CN108071504A

CN108071504A - One kind is stopped in emergency circuit and its implementation

Info

Publication number: CN108071504A
Application number: CN201711248943.6A
Authority: CN
Inventors: 黄澄; 王长宝; 陈迅; 齐亮
Original assignee: Jiangsu University of Science and Technology
Current assignee: Jiangsu University of Science and Technology
Priority date: 2017-12-01
Filing date: 2017-12-01
Publication date: 2018-05-25

Abstract

It stops in emergency circuit and its implementation the invention discloses one kind, circuit is, there is the Electromagnetic Valve Circuit that stops in emergency of undercurrent detection electric current relay, over-current detection electric current relay including string, stop in emergency spare Electromagnetic Valve Circuit, Electromagnetic Valve Circuit overcurrent of stopping in emergency and its switch failure fault control circuit, it stops in emergency solenoid valve undercurrent switching control circuit, switch failure detection control circuit and corresponding alarm circuit in the Electromagnetic Valve Circuit that stops in emergency.Method is; parking power-fail is directly switch to stand-by power supply and powers and carry out indicator light alarm prompting; spare solenoid valve is switched to when solenoid valve undercurrent or the overcurrent of stopping in emergency to stop in emergency; the cut-out of its circuit is protected when overcurrent of stopping in emergency in Electromagnetic Valve Circuit or/and switch failure short circuit; and corresponding indicator light alarm prompting is carried out, it protects and stops until removing the Electromagnetic Valve Circuit power supply that stops in emergency.

Description

One kind is stopped in emergency circuit and its implementation

Technical field

The invention belongs to diesel engine safety protection technique fields, and in particular to diesel engine stop in emergency Electromagnetic Valve Circuit failure Switching, warning circuit and its implementation.

Background technology

At present：The emergency stopping system of diesel engine dies and oil-break two ways to stopping in emergency for diesel engine, dies Mode is the installation Electromagnetic Control valve at inlet and outlet mouth, can in case of emergency control valve be died；Oil-break mode be Install oil-break Electromagnetic Control valving on oil circuit additional, it can urgent oil-break when failure occurs.These Electromagnetic Control valves are i.e. logical The often signified solenoid valve that stops in emergency.It is designed when the solenoid valve that the solenoid valve that stops in emergency uses is normal-closed electromagnetic valve The Electromagnetic Valve Circuit that stops in emergency stops for degaussing (dead electricity)；When the solenoid valve that the solenoid valve that stops in emergency uses is normal-open electromagnetic valve When it is designed stop in emergency Electromagnetic Valve Circuit for magnetic (energization) stops.Magnetic (energization) parking is stopped and obtains in degaussing (dead electricity) In two methods, what prior art Literature was recorded：Diesel engine died with degaussing or the solenoid valve of oil-break set it is urgent There are many Electromagnetic Valve Circuit monitoring alarm method in vehicle-parking circuit, just do not sketch herein, only to the main problem of degaussing parking method It reiterates：It misses the bus and stops！, when parking power loss and/or the Electromagnetic Valve Circuit that stops in emergency disconnect, diesel engine mistakenly stop vehicle influences Diesel engine normal operation.And diesel engine with magnetic died or the solenoid valve of oil-break set the circuit that stops in emergency in solenoid valve Monitor loop alarm method is seldom.Diesel engine with magnetic died or the solenoid valve of oil-break set stop in emergency circuit work Process is：The solenoid valve that stops in emergency when diesel engine works normally is in dead electricity (loss of excitation) state, that is, the solenoid valve that stops in emergency loses During electricity condition its control die, oil-break valve is logical；When in urgent and significant trouble to the solenoid valve that stops in emergency Be powered (magnetic), closes the dying of its control, oil-break valve, realizes that diesel engine stops in emergency.However, for diesel engine with magnetic Died or the solenoid valve of oil-break set the circuit that stops in emergency in, when need to stop in emergency, the positive normal open of the solenoid valve that stops in emergency Electric diesel engine ability emergency stop, when line fracture, coil open circuit, coil short and power supply occurs in the electromagnetic valve coil that stops in emergency Electrical contact is bad when failures, need to stop in emergency, can not just be closed by the solenoid valve that stops in emergency its control die, oil-break Valve causes failure of stopping in emergency, so that the safety of diesel engine cannot ensure.Therefore for magnetic is died or oil-break The diesel engine that sets of solenoid valve stop in emergency circuit, to ensure the execution of diesel engine (diesel-driven generator) safe shutdown, be badly in need of It is detected and alarms to whether the corresponding Electromagnetic Valve Circuit that stops in emergency fails.Although being documented, such as number of patent application For：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure alarm circuit and its alarm method, be equipped with The redundant configuration of stand-by power supply and solenoid valve (being similarly normal-open electromagnetic valve) solves：It is switched to during parking power loss spare Power supply is powered；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency when stopping in emergency, be switched to spare solenoid valves work, Pass through the dying of spare solenoid valve closing control, oil-break access.Perfect set is seemed actually to can not be achieved at all：Parking Stand-by power supply power supply is switched to during power loss；The Electromagnetic Valve Circuit that stops in emergency when control is stopped in emergency disconnects, and is switched to standby It is worked with solenoid valves, passes through the dying of spare solenoid valve closing control, oil-break access.On when stop power loss when not The reasons why stand-by power supply is powered, which may be switched to, is：Because specific control parking power supply and the current mode relay of stand-by power supply switching The rated current of device coil (the second current relay coil) be greater than or equal to parking power supply rated current, and with the electric current The specified electricity that can not possibly be greater than or equal to parking power supply using LED as the electric current that the first alarm lamp flows through of type relay coil concatenation Stream, otherwise will not with LED as alarm lamp；When stop power loss when, it is assumed that flow through and the current relay coil string What is connect is greater than or equal to the rated current of parking power supply using LED as the electric current that the first alarm lamp flows through, and the current relay is complete Into parking power supply and stand-by power supply switch operating, so the rated current of requirement alarm power supply is greater than or equal to parking again Otherwise the rated current of power supply cannot normally complete switching parking power supply and switch with stand-by power supply；Again because with using LED as second The rated current of the current relay coil (the 3rd current relay coil) of alarm lamp concatenation, which also requires that, to be more than or waits In the rated current of parking power supply, so in order to ensure alarm power supply works normally, the volume of alarm power supply is just necessarily required Constant current is greater than or equal to two times of rated current or more of parking power supply, and the specified of power supply of alarming actually in engineering design Current requirements can not possibly be relevant with the rated current for the power supply that stops, the electric current individually flowed through with the alarm lamp for power supply power supply of alarming It is required that it is also impossible to relevant with the rated current for the power supply that stops and is wanted with the current relay coil for power supply power supply of alarming The rated current asked be also impossible to stop power supply rated current it is relevant, equally unlikely require each alarm lamp stream The electric current crossed is greater than or equal to the rated current of the power supply for its power supply.On the solenoid valve that stops in emergency when control is stopped in emergency Circuit disconnects, it is impossible to which being switched to the reasons why spare solenoid valves work is：It is serially connected in the electricity for the Electromagnetic Valve Circuit that stops in emergency Identification is less than the situation that the Electromagnetic Valve Circuit that stops in emergency disconnects at all for flow pattern relay (the first current relay), because concatenation Current relay coil (the first current relay coil) of the Electromagnetic Valve Circuit that the stops in emergency invention setting requirements its Rated current is greater than or equal to the rated current of parking power supply, and feelings are disconnected less than emergency stop vehicle Electromagnetic Valve Circuit so as to identify at all Condition, concrete reason are：1. the situation of the short circuit for the Electromagnetic Valve Circuit that stops in emergency can only be recognized, because the solenoid valve that stops in emergency returns During the normal power-up work of road, the normal current of set generation can not possibly be greater than or equal to the rated current of parking power supply, such as Electric current caused by fruit is greater than or equal to the rated current of parking power supply, short circuit occurs in that Electromagnetic Valve Circuit that stops in emergency certainly Phenomenon；2. when the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency is not recognized more than or equal to parking power supply Rated current, the Electromagnetic Valve Circuit institute galvanization that can only illustrate to stop in emergency are in normal range (NR) or because loose contact resistance become larger electricity Stream is equal to zero less than normal value or direct breaking current；3. because it is serially connected in the current relay for the Electromagnetic Valve Circuit that stops in emergency The situation of the short circuit for the Electromagnetic Valve Circuit that stops in emergency can only be recognized, so as to occur stopping in emergency Electromagnetic Valve Circuit institute galvanization not Pipe is in when normally, being also less than normal (such as open circuit)：Assuming that the 3rd current relay line being serially connected on the second alarm lamp The rated current that institute's galvanization is greater than or equal to parking power supply is enclosed, then spare solenoid valve is similarly in obtain electric working condition；It is actual On be serially connected in the 3rd current relay coil institute galvanization on the second alarm lamp and can not possibly be greater than or equal to parking power supply Rated current, so when the Electromagnetic Valve Circuit institute's galvanization that stops in emergency is regardless of being in normally, is also less than normally (as breaking) Spare solenoid valve must not electricity；4. because when the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency can only recognize promptly The situation of the short circuit in electromagnetic valve for braking circuit, when the electric current for the Electromagnetic Valve Circuit that stops in emergency is greater than or equal to the specified of parking power supply During electric current, to stopping in emergency, Electromagnetic Valve Circuit is not cut off, and in the same old way in "on" position, and has been turned off the standby electricity that has no problem Magnet valve, therefore the Electromagnetic Valve Circuit short-circuit protection work that stops in emergency is not had, spare solenoid valve can not be switched to and stopped in emergency, Certainly overload protective function can not be played to parking power supply.Further reaffirm：Because of two current modes being serially connected on alarm lamp The rated current of relay coil is required to the rated current for being greater than or equal to parking power supply, hardly possible to the rated current of alarm power supply Two times of rated current more than or equal to parking power supply or more！, and each with LED as alarm lamp light when the electric current that flows through More than or equal to the rated current of parking power supply！, otherwise, the current relay being serially connected on alarm lamp is had no idea work. Certainly also number of patent application is：201510845456.2 a kind of diesel-driven generator stop in emergency Electromagnetic Valve Circuit Failure Alarm Circuit and its alarm method, the redundant configuration equipped with stand-by power supply and solenoid valve (being similarly normal-open electromagnetic valve) solve：Parking Stand-by power supply power supply is switched to during power loss；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency, switching when stopping in emergency It works to spare solenoid valves, passes through the dying of spare solenoid valve closing control, oil-break access.Emitting seemingly realizes above-mentioned work( Can, but to be except there are number of patent application：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure report Alert circuit and its alarm method it is all there are the problem of and defect, also there are power supply used in alarm lamp produced by diesel-driven generator Electricity directly power, alarm lamp instruction be can't see at all after diesel-driven generator emergency stop vehicle, because controlling diesel-driven generator emergency stop When, user can not possibly stare at alarm lamp and see, it may be noted that once alarm lamp instruction state only after emergency stop, however diesel-driven generator is anxious Stop not generating electricity, how what is said or talked about has power supply output.And from number of patent application 201510846141.X and number of patent application 201510845456.2 specification described in advantageous effect content see：Diesel engine (diesel generator) stops in emergency electromagnetism Valve partial failure warning circuit can carry out self-shield in time in device fails, to ensure its solenoid valve that stops in emergency Circuit works normally, so as to fulfill the automatic emergency stop-working protection of diesel engine (diesel generator) in abnormal cases.Into one Step illustrates that the attached drawing of number of patent application 201510846141.X and number of patent application 201510845456.2 is diesel engine master control mould Block sends emergency shutdown instruction to diesel engine (diesel generator) the Electromagnetic Valve Circuit failure alarm circuit that stops in emergency, and control opens The diesel engine (diesel generator) after module switch is connected is closed to stop in emergency Electromagnetic Valve Circuit failure alarm circuit structural representation Figure, that is to say, that the attached drawing of number of patent application 201510846141.X and number of patent application 201510845456.2 is urgent Diesel engine (diesel generator) during parking stops in emergency Electromagnetic Valve Circuit failure alarm circuit structure diagram, so as to more into One step illustrates number of patent application 201510846141.X and the diesel engine (bavin described in number of patent application 201510845456.2 Diesel engine) use stop in emergency solenoid valve for magnetic electromagnetic valve for braking.

