JP3259792B2 - State quantity detection signal processor - Google Patents
State quantity detection signal processorInfo
- Publication number
- JP3259792B2 JP3259792B2 JP09977493A JP9977493A JP3259792B2 JP 3259792 B2 JP3259792 B2 JP 3259792B2 JP 09977493 A JP09977493 A JP 09977493A JP 9977493 A JP9977493 A JP 9977493A JP 3259792 B2 JP3259792 B2 JP 3259792B2
- Authority
- JP
- Japan
- Prior art keywords
- detection
- range
- bathtub
- state quantity
- signal
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 title claims description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 80
- 230000003321 amplification Effects 0.000 claims description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 238000003287 bathing Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Control For Baths (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば、自動式給
湯風呂装置の浴槽水位検出に用いることができる状態量
の検出信号処理装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a state quantity detection signal processing apparatus which can be used for detecting a bathtub water level of an automatic hot water supply bath apparatus, for example.
【０００２】[0002]
【従来の技術】最近の全自動式の給湯風呂装置は、自動
的に一定温度の湯を所望水位まで浴槽に注湯する機能を
有している。かかる全自動給湯風呂装置によれば手間が
かからず快適な入浴が可能である。ところで、最近の住
宅建築構造の多様化により、給湯器と浴槽との配置関係
をその住宅建築構造に応じて設定する必要がでてきた。
この点、前述の全自動給湯風呂装置によれば、強力なポ
ンプを備えているので、十分対応することができる。
例えば、浴槽Ｂが二階で給湯器Ｗｈが一階というタイプ
（図７参照）、浴槽Ｂが一階で給湯器Ｗｈが浴室外壁に
埋設したタイプ等が、新たに見受けられるようになって
きた（図８参照）。2. Description of the Related Art Recently, a fully automatic hot water supply bath apparatus has a function of automatically pouring a constant-temperature hot water into a bathtub to a desired water level. According to such a fully automatic hot water supply bath apparatus, comfortable bathing can be performed without any trouble. By the way, due to recent diversification of a house building structure, it is necessary to set an arrangement relationship between a water heater and a bathtub according to the house building structure.
In this regard, according to the above-described fully automatic hot water supply bath apparatus, since a powerful pump is provided, it is possible to sufficiently cope with this.
For example, a type in which the bathtub B is on the second floor and the water heater Wh is on the first floor (see FIG. 7), a type in which the bathtub B is on the first floor and the water heater Wh is buried in the outer wall of the bathroom, etc. have been newly found. See FIG. 8).
【０００３】このために、浴槽と給湯器との設置位置の
落差が拡大化し、浴槽の水位を検出しなければならない
範囲が概ね＋４ｍ〜−２ｍに拡がることとなった。かか
る浴槽の水位を精度よく測定することは、運転機能上重
要なことである。水位検出をするための具体的な手段と
しては、給湯器から浴槽に至る給湯配管に設けられた圧
力センサによって水圧を検出し、この水圧にかかる信号
を増幅器Ａにて増幅して制御回路Ｃに導入し、ＡＤ変換
器によりデジタル信号に変換して制御処理を行う構成を
挙げることができる（図９参照）。[0003] For this reason, the drop of the installation position of the bathtub and the water heater is enlarged, and the range in which the water level in the bathtub must be detected is broadened to about +4 m to -2 m. Accurately measuring the water level in such a bathtub is important for the driving function. As a specific means for detecting the water level, a water pressure is detected by a pressure sensor provided in a hot water supply pipe from a water heater to a bathtub, and a signal related to the water pressure is amplified by an amplifier A and transmitted to a control circuit C. There is a configuration in which the control signal is introduced and converted into a digital signal by an AD converter to perform control processing (see FIG. 9).
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ここで
問題になるのは、検出精度である。圧力センサＳおよび
増幅器Ａは精度上問題はないが、ここでのＡＤ変換器は
８ビットであり、水位検出範囲のフルスケール（＋４ｍ
〜−２ｍ）をカバーしようとすると分解能は ６０００（ｍｍ）／２8=２３．４（ｍｍ） ということになり、実用上要求される±２０（ｍｍ）か
らして、このままでは使用不能である。そこで、高分解
能のＡＤ変換器を採用することが考えられるが、ビット
数の増加と共に、回路構成も複雑になり、部品点数が大
幅増加して大型化するので、当然製品価格が大幅に上昇
し、実用的でない。そこで、本発明は、高分解能のＡＤ
変換器を用いることなく、例えば、８ビット程度の汎用
性の高いＡＤ変換器を用いることにより、高密度検出を
実現した状態量の検出信号処理装置を提供することを目
的とする。 However, what matters here is the detection accuracy. Although the pressure sensor S and the amplifier A have no problem in accuracy, the AD converter here is 8 bits, and the full scale (+4 m
If you try to ~-2m) covering the resolution will be referred to as 6000 (mm) / 2 8 = 23.4 (mm), and from a practical required ± 20 (mm), it is unavailable in this state . Therefore, it is conceivable to adopt a high-resolution AD converter. However, as the number of bits increases, the circuit configuration becomes complicated, and the number of parts increases significantly, resulting in a large size. , Not practical. Therefore, the present invention provides a high-resolution AD.
