CN204497715U - A kind of microcomputer protecting controller with heat sinking function - Google Patents
A kind of microcomputer protecting controller with heat sinking function Download PDFInfo
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- CN204497715U CN204497715U CN201520236443.0U CN201520236443U CN204497715U CN 204497715 U CN204497715 U CN 204497715U CN 201520236443 U CN201520236443 U CN 201520236443U CN 204497715 U CN204497715 U CN 204497715U
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Abstract
The utility model discloses a kind of microcomputer protecting controller with heat sinking function, solve the state how radiator fan ambient temperature is all in continuous firing, cause the problem of the waste of electric energy, its drip irrigation device is that testing circuit is coupled to power supply reception temperature signal, output detection signal; Comparison circuit is coupled to testing circuit and receives detection signal, exports comparison signal; Lasting drive circuit is coupled to comparison circuit and receives comparison signal, exports the keying that sustained control signals controls radiator fan; Intermittent driving circuit is coupled to comparison circuit and receives comparison signal; export the keying that interval control signal controls radiator fan; a kind of microcomputer protecting controller with heat sinking function of the present utility model; when ambient temperature is higher; radiator fan continuous firing is made, to reach the function of heat radiation, when temperature is reduced to certain value gradually by lasting drive circuit; radiator fan intermittent work is made, to reach energy-conservation function by intermittent driving circuit.
Description
Technical field
The utility model relates to a kind of microcomputer protecting controller, and more particularly, it relates to a kind of microcomputer protecting controller with heat sinking function.
Background technology
Microcomputer protecting controller does not go out chip single-chip microcomputer by high integration, bus, high-precision current voltage transformer, high insulation resistance export the parts such as auxiliary relay, high-reliability switch power module and form.For the economical protection of the one measured, control, protect, communication is integrated.
Hardware involved by microcomputer protecting device is all be integrated in a casing, limited due to box volume, the lifting of the own temperature of its each hardware inner, usually occur that wiring comes off, apparatus system is caused to be paralysed, so usually radiator fan can be arranged in the casing of microcomputer protecting device, to reach the effect of heat radiation, when ambient temperature is lower, then do not need radiator fan to open for a long time to dispel the heat, but owing to not arranging control circuit to control radiator fan, radiator fan is made to be in the state of continuous firing all the time, and then cause the waste of electric energy, so current used microcomputer protecting controller has the space of certain improvement.
Utility model content
For the deficiency that prior art exists; the purpose of this utility model is to provide a kind of microcomputer protecting controller with heat sinking function; make radiator fan when ambient temperature is lower can intermittent work to reach energy-conservation function, and when ambient temperature is higher can continuous firing to reach heat sinking function.
For achieving the above object, the utility model provides following technical scheme: a kind of microcomputer protecting controller with heat sinking function, comprising for controlling the switch of microcomputer protecting controller keying and the radiator fan for dispelling the heat, comprising testing circuit, comparison circuit, intermittent driving circuit and lasting drive circuit;
Whether described switch is coupled between testing circuit and comparison circuit, open to control testing circuit;
Described testing circuit is coupled to power supply to receive temperature signal, and output detection signal;
Described comparison circuit is coupled to testing circuit to receive detection signal, and exports comparison signal;
Described lasting drive circuit is coupled to comparison circuit to receive comparison signal, and exports sustained control signals to control the keying of radiator fan;
Described intermittent driving circuit is coupled to comparison circuit to receive comparison signal, and exports interval control signal to control the keying of radiator fan;
Described intermittent driving circuit comprises timing circuit, Time-delayed Feedback circuit and control circuit;
Described timing circuit is coupled to comparison circuit to receive comparison signal, and exports timing signal;
Described control circuit is coupled to timing circuit to receive timing signal, and exports control signal and work within the set time to control radiator fan;
One end of described Time-delayed Feedback circuit is coupled between timing circuit and comparison circuit, and the other end is coupled between control circuit and timing circuit;
When radiator fan is within the set time after end-of-job, control signal is fed back to timing circuit by Time-delayed Feedback circuit after time delay, again exports timing signal control radiator fan task again to make control circuit to make timing circuit.