The content of the invention

The purpose of the present invention in order to solve defect existing in the prior art, for magnetic is died or the electromagnetism of oil-break The diesel engine that valve is set stops in emergency, and provides one kind and stops in emergency circuit and its implementation, realizes parking power-fail switching It powers to stand-by power supply, when stop in emergency Electromagnetic Valve Circuit undercurrent, overcurrent when stopping in emergency, switch failure short circuit is switched to spare Solenoid valve stops in emergency, and when solenoid valve overcurrent of stopping in emergency or switch failure short circuit also carries out physical break protection, ensures The circuit that stops in emergency works normally and prevents mistakenly stop；And indicator light is carried out to failure and is prompted respectively.

In order to realize above-mentioned purpose, the technical solution of realization of the invention is：

One kind is stopped in emergency circuit, including parking power supply DC1, stand-by power supply DC2, alarm power supply DC3, first voltage type after Electric appliance, second voltage type relay, tertiary voltage type relay, the 4th voltage-type relay, the 5th voltage-type relay, first Current relay, the second current relay, the solenoid valve HV1 that stops in emergency, spare solenoid valve HV2, Fisrt fault indicator light MIL1, the second malfunction indicator lamp MIL2, the 3rd malfunction indicator lamp MIL3, the 4th malfunction indicator lamp MIL4, the 5th malfunction indicator lamp MIL5, first switch module K1, second switch module K2, the 3rd switch module K3, switching tube 100, diode D1, diode D2, diode D3, resistance R1, resistance R2；The first voltage type relay coil KV11 directly power supply DC1 and connects with parking, The anode of parking power supply DC1 is connected with the normally open end of first voltage type relay two-way contact KV12, and stand-by power supply DC2 is just Pole is connected with the normal-closed end of first voltage type relay two-way contact KV12, cathode and the parking power supply DC1 of stand-by power supply DC2 Cathode be connected；First current relay coil KI11 is sequentially connected in series the second current relay coil KI21, the 3rd electricity Die mould relay normally closed contact KV33, the coil for the solenoid valve HV1 that stops in emergency, first switch module K1 switch after, first electricity The other end of flow pattern relay coil KI11 is connected with the common port of first voltage type relay two-way contact KV12, and first opens The other end for closing the switch of module K1 is connected with the cathode for the power supply DC1 that stops, with parking power supply DC1 or stand-by power supply DC2 structures Into first parking circuit, first parking circuit is the Electromagnetic Valve Circuit that stops in emergency；Second voltage type relay normally open After contact KV22 is sequentially connected in series the switch of the coil of spare solenoid valve HV2, second switch module K2, second voltage type relay is normal The other end for opening contact KV22 is connected with the common port of first voltage type relay two-way contact KV12, second switch module K2 Switch the other end with stop power supply DC1 cathode be connected, with parking power supply DC1 or stand-by power supply DC2 form Article 2 Parking circuit, the Article 2 parking circuit is the spare Electromagnetic Valve Circuit that stops in emergency；Second current relay normally opened contact After KI22 and tertiary voltage type relay normally open contact KV32 and the 5th voltage-type relay normally open contact KV52 is connected with each other, one The common port of first voltage type relay two-way contact KV12 is accessed after the concatenation tertiary voltage type relay coil KV31 of end, it is another Terminate the cathode into parking power supply DC1, with parking power supply DC1 or stand-by power supply DC2 form Article 3 parking circuit, the described 3rd Item parking circuit is the switch failure fault control circuit of solenoid valve overcurrent and first switch module of stopping in emergency；First current mode One end of relay normally closed contact KI12 is connected with the common port of first voltage type relay two-way contact KV12, other end string The connecting line that standby electricity magnet valve HV2 coils are switched with second switch module K2 is accessed after meeting second voltage type relay coil KV21 On, Article 4 parking circuit is formed with parking power supply DC1 or stand-by power supply DC2, the Article 4 parking circuit is to stop in emergency Solenoid valve undercurrent switching control circuit；One end of the 4th voltage-type relay coil KV41 is double with first voltage type relay It is connected to the common port of contact KV12, the other end accesses the solenoid valve HV1 coils that stop in emergency and switched with first switch module K1 Connecting line on, form Article 5 parking circuit with parking power supply DC1 or stand-by power supply DC2, Article 5 parking circuit is The switch on and off measure loop of first switch module K1；First voltage type relay normally closed contact KV13 concatenates the 3rd indicating fault It power supply DC3 and is connect with alarm after lamp MIL3, parking power-fail alarm circuit is formed with alarm power supply DC3；Tertiary voltage type after The common port of electric appliance two-way contact KV34 is connected with the anode for the power supply DC3 that alarms, tertiary voltage type relay two-way contact The normally open end of KV34 is connected after concatenating the second malfunction indicator lamp MIL2 with the cathode for the power supply DC3 that alarms, with power supply DC3 structures of alarming Into the Electromagnetic Valve Circuit that stops in emergency by physical break protection alarm circuit；Tertiary voltage type relay two-way contact KV34's is normal Closed end is sequentially connected in series the first current relay normally-closed contact KI13, Fisrt fault indicator light MIL1, the 3rd switch module K3 Cathode after switch with the power supply DC3 that alarms is connected, and the solenoid valve undercurrent alarm circuit that stops in emergency is formed with alarm power supply DC3； After 4th voltage-type relay normally closed contact KV42 concatenates the 4th malfunction indicator lamp MIL4, one end and the anode of alarm power supply DC3 It is connected, on the connecting line of other end access Fisrt fault indicator light MIL1 and the 3rd switch module K3 switches, with power supply of alarming DC3 forms the switch failure open circuit detection alarm circuit of first switch module K1；5th voltage-type relay normally open contact KV53 It concatenates after the 5th malfunction indicator lamp MIL5 with alarm power supply DC3 and connecing, opening for first switch module K1 is formed with alarm power supply DC3 Close failure short-circuit alarming circuit；100 cold end of switching tube is connected with the cathode for the power supply DC3 that alarms, 100 high potential of switching tube One end with resistance R1 and the 4th voltage-type relay normally open contact KV43 after the 5th voltage-type relay coil KV51 of concatenation of end One end it is connected with each other, the other end of the 4th voltage-type relay normally open contact KV43 is connected with the anode for the power supply DC3 that alarms, The other end of resistance R1 and the anode of diode D1 and the anode of diode D2 are connected with each other, the cathode access first of diode D1 On the connecting line of malfunction indicator lamp MIL1 and the 3rd switch module K3 switches, the cathode of diode D2 and the anode phase of diode D3 Connection, the cathode of diode D3 and one end of resistance R2 and 100 control terminal of switching tube are connected with each other, the other end and report of resistance R2 The cathode of alert power supply DC3 is connected, and the switch failure short-circuit detecting that first switch module K1 is formed with alarm power supply DC3 controls back Road；Control terminal, the control terminal of second switch module K2 and the control terminal of the 3rd switch module K3 of the first switch module K1 It is connected after connected with each other with the output of diesel engine main control module；The switching tube 100 is N-type metal-oxide-semiconductor；Or the switching tube 100 be NPN type triode.