Without using a converter, for example, general-purpose of about 8 bits
High-density detection by using a highly efficient AD converter
The aim is to provide a detection signal processing device for the realized state quantity.
Target.
【０００５】[0005]
【課題を解決するための手段】本発明は、ある検出範囲
内にある状態量を検出し、その状態量を表す検出信号を
発生する検出手段と、この検出手段の前記検出範囲を一
部に重複部分を持たせて複数の検出範囲に分割するとと
もに複数の増幅器を設け、各増幅器に前記検出範囲と対
応する増幅範囲を割り当て、前記増幅範囲毎に前記検出
信号を個別に増幅して出力する増幅手段と、この増幅手
段で得られた複数の前記出力信号をデジタル信号に変換
するＡＤ変換器と、このＡＤ変換器で得られた前記デジ
タル信号を処理し、前記検出信号に応じた制御出力を発
生する演算回路とを備えたことを特徴とする。 本発明に
おいて、前記状態量が浴槽水位であることを特徴とす
る。 また、本発明において、前記検出範囲から分割され
た前記検出範囲の重複部分は、浴槽の水位検出部からそ
の浴槽の最高水位までの高さより大きく設定したことを
特徴とする。 According to the present invention, there is provided a detection range.
Detects the state quantity within
The detection means that generates the light and the detection range of the detection means
Division into multiple detection ranges with overlapping parts
A plurality of amplifiers are provided, and each amplifier is associated with the detection range.
A corresponding amplification range, and performing the detection for each amplification range.
Amplifying means for individually amplifying and outputting signals;
Converting the plurality of output signals obtained in the stage into digital signals
And an analog-to-digital converter obtained by the digital-to-analog converter.
Signal and output a control output corresponding to the detection signal.
And an arithmetic circuit for generating the data. In the present invention
Wherein the state quantity is a bathtub water level.
You. In the present invention, the detection range is divided from the detection range.
The overlapping part of the detection range is also
That the bathtub is set higher than the maximum water level
Features.
【０００６】[0006]
【作用】検出範囲を分割して、それぞれ別に出力を取り
出すようにし、ＡＤ変換を行って演算回路に導入し、信
号処理を行うようにする。すなわち、全体の検出範囲に
比較して狭い分割された検出範囲を、それぞれ信号処理
するようにしたので、見かけ上の分解能を上げて、検出
精度を高めることができる。The detection range is divided, the output is taken out separately, the A / D conversion is performed, the result is introduced into the arithmetic circuit, and the signal processing is performed. That is, since the signal processing is performed on each of the divided detection ranges narrower than the entire detection range, the apparent resolution can be increased and the detection accuracy can be increased.
【０００７】[0007]
【実施例】次に、本発明の状態量の検出信号処理装置を
適用した全自動給湯風呂装置の実施例について説明す
る。図１に全自動給湯風呂装置１を示す。この全自動給
湯風呂装置１は、給湯装置２から浴槽３に配管４ａ、４
ｂを介して注湯、並びに浴槽水の追焚循環を行う構成の
ものである。Next, a state quantity detection signal processing apparatus according to the present invention will be described.
An embodiment of the fully automatic hot water supply bath apparatus applied will be described.
You. FIG. 1 shows a fully automatic hot water supply bath apparatus 1. This fully automatic hot water supply bath apparatus 1 includes pipes 4 a, 4
It is configured to perform pouring of hot water and reheating circulation of bath water through b.
