CN201740865U - Temperature drift sieving device of an electric energy measurement chip - Google Patents
Temperature drift sieving device of an electric energy measurement chip Download PDFInfo
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- CN201740865U CN201740865U CN2010205017561U CN201020501756U CN201740865U CN 201740865 U CN201740865 U CN 201740865U CN 2010205017561 U CN2010205017561 U CN 2010205017561U CN 201020501756 U CN201020501756 U CN 201020501756U CN 201740865 U CN201740865 U CN 201740865U
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Abstract
The utility model discloses a temperature drift sieving device of an electric energy measurement chip, comprising an electric energy measurement chip slot, an electric energy measurement module, a single-chip microprocessor and a power module for supplying the power for each part. The device also comprises a display circuit for displaying various electric quantity values calculated by the single-chip microprocessor and error report, a key-stroke circuit for inputting the control command for the single-chip microprocessor and a storage device for storing the data. The temperature drift sieving device of the electric energy measurement chip performs the temperature sieve of many electric energy measurement chips and sieves the chip with temperature drift according with in the production standards of the electric meter in the temperature range of -25 DEG C and 65 DEG C. The sieving method is simple and the work efficiency of the electric meter manufacture enterprise IQC and the production qualification rate of the electric meter are increased.
Description
Technical field
The utility model relates to the detection screening of electric energy computation chip, relates in particular to a kind of device that can carry out the temperature drift screening simultaneously to a plurality of electric energy computation chips.
Background technology
In the production of intelligent electric energy meter, the precision of the computation chip of employing and degree of stability are the key indexs of device.Yet, electric energy computation chip has temperature drift in various degree, and the drift of the chip temperature of different manufacturers different batches is also inconsistent, therefore ammeter enterprise can't guarantee that in the buying of computation chip each batch all has the consistent temperature performance, also just makes the ammeter product can find that after dispatching from the factory data are drifted about, metering is inaccurate.
In view of the foregoing, carrying out the temperature screening is very important for intelligent electric energy meter at the material procurement of producing early stage.
At present, ammeter enterprise there is no the test job that special equipment carries out computation chip, adopts manual measurement mostly, or ammeter production is just tested after finishing.
The utility model content
The purpose of this utility model is that at the deficiencies in the prior art providing a kind of can carry out the temperature drift test to a plurality of electric energy computation chips apace simultaneously, thereby screens the device of qualified electric energy computation chip.
Above-mentioned purpose of the present utility model is achieved by following scheme:
A kind of temperature drift screening plant of electric energy computation chip, this device comprise electric energy computation chip slot, electric energy metrical module, single-chip microcomputer and the power module of powering for each parts, wherein:
Can insert the polylith electric energy computation chip in the electric energy computation chip slot, form, be convenient to operating personnel and test plug, loop test by a plurality of special-purpose chip under test slots;
The ac signal source that the power that the electric energy metrical module provides power module is known is inserted respectively in every groove of electric energy computation chip slot, the ac signal of the electric energy computation chip in every groove output is changed into the full sized pules signal be input in the single-chip microcomputer.
The temperature drift screening plant of above-mentioned electric energy computation chip, its course of work is earlier a plurality of electric energy computation chips to be positioned in the electric energy computation chip slot, and this electric energy computation chip slot is placed in the sweat box, design temperature oven temperature, degree, the temperature of choosing in necessary several-25 ℃ to 65 ℃ is carried out duplicate measurements; The ac signal source that the power that power module is provided by the electric energy metrical module is known is then inserted respectively in every groove of electric energy computation chip slot, and then the ac signal will the electric energy computation chip in every groove exported of electric energy metrical module changes into the full sized pules signal and is input in the single-chip microcomputer; Single-chip microcomputer receives from the full sized pules signal of each electric energy computation chip under condition of different temperatures of electric energy metrical module output, pulse constant according to metering circuit, calculate corresponding electric weight, with the electric weight that calculates and known reference value (being the electric weight in the known ac signal source of the power that provides of power module) thus compare and draw the whether qualified conclusion of electric energy computation chip to be measured.
The temperature drift screening plant of above-mentioned electric energy computation chip also comprises and is used to show every electric weight numerical value that single-chip microcomputer calculates and the display circuit that reports an error.The demonstration output terminal of single-chip microcomputer is connected with the input end of display circuit.
The temperature drift screening plant of above-mentioned electric energy computation chip also comprises the key circuit that is used for to the single-chip microcomputer input control order, single-chip microcomputer is connected with key circuit, by the tester to manual operations such as key circuit start, stops, restarting, send instruction to single-chip microcomputer, by the Single-chip Controlling screening process by key circuit.
The temperature drift screening plant of above-mentioned electric energy computation chip also comprises and is used to store memory of data, storer is connected with the data access port of single-chip microcomputer, but the electric weight numerical value input store that single-chip microcomputer calculates carries out this locality storage, during use data is accessed from storer.
