CN107884659A - Broken thread detector - Google Patents
Broken thread detector Download PDFInfo
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- CN107884659A CN107884659A CN201710899656.5A CN201710899656A CN107884659A CN 107884659 A CN107884659 A CN 107884659A CN 201710899656 A CN201710899656 A CN 201710899656A CN 107884659 A CN107884659 A CN 107884659A
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- broken
- detection circuit
- broken string
- electric current
- break
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention provides a kind of broken thread detector of the rapid inerrably broken string for the wiring that detection is connected with the solenoid coil of magnetic valve.The broken thread detector (1) possesses：First switching element (2), its switching control whether to magnetic valve solenoid coil circulating current；First break detection circuit (3), it detects the broken string for the wiring being connected with solenoid coil when first switching element is connected；And second break detection circuit (4), it detects the broken string of wiring when first switching element disconnects.
Description
Technical field
A kind of broken string for the wiring being connected the present invention relates to broken thread detector, detection with the solenoid coil of magnetic valve.
Background technology
The steering that magnetic valve is widely used in the flow, ship of the coil to being supplied to engine switches over the mesh of control
Grade in.Magnetic valve to solenoid coil circulating current by whether carry out switching control opening and closing.For controlling whether to use to ship
Magnetic valve solenoid coil circulating current circuit sometimes since it is desired that avoid noise purpose, ensure setting for magnetic valve
Put place etc. and configure in the place apart from each other with magnetic valve.In that case it is necessary to by for by the solenoid of magnetic valve
The wiring that the circuit of coil and control solenoid coil is electrically connected is guided in ship.
The total length of wiring is longer, then the possibility to break is higher.It is big susceptible in the Large-sized Communication instrument as ship
Also it is not easy to find even if wiring broken string under condition, control object mal-operation, which is just known, to be broken, it is more likely that ship
Navigation break down.
Electric current for controlling whether into the circuit of solenoid coil circulating current can be because of a variety of causes and in solenoid
Coil changes in a period of flowing through electric current.Thus, detection and line solenoid in a period of solenoid coil flows through electric current
The broken string for enclosing the wiring of connection is not easy to.It is therefore proposed that a kind of carried out in a period of solenoid coil does not flow through electric current
The method of the burn out detection of wiring (with reference to patent document 1).
Patent document 1：No. 5233760 publications of Japan Patent
The content of the invention
Problems to be solved by the invention
Patent Document 1 discloses it is a kind of when solenoid coil does not flow through electric current carry out burn out detection method,
But carry out burn out detection when being not disclosed in solenoid coil positive stream overcurrent.Due to can not grasp in advance broken string can how
Timing under occur, it is therefore desirable for whether can quickly detect broken string to solenoid coil circulating current.
The solenoid coil of magnetic valve is inductive load, therefore flows through the electric current of solenoid coil from being started flowing with solid
Fixed slope is gradually increased to steady-state current.Thus, there is also following risk：From being begun to flow through electric current in solenoid coil
Specified time limit in, the electric current for flowing through solenoid coil is the state fewer than steady-state current, during this period in be mistakenly judged as
Broken string.
The present invention completes to solve the problems, such as above-mentioned, there is provided a kind of broken thread detector, can be errorless rapidly
The broken string for the wiring that ground detection is connected with the solenoid coil of magnetic valve.
The solution used to solve the problem
In order to solve the above problems, a kind of broken thread detector is provided in the mode of the present invention, the burn out detection
Device possesses：First switching element, its switching control whether to magnetic valve solenoid coil circulating current；
First break detection circuit, when the first switching element is connected, detection is connected with the solenoid coil for it
Wiring broken string；And
Second break detection circuit, it detects the broken string of the wiring when the first switching element disconnects.
Can also be also equipped with disconnection signal generating unit, when by first break detection circuit and second broken string
In the case that at least one party in detection circuit is continuously detected broken string at the appointed time, disconnection signal generating unit output
For the first signal for notifying the wiring to be broken.
Can also be, within the stipulated time switched from the open and-shut mode of the magnetic valve, the disconnection signal
Generating unit forbids the output of first signal.
Can also be also equipped with burn out detection combining unit, when by first break detection circuit and second broken string
When at least one party in detection circuit detects the broken string of the wiring, burn out detection combining unit generation expression detects described
The secondary signal of broken string,
In the case of the secondary signal is continuously detected within the stipulated time, the disconnection signal generating unit
Export first signal.
Can also be that the disconnection signal generating unit has resistance and capacitor,
The stipulated time is the time corresponding with the time constant of the resistance and the capacitor.
Can also be that the disconnection signal generating unit has counter, when by first break detection circuit and described
When at least one party in second break detection circuit detects broken string, the counter starts counting up action, is being continuously detected
Accumulated counts are carried out in a period of broken string,
The stipulated time is that the count value of the counter turns into the time of setting.
Can also be that first break detection circuit has：
First current detecting part, it detects what is flowed through in the solenoid coil when the first switching element is connected
Electric current；And
Electric current determination unit, its judge electric current for being detected by first current detecting part whether be as defined in threshold value with
Under, the electric current detected by first current detecting part be the threshold value below when the electric current determination unit be judged as there occurs
Broken string.
Can also be that second break detection circuit possesses：
Second current detecting part, its when the first switching element disconnects, detect with the first switching element simultaneously
Join the electric current flowed through in the path of connection；And
Second switch element, it is switched on or switched off based on the electric current detected by second current detecting part.
It can also be, be also equipped with photoelectrical coupler, the photoelectrical coupler is that light-emitting component and photo detector is electric exhausted each other
Obtained close to configuration, the light-emitting component acts as second current detecting part, when first with the first switch edge
The light-emitting component lights when flowing through electric current in the path that part is connected in parallel,
The photo detector is as the second switch element movement, and when the light-emitting component is luminous, the photo detector connects
It is logical.
It can also be, be also equipped with：Multiple thread break detectors, the plurality of thread break detector are respectively used to detection and multiple electromagnetism
The broken string of multiple wirings of valve connection；And
Wiring group burn out detection portion, when at least one party in by the multiple thread break detector detects broken string, the cloth
Line group burn out detection portion generates the 3rd signal for notifying to be broken at least one in the multiple wiring,
The multiple thread break detector each has the first switching element, first break detection circuit and institute
State the second break detection circuit.
Can also be that the magnetic valve is used for the switching of ship equipment.
The effect of invention
In accordance with the invention it is possible to the broken string of the rapid inerrably wiring that detection is connected with the solenoid coil of magnetic valve.
Brief description of the drawings
Fig. 1 is the circuit diagram for the broken thread detector that the first embodiment of the present invention is related to.
Fig. 2A is the figure for the specific configuration example for representing disconnection signal generating unit.
Fig. 2 B are the figures for the specific configuration example for representing disconnection signal generating unit.
Fig. 2 C are the figures for the specific configuration example for representing disconnection signal generating unit.
Fig. 2 D are the figures for the specific configuration example for representing disconnection signal generating unit.
Fig. 3 A are the timing diagrams of Fig. 1 broken thread detector.
Fig. 3 B are the timing diagrams for the broken thread detector that a comparative example is related to.
Fig. 4 is the circuit diagram for the broken thread detector that second embodiment is related to.
Fig. 5 is the timing diagram of Fig. 4 broken thread detector.
Description of reference numerals
1：Broken thread detector；2：Driving transistor；3：First break detection circuit；4：Second break detection circuit；5：
Current sensor；6：Electric current determination unit；7：Photoelectrical coupler；7a：Light-emitting component；7b：Photo detector；8：Burn out detection synthesizes
Portion；9：Disconnection signal generating unit；11：Switch；12：Comparator；13：Reference voltage generating circuit；14：Counter；21：First cloth
Line burn out detection portion；22：Second wiring burn out detection portion；23：Wiring group burn out detection portion.
Embodiment
Embodiments of the present invention are described in detail below.Hereinafter, mainly to for detecting and being equipped on ship
The broken thread detector of the broken string of the wiring of the solenoid coil connection of the magnetic valve of oceangoing ship illustrates.But present embodiment
The broken thread detector being related to can also apply to the solenoid of the magnetic valve of detection and the various devices being equipped on beyond ship
The purpose of the broken string of the wiring of coil connection.
(first embodiment)
Fig. 1 is the circuit diagram of the broken thread detector 1 of the first embodiment based on the present invention.Fig. 1 burn out detection dress
Put 1 and possess the break detection circuit 3 of driving transistor (first switching element) 2, first, the second break detection circuit 4.
The switching control of driving transistor 2 whether to magnetic valve solenoid coil L circulating currents.Fig. 1 driving transistor 2
The example of NPN bipolar transistor is shown, but can also be by PNP bipolar transistors, FET (Field Effect
Transistor：Field-effect transistor) form.Fig. 1 driver transistor 2 is connected when base voltage is high, in solenoid coil L
Flow through electric current.By whether carry out the opening and closing of switching control magnetic valve to solenoid coil L circulating currents.
When driving transistor 2 is connected, when flowing through electric current in solenoid coil L, the detection of the first break detection circuit 3 with
The broken string of the wiring of solenoid coil L connections.The magnetic valve for being equipped on ship is arranged on broken thread detector phase with Fig. 1 sometimes
Away from place farther out, the wiring being connected with solenoid coil L is elongated, easily broken string.Therefore, electric current is flowed through in solenoid coil L
In the state of the first break detection circuit 3 detection broken string.
First break detection circuit 3 has current sensor 5 and electric current determination unit 6.Current sensor 5 and solenoid coil
L is connected in series.In more detail, solenoid coil L, electricity are connected in series between supply voltage node Vcc and ground nodes
Flow sensor 5, driving transistor 2.Solenoid coil L electric current is flowed through after current sensor 5 is flowed through in driving transistor 2
The flowing of colelctor electrode-transmitting interpolar, be directed into ground nodes.The ground detection of the electric insulation of current sensor 5 is flowed in solenoid coil L
The electric current crossed.Thus, the downstream lateral circuit of current sensor 5 is not transferred to the noise of the solenoid coil L wirings being connected.
Electric current determination unit 6 detects the electric current flowed through in current sensor 5, the electric current for judging to detect whether be threshold value with
Under.Moreover, if the electric current detected, below threshold value, the output of electric current determination unit 6 represents to detect the first broken string of broken string
Detection signal V1.First burn out detection signal V1 is for the signal of high potential for example when detecting broken string.
When driving transistor 2 disconnects, the second break detection circuit 4 detects disconnected with the solenoid coil L wirings being connected
Line.Second break detection circuit 4 has resistance R1, R2 and photoelectrical coupler 7.In more detail, resistance R1 and photoelectrical coupler 7
The series circuit that interior light-emitting component 7a is connected in series to obtain is connected in parallel in colelctor electrode-transmitting interpolar of driving transistor 2.
In addition, the light member being connected in series between supply voltage node Vcc2 and ground nodes in resistance R2 and photoelectrical coupler 7
Part 7b.Photo detector 7b is second switch element, when the light-emitting component 7a in resistance R1 and photoelectrical coupler 7 flows through electric current
Photo detector 7b is connected.Light-emitting component 7a and photo detector 7b is electrically insulated, therefore by using photoelectrical coupler 7, with solenoid
The influences such as the noise of wiring of coil L connections are not transferred to the circuit in the downstream of photoelectrical coupler 7.
When driving transistor 2 disconnects, driving transistor 2 colelctor electrode-transmitting interpolar without flow through electric current, but as long as cloth
Line flows through small electric current without light-emitting component 7a of the broken string then in resistance R1 and photoelectrical coupler 7.Due to the electric current, photoelectricity
Photo detector 7b in coupler 7 is connected, and correspondingly photo detector 7b is also connected, the output of the second break detection circuit 4
That is the access path between resistance R2 and photoelectrical coupler 7 turns into low potential.On the other hand, when connecting up broken string, in resistance R1
With the light-emitting component 7a in photoelectrical coupler 7 without flow through electric current.Thus, the photo detector 7b in photoelectrical coupler 7 disconnects, and second
The output of break detection circuit 4 is high potential.Like this, the second break detection circuit 4 is output into height when detecting broken string
Second burn out detection signal V2 of current potential.
So, in Fig. 1 broken thread detector 1, the first break detection circuit 3 is driven disconnected when transistor 2 is connected
Line detects, and the second break detection circuit 4 is driven burn out detection when transistor 2 disconnects.
In addition can also be that Fig. 1 broken thread detector 1 has the burn out detection combining unit 8 for being not essential structural portion
With disconnection signal generating unit 9.At least one party in by the first break detection circuit 3 and the second break detection circuit 4 detects
During the broken string of wiring, the generation of burn out detection combining unit 8 represents to detect the secondary signal V3 of broken string.In more detail, broken string inspection
Survey combining unit 8 to generate and export secondary signal V3, secondary signal V3 is that the first break detection circuit 3 exports in burn out detection
The the first burn out detection signal V1 and the second break detection circuit 4 of high potential export the second broken string of high potential in burn out detection
Detection signal V2 logic or.Secondary signal V3 be in by the first break detection circuit 3 and the second break detection circuit 4 extremely
It is high signal when a few side detects broken string.
At least one party in by the first break detection circuit 3 and the second break detection circuit 4 continues at the appointed time
In the case that ground detects broken string, disconnection signal generating unit 9 export for notify with the wiring that solenoid coil L is connected there occurs
First signal Vout of broken string.First signal Vout is the final output signal of Fig. 1 broken thread detector 1.In the first letter
When number Vout is, for example, high potential, for notifying that wiring is broken.Such as the can be received by warning circuit (not shown)
One signal Vout, to carry out arbitrary warning processing.
Set disconnection signal generating unit 9 the reasons why be：Particularly ship is equipped with the various equipment for carrying out electromagnetic radiation, and
And grown with the total lengths of the solenoid coil L wirings being connected, therefore exist noise easily pass to wiring it is upper thus the first burn out detection
The problem of detecting broken string to the temporary error of 3 and second break detection circuit of circuit 4.As long as no at the appointed time constantly
Detecting broken string, then disconnection signal generating unit 9 does not export the first signal Vout, therefore even if due to noise for being superimposed on wiring etc.
And temporary error detect broken string, will not also be affected by.In addition, after the switching of the opening and closing direction of magnetic valve,
Sometimes the electric current flowed through in solenoid coil L is lower than steady-state current, but due to setting disconnection signal generating unit 9, thus from electricity
Without burn out detection in the stipulated time that the opening and closing direction of magnet valve switches, therefore the opening and closing immediately in magnetic valve will not be caused
The failure of broken string is had falsely detected after the switching of direction.
Fig. 2A, Fig. 2 B, Fig. 2 C and Fig. 2 D are the figures for the specific configuration example for representing disconnection signal generating unit 9.Fig. 2A's is disconnected
Line signal generation portion 9 has resistance R3, R4, capacitor C, switch 11, comparator 12, reference voltage generating circuit 13.In power supply
Resistance R4 and capacitor C are connected in series between voltage node Vcc and ground nodes.Connect in the first input end of comparator 12
The connecting node being connected between resistance R4 and capacitor C, resistance R3 is connected in series between the connecting node and ground terminal
With switch 11.There is the reference voltage generated by reference voltage generating circuit 13 in the second input terminal input of comparator 12.
According to the secondary signal V3 exported from burn out detection combining unit 8 logic, switch 11, which switches to, to be switched on or switched off.More
Specifically, when detecting broken string by burn out detection combining unit 8, switch 11 is disconnected, and 11 are switched when not detecting broken string
Connect.
In the state of the first break detection circuit 3 and the second break detection circuit 4 this two Fang Jun are not detected by broken string, open
Close 11 to connect, the electric charge for being charged to container C is discharged via resistance R3.Thus, the electricity of the first input end of comparator 12
The reference voltage of the input terminal of pressure ratio second is low, and comparator 12 for example exports low potential.
When at least one party in by the first break detection circuit 3 and the second break detection circuit 4 detects broken string, switch
11 are disconnected, and electric charge is stored in capacitor C via resistance R4.Depend on being used as electric capacity in the time needed for capacitor C storage electric charges
Device C electric capacity and the time constant of the product of resistance R4 resistance value.If switch 11 is continuously turned off, capacitor C storage
Electric charge gradually becomes more, and the voltage of the first input end of comparator 12 also uprises.It is disconnected when being continuously detected at the appointed time
During line, the voltage of first input end is more than the reference voltage of the second input terminal, output (the first signal of comparator 12
Vout) for example become and turn to high potential.
Fig. 2 B disconnection signal generating unit 9 is by obtained from a Fig. 2A circuit change part.Broken string on Fig. 2 B
Signal generation portion 9, resistance R4,11 and capacitor C of switch are connected in series between supply voltage node Vcc and ground nodes.
Resistance R3 is connected in parallel in capacitor C.It is switch 11, the first of capacitor C and resistance R3 connecting node and comparator 12 defeated
Enter terminal connection.
When detecting broken string by burn out detection combining unit 8, switch 11 is connected, and it is disconnected that 11 are switched when not detecting broken string
Open.Like this, Fig. 2 B switch 11 is switched on or switched off with Fig. 2A switch 11 with opposite timing.
In the case where being not detected by broken string by the first break detection circuit 3 and the second break detection circuit 4, switch 11
Disconnect, the electric charge for being stored in capacitor C is discharged via resistance R3.When by the first break detection circuit 3 and the second burn out detection
When at least one party in circuit 4 detects broken string, switch 11 is connected, and capacitor C is electrically charged via resistance R4.When in the stipulated time
When being inside continuously detected broken string, capacitor C both end voltage uprises, and the output of comparator 12 is that the first signal Vout turns into height
Current potential.
On Fig. 2 C disconnection signal generating unit 9, substitute Fig. 2A and Fig. 2 B capacitor C and counter 14 is set.In electricity
Resistance R4, R3 and switch 11 are connected in series between source voltage node Vcc and ground nodes.Resistance R3 and resistance R4 connection section
Point is connected with the enable end of counter 14.Counter 14 when enable end is high potential by the defined clock cycle carry out it is cumulative in terms of
Number action.Switch 11 switchs 11 connections when burn out detection combining unit 8 does not detect broken string as Fig. 2A switch 11,
When detecting broken string, switch 11 disconnects.During switch 11 disconnects, enable end is low potential, and counter 14 is without cumulative meter
Number action.When switching 11 disconnection, enable end is high potential, and counter 14 carries out accumulated counts action.
When at least one party in by the first break detection circuit 3 and the second break detection circuit 4 detects broken string, disconnected
During line continues, counter 14 carries out accumulated counts action.It is first defeated to be input to comparator 12 for the output valve of counter 14
Enter terminal.As Fig. 2A, Fig. 2 B, in the second input terminal input reference voltage of comparator 12.When the output of counter 14
When value is turned into more than reference voltage, the output of comparator 12 is that the first signal Vout turns into high potential.When broken string persistently provides
Between when, the output of counter 14 is that the first signal Vout becomes and turns to high potential.
Fig. 2 D are with the flow chart in the case of the processing action of software progress disconnection signal generating unit 9.Fig. 2 D flow
Legend using computer if performed.Computer repeats Fig. 2 D processing with short time interval.
First, determined whether to detect broken string (step S1) by burn out detection combining unit 8.Do not detecting the feelings of broken string
Under condition, it is zero to be initialized (step S2) to make count value, the first signal Vout is set as into low potential (step S3), at end
Reason.
When being judged to detecting broken string by step S1, judge whether count value is more than threshold value (step S4).If
Count value is less than threshold value, then by count value accumulated counts (step S5), the first signal Vout is set as into low potential (step S6),
End is handled.
When being determined as that count value is more than threshold value by step S4, the first signal Vout is set as high potential (step
S7), end is handled.
Fig. 3 A are the timing diagrams of Fig. 1 broken thread detector 1, and Fig. 3 B are the broken thread detectors 1 that a comparative example is related to
Timing diagram.The broken thread detector 1 that one comparative example is related to is to eliminate disconnection signal life from Fig. 1 broken thread detector 1
Into the device in portion 9.
Grid voltage Vg, the colelctor electrode-emitter stage of driving transistor 2 of driving transistor 2 are shown in Fig. 3 A and Fig. 3 B
Electric current Iin that voltage Vce, the light-emitting component 7a in photoelectrical coupler 7 flow through, the photo detector 7b in photoelectrical coupler 7
Output current Iout, the electric current Icoil flowed through in solenoid coil L, the electric current Isensor detected by current sensor 5, most
Whole output signal Vout each waveform.In addition, the first defeated of the comparator 12 in disconnection signal generating unit 9 is also illustrated in figure 3 a
Enter the voltage waveform Vo of terminal.
Fig. 3 B broken thread detector 1 does not have disconnection signal generating unit 9, therefore when by the He of the first break detection circuit 3
When at least one party in second break detection circuit 4 detects broken string, its former state reflects into final output signal.Immediately in electricity
It is lower than steady-state current in the electric current that solenoid coil L flows through after the opening and closing switching of magnet valve (moment t1), additionally, due to the shadow of noise
Ring etc., it is detected as breaking to temporary error, is exported as former state as final output signal Vout.Thus, as shown in Figure 3 B, tightly
It is connected on after the opening and closing switching of magnetic valve, is mistakenly detected as breaking.On the other hand, burn out detection dress of the present embodiment
Even if the disconnection signal generating unit 9 in 1 is put by least one party in the first break detection circuit 3 and the second break detection circuit 4
Broken string is detected, as long as broken string does not continue the stipulated time and do not reflected then in final output signal i.e. the first signal Vout.Thus,
As shown in Figure 3A, the mistake to break can be prevented without burn out detection within the stipulated time switched from the opening and closing of magnetic valve
Detection.
So, in the first embodiment, the situation of electric current is flowed through and without flow through electric current in the solenoid coil L of magnetic valve
In the case of the pair wiring being connected with solenoid coil L carry out burn out detection, therefore can quickly detect and resolve
Line.In addition, in the present embodiment, as long as controlling whether to connect to the driving transistor 2 of solenoid coil L circulating currents
The first break detection circuit 3 of burn out detection is carried out when logical, the second of burn out detection is carried out when driving transistor 2 disconnects and breaks
Detection circuit 4 at least one party be not continuously detected broken string at the appointed time, then do not export for notice there occurs
First signal Vout of broken string, therefore even if flowed as after the switching of the opening and closing immediately in magnetic valve in solenoid coil L
The electric current crossed is lower than steady-state current or is detected as breaking due to temporary errors such as noises, then the first signal of output is also not present
The problem of Vout, it can carry out preventing the burn out detection of error detection.
(second embodiment)
Multiple magnetic valves are carried on ship etc., are also increased with the number of the solenoid coil L of each magnetic valve wirings being connected
Add, the risk that burn out detection becomes complicated be present.The disconnected of multiple wirings is efficiently carried out in second embodiment described below
Line detects.
Fig. 4 is the circuit diagram of the broken thread detector 1 based on second embodiment.Fig. 4 represents to carry out and two magnetic valves
Solenoid coil L connections wiring burn out detection example, but the number of magnetic valve can be more than three, Fig. 4 electricity
Road can be applied to the burn out detection of the wiring of arbitrary number.
Fig. 4 broken thread detector 1 possesses for being broken with the solenoid coil L of the first magnetic valve wirings being connected
The first of detection connects up burn out detection portion 21, carries out broken string inspection for the wirings being connected of the solenoid coil L with second solenoid valve
The the second wiring burn out detection portion 22 surveyed and wiring group burn out detection portion 23.
First wiring burn out detection portion 21 and the second wiring burn out detection portion 22 are respectively the broken thread detector 1 with Fig. 1
Identical circuit structure, there is driving transistor 2, the first break detection circuit 3, the second break detection circuit 4, burn out detection to close
Into portion 8, disconnection signal generating unit 9.
Wiring group burn out detection portion 23 generates and exports the broken string inspections of output signal V4 and second of the first break detection circuit 3
The output signal V5 of slowdown monitoring circuit 4 logic or signal (the 3rd signal) Vout.3rd signal Vout is that final notice breaks
Signal.
When detecting broken string at least one in the multiple wirings being connected by the solenoid coil L with multiple magnetic valves
When, the 3rd signal Vout notices are broken.First break detection circuit 3 and the second break detection circuit 4 each have disconnected
Line signal generation portion 9, as long as therefore be continuously detected broken string at the appointed time, then be judged as breaking, therefore the 3rd signal
Also just think to notify broken string in the case of being continuously detected broken string at the appointed time.
Fig. 5 is the timing diagram of Fig. 4 broken thread detector 1.In Figure 5 on the first wiring burn out detection portion 21 and second
Wiring burn out detection portion 22 each shows the waveform with each signal of Fig. 3 A identicals.Moment t1~moment t2 show with the first cloth
Solenoid coil L corresponding to line burn out detection portion 21 flow through electric current in the case of timing.Moment t3~moment t6 show with
Solenoid coil L corresponding to second wiring burn out detection portion 22 flow through electric current in the case of timing.Moment t3~moment t6 is
During the driving transistor 2 in the second wiring burn out detection portion 22 is connected.The broken string connected up in moment t4 is shown.When
When breaking, electric current is also can't detect without flow through electric current, current sensor 5 in solenoid coil L.But continue in broken string
T5 at the time of after stipulated time, the first signal V5 in the second wiring burn out detection portion 22 are height, notice broken string.When the first letter
Number V5 for it is high when the 3rd signal Vout uprise immediately.
On the other hand, show do not have after moment t3 with 21 corresponding solenoid coil L of the first wiring burn out detection portion
Have and flow through electric current, broken string is detected in moment t8.T9 at the time of have passed through the stipulated time from the burn out detection, the first wiring
The first signal Vout in burn out detection portion 21 is uprised, and correspondingly the 3rd signal also uprises, notice broken string.
So, in this second embodiment, wiring group burn out detection portion 23 is set, thus, it is possible to uniformly pair with multiple electricity
Multiple wirings of each solenoid coil L connections of magnet valve carry out burn out detection, so as to occur in any one of multiple wirings
Broken string can quickly and accurately detect broken string.
The present invention mode be not limited to above-mentioned each embodiment, also including those skilled in the art it is conceivable that it is each
Kind deformation, effect of the invention are also not limited to above-mentioned content.That is, without departing from interior according to specified in claims
The thought of idea of the invention and purport derived from appearance and its equivalent can just carry out various additions, change and part and cut
Remove.
Claims (11)
1. a kind of broken thread detector, possesses：
First switching element, its switching control whether to magnetic valve solenoid coil circulating current；
First break detection circuit, it detects the cloth being connected with the solenoid coil when the first switching element is connected
The broken string of line；And
Second break detection circuit, it detects the broken string of the wiring when the first switching element disconnects.
2. broken thread detector according to claim 1, it is characterised in that
Disconnection signal generating unit is also equipped with, in by first break detection circuit and second break detection circuit extremely
In the case that a few side is continuously detected broken string at the appointed time, the disconnection signal generating unit is exported for notifying the cloth
The first signal that line is broken.
3. broken thread detector according to claim 2, it is characterised in that
Within the stipulated time switched from the open and-shut mode of the magnetic valve, the disconnection signal generating unit is forbidden described
The output of first signal.
4. the broken thread detector according to Claims 2 or 3, it is characterised in that
Burn out detection combining unit is also equipped with, in by first break detection circuit and second break detection circuit extremely
When a few side detects the broken string of the wiring, burn out detection combining unit generation represents to detect the second letter of the broken string
Number,
In the case of the secondary signal is continuously detected within the stipulated time, the disconnection signal generating unit output
First signal.
5. the broken thread detector according to any one of claim 2 to 4, it is characterised in that
The disconnection signal generating unit has resistance and capacitor,
The stipulated time is the time corresponding with the time constant of the resistance and the capacitor.
6. the broken thread detector according to any one of claim 2 to 4, it is characterised in that
The disconnection signal generating unit has counter, when by first break detection circuit and second burn out detection electricity
When at least one party in road detects broken string, the counter starts counting up action, enters in a period of broken string is continuously detected
Row accumulated counts,
The stipulated time is that the count value of the counter turns into the time of setting.
7. the broken thread detector according to any one of claim 1 to 6, it is characterised in that
First break detection circuit has：
First current detecting part, it detects the electric current flowed through in the solenoid coil when the first switching element is connected；
And
Electric current determination unit, its judge electric current for being detected by first current detecting part whether be as defined in below threshold value,
When the electric current detected by first current detecting part is below the threshold value, the electric current determination unit is judged as resolving
Line.
8. the broken thread detector according to any one of claim 1 to 7, it is characterised in that
Second break detection circuit possesses：
Second current detecting part, it detects and connected in parallel with the first switching element when the first switching element disconnects
The electric current flowed through in the path connect；And
Second switch element, it is switched on or switched off based on the electric current detected by second current detecting part.
9. broken thread detector according to claim 8, it is characterised in that
Be also equipped with photoelectrical coupler, the photoelectrical coupler be by light-emitting component and photo detector be electrically insulated from each other close to being arranged to
Arrive,
The light-emitting component is acted as second current detecting part, when being connected in parallel with the first switching element
The light-emitting component lights when electric current is flowed through in path,
The photo detector is acted as the second switch element, and when the light-emitting component is luminous, the photo detector connects
It is logical.
10. the broken thread detector according to any one of claim 1 to 9, it is characterised in that be also equipped with：
Multiple thread break detectors, the multiple thread break detector are respectively used to multiple wirings that detection is connected with multiple magnetic valves
Broken string；And
Wiring group burn out detection portion, when at least one party in by the multiple thread break detector detects broken string, generation is used for it
The 3rd signal to be broken at least one in the multiple wiring of notice,
The multiple thread break detector each has the first switching element, first break detection circuit and described the
Two break detection circuits.
11. the broken thread detector according to any one of claim 1 to 10, it is characterised in that
The magnetic valve is used for the switching of ship equipment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-194839 | 2016-09-30 | ||
| JP2016194839A JP6931524B2 (en) | 2016-09-30 | 2016-09-30 | Disconnection detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107884659A true CN107884659A (en) | 2018-04-06 |
Family
ID=61780923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710899656.5A Pending CN107884659A (en) | 2016-09-30 | 2017-09-28 | Broken thread detector |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6931524B2 (en) |
| KR (1) | KR101950604B1 (en) |
| CN (1) | CN107884659A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326206A (en) * | 2018-04-13 | 2018-07-27 | 中海油太原贵金属有限公司 | A kind of control system and warping machine and warping machine control method for warping machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51141195A (en) * | 1975-05-31 | 1976-12-04 | Yokogawa Hokushin Electric Corp | Monitor of abnormality of power unit in steering gear |
| DE4122348A1 (en) * | 1990-07-06 | 1992-01-23 | Jatco Corp | SOLENOID VALVE FAILURE DETECTING DEVICE |
| KR20020053103A (en) * | 2000-12-26 | 2002-07-05 | 이계안 | A diagnosis method of the variable force solenoid valve |
| JP2004294404A (en) * | 2003-03-28 | 2004-10-21 | Denso Corp | Disconnection detecting circuit |
| JP2007333666A (en) * | 2006-06-19 | 2007-12-27 | Tamagawa Seiki Co Ltd | Disconnection detection method and device |
| CN101271146A (en) * | 2007-03-22 | 2008-09-24 | 株式会社日立制作所 | Circuit abnormality determining apparatus and method |
| JP2012143048A (en) * | 2010-12-28 | 2012-07-26 | Denso Corp | Disconnection detection circuit |
| JP2012194056A (en) * | 2011-03-16 | 2012-10-11 | Advics Co Ltd | Disconnection detection circuit |
| CN202994951U (en) * | 2012-12-04 | 2013-06-12 | 武汉理工大学 | Diesel-engine fuel-cut-off solenoid valve coil break line detection apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5233760A (en) | 1975-09-11 | 1977-03-15 | Canon Inc | Range finder |
-
2016
- 2016-09-30 JP JP2016194839A patent/JP6931524B2/en active Active
-
2017
- 2017-09-21 KR KR1020170121627A patent/KR101950604B1/en active IP Right Grant
- 2017-09-28 CN CN201710899656.5A patent/CN107884659A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51141195A (en) * | 1975-05-31 | 1976-12-04 | Yokogawa Hokushin Electric Corp | Monitor of abnormality of power unit in steering gear |
| DE4122348A1 (en) * | 1990-07-06 | 1992-01-23 | Jatco Corp | SOLENOID VALVE FAILURE DETECTING DEVICE |
| US5153522A (en) * | 1990-07-06 | 1992-10-06 | Jatco Corporation | Solenoid valve failure detecting apparatus |
| KR20020053103A (en) * | 2000-12-26 | 2002-07-05 | 이계안 | A diagnosis method of the variable force solenoid valve |
| JP2004294404A (en) * | 2003-03-28 | 2004-10-21 | Denso Corp | Disconnection detecting circuit |
| JP2007333666A (en) * | 2006-06-19 | 2007-12-27 | Tamagawa Seiki Co Ltd | Disconnection detection method and device |
| CN101271146A (en) * | 2007-03-22 | 2008-09-24 | 株式会社日立制作所 | Circuit abnormality determining apparatus and method |
| JP2012143048A (en) * | 2010-12-28 | 2012-07-26 | Denso Corp | Disconnection detection circuit |
| JP2012194056A (en) * | 2011-03-16 | 2012-10-11 | Advics Co Ltd | Disconnection detection circuit |
| CN202994951U (en) * | 2012-12-04 | 2013-06-12 | 武汉理工大学 | Diesel-engine fuel-cut-off solenoid valve coil break line detection apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326206A (en) * | 2018-04-13 | 2018-07-27 | 中海油太原贵金属有限公司 | A kind of control system and warping machine and warping machine control method for warping machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20180036546A (en) | 2018-04-09 |
| JP2018054585A (en) | 2018-04-05 |
| JP6931524B2 (en) | 2021-09-08 |
| KR101950604B1 (en) | 2019-05-08 |
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