CN209642298U - A kind of secondary overvoltage protective device of voltage ageing equipment - Google Patents
A kind of secondary overvoltage protective device of voltage ageing equipment Download PDFInfo
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- CN209642298U CN209642298U CN201920579243.3U CN201920579243U CN209642298U CN 209642298 U CN209642298 U CN 209642298U CN 201920579243 U CN201920579243 U CN 201920579243U CN 209642298 U CN209642298 U CN 209642298U
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Abstract
A kind of secondary overvoltage protective device of voltage ageing equipment, the scope of application can be improved in it, meet the demand of the real-time overvoltage protection of aging equipment, the input terminal of its voltage monitoring module is connect with the voltage source anode of voltage ageing equipment, voltage monitoring module includes resistance R1, R2, one end of resistance R1 is separately connected the anode of voltage source, 2 port of switch terminals of relay K1, the other end of resistance R1 is separately connected one end of resistance R2, 1 port of positive input of voltage comparator U2, the other end of resistance R2 is grounded, the output end of 2 port of the reverse input end connection data processor U1 of voltage comparator U2, one end of the 3 port connection switch driver U3 of output end of voltage comparator U2, the other end of switch driver U3 is separately connected the 4 of the coil of relay K1, 5 ports, the 1 of relay Port connects the cathode of the voltage source of voltage ageing equipment, and data processor U1 includes reference voltage module, and reference voltage module is for setting reference voltage.
Description
Technical field
The utility model relates to voltage ageing equipment technical field, specially a kind of voltage ageing equipment secondary overvoltage protection dress
It sets.
Background technique
Electronic component and module are the bases of various complete electronic set equipment, for the reliability for improving complete machine, are usually required that
Key components and module used need to carry out the power-up aging of long period after production under certain temperature environment,
Guarantee the component filtered out and module reliability with higher.In aging equipment, due to being aging for a secondary aging
Part is more, and the aging electrical power quantity of use is more, and power failure may lead electric power output voltage and over-voltage occurs.
Although power source internal has an over-pressure safety device, it is also possible that internal overvoltage protection also loses function when power failure
Can, it at this moment will damage the component being aging or module.To prevent such consequence, aging equipment is needed to export with power supply
The secondary overvoltage protective device at end, to greatly improve the safety of aging equipment.
But in the prior art, aging equipment generallys use the over-voltage protection element of fixed protection voltage value, is applicable in
Range is relatively narrow, can not be applicable to the adjustable aging demand of voltage protection value.It is existing that another technique provides a kind of uses
Process control voltage measuring apparatus directly reads the voltage value of voltage source, further according to protection voltage threshold value to the voltage value of power supply
It is adjusted, this over-pressure safety device is an overvoltage protection, and need to adjust is the voltage value of power supply, it is therefore desirable to be become
The adjusting that voltage source is just able to achieve voltage source voltage value is changed, complicated operation for adjusting, and the process of its software operation needs one
The fixed time is not able to satisfy the demand of the real-time overvoltage protection of aging equipment.
Utility model content
For overvoltage is also easy to produce inside aging equipment existing in the prior art, lead to the component being aging or module
The technical issues of damage, the over-voltage protection element of existing aging equipment is not able to satisfy the real-time overvoltage protection of aging equipment, this
Utility model provides a kind of secondary overvoltage protective device of voltage ageing equipment, applied widely, can meet aging equipment
The demand of real-time overvoltage protection.
A kind of secondary overvoltage protective device of voltage ageing equipment comprising voltage monitoring module, the voltage monitoring module
Input terminal connect with the voltage source anode of voltage ageing equipment, which is characterized in that the voltage monitoring module include resistance R1,
R2, one end of the resistance R1 are separately connected 2 port of switch terminals of the anode of the voltage source, relay K1, the resistance R1
The other end be separately connected 1 port of positive input of one end of resistance R2, voltage comparator U2, the other end of the resistance R2
Ground connection, the output end of 2 port of the reverse input end connection data processor U1 of the voltage comparator U2, the voltage comparator
One end of the 3 port connection switch driver U3 of output end of U2, the other end of the switch driver U3 be separately connected it is described after
4,5 ports of the coil of electric appliance K1,1 port of the relay connects the cathode of the voltage source of the voltage ageing equipment, described
3 port of switch terminals of relay K1 is set to the coil-end of the relay K1；The data processor U1 includes reference voltage
Module, the reference voltage module is for setting reference voltage.