The rated current of the first current relay coil KI11 of the above is equal to the solenoid valve HV1 coils that stop in emergency Extinction current；The rated current of the second current relay coil KI21 is equal to the solenoid valve HV1 coils that stop in emergency Maximum allowed current.

Above-described first voltage type relay two-way contact KV12, second voltage type relay normally open contact KV22, And the maximum currents that allow to flow through of tertiary voltage type relay normally closed contact KV33 are equal to or the volume more than parking power supply DC1 Constant current.

The above-described extinction current for stopping in emergency solenoid valve HV1 coils is to refer to ensure the electromagnetism that stops in emergency The minimum current of valve HV1 normal works.

The above-described maximum allowed current for stopping in emergency solenoid valve HV1 coils is to refer to ensure to burn out promptly The maximum operating currenbt of electromagnetic valve for braking HV1 coils.

When above-described switching tube 100 is N-type metal-oxide-semiconductor, the grid of N-type metal-oxide-semiconductor is the control terminal of switching tube 100, N-type The drain electrode of metal-oxide-semiconductor is the hot end of switching tube 100, and the source electrode of N-type metal-oxide-semiconductor is the cold end of switching tube 100；Described opens When to close pipe 100 be NPN type triode, the base stage of NPN type triode is the control terminal of switching tube 100, the current collection of NPN type triode The extremely hot end of switching tube 100, the cold end of the transmitting extremely switching tube 100 of NPN type triode.

Above-described diode D1, diode D2 and diode D3 are switching diode；The N-type metal-oxide-semiconductor is N Channel enhancement metal-oxide-semiconductor；The NPN type triode is NPN type switching transistor.

In order to realize above-mentioned purpose, another technical solution of the invention is：

A kind of implementation method for the circuit that stops in emergency, comprises the following steps:

First, stop power supply DC1 and stand-by power supply DC2 handoff procedures

1) when stop power supply DC1 output for it is normal when, first voltage type relay coil KV11 obtain it is electric, first voltage type after The contact action of electric appliance：

(1) the common port of first voltage type relay two-way contact KV12 and normally open end are connected, and parking power supply DC1 is to parking Loop power supply,

(2) first voltage type relay normally closed contact KV13 is disconnected, and the 3rd malfunction indicator lamp MIL3 extinguishes；

2) when the power supply DC1 that stops fails, first voltage type relay coil KV11 dead electricity, first voltage type relay Contact reverts to static state：

(1) the common port of first voltage type relay two-way contact KV12 is connected with normal-closed end, is switched to stand-by power supply DC2 To parking loop power supply,

(2) first voltage type relay normally closed contact KV13 is connected, and the 3rd malfunction indicator lamp MIL3 is lighted, and user is prompted to stop Vehicle power supply DC1 fails；

2nd, the process of stop in emergency solenoid valve (HV1) and spare solenoid valve (HV2) is controlled

1) second switch module K2 and the 3rd switch module K3 is assert to be intact, and first switch module K1 quality is set to as not Know：

When diesel engine main control module is sent to first switch module K1 and second switch module K2 and the 3rd switch module K3 During emergency shut-down control device signal, the switch connection of second switch module K2, the switch connection of the 3rd switch module K3, first opens Whether the switch for closing module K1 is connected to be unknown,

When diesel engine main control module is not sent out to first switch module K1 and second switch module K2 and the 3rd switch module K3 During going out emergency shut-down control device signal, the switch of second switch module K2 disconnects, and the switch of the 3rd switch module K3 disconnects, and first It is unknown whether the switch of switch module K1 is broken as；

2) when the switch connection of first switch module K1, the 4th voltage-type relay coil KV41 is powered, the 4th voltage-type The contact of relay is in dynamic, i.e. the 4th voltage-type relay normally closed contact KV42 is disconnected, the 4th voltage-type relay normally open Contact KV43 is connected；

3) when the switch disconnection of first switch module K1, the 4th voltage-type relay coil KV41 no powers, the 4th voltage The contact of type relay is in static state, i.e. the 4th voltage-type relay normally closed contact KV42 is connected, and the 4th voltage-type relay is normal Open contact KV43 disconnections；

4) when the 3rd switch module K3 switch in an ON state, no matter whether the switch of first switch module K1 is in It disconnects, i.e., no matter whether the contact of the 4th voltage-type relay is in static state, the 5th equal no power of voltage-type relay, the 5th electricity The contact of die mould relay is in static state, and control signal is not generated to tertiary voltage type relay, and controls the 5th indicating fault Lamp MIL5 is extinguishing；

5) when the switch of the 3rd switch module K3 is off, and the switch of first switch module K1 is in and disconnects, I.e. the contact of the 4th voltage-type relay is in static state, then the 5th voltage-type relay no power, the 5th voltage-type relay Contact is in static state, does not generate control signal to tertiary voltage type relay, and controls the 5th malfunction indicator lamp MIL5 to extinguish；

6) when the switch of the 3rd switch module (K3) is off, and the switch of first switch module K1 is in and connects Logical, i.e., the contact of the 4th voltage-type relay is in dynamic, then the 5th voltage-type relay power, the 5th voltage-type relay Contact is in dynamic：

(1) the 5th voltage-type relay normally open contact KV52 is connected, and control signal is generated to tertiary voltage type relay, if Tertiary voltage type relay is in energization self-locking, then tertiary voltage type relay remains powered on self-locking, otherwise, triggers tertiary voltage Type relay power and self-locking,

(2) the 5th voltage-type relay normally open contact KV53 is connected, and lights the 5th malfunction indicator lamp MIL5, and user is prompted to exist The switch failure short circuit of first switch module K1 during non-emergent parking；

7) when the 3rd switch module (K3) switch in an ON state when, if the 4th voltage-type relay normally closed contact KV42 is connected, then lights the 4th malfunction indicator lamp MIL4, prompts the switch failure open circuit of user's first switch module K1；

8) when the second current relay detects the maximum allowed current more than the solenoid valve HV1 coils that stop in emergency, The contact of second current relay enters dynamic, i.e. the second current relay normally opened contact KI22 is connected, to tertiary voltage Type relay generates control signal, if tertiary voltage type relay is in energization self-locking, tertiary voltage type relay keeps logical Electric self-locking, otherwise, triggering tertiary voltage type relay power and self-locking；

