】まず、基本判断処理では、連続した信号「
１」の状態中に信号「０」の状態が１ビットだけある場
合には信号「１」、すなわち「反射あり」の状態が連続
しているものとし、地表面ＧＬからみて連続した信号「
１」の状態の中に２ビット以上信号「０」の状態があっ
たときには信号「１」の状態の上限値を今回の積雪深の
位置として判断し、算出された変化量からみて下方向に
地表面ＧＬから信号「１」の状態が連続している場合に
は信号「１」の状態の上限位置を積雪深の値とする。First, in the basic judgment process, a continuous signal "
If there is only one bit in the state of signal "0" in the state of "1", it is assumed that the state of signal "1", that is, "with reflection" is continuous, and as seen from the ground surface GL, the continuous signal "
If there are two or more bits of the signal "0" in the "1" state, the upper limit of the signal "1" state is determined as the current snow depth position, and the data is moved downward based on the calculated amount of change. If the state of signal "1" continues from the ground surface GL, the upper limit position of the state of signal "1" is taken as the value of the snow depth.
【００１９】次に、着雪判断処理では、算出された変化
量よりも今回の積雪深の位置が測定時間間隔内に降雪し
得る最大積雪深を考慮して、定めた値以上にプラス側に
変化があったときは、算出された変化量を積雪深とし、
次の測定時の比較値としてその積雪深の位置を記憶手段
２２に記憶する。また、地表面ＧＬから信号「１」の状
態が連続した後に２ビット以上の信号「０」の状態があ
って再び信号「１」の状態がある場合には、信号「１」
の状態の上限値を今回の積雪深の位置とする。Next, in the snow accumulation judgment process, the position of the current snow depth is determined to be on the plus side by more than a predetermined value, taking into account the maximum snow depth that can snow within the measurement time interval, compared to the calculated amount of change. When there is a change, the calculated amount of change is taken as the snow depth,
The position of the snow depth is stored in the storage means 22 as a comparison value for the next measurement. In addition, if the state of the signal "0" of 2 bits or more occurs after the state of the signal "1" continues from the ground surface GL, and then the state of the signal "1" occurs again, the signal "1"
Let the upper limit value of the state be the current snow depth position.
【００２０】さらに、空洞判断処理では、連続した信号
「１」の状態から信号「０」となる位置が前回算出した
変化量よりも測定時間間隔内に溶け得る最大量を考慮し
、定めた値よりも変化があるか否かを判断し、その判断
の結果により前述の基本判断または着雪判断処理と同様
の処理を行う。Furthermore, in the cavity judgment process, a value is determined by taking into consideration the maximum amount that the position where the signal becomes ``0'' from the state of continuous signal ``1'' will melt within the measurement time interval compared to the previously calculated amount of change. It is determined whether or not there is a change, and based on the result of the determination, the same process as the above-mentioned basic judgment or snow accumulation judgment process is performed.
【００２１】図５は本発明実施例における回路手段の具
体的な処理動作の流れを示すフローチャートである。FIG. 5 is a flowchart showing the flow of specific processing operations of the circuit means in the embodiment of the present invention.
【００２２】回路手段２のセンサ出力取込み手段２１が
検出ポール１の各センサ３から出力された信号を取込み
、連続した信号「１」の状態から信号「０」となる位置
を記憶手段２２に記憶し、連続した信号「１」の状態の
間に２ビット以上の連続した信号「０」の状態があるか
否かを判断する。The sensor output receiving means 21 of the circuit means 2 takes in the signals output from each sensor 3 of the detection pole 1, and stores in the storage means 22 the position where the signal becomes "0" from the state of continuous signal "1". Then, it is determined whether there is a state of two or more consecutive signal "0"s between consecutive states of signal "1".
【００２３】２ビット以上の連続した信号「０」の状態
がなければ、信号「１」の状態の上限位置と１０分前に
測定した値とを比較し、小さければ信号「１」の状態の
上限位置を記憶手段２２に比較値として記憶し、信号「
１」の状態の上限位置を積雪深の値とする。大きければ
信号「１」の状態の上限位置と１０分前に測定した値に
６ｃｍを加えた値とを比較し、等しいか、あるいは大き
ければ着雪と判断して信号「１」の状態の上限位置を記
憶手段２２に比較値として記憶し、１０分前に測定した
値を積雪深の値とする。If there is no continuous signal "0" state of 2 or more bits, compare the upper limit position of the signal "1" state with the value measured 10 minutes ago, and if it is smaller, the signal "1" state is The upper limit position is stored in the storage means 22 as a comparison value, and the signal "
The upper limit position of state 1 is taken as the snow depth value. If it is larger, compare the upper limit position of the state of signal "1" with the value measured 10 minutes ago plus 6 cm, and if they are equal or larger, it is determined that snow has accumulated and the upper limit position of the state of signal "1" is set. The position is stored in the storage means 22 as a comparison value, and the value measured 10 minutes ago is taken as the value of the snow depth.
【００２４】前述の判断処理で連続した信号「１」の状
態の間に２ビット以上の連続した信号「０」の状態があ
る場合には、地表面ＧＬより最初に２ビット以上信号「
０」となった位置と１０分前に測定した値とを比較し、
大きい場合にはさらに地表面ＧＬより最初に２ビット以
上信号「０」となった位置と１０分前の測定値に６ｃｍ
を加えた値とを比較し、大きい場合には着雪と判断し信
号「１」の状態の上限位置を比較値として記憶し、１０
分前の測定値を積雪深の値とする。In the above-described judgment process, if there is a state of two or more consecutive signal "0"s between successive states of signal "1", the signal "0" of two or more bits is first detected from the ground surface GL.
0" and the value measured 10 minutes ago,
If it is large, add 6 cm from the ground surface GL to the position where 2 bits or more of the signal became "0" for the first time and the measured value 10 minutes ago.
If it is larger, it is determined that snow has fallen, and the upper limit position of the state of signal "1" is stored as a comparison value, and 10
The measured value minutes ago is taken as the snow depth value.
【００２５】地表面ＧＬからみて最初に２ビット以上信
号「０」となった位置が１０分前に測定した値に６ｃｍ
を加えた値よりも小さければ、これも着雪と判断して信
号「１」の状態の上限位置を比較値として記憶し、信号
「１」の状態の上限位置を積雪深の値とする。[0025] Viewed from the ground surface GL, the position where the signal became ``0'' for two or more bits for the first time was 6 cm from the value measured 10 minutes ago.
If it is smaller than the sum of the values, it is determined that snow has fallen, and the upper limit position in the state of signal "1" is stored as a comparison value, and the upper limit position in the state of signal "1" is set as the value of the snow depth.
【００２６】また、地表面ＧＬからみて最初に２ビット
以上信号「０」となった位置が１０分前の測定値より小
さければ、地表面より最初に２ビット以上信号「０」と
なった位置が１０分前に測定した値から６ｃｍ差引いた
値と比較し、大きければ着雪と判断して信号「１」の状
態の上限位置を比較値として記憶し、信号「１」の状態
の上限位置を積雪深の値とする。[0026] Furthermore, if the position where the signal of 2 bits or more becomes "0" for the first time as viewed from the ground surface GL is smaller than the measured value 10 minutes ago, then the position from the ground surface where the signal of 2 bits or more becomes "0" for the first time is smaller than the measured value 10 minutes ago. is compared with the value measured 10 minutes ago minus 6 cm, and if it is larger, it is determined that snow has fallen, and the upper limit position in the state of signal "1" is stored as a comparison value, and the upper limit position in the state of signal "1" is Let be the value of snow depth.
【００２７】地表面より最初に２ビット以上信号が「０
」となった位置が１０分前に測定した値から６ｃｍ差引
いた値に対して等しいか、あるいは小さい場合には、空
洞があると判断して、信号「１」の連続から信号「０」
となる位置の値と１０分前に測定した値との絶対値差を
算出し、１０分前に測定した値に一番近い位置を検索し
て１０分前に測定した値と比較する。[0027] At the beginning, the signal of 2 bits or more is "0" from the ground surface.