It is further characterized by the output end of the reference voltage module is by communication line with analog-digital converter U4's
Input terminal connection, the output end of the analog-digital converter U4 connect 2 port of reverse input end of the voltage comparator U2；
The switch driver U3 is logic level switch.
Using the above structure of the utility model, resistance R1, R2 in voltage monitoring module constitute bleeder circuit, partial pressure electricity
Road output voltage is the voltage source measurement voltage of aging equipment；Reference voltage value is set by reference voltage module, realizes electricity
The adjusting for pressing protection value, by the voltage and reference voltage value of the voltage source of the comparator U2 voltage ageing equipment relatively measured, when
Voltage source voltage be higher than reference voltage value when, comparator U2 output level can invert immediately, make switch driver U3 driving after
Electric appliance K1 disconnects power supply line connection, to disconnect the voltage source of voltage ageing equipment, reaches to the real-time overvoltage protection for being aging part
Purpose.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model；
Fig. 2 is the modular structure block diagram of the utility model.
Specific embodiment
See Fig. 1, Fig. 2, a kind of secondary overvoltage protective device of voltage ageing equipment comprising voltage monitoring module 1, voltage prison
The input terminal for surveying module 1 is connect with 2 anode of voltage source of voltage ageing equipment, which is characterized in that voltage monitoring module 1 includes resistance
R1, R2, one end of resistance R1 are separately connected 2 port of switch terminals of the anode of voltage source 2, relay K1, the other end of resistance R1
It is separately connected one end of resistance R2,1 port of positive input of voltage comparator U2, the other end ground connection of resistance R2, voltage ratio
The output end of 2 port of reverse input end connection data processor U1 compared with device U2,3 port of the output end connection of voltage comparator U2
One end of switch driver U3, the other end of switch driver U3 are separately connected the 4 of the coil of relay K1,5 ports, relay
1 port connection voltage ageing equipment voltage source 2 cathode, 3 port of switch terminals of relay K1 is set to the line of relay K1
Enclose end；Data processor U1 includes reference voltage module 3.
The output end of reference voltage module 3 is connect by communication line 4 with the input terminal of analog-digital converter U4, analog-to-digital conversion
2 port of reverse input end of the output end connection voltage comparator U2 of device U4；
The prior art can be used in data processor U1, voltage comparator U2, and data processor U1 is electricity in the present embodiment
The cpu controller of brain, voltage comparator U2 are operational amplifier, the model of operational amplifier are as follows: TLV3701ID；
Switch driver U3 is logic level switch, and the prior art can be used in switch driver U3, first with computer setting one
A protection voltage value, protection voltage value can be according to the need being placed in inside voltage ageing equipment component to be heated and modules
Setting is adjusted in protection voltage value, and the program of computer setting protection voltage value can be implemented by using the prior art, reference voltage mould
The exportable corresponding reference voltage of the voltage output end of block 3.
