JPH0187499U - - Google Patents
Info
- Publication number
- JPH0187499U JPH0187499U JP18349287U JP18349287U JPH0187499U JP H0187499 U JPH0187499 U JP H0187499U JP 18349287 U JP18349287 U JP 18349287U JP 18349287 U JP18349287 U JP 18349287U JP H0187499 U JPH0187499 U JP H0187499U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- switch
- comparator
- power supply
- magnetic 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 9
- 239000000696 magnetic material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000009499 grossing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Description
第１図は本考案の要部の電気回路図、第２図は
本考案の出力信号域を示す説明図、第３図は本考
案に係わる電圧レベル検出装置の電気回路図、第
４図は従来例を示す要部電気回路図である。
１……回転検出装置、Ａ……回転検出センサ、
Ｂ……電圧レベル検出装置、２……ホールＩＣ、
３……定電圧回路、４……平滑回路、５……半導
体スイツチ、８……第１比較器、９……第２比較
器、１０……第３比較器、ＺＤ……ツエナーダイ
オード、Ｄ……ダイオード、Ｒ１……分圧抵抗、
Ｒ２……分圧抵抗、Ｒ３……分圧抵抗、Ｒ４……
検出抵抗、Ｒ５，Ｒ６，Ｒ７，Ｒ８……分圧抵抗
、Ｖ……直流電源。
Figure 1 is an electric circuit diagram of the main part of the present invention, Figure 2 is an explanatory diagram showing the output signal range of the present invention, Figure 3 is an electric circuit diagram of the voltage level detection device according to the present invention, and Figure 4 is an electric circuit diagram of the voltage level detection device according to the present invention. FIG. 2 is a main part electric circuit diagram showing a conventional example. 1... Rotation detection device, A... Rotation detection sensor,
B... Voltage level detection device, 2... Hall IC,
3... Constant voltage circuit, 4... Smoothing circuit, 5... Semiconductor switch, 8... First comparator, 9... Second comparator, 10... Third comparator, ZD... Zener diode, D ... Diode, R1 ... Voltage dividing resistor,
R2...Voltage dividing resistor, R3... Voltage dividing resistor, R4...
Detection resistor, R5, R6, R7, R8...Voltage dividing resistor, V...DC power supply.
Claims (1)
線式磁気センサの電源端子とアース端子との両端
子間に磁気センサの駆動電圧を供給する定電圧回
路を接続するとともに、前記磁気センサの電源端
子に少なくとも２個の分圧抵抗を直列に接続し、
直流電源側に位置する分圧抵抗に隣接する分圧抵
抗と並列に前記磁気センサの出力信号により作動
するスイツチを接続し、このスイツチの一端を出
力端とする一方、 前記スイツチの一端と前記磁気センサのアース
端子との間に前記分圧抵抗に比べて大きな抵抗値
を有する検出抵抗を接続してスイツチの一端にあ
らわれる出力電圧を検出するように構成し、この
出力電圧が入力信号となるように前記スイツチの
一端にそれぞれ第１比較器、第２比較器、第３比
較器を接続し、少なくとも第１比較器および第２
比較器の基準電圧を前記直流電源の電源電圧の分
圧により得られる電圧とするとともに、 第１比較器の基準電圧を前記スイツチがオンの
時にその一端にあらわれる電圧とスイツチがオフ
の時にその一端にあらわれる電圧との中間の電圧
とし、 前記第２比較器の基準電圧を電源電圧とスイツ
チがオフの時にその一端にあらわれる電圧の中間
の電圧とし、 前記第３比較器の基準電圧をスイツチがオンの
時にその一端にあらわれる電圧とＯボルトとの中
間の電圧としたことを特徴とする回転検出装置。[Claims for Utility Model Registration] Detecting passage of magnetic material embedded in a rotating body 3
A constant voltage circuit that supplies a driving voltage for the magnetic sensor is connected between the power terminal and the ground terminal of the wire magnetic sensor, and at least two voltage dividing resistors are connected in series to the power terminal of the magnetic sensor. death,
A switch operated by the output signal of the magnetic sensor is connected in parallel with the voltage dividing resistor adjacent to the voltage dividing resistor located on the DC power supply side, and one end of the switch is set as the output end, while one end of the switch is connected to the magnetic sensor. A detection resistor having a resistance value larger than the voltage dividing resistor is connected between the ground terminal of the sensor and the output voltage appearing at one end of the switch is detected, and this output voltage is used as an input signal. A first comparator, a second comparator, and a third comparator are connected to one end of the switch, respectively, and at least the first comparator and the second comparator are connected to one end of the switch.
The reference voltage of the comparator is the voltage obtained by dividing the power supply voltage of the DC power supply, and the reference voltage of the first comparator is the voltage that appears at one end when the switch is on, and the voltage that appears at one end when the switch is off. The reference voltage of the second comparator is set to a voltage between the power supply voltage and the voltage appearing at one end when the switch is off, and the reference voltage of the third comparator is set to a voltage that is midway between the power supply voltage and the voltage that appears at one end when the switch is off. A rotation detection device characterized in that the voltage is intermediate between the voltage appearing at one end of the rotation detection device and O volts when .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18349287U JPH0624959Y2 (en) | 1987-11-30 | 1987-11-30 | Rotation detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18349287U JPH0624959Y2 (en) | 1987-11-30 | 1987-11-30 | Rotation detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0187499U true JPH0187499U (en) | 1989-06-09 |
| JPH0624959Y2 JPH0624959Y2 (en) | 1994-06-29 |
Family
ID=31474912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18349287U Expired - Lifetime JPH0624959Y2 (en) | 1987-11-30 | 1987-11-30 | Rotation detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624959Y2 (en) |
-
1987
- 1987-11-30 JP JP18349287U patent/JPH0624959Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0624959Y2 (en) | 1994-06-29 |