CN113109752A - Attenuation time calibration device of electrostatic attenuation tester and working method thereof - Google Patents
Attenuation time calibration device of electrostatic attenuation tester and working method thereof Download PDFInfo
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- CN113109752A CN113109752A CN202110556616.7A CN202110556616A CN113109752A CN 113109752 A CN113109752 A CN 113109752A CN 202110556616 A CN202110556616 A CN 202110556616A CN 113109752 A CN113109752 A CN 113109752A
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Abstract
The invention discloses a device for calibrating attenuation time of a static attenuation tester and a working method thereof, wherein the device comprises a calibrated static attenuation tester and an attenuation time calibrating device, wherein an input high-end interface and an input low-end interface are respectively connected with the input end of the calibrated static attenuation tester; the attenuation time calibration device comprises a power supply input end, a first power supply conversion unit, a second power supply conversion unit, a programmable display unit, a programmable control unit, a first high-voltage switch and a second high-voltage switch. The attenuation time calibrating device of the electrostatic attenuation tester can realize the calibration of the attenuation time parameter of the electrostatic attenuation tester by comparing the attenuation time preset by the calibrating device with the attenuation time measured by the calibrated instrument; the calibration device is provided with a pulse signal output port, and the time parameter of the calibration device can be traced through an external general counter; the device has the advantages of simple operation and high detection efficiency.
Description
Technical Field
The invention belongs to the technical field of detecting instruments, and particularly relates to a device for calibrating attenuation time of an electrostatic attenuation tester. The invention also relates to a working method of the device for calibrating the attenuation time of the electrostatic attenuation tester.
Background
The ionized static eliminator is widely applied in China as a general antistatic device. It is estimated that there are about hundreds of thousands sets of ionized static electricity eliminators applied to the fields of electronics, petroleum, manufacturing, etc. in China. For the test of the capability of the ionized static eliminator to eliminate static electricity, international and domestic standards have corresponding regulations and descriptions, such as SJ/T10694-2006 general Specification for electrostatic prevention detection of electronic product manufacturing and application systems, ESDSTM3.1-2006 protection-ionization of electrostatic discharge sensitive products, and the like. The testing of the static eliminator in these standards requires a special testing device, namely a static attenuation tester. At present, no published calibration standard is issued in the country, wherein, IEC 61340-5-1:2016 "Protection of electronic devices from electronic technology" -General requirements "provides a calibration method for attenuation time parameters of an electrostatic attenuation tester, but no special calibration device is available at present, so that a calibration device for the attenuation time is urgently needed to be developed, and the attenuation time parameters can be calibrated to meet the tracing requirement.
The decay time of an electrostatic decay tester is the time required for the voltage of a charged body to drop to a given percentage of its starting voltage (i.e. the stopping voltage), and is measured according to the requirements in IEC 61340-5-1:2016 "Protection of electronic devices from electronic technology- -General requirements" for the time required for the voltage of a charged body to drop from 1000V to 100V. In the attenuation time measuring process of the electrostatic attenuation tester for the ionized electrostatic eliminator, the accumulated charge quantity between the plates is very small, and the resistance between the plates is very high (generally 10)15Omega) and a common electronic signal recording device has an input resistance of only 108Omega is about, so the method of collecting the discharge waveform cannot be used for directly measuring.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide a device for calibrating the attenuation time of an electrostatic attenuation tester, which solves the problem that the attenuation time of the electrostatic attenuation tester cannot be measured by a discharge waveform acquisition method. The purpose of this patent application is to design a dedicated static decay time calibrating device, realizes calibrating the static decay time parameter. As a standard device for calibration, the device can trace the source and meet the precision requirement of electrostatic decay time calibration.