” is equal to or smaller than the value measured 10 minutes ago minus 6 cm, it is determined that there is a cavity, and the signal “0” is changed from the continuous signal “1”.
The absolute difference between the value at the position and the value measured 10 minutes ago is calculated, and the position closest to the value measured 10 minutes ago is searched and compared with the value measured 10 minutes ago.
【００２８】検索した位置の値の方が大きければ、さら
に検索した位置と１０分前に測定した値に６ｃｍを加え
た値と比較し、検索した値の方が大きいか、あるいは等
いければ、信号「１」の状態の上限位置を比較値として
記憶し、１０分前に測定した値を積雪深の値とする。If the value of the searched position is larger, the searched position is further compared with the value measured 10 minutes ago plus 6 cm, and if the searched value is larger or equal, The upper limit position of the signal "1" is stored as a comparison value, and the value measured 10 minutes ago is taken as the snow depth value.
【００２９】また、検索した位置が１０分前に測定した
値よりも小さく、かつ検索した位置が１０分前に測定し
た値に６ｃｍを加えた値よりも等しいか、あるいは小さ
い場合には、信号「１」の状態の上限位置を比較値とし
て記憶し、信号「１」の状態の上限位置を積雪深の値と
する。Furthermore, if the searched position is smaller than the value measured 10 minutes ago, and the searched position is equal to or smaller than the value measured 10 minutes ago plus 6 cm, the signal is The upper limit position in the state of "1" is stored as a comparison value, and the upper limit position in the state of signal "1" is taken as the value of the snow depth.
【００３０】図６は本発明実施例における１０分前の積
雪状態の例を示す図、図７（ａ） 〜（ｅ） は本発明
実施例における積雪状態に対する判断処理の例を示す図
である。各図中破線は１０分前の積雪深の値を示す比較
値である。FIG. 6 is a diagram showing an example of the snowfall state 10 minutes ago in the embodiment of the present invention, and FIGS. 7(a) to (e) are diagrams showing an example of judgment processing for the snowfall state in the embodiment of the invention. . The broken line in each figure is a comparison value showing the snow depth 10 minutes ago.
【００３１】１０分前の積雪が図６に示す状態にあった
とすると、図７（ａ） の場合は地表面ＧＬからみて信
号「１」が信号「０」になった位置と１０分前の積雪深
の値との差が６ｃｍより小さく、地表面ＧＬから信号「
１」の状態が連続していることを示し、同図（ｂ） の
場合は地表面からみて信号「１」が信号「０」になった
位置と１０分前の積雪深の値との差が−６ｃｍ以下であ
り、地表面から信号「１」が地表面ＧＬから連続してい
ることを示し、同図（ｃ） の場合は地表面ＧＬからみ
て信号「１」が信号「０」になった位置と１０分前の積
雪深の値との差が６ｃｍ以上であることを示す。Assuming that the snowfall 10 minutes ago was in the state shown in Figure 6, in the case of Figure 7(a), the position where signal ``1'' became signal ``0'' and the position 10 minutes ago when viewed from the ground surface GL are The difference with the snow depth value is less than 6 cm, and the signal "
In the case of figure (b), it is the difference between the position where signal “1” becomes signal “0” and the snow depth value 10 minutes ago, as seen from the ground surface. is -6 cm or less, indicating that the signal "1" is continuous from the ground surface GL, and in the case of the same figure (c), the signal "1" becomes the signal "0" when viewed from the ground surface GL. This indicates that the difference between the current position and the snow depth value 10 minutes ago is 6 cm or more.
