CN206557547U - Relay actuation time test circuit - Google Patents
Relay actuation time test circuit Download PDFInfo
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- CN206557547U CN206557547U CN201720096197.2U CN201720096197U CN206557547U CN 206557547 U CN206557547 U CN 206557547U CN 201720096197 U CN201720096197 U CN 201720096197U CN 206557547 U CN206557547 U CN 206557547U
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Abstract
The utility model discloses a kind of relay actuation time test circuit, for testing the pull up time in intelligent capacitor；Including：Relay contact interface circuit, couples with the contact switch of relay to be measured, with the on off operating mode for the contact switch for detecting relay to be measured, and exports corresponding actuating signal；Relay coil interface circuit, including energization pins and some group relay coil input pins；Relay on-off detects circuit, with some groups of detection ports, and detects that port is coupled one by one with relay coil input pin；Relay on-off detection circuit is used to export corresponding relay on-off signal according to the input signal of each group of detection port；MCU control circuit, is coupled with serial communication circuit, and MCU control circuit is coupled by the master controller of serial communication circuit and intelligent capacitor.The utility model can be tested rapidly and accurately the pull up time in intelligent capacitor.
Description
Technical field
The utility model belongs to intelligent capacitor manufacture field, more specifically, it relates to a kind of relay actuation time
Test circuit.
Background technology
Intelligent capacitor is a kind of integrated modern test and control, power electronics, network communication, Automated condtrol, power capacitor
The intelligent powerless compensation device being integrated etc. advanced technology.At present, the intelligent capacitor of in the market, it includes housing and is located at shell
Internal intraware, the intraware includes capacitor, intelligent measure and control module, combination switch, route protection module and people
Machine interface module.This intelligent capacitor, can realize that parameter detecting, the operating passing zero for automatically controlling or controlling manually, intelligence are protected
The multiple functions such as shield, human-computer dialogue.
Above-mentioned combination switch is typically made up of relay and corresponding drive circuit, alternatively referred to as relay switching electricity
Road, the voltage being mainly used in civil power pressed through for zero moment, by drive circuit come the contact switch adhesive of control relay, will
Capacitor puts into power network.
Because relay must be closed in line voltage zero passage, relay damaged otherwise can be caused.And relay has
There is certain actuation time, therefore, intelligent capacitor needs the zero crossing according to line voltage, and control relay is acted in advance
（Lead is pull up time）.So, for the test of pull up time, have great importance.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of relay actuation time test
Circuit, rapidly and accurately can be tested the pull up time in intelligent capacitor.
To achieve the above object, the utility model provides following technical scheme：
A kind of relay actuation time test circuit, for being surveyed to the pull up time in intelligent capacitor
Examination；Including：
Relay contact interface circuit, is coupled with the contact switch of relay to be measured, to detect the contact of relay to be measured
State is switched on-off, and exports corresponding actuating signal；
Relay coil interface circuit, including energization pins and some group relay coil input pins；Wherein, it is described
Energization pins are used to power to intelligent capacitor, and the relay coil input pin is used for two with the coil of relay to be measured
End coupling；
Relay on-off detects circuit, with some groups of detection ports, and the detection port and the relay coil
Input pin is coupled one by one；The relay on-off detection circuit is used to export phase according to the input signal of each group of detection port
The relay on-off signal answered；
MCU control circuit, is coupled with serial communication circuit, the MCU control circuit by the serial communication circuit with
The master controller coupling of the intelligent capacitor, to send test command to the master controller；Wherein, the master controller rings
The corresponding relay on/off to be measured of test command control described in Ying Yu.
Preferably, the relay contact interface circuit includes first interface, photo-coupler, first resistor and the second electricity
Resistance；Wherein, the first interface has two terminals, and one of terminals are coupled to 12V voltages, another terminals
1 pin of photo-coupler is coupled to after being connected with first resistor；The 2 pin ground connection of the photo-coupler, 3 pin ground connection, 4 pin and the second electricity
VCC voltages are coupled to after resistance series connection；4 pin of the photo-coupler are further coupled to MCU control circuit.
Preferably, the relay on-off detection circuit includes some groups of voltage direction detection circuits, voltage direction detection
Circuit is coupled one by one with relay coil input pin, with the voltage direction for the coil for detecting corresponding relay to be measured, and root
Corresponding relay on-off signal is exported according to voltage direction.
Preferably, the voltage direction detection circuit includes first voltage comparator, second voltage comparator；Described first
Voltage comparator, the in-phase end of second voltage comparator are coupled to VCC voltages, and end of oppisite phase is coupled to group relay coil input
Pin.
Preferably, the serial communication circuit uses RS485 communicating circuits.
Compared with prior art, the utility model has the advantages that：1st, test data is accurate；2nd, can be to the master of intelligent capacitor
Circuit board is directly tested, without individually being tested relay.