The technical scheme is as follows: a decay time calibration device of a static decay tester comprises a calibrated static decay tester and a decay time calibration device, wherein an input high-end interface and an input low-end interface are arranged on the decay time calibration device, and the input high-end interface and the input low-end interface are respectively connected with the input end of the calibrated static decay tester; the attenuation time calibration device comprises a power input end, a power conversion unit I, a power conversion unit II, a programmable display unit, a programmable control unit, a high-voltage switch I and a high-voltage switch II, wherein the power input end is connected with the power input end of the power conversion unit I, a power output end branch circuit I of the power conversion unit I is connected with the power input end of the power conversion unit II, a power output end of the power conversion unit II is connected with the programmable display unit, the programmable display unit is connected with the programmable control unit, a power output end branch circuit II of the power conversion unit I is connected with the programmable control unit, an output end of the programmable control unit is respectively connected with the high-voltage switch I and the high-voltage switch II, and the high-voltage switch I is connected with an input high-end interface and an input low-end interface through, and the second high-voltage switch is connected with the input high-end interface and the input low-end interface through a capacitor. The device for calibrating the attenuation time of the electrostatic attenuation tester can calibrate the attenuation time parameter of the electrostatic attenuation tester. The high end and the low end of the calibration device are respectively connected with a charging flat plate and a grounding end of the calibrated electrostatic attenuation tester; the calibration device presets the attenuation time, and the preset time range is 1-600 s; the calibrated instrument is charged, when the charging of a charging plate of the calibrated instrument is greater than the initial voltage, a discharging button is started, the calibrating device and the calibrated instrument simultaneously start a timing function, and after the preset attenuation time is reached, the calibrating device and the calibrated instrument simultaneously start the timing function and simultaneously stop timing; the attenuation time preset by the calibration device is compared with the attenuation time measured by the calibrated instrument, so that the calibration of the attenuation time parameter of the electrostatic attenuation tester can be realized; the calibration device is provided with a pulse signal output port, and the time parameter of the calibration device can be traced through an external general counter; the device has the advantages of simple operation and high detection efficiency.
Further, according to the attenuation time calibration device for the electrostatic attenuation tester, the programmable control unit is connected with the first calibration signal output end and the second calibration signal output end through the conducting wire, the first resistor is connected between the first calibration signal output end and the second calibration signal output end in series, and the second resistor is connected between the branch where the second calibration signal output end is located and the programmable control unit in series. The first calibration signal output end and the second calibration signal output end are used for measuring whether the programmable control unit (timer) is accurate or not.
Further, in the above calibration apparatus for the decay time of the electrostatic decay tester, the positive electrode of the first output end of the power conversion unit is connected to the branch where the second calibration signal output end is located, and the second resistor is located between the intersection point of the branch where the first resistor and the second calibration signal output end are located and the intersection point of the branch where the positive electrode of the first output end of the power conversion unit and the second calibration signal output end are located.
Further, according to the attenuation time calibration device of the electrostatic attenuation tester, the first high-voltage switch and the second high-voltage switch are connected in parallel, a branch where the first high-voltage switch is located is connected with the first high-voltage capacitor, and a branch where the second high-voltage switch is located is connected with the second high-voltage capacitor.
Further, in the above calibration apparatus for the decay time of the electrostatic decay tester, the power input terminal is a 220V ac power supply.
Further, in the above calibration apparatus for the decay time of the electrostatic decay tester, the first power conversion unit may convert 220V ac voltage at the power input end into 24V dc voltage, and the second power conversion unit may convert 24V dc voltage output by the first power conversion unit into 5V dc voltage.
Further, in the above device for calibrating the decay time of the electrostatic decay tester, RS232 communication is adopted between the programmable display unit and the programmable control unit.
