CN206725118U - A kind of electromotor high-temperature early warning system - Google Patents
A kind of electromotor high-temperature early warning system Download PDFInfo
- Publication number
- CN206725118U CN206725118U CN201720399551.9U CN201720399551U CN206725118U CN 206725118 U CN206725118 U CN 206725118U CN 201720399551 U CN201720399551 U CN 201720399551U CN 206725118 U CN206725118 U CN 206725118U
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- coupled
- temperature
- output end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Protection Of Generators And Motors (AREA)
Abstract
The utility model discloses a kind of electromotor high-temperature early warning system, including：Temperature sensing circuit, including the first output end and the second output end, for induction machine temperature, and in the first output end and the second output end real time temperature signal；Signal processing circuit, is coupled to the first output end of temperature sensing circuit, including two output ends, and the temperature signal of two different times is exported respectively for receiving real time temperature signal, and in two output end；Subtraction circuit, two output ends of signal processing circuit are coupled to, for receiving two temperature signals and asking poor, to export temperature signal；Decision circuitry, the output end of subtraction circuit is coupled to, for receiving temperature signal, by temperature signal compared with reference signal, and exports judgement signal；Controller, the second output end of temperature sensing circuit and the output end of decision circuitry are coupled to, for receiving real time temperature signal and judging signal, and according to real time temperature signal with judging that signal is worked with controlled motor.
Description
Technical field
Temperature detection field is the utility model is related to, more specifically, it relates to a kind of electromotor high-temperature early warning system.
Background technology
During the operating of existing motor, often occur the situation of motor overheating, existing system for detecting temperature simply by
The temperature for examining motor judges whether motor overheats, but when system for detecting temperature detects that motor temperature is higher, motor is
Continuous high temperature heating longer time, motor are easily damaged.
Utility model content
In view of the deficienciess of the prior art, the utility model is to provide a kind of electromotor high-temperature early warning system, have
Larger rate temperature change can be directly detected before motor damage, reduces possibility of the motor because crossing cause thermal damage.
To achieve the above object, the utility model provides following technical scheme：A kind of electromotor high-temperature early warning system, bag
Include：Temperature sensing circuit, including the first output end and the second output end, for induction machine temperature, and in the first output end and
Second output end real time temperature signal；Signal processing circuit, is coupled to the first output end of temperature sensing circuit, including two defeated
Go out end, the temperature signal of two different times is exported respectively for receiving real time temperature signal, and in two output end；Subtraction
Circuit, two output ends of signal processing circuit are coupled to, for receiving two temperature signals and asking poor, to export temperature difference letter
Number；Decision circuitry, the output end of subtraction circuit is coupled to, for receiving temperature signal, by temperature signal and reference signal ratio
Compared with, and export judgement signal；Controller, the second output end of temperature sensing circuit and the output end of decision circuitry are coupled to, used
In reception real time temperature signal and judge signal, and according to real time temperature signal with judging that signal is worked with controlled motor.
By using above-mentioned technical proposal, temperature sensing circuit can detect the temperature of motor, and generate real time temperature letter
Number signal processing circuit and controller are transferred to respectively, signal processing circuit can receive real time temperature signal, and defeated at two
Go out the temperature signal at end two time points of output, then poor are asked to two temperature signals, to obtain temperature signal, the temperature difference letter of gained
Number it is the rate temperature change of motor at that time；When rate temperature change is larger, warm difference detecting circuit can export larger
Temperature signal, after decision circuitry receives temperature signal, by temperature signal compared with reference signal, when temperature signal is more than benchmark
During signal, judge that signal can export the judgement signal of high level, controller, which can receive, judges signal and controlled motor execution
Relevant action, can directly detect larger rate temperature change before motor damage, and reduction motor can because mistake cause thermal damage
Energy.