9) when the second current relay does not detect the maximum allowed current more than the solenoid valve HV1 coils that stop in emergency When, the contact of the second current relay is in static state, i.e. the second current relay normally opened contact KI22 is disconnected, not to the 3rd Voltage-type relay generates control signal；

10) it is powered when tertiary voltage type relay is in, i.e., the contact of tertiary voltage type relay is in dynamic：

(1) the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency is disconnected, to urgent Electromagnetic valve for braking circuit carries out physical break protection,

(2) the common port of tertiary voltage type relay two-way contact KV34 is connected with normally open end, lights the second malfunction indicator lamp MIL2, prompt user stop in emergency solenoid valve HV1 coil overcurrent or/and first switch module K1 switch failure short circuit：

1. when the second malfunction indicator lamp MIL2 is lit during diesel engine stops in emergency by extinguishing, illustrate the electricity that stops in emergency The coil overcurrent of magnet valve HV1,

2. when the second malfunction indicator lamp MIL2 is lit during the non-emergent parking of diesel engine by extinguishing, illustrate first switch The switch failure short circuit of module K1,

3. stopping in emergency when in diesel engine with during non-emergent parking, the 5th malfunction indicator lamp MIL5 is always maintained at extinguishing shape State, then, the second malfunction indicator lamp MIL2 lighted, the coil overcurrent for the solenoid valve HV1 that illustrates to stop in emergency,

4. after the second malfunction indicator lamp MIL2 is lighted during diesel engine stops in emergency by extinguishing, the 5th malfunction indicator lamp MIL5 can be lit during non-emergent parking, then follow-up in the second malfunction indicator lamp MIL2 lighted, explanation is stopped in emergency The coil overcurrent of solenoid valve HV1 and the switch failure short circuit of first switch module K1,

5. after the second malfunction indicator lamp MIL2 is lighted during the non-emergent parking of diesel engine by extinguishing, then point is subsequently in The second bright malfunction indicator lamp MIL2 illustrates the switch failure short circuit of first switch module K1；

11) when stop in emergency Electromagnetic Valve Circuit by electric current be less than the minimum of the solenoid valve HV1 coils that stop in emergency and maintain During electric current, the contact of the first current relay is in static state, and the first current relay normally-closed contact KI12 is connected, the first electricity Flow pattern relay normally closed contact KI13 is connected：

First current relay normally-closed contact KI12 connect and second switch module K2 switch in an ON state When, second voltage type relay coil (KV21) must be electric, and the contact of second voltage type relay is become dynamically from static state, i.e., and second Voltage-type relay normally open contact KV22 is connected, and spare solenoid valve HV2 obtains magnetic, and control diesel engine stops in emergency,

First current relay normally-closed contact KI13 connect, the switch of the 3rd switch module K3 in an ON state, And the contact of tertiary voltage type relay be in static state, i.e., the common port of tertiary voltage type relay two-way contact KV34 with it is normally closed When termination is logical, then Fisrt fault indicator light MIL1 is lighted, tertiary voltage type relay is normally closed during prompting user is stopped in emergency touches Point KV33 is in connect in the case of stop in emergency the coil undercurrent of solenoid valve HV1,

(3) the first current relay normally-closed contact KI13 is connected, if the contact of tertiary voltage type relay is in dynamic, I.e. the common port of tertiary voltage type relay two-way contact KV34 is disconnected with normal-closed end, and no matter the switch of the 3rd switch module K3 connects Whether logical, Fisrt fault indicator light MIL1 extinguishes；

12) when flow through the solenoid valve HV1 coils that stop in emergency electric current be less than or equal to its maximum allowed current, more than or equal to it During extinction current, the solenoid valve HV1 that stops in emergency obtains magnetic, and control diesel engine stops in emergency.

A kind of implementation method of above-described circuit that stops in emergency, further includes following steps:

In stand-by power supply DC2 to during parking loop power supply, when power supply DC1 outputs of stopping revert to normal, first is electric Die mould relay coil KV11 obtains electric, the contact action of first voltage type relay：

(1) the common port of first voltage type relay two-way contact KV12 and normally open end are connected, recover parking power supply DC1 to Stop loop power supply；

(2) first voltage type relay normally closed contact KV13 is disconnected, and the 3rd malfunction indicator lamp MIL3 lighted extinguishes.

After above-described tertiary voltage type relay power self-locking, wait to remove parking power supply DC1 and stand-by power supply DC2, The contact of tertiary voltage type relay is static state by Dynamic- Recovery.

Advantageous effect：

One kind of the present invention is stopped in emergency circuit and its implementation, main feature：

Diesel engine stop in emergency during and non-emergent parking during during the entire process of, once parking power-fail, Stand-by power supply work is switched to, and lights the 3rd malfunction indicator lamp MIL3, prompts user's parking power-fail；Power supply to be stopped is extensive It is multiple normal, automatically return to parking power supply power supply.

(2) overcurrent or/and switch failure short-circuit protection are not in before diesel engine stops in emergency, is stopped in emergency in diesel engine Period if the coil undercurrent for the solenoid valve HV1 that stops in emergency, is stopped in emergency by spare solenoid valve HV2, and lights the first event Hinder indicator light MIL1, the coil undercurrent that user is prompted to stop in emergency solenoid valve HV1.

(3) during diesel engine stops in emergency, if detecting the coil overcurrent for the solenoid valve HV1 that stops in emergency, cut-out promptly stops Vehicle Electromagnetic Valve Circuit, the Electromagnetic Valve Circuit that stops in emergency to cut-out carry out short-circuit protection, light the second malfunction indicator lamp MIL2, prompt User is stopped in emergency the coil overcurrent of solenoid valve HV1, and by means of the solenoid valve HV1 that stops in emergency coil undercurrent when be switched to it is standby Method of stopping in emergency is carried out with solenoid valve HV2, is stopped in emergency by spare solenoid valve HV2.

(4) the Electromagnetic Valve Circuit switch failure that stops in emergency during the non-emergent parking of diesel engine is short-circuit, and cut-off loop is protected It protects and prevents mistakenly stop vehicle.

(5) carry out diesel engine in overcurrent or/and switch failure short-circuit protection before diesel engine stops in emergency and stop in emergency When, it is switched to spare solenoid valve HV2 and stops in emergency.

(6), when the 5th malfunction indicator lamp MIL5 is lighted, the switch failure short circuit of first switch module K1 is illustrated；When the 4th event Barrier indicator light MIL4 is lighted, and illustrates the switch failure open circuit of first switch module K1.

Description of the drawings

Fig. 1 is a kind of schematic block circuit diagram of circuit that stops in emergency of the present invention；

In figure：KV11. first voltage type relay coil, KV12. first voltage type relay two-way contacts, KV13. One voltage-type relay normally closed contact, KV21. second voltage type relay coils, KV22. second voltage type relay normally opens touch Point, KV31. tertiary voltage type relay coils, KV32. tertiary voltage type relay normally open contacts, KV33. tertiary voltages type after Electric appliance normally-closed contact, KV34. tertiary voltage type relay two-way contacts, KI11. the first current relay coils, KI12, KI13. the first current relay normally-closed contact, KI21. the second current relay coils, the second current relay of KI22. Normally opened contact, the 4th voltage-type relay coils of KV41., the 4th voltage-type relay normally closed contacts of KV42., the 4th electricity of KV43. Die mould relay normally open contact, the 5th voltage-type relay coils of KV51., the 5th voltage-type relay normally open of KV52, KV53. touch Point, 100. switching tubes, D1, D2, D3. diode, R1, R2. resistance, DC1. parking power supplys, DC2. stand-by power supplies, DC3. alarm electricity Source, HV1. stop in emergency solenoid valve, the spare solenoid valves of HV2., MIL1. Fisrt fault indicator lights, the second malfunction indicator lamp of MIL2., MIL3. the 3rd malfunction indicator lamp, the 4th malfunction indicator lamp of MIL4., the 5th malfunction indicator lamp of MIL5., K1. first switch modules, K2. second switch module, the 3rd switch modules of K3..

Specific embodiment

The circuit as shown in Figure 1, one kind is stopped in emergency, including parking power supply DC1, stand-by power supply DC2, alarm power supply DC3, the One voltage-type relay, second voltage type relay, tertiary voltage type relay, the 4th voltage-type relay, the 5th voltage-type Relay, the first current relay, the second current relay, the solenoid valve HV1 that stops in emergency, spare solenoid valve HV2, first Malfunction indicator lamp MIL1, the second malfunction indicator lamp MIL2, the 3rd malfunction indicator lamp MIL3, the 4th malfunction indicator lamp MIL4, the 5th Malfunction indicator lamp MIL5, first switch module K1, second switch module K2, the 3rd switch module K3, switching tube 100, diode D1, diode D2, diode D3, resistance R1, resistance R2；The first voltage type relay coil KV11 directly with stop power supply DC1 simultaneously connects, and the anode of parking power supply DC1 is connected with the normally open end of first voltage type relay two-way contact KV12, standby electricity The anode of source DC2 is connected with the normal-closed end of first voltage type relay two-way contact KV12, and the cathode of stand-by power supply DC2 is with stopping The cathode of vehicle power supply DC1 is connected；First current relay coil KI11 is sequentially connected in series the second current relay coil KI21, tertiary voltage type relay normally closed contact KV33, the coil for the solenoid valve HV1 that stops in emergency, first switch module K1 are opened The common port phase of the other end of Guan Hou, the first current relay coil KI11 and first voltage type relay two-way contact KV12 Connection, the other end of the switch of first switch module K1 are connected with the cathode for the power supply DC1 that stops, with the power supply DC1 or standby that stops First parking circuit is formed with power supply DC2, first parking circuit is the Electromagnetic Valve Circuit that stops in emergency；Second voltage type After relay normally open contact KV22 is sequentially connected in series the switch of the coil of spare solenoid valve HV2, second switch module K2, second voltage The other end of type relay normally open contact KV22 is connected with the common port of first voltage type relay two-way contact KV12, and second The other end of the switch of switch module K2 is connected with the cathode for the power supply DC1 that stops, with the power supply DC1 or stand-by power supply DC2 that stops Article 2 parking circuit is formed, the Article 2 parking circuit is the spare Electromagnetic Valve Circuit that stops in emergency；Second current mode relay Device normally opened contact KI22 and tertiary voltage type relay normally open contact KV32 and the 5th voltage-type relay normally open contact KV52 phases Mutually and after connecing, access first voltage type relay two-way contact KV12's after one end concatenation tertiary voltage type relay coil KV31 Common port, the cathode of other end access parking power supply DC1, forms Article 3 with parking power supply DC1 or stand-by power supply DC2 and stops back Road, Article 3 parking circuit are that the stop in emergency switch failure fault control of solenoid valve overcurrent and first switch module returns Road；One end of first current relay normally-closed contact KI12 and the common port phase of first voltage type relay two-way contact KV12 Connection, the other end access standby electricity magnet valve HV2 coils and second switch module after concatenating second voltage type relay coil KV21 On the connecting line of K2 switches, Article 4 parking circuit, the Article 4 parking are formed with parking power supply DC1 or stand-by power supply DC2 Circuit is solenoid valve undercurrent switching control circuit of stopping in emergency；One end and first of the 4th voltage-type relay coil KV41 The common port of voltage-type relay two-way contact KV12 is connected, and the other end accesses stop in emergency solenoid valve HV1 coils and first On the connecting line of switch module K1 switches, Article 5 parking circuit is formed with parking power supply DC1 or stand-by power supply DC2, described the The switch on and off measure loop that five parking circuits are first switch module K1；First voltage type relay normally closed contact KV13 goes here and there It connects with alarm power supply DC3 and connecing after the 3rd malfunction indicator lamp MIL3, forming parking power-fail with alarm power supply DC3 alarms back Road；The common port of tertiary voltage type relay two-way contact KV34 with alarm power supply DC3 anode be connected, tertiary voltage type after The normally open end of electric appliance two-way contact KV34 is connected after concatenating the second malfunction indicator lamp MIL2 with the cathode for the power supply DC3 that alarms, with Alarm power supply DC3 compositions stop in emergency Electromagnetic Valve Circuit by physical break protection alarm circuit；Tertiary voltage type relay is double The first current relay normally-closed contact KI13, Fisrt fault indicator light MIL1, are sequentially connected in series to the normal-closed end of contact KV34 Cathode after the switch of three switch module K3 with the power supply DC3 that alarms is connected, and the solenoid valve that stops in emergency is formed with alarm power supply DC3 Undercurrent alarm circuit；After 4th voltage-type relay normally closed contact KV42 concatenates the 4th malfunction indicator lamp MIL4, one end and alarm The anode of power supply DC3 is connected, the connecting line of other end access Fisrt fault indicator light MIL1 and the 3rd switch module K3 switches On, the switch failure open circuit that first switch module K1 is formed with alarm power supply DC3 detects alarm circuit；5th voltage-type relay Normally opened contact KV53 power supply DC3 and connects after concatenating the 5th malfunction indicator lamp MIL5 with alarm, and forming first with alarm power supply DC3 opens Close the switch failure short-circuit alarming circuit of module K1；100 cold end of switching tube is connected with the cathode for the power supply DC3 that alarms, and opens One end with resistance R1 and the 4th voltage-type relay after the 5th voltage-type relay coil KV51 of 100 hot end of pipe concatenation of pass One end of normally opened contact KV43 is connected with each other, the other end and the alarm power supply DC3 of the 4th voltage-type relay normally open contact KV43 Anode be connected, the other end of resistance R1 and the anode of the anode of diode D1 and diode D2 are connected with each other, diode D1 The connecting line that switchs of cathode access Fisrt fault indicator light MIL1 and the 3rd switch module K3 on, the cathode of diode D2 and two The anode of pole pipe D3 is connected, and the cathode of diode D3 and one end of resistance R2 and 100 control terminal of switching tube are connected with each other, resistance The other end of R2 is connected with the cathode for the power supply DC3 that alarms, and the switch failure of first switch module K1 is formed with alarm power supply DC3 Short-circuit detecting control loop；The control terminal of the first switch module K1, the control terminal of second switch module K2 and the 3rd switch The control terminal of module K3 is connected with each other to be connected afterwards with the output of diesel engine main control module.

Above-described first switch module K1, second switch module K2 and the 3rd switch module K3 work as serviceable condition When：In (machine) control signal of stopping in emergency for receiving diesel engine main control module and sending, the switch connection accordingly controlled, i.e., first The switch connection of switch module K1, the switch connection of second switch module K2, the switch connection of the 3rd switch module K3；It is not connecing (machine) control signal of stopping in emergency that diesel engine main control module is sent is received, the switch accordingly controlled is off, i.e., and The switch of one switch module K1 is off, the switch of second switch module K2 is off, the 3rd switch module The switch of K3 is off.

The above is in (machine) control signal of stopping in emergency for receiving diesel engine main control module and sending, that is to say, that this hair A kind of bright circuit that stops in emergency is in (machine) control signal of stopping in emergency for receiving diesel engine main control module and sending, at this time promptly Vehicle-parking circuit is operated in control diesel engine and stops in emergency.

The above is in (machine) control signal of stopping in emergency for not receiving diesel engine main control module and sending, that is to say, that this A kind of circuit that stops in emergency of invention is in (machine) control signal of stopping in emergency for not receiving diesel engine main control module and sending, at this time The circuit that stops in emergency is operated in non-controlling diesel engine and stops in emergency.

But in real work：For second switch module K2, since spare solenoid valve HV2 frequency of use is not high, So the switch of second switch module K2 is less likely to be damaged；For the 3rd switch module K3, during work due to by electricity Flow it is small, so the switch of the 3rd switch module K3 is also less likely to be damaged；For first switch module K1, due to stopping in emergency Solenoid valve HV1 is mainly used to the solenoid valve to stop in emergency, therefore for relatively spare solenoid valve HV2：Frequency of use is high, such as when urgent Electromagnetic valve for braking HV1 causes its coil short to be just easy to first switch module K1 switching burning short circuit after being used for multiple times, then exists Non-controlling diesel engine stops in emergency Electromagnetic Valve Circuit there is also during overcurrent or non-emergent parking during stopping in emergency, due to the The short circuit of one switch module K1 switch failures, causes and stops in emergency by mistake.Therefore the second switch module K2 is assert in the present invention It is serviceable condition with the 3rd switch module K3, first switch module K1 is unknown state.

Described diode D1, D2 and D3 are switching diode, and diode D2 and D3 select transwitch diode, diode D1 selects transwitch diode or germanium switching diode.