【０００８】前記給湯装置２は給湯器５と追焚熱交換器
６とホッパ７とを具備し、給湯器５から冷水、温水が配
管８を通り弁９を介してホッパ７に供給するようになっ
ており、ホッパ７から流路切換弁１０、循環ポンプ１
１、流路切換弁１２、追焚熱交換器６、配管４ａを介し
て浴槽に至るように構成されている。また、浴槽３から
温水が配管４ｂ、流路切換弁１０、循環ポンプ１１、流
路切換弁１２を介して追焚熱交換器６に至るように構成
されている。さらに、給湯装置２内の配管４ｂには、浴
槽水の水位を検知するための圧力センサ１３が設けられ
ている。そして、給湯装置２には、給湯装置２を構成す
る要素を操作制御するための給湯制御部１４が設けられ
る。The water heater 2 includes a water heater 5, a reheating heat exchanger 6, and a hopper 7, so that cold water and hot water can be supplied from the water heater 5 to the hopper 7 through a pipe 8 through a valve 9. From the hopper 7, the flow path switching valve 10, the circulation pump 1
1. It is configured to reach the bathtub via the flow path switching valve 12, the additional heat exchanger 6, and the pipe 4a. Further, the hot water is supplied from the bathtub 3 to the additional heat exchanger 6 via the pipe 4b, the flow path switching valve 10, the circulation pump 11, and the flow path switching valve 12. Further, a pressure sensor 13 for detecting a bathtub water level is provided in the pipe 4b in the hot water supply device 2. The hot water supply device 2 is provided with a hot water supply control unit 14 for operating and controlling elements constituting the hot water supply device 2.
【０００９】前記給湯制御部１４は、圧力センサ１３
他、他の検出手段による検出信号ｍを取り込む他、リモ
コン手段（図示せず）からの操作指令信号Ｖｃを取り込
んで信号処理して、操作制御信号Ｖｏを導出するもので
ある。すなわち、前記給湯制御部１４は、図２に示すよ
うに圧力センサ１３による検知信号（電圧信号）を取り
込んで信号増幅する第１、第２の増幅回路１５、１６を
有し、これら増幅信号をディジタル信号に変換して、演
算回路１７にて信号処理を行う構成である。また、前記
給湯制御部１４は、図３に示すように、第１、第２の増
幅回路１５、１６からの出力信号をアナログスイッチで
切り換えて一つのＡＤ変換器を用いて処理を行ってもよ
い。The hot water supply control unit 14 includes a pressure sensor 13
Besides, in addition to taking in a detection signal m by another detection means, it takes in an operation command signal Vc from a remote control means (not shown) and performs signal processing to derive an operation control signal Vo. That is, as shown in FIG. 2, the hot water supply control unit 14 has first and second amplifying circuits 15 and 16 that take in a detection signal (voltage signal) from the pressure sensor 13 and amplify the signal. The configuration is such that the signal is converted into a digital signal and the arithmetic circuit 17 performs signal processing. Also, as shown in FIG. 3, the hot water supply control unit 14 may switch the output signals from the first and second amplifying circuits 15 and 16 with analog switches and perform processing using one AD converter. Good.
【００１０】前記第１増幅回路１５は、図４に示すよう
に、反転増幅回路１８、１９を２段に接続構成し、また
第２増幅回路１６も、反転増幅回路２０、２１を２段に
接続構成している。第１増幅回路１５において、第１段
側の反転増幅回路１８は、オペアンプ２２と抵抗器
Ｒ1、Ｒ2によって構成され、第２段側の反転増幅回路１
９は、オペアンプ２３と抵抗器Ｒ3、Ｒ4によって構成さ
れる。前記第１段側の反転増幅回路１８の出力側を第２
段側の反転増幅回路１９の抵抗器Ｒ3に接続している。
また、これらオペアンプ２２、オペアンプ２３の＋入力
端子を、シフト回路２４を構成する可変抵抗器ＶＲ1を
介して接地している。また第２増幅回路１６において、
第１段側の反転増幅回路２０は、オペアンプ２５と抵抗
器Ｒ1、Ｒ2によって構成され、第２段側の反転増幅回路
２１は、オペアンプ２６と抵抗器Ｒ3、Ｒ4によって構成
される。また、これらオペアンプ２５、２６の＋入力端
子を、シフト回路２７を構成する可変抵抗器ＶＲ2を介
して接地している。As shown in FIG. 4, the first amplifying circuit 15 is configured by connecting inverting amplifying circuits 18 and 19 in two stages, and the second amplifying circuit 16 is also configured by connecting inverting amplifying circuits 20 and 21 in two stages. Connection configuration. In the first amplifier circuit 15, the first-stage inverting amplifier circuit 18 includes an operational amplifier 22 and resistors R 1 and R 2 , and the second-stage inverting amplifier circuit 1
9 comprises an operational amplifier 23 and resistors R 3 and R 4 . The output side of the first stage inverting amplifier circuit 18 is connected to the second side.