The utility model is further arranged to：The signal processing circuit includes control circuit, comprising two output ends, and
Replace output control signal in two output ends；Two sampling hold circuits, the sampling hold circuit include input, output
End and control terminal, the input of two sampling hold circuits is coupled to the output end of temperature sensing circuit, for receiving
Real time temperature signal, two output ends export real time temperature signal and keeping temperature signal respectively；Two samplings keep electricity
The control terminal on road is respectively coupled to two output ends of control circuit, and is controlled by control circuit.
By using above-mentioned technical proposal, when the control terminal of sampling hold circuit receives control signal, sampling is kept
The output end output real time temperature signal of circuit, when control terminal does not receive control signal, the output end of sampling hold circuit
Export keeping temperature signal；Because control circuit can interlock output control signal, the output end of two sampling hold circuits is handed over
For output real time temperature signal and keeping temperature signal, and two output ends of two holding circuits can export real-time temperature simultaneously
Signal and keeping temperature signal are spent, realizes the real-time detection of system.
The utility model is further arranged to：The control circuit is multi-resonant oscillating circuit, the multi-resonant oscillating circuit bag
The first triggers circuit is included, the first energy-storage travelling wave tube is included in first triggers circuit, for being charged to the first energy-storage travelling wave tube；Second
Triggers circuit, second triggers circuit is interior to include the second energy-storage travelling wave tube, for being charged to the second energy-storage travelling wave tube；First switch member
Part, the input of the first switching element are coupled to the first triggers circuit, and the control terminal of the first switching element is coupled to
Second triggers circuit, for discharging the first energy-storage travelling wave tube, and it is controlled by the second triggers circuit；Second switch element, described
The input of two switch elements is coupled to the second triggers circuit, and the control terminal of the second switch element is coupled to the first triggering electricity
Road, for discharging the second energy-storage travelling wave tube, and it is controlled by the first triggers circuit；The control terminal of the first switching element and second
The input of switch element is respectively coupled to the both ends of the second energy-storage travelling wave tube；The control terminal of the second switch element is opened with first
The input for closing element is respectively coupled to the both ends of the first energy-storage travelling wave tube.
By using above-mentioned technical proposal, after circuit turn-on, first switching element first turns on, the first energy-storage travelling wave tube
Backward voltage causes second switch element to end with voltage reversal, and the first energy-storage travelling wave tube constantly discharges, and the second energy-storage travelling wave tube is continuous
Charging, until the electric discharge of the first energy-storage travelling wave tube is completed, the control terminal of second switch element forms high-pressure opening, the second energy-storage travelling wave tube
Backward voltage causes first switching element to end with voltage reversal, and said process is reversed, electric current from first switching element with
The output end of second switch element alternately exports, and first switching element can replace output control signal with second switch element.
The utility model is further arranged to：The sampling hold circuit includes sample circuit, is coupled to temperature detection electricity
The output end on road, for receiving real time temperature signal；Holding circuit, the output end of the holding circuit are coupled to subtraction circuit
Input, the holding circuit is interior to include the energy-storage travelling wave tube for being used for keeping signal, by real time temperature signal or keeping temperature signal
Export to subtraction circuit；3rd switch element, described 3rd switch element one end are coupled to sample circuit, and the other end is coupled to guarantor
Circuit is held, the control terminal of the 3rd switch element is coupled to control circuit.
By using above-mentioned technical proposal, the control terminal of the 3rd switch element receives control signal, and sample circuit will be real
When temperature signal pass to holding circuit, after holding circuit receives real time temperature signal, output end output real time temperature letter
Number；When the control terminal of the 3rd switch element does not receive control signal, holding circuit keeps the voltage generation of output identical to protect
Temperature signal is held, and keeping temperature signal is exported in output end.
The utility model is further arranged to：The holding circuit includes voltage follower, the output end of voltage follower
The output end of decision circuitry is coupled in, the inverting input of the voltage follower is coupled to output end, in-phase input end coupling
In the 3rd switch element, in addition to holding capacitor, one end of the holding capacitor is grounded, the other end be coupled to voltage follower with
Tie point between 3rd switch element.
