JPS63179597U - - Google Patents
Info
- Publication number
- JPS63179597U JPS63179597U JP7213487U JP7213487U JPS63179597U JP S63179597 U JPS63179597 U JP S63179597U JP 7213487 U JP7213487 U JP 7213487U JP 7213487 U JP7213487 U JP 7213487U JP S63179597 U JPS63179597 U JP S63179597U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- alarm
- voltage
- sensor
- 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.)
- Pending
Links
- 206010021143 Hypoxia Diseases 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 229910002076 stabilized zirconia Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Emergency Alarm Devices (AREA)
Description
第1図は本考案の一実施例による酸欠警報器の
回路図、第2図は同酸素センサーの構造図、第3
図は同センサーの電気的特性図、第4図は同セン
サーの温度依存特性図、第5図は同センサーのヒ
ーターの電圧増加時の出力電圧特性図、第6図は
従来の同回路例を各示す。
11……酸素センサー、25……制御手段、2
6……切換手段、A……ヒーター電圧制御回路、
B……変換回路、D……比較回路、E……警報回
路。
Fig. 1 is a circuit diagram of an oxygen deficiency alarm according to an embodiment of the present invention, Fig. 2 is a structural diagram of the same oxygen sensor, and Fig. 3 is a circuit diagram of an oxygen deficiency alarm according to an embodiment of the present invention.
Figure 4 shows the electrical characteristics of the same sensor, Figure 4 shows the temperature dependence characteristics of the sensor, Figure 5 shows the output voltage characteristics when the heater voltage increases, and Figure 6 shows a conventional example of the same circuit. Each shown. 11... Oxygen sensor, 25... Control means, 2
6...Switching means, A...Heater voltage control circuit,
B... Conversion circuit, D... Comparison circuit, E... Alarm circuit.
Claims (1)
を利用した酸素センサー11と、前記センサー1
1のヒーターに電圧を印加するヒーター電圧制御
回路Aと、ヒーター電圧を2段に切り換える切換
手段26と、前記センサー11に一定の監視電圧
を印加し、前記センサー11中を流れる電流を電
圧に変換する変換回路Bと、変換回路B出力を比
較する比較回路Dと、酸欠警報器が異常なるとき
警報を発する警報回路Eと、制御手段25とを有
し、制御手段25入力としては前記比較回路D出
力を、出力としては、切換手段26と警報回路E
を各接続し、制御手段25には一定周期T1毎に
一定周期T1より短時間T2、切換手段26によ
りヒーター電圧を増加せしめ、時間T2経過完了
時、比較回路D出力が変換回路B出力増加を発生
していないとき、警報回路Eを駆動する機能を具
備させたことを特徴とする酸欠警報器。 An oxygen sensor 11 that utilizes the pumping action of heated stabilized zirconia, and the sensor 1
a heater voltage control circuit A that applies a voltage to the heater 1; a switching means 26 that switches the heater voltage in two stages; and a constant monitoring voltage that is applied to the sensor 11 and converts the current flowing through the sensor 11 into a voltage. It has a conversion circuit B that compares the output of the conversion circuit B, a comparison circuit D that compares the output of the conversion circuit B, an alarm circuit E that issues an alarm when the oxygen deficiency alarm becomes abnormal, and a control means 25, and the input of the control means 25 is the comparison circuit D. The circuit D output is output from the switching means 26 and the alarm circuit E.
are connected to each other, and the control means 25 is made to increase the heater voltage by the switching means 26 for a short time T2 from the fixed period T1 every fixed period T1, and when the time T2 has elapsed, the comparison circuit D output causes the conversion circuit B output to increase. An oxygen deficiency alarm device characterized by having a function of driving an alarm circuit E when an oxygen deficiency is not occurring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7213487U JPS63179597U (en) | 1987-05-14 | 1987-05-14 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7213487U JPS63179597U (en) | 1987-05-14 | 1987-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63179597U true JPS63179597U (en) | 1988-11-21 |
Family
ID=30915319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7213487U Pending JPS63179597U (en) | 1987-05-14 | 1987-05-14 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63179597U (en) |
-
1987
- 1987-05-14 JP JP7213487U patent/JPS63179597U/ja active Pending