The invention also provides a working method of the device for calibrating the attenuation time of the electrostatic attenuation tester, which comprises the following steps:
s1 setting the initial voltage of the calibrated electrostatic decay testerV 1The stop voltage of the calibrated electrostatic decay tester is set toV 2；
S2, initially, the first high-voltage switch and the second high-voltage switch are both in a disconnected state, the charging plate of the calibrated electrostatic decay tester is connected with the input high-end interface of the decay time calibration device, and the grounding end of the calibrated electrostatic decay tester is connected with the input low-end interface of the decay time calibration device;
s3, setting the attenuation time to T by the attenuation time calibrating device0，T0Is in the range of 1s to 600 s;
s4, charging the calibrated electrostatic attenuation tester, wherein the charging voltage of the calibrated electrostatic attenuation tester is higher than the initial voltageV 1At this time, the calibrated electrostatic attenuation tester is at voltageU sA state;
s5, the first high-voltage switch is closed, the charge on the charging plate of the calibrated electrostatic attenuation tester is instantaneously transferred to the first high-voltage capacitor, the calibrated electrostatic attenuation tester discharges, and the voltage U issIs instantaneously pulled down, the voltage on the charging plate of the corrected electrostatic attenuation tester is instantaneously reduced to be less than the initial voltageV 1Greater than the stopping voltageV 2The voltage value of (1), i.e. the voltage on the charging plate of the calibrated electrostatic decay tester drops toU M；
S6, the calibrated electrostatic decay tester and the decay time calibration device start the decay time timing function at the same time, and the voltage is maintainedU MIn the state, the calibrated electrostatic decay tester and the decay time calibration device continuously time;
s7, when the time of the decay time calibration device reaches T0When the high-voltage switch II is closed, the charge on the charging plate of the calibrated electrostatic attenuation tester is instantaneously transferred into the high-voltage capacitor II, and the voltage on the charging plate of the calibrated electrostatic attenuation testerU MIs instantaneously pulled down and is corrected the voltage on the charging plate of the electrostatic attenuation testerU MInstantaneously dropping to less than the stop voltageV 2When the voltage on the charging plate of the calibrated electrostatic decay tester drops toU D；
S8, stopping the time counted by the static electricity attenuation tester, and recording the time asT xAttenuation time measurement value of the electrostatic attenuation tester to be correctedT xTime preset with calibration meansT 0And comparing to judge whether the index meets the technical requirement of the standard attenuation time of the static electricity attenuation tester.
The technical scheme shows that the invention has the following beneficial effects: the device for calibrating the attenuation time of the electrostatic attenuation tester has the following advantages:
1. the attenuation time calibration device of the electrostatic attenuation tester adopts the principle of synchronous timing with the tested instrument to realize the adjustment of the attenuation time within the range of 1 s-600 s;
2. the attenuation time calibration device of the electrostatic attenuation tester is provided with a pulse calibration signal output end, and the time parameter of the attenuation time calibration device can be traced through an external general counter;
3. the static decay time calibration device is simple to operate, convenient to measure and capable of improving calibration efficiency.
Drawings
FIG. 1 is a schematic structural diagram of a decay time calibration device of an electrostatic decay tester according to the present invention;
FIG. 2 is a schematic diagram of the electrical connection of the decay time calibration device according to the present invention;
fig. 3 is a schematic diagram of the working principle of the device for calibrating the decay time of the electrostatic decay tester.
In the figure: the device comprises a calibrated electrostatic attenuation tester 100, an attenuation time calibration device 200, an input high-end interface 201, an input low-end interface 202, a power input end 1, a power conversion unit I2, a power conversion unit II 3, a programmable display unit 4, a programmable control unit 5, a high-voltage switch I6, a high-voltage switch II 7, a calibration signal output end I8, a calibration signal output end II 9, a resistor I10, a resistor II 11, a high-voltage capacitor I12 and a high-voltage capacitor II 13.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example one
The attenuation time calibration device of the electrostatic decay tester shown in fig. 1 includes a calibrated electrostatic decay tester 100 and an attenuation time calibration device 200, wherein an input high-end interface 201 and an input low-end interface 202 are provided on the attenuation time calibration device 200, and the input high-end interface 201 and the input low-end interface 202 are respectively connected with an input end of the calibrated electrostatic decay tester 100.