By using above-mentioned technical proposal, when holding circuit turns on sample circuit, while holding capacitor obtains electric, holding
The magnitude of voltage of electric capacity is identical with the input voltage size that holding circuit receives, and holding circuit can export real time temperature signal；
When holding circuit and sample circuit disconnect, the voltage of holding capacitor maintains the magnitude of voltage for disconnecting moment, and holding circuit receives
The magnitude of voltage arrived keeps constant, and real time temperature signal can be kept generation keeping temperature signal and exported by holding circuit.
The utility model is further arranged to：The decision circuitry includes reference circuit, for provide positive reference signal with
Negative reference signal；First decision circuitry, the output end of reference circuit is coupled to, for receiving temperature signal and positive reference signal,
When temperature signal is more than positive reference signal, signal is just judged with output；Second decision circuitry, it is coupled to the output of reference circuit
End, for receiving temperature signal and negative reference signal, when temperature signal is less than negative reference signal, to export negative judgement signal；
OR circuit, the output end of the first decision circuitry and the output end of the second decision circuitry are coupled to, just judge signal for receiving
With negative judgement signal, and ask or export and judge signal.
By using above-mentioned technical proposal, decision circuitry receives temperature signal, when temperature signal is more than positive reference signal,
First decision circuitry, which can export, just judges signal, and when temperature signal is less than negative reference signal, the second decision circuitry can export
Negative judgement signal, and when it is positive judge signal or negative judgement signal some for high level when, decision circuitry can export high level
Judge signal.
In summary, the utility model has the advantages that：Work as electrical fault, when temperature rapidly rises, temperature inspection
Slowdown monitoring circuit can export constantly increase temperature signal, and subtraction circuit can export larger temperature signal, now temperature signal
More than reference signal, judge that signal can export the judgement signal of high level, controller reception judges signal and controlled motor is held
Row relevant action, larger rate temperature change can be directly detected before motor damage, reduce motor because crossing cause thermal damage
May.
Brief description of the drawings
Fig. 1 is the circuit block diagram of the present embodiment；
Fig. 2 is the circuit diagram of controller in the present embodiment；
Fig. 3 is the circuit diagram of temperature sensing circuit in the present embodiment；
Fig. 4 is the circuit diagram of signal processing circuit and subtraction circuit in the present embodiment；
Fig. 5 is the circuit diagram of decision circuitry in the present embodiment；
Fig. 6 is the circuit diagram of voltage detecting circuit in the present embodiment；
Fig. 7 is the circuit diagram of current detection circuit in the present embodiment.
Reference：1st, controller；2nd, temperature sensing circuit；3rd, signal processing circuit；31st, control circuit；311st, first
Triggers circuit；312nd, the second triggers circuit；32nd, sampling hold circuit；321st, sample circuit；322nd, holding circuit；4th, subtraction electricity
Road；5th, decision circuitry；51st, reference circuit；52nd, the first decision circuitry；53rd, the second decision circuitry；55th, OR circuit；6th, voltage
Detect circuit；7th, current detection circuit.
Embodiment
The utility model is described further referring to figs. 1 to Fig. 7.
As depicted in figs. 1 and 2, a kind of electromotor high-temperature early warning system, including the control for starting and stopping for controlled motor
Device 1, controller 1 are the single-chip microcomputer of SFP200 models, and the input of controller 1 is coupled with temperature sensing circuit 2, temperature difference detection electricity
Road 2 includes the first output end and the second output end, and temperature sensing circuit 2 can detect the real time temperature of motor, and by motor
Real time temperature passes to controller 1 to protect motor；First output end of temperature sensing circuit 2 has been also coupled to signal processing circuit
3, signal processing circuit 3 can be used in exporting real time temperature signal and keeping temperature signal, and the output end of signal processing circuit 3 is also
Subtraction circuit 4 is coupled with, subtraction circuit 4 can receive real time temperature signal and keeping temperature signal and ask poor, output temperature difference letter
Number, the output end of subtraction circuit 4 is coupled with decision circuitry 5, for receiving temperature signal；Second output of temperature sensing circuit 2
End is coupled to controller 1, and for real time temperature signal to be passed into controller, voltage detecting circuit 6 has been also coupled on controller 1
With current detection circuit 7, controller 1 can be according to real time temperature signal with judging that signal is worked with controlled motor.
