JPS5796267A - Percent level detection circuit - Google Patents
Percent level detection circuitInfo
- Publication number
- JPS5796267A JPS5796267A JP55172003A JP17200380A JPS5796267A JP S5796267 A JPS5796267 A JP S5796267A JP 55172003 A JP55172003 A JP 55172003A JP 17200380 A JP17200380 A JP 17200380A JP S5796267 A JPS5796267 A JP S5796267A
- Authority
- JP
- Japan
- Prior art keywords
- percent level
- level
- time
- delivered
- electric field
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
- Measurement Of Current Or Voltage (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
PURPOSE:To make it possible to measure the desired percent level of received electric field in running section without being affected by runnig speed, through detecting the desired percent level through a digital signal processing. CONSTITUTION:A digital type time ratio measuring circuit 10 produces data which is proportional to the time length in which the level of the received electric field derived from the input terminal is below a pre-estimated percent level p within a measuring time breadth T seconds. This data is compared by a comparator 13 with a time ratio percent p, and the result of the comparison is delivered to a logical circuit 16. Upon receipt of the control signal from the logical circuit 16, an up and down counter 18 counts up or down the clock pulses supplied through the terminal 19 at each time the vehicle runs 1 meter. The count output from the counter 18 is delivered through an A/D converter 20 as an estimated percent level p. Accordingly, it is possible to detect any desired percent level of the signal which varies at random.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55172003A JPS5796267A (en) | 1980-12-08 | 1980-12-08 | Percent level detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55172003A JPS5796267A (en) | 1980-12-08 | 1980-12-08 | Percent level detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5796267A true JPS5796267A (en) | 1982-06-15 |
| JPH0213271B2 JPH0213271B2 (en) | 1990-04-03 |
Family
ID=15933709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55172003A Granted JPS5796267A (en) | 1980-12-08 | 1980-12-08 | Percent level detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5796267A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6052136A (en) * | 1983-09-01 | 1985-03-25 | Nippon Telegr & Teleph Corp <Ntt> | Detecting and discriminating circuit of reception level |
| JP2007251621A (en) * | 2006-03-16 | 2007-09-27 | Nippon Hoso Kyokai <Nhk> | Indication device and indication program |
-
1980
- 1980-12-08 JP JP55172003A patent/JPS5796267A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6052136A (en) * | 1983-09-01 | 1985-03-25 | Nippon Telegr & Teleph Corp <Ntt> | Detecting and discriminating circuit of reception level |
| JP2007251621A (en) * | 2006-03-16 | 2007-09-27 | Nippon Hoso Kyokai <Nhk> | Indication device and indication program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0213271B2 (en) | 1990-04-03 |
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