Wherein, the decay time calibration apparatus 200 shown in fig. 2 comprises a power input end 1, a power conversion unit i 2, a power conversion unit ii 3, a programmable display unit 4, a programmable control unit 5, a high-voltage switch i 6 and a high-voltage switch ii 7, the power input end 1 is connected with the power input end of the power conversion unit i 2, a power output end branch of the power conversion unit i 2 is connected with the power input end of the power conversion unit ii 3, a power output end of the power conversion unit ii 3 is connected with the programmable display unit 4, the programmable display unit 4 is connected with the programmable control unit 5, a power output end branch of the power conversion unit i 2 is connected with the programmable control unit 5, an output end of the programmable control unit 5 is respectively connected with the high-voltage switch i 6 and the high-voltage switch ii 7, the high-voltage switch i 6 is connected with an input high-end interface 201 and an input low-end interface 202 through a capacitor, the second high-voltage switch 7 is connected with the input high-side interface 201 and the input low-side interface 202 through capacitors.
In addition, the programmable control unit 5 is connected with a first calibration signal output end 8 and a second calibration signal output end 9 through a lead, a first resistor 10 is connected in series between the first calibration signal output end 8 and the second calibration signal output end 9, and a second resistor 11 is connected in series between a branch where the second calibration signal output end 9 is located and the programmable control unit 5. The positive pole of the output end of the first power conversion unit 2 is connected with the branch where the second calibration signal output end 9 is located, and the second resistor 11 is located between the intersection point of the branch where the first resistor 10 and the second calibration signal output end 9 are located and the intersection point of the positive pole of the output end of the first power conversion unit 2 and the branch where the second calibration signal output end 9 is located. The high-voltage switch I6 and the high-voltage switch II 7 are connected in parallel, a branch where the high-voltage switch I6 is located is connected with a high-voltage capacitor I12, and a branch where the high-voltage switch II 7 is located is connected with a high-voltage capacitor II 13.
The conversion relation of the power supply is as follows: the power input end 1 is a 220V alternating current power supply, the first power conversion unit 2 can convert 220V alternating current voltage of the power input end 1 into 24V direct current voltage, and the second power conversion unit 3 can convert 24V direct current voltage output by the first power conversion unit 2 into 5V direct current voltage.
In addition, RS232 communication is adopted between the programmable display unit 4 and the programmable control unit 5.
The power supply conversion unit I2 converts the input 220V alternating voltage into 24V direct voltage and supplies power to the power supply conversion unit II 3 and the programmable control unit 5 (a timer); the power supply conversion unit II 3 converts the input 24V direct current voltage into 5V direct current voltage to supply power to the programmable display unit 4; the programmable display unit 4 is connected with a programmable control unit 5 (timer) through an RS232 interface, and the programmable display unit 4 has operability and can preset the time of the timer and start the timing function of the timer; the programmable control unit 5 (timer) has a timing function, the high-voltage switch I6 and the high-voltage switch II 7 can be controlled to be closed by starting and ending timing, the high-voltage switch I6 is controlled to be closed at the moment when the programmable control unit 5 (timer) is started, and the high-voltage switch I6 is controlled to be closed at the moment when the timing is ended; in addition, the programmable control unit 5 (timer) can output a pulse calibration signal, the pulse period is the time preset by the timer, the level value of the pulse calibration signal depends on the pull-up resistor II 11 (current limiting function) and the output resistor I10, and the pulse calibration signal can trace the time parameter of the pulse calibration signal through an external general counter; the first high-voltage capacitor 12 and the second high-voltage capacitor 13 are used for transferring charges on a charging plate of the calibrated static electricity tester, when the first high-voltage switch 6 is closed, the charges on the charging plate of the calibrated static electricity tester are instantaneously transferred into the first high-voltage capacitor 12, the voltage on the charging plate of the calibrated static electricity tester is instantaneously reduced to a voltage value smaller than the initial voltage and larger than the stop voltage, when the second high-voltage switch 7 is closed, the charges on the charging plate of the calibrated static electricity tester are instantaneously transferred into the second high-voltage capacitor 13, the voltage on the charging plate of the calibrated static electricity tester is instantaneously reduced to a voltage value smaller than the stop voltage, and the capacities of the first high-voltage capacitor 12 and the second high-voltage capacitor determine the quantity of the transferred charges, namely the reduced value of the voltage on the charging plate of the calibrated static electricity tester, which is.