It is connected to the resistor R 3 of the inverting amplifier circuit 19 of the stage.
These operational amplifier 22, the positive input terminal of the operational amplifier 23 is grounded through a variable resistor VR 1 constituting the shift circuit 24. In the second amplifier circuit 16,
The first-stage inverting amplifier circuit 20 includes an operational amplifier 25 and resistors R 1 and R 2 , and the second-stage inverting amplifier circuit 21 includes an operational amplifier 26 and resistors R 3 and R 4 . . Further, these operational amplifiers 25, 26 + input terminal is grounded through a variable resistor VR 2 constituting the shift circuit 27.
【００１１】以上のような構成の第１、第２の増幅回路
１５、１６において、圧力センサ１３からの検知信号
（電圧信号）は、第１増幅回路１５の第１段側の反転増
幅回路１８におけるオペアンプ２２に抵抗器Ｒ1を介し
て印加されると共に、さらに、第２増幅回路１６の第１
段側の反転増幅回路２０におけるオペアンプ２５に、抵
抗器Ｒ1を介して印加されるようになっている。前記オ
ペアンプ２２、２３の＋入力端子の可変抵抗器ＶＲ
1と、オペアンプ２５、２６の＋入力端子の可変抵抗器
ＶＲ2の抵抗値を調整することによって、検出範囲にか
かる検知信号（電圧信号）を分割し、それぞれ、分割さ
れた検出範囲にかかる検知信号を増幅する構成である。
すなわち、第１増幅回路１５のオペアンプ２２のシフト
回路２４において、可変抵抗器ＶＲ1を調整して、＋入
力端子にかかる電圧が１Ｖ（水位−２ｍに対応する）と
し、第２増幅回路１６のオペアンプ２５のシフト回路２
７において、可変抵抗器ＶＲ2を調整して、＋入力端子
にかかる電圧が２．５Ｖ（水位＋１ｍ）となるように調
整している。In the first and second amplifier circuits 15 and 16 configured as described above, the detection signal (voltage signal) from the pressure sensor 13 is supplied to the inverting amplifier circuit 18 on the first stage side of the first amplifier circuit 15. Is applied via a resistor R 1 to the operational amplifier 22 at
The operational amplifier 25 at the inverting amplifier circuit 20 of the stage, and is applied via the resistor R 1. Variable resistor VR at the + input terminal of the operational amplifiers 22 and 23
1 and, by adjusting the resistance value of the variable resistor VR 2 of the + input terminal of operational amplifier 25 and 26, to divide a detection signal according to the detection range (voltage signal), respectively, according to the divided detection range detected This is a configuration for amplifying a signal.
That is, in the shift circuit 24 of the operational amplifier 22 of the first amplifier circuit 15, the variable resistor VR 1 is adjusted so that the voltage applied to the + input terminal is 1 V (corresponding to the water level −2 m). Shift circuit 2 of operational amplifier 25
In 7, by adjusting the variable resistor VR 2, the voltage applied to the positive input terminal is adjusted to be 2.5V (water + 1 m).
【００１２】次に、作用を説明する。全自動給湯風呂装
置１において、給湯装置２から浴槽３に配管４ａ、４ｂ
を介して浴槽３に設定水位まで注湯を行うと、給湯装置
２内の配管４ｂを介して浴槽水が圧力センサ１３まで導
入され、圧力センサ１３によって、浴槽水の圧力を検知
することができる。 Next, the operation will be described. In the fully automatic hot water supply bath apparatus 1, pipes 4a, 4b are connected from the hot water supply apparatus 2 to the bathtub 3.
When the water is poured into the bathtub 3 to the set water level via the heater, the bathtub water is introduced to the pressure sensor 13 through the pipe 4b in the hot water supply device 2, and the pressure sensor 13 can detect the pressure of the bathtub water. .