The switching tube 100 is N-type metal-oxide-semiconductor or NPN type triode, and the N-type metal-oxide-semiconductor used is the enhanced MOS of N-channel Pipe, the NPN type triode used is NPN type switching transistor；When switching tube 100 is N-type metal-oxide-semiconductor, the grid of N-type metal-oxide-semiconductor (G) be switching tube 100 control terminal, the drain electrode (D) of N-type metal-oxide-semiconductor is the hot end of switching tube 100, the source electrode of N-type metal-oxide-semiconductor (S) it is the cold end of switching tube 100, and when the switch of the 3rd switch module K3 is in disconnection, it is electric by the 4th with shorting stub Die mould relay normally open contact KV43 short circuits adjust gate-source voltage by resistance R1 and resistance R2, make the conducting of switching tube 100 full With mix up the resistance value of rear fixed resistance R1 and resistance R2, and remove the 4th voltage-type relay normally open contact KV43 shorting stubs；When When switching tube 100 is NPN type triode, the base stage of NPN type triode is the control terminal of switching tube 100, the collection of NPN type triode Electrode is the hot end of switching tube 100, and NPN type triode emits the cold end of extremely switching tube 100, and is opened the 3rd The switch for closing module K3 is in when disconnecting, and with shorting stub by the 4th voltage-type relay normally open contact KV43 short circuits, passes through resistance R1 and resistance R2 adjusts base current, and switching tube 100 is made to turn on saturation, mixes up the resistance value of rear fixed resistance R1 and resistance R2, and Remove the 4th voltage-type relay normally open contact KV43 shorting stubs.When the switch connection of the 3rd switch module K3, i.e. diode D1 During conducting, the cathode current potential of diode D1 anodes to alarm power supply DC3 are clamped at 0.7V or so, so as to anode and diode D1 The diode D2 that anode connects, the current potential of anode to alarm power supply DC3 cathode are equal to diode D1 anodes to alarm power supply DC3 The current potential of the current potential that cathode is clamped, i.e. diode D2 anodes to alarm power supply DC3 cathode is clamped at 0.7V or so, therefore positive Along diode D2 and diode the D3 cut-off of string, no conductivity control signal is sent to the control terminal of switching tube 100, at this time the 4th voltage Whether type relay normally open contact KV43 is connected, switching tube 100 is turned off.At the 4th voltage-type relay normally open contact KV43 When disconnecting：Switching tube 100 use N-type metal-oxide-semiconductor, no matter the 3rd switch module K3 switch connection whether, N-type metal-oxide-semiconductor grid source Between equal no-voltage, N-type metal-oxide-semiconductor cut-off；Switching tube 100 use NPN type triode, no matter the switch connection of the 3rd switch module K3 Whether, the equal no current of base stage of NPN type triode, NPN type triode cut-off.

For switching tube 100 for for NPN type triode：It is disconnected when the switch of the 3rd switch module K3 is in, i.e. two poles When pipe D1 is in cut-off, if the switch of first switch module K1, which is in, connects (short circuit), the 4th voltage-type relay coil KV41 It is powered, i.e. the 4th voltage-type relay normally open contact KV43 is connected, then the power supply DC3 that alarms is through resistance R1, diode D2, diode D3 is diverted to NPN type triode base current, meets NPN type triode conducting saturation requirement, and NPN type triode turns on saturation, Otherwise, power supply DC3 no currents of alarming are diverted to NPN type triode base current through resistance R1, diode D2, diode D3 and are Zero, NPN type triode cut-off；When the switch connection of the 3rd switch module K3, i.e. when diode D1 is turned on, diode D1 anodes arrive The cathode current potential of alarm power supply DC3 is clamped at 0.7V or so, thus the diode D2 that anode connects with diode D1 anodes, The current potential of anode to alarm power supply DC3 cathode is equal to the current potential that diode D1 anodes are clamped to alarm power supply DC3, i.e. diode The current potential of D2 anodes to alarm power supply DC3 cathode is clamped at 0.7V or so, therefore positive along the diode D2 of string and diode D3 Obstructed, no current send the base stage of NPN type triode, whether no matter the 4th voltage-type relay normally open contact KV43 is connected at this time, I.e. at this time no matter first switch module K1 switch connection whether, NPN type triode is turned off.

For switching tube 100 for for N-type metal-oxide-semiconductor：It is disconnected when the switch of the 3rd switch module K3 is in, i.e. diode D1 During in cut-off, if the switch of first switch module K1, which is in, connects (short circuit), the 4th voltage-type relay coil KV41 is powered, That is the 4th voltage-type relay normally open contact KV43 is connected, then the power supply DC3 that alarms is through resistance R1, diode D2, diode D3, electricity Resistance R2 is divided to the gate-source voltage of N-type metal-oxide-semiconductor, meets the conducting saturation requirement of N-type metal-oxide-semiconductor, and N-type metal-oxide-semiconductor conducting saturation is no Then, alarm power supply DC3 cannot be divided to the grid of N-type metal-oxide-semiconductor, N-type through resistance R1, diode D2, diode D3, resistance R2 The gate-source voltage of metal-oxide-semiconductor is zero, the cut-off of N-type metal-oxide-semiconductor；When the switch connection of the 3rd switch module K3, i.e. diode D1 conductings When, the cathode current potential of diode D1 anodes to alarm power supply DC3 are clamped at 0.7V or so, so as to anode and diode D1 anodes The diode D2 to connect, the current potential of anode to alarm power supply DC3 cathode are equal to diode D1 anodes and are clamped to alarm power supply DC3 The current potential of the current potential of position, i.e. diode D2 anodes to alarm power supply DC3 cathode is clamped at 0.7V or so, therefore positive along the two of string Pole pipe D2 and diode D3 are obstructed, and no-voltage adds to the grid of N-type metal-oxide-semiconductor, and no matter the 4th voltage-type relay normally open touches at this time Point KV43 connect whether, i.e., at this time no matter first switch module K1 switch connection whether, N-type metal-oxide-semiconductor is turned off.

When switching tube 100 is in cut-off, then the 5th voltage-type relay coil KV51 no currents by, the 5th voltage-type after Electric appliance does not work, and the contact of the 5th voltage-type relay is in static state.

When switching tube 100 is on saturation, then the 5th voltage-type relay coil KV51 has electric current to pass through the 5th voltage Type relay works, and the contact of the 5th voltage-type relay is in dynamic.

When first switch module K1 switch be in disconnect, then the 4th voltage-type relay coil KV41 no currents by, 4th voltage-type relay does not work, and the contact of the 4th voltage-type relay is in static state.

When first switch module K1 switch be in connect, then the 4th voltage-type relay coil KV41 have electric current by, 4th voltage-type relay works, and the contact of the 4th voltage-type relay is in dynamic.

When assert that the 3rd switch module K3 is serviceable condition, in the 3rd switch module K3 in during switch disconnection：If Switching tube 100 ends, then the contact of the 4th voltage-type relay is in static state, illustrates that the switch of first switch module K1 is equally located It is intact in being broken as；If switching tube 100 turns on saturation, the contact of the 5th voltage-type relay is in dynamic, illustrates that first opens The switch for closing module K1 is in connection, and it is short-circuit that the present invention assert that the switch of first switch module K1 is in failure.

When assert that the 3rd switch module K3 is serviceable condition, during the 3rd switch module K3 is in switch connection：It opens It closes pipe 100 to end, and whether locates unrelated, i.e., the switch with first switch module K1 of dynamic with the contact of the 4th voltage-type relay Whether connect unrelated, therefore during the 3rd switch module K3 is in switch connection, the switch failure of first switch module K1 is short Whether detection control loop in road does not damage the switch of first switch module K1 detection identification.

Above-described solenoid valve undercurrent switching control circuit of stopping in emergency is used for：It is detected during stopping in emergency urgent During the coil undercurrent of electromagnetic valve for braking HV1, it is switched to spare solenoid valve HV2 and carries out emergency shut-down control device；Stop in emergency solenoid valve Undercurrent switching control circuit and by means of give detect the coil overcurrent for the solenoid valve HV1 that stops in emergency during stop in emergency when, switching Emergency shut-down control device is carried out to spare solenoid valve HV2.