Preferably, described timing circuit comprises 555 timing chips;
Second pin of described 555 timing chips is coupled to comparison circuit to receive comparison signal;
5th pin of described 555 timing chips is coupled to control circuit to export timing signal;
One end of described Time-delayed Feedback circuit and the 5th pin of 555 timing chips couple, and the second pin of the other end and 555 timing chips couples.
Preferably, described Time-delayed Feedback circuit comprise current-limiting resistance, delay capacitor and or door;
One end of described current-limiting resistance is coupled to or the input of door, and the other end is coupled between control circuit and timing circuit;
One end of described delay capacitor be coupled to current-limiting resistance and or door input between, other end ground connection;
The output of described comparison circuit is coupled to or another input of door, and output that is described or door is coupled to timing circuit.
Preferably, described control circuit comprises the first switch element and the first executive component;
Described first switch element is coupled to timing circuit to receive timing signal, and exports make-and-break signal;
Described first executive component is coupled to the first switch element to receive make-and-break signal, and exports the first control signal to control radiator fan work.
Preferably, described lasting drive circuit comprises second switch element and the second executive component;
Described second switch element is coupled to comparison circuit to receive comparison signal, and exports make-and-break signal;
Described second executive component is coupled to second switch element to receive make-and-break signal, and exports the second control signal to control radiator fan work.
Preferably, described testing circuit comprises thermistor and divider resistance;
One end of described divider resistance is coupled to power supply, and the other end is coupled to ground connection after thermistor;
One end of described switch is coupled between divider resistance and thermistor, and the other end is coupled to comparison circuit.
Preferably, described comparison circuit comprises upper voltage limit comparing unit;
In-phase end on described upper voltage limit comparing unit is to receive detection signal, and the end of oppisite phase on described upper voltage limit comparing unit is connected with default upper limit reference voltage, and the output of described upper voltage limit comparing unit exports comparison signal.
The utility model hinge structure is compared to be had: when ambient temperature is higher, radiator fan continuous firing is made by lasting drive circuit, to reach the function of heat radiation, when temperature is reduced to certain value gradually, radiator fan intermittent work is made, to reach energy-conservation function by intermittent driving circuit.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is circuit diagram of the present utility model.
In figure: 1, testing circuit; 2, comparison circuit; 3, intermittent driving circuit; 31, timing circuit; 32, Time-delayed Feedback circuit; 33, control circuit; 4, drive circuit is continued.
Embodiment
Shown in Fig. 1, embodiment is described further.
A kind of microcomputer protecting controller with heat sinking function disclosed in the utility model, comprise for controlling the K switch 1 of microcomputer protecting controller keying and the radiator fan for dispelling the heat, comprise testing circuit 1, comparison circuit 2, intermittent driving circuit 3 and lasting drive circuit 4, switch is coupled between testing circuit 1 and comparison circuit 2, whether open to control testing circuit 1, testing circuit 1 is coupled to power supply to receive temperature signal, and output detection signal, comparison circuit 2 is coupled to testing circuit 1 to receive detection signal, and export comparison signal, continue drive circuit 4 and be coupled to comparison circuit 2 to receive comparison signal, and export sustained control signals to control the keying of radiator fan, intermittent driving circuit 3 is coupled to comparison circuit 2 to receive comparison signal, and export interval control signal to control the keying of radiator fan, when ambient temperature is higher, radiator fan continuous firing is made by lasting drive circuit 4, to reach the function of heat radiation, when temperature is reduced to certain value gradually, radiator fan intermittent work is made by intermittent driving circuit 3, to reach energy-conservation function.
Testing circuit 1 comprises thermistor RT and divider resistance R2, one end of divider resistance R2 is coupled to power supply, the other end is coupled to ground connection after thermistor RT, one end of K switch 1 is coupled between divider resistance R2 and thermistor RT, the other end is coupled to comparison circuit 2, thermistor RT is preferably the thermistor of positive temperature coefficient, namely when the temperature in the external world becomes large, the resistance of the thermistor of positive temperature coefficient increases, when the temperature in the external world reduces, the resistance of the thermistor of positive temperature coefficient reduces.