【００１３】給湯制御部１４において、圧力センサ１３
からの検知信号（電圧信号）１〜４Ｖが第１増幅回路１
５の第１段側の反転増幅回路１８における抵抗器Ｒ1を
介してオペアンプ２２に印加されると共に、第２増幅回
路１６の第１段側の反転増幅回路２０における抵抗器Ｒ
1を介してオペアンプ２３に印加される。ここで、第１
増幅回路１５のオペアンプ２２のシフト回路２４におい
て、可変抵抗器ＶＲ1を調整して＋入力端子にかかる電
圧が１Ｖ（水位−２ｍに対応する）とし、第２増幅回路
１６のオペアンプ２５のシフト回路２７において、可変
抵抗器ＶＲ2を調整して＋入力端子にかかる電圧が２．
５Ｖ（水位＋１ｍ）となるように調整すると、検知信号
（電圧信号）が２．５Ｖで第１増幅回路１５は飽和（出
力５Ｖ）し、第２増幅回路１６は検知信号２．５Ｖで出
力が０Ｖで、検知信号４Ｖで飽和（出力５Ｖ）する。こ
れによって検出範囲（−２ｍ〜＋４ｍ）にかかる検知信
号（１〜４Ｖ）から、それぞれ検出範囲（−２ｍ〜＋１
ｍ）にかかる検知信号（１〜２．５Ｖ）を第１増幅回路
１５にて、検出範囲（＋１ｍ〜＋４ｍ）にかかる検知信
号（２．５Ｖ〜４Ｖ）を第２増幅回路１６においてそれ
ぞれ出力を取りだすことができるのである。このように
して圧力センサ１３からの検知信号は、検出範囲（−２
ｍ〜＋４ｍ）と検出範囲（＋１ｍ〜＋４ｍ）とに分割し
て出力を取り出すことができ、それぞれ、ディジタル信
号に変換して、演算回路１７にて信号処理が実行され
る。In hot water supply control unit 14, pressure sensor 13
Signal (voltage signal) of 1 to 4 V from the first amplifier circuit 1
5 is applied to the operational amplifier 22 via the resistor R 1 in the first-stage inverting amplifier circuit 18 and the resistor R in the first-stage inverting amplifier circuit 20 of the second amplifier circuit 16.
The signal is applied to the operational amplifier 23 via 1 . Here, the first
In the shift circuit 24 of the operational amplifier 22 of the amplifier circuit 15, the voltage applied to the + input terminal is adjusted to 1 V (corresponding to a water level of −2 m) by adjusting the variable resistor VR1, and the shift circuit of the operational amplifier 25 of the second amplifier circuit 16 is adjusted. in 27, the voltage applied to adjust the variable resistor VR 2 and + input terminal 2.
When the voltage is adjusted to 5 V (water level +1 m), the detection signal (voltage signal) is 2.5 V, the first amplifier circuit 15 is saturated (output 5 V), and the second amplifier circuit 16 is output with the detection signal 2.5 V. At 0V, the detection signal is saturated with 4V (output 5V). As a result, from the detection signals (1 to 4 V) applied to the detection range (−2 m to +4 m), the detection range (−2 m to +1) is obtained.
m) is output in the first amplifier circuit 15 and the detection signal (2.5 V to 4 V) in the detection range (+1 m to +4 m) is output in the second amplifier circuit 16. You can take it out. In this manner, the detection signal from the pressure sensor 13 is in the detection range (−2
m to +4 m) and a detection range (+1 m to +4 m), and outputs can be taken out. Each of the outputs is converted into a digital signal, and the arithmetic circuit 17 executes signal processing.
【００１４】ここで、第１、第２増幅回路１５、１６の
入出力特性を図５に示し、説明する。第１増幅回路１５
により増幅される検出範囲（−２ｍ〜＋１ｍ）にかかる
検知信号（１〜２．５Ｖ）、第２増幅回路１６により増
幅される検出範囲（＋１ｍ〜＋４ｍ）にかかる検知信号
（２．５Ｖ〜４Ｖ）において分解能は、 ３０００（ｍｍ）／２8≒１１．７２（ｍｍ） ということになり、実用上要求される±２０（ｍｍ）か
らすると、分解能、精度が向上したことがわかる。Here, the input / output characteristics of the first and second amplifier circuits 15 and 16 will be described with reference to FIG. First amplifier circuit 15
And a detection signal (2.5 V to 4 V) applied to the detection range (+1 m to +4 m) amplified by the second amplifier circuit 16. In ()), the resolution is 3000 (mm) / 2 8 ≒ 11.72 (mm). From ± 20 (mm) required for practical use, it can be seen that the resolution and accuracy have been improved.
【００１５】次に、本発明の状態量の検出信号処理装置
は、以下に記載するように検出範囲を分割処理すること
もできる。なお、本実施例においても、信号処理装置
は、前述の実施例と同構成であるので、ここでは構成の
説明は省略する。本実施例においても、全体の検出範囲
を分割して処理を行うのであるが、図６に示すように、
全体の検出範囲の中から、実際に必要な検出範囲を特性
が重複するように構成して分割処理を行うようにしてい
る。図中におけるｈ２ は、図７、図８に示す装置にお
いて、検出口から浴槽Ｂに設定した最大水位ｈ１ より
大きくなるように範囲を設定したものである。Next, the state quantity detection signal processing apparatus according to the present invention can divide the detection range as described below. In this embodiment, the signal processing device has the same configuration as that of the above-described embodiment, and a description of the configuration will be omitted. Also in the present embodiment, the processing is performed by dividing the entire detection range, but as shown in FIG.