Based on the above connection structure, the working method of the device for calibrating the attenuation time of the electrostatic attenuation tester shown in fig. 3 comprises the following steps:
s1 setting the initial voltage of the calibrated electrostatic decay tester 100V 1The stop voltage of the calibrated electrostatic decay tester 100 is set toV 2；
S2, initially, the first high-voltage switch 6 and the second high-voltage switch 7 are both in an off state, the charging pad of the calibrated electrostatic decay tester 100 is connected to the input high-side interface 201 of the decay time calibration apparatus 200, and the ground terminal of the calibrated electrostatic decay tester 100 is connected to the input low-side interface 202 of the decay time calibration apparatus 200;
s3, the decay time calibration device 200 presets the decay time to T0，T0Is in the range of 1s to 600 s;
s4, charging the calibrated electrostatic decay tester 100, wherein the charging voltage of the calibrated electrostatic decay tester 100 is higher than the initial voltageV 1At this time, the calibrated electrostatic decay tester 100 is at voltageU sA state;
s5, the first high-voltage switch 6 is closed, the charge on the charging plate of the calibrated electrostatic attenuation tester 100 is instantaneously transferred to the first high-voltage capacitor 12, the calibrated electrostatic attenuation tester 100 discharges, and the voltage U issIs momentarily pulled down and the voltage on the charging plate of the calibrated electrostatic decay tester 100 momentarily drops below the initial voltageV 1Greater than the stopping voltageV 2The voltage value of the voltage on the charging plate of the calibrated electrostatic decay tester 100 is reduced toU M；
S6, the calibrated electrostatic decay tester 100 and the decay time calibration device 200 start the decay time timing function at the same time, and maintain the voltageU MIn the state, the calibrated electrostatic decay tester 100 and the decay time calibration device 200 continuously count time;
s7, when the decay time calibration device 200 reaches T0When the high-voltage switch II 7 is closed, the charges on the charging plate of the calibrated electrostatic attenuation tester 100 are instantaneously transferred into the high-voltage capacitor II 13, and the voltage on the charging plate of the calibrated electrostatic attenuation tester 100U MIs momentarily pulled down and the voltage on the charging plate of the tester 100 is corrected for electrostatic decayU MInstantaneously dropping to less than the stop voltageV 2When the voltage on the charging plate of the calibrated electrostatic decay tester 100 drops toU D；
S8, the calibrated electrostatic decay tester 100 stops timing, and the time is recorded asT xThe decay time measurement of the electrostatic decay tester 100 to be calibratedT xTime preset with calibration meansT 0And comparing to judge whether the index meets the technical requirement of the standard attenuation time of the static electricity attenuation tester.
Example two
The specific embodiment is as follows:
A. the first high-voltage capacitor 12 can be formed by connecting two capacitors of 10kV/470pF in series, and the second high-voltage capacitor 13 can be formed by connecting 10kV/6800 pF. The resistor I10 can adopt a 10k omega resistor, the resistor II 11 can adopt a 2k omega resistor, and the level value of the output pulse calibration signal is 20V;
B. the connection between the calibrated electrostatic decay tester and the calibration device is shown in fig. 1, wherein the starting voltage V1 of the calibrated electrostatic decay tester is 1000V, and the stopping voltage V2 is 100V;
and respectively connecting the charging panel and the grounding terminal of the calibrated electrostatic attenuation tester with the input high terminal and the input low terminal of the calibration device, wherein the switch K1 and the second high-voltage switch 7 are in an off state.
The calibration device performs a decay time preset T0 (which may be in the range of 1s to 600 s).