As shown in figure 3, temperature sensing circuit 2 is capable of the temperature of induction machine, and motor temperature is converted into real time temperature
Signal output；Temperature sensing circuit 2 includes the first resistor R1 and thermistor TH1 being connected in series, and thermistor R1's is another
End is coupled to+5V power supplys, thermistor TH1 other end ground connection, and thermistor TH1 resistance becomes with the change of motor temperature
Change, motor temperature is higher, and thermistor TH1 resistance is bigger；Temperature sensing circuit 2 includes the first output end and the second output
End, the first output end can export real time temperature signal with the second output end；Also include being connected in parallel in thermistor TH1 simultaneously
For protecting thermistor TH1 the first electric capacity C1.With reference to shown in Fig. 2, the first output end Y1 of temperature sensing circuit 2 is coupled to
20 ports of controller 1, for real time temperature signal to be passed into controller 1.
As shown in Figure 3 and Figure 4, the input of signal processing circuit 3 is coupled to the first output end of temperature sensing circuit 2,
For receiving the real time temperature signal of the output of temperature sensing circuit 2, real time temperature signal is carried out to keep generation keeping temperature letter
Number.
As shown in figure 4, signal processing circuit 3 includes a control circuit 31 and two are respectively coupled to 31 liang of control circuit
The sampling hold circuit 32 of individual output end；Control circuit 31 is multi-resonant oscillating circuit, and control circuit 31 includes the first triggers circuit
311 and second triggers circuit 312, the first triggers circuit 311 include being coupled to the second resistance R2 and 3rd resistor of+5V power supplys
R3,3rd resistor R3 resistance is adjustable, in addition to is connected across second resistance R2 and 3rd resistor R3 the second electric capacity C2, the second electricity
The capacitive reactance for holding C2 is adjustable；Second triggers circuit 312 includes being coupled to the 4th resistance R5 and the 5th resistance R5 of+5V power supplys, and the 4th
Resistance R5 resistance is adjustable, in addition to is connected across the 4th resistance R5 and the 5th resistance R5 the 3rd electric capacity C3, the 3rd electric capacity C3's
Capacitive reactance is adjustable.
Control circuit 31 also includes first switching element Q1 and opened with second switch element Q2, first switching element Q1 with second
It is triode or IGCT or FET to close element Q2, and the present embodiment chooses triode, the Q1 of first switching element current collection
Pole is coupled to second resistance R2 and the second electric capacity C2 tie point, first switching element Q1 base stage be coupled to the 4th resistance R5 with
3rd electric capacity C3 tie point；First switching element Q1 enables to the second electric capacity C2 to discharge, and first switching element Q1 is controlled
In the second triggers circuit 312.The Q2 of second switch element colelctor electrode is coupled to the 5th resistance R5 and the first electric capacity C2 connection
Point, second switch element Q2 base stage are coupled to 3rd resistor R3 and the second electric capacity C2 tie point；Second switch element Q2 energy
Enough so that the 3rd electric capacity C3 discharges, and second switch element Q2 is controlled by the first triggers circuit 311.
Electric motor starting moment, because first switching element Q1 and second switch element Q2 bulk properties can not possibly complete one
Cause, first switching element Q1 or second switch element Q2 can be introduced into conducting state；Assuming that now first switching element Q1 is first
Conducting, first switching element Q1 colelctor electrode produce electric current, and corresponding first switching element Q1 collector voltage declines rapidly, and
Due to containing the voltage reverse with the input terminal voltage identical of the first triggers circuit 311, second switch element in the second electric capacity C2
The Q2 terminal voltage that controls is 0V, second switch element Q2 cut-offs, the first switching element Q1 emitter stage can output signal, this is
First transient state of control circuit 31.
In first transient state, the second electric capacity C2 constantly discharges, and second switch element Q2 control terminal voltage constantly raises, until
Kwh loss is complete in second electric capacity C2, in the second electric capacity C2 discharge process, second switch element Q2 control terminal voltage
Constantly rise is until conducting；Simultaneously because second switch element Q2 ends, the 3rd electric capacity C3 constantly charges, until the 3rd electric capacity C3
Charging is complete, and in the 3rd electric capacity C5 charging process, first switching element Q1 control terminal voltage constantly declines until first
Switch element Q1 ends；Now, first switching element Q1 ends, second switch element Q2 conductings, the second switching element Q2 hair
Emitter-base bandgap grading can output signal, this is the second transient state of control circuit 31.
And above-mentioned first transient state and the second transient state can checker, first switching element Q1 emitter stage and second switch
Element Q2 emitter stage can replace output control signal, and two output ends of control circuit 31 can replace output control letter
Number.Alt time depends on the second electric capacity C2 and the 3rd electric capacity C3 discharge and recharge time, changes the second electric capacity C2, the 3rd electric capacity
C3, the resistance R5 of 3rd resistor 3 and the 4th size so that the time interval held time with adjacent control information of control signal
It can change.
Sampling hold circuit 32, sampling hold circuit 32 include a sample circuit 321 and a holding circuit 322, adopted
Sample circuit 321 and holding circuit 322 have been also coupled to a 3rd switch element Q3, and the 3rd switch element is triode or IGCT
Or FET, the present embodiment choose triode, the 3rd switch element Q3 colelctor electrode is coupled to the output of sample circuit 321
End, the 3rd switch element Q3 emitter stage are coupled to the output end of holding circuit 322, two the 3rd switch element Q3 base stage point
Two output ends of control circuit 31 are not coupled to, and are controlled by control circuit 31.
Sample circuit 321 is a voltage follower A1, and voltage follower A1 inverting input and output end couple, electricity
Pressure follower A1 in-phase input end is used to receive real time temperature signal；Holding circuit 322 is a voltage follower A2, voltage
Follower A2 inverting input couples with output end, and voltage follower A2 in-phase input end is coupled to the 3rd switch element Q3
Emitter stage, include holding capacitor C5, the holding capacitor C5 one end ground connection, the other end be coupled to voltage follower A2 with
Tie point between 3rd switch element Q3.
When sampling hold circuit 32 receives control signal, the 3rd switch element Q3 conductings, sample circuit 321 can incite somebody to action
The real time temperature signal received passes to holding circuit 322 by the 3rd switch element Q3, while holding capacitor C5 obtains electric, guarantor
Hold that electric capacity C5 magnitude of voltage is identical with the input voltage size that holding circuit 322 receives, and holding circuit 322 can export in real time
Temperature signal, i.e. sampling hold circuit 32 can export real time temperature signal；When sampling hold circuit 32 does not receive control letter
Number when, the 3rd switch element Q3 cut-offs, holding capacitor C5 voltage maintains the magnitude of voltage that the 3rd switch element Q3 disconnects moment,
The magnitude of voltage that holding circuit 322 receives keeps constant, and real time temperature signal can be kept generation to keep temperature by holding circuit 322
Degree signal simultaneously exports.
And because control circuit 32 replaces output control signal, two sampling hold circuits 32 can alternately export temperature in real time
Signal and keeping temperature signal are spent, and when an output end of control circuit 32 is real time temperature signal, another output end
As keeping temperature signal.
Subtraction circuit 4 includes the first divider resistance R6 and the second divider resistance R7, the first divider resistance R6 being connected in series
The other end be coupled to an output end of signal processing circuit 3, the second divider resistance R7 other end ground connection；Subtraction circuit 4
Including the 3rd divider resistance R8 being connected in series and the 4th divider resistance R9, the 3rd divider resistance R8 other end is coupled to signal
Another output end of process circuit 3；Subtraction circuit 4 also includes a first comparator A5, and first comparator A5's is anti-phase defeated
Enter the tie point that end is coupled to the first divider resistance R6 and the second divider resistance R7, first comparator A5 in-phase input end coupling
In the 3rd divider resistance R8 and the 4th divider resistance R9 tie point, the 4th divider resistance R9 other end is coupled to first and compared
Device A5 output end.Two inputs of subtraction circuit 4 are capable of the real time temperature signal of the output of reception signal process circuit 3 with protecting
Temperature signal is held, and by real time temperature signal and keeping temperature differential signal, subtraction circuit 4 can obtain temperature signal and defeated
Go out.
As shown in Figure 4 and Figure 5, decision circuitry 5 includes a reference circuit 51, reference circuit 51 include being connected in series the
One reference resistance R10, the second reference resistance R11 and the 3rd reference resistance R12, the first reference resistance R10 other end is coupled to+
5V power supplys, the 3rd reference resistance R12 other end are coupled to -5V power supplys, and reference circuit 51 includes two output ends, for providing
Positive reference signal and negative reference signal.
Decision circuitry 5 also includes the first decision circuitry 52 and the second decision circuitry 53, and the first decision circuitry 52 includes one
Second comparator A6, the second comparator A6 in-phase input end are coupled to subtraction circuit 4, for receiving temperature signal, the second ratio
Inverting input compared with device A6 is coupled to the tie point between the first reference resistance R10 and the second reference resistance R11, for receiving
Positive reference signal, and by positive reference signal compared with temperature signal, when temperature signal is more than positive reference signal, first judges electricity
Road 52, which can export, just judges signal；Second decision circuitry 53 includes a 3rd comparator A7, the 3rd comparator A7 same phase
Input is coupled to warm difference detecting circuit 3, and for receiving temperature signal, the 3rd comparator A7 inverting input is coupled to second
Tie point between reference resistance R11 and the 3rd reference resistance R12, for receiving negative reference signal, and by negative reference signal with
Temperature signal compares, and when temperature signal is less than negative reference signal, the second decision circuitry 53 can export negative judgement signal.
Decision circuitry 5 also includes an OR circuit 55, and two inputs of OR circuit 55 are respectively coupled to first and sentenced
The output end of the decision circuitry 53 of deenergizing 52 and second, just judge signal and negative judgement signal for receiving, and asked or transported
Calculate output and judge signal.
As shown in Figure 6 and Figure 7, current detection circuit 6 and voltage detecting circuit 7 are prior art, be will not be described here.
After electric motor starting, the temperature of motor slowly rises, temperature sensing circuit 2 can detection temperature, and output voltage
The real time temperature signal gradually increased, motor can slowly start；After motor stabilizing is run, the temperature of motor keeps constant,
The real time temperature signal magnitude that temperature sensing circuit 2 exports is constant.
When motor breaks down, the heat of motor increases rapidly, and temperature sensing circuit 2 is able to detect that the temperature of motor
Degree, and the real time temperature signal increased rapidly is exported, real time temperature signal passes to signal processing circuit 3, signal processing circuit 3
Two output ends can staggeredly output real time temperature signal and keeping temperature signal, and staggered time and control circuit 31 are shaken
Swing that cycle phase is same, and the time before the cycle of oscillation damage that is far smaller than that the motor feels hot；Subtraction circuit 4 can be to real time temperature signal
With keeping temperature differential signal, and export temperature signal, temperature signal for alternately change signal, temperature signal positive voltage with
Constantly change between negative voltage, change the cycle of oscillation that the cycle is control circuit 31, and temperature signal is temperature signal
Rate of change.