Brief description of the drawings
Fig. 1 is the module principle figure of embodiment repeat circuit actuation time test circuit；
Fig. 2 is the circuit diagram of RS485 communicating circuits in embodiment；
Fig. 3 is the circuit diagram of embodiment repeat circuit contact interface circuit；
Fig. 4 is the circuit diagram of embodiment repeat circuit coil interface circuit；
Fig. 5 is the circuit diagram that embodiment repeat circuit break-make detects circuit.
Reference：100th, relay contact interface circuit；200th, RS485 communicating circuits；300th, relay coil interface
Circuit；400th, relay coil interface circuit；500th, relay on-off detection circuit.
Embodiment
With reference to embodiment and accompanying drawing, the utility model is described in further detail, but reality of the present utility model
The mode of applying is not limited only to this.
Reference picture 1, the present embodiment provides a kind of relay actuation time test circuit, in intelligent capacitor after
The actuation time of electrical equipment is tested；The intelligent capacitor includes some relays（Generally 4）.The test circuit includes
Relay contact interface circuit, relay coil interface circuit, relay on-off detection circuit, MCU control circuit and serial ports
Communicating circuit.In reference picture 2, the present embodiment, serial communication circuit uses RS485 communicating circuits, and MCU control circuit passes through described
The master controller of RS485 communicating circuits and intelligent capacitor is communicated（The master controller is equally coupled with RS485 communication electricity
Road, and it is coupled to interface J3）, ordered in this way, MCU control circuit can send corresponding test to the master controller of intelligent capacitor
Order.
Reference picture 1, Fig. 3, relay contact interface circuit include first interface J1, photo-coupler U1, first resistor R1 with
And second resistance R2；Wherein, first interface J1 has two terminals（1、2）, and one of terminals are coupled to 12V electricity
Pressure, another terminals are coupled to photo-coupler U1 1 pin after being connected with first resistor R1；Photo-coupler U1 2 pin ground connection, 3
Pin is grounded, and 4 pin are coupled to VCC voltages after being connected with second resistance R2；Photo-coupler U1 4 pin are further coupled to MCU control circuit.
Because the contact switch of all relays to be measured in intelligent capacitor is in parallel, therefore it may only be necessary to by first interface J1
Two terminals（1、2）The two ends of the contact switch of relay to be measured are respectively coupled to connecting wire.It can be seen that, when treating
When surveying the contact switch closure of relay, photo-coupler U1 1,2 pin conducting, and then the conducting of 3,4 pin so that 4 pin export low electricity
Flat KGIN signals；Conversely, when the contact switch of relay to be measured disconnects, photo-coupler U1 4 pin output high level
KGIN signals.MCU control circuit then judges the on off operating mode of relay to be measured according to the low and high level of KGIN signals.
Reference picture 1, Fig. 4, relay coil interface circuit include energization pins（9、10）And some group relay coils
Input pin（1~8）；Wherein, energization pins（9、10）18V voltages and earth terminal GND are respectively coupled to, for intelligent capacitor
Device is powered（When testing intelligent capacitor, intelligent capacitor does not access power network）.Relay coil input pin（1~8）For
Coupled with the two ends of the coil of relay to be measured, wherein, 1,2 pin are a pair, that is, are respectively coupled to one of them relay to be measured
Coil two ends, 3,4 pin be a pair, be respectively coupled to the two ends of the coil of another relay to be measured, by that analogy.
Reference picture 1, Fig. 5, relay on-off detection circuit are included in some groups of voltage direction detection circuits, the present embodiment,
Illustrated using one of which voltage direction detection circuit as example, it includes first voltage comparator U3A, second voltage ratio
Compared with device U4A；Wherein, first voltage comparator U3A in-phase end is coupled to the Voltage Reference electricity being made up of resistance R8, resistance R9
Road, after end of oppisite phase is connected with resistance R22, is on the one hand coupled directly to 1 pin of relay coil interface circuit, on the other hand passes through
Resistance R12 is grounded；Similarly, second voltage comparator U4A in-phase end is coupled to the voltage being made up of resistance R10, resistance R11
Reference circuit, after end of oppisite phase is connected with resistance R26, is on the one hand coupled directly to 1 pin of relay coil interface circuit, the opposing party
Face is grounded by resistance R31.Therefore, voltage direction detects that the operation principle of circuit is, when the voltage of the coil of relay to be measured
Flow to for from high to low when（KA1 flows to KC1）, first voltage comparator U3A output voltage KZIN is low level, second voltage
Comparator U4A output voltage KZIN1 is high level；Conversely, when the voltage flow direction of the coil of relay to be measured is from low to high
When（KC1 flows to KA1）, first voltage comparator U3A output voltage KZIN is high level, and second voltage comparator U4A's is defeated
Go out voltage KZIN1 for low level；Voltage signal KZIN, KZIN1 are input to MCU control circuit, in this way, MCU control circuit is
Can be by judging voltage signal KZIN, KZIN1 low and high level, come the voltage direction of the coil that judges relay to be measured.Remaining
Voltage direction detection circuit theory it is identical, repeat no more.