Of the entire detection range, the actually necessary detection range is configured so as to have overlapping characteristics, and the division processing is performed. H2 in the figure is a range that is set to be higher than the maximum water level h1 set in the bathtub B from the detection port in the apparatus shown in FIGS.
【００１６】ここでかかる分割処理の具体例を挙げ説明
する。前述の最大水位ｈ1を例えば５５ｃｍとすると、
図６中におけるｈ2は６０ｃｍと設定する。そして、全
体の高さ（−２ｍ〜＋４ｍ）の範囲の中間の＋１ｍを中
心として、ここより±３０ｃｍがｈ2の範囲として設定
する。第１増幅回路１５において、抵抗器ＶＲ1が１Ｖ
になるように調整し、第１増幅回路１５の出力特性が＋
１．３ｍの点（２．６５Ｖ）で飽和するようにＲ4を調
整する。一方、第２増幅回路１６では、可変抵抗器ＶＲ
2を＋０．７ｍの点（入力電圧２．３５Ｖ）に調整し、
第２増幅回路１６の出力特性が＋４ｍの点（４Ｖ）で飽
和するようにＲ4を調整する。Here, a specific example of such division processing will be described. When the maximum water level h 1 of the foregoing example 55cm,
H 2 is set to 60cm in the FIG. The center is set at +1 m in the middle of the range of the entire height (−2 m to +4 m), and ± 30 cm is set as the range of h 2 from here. In the first amplifying circuit 15, resistor VR 1 is 1V
So that the output characteristic of the first amplifier circuit 15 is +
Adjust R 4 to saturate at the 1.3 m point (2.65 V). On the other hand, in the second amplifier circuit 16, the variable resistor VR
2 is adjusted to a point of +0.7 m (input voltage 2.35 V),
R 4 is adjusted so that the output characteristic of the second amplifier circuit 16 is saturated at the point of +4 m (4 V).
【００１７】浴槽Ｂの水位検出口の水位が第１、第２増
幅回路１５、１６の重複部より下側に外れたａ点である
ときには、浴槽Ｂに設定した最高水位ｂ点までの間隔が
重複部中に包含されるため、第１増幅回路で増幅してＡ
Ｄ変換器に信号を送り、ｂ−ａの水位を検出する。ま
た、浴槽Ｂの水位検出口の水位が第１、第２増幅回路１
５、１６の重複部中にあるｃ点であるときには、浴槽Ｂ
に設定した最高水位ｄ点までの間隔が重複部中を逸脱す
るため、第２増幅回路１６で増幅してＡＤ変換器に信号
を送り、ｄ−ｃの水位を検出するものである。When the water level at the water level detecting port of the bathtub B is a point a below the overlapping portion of the first and second amplifier circuits 15 and 16, the interval between the water level and the maximum water level b set in the bathtub B is Amplified by the first amplifier circuit and included in A
A signal is sent to the D converter to detect the water level of ba. The water level of the water level detection port of the bathtub B is equal to the first and second amplifier circuits 1.
When it is point c in the overlapping portion of 5 and 16, the bathtub B
Since the interval up to the highest water level d set in the above-mentioned range deviates in the overlapping portion, the signal is amplified by the second amplifier circuit 16 and sent to the AD converter to detect the dc water level.
【００１８】以上のように信号を分割処理するようにす
れば、重複部ｈ2の範囲を浴槽Ｂの水位検出口の位置か
ら浴槽Ｂに設定した最高水位までの高さｈ1より大きく
設定することにより、信号検出を第１増幅回路１５と、
第２増幅回路１６にそれぞれ依存させることができ、測
定効率が良好となる。[0018] If to divide process the signals as described above, sets the range of the overlap portion h 2 larger than the height h 1 from the position of the water level detecting port of the tub B to high water set in bath B Thereby, the signal detection is performed by the first amplifier circuit 15,
The measurement can be made dependent on the second amplifying circuit 16, and the measurement efficiency is improved.