【００３２】また、同図（ｄ） の場合は信号「１」か
ら信号「０」になる位置が二つ以上あり、地表面ＧＬか
らみて最初に信号「１」から信号「０」になる位置と１
０分前の積雪深の値との差が±６ｃｍより小さいことを
示し、同図（ｅ） の場合は信号「１」から信号「０」
になる位置が二つ以上あり、地表面からみて信号「１」
が信号「０」になる位置と１０分前の積雪深の値との差
が６ｃｍ以上あることを示す。In addition, in the case of (d) in the same figure, there are two or more positions where the signal changes from "1" to "0", and the first position where the signal changes from "1" to "0" as seen from the ground surface GL. and 1
Indicates that the difference from the snow depth value 0 minutes ago is less than ±6 cm, and in the case of (e) in the same figure, the signal changes from signal “1” to signal “0”.
There are two or more positions where the signal is "1" as seen from the ground surface.
This indicates that there is a difference of 6 cm or more between the position where the signal becomes "0" and the snow depth value 10 minutes ago.
【００３３】このような判断処理により図５に示す動作
が行われる。[0033] Through such judgment processing, the operation shown in FIG. 5 is performed.
【００３４】[0034]
【発明の効果】以上説明したように本発明によれば、検
出ポールに着雪があったり、あるいは空洞が生じていて
も、同一信号の連続性、および前の測定時刻における積
雪深の値と今回測定時における積雪深の値との変化量に
基づく判断を行うことができ、正しい積雪深の値を得る
ことができる効果がある。As explained above, according to the present invention, even if there is snow on the detection pole or a cavity is formed, the continuity of the same signal and the current snow depth value at the previous measurement time can be confirmed. It is possible to make a judgment based on the amount of change from the snow depth value at the time of measurement, and has the effect of obtaining the correct snow depth value.
【図面の簡単な説明】[Brief explanation of the drawing]
【図１】 従来例および本発明実施例の構成を示す図
。FIG. 1 is a diagram showing the configurations of a conventional example and an embodiment of the present invention.
【図２】 従来例および本発明実施例のセンサの構成
を示す図。FIG. 2 is a diagram showing the configurations of sensors of a conventional example and an example of the present invention.
【図３】 本発明実施例の回路手段の構成を示すブロ
ック図。FIG. 3 is a block diagram showing the configuration of circuit means according to an embodiment of the present invention.
【図４】 本発明実施例における処理動作の概要を説
明する図。FIG. 4 is a diagram illustrating an overview of processing operations in the embodiment of the present invention.
【図５】 本発明実施例における回路手段の具体的な
処理動作の流れを示すフローチャート。FIG. 5 is a flowchart showing the flow of specific processing operations of the circuit means in the embodiment of the present invention.
【図６】 本発明実施例における１０分前の積雪状態
の例を示す図。FIG. 6 is a diagram showing an example of snowfall conditions 10 minutes ago in the embodiment of the present invention.
【図７】 （ａ） 〜（ｅ） は本発明実施例におけ
る積雪状態に対する判断処理の例を示す図。FIGS. 7(a) to 7(e) are diagrams showing an example of judgment processing regarding the snow cover state in the embodiment of the present invention.
【図８】 従来例における着雪状態時の計測を説明す
る図。FIG. 8 is a diagram illustrating measurement in a snowy state in a conventional example.
【図９】 従来例における空洞発生時の計測を説明す
る図。FIG. 9 is a diagram illustrating measurement when a cavity occurs in a conventional example.