Below, the process to relay contact analog control system is illustrated：
1st, MCU control circuit sends test command by serial ports to the master controller of intelligent capacitor（Including what is tested
Relay, type of action）, notify the relay to be tested of master controller, the relay that such as KA1, KC1 are connected；
If the 2, type of action is closure, master controller is received after test command, is treated accordingly by drive circuit control
The coil electricity of relay is surveyed, and voltage direction is KA1 to KC1（Relay to be measured is controlled to turn on）.Now MCU control circuit is stood
Receive voltage signal KZIN, KZIN1（Wherein KZIN is low, and KZIN1 is height）, and judge that now relay to be measured will make
Action for closure, start simultaneously at timing.If type of action is disconnects, master controller is by drive circuit control voltage direction
KC1 to KA1.Now MCU control circuit immediately receives voltage signal KZIN, KZIN1（Wherein KZIN is height, and KZIN1 is low）,
And judge that the now action to be made of relay to be measured is disconnection, start simultaneously at timing.
3rd, after the contact switch closure of relay to be measured or disconnection, MCU control circuit receives low level or high level
KGIN signals, and stop timing immediately, then current timing time, when the closing time of relay as to be measured or disconnection
Between.
Claims (5)
1. a kind of relay actuation time test circuit, for being surveyed to the pull up time in intelligent capacitor
Examination；It is characterized in that, including：
Relay contact interface circuit, is coupled with the contact switch of relay to be measured, to detect the contact switch of relay to be measured
On off operating mode, and export corresponding actuating signal；
Relay coil interface circuit, including energization pins and some group relay coil input pins；Wherein, the power supply
Pin is used to power to intelligent capacitor, and the relay coil input pin is used for the two ends coupling with the coil of relay to be measured
Connect；
Relay on-off detects circuit, with some groups of detection ports, and the detection port is inputted with the relay coil
Pin is coupled one by one；The relay on-off detection circuit is used to export corresponding according to the input signal of each group of detection port
Relay on-off signal；
MCU control circuit, is coupled with serial communication circuit, the MCU control circuit by the serial communication circuit with it is described
The master controller coupling of intelligent capacitor, to send test command to the master controller；Wherein, the master controller in response to
The corresponding relay on/off to be measured of test command control.
2. relay actuation time test circuit according to claim 1, it is characterized in that, the relay contact interface electricity
Road includes first interface, photo-coupler, first resistor and second resistance；Wherein, the first interface has two terminals,
And one of terminals are coupled to 12V voltages, another terminals is coupled to the 1 of photo-coupler after being connected with first resistor
Pin；The 2 pin ground connection of the photo-coupler, 3 pin ground connection, 4 pin are coupled to VCC voltages after being connected with second resistance；The optical coupling
4 pin of device are further coupled to MCU control circuit.
3. relay actuation time test circuit according to claim 1, it is characterized in that, the relay on-off detection electricity
Road includes some groups of voltage direction detection circuits, and voltage direction detection circuit is coupled one by one with relay coil input pin, with
The voltage direction of the coil of corresponding relay to be measured is detected, and corresponding relay on-off signal is exported according to voltage direction.
4. relay actuation time test circuit according to claim 3, it is characterized in that, the voltage direction detects circuit
Including first voltage comparator, second voltage comparator；The in-phase end coupling of the first voltage comparator, second voltage comparator
VCC voltages are connected to, end of oppisite phase is coupled to a group relay coil input pin.
5. relay actuation time test circuit according to claim 1, it is characterized in that, the serial communication circuit is used
RS485 communicating circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720096197.2U CN206557547U (en) | 2017-01-22 | 2017-01-22 | Relay actuation time test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720096197.2U CN206557547U (en) | 2017-01-22 | 2017-01-22 | Relay actuation time test circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206557547U true CN206557547U (en) | 2017-10-13 |
Family
ID=60010555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720096197.2U Active CN206557547U (en) | 2017-01-22 | 2017-01-22 | Relay actuation time test circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN206557547U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082905A1 (en) * | 2020-06-01 | 2021-05-06 | 龚柱 | Method for collecting and determining contact switching times for two-power supply transfer switch and apparatus for same |
| CN117007959A (en) * | 2023-09-27 | 2023-11-07 | 四川虹锐电工有限责任公司 | Relay action response time test system |
-
2017
- 2017-01-22 CN CN201720096197.2U patent/CN206557547U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082905A1 (en) * | 2020-06-01 | 2021-05-06 | 龚柱 | Method for collecting and determining contact switching times for two-power supply transfer switch and apparatus for same |
| GB2600276A (en) * | 2020-06-01 | 2022-04-27 | Quanzhou Ruilang Mechanical & Electrical Tech Co Ltd | Method for collecting and determining contact switching times for two-power supply transfer switch and apparatus for same |
| CN117007959A (en) * | 2023-09-27 | 2023-11-07 | 四川虹锐电工有限责任公司 | Relay action response time test system |
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