CN209231446U - A kind of electromagnet coil break detection circuit and electromagnetic driving mechanism - Google Patents
A kind of electromagnet coil break detection circuit and electromagnetic driving mechanism Download PDFInfo
- Publication number
- CN209231446U CN209231446U CN201822121464.4U CN201822121464U CN209231446U CN 209231446 U CN209231446 U CN 209231446U CN 201822121464 U CN201822121464 U CN 201822121464U CN 209231446 U CN209231446 U CN 209231446U
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- electromagnet coil
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- optocoupler
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- detection circuit
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Abstract
The utility model discloses a kind of electromagnet coil break detection circuits.The electromagnet coil break detection circuit of the utility model includes the first branch being constituted by a diode, and the second branch being made of the primary side of optocoupler, is connected after the first branch is in parallel with second branch with electromagnet coil to be detected, then forms circuit with power supply.The invention also discloses a kind of electromagnetic driving mechanisms.The utility model is using solenoid actuated signal as the power supply of electromagnet coil break detection circuit, and detection circuit carries out electromagnet coil burn out detection when controller issues solenoid actuated signal, and structure is simple, takes up less resources, low in energy consumption, long service life.
Description
Technical field
The utility model relates to a kind of electromagnet coil break detection circuits.
Background technique
As a kind of most common driving method, the electromagnetic driving mechanism using electromagnet as core is in low-voltage distribution system
It has obtained extremely being widely applied in system.For example, automatic change-over is one of main element in low-voltage distribution system, to low pressure
The safe and reliable operation of distribution system plays very important effect.Enforcement division of the electromagnet coil as automatic change-over
Whether part, coil can work normally the functional reliability for being directly related to automatic change-over, if electromagnet coil breaks,
Therefore so automatic change-over will be unable to the conversion in fact between existing frequently-used power supply and backup power source is to electromagnet coil
The detection of no broken string is extremely important.However, the existing generally existing circuit of electromagnet coil break detection circuit is complicated, cost of implementation
Height, the short problem of service life.
Utility model content
The technical problem to be solved by the utility model is to overcome the shortage of prior art, it is simple to provide a kind of structure, at
This cheap, electromagnet coil break detection circuit with long service life.
The utility model specifically uses following technical scheme to solve above-mentioned technical problem:
A kind of electromagnet coil break detection circuit, including the first branch being constituted by a diode, and by the original of optocoupler
The second branch of side composition is connected after the first branch is in parallel with second branch with electromagnet coil to be detected, then is formed with power supply
Circuit, the secondary side of optocoupler are the detection signal output end whether electromagnet coil breaks, the diode current flow of the first branch
Pressure drop is greater than the conducting voltage of the optocoupler primary side.
Preferably, the first branch is multiple concatenated diodes.
Preferably, the optocoupler is non-linear optocoupler.
Preferably, the electromagnet coil to be detected includes multiple electromagnet coils, the quantity and power supply of electromagnet coil
Quantity it is equal, each electromagnet coil and corresponding power supply form circuit.
Following technical scheme can also be obtained according to identical invention thinking:
A kind of electromagnetic driving mechanism, including electromagnet coil described in electromagnet coil and any technical solution as above are disconnected
Line detection circuit.
Compared with prior art, technical solutions of the utility model have the advantages that
Using solenoid actuated signal as the power supply of electromagnet coil break detection circuit, detection circuit exists the utility model
Controller carries out electromagnet coil burn out detection when issuing solenoid actuated signal, and structure is simple, takes up less resources, low in energy consumption,
Long service life.
Detailed description of the invention
Fig. 1 is the circuit theory schematic diagram of the utility model.
Specific embodiment
In view of the shortcomings of the prior art, the utility model proposes a kind of electromagnet coil break detection circuits, with electromagnet
Power supply of the driving signal as electromagnet coil break detection circuit, detection circuit is when controller issues solenoid actuated signal
Carry out electromagnet coil burn out detection.
Specifically, the electromagnet coil break detection circuit of the utility model, including first be constituted by a diode
The primary side of road and optocoupler composition second branch, after the first branch is in parallel with second branch with electromagnet coil string to be detected
Connection, then with power supply composition circuit, the detection the signal output end whether secondary side of optocoupler breaks for electromagnet coil, described first
The diode conduction voltage drop on road is greater than the conducting voltage of the optocoupler primary side.
Wherein, the first branch is multiple concatenated diodes.
In addition, the optocoupler can be linear optical coupling, it is also possible to non-linear optocoupler, from a cost perspective, preferably adopts
With the lower non-linear optocoupler of price.
The detection circuit of the utility model can carry out burn out detection to an electromagnet coil, can also be with multiple electromagnet
Coil carries out burn out detection, and the quantity of electromagnet coil and the quantity of power supply are equal, each electromagnet coil and corresponding electricity
Source forms circuit.
