CN2196311Y - Check unit for household watt-hour meter - Google Patents
Check unit for household watt-hour meter Download PDFInfo
- Publication number
- CN2196311Y CN2196311Y CN 93247164 CN93247164U CN2196311Y CN 2196311 Y CN2196311 Y CN 2196311Y CN 93247164 CN93247164 CN 93247164 CN 93247164 U CN93247164 U CN 93247164U CN 2196311 Y CN2196311 Y CN 2196311Y
- Authority
- CN
- China
- Prior art keywords
- watt
- hour meter
- detector
- utility
- model
- 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 - Fee Related
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model relates to a detector for household watt-hour meters, which is composed of a detector body, a standard load, and a power supply, wherein, the detector body comprises an A/D converter, a calculator, a storage device, a display device, a keyboard, etc. When the detector is used, a detector head is clamped on an watt-hour meter to be measured for on-line detection on site. The utility model has the advantages of small size, light weight, low cost, powerful function, convenient carryover, convenient operation, accurate detection, etc., and is suitable for electric utility departments (especially villages, and medium and small cities).
Description
The utility model relates to a kind of mini domestic watt-hour meter detecting device, partly is made up of infrared electro detection head, detecting device body, standard termination three.Be applicable to the on-the-spot online detection of general family expenses watt-hour meter.
At present, general watt-hour meter detection method is the stopwatch method, and promptly hand card stopwatch is watched watt-hour meter dial, measures the watt-hour meter actual speed, calculates nominal speed according to actual loading power (bulb wattage) again, and both differences are promptly thought the watt-hour meter error.This method is too coarse, and especially when voltage fluctuation was big, accuracy was lower.Another way is exactly to unload watt-hour meter to send special measuring station, under lab detects, but time-consuming, effort, expensive, performance difficulty especially in vast rural area and small and medium-sized cities, may be accomplished hardly.
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of family expenses watt-hour meter detecting device of being convenient to online detection is provided.
Solution of the present utility model is such, and the family expenses watt-hour meter detecting device that is provided is made up of infrared electro detection head, detecting device body, standard termination three parts, and the detecting device body comprises parts such as A/D conversion, computing, storage, Display And Keyboard.During use detection head is installed in tested electric degree surface, and makes detection head aim at rotating disk, carry out on-the-spot online detection.Adopt infrared emission reception technique and photoelectric conversion technique, utilize the strong and weak difference of disk edge reflection, produce the electric pulse signal, and the work that utilizes this pulse signal to remove gating pulse counter (timer), thereby can accurately measure real-time rotating speed; According to the realtime power and the disc constant of fixed standard load, can calculate nominal speed on the other hand; Be the watt-hour meter error between the two.
The utility model is compared with prior art:
1. be skillfully constructed modern design
2. small and exquisite, be easy to carry
3. cheap, easy to use
4. detect accurately.
Below in conjunction with accompanying drawing the utility model is further described
Accompanying drawing 1 is the utility model structural representation
Accompanying drawing 2 detects and storage part schematic circuit for the utility model
Accompanying drawing 3 is the utility model Display And Keyboard part schematic circuit
Among the figure:
The tested watt-hour meter 2--of 1--infrared electro detection head
The tested table rotating disk of 3--4--detection head cable
5--detection head rod mouth 6--gives and puts knob
7--pilot lamp 8--starts knob
9--display window 10--input operation key
11--external power supply mouth
In Fig. 1, family expenses watt-hour meter provided by the utility model is made up of infrared electro detection head, detecting device body, standard termination, and the detecting device body comprises parts such as A/D conversion, computing, storage, Display And Keyboard.During use detection head is installed on the tested watt-hour meter (1), and makes detection head aim at rotating disk, carry out on-the-spot online detection.Adopt infrared emission reception technique and photoelectric conversion technique, utilize the difference of tested table rotating disk (3) edge reflections power, the output of generation pulse signal, and the work that utilizes this pulse signal to remove gating pulse counter (timer), thus can accurately measure real-time rotating speed; In addition, realtime power and disc constant according to the fixed standard load can calculate nominal speed, and both differences are the watt-hour meter error.
In Fig. 2, watt-hour meter actual speed signal is detected by the infrared electro detection head, sends into computing machine (single-chip microcomputer 80C31), and actual ac voltage signal is converted to d. c. voltage signal by AD736, sends into computing machine after the A/D conversion.
Fig. 3 is a Display And Keyboard part schematic circuit.
In Fig. 3, disc constant (commentaries on classics/kilowatt hour) and actual loading resistance are imported computing machine by keyboard, and computing machine can calculate nominal (hope) rotating speed, actual speed after having obtained these data, the difference of nominal speed and actual speed, and corresponding percentage error.
All need data presented to export by computing machine, and are come out by liquid crystal display displays.
Claims (1)
1, a kind of family expenses watt-hour meter detecting device, by infrared electro detection head (2), the detecting device body, standard termination three parts are formed, it is characterized in that the detecting device body comprises A/D conversion, computing, storage, Display And Keyboard five parts, detection head (2) is installed on the tested watt-hour meter (1), aims at tested table rotating disk (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247164 CN2196311Y (en) | 1993-12-08 | 1993-12-08 | Check unit for household watt-hour meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247164 CN2196311Y (en) | 1993-12-08 | 1993-12-08 | Check unit for household watt-hour meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2196311Y true CN2196311Y (en) | 1995-05-03 |
Family
ID=33819631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93247164 Expired - Fee Related CN2196311Y (en) | 1993-12-08 | 1993-12-08 | Check unit for household watt-hour meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2196311Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759368A (en) * | 2011-04-25 | 2012-10-31 | 上海市计量测试技术研究院 | Photoconductive tube photoelectric conversion pulse counting timer |
-
1993
- 1993-12-08 CN CN 93247164 patent/CN2196311Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759368A (en) * | 2011-04-25 | 2012-10-31 | 上海市计量测试技术研究院 | Photoconductive tube photoelectric conversion pulse counting timer |
| CN102759368B (en) * | 2011-04-25 | 2014-11-26 | 上海市计量测试技术研究院 | Photoconductive tube photoelectric conversion pulse counting timer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |