CN209296880U - A kind of driving testing circuit - Google Patents
A kind of driving testing circuit Download PDFInfo
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- CN209296880U CN209296880U CN201822255390.3U CN201822255390U CN209296880U CN 209296880 U CN209296880 U CN 209296880U CN 201822255390 U CN201822255390 U CN 201822255390U CN 209296880 U CN209296880 U CN 209296880U
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- driving
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- bridge rectifier
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Abstract
The utility model discloses a kind of driving testing circuits, pass through the connection relationship between the setting and above-mentioned each device of the first driving chip D1, the second driving chip D2, first switch tube Q1, second switch Q2, bridge rectifier and the first photoelectrical coupler N1, the real-time detection to relay driving is realized, the safety of control relay is improved.
Description
Technical field
The utility model relates to drive detection field more particularly to a kind of driving testing circuit.
Background technique
It in railway signal technology field, often needs to control railway operation by relay, electricity needed for working due to relay
It presses higher (such as 110 volts), it is therefore desirable to provide driving by relay drive circuit for relay.
Since the control of relay is particularly significant to railway security, it is badly in need of a kind of pair of relay driving now and examines
The circuit of survey.
Certainly, in addition to relay, other need driven electronic component to equally exist identical demand.
Utility model content
Based on the deficiency of above-mentioned technology, the utility model embodiment provides a kind of driving testing circuit, to realize to relay
The real-time detection of device driving, improves the safety of control relay.
To achieve the above object, the utility model embodiment provides the following technical solutions:
A kind of driving testing circuit, comprising: the first driving chip D1, the second driving chip D2, first switch tube Q1, second
Switching tube Q2, bridge rectifier and the first photoelectrical coupler N1,
The control signal of the control signal input of the first driving chip D1 and the second driving chip D2 input
End connection, the driving signal output end of the first driving chip D1 are connect with the base stage B1 of the first switch tube Q1；It is described
The driving signal output end of second driving chip D2 is connect with the base stage B2 of the second switch Q2；
The collector C1 of the first switch tube Q1 is connect with one end of the primary coil of transformer in bridge rectifier,
The emitter E 1 of the first switch tube Q1 is connect with the cathode of the first DC power supply U1；The collector of the second switch Q2
C2 is connect with the other end of the primary coil of transformer in bridge rectifier, the emitter E 2 of the second switch Q2 and
The cathode of one DC power supply U1 connects；
The primary coil of transformer is removable in the anode of the first DC power supply U1 and the bridge rectifier
Hold A connection；The output end G of the bridge rectifier is connect with by the input terminal of driving element M, described by driving element M's
Output end is connect with the input terminal F of the bridge rectifier；
The output end G of the bridge rectifier also connects with the input terminal of the light emitting diode of the first photoelectrical coupler N1
It connects, the output end of light emitting diode of the first photoelectrical coupler N1 is connect with the input terminal F of the bridge rectifier；Institute
State the phototriode of the first photoelectrical coupler N1 input terminal connection second source U2 anode, the phototriode it is defeated
Outlet is the driving signal test side by driving element.
Optionally, it is described by driving element be electromagnetic type relay.
Optionally, amplification factor phase of the first driving chip D1 and the second driving chip D2 to low level signal
Together.
Optionally, the first switch tube Q1 and second switch Q2 is the switching tube of same model.
Optionally, the control signal input of the first driving chip D1 and the control of the second driving chip D2 are inputted
The control signal of signal input part processed is cyclical signal, and the control signal in each period continues the first duration and adjacent
The detection signal of the second duration is spaced between the control signal in period.
Optionally, the driving signal of the driving signal output end output of the first driving chip D1 and second driving
The driving signal of the driving signal output end output of chip D2 is opposite.
Optionally, described second when it is 2 milliseconds a length of.
Optionally, described first when it is 4 seconds a length of.
Optionally, further includes: the output end G of the second photoelectrical coupler N2, the bridge rectifier pass through the second photoelectricity
The phototriode of coupler N2 is connect with the input terminal of the light emitting diode of the first photoelectrical coupler N1；
The input terminal of the light emitting diode of the second photoelectrical coupler N2 connects the anode of the second source U2, described
The output end of the light emitting diode of second photoelectrical coupler N2 is detection enable end.
Optionally, further includes: processor 001, it is the control signal input, described by driving device drives signal detection
End is connect with the processor 001.
The utility model discloses a kind of driving testing circuits, pass through the first driving chip D1, the second driving chip D2,
One switching tube Q1, second switch Q2, the setting of bridge rectifier and the first photoelectrical coupler N1 and above-mentioned each device it
Between connection relationship, realize the real-time detection to relay driving, improve control relay safety.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as practical to this
Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is a kind of driving testing circuit provided by the embodiment of the utility model；
Fig. 2 is another driving testing circuit provided by the embodiment of the utility model.
Specific embodiment
The utility model discloses a kind of driving testing circuit, those skilled in the art can use for reference present disclosure, suitably
Improve realization of process parameters.In particular, it should be pointed out that all similar substitutions and modifications are for a person skilled in the art
It will be apparent that they are considered as being included in the utility model.The technical solution of the utility model and application by compared with
Good embodiment is described, related personnel obviously can not depart from the content of the present invention, in spirit and scope to this paper institute
The technical solution stated and application is modified or appropriate changes and combinations, carrys out implementation and application the utility model technology.
Below with reference to embodiment, the utility model is further described.
As shown in Figure 1, a kind of driving testing circuit provided by the embodiment of the utility model, may include: the first driving core
Piece D1, the second driving chip D2, first switch tube Q1, second switch Q2, bridge rectifier and the first photoelectrical coupler N1,
The control signal of the control signal input of the first driving chip D1 and the second driving chip D2 input
End connection, the driving signal output end of the first driving chip D1 are connect with the base stage B1 of the first switch tube Q1；It is described
The driving signal output end of second driving chip D2 is connect with the base stage B2 of the second switch Q2；
The collector C1 of the first switch tube Q1 is connect with one end of the primary coil of transformer in bridge rectifier,
The emitter E 1 of the first switch tube Q1 is connect with the cathode of the first DC power supply U1；The collector of the second switch Q2
C2 is connect with the other end of the primary coil of transformer in bridge rectifier, the emitter E 2 of the second switch Q2 and
The cathode of one DC power supply U1 connects；
The primary coil of transformer is removable in the anode of the first DC power supply U1 and the bridge rectifier
Hold A connection；The output end G of the bridge rectifier is connect with by the input terminal of driving element M, described by driving element M's
Output end is connect with the input terminal F of the bridge rectifier；
The output end G of the bridge rectifier also connects with the input terminal of the light emitting diode of the first photoelectrical coupler N1
It connects, the output end of light emitting diode of the first photoelectrical coupler N1 is connect with the input terminal F of the bridge rectifier；Institute
State the phototriode of the first photoelectrical coupler N1 input terminal connection second source U2 anode, the phototriode it is defeated
Outlet is the driving signal test side by driving element.
It is issued as shown in Figure 1, control signal can control chip by processor etc., control signal can drive for transmission to first
To control D1 and D2 output drive signal in dynamic chip D1 and the second driving chip D1.It, can not since control signal voltage is lower
Driving is by driving element M, therefore the utility model can obtain the bigger drive of driving capability according to control signal by D1 and D2
Dynamic signal.Specifically, D1 and D2 can amplify control signal.Optionally, the first driving chip D1 and described
Two driving chip D2 are identical to the amplification factor of low level signal.
Optionally, the driving signal of the driving signal output end output of the first driving chip D1 and second driving
The driving signal of the driving signal output end output of chip D2 is opposite.Wherein, the opposite meaning of driving signal are as follows: when the first driving
When the driving signal of the driving signal output end output of chip D1 is high level, the driving signal output end of the second driving chip D2
The driving signal of output is low level；When the driving signal that the driving signal output end of the first driving chip D1 exports is low level
When, the driving signal of the driving signal output end output of the second driving chip D2 is high level.
When the driving signal for the base stage B1 for being transmitted to first switch tube Q1 is high level and is transmitted to second switch Q2's
When the driving signal of base stage B2 is low level, C1 be connected with E1, and C2 and E2 are disconnected, and the positive electric current exported of U1 can only be according at this time
The secondary cathode that U1 is returned to through the end A, C1, E1.
When the driving signal for the base stage B1 for being transmitted to first switch tube Q1 is low level and is transmitted to second switch Q2's
When the driving signal of base stage B2 is high level, C1 and E1 are disconnected, and C2 is connected with E2, and the electric current of the anode output of U1 successively passes through at this time
The end A, C2, E2 return to the cathode of U1.
Based on above-mentioned analysis it is found that when two driving signals for being transmitted to B1 and B2 are high-frequency pulse signal and two drives
When dynamic signal is opposite, the electric current of the anode output of U1 will be at the first circuit " anode of the U1 → end A → C1 → E1 → U1 cathode "
With progress high frequency switching on second servo loop " anode of the U1 → end A → C2 → E2 → U1 cathode ".In this way, being imitated by electromagnetic induction
It answers, the direct current of U1 is then converted to alternating current and pass after rectification obtains high voltage drive signal by bridge rectifier
Transport to by driving element M with drive by driving element M.
After controlling blackout, C1 and E1 are disconnected, and C2 and E2 are disconnected.The a bit of time after controlling blackout
It is interior, due to electromagnetic induction effect, bridge rectifier still can output HIGH voltage driving signal, M will not be powered off at once at this time, but
Work can be still kept within a bit of time, then stopped working again.
Optionally, it is described by driving element can be relay, further, it is possible to be electromagnetic type relay.
Optionally, the first switch tube Q1 and second switch Q2 is the switching tube of same model.
When bridge rectifier output HIGH voltage driving signal, the high level of the driving signal will make luminous the two of N1
Pole tube light-emitting, so that the phototriode of N1 is connected, the high level signal in such U2+ will be with driving signal test side
Connection, the control chip such as processor can determine whether high electricity by the detection to the electric signal on driving signal test side
Pressure driving signal is transmitted in M.When the electric signal on driving signal test side is high level, high voltage drive can have been determined
Signal is transmitted in M；When the electric signal on driving signal test side is low level, can determine does not have high voltage drive signal
It is transmitted in M.
In this way, the utility model can realize the detection to driving signal by circuit shown in Fig. 1, there is control signal
Exporting the electric signal on the control signal input to the control signal input of D1 and D2 but driving signal test side is low electricity
Usually, it can determine that driving circuit there is a problem, need to carry out safe handling.Equally, when the control signal input of D1 with
The control signal input of D2 is incoming without control signal but driving signal test side on electric signal when being high level, can be with
It determines that driving circuit there is a problem, also needs to carry out safe handling.
In practical applications, in order to improve safety, input the first driving chip D1 control signal input and
The control signal of the control signal input of the second driving chip D2 can be cyclical signal, the control in each period
Signal processed continues the detection signal that the second duration is spaced between the control signals of the first duration and adjacent periods.Wherein, it examines
Surveying signal is the signal that voltage is 0.Wherein, control signal can be pulse signal, the low level electricity in the pulse signal
Pressure is greater than 0.
In this way, D1 and D2 will not export any driving signal, such bridge rectifier when detecting signal input D1 and D2
The output end G of circuit would not also export any high voltage drive signal, and driving signal test side would not also detect high electricity
Press driving signal.By detecting signal, the utility model can detecte the control devices such as processor to the turn-off capacity of driving.
Due to (the first duration) at regular intervals will second duration detection signal, the utility model can be periodical
Turn-off capacity is detected, safety is effectively increased.
Optionally, described second when it is 2 milliseconds a length of.Optionally, described first when it is 4 seconds a length of.
It is understood that the second duration can be less than preset duration, in this way, the output end G of bridge rectifier is not defeated
The duration of any high voltage drive signal is shorter out, and relay etc. is not stopped working also by driving element just again can be by height later
Voltage drive signals drive and work on.As it can be seen that the utility model can be before not influencing to be worked normally by driving element
Put the detection of radical type turn-off capacity.
Circuit shown in Fig. 1 can be with further include: processor 001, the control signal input described are driven by driving element
Dynamic signal detection end is connect with the processor 001.
Based on driving testing circuit shown in FIG. 1, as shown in Fig. 2, another driving detection electricity provided by the utility model
Road, can also include: the second photoelectrical coupler N2, and the output end G of the bridge rectifier passes through the second photoelectrical coupler N2
Phototriode connect with the input terminal of the light emitting diode of the first photoelectrical coupler N1；
The input terminal of the light emitting diode of the second photoelectrical coupler N2 connects the anode of the second source U2, described
The output end of the light emitting diode of second photoelectrical coupler N2 is detection enable end.