The switch failure fault control circuit of above-described stop in emergency solenoid valve overcurrent and first switch module：For Stop in emergency during stopping in emergency solenoid valve HV1 coil overcurrent and non-emergent parking during first switch module switch failure When short-circuit, to stopping in emergency, Electromagnetic Valve Circuit carries out physical break protection, and to the physical break for the Electromagnetic Valve Circuit that stops in emergency It remains to and terminates (releasings) when removing parking power supply DC1 and stand-by power supply DC2, otherwise, to the solenoid valve time of stopping in emergency During the physical break protection on road is always held at diesel engine later stop in emergency period and non-emergent parking, that is, it is always maintained at In the entire implementation procedure after diesel engine.The coil overcurrent for the solenoid valve HV1 that stops in emergency is detected during stopping in emergency, The switch failure fault control circuit of solenoid valve overcurrent of then stopping in emergency and first switch module：To the Electromagnetic Valve Circuit that stops in emergency Physical break protection is carried out, and is always held in the later entire implementation procedure of diesel engine, waits to remove parking power supply DC1 and standby (releasing) is terminated with during power supply DC2；The switch failure short circuit of first switch module is detected during non-emergent parking, then promptly The switch failure fault control circuit of electromagnetic valve for braking overcurrent and first switch module：To stopping in emergency, Electromagnetic Valve Circuit carries out object Cut-out/holding tripping protection is managed, and is always held in the later entire implementation procedure of diesel engine, waits to remove parking power supply DC1 (releasing) is terminated with during stand-by power supply DC2；The switch failure short circuit of first switch module is detected during non-emergent parking, it is right The Electromagnetic Valve Circuit that stops in emergency carries out physical break protection, also solves the switch of first switch module K1 during non-emergent parking Failure short circuit causes the problem of emergency stop by mistake.When stopping in emergency, Electromagnetic Valve Circuit is in stop in emergency solenoid valve overcurrent and first switch The physical break guard mode that the switch failure fault control circuit of module carries out it, then when stopping in emergency to diesel engine, directly Solenoid valve undercurrent switching control circuit of stopping in emergency was connected, control is switched to spare solenoid valve HV2 and stops in emergency.

Fisrt fault indicator light MIL1 described above be used to stopping in emergency during stopping in emergency solenoid valve HV1 coil the Undercurrent prompting under the three non-disconnections of voltage-type relay normally closed contact KV33, when Fisrt fault indicator light MIL1 is lighted, The Electromagnetic Valve Circuit that illustrates to stop in emergency be likely to contact poor electrical resistance become larger or stop in emergency solenoid valve HV1 coil open circuit or should Circuit is breaking elsewhere, if the switch failure of first switch module is opened a way, also includes institute's power supply source certainly it is possible that damage is led It causes for stream deficiency.

Above-described second malfunction indicator lamp MIL2 is that the contact of tertiary voltage type relay is in operating state time point Bright, the second malfunction indicator lamp MIL2 is lighted, and illustrates stop in emergency the coil overcurrent of solenoid valve HV1 or/and first switch module K1 Switch failure short circuit：

The switch that above-described 4th malfunction indicator lamp MIL4 is used for the first switch module K1 during stopping in emergency loses Effect open circuit prompting when the 4th malfunction indicator lamp MIL4 is lit, illustrates the switch failure open circuit of first switch module K1.

Above-described 5th malfunction indicator lamp MIL5 stops for the switch of first switch module K1 diesel engine is non-emergent Short circuit of failing during vehicle is prompted, if diesel engine, during non-emergent parking, the switch failure of first switch module K1 is short-circuit, then point Otherwise bright 5th malfunction indicator lamp MIL5 keeps extinguishing.The present invention due to assert the 3rd switch module K3 be serviceable condition, therefore During diesel engine stops in emergency, the 5th malfunction indicator lamp MIL5 is in OFF state.

The 3rd malfunction indicator lamp MIL3 of the above is prompted when failing for the power supply DC1 that stops, when the 3rd event of parking power supply When barrier indicator light MIL3 is lighted, the power supply DC1 output voltages that illustrate to stop are less than first voltage type relay coil KV11 maintenance electricity It presses or equal to zero, here when parking power supply DC1 output voltages less than first voltage type relay coil KV11 maintenance voltages or wait Parking power supply DC1 failures (or halting vehicle power supply DC1 dead electricity or decompression) are regarded as when zero.

The rated voltage of first voltage type relay coil KV11 described above is more than the rated voltage of parking power supply DC1, Be conducive to the rated voltage for making first voltage type relay coil KV11 maintenance voltages close to parking power supply DC1, but ensure again The contact of first voltage type relay normally becomes dynamic from static, and the present invention selects first voltage type relay coil KV11's Rated voltage is equal to the 106% of the rated voltage of parking power supply DC1.

Above-described first voltage type relay two-way contact KV12, second voltage type relay normally open contact KV22, And the maximum current that tertiary voltage type relay normally closed contact KV33 is allowed to flow through is all higher than or equal to the volume for stopping power supply DC1 Constant current.

Above-described first current relay coil KI11：When the electric current flowed through is more than or equal to its rated current the The contact action of one current relay, i.e. normally opened contact are connected, and normally-closed contact disconnects；When the electric current flowed through is less than its specified electricity The contact of the first current relay is in static state during stream, i.e. normally opened contact disconnects, and normally-closed contact is connected.

Above-described second current relay coil KI21：When the electric current flowed through be more than its rated current when second electricity The contact action of flow pattern relay, i.e. normally opened contact are connected, and normally-closed contact disconnects；When the electric current flowed through is less than or equal to its specified electricity The contact of the second current relay is in static state during stream, i.e. normally opened contact disconnects, and normally-closed contact is connected.

The rated current of the first current relay coil KI11 of the above is set equal to the solenoid valve HV1 lines that stop in emergency The extinction current of circle；The rated current of the second current relay coil KI21 is set equal to the solenoid valve that stops in emergency The maximum allowed current of HV1 coils.

When stopping in emergency when the electric current that solenoid valve HV1 coils flow through of stopping in emergency in its extinction current to maximum allowable When between electric current, the present invention assert that the coil for the solenoid valve HV1 that stops in emergency is in normal operating conditions, and otherwise, identification promptly stops Vehicle Electromagnetic Valve Circuit breaks down.

The present invention assert that the output for the power supply DC1 that stops during the contact actuation (action) that can guarantee first voltage type relay is Normal output.

The parking power supply DC1 and stand-by power supply DC2 handoff procedures of a kind of above-described circuit that stops in emergency are as follows：

(1) the common port of first voltage type relay two-way contact KV12 and normally open end are connected, and parking power supply DC1 is to parking Loop power supply；

(1) the common port of first voltage type relay two-way contact KV12 is connected with normal-closed end, is switched to stand-by power supply (DC2) to parking loop power supply；

3) stand-by power supply DC2 to parking loop power supply during, wait stop power supply DC1 output revert to normal when, first Voltage-type relay coil KV11 obtains electric, the contact action of first voltage type relay：