Comparison circuit 2 comprises upper voltage limit comparing unit, upper voltage limit comparing unit is preferably the comparator of LM393A model, in-phase end on upper voltage limit comparing unit is to receive detection signal, end of oppisite phase on upper voltage limit comparing unit is connected with default upper limit reference voltage V ref, upper limit reference voltage V ref is arranged by resistance R1, and the output of upper voltage limit comparing unit exports comparison signal.
Intermittent driving circuit 3 comprises timing circuit 31, Time-delayed Feedback circuit 32 and control circuit 33, timing circuit 31 is coupled to comparison circuit 2 to receive comparison signal, and export timing signal, control circuit 33 is coupled to timing circuit 31 to receive timing signal, and export control signal and work within the set time to control radiator fan, one end of Time-delayed Feedback circuit 32 is coupled between timing circuit 31 and comparison circuit 2, the other end is coupled between control circuit 33 and timing circuit 31, when radiator fan is within the set time after end-of-job, control signal is fed back to timing circuit 31 by Time-delayed Feedback circuit 32 after time delay, again export timing signal to make timing circuit 31 and control radiator fan task again to make control circuit 33.
Timing circuit 31 comprises 555 timing chips, 555 timing chips comprise peripheral circuit, this peripheral circuit is prior art therefore does not describe in detail, second pin of 555 timing chips is coupled to comparison circuit 2 to receive comparison signal, 5th pin of 555 timing chips is coupled to control circuit 33 to export timing signal, one end of Time-delayed Feedback circuit 32 and the 5th pin of 555 timing chips couple, second pin of the other end and 555 timing chips couples, 555 timing chips are that trailing edge goes out Power Generation Road simultaneously, namely there is a trailing edge, 555 timing chips will be triggered, the 3rd pin is made to export the high level of certain hour.
Time-delayed Feedback circuit 32 comprises current-limiting resistance R8, delay capacitor C1 and or door, one end of current-limiting resistance R8 is coupled to or the input of door, the other end is coupled between control circuit 33 and timing circuit 31, one end of delay capacitor be coupled to current-limiting resistance R8 and or door input between, other end ground connection, the output of comparison circuit 2 is coupled to or another input of door, or the output of door is coupled to timing circuit 31, current-limiting resistance R8 and delay capacitor C1 forms RC delay circuit, to make when the control signal that 555 timing chips export transfers low level to from high level, Time-delayed Feedback can be carried out by RC delay circuit, simultaneously by or the setting of door, make when temperature is reduced to certain value gradually, the output of comparison circuit 2 transfers low level to by high level, the change of this level is input to or an input of door, owing to connecting the output of 555 timing chips after another input connection RC delay circuit, low level is owing to there is no output, thus make or the level state of the level state that exports and comparison circuit 2, 555 timing chips are made to receive the triggering signal of a trailing edge, 555 timing chip work, and then control control circuit 33 works, after timing terminates, the level state of the 3rd pin of 555 timing chips has high level to transfer low level to, time delay is carried out by RC delay circuit, say that this level state is input to or in door, the level exported due to comparison circuit 2 is always low level, thus make 555 timing chips again receive the starting signal of a trailing edge, again start, circulate with this, reach the function of radiator fan intermittent work.
Control circuit 33 comprises the first switch element and the first executive component, first switch element is preferably the triode Q1 of positive-negative-positive, first executive component is preferably relay K M1, first switch element is coupled to timing circuit 31 to receive timing signal, and export make-and-break signal, first executive component is coupled to the first switch element to receive make-and-break signal, and export the first control signal to control radiator fan work, the base stage of triode Q1 is coupled to the 3rd pin of 555 timing chips to receive timing signal, and export make-and-break signal, power supply is connected after the collector electrode of triode Q1 is coupled with the coil of relay K M1, executive component is parallel with sustained diode 1, electricity when power-off in coil can be consumed by sustained diode 1, the grounded emitter of triode Q1, the normally opened contact of relay K M1 is coupled to radiator fan and opens and closes to control it.