１ 検出ポール
１ａ セパレータ
２ 回路手段（プリント基板）３
センサ
２１ センサ出力取込み手段２２
記憶手段
２３ 比較処理手段
３１ 発光素子
３２ 受光素子1 Detection pole 1a Separator 2 Circuit means (printed board) 3
Sensor 21 Sensor output acquisition means 22
Storage means 23 Comparison processing means 31 Light emitting element 32 Light receiving element
Claims (3)
の検出ポールの地表面からの距離に対応する多数の検出
点に配置され、その検出点における積雪の有無を出力信
号として送出するセンサと、この出力信号を入力とし積
雪深を出力する回路手段とを備えた積雪計において、前
記回路手段は、測定時刻に測定レンジ全長にわたる前記
センサの出力信号を取込む手段と、この手段により取込
まれた測定レンジ全長にわたる前記センサの出力信号を
データとして記憶する記憶手段と、あらたに取込まれた
前記データと少し前の測定時刻の前記データとを比較し
、前記センサごとの変化のうち非合理的な変化を自動的
に除外する比較処理手段とを備えたことを特徴とする積
雪計。1. A detection pole erected on the ground surface, and a sensor arranged at a number of detection points corresponding to the distance of the detection pole from the ground surface, and sends out an output signal indicating the presence or absence of snow at the detection point. and circuit means for inputting this output signal and outputting the snow depth, the circuit means comprising means for capturing the output signal of the sensor over the entire length of the measurement range at the measurement time, and a circuit means for receiving the output signal of the sensor over the entire length of the measurement range at the measurement time; storage means for storing the output signal of the sensor over the entire length of the loaded measurement range as data, and compares the newly loaded data with the data at a measurement time a little earlier, and calculates the change in each sensor. A snow gauge characterized by comprising a comparison processing means for automatically excluding irrational changes.
素子の出力光を受光する受光素子とを含む光反射検出形
のセンサである請求項１記載の積雪計。2. The snow gauge according to claim 1, wherein the sensor is a light reflection detection type sensor including a light emitting element and a light receiving element that receives the output light of the light emitting element.
ルについて共通に設けられる請求項１記載の積雪計。3. The snow gauge according to claim 1, wherein the comparison processing means is provided in common for a plurality of detection poles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416434A JPH0769437B2 (en) | 1990-12-27 | 1990-12-27 | Snow cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416434A JPH0769437B2 (en) | 1990-12-27 | 1990-12-27 | Snow cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04252988A true JPH04252988A (en) | 1992-09-08 |
| JPH0769437B2 JPH0769437B2 (en) | 1995-07-31 |
Family
ID=18524657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2416434A Expired - Lifetime JPH0769437B2 (en) | 1990-12-27 | 1990-12-27 | Snow cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0769437B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001051068A (en) * | 1999-08-17 | 2001-02-23 | Hightech Research Kk | Freezing detection sensor and its sensor element |
| GB2539216A (en) * | 2015-06-09 | 2016-12-14 | Gill Corp Ltd | A depth gauge |
| EP3312551A1 (en) * | 2016-10-24 | 2018-04-25 | Gill Corporate Limited | A depth gauge |
| WO2019026464A1 (en) * | 2017-06-23 | 2019-02-07 | 国立研究開発法人防災科学技術研究所 | Snow cover depth gauge and snow cover depth measurement method using multiple optical sensors |
| US10215887B2 (en) | 2016-10-25 | 2019-02-26 | Gill Corporate Limited | Depth gauge |
-
1990
- 1990-12-27 JP JP2416434A patent/JPH0769437B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001051068A (en) * | 1999-08-17 | 2001-02-23 | Hightech Research Kk | Freezing detection sensor and its sensor element |
| GB2539216A (en) * | 2015-06-09 | 2016-12-14 | Gill Corp Ltd | A depth gauge |
| GB2543690A (en) * | 2015-06-09 | 2017-04-26 | Gill Corp Ltd | A depth gauge |
| GB2539216B (en) * | 2015-06-09 | 2017-07-05 | Gill Corp Ltd | A depth gauge |
| EP3312551A1 (en) * | 2016-10-24 | 2018-04-25 | Gill Corporate Limited | A depth gauge |
| US10215887B2 (en) | 2016-10-25 | 2019-02-26 | Gill Corporate Limited | Depth gauge |
| WO2019026464A1 (en) * | 2017-06-23 | 2019-02-07 | 国立研究開発法人防災科学技術研究所 | Snow cover depth gauge and snow cover depth measurement method using multiple optical sensors |
| JPWO2019026464A1 (en) * | 2017-06-23 | 2020-04-23 | 国立研究開発法人防災科学技術研究所 | Snow depth meter and snow depth measurement method with multiple optical sensors |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0769437B2 (en) | 1995-07-31 |
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