For convenient for public understanding, below by one embodiment and in conjunction with attached drawing come to the technical solution of the utility model into
Row is described in detail:
Fig. 1 shows the circuit theory of the present embodiment electromagnet coil break detection circuit.As shown in Figure 1, the detection is electric
Road includes diode D1, D2 and current-limiting resistance R1, optocoupler P1, and the anode of power supply U1 is connect with one end of electromagnet coil L, electromagnetism
The other end of iron coil L is connect with the anode of one end of current-limiting resistance R1 and diode D1 respectively, the cathode of diode D1 and two
The anode of pole pipe D2 connects, and the other end of current-limiting resistance R1 is connect with the first input end of optocoupler P1, the cathode difference of power supply U1
It is connect with the second input terminal of the cathode of diode D2 and optocoupler P1.
When carrying out burn out detection to n coil, the corresponding driving signal (power supply) of each coil, driving signal is connect
One end of corresponding electromagnet coil, the other end of the electromagnet coil anode with one end of current-limiting resistance R1 and diode D1 respectively
Connection.
In the electromagnet coil break detection circuit of the utility model, using the driving signal U1 conduct of electromagnet coil L
Power supply is detected, whether has the signal exported as coil breakage by optocoupler P1, structure is relatively simple, and because being short-term operation,
High reliablity, power consumption are lower.In addition, since the pressure drop of diode D1, D2 are constant, then being flowed if the internal resistance of electromagnetic coil L is different
The electric current for crossing optocoupler P1 is constant, can realize the burn out detection of electromagnet coil without adjusting, therefore the circuit of the utility model
The internal resistance size of electromagnet coil to be detected is not required, different electromagnet coils is adapted to, adaptability is high.This is practical
Novel electromagnet coil break detection circuit can be widely applied to the electromagnetic type driving of the products such as automatic change-over, breaker
In mechanism, to effectively improve the security reliability of these products.
The technical solution of the utility model is further described below with reference to the conversion process of automatic change-over.
For by state, when automatic change-over is converted, electromagnet obtains driving signal U1, U1 when optocoupler P1 is flat
The as power supply of electromagnet coil break detection circuit, at this point, power supply U1, diode D1, D2 and electromagnet coil forming circuit,
The both ends of diode D1, D2 are connected in parallel on after current-limiting resistance R1 and optocoupler P1 series connection, resistance R1 is for protecting optocoupler P1 will not be because leading
Galvanization is excessive and burns out.If electromagnet coil is normal, circuit is access, and optocoupler P1 input terminal shines, and output end is presented
It is intact to represent electromagnet coil on state；If electromagnet coil breaks, automatic change-over, which issues, controls signal, and light
Coupling P1 is not turned on, then judges that electromagnet coil breaks.Similarly, when connecting multiple electromagnet coils, each coil is one corresponding
Driving signal (power supply), when issuing driving signal to electromagnet coil, and optocoupler P1 is not turned on output, then judges electromagnetism iron wire
Circle broken string.
Claims (5)
1. a kind of electromagnet coil break detection circuit, which is characterized in that including the first branch being constituted by a diode, Yi Jiyou
The second branch of the primary side composition of optocoupler, connects after the first branch is in parallel with second branch with electromagnet coil to be detected, then with
Power supply composition circuit, the detection the signal output end whether secondary side of optocoupler breaks for electromagnet coil, the two of the first branch
Pole pipe conduction voltage drop is greater than the conducting voltage of the optocoupler primary side.
2. circuit as described in claim 1, which is characterized in that the first branch is multiple concatenated diodes.
3. circuit as described in claim 1, which is characterized in that the optocoupler is non-linear optocoupler.
4. circuit as described in claim 1, which is characterized in that the electromagnet coil to be detected includes multiple electromagnet coils,
The quantity of electromagnet coil and the quantity of power supply are equal, each electromagnet coil forms circuit with corresponding power supply.
5. a kind of electromagnetic driving mechanism, including electromagnet coil and any one of such as claim 1 ~ 4 electromagnet coil
Break detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822121464.4U CN209231446U (en) | 2018-12-18 | 2018-12-18 | A kind of electromagnet coil break detection circuit and electromagnetic driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822121464.4U CN209231446U (en) | 2018-12-18 | 2018-12-18 | A kind of electromagnet coil break detection circuit and electromagnetic driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209231446U true CN209231446U (en) | 2019-08-09 |
Family
ID=67508065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822121464.4U Active CN209231446U (en) | 2018-12-18 | 2018-12-18 | A kind of electromagnet coil break detection circuit and electromagnetic driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209231446U (en) |
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2018
- 2018-12-18 CN CN201822121464.4U patent/CN209231446U/en active Active
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