【００１９】ところで、オペアンプは、動作中の周囲温
度の変化や、抵抗器の発熱によって温度ドリフトが発生
し、第１増幅回路１５と、第２増幅回路１６の出力特性
は変動して図６の特性の傾きが変化するが、増幅はリニ
アに行っているから、ａ点、ｂ点の位置関係は変わりが
なく、温度補償回路を特別に設けなくても良好に水位を
検出することができる。In the operational amplifier, a temperature drift occurs due to a change in ambient temperature during operation or heat generated by a resistor, and output characteristics of the first amplifier circuit 15 and the second amplifier circuit 16 fluctuate. Although the slope of the characteristic changes, the amplification is performed linearly, so that the positional relationship between the points a and b does not change, and the water level can be detected satisfactorily without specially providing a temperature compensation circuit.
【００２０】以上、本発明について実施例を挙げて説明
したが、いずれにしても検出範囲を分割して、それぞれ
別に出力を取り出すようにし、ＡＤ変換を行って演算回
路に導入し、信号処理を行うようにしたので、分解能を
小さくすることができ、高分解能のＡＤ変換器を使用し
なくても検出精度を高めることができる。なお、前記し
た実施例においては、検出範囲を二つに分けた実例を挙
げ、説明したが、必要に応じて三つ、四つに分割し信号
処理を行うことができる。In the above, the present invention has been described with reference to the embodiments. In any case, the detection range is divided, the output is separately taken out, the AD conversion is performed, the result is introduced into the arithmetic circuit, and the signal processing is performed. Since this is performed, the resolution can be reduced, and the detection accuracy can be increased without using a high-resolution AD converter. In the above-described embodiment, an example in which the detection range is divided into two has been described. However, signal processing can be performed by dividing the detection range into three or four as necessary.
【００２１】[0021]
【発明の効果】以上の通り、本発明によれば、検出範囲
を分割して、それぞれ別に出力を取り出すようにし、Ａ
Ｄ変換を行って演算回路に導入し、信号処理を行うよう
にするようにしたので、見かけ上の分解能を上げること
ができ、高分解能のＡＤ変換器を使用しなくても検出精
度を高めることができるので、コストアップを抑えるこ
とができ、汎用性が高く、様々な分野において適用する
ことができる。また、全体の検出範囲に対して、一部を
重複するように分解すると、回路の温度補償は不要とな
り、調整が簡単で良好に信号処理を行うことができる。
従って、本発明にかかる信号処理装置を全自動給湯風呂
装置に適用すると、給湯器と浴槽の設置位置関係に左右
されることなく、精度の高い水位検出が可能なので、水
位の調整を良好に行うことができる。As described above, according to the present invention, the detection range is divided and outputs are respectively taken out separately.
D-conversion is introduced into the arithmetic circuit to perform signal processing, so that the apparent resolution can be increased and the detection accuracy can be increased without using a high-resolution AD converter. Therefore, cost increase can be suppressed, versatility is high, and it can be applied in various fields. Further, if the entire detection range is decomposed so as to partially overlap, the temperature compensation of the circuit becomes unnecessary, and the adjustment is simple and the signal processing can be performed well.
Therefore, when the signal processing device according to the present invention is applied to a fully automatic hot water supply bath device, the water level can be detected with high accuracy without being affected by the positional relationship between the water heater and the bathtub, and the water level can be adjusted well. be able to.
【００２２】[0022]
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の状態量の検出信号処理装置を適用した
全自動給湯風呂装置を示す系統図である。FIG. 1 shows a state signal detection signal processing apparatus according to the present invention.
It is a system diagram which shows a fully automatic hot-water supply bath apparatus .
【図２】本発明の状態量の検出信号処理装置の一例を示
すブロック図である。FIG. 2 shows an example of a state quantity detection signal processing apparatus according to the present invention.
It is to block diagram.
【図３】本発明の状態量の検出信号処理装置の他の例を
示すブロック図である。FIG. 3 shows another example of the state quantity detection signal processing apparatus of the present invention.
It is a block diagram showing.
【図４】図２に示す信号処理装置において、検出信号を
所定範囲に分割すると共に、増幅する信号増幅回路の一
例を示す図である。FIG. 4 is a diagram illustrating an example of a signal amplification circuit that divides a detection signal into a predetermined range and amplifies the detection signal in the signal processing device illustrated in FIG. 2;
【図５】図４に示した信号増幅回路の検出信号と出力信
号の関係を示す特性グラフである。FIG. 5 is a characteristic graph showing a relationship between a detection signal and an output signal of the signal amplification circuit shown in FIG.
【図６】図４に示した信号増幅回路の検出信号と出力信
号の関係を示す特性グラフである。FIG. 6 is a characteristic graph showing a relationship between a detection signal and an output signal of the signal amplification circuit shown in FIG.