Decision circuitry 5 receives temperature signal, and when temperature signal is more than positive reference signal, the first decision circuitry 52 can export
Positive to judge signal, when temperature signal is less than negative reference signal, the second decision circuitry 53 can export negative judgement signal, and ought just sentence
Break signal or negative judgement signal some when being high level, decision circuitry 5 can export the judgement signal of high level, and signal is passed
Control circuit is passed, controller 1 can detect that motor will damage before motor damage, and controlled motor is closed.
Described above is only preferred embodiment of the present utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (6)
- A kind of 1. electromotor high-temperature early warning system, it is characterised in that including：Temperature sensing circuit (2), including the first output end and the second output end, for induction machine temperature, and in the first output End and the second output end real time temperature signal；Signal processing circuit (3), the first output end of temperature sensing circuit (2), including two output ends are coupled to, for receiving Real time temperature signal, and the temperature signal of two different times is exported respectively in two output end；Subtraction circuit (4), two output ends of signal processing circuit (3) are coupled to, for receiving two temperature signals and asking poor, To export temperature signal；Decision circuitry (5), the output end of subtraction circuit (4) is coupled to, for receiving temperature signal, temperature signal and benchmark are believed Number compare, and export judgement signal；Controller (1), the second output end of temperature sensing circuit (2) and the output end of decision circuitry (5) are coupled to, for receiving Real time temperature signal and judge signal, and according to real time temperature signal with judging that signal is worked with controlled motor.
- A kind of 2. electromotor high-temperature early warning system according to claim 1, it is characterised in that the signal processing circuit (3) IncludingControl circuit (31), replace output control signal comprising two output ends, and in two output ends；Two sampling hold circuits (32), the sampling hold circuit (32) include input, output end and control terminal, two institutes The input for stating sampling hold circuit (32) is coupled to the output end of temperature sensing circuit (2), for receiving real time temperature letter Number, two output ends export real time temperature signal and keeping temperature signal respectively；The control terminal of two sampling hold circuits (32) is respectively coupled to two output ends of control circuit (31), and controlled In control circuit (31).
- 3. a kind of electromotor high-temperature early warning system according to claim 2, it is characterised in that the control circuit (31) is more Resonance oscillation circuit, the multi-resonant oscillating circuit includeFirst triggers circuit (311), first triggers circuit (311) is interior to include the first energy-storage travelling wave tube, for the first energy storage Element charges；Second triggers circuit (312), second triggers circuit (312) is interior to include the second energy-storage travelling wave tube, for the second energy storage Element charges；First switching element, the input of the first switching element are coupled to the first triggers circuit (311), the first switch The control terminal of element is coupled to the second triggers circuit (312), for discharging the first energy-storage travelling wave tube, and is controlled by the second triggering electricity Road (312)；Second switch element, the input of the second switch element are coupled to the second triggers circuit (312), the second switch The control terminal of element is coupled to the first triggers circuit (311), for discharging the second energy-storage travelling wave tube, and is controlled by the first triggering electricity Road (311)；The control terminal of the first switching element is respectively coupled to the two of the second energy-storage travelling wave tube with the input of second switch element End；The control terminal of the second switch element and the input of first switching element are respectively coupled to the two of the first energy-storage travelling wave tube End.
- A kind of 4. electromotor high-temperature early warning system according to claim 2, it is characterised in that the sampling hold circuit (32) includeSample circuit (321), the output end of temperature sensing circuit (2) is coupled to, for receiving real time temperature signal；Holding circuit (322), the output end of the holding circuit (322) are coupled to the input of subtraction circuit (4), the holding The energy-storage travelling wave tube for being used for keeping signal is included in circuit (322), by real time temperature signal or keeping temperature signal output to subtraction Circuit (4)；3rd switch element, described 3rd switch element one end are coupled to sample circuit (321), and the other end is coupled to holding circuit (322), the control terminal of the 3rd switch element is coupled to control circuit (31).