The calibrated electrostatic decay tester is charged, the charging voltage is higher than the initial voltage V1, and the calibrated electrostatic decay tester is in a voltage Us state. The calibrated electrostatic decay tester discharges, the switch K1 is closed, the voltage Us is instantly pulled down and drops to UM (UM < V1), and the decay time timing function is almost simultaneously started by the calibration device and the calibrated electrostatic decay tester. The calibration unit and the calibrated electrostatic decay tester are continuously clocked while the voltage remains in the UM state.
When the timing of the calibration device reaches T0, the second switch high-voltage switch 7 is closed, the voltage UM is instantaneously pulled down and drops to UD, and when the voltage UM instantaneously drops to the stop voltage V2 (V2 > UD), the calibrated electrostatic decay tester times to Tx stop. And comparing the attenuation time measured value Tx of the calibrated electrostatic attenuation tester with the time T0 preset by the calibration device, and judging whether the index meets the technical requirements.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (8)
1. The utility model provides an electrostatic decay tester decay time calibrating device which characterized in that: the calibration device comprises a calibrated electrostatic decay tester (100) and a decay time calibration device (200), wherein an input high-end interface (201) and an input low-end interface (202) are arranged on the decay time calibration device (200), and the input high-end interface (201) and the input low-end interface (202) are respectively connected with an input end of the calibrated electrostatic decay tester (100);
the decay time calibration device (200) comprises a power input end (1), a power conversion unit I (2), a power conversion unit II (3), a programmable display unit (4), a programmable control unit 5 (5), a high-voltage switch I (6) and a high-voltage switch II (7), wherein the power input end (1) is connected with the power input end of the power conversion unit I (2), a power output end branch I of the power conversion unit I (2) is connected with the power input end of the power conversion unit II (3), a power output end of the power conversion unit II (3) is connected with the programmable display unit (4), the programmable display unit (4) is connected with the programmable control unit 5 (5), the power output end branch II of the power conversion unit I (2) is connected with the programmable control unit 5 (5), and output ends of the programmable control unit 5 (5) are respectively connected with the high-voltage switch I (6) and the high-voltage switch II (3), the programmable display unit (4) is connected with the The second high-voltage switch (7) is connected with the first input high-end interface (201) and the second input low-end interface (202) through capacitors, and the second high-voltage switch (7) is connected with the first input high-end interface (201) and the second input low-end interface (202) through capacitors.
2. The electrostatic decay tester decay time calibration apparatus of claim 1, wherein: the programmable control unit 5 (5) is connected with a first calibration signal output end (8) and a second calibration signal output end (9) through a lead, a first resistor (10) is connected in series between the first calibration signal output end (8) and the second calibration signal output end (9), and a second resistor (11) is connected in series between a branch where the second calibration signal output end (9) is located and the programmable control unit 5 (5).
3. The electrostatic decay tester decay time calibration apparatus of claim 2, wherein: the positive pole of the output end of the power conversion unit I (2) is connected with the branch where the calibration signal output end II (9) is located, and the resistor II (11) is located between the intersection point of the branch where the resistor I (10) and the calibration signal output end II (9) are located and the intersection point of the branch where the positive pole of the output end of the power conversion unit I (2) and the calibration signal output end II (9) are located.
4. The electrostatic decay tester decay time calibration apparatus of claim 3, wherein: the high-voltage switch I (6) and the high-voltage switch II (7) are connected in parallel, a branch at the position of the high-voltage switch I (6) is connected with a high-voltage capacitor I (12), and a branch at the position of the high-voltage switch II (7) is connected with a high-voltage capacitor II (13).
5. The electrostatic decay tester decay time calibration apparatus of claim 4, wherein: the power input end (1) is a 220V alternating current power supply.
6. The electrostatic decay tester decay time calibration apparatus of claim 5, wherein: the power supply conversion unit I (2) can convert 220V alternating current voltage of the power supply input end (1) into 24V direct current voltage, and the power supply conversion unit II (3) can convert the 24V direct current voltage output by the power supply conversion unit I (2) into 5V direct current voltage.