It is understood that the utility model does not need the signal for receiving driving signal test side always, it is only necessary to
Detect the signal that driving signal test side is received in the time that signal issues.Therefore the utility model can pass through Fig. 2 institute
Show the second photoelectrical coupler N2 in circuit and only receives driving signal test side within the time that detection signal issues to realize
Signal.As shown in Fig. 2, when detecting enable end is low level, the lumination of light emitting diode of N2, and make the phototriode of N2
The high voltage drive signal of conducting, at this time G output is just transmitted to driving signal test side.Therefore circuit shown in Fig. 2 only needs
Exporting low level signal in the time that detection signal issues can be to inspection in other times section to detection enable end
It surveys enable end and exports high level signal.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of driving testing circuit characterized by comprising the first driving chip (D1), the second driving chip (D2), first
Switching tube (Q1), second switch (Q2), bridge rectifier and the first photoelectrical coupler (N1),
The control signal of the control signal input of first driving chip (D1) and second driving chip (D2) inputs
End connection, the driving signal output end of first driving chip (D1) and the base stage (B1) of the first switch tube (Q1) connect
It connects；The driving signal output end of second driving chip (D2) is connect with the base stage (B2) of the second switch (Q2)；
The collector (C1) of the first switch tube (Q1) is connect with one end of the primary coil of transformer in bridge rectifier,
The emitter (E1) of the first switch tube (Q1) is connect with the cathode of the first DC power supply (U1)；The second switch (Q2)
Collector (C2) connect with the other end of the primary coil of transformer in bridge rectifier, the second switch (Q2)
Emitter (E2) is connect with the cathode of the first DC power supply (U1)；
The movable terminal of the anode and the primary coil of transformer in the bridge rectifier of first DC power supply (U1)
(A) it connects；The output end (G) of the bridge rectifier is connect with by the input terminal of driving element (M), described by driving element
(M) output end is connect with the input terminal (F) of the bridge rectifier；
The output end (G) of the bridge rectifier also connects with the input terminal of the light emitting diode of the first photoelectrical coupler (N1)
It connects, the output end of the light emitting diode of first photoelectrical coupler (N1) and the input terminal (F) of the bridge rectifier connect
It connects；The anode of input terminal connection second source (U2) of the phototriode of first photoelectrical coupler (N1), it is described photosensitive
The output end of triode is the driving signal test side by driving element.
2. driving testing circuit according to claim 1, which is characterized in that it is described by driving element be electromagnetic type relay
Device.
3. driving testing circuit according to claim 1, which is characterized in that first driving chip (D1) and described
Two driving chips (D2) are identical to the amplification factor of low level signal.
4. driving testing circuit according to claim 1, which is characterized in that the first switch tube (Q1) and described second
Switching tube (Q2) is the switching tube of same model.
5. driving testing circuit according to claim 1, which is characterized in that the control of input first driving chip (D1)
The control signal of the control signal input of signal input part processed and second driving chip (D2) is cyclical signal, each
The control signal in period continues the detection that the second duration is spaced between the control signals of the first duration and adjacent periods
Signal.
6. driving testing circuit according to claim 5, which is characterized in that the driving of first driving chip (D1) is believed
The driving signal phase of the driving signal output end output of the driving signal and second driving chip (D2) of number output end output
Instead.
7. driving testing circuit according to claim 5, which is characterized in that a length of 2 milliseconds when described second.
8. driving testing circuit according to claim 5, which is characterized in that a length of 4 seconds when described first.
9. driving testing circuit according to claim 1, which is characterized in that further include: the second photoelectrical coupler (N2), institute
The output end (G) for stating bridge rectifier passes through the phototriode and the first photoelectrical coupler of the second photoelectrical coupler (N2)
(N1) input terminal of light emitting diode connects；
The input terminal of the light emitting diode of second photoelectrical coupler (N2) connects the anode of the second source (U2), described
The output end of the light emitting diode of second photoelectrical coupler (N2) is detection enable end.
10. driving testing circuit according to any one of claim 1 to 9, which is characterized in that further include: processor
(001), the control signal input, described connect with the processor (001) by driving device drives signal detection end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822255390.3U CN209296880U (en) | 2018-12-29 | 2018-12-29 | A kind of driving testing circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822255390.3U CN209296880U (en) | 2018-12-29 | 2018-12-29 | A kind of driving testing circuit |
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| CN209296880U true CN209296880U (en) | 2019-08-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021036959A1 (en) * | 2019-08-30 | 2021-03-04 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method for electric control device, and electric car |
| WO2021036958A1 (en) * | 2019-08-30 | 2021-03-04 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method for electric control device, and electric car |
| WO2021036960A1 (en) * | 2019-08-30 | 2021-03-04 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method for electric control device, and electric vehicle |
-
2018
- 2018-12-29 CN CN201822255390.3U patent/CN209296880U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021036959A1 (en) * | 2019-08-30 | 2021-03-04 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method for electric control device, and electric car |
| WO2021036958A1 (en) * | 2019-08-30 | 2021-03-04 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method for electric control device, and electric car |
| WO2021036960A1 (en) * | 2019-08-30 | 2021-03-04 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method for electric control device, and electric vehicle |
| CN112444720A (en) * | 2019-08-30 | 2021-03-05 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method of electric control device |
| CN112444720B (en) * | 2019-08-30 | 2022-06-03 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method of electric control device |
| US11435389B2 (en) | 2019-08-30 | 2022-09-06 | Contemporary Amperex Technology Co., Limited | Electrical control device detection circuit, detection method, and electric vehicle |
| US11867748B2 (en) | 2019-08-30 | 2024-01-09 | Contemporary Amperex Technology Co., Limited | Electrical control device detection circuit, detection method, and electric vehicle |
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