- A kind of 5. electromotor high-temperature early warning system according to claim 4, it is characterised in that holding circuit (322) bag Include voltage follower, the output end of voltage follower is coupled in the output end of decision circuitry (5), the voltage follower it is anti-phase Input is coupled to output end, and in-phase input end is coupled to the 3rd switch element, in addition to holding capacitor, the holding capacitor One end is grounded, and the other end is coupled to the tie point between voltage follower and the 3rd switch element.
- 6. a kind of electromotor high-temperature early warning system according to claim 1, it is characterised in that the decision circuitry (5) includesReference circuit (51), for providing positive reference signal and negative reference signal；First decision circuitry (52), the output end of reference circuit (51) is coupled to, for receiving temperature signal and positive reference signal, When temperature signal is more than positive reference signal, signal is just judged with output；Second decision circuitry (53), the output end of reference circuit (51) is coupled to, for receiving temperature signal and negative reference signal, When temperature signal is less than negative reference signal, to export negative judgement signal；OR circuit (55), the output end of the first decision circuitry (52) and the output end of the second decision circuitry (53) are coupled to, used Just judging signal and negative judgement signal in receiving, and asking or export and judge signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720399551.9U CN206725118U (en) | 2017-04-15 | 2017-04-15 | A kind of electromotor high-temperature early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720399551.9U CN206725118U (en) | 2017-04-15 | 2017-04-15 | A kind of electromotor high-temperature early warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206725118U true CN206725118U (en) | 2017-12-08 |
Family
ID=60505430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720399551.9U Expired - Fee Related CN206725118U (en) | 2017-04-15 | 2017-04-15 | A kind of electromotor high-temperature early warning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206725118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111367332A (en) * | 2020-02-17 | 2020-07-03 | 深圳芥子科技有限公司 | Temperature acquisition circuit based on resistor and control method |
-
2017
- 2017-04-15 CN CN201720399551.9U patent/CN206725118U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111367332A (en) * | 2020-02-17 | 2020-07-03 | 深圳芥子科技有限公司 | Temperature acquisition circuit based on resistor and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102832669B (en) | Intelligent charge-discharge control circuit of battery | |
| CN207164146U (en) | A kind of insulating resistor detecting circuit of power battery of pure electric automobile | |
| CN105244850B (en) | Battery protecting circuit and its control method | |
| CN100397741C (en) | Method for protecting series lithium cells and circuit thereof | |
| CN105356528A (en) | Battery management system | |
| CN207303302U (en) | A kind of battery heater circuit, battery and unmanned plane | |
| CN105071453A (en) | Battery management system | |
| CN104770884B (en) | Electronic cigarette control chip and electronic cigarette | |
| CN107148735B (en) | Power inverter | |
| CN108347084A (en) | A kind of secondary battery protective chip and its application circuit for changing voltage | |
| CN103794828B (en) | A kind of lithium ion battery fast charge method and device | |
| CN206725118U (en) | A kind of electromotor high-temperature early warning system | |
| CN207281214U (en) | A kind of Type-C interfaces and its connection detection circuit | |
| CN109342935A (en) | A kind of DC bus charging circuit relay failure detection device, method and motor | |
| CN103837837A (en) | Mass detection method of sodium-sulfur batteries | |
| CN207382017U (en) | The charger detection circuit and battery management system of a kind of battery management system | |
| CN214314619U (en) | Battery heating device and lithium battery | |
| CN206559098U (en) | A kind of lithium battery USB quick charges manage circuit | |
| CN108983105A (en) | A kind of battery insulation detection circuit and its control method | |
| CN107546809A (en) | It is a kind of based on strain and the intelligent charging system and method for temperature and regulating and controlling voltage | |
| CN207717855U (en) | A kind of busbar voltage sample detecting system of linear optical coupling | |
| CN106394305A (en) | Electromobile battery pack capable of being quickly charged and quickly-charging method thereof | |
| CN206259456U (en) | A kind of novel battery bag with communication function | |
| CN208573455U (en) | Health-promotion kettle and its anti-spilled detection device | |
| CN109633426A (en) | Switch detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 Termination date: 20200415 |