7. The electrostatic decay tester decay time calibration apparatus of claim 6, wherein: RS232 communication is adopted between the programmable display unit (4) and the programmable control unit 5 (5).
8. The method of operating an apparatus for calibrating a decay time of an electrostatic decay tester according to any one of claims 4 to 7, wherein: the method comprises the following steps:
s1, setting the initial voltage of the calibrated electrostatic decay tester (100)V 1The stop voltage of the calibrated electrostatic decay tester (100) is set toV 2；
S2, initially, the high-voltage switch I (6) and the high-voltage switch II (7) are both in an off state, a charging plate of the calibrated electrostatic decay tester (100) is connected with an input high-end interface (201) of the decay time calibration device (200), and a grounding end of the calibrated electrostatic decay tester (100) is connected with an input low-end interface (202) of the decay time calibration device (200);
s3, the decay time calibration device (200) presets the decay time to T0，T0Is in the range of 1s to 600 s;
s4 corrected electrostatic decayThe tester (100) is charged, and the charging voltage of the calibrated electrostatic decay tester (100) is higher than the initial voltageV 1At this time, the calibrated electrostatic decay tester (100) is at voltageU sA state;
s5, the high-voltage switch I (6) is closed, the charge on the charging plate of the calibrated electrostatic attenuation tester (100) is instantaneously transferred to the high-voltage capacitor I (12), the calibrated electrostatic attenuation tester (100) discharges, and the voltage UsIs instantaneously pulled down, the voltage on the charging plate of the corrected electrostatic decay tester (100) is instantaneously reduced to be less than the initial voltageV 1Greater than the stopping voltageV 2The voltage value of the voltage on the charging plate of the calibrated electrostatic decay tester (100) is reduced toU M；
S6, the calibrated electrostatic decay tester (100) and the decay time calibration device (200) start the decay time timing function at the same time, and the voltage is maintainedU MIn the state, the calibrated electrostatic decay tester (100) and the decay time calibration device (200) continuously time;
s7, when the time of the decay time calibration device (200) reaches T0When the high-voltage switch II (7) is closed, the charge on the charging plate of the calibrated electrostatic attenuation tester (100) is instantaneously transferred into the high-voltage capacitor II (13), and the voltage on the charging plate of the calibrated electrostatic attenuation tester (100)U MIs momentarily pulled down and the voltage on the charging plate of the tester (100) is corrected for electrostatic decayU MInstantaneously dropping to less than the stop voltageV 2When the voltage on the charging plate of the calibrated electrostatic decay tester (100) drops toU D；
S8, the calibrated electrostatic decay tester (100) stops timing, and the time is recorded asT xThe decay time measurement of the electrostatic decay tester (100) to be calibratedT xTime preset with calibration meansT 0And comparing to judge whether the index meets the technical requirement of the standard attenuation time of the static electricity attenuation tester.
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| CN114035416A (en) * | 2021-10-21 | 2022-02-11 | 山东省计量科学研究院 | Method for measuring and calibrating emergency time of detector of fire-fighting emergency lighting lamp |
| CN115219974A (en) * | 2022-09-15 | 2022-10-21 | 快克智能装备股份有限公司 | Automatic-calibration static test system and calibration method and test method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114035416A (en) * | 2021-10-21 | 2022-02-11 | 山东省计量科学研究院 | Method for measuring and calibrating emergency time of detector of fire-fighting emergency lighting lamp |
| CN114035416B (en) * | 2021-10-21 | 2023-01-13 | 山东省计量科学研究院 | Method for measuring and calibrating emergency time of detector of fire-fighting emergency lighting lamp |
| CN113985336A (en) * | 2021-10-27 | 2022-01-28 | 贵州航天计量测试技术研究所 | Charging and discharging time calibration device and method for battery charging and discharging test system |
| CN115219974A (en) * | 2022-09-15 | 2022-10-21 | 快克智能装备股份有限公司 | Automatic-calibration static test system and calibration method and test method thereof |
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