【図７】浴槽と給湯器の配置関係の一例を示す説明図で
ある。FIG. 7 is an explanatory diagram showing an example of an arrangement relationship between a bathtub and a water heater.
【図８】浴槽と給湯器の配置関係のもう一つの例を示す
説明図である。FIG. 8 is an explanatory diagram showing another example of an arrangement relationship between a bathtub and a water heater.
【図９】水位検出の信号処理のためのブロック説明図で
ある。FIG. 9 is an explanatory block diagram for signal processing of water level detection.
１ 全自動給湯風呂装置 ２ 給湯装置 ３ 浴槽 ４ａ、４ｂ 配管 ５ 給湯器 ６ 追焚熱交換器 ７ ホッパ ８ 配管 ９ 弁 １０ 流路切換弁 １１ 循環ポンプ １２ 流路切換弁 １３ 圧力センサ １４ 給湯制御部 １５ 第１増幅回路 １６ 第２増幅回路 １７ 演算回路 １８、１９、２０、２１ 反転増幅回路 ２２、２３、２５、２６ オペアンプ ２４、２７ シフト回路 DESCRIPTION OF SYMBOLS 1 Fully automatic hot water supply bath apparatus 2 Hot water supply apparatus 3 Bathtub 4a, 4b Pipe 5 Hot water supply 6 Additional heating heat exchanger 7 Hopper 8 Pipe 9 Valve 10 Flow path switching valve 11 Circulation pump 12 Flow path switching valve 13 Pressure sensor 14 Hot water supply control part 15 First amplifier circuit 16 Second amplifier circuit 17 Operation circuit 18, 19, 20, 21 Inverting amplifier circuit 22, 23, 25, 26 Operational amplifier 24, 27 Shift circuit
Claims (3)
その状態量を表す検出信号を発生する検出手段と、 この検出手段の前記検出範囲を一部に重複部分を持たせ
て複数の検出範囲に分割するとともに複数の増幅器を設
け、各増幅器に前記検出範囲と対応する増幅範囲を割り
当て、前記増幅範囲毎に前記検出信号を個別に増幅して
出力する増幅手段と、 この増幅手段で得られた複数の前記出力信号をデジタル
信号に変換するＡＤ変換器と、 このＡＤ変換器で得られた前記デジタル信号を処理し、
前記検出信号に応じた制御出力を発生する演算回路と、 を備えたことを特徴とする状態量の検出信号処理装置。1. A state quantity within a certain detection range is detected,
Detecting means for generating a detection signal representing the state quantity; dividing the detection range of the detection means into a plurality of detection ranges by partially overlapping the plurality of detection ranges; Amplifying means for allocating an amplification range corresponding to a range, individually amplifying and outputting the detection signal for each amplification range, and an AD converter for converting a plurality of the output signals obtained by the amplification means into digital signals And processing the digital signal obtained by the AD converter.
An operation circuit for generating a control output according to the detection signal; and a state quantity detection signal processing device.
とする信号処理装置。2. The signal processing device according to claim 1, wherein the state quantity is a bathtub water level.
囲の重複部分は、浴槽の水位検出部からその浴槽の最高
水位までの高さより大きく設定したことを特徴とする請
求項１又は２記載の状態量の検出信号処理装置。3. An overlapping portion of the detection range divided from the detection range is set to be larger than a height from a water level detection section of the bathtub to a maximum water level of the bathtub. State quantity detection signal processing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09977493A JP3259792B2 (en) | 1993-04-26 | 1993-04-26 | State quantity detection signal processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09977493A JP3259792B2 (en) | 1993-04-26 | 1993-04-26 | State quantity detection signal processor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001329563A Division JP3640914B2 (en) | 2001-10-26 | 2001-10-26 | Automatic hot water bath equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06307911A JPH06307911A (en) | 1994-11-04 |
| JP3259792B2 true JP3259792B2 (en) | 2002-02-25 |
Family
ID=14256312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09977493A Expired - Lifetime JP3259792B2 (en) | 1993-04-26 | 1993-04-26 | State quantity detection signal processor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3259792B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5428876B2 (en) * | 2010-01-12 | 2014-02-26 | 三菱電機株式会社 | Water heater |
| CN105915186B (en) * | 2016-04-11 | 2023-03-24 | 延锋伟世通汽车电子有限公司 | Audio detection control and diagnostic circuit |
-
1993
- 1993-04-26 JP JP09977493A patent/JP3259792B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06307911A (en) | 1994-11-04 |
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