The temperature screening plant of above-mentioned electric energy computation chip, its principle of work is as follows:
A plurality of electric energy computation chips are positioned in the electric energy computation chip slot, and this electric energy computation chip slot is placed in the sweat box, design temperature oven temperature, degree, the temperature of choosing in necessary several-25 ℃ to 65 ℃ is carried out duplicate measurements; Operating personnel send operational order by key circuit to single-chip microcomputer, single-chip microcomputer receives the known ac signal source of power that control electric energy metrical module provides power module behind the operational order and inserts the electric energy computation chip slot respectively, and then the electric energy metrical module converts the ac signal of each electric energy computation chip output to the full sized pules signal and is input to single-chip microcomputer; Single-chip microcomputer is received the full sized pules signal of each electric energy computation chip under condition of different temperatures of electric energy metrical module output, pulse constant according to metering circuit, calculate corresponding electric weight, but the electric weight numerical value input store that calculates carries out this locality storage, during use data are accessed from storer, by display circuit the electric weight that calculates is shown output, the electric weight numerical value of this each electric energy computation chip of test gained under different temperatures and known reference value (being the electric weight in the known ac signal source of the power that provides of power module) are compared analysis, thereby judge whether this batch multi-disc computation chip is qualified.
Adopt serial communication between above-mentioned electric energy metrical module and the single-chip microcomputer, RS232 interface or general-purpose serial bus USB that described serial communication can adopt those skilled in the art to use always.
Also be provided with light-coupled isolation between above-mentioned electric energy metrical module and the single-chip microcomputer, thereby weak current parts such as pulse strong power part that electric energy metrical module and electric energy computation chip are produced and single-chip microcomputer separately.Any optocoupler that described optocoupler can adopt those skilled in the art to use always, for example optocoupler NEC2501.
Power module of the present utility model specifically is divided into two kinds of power supplys:
First kind is adopted manganese copper diverter, voltage potential-divider network that the 220V voltage in the household electricity circuit and 10A electrorheological are changed into fixedly known voltage and electric current within desired input voltage of electric energy computation chip and the input current scope, the supply of electrical energy metering module is as the reference power supply, i.e. the known ac signal source of power that provides of power module;
Second kind is adopted step-down current limliting, rectifying and wave-filtering and voltage stabilizing that the 220V voltage transition in the household electricity circuit is become direct current, as 5V, and the serial communication chip between supply single-chip microcomputer, display circuit and electric power meter and the screening plant etc.
Be compared with the prior art, the utlity model has following beneficial effect:
Electric energy computation chip temperature drift screening plant of the present utility model, can carry out the temperature screening to a plurality of electric energy computation chips simultaneously, can filter out in-25 ℃ to 65 ℃ temperature drift in the ammeter production standard with interior chip, and screening technique is simple, can improve the work efficiency of the IQC of ammeter manufacturing enterprise and the production qualification rate of ammeter.
Description of drawings
Fig. 1 is for being schematic block diagram of the present utility model;
Fig. 2 is the schematic block diagram of optical coupling isolation circuit of the present utility model.
Embodiment
Below in conjunction with specific embodiment the utility model is done description further, but specific embodiment is not done any qualification to the utility model.
As shown in Figure 1, the temperature drift screening plant of a kind of electric energy computation chip of the present utility model comprises electric energy computation chip slot, electric energy metrical module, single-chip microcomputer and the power module of powering for each parts, wherein:
Can insert polylith electric energy computation chip to be measured in the electric energy computation chip slot;
The ac signal source that the power that the electric energy metrical module provides power module is known is inserted respectively in every groove of electric energy computation chip slot, the ac signal of the electric energy computation chip in every groove output is changed into the full sized pules signal be input in the single-chip microcomputer.
The temperature drift screening plant of electric energy computation chip of the present utility model comprises also being used to show every electric weight numerical value that single-chip microcomputer calculates and the display circuit that reports an error that the demonstration output terminal of single-chip microcomputer is connected with the input end of display circuit.
The temperature screening drift device of electric energy computation chip of the present utility model, also comprise the key circuit that is used for to the single-chip microcomputer input control order, single-chip microcomputer is connected with key circuit, by the tester to manual operations such as key circuit start, stops, restarting, send instruction to single-chip microcomputer, by the Single-chip Controlling screening process by key circuit.
The temperature screening drift device of electric energy computation chip of the present utility model, also comprise and be used to store memory of data, storer is connected with the storage signal output terminal of single-chip microcomputer, but the electric weight numerical value input store that single-chip microcomputer calculates carries out this locality storage, during use data is accessed from storer.
Principle of work of the present utility model is as follows:
A plurality of electric energy computation chips are positioned in the electric energy computation chip slot, and this electric energy computation chip slot is placed in the sweat box, design temperature oven temperature, degree, the temperature of choosing in necessary several-25 ℃ to 65 ℃ is carried out duplicate measurements; Operating personnel send operational order by key circuit to single-chip microcomputer, single-chip microcomputer receives the known ac signal source of power that control electric energy metrical module provides power module behind the operational order and inserts the electric energy computation chip slot respectively, and then the electric energy metrical module converts the ac signal of each electric energy computation chip output to the full sized pules signal and is input to single-chip microcomputer; Single-chip microcomputer is received the full sized pules signal of each electric energy computation chip under condition of different temperatures of electric energy metrical module output, pulse constant according to metering circuit, calculate corresponding electric weight, but the electric weight numerical value input store that calculates carries out this locality storage, during use data are accessed from storer, by display circuit the electric weight that calculates is shown output, the electric weight numerical value of this each electric energy computation chip of test gained under different temperatures and known reference value (being the electric weight in the known ac signal source of the power that provides of power module) are compared analysis, thereby judge whether this batch multi-disc computation chip is qualified.