Continue drive circuit 4 and comprise second switch element and the second executive component, second switch element is preferably the triode Q2 of positive-negative-positive, second executive component is preferably relay K M2, , second switch element is coupled to comparison circuit 2 to receive comparison signal, and export make-and-break signal, second executive component is coupled to second switch element to receive make-and-break signal, and export the second control signal to control radiator fan work, comparison circuit 2 is connected to receive comparison signal after the base stage of triode Q2 is coupled to resistance R6, and export make-and-break signal, one end of resistance R3 is connected between base stage and resistance R6, other end ground connection, power supply is connected to after the collector electrode of triode Q2 is coupled with the coil of relay K M2, second executive component is parallel with sustained diode 2, electricity when power-off in coil can be consumed by sustained diode 2, the grounded emitter of triode Q2, the normally opened contact of relay K M2 is coupled to radiator fan and opens and closes to control it.
When ambient temperature is higher, by K switch 1, heat sinking function is opened, by by the thermistor RT in testing circuit 1 to external world temperature detect, because ambient temperature is higher, then make the resistance of thermistor RT higher, the voltage then got is larger, and be greater than upper limit reference voltage V ref, thus make upper voltage limit comparing unit export high level, because 555 timing chips are that trailing edge triggers, thus make triode Q1 not conducting, intermittent driving circuit 3 does not work, and triode Q2 conducting, continue drive circuit 4 to work, relay K M2 conducting, the normally opened contact Closed control radiator fan of relay K M2 works all the time, to reach the function of heat radiation, by the lasting heat radiation of radiator fan, the temperature of microcomputer protecting controller is reduced, the resistance of thermistor RT also reduces, the voltage then got also reduces, until be less than upper limit reference voltage V ref, thus make upper voltage limit comparing unit output low level, thus make triode Q2 not conducting, continue drive circuit 4 not work, low level is become from high level because upper voltage limit comparing unit exports, form a trailing edge, and then 555 timing chips are triggered, thus control triode Q1 conducting, relay K M1 conducting, the normally opened contact Closed control radiator fan work of relay K M1, until setting time terminate after, radiator fan quits work, by Time-delayed Feedback circuit 32, a trailing edge is input to after time delay the second pin of 555 timing chips again, make 555 timing chips task again, and then form the intermittent work of radiator fan, to reach energy-conservation function.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. one kind has the microcomputer protecting controller of heat sinking function, comprising for controlling the switch of microcomputer protecting controller keying and the radiator fan for dispelling the heat, it is characterized in that: comprise testing circuit, comparison circuit, intermittent driving circuit and lasting drive circuit;
Whether described switch is coupled between testing circuit and comparison circuit, open to control testing circuit;
Described testing circuit is coupled to power supply to receive temperature signal, and output detection signal;
Described comparison circuit is coupled to testing circuit to receive detection signal, and exports comparison signal;
Described lasting drive circuit is coupled to comparison circuit to receive comparison signal, and exports sustained control signals to control the keying of radiator fan;
Described intermittent driving circuit is coupled to comparison circuit to receive comparison signal, and exports interval control signal to control the keying of radiator fan;
Described intermittent driving circuit comprises timing circuit, Time-delayed Feedback circuit and control circuit;
Described timing circuit is coupled to comparison circuit to receive comparison signal, and exports timing signal;
Described control circuit is coupled to timing circuit to receive timing signal, and exports control signal and work within the set time to control radiator fan;
One end of described Time-delayed Feedback circuit is coupled between timing circuit and comparison circuit, and the other end is coupled between control circuit and timing circuit;
When radiator fan is within the set time after end-of-job, control signal is fed back to timing circuit by Time-delayed Feedback circuit after time delay, again exports timing signal control radiator fan task again to make control circuit to make timing circuit.