That the specific working principle is as follows is described for it: having resistance R1, R2 of certain resistance value ratio to connect by two, constitutes voltage point
Volt circuit passes through voltage due to the anode of the voltage source 2 of the input terminal connection voltage ageing equipment of voltage branch circuit
Circuit can divide the output voltage of the voltage source 2 of voltage ageing equipment, and the forward direction that the output voltage is input to comparator U2 is defeated
Enter 1 port of end；It, can by the reference voltage module 3 in data processor U1 simultaneously according to the protection voltage value for being aging module
Reference voltage of the reference voltage threshold as comparator U2 is set, realizes and protects voltage value adjustable, pass through analog-digital converter U4
Analog-to-digital conversion carried out to the reference voltage of setting, and the digital signal after conversion is input to comparator U2, reference voltage with set
Fixed voltage source 2 protects the ratio of voltage value, the voltage value and 2 actual voltage value of voltage source with the partial pressure output of bleeder circuit
Ratio is identical, is compared by comparator U2 to 2 voltage of voltage source and reference voltage, when 2 voltage of voltage source is less than benchmark electricity
When pressure value, the level of comparator U1 output will not be such that switch driver U3 driving relay K1 disconnects, such as the present embodiment
When the output level of middle comparator U1 is high level, relay K1 is in connection status, i.e. 1 port of relay K1 and 2 ports
Connection, voltage ageing equipment are in normal operating condition, when 2 voltage of voltage source is greater than reference voltage value, the output of comparator U1
Level disconnects switch driver U3 driving relay K1, and the output level of comparator U1 is low level in this implementation, after
Electric appliance K1 is in power loss off-state, i.e. 1 port of relay K1 is connect with 3 ports, and voltage ageing equipment is in off-position, from
And achieve the purpose that the real-time overvoltage protection for being aging part.It can be for different specified protection electricity by reference voltage module 3
The voltage of the voltage ageing equipment of pressure carries out reference voltage adjustment and setting is met to improve the scope of application of the device
The adjustable aging needs of voltage protection value are needed, the flexibility that the voltage of the voltage protection is adjusted is substantially increased；And its
Without adjusting the output voltage of the voltage source 2 of aging equipment, the quilt of different protection voltage values can be met by a voltage source 2
The power demands of aging component or module no longer need to readjust or replace voltage source, to improve what the present apparatus used
Flexibility.
Claims (3)
1. a kind of secondary overvoltage protective device of voltage ageing equipment comprising voltage monitoring module, the voltage monitoring module
Input terminal is connect with the voltage source anode of voltage ageing equipment, which is characterized in that and the voltage monitoring module includes resistance R1, R2,
One end of the resistance R1 is separately connected 2 port of switch terminals of the anode of the voltage source, relay K1, and the resistance R1's is another
One end is separately connected 1 port of positive input of one end of resistance R2, voltage comparator U2, another termination of the resistance R2
Ground, the output end of 2 port of the reverse input end connection data processor U1 of the voltage comparator U2, the voltage comparator U2
3 port connection switch driver U3 of output end one end, the other end of the switch driver U3 is separately connected the relay
4,5 ports of the coil of device K1,1 port of the relay connect the cathode of the voltage source of the voltage ageing equipment, it is described after
3 port of switch terminals of electric appliance K1 is set to the coil-end of the relay K1；The data processor U1 includes reference voltage mould
Block.
2. a kind of secondary overvoltage protective device of voltage ageing equipment according to claim 1, which is characterized in that the benchmark
The output end of voltage module is connect by communication line with the input terminal of analog-digital converter U4, the output of the analog-digital converter U4
End connects 2 port of reverse input end of the voltage comparator U2.
3. according to claim 1 or a kind of 2 described in any item secondary overvoltage protective devices of voltage ageing equipment, feature exist
In the switch driver U3 is logic level switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920579243.3U CN209642298U (en) | 2019-04-26 | 2019-04-26 | A kind of secondary overvoltage protective device of voltage ageing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920579243.3U CN209642298U (en) | 2019-04-26 | 2019-04-26 | A kind of secondary overvoltage protective device of voltage ageing equipment |
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| CN209642298U true CN209642298U (en) | 2019-11-15 |
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| CN201920579243.3U Active CN209642298U (en) | 2019-04-26 | 2019-04-26 | A kind of secondary overvoltage protective device of voltage ageing equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036722A (en) * | 2019-12-24 | 2021-06-25 | 群光电能科技股份有限公司 | Voltage conversion device |
-
2019
- 2019-04-26 CN CN201920579243.3U patent/CN209642298U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036722A (en) * | 2019-12-24 | 2021-06-25 | 群光电能科技股份有限公司 | Voltage conversion device |
| CN113036722B (en) * | 2019-12-24 | 2024-03-12 | 群光电能科技股份有限公司 | Voltage conversion device |
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