In the temperature drift screening plant of electric energy computation chip of the present utility model, adopt serial communication between electric power meter and the single-chip microcomputer, RS232 interface or general-purpose serial bus USB that described serial communication can adopt those skilled in the art to use always.
In the temperature drift screening plant of electric energy computation chip of the present utility model, power module is connected with the electric energy metrical module, provide power known ac signal source, power module also is connected respectively with serial ports, single-chip microcomputer, storer, key circuit and display circuit, for each functional part provides power supply.
As shown in Figure 2, in the temperature drift screening plant of electric energy computation chip of the present utility model, also be provided with light-coupled isolation between electric power meter and the single-chip microcomputer, thereby weak current parts such as pulse strong power part that electric energy metrical module and electric energy computation chip are produced and single-chip microcomputer separately.Any optocoupler that described optocoupler can adopt those skilled in the art to use always, for example optocoupler NEC2501.
Claims (8)
1. the temperature drift screening plant of an electric energy computation chip is characterized in that this device comprises electric energy computation chip slot, electric energy metrical module, single-chip microcomputer and gives the power module of each parts power supply; Can insert the polylith electric energy computation chip in the described electric energy computation chip slot; The ac signal source that the power that described electric energy metrical module provides power module is known is inserted respectively in every groove of electric energy computation chip slot, the ac signal of the electric energy computation chip in every groove output is changed into the full sized pules signal be input in the single-chip microcomputer.
2. the temperature drift screening plant of a kind of electric energy computation chip according to claim 1, it is characterized in that this device also comprises is used to show every electric weight numerical value that single-chip microcomputer calculates and the display circuit that reports an error, and the input end of described display circuit is connected with the demonstration output terminal of single-chip microcomputer.
3. the temperature drift screening plant of a kind of electric energy computation chip according to claim 1 is characterized in that this device also comprises the key circuit that is used for to the single-chip microcomputer input control order.
4. the temperature drift screening plant of a kind of electric energy computation chip according to claim 1 is characterized in that this device also comprises and is used to store memory of data that described storer is connected with the data access port of single-chip microcomputer.
5. according to the temperature drift screening plant of the described a kind of electric energy computation chip of claim 1, it is characterized in that described electric energy metrical module is connected with single-chip microcomputer by serial ports.
6. according to the temperature drift screening plant of the described a kind of electric energy computation chip of claim 5, it is characterized in that described serial ports is RS232 or USB interface.
7. according to the temperature drift screening plant of the described a kind of electric energy computation chip of claim 1, it is characterized in that also being provided with light-coupled isolation between described electric energy metrical module and the single-chip microcomputer.
8. according to the temperature drift screening plant of the described a kind of electric energy computation chip of claim 7, it is characterized in that described light-coupled isolation is optocoupler NEC2501.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205017561U CN201740865U (en) | 2010-08-20 | 2010-08-20 | Temperature drift sieving device of an electric energy measurement chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205017561U CN201740865U (en) | 2010-08-20 | 2010-08-20 | Temperature drift sieving device of an electric energy measurement chip |
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| Publication Number | Publication Date |
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| CN201740865U true CN201740865U (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205017561U Expired - Fee Related CN201740865U (en) | 2010-08-20 | 2010-08-20 | Temperature drift sieving device of an electric energy measurement chip |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102258403A (en) * | 2011-05-04 | 2011-11-30 | 上海理工大学 | Muscle force proportional speed regulating artificial hand control system and method |
| CN102819943A (en) * | 2012-08-09 | 2012-12-12 | 宁夏隆基宁光仪表有限公司 | Concentrator with metering function |
| CN107255746A (en) * | 2017-06-22 | 2017-10-17 | 黄淮学院 | A kind of single-phase electricity electric power meter |
-
2010
- 2010-08-20 CN CN2010205017561U patent/CN201740865U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102258403A (en) * | 2011-05-04 | 2011-11-30 | 上海理工大学 | Muscle force proportional speed regulating artificial hand control system and method |
| CN102819943A (en) * | 2012-08-09 | 2012-12-12 | 宁夏隆基宁光仪表有限公司 | Concentrator with metering function |
| CN107255746A (en) * | 2017-06-22 | 2017-10-17 | 黄淮学院 | A kind of single-phase electricity electric power meter |
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| C14 | Grant of patent or utility model | ||
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Temperature drift sieving device of an electric energy measurement chip Effective date of registration: 20150106 Granted publication date: 20110209 Pledgee: Bank of China, Limited by Share Ltd, Huizhou branch Pledgor: Huizhou Midtown Electronic Technology Co., Ltd.|Huang Hongzhang Registration number: 2015990000013 |
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Date of cancellation: 20200820 Granted publication date: 20110209 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20190820 |