2. a kind of microcomputer protecting controller with heat sinking function according to claim 1, is characterized in that: described timing circuit comprises 555 timing chips;
Second pin of described 555 timing chips is coupled to comparison circuit to receive comparison signal;
5th pin of described 555 timing chips is coupled to control circuit to export timing signal;
One end of described Time-delayed Feedback circuit and the 5th pin of 555 timing chips couple, and the second pin of the other end and 555 timing chips couples.
3. a kind of microcomputer protecting controller with heat sinking function according to claim 2, is characterized in that: described Time-delayed Feedback circuit comprise current-limiting resistance, delay capacitor and or door;
One end of described current-limiting resistance is coupled to or the input of door, and the other end is coupled between control circuit and timing circuit;
One end of described delay capacitor be coupled to current-limiting resistance and or door input between, other end ground connection;
The output of described comparison circuit is coupled to or another input of door, and output that is described or door is coupled to timing circuit.
4. a kind of microcomputer protecting controller with heat sinking function according to claim 1 or 3, is characterized in that: described control circuit comprises the first switch element and the first executive component;
Described first switch element is coupled to timing circuit to receive timing signal, and exports make-and-break signal;
Described first executive component is coupled to the first switch element to receive make-and-break signal, and exports the first control signal to control radiator fan work.
5. a kind of microcomputer protecting controller with heat sinking function according to claim 1, is characterized in that: described lasting drive circuit comprises second switch element and the second executive component;
Described second switch element is coupled to comparison circuit to receive comparison signal, and exports make-and-break signal;
Described second executive component is coupled to second switch element to receive make-and-break signal, and exports the second control signal to control radiator fan work.
6. the microcomputer protecting controller with heat sinking function according to claim 1, is characterized in that: described testing circuit comprises thermistor and divider resistance;
One end of described divider resistance is coupled to power supply, and the other end is coupled to ground connection after thermistor;
One end of described switch is coupled between divider resistance and thermistor, and the other end is coupled to comparison circuit.
7. the microcomputer protecting controller with heat sinking function according to claim 1, is characterized in that: described comparison circuit comprises upper voltage limit comparing unit;
In-phase end on described upper voltage limit comparing unit is to receive detection signal, and the end of oppisite phase on described upper voltage limit comparing unit is connected with default upper limit reference voltage, and the output of described upper voltage limit comparing unit exports comparison signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520236443.0U CN204497715U (en) | 2015-04-17 | 2015-04-17 | A kind of microcomputer protecting controller with heat sinking function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520236443.0U CN204497715U (en) | 2015-04-17 | 2015-04-17 | A kind of microcomputer protecting controller with heat sinking function |
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| CN204497715U true CN204497715U (en) | 2015-07-22 |
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| CN201520236443.0U Expired - Fee Related CN204497715U (en) | 2015-04-17 | 2015-04-17 | A kind of microcomputer protecting controller with heat sinking function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894884A (en) * | 2020-07-10 | 2020-11-06 | 上海沪工焊接集团股份有限公司 | Fan control method suitable for arc welding power supply, storage medium and arc welding power supply |
| CN112108743A (en) * | 2020-08-27 | 2020-12-22 | 上海沪工焊接集团股份有限公司 | Thermal protection control method for controlling internal temperature of arc welding power supply |
-
2015
- 2015-04-17 CN CN201520236443.0U patent/CN204497715U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894884A (en) * | 2020-07-10 | 2020-11-06 | 上海沪工焊接集团股份有限公司 | Fan control method suitable for arc welding power supply, storage medium and arc welding power supply |
| CN111894884B (en) * | 2020-07-10 | 2023-11-03 | 上海沪工焊接集团股份有限公司 | Fan control method suitable for arc welding power supply, storage medium and arc welding power supply |
| CN112108743A (en) * | 2020-08-27 | 2020-12-22 | 上海沪工焊接集团股份有限公司 | Thermal protection control method for controlling internal temperature of arc welding power supply |
| CN112108743B (en) * | 2020-08-27 | 2024-01-05 | 上海沪工焊接集团股份有限公司 | Thermal protection control method for controlling internal temperature of arc welding power supply |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20160417 |
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| CF01 | Termination of patent right due to non-payment of annual fee |