Claims

The circuit 1. one kind is stopped in emergency, including parking power supply (DC1), stand-by power supply (DC2), alarm power supply (DC3), first voltage Type relay, second voltage type relay, tertiary voltage type relay, the 4th voltage-type relay, the 5th voltage-type relay, First current relay, the second current relay, the solenoid valve that stops in emergency (HV1), spare solenoid valve (HV2), the first event Hinder indicator light (MIL1), the second malfunction indicator lamp (MIL2), the 3rd malfunction indicator lamp (MIL3), the 4th malfunction indicator lamp (MIL4), the 5th malfunction indicator lamp (MIL5), first switch module (K1), second switch module (K2), the 3rd switch module (K3), switching tube (100), diode D1, diode D2, diode D3, resistance R1, resistance R2；It is characterized in that, described first Voltage-type relay coil (KV11) directly (DC1) and connects with parking power supply, anode and the first voltage type of parking power supply (DC1) The normally open end of relay two-way contact (KV12) is connected, and the anode and first voltage type relay of stand-by power supply (DC2) are two-way The normal-closed end of contact (KV12) is connected, and the cathode of stand-by power supply (DC2) is connected with the cathode of parking power supply (DC1)；First It is normally closed that current relay coil (KI11) is sequentially connected in series the second current relay coil (KI21), tertiary voltage type relay Contact (KV33), the coil of the solenoid valve that stops in emergency (HV1), first switch module (K1) switch after, the first current mode relay The other end of device coil (KI11) is connected with the common port of first voltage type relay two-way contact (KV12), first switch mould The other end of the switch of block (K1) is connected with the cathode of parking power supply (DC1), with parking power supply (DC1) or stand-by power supply (DC2) first parking circuit is formed, first parking circuit is the Electromagnetic Valve Circuit that stops in emergency；Second voltage type relay Device normally opened contact (KV22) be sequentially connected in series the coil of spare solenoid valve (HV2), second switch module (K2) switch after, second electricity The other end of die mould relay normally open contact (KV22) is connected with the common port of first voltage type relay two-way contact (KV12) It connects, the other end of the switch of second switch module (K2) is connected with the cathode of parking power supply (DC1), with parking power supply (DC1) Or stand-by power supply (DC2) forms Article 2 parking circuit, the Article 2 parking circuit is the spare Electromagnetic Valve Circuit that stops in emergency； Second current relay normally opened contact (KI22) and tertiary voltage type relay normally open contact (KV32) and the 5th voltage-type after After electric appliance normally opened contact (KV52) is connected with each other, one end concatenation tertiary voltage type relay coil (KV31) accesses first voltage afterwards The common port of type relay two-way contact (KV12), the cathode of other end access parking power supply (DC1), with parking power supply (DC1) Or stand-by power supply (DC2) forms Article 3 parking circuit, Article 3 parking circuit is solenoid valve overcurrent and the of stopping in emergency The switch failure fault control circuit of one switch module；One end of first current relay normally-closed contact (KI12) and the first electricity The common port of die mould relay two-way contact (KV12) is connected, after other end concatenation second voltage type relay coil (KV21) It accesses on the connecting line that spare solenoid valve (HV2) coil is switched with second switch module (K2), with parking power supply (DC1) or spare Power supply (DC2) forms Article 4 parking circuit, and the Article 4 parking circuit is returned for solenoid valve undercurrent switching control of stopping in emergency Road；One end of the 4th voltage-type relay coil (KV41) is public with first voltage type relay two-way contact (KV12) End is connected, and other end access is stopped in emergency on the connecting line that solenoid valve (HV1) coil is switched with first switch module (K1), with Parking power supply (DC1) or stand-by power supply (DC2) form Article 5 parking circuit, and the Article 5 parking circuit is first switch mould The switch on and off measure loop of block (K1)；First voltage type relay normally closed contact (KV13) concatenates the 3rd malfunction indicator lamp (MIL3) (DC3) and connect with alarm power supply afterwards, parking power-fail alarm circuit is formed with alarm power supply (DC3)；Tertiary voltage The common port of type relay two-way contact (KV34) is connected with the anode of alarm power supply (DC3), and tertiary voltage type relay is double Cathode of the second malfunction indicator lamp (MIL2) afterwards with alarm power supply (DC3) is concatenated to the normally open end of contact (KV34) to be connected, with Alarm power supply (DC3) composition stops in emergency Electromagnetic Valve Circuit by physical break protection alarm circuit；Tertiary voltage type relay The normal-closed end of two-way contact (KV34) is sequentially connected in series the first current relay normally-closed contact (KI13), Fisrt fault indicator light (MIL1), the cathode after the switch of the 3rd switch module (K3) with alarm power supply (DC3) is connected, with power supply (DC3) structure of alarming Into the solenoid valve undercurrent alarm circuit that stops in emergency；4th voltage-type relay normally closed contact (KV42) concatenates the 4th malfunction indicator lamp (MIL4) after, one end is connected with the anode of alarm power supply (DC3), other end access Fisrt fault indicator light (MIL1) and the 3rd On the connecting line of switch module (K3) switch, the switch failure that first switch module (K1) is formed with alarm power supply (DC3) is opened a way Detect alarm circuit；It is electric with alarm afterwards that 5th voltage-type relay normally open contact (KV53) concatenates the 5th malfunction indicator lamp (MIL5) Source (DC3) simultaneously connects, and the switch failure short-circuit alarming circuit of first switch module (K1) is formed with alarm power supply (DC3)；Switch (100) cold end is connected with the cathode of alarm power supply (DC3), and switch (100) hot end concatenates the 5th voltage-type relay Device coil (KV51) is connected with each other with one end of one end of resistance R1 and the 4th voltage-type relay normally open contact (KV43) afterwards, the The other end of four voltage-type relay normally open contacts (KV43) is connected with the anode of alarm power supply (DC3), and resistance R1's is another End is connected with each other with the anode of diode D1 and the anode of diode D2, the cathode access Fisrt fault indicator light of diode D1 (MIL1) on the connecting line switched with the 3rd switch module (K3), the cathode of diode D2 is connected with the anode of diode D3, The cathode of diode D3 and one end of resistance R2 and switching tube (100) control terminal are connected with each other, the other end of resistance R2 and alarm The cathode of power supply (DC3) is connected, and the switch failure short-circuit detecting that first switch module K1 is formed with alarm power supply (DC3) controls Circuit；The control terminal of the first switch module (K1), the control terminal of second switch module (K2) and the 3rd switch module (K3) Control terminal it is connected with each other after be connected with the output of diesel engine main control module；The switching tube (100) is N-type metal-oxide-semiconductor；Or institute Switching tube (100) is stated as NPN type triode.
The circuit 2. one kind according to claim 1 is stopped in emergency, which is characterized in that the first current relay coil (KI11) rated current is equal to the extinction current for solenoid valve (HV1) coil that stops in emergency；The second current mode relay The rated current of device coil (KI21) is equal to the maximum allowed current for solenoid valve (HV1) coil that stops in emergency.
The circuit 3. one kind according to claim 1 is stopped in emergency, which is characterized in that the first voltage type relay is double To contact (KV12), second voltage type relay normally open contact (KV22) and tertiary voltage type relay normally closed contact (KV33) maximum current allowed to flow through is equal to or the rated current more than parking power supply (DC1).
The circuit 4. one kind according to claim 2 is stopped in emergency, which is characterized in that the solenoid valve that stops in emergency (HV1) extinction current of coil is to refer to ensure the minimum current that solenoid valve (HV1) works normally of stopping in emergency.
The circuit 5. one kind according to claim 2 is stopped in emergency, which is characterized in that the solenoid valve that stops in emergency (HV1) maximum allowed current of coil is to refer to ensure the maximum functional that will not burn out the solenoid valve that stops in emergency (HV1) coil Electric current.
The circuit 6. one kind according to claim 1 is stopped in emergency, which is characterized in that the switching tube (100) is N-type During metal-oxide-semiconductor, the grid of N-type metal-oxide-semiconductor is the control terminal of switching tube (100), and the drain electrode of N-type metal-oxide-semiconductor is electric for the height of switching tube (100) Position end, the source electrode of N-type metal-oxide-semiconductor are the cold end of switching tube (100)；When the switching tube (100) is NPN type triode, The base stage of NPN type triode is the control terminal of switching tube (100), and the height of the current collection extremely switching tube (100) of NPN type triode is electric Position end, the cold end of the transmitting extremely switching tube (100) of NPN type triode.
The circuit 7. one kind according to claim 1 is stopped in emergency, which is characterized in that diode D1, the diode D2 And diode D3 is switching diode；The N-type metal-oxide-semiconductor is the enhanced metal-oxide-semiconductor of N-channel；The NPN type triode is NPN type switching transistor.
8. a kind of implementation method of circuit that stops in emergency according to claims 1 to 3 any bar, which is characterized in that including Following steps:

First, stop power supply (DC1) and stand-by power supply (DC2) handoff procedure

1) when stop power supply (DC1) export for it is normal when, first voltage type relay coil (KV11) it is electric, first voltage type after The contact action of electric appliance：

(1) the common port of first voltage type relay two-way contact (KV12) and normally open end are connected, and parking power supply (DC1) is to parking Loop power supply,

(2) first voltage type relay normally closed contact (KV13) disconnects, and the 3rd malfunction indicator lamp (MIL3) is extinguished；

2) when the power supply (DC1) that stops fails, first voltage type relay coil (KV11) dead electricity, first voltage type relay Contact reverts to static state：

(1) the common port of first voltage type relay two-way contact (KV12) is connected with normal-closed end, is switched to stand-by power supply (DC2) To parking loop power supply,

(2) first voltage type relay normally closed contact (KV13) is connected, and the 3rd malfunction indicator lamp (MIL3) is lighted, and user is prompted to stop Vehicle power supply (DC1) fails；

2nd, the process of stop in emergency solenoid valve (HV1) and spare solenoid valve (HV2) is controlled

1) assert second switch module (K2) and the 3rd switch module (K3) be it is intact, first switch module (K1) quality be set to for It is unknown：

When diesel engine main control module is sent out to first switch module (K1) and second switch module (K2) and the 3rd switch module (K3) During going out emergency shut-down control device signal, the switch connection of second switch module (K2), the switch connection of the 3rd switch module (K3), Whether the switch of first switch module (K1) is connected to be unknown,

When diesel engine main control module is not to first switch module (K1) and second switch module (K2) and the 3rd switch module (K3) During sending emergency shut-down control device signal, the switch of second switch module (K2) disconnects, and the switch of the 3rd switch module (K3) breaks It opens, it is unknown whether the switch of first switch module (K1) is broken as；

2) when the switch connection of first switch module (K1), the 4th voltage-type relay coil (KV41) is powered, the 4th voltage-type The contact of relay is in dynamic, i.e. the 4th voltage-type relay normally closed contact (KV42) disconnects, and the 4th voltage-type relay is normal Open contact (KV43) connection；

3) when the switch disconnection of first switch module (K1), the 4th voltage-type relay coil (KV41) no power, the 4th voltage The contact of type relay is in static state, i.e. the 4th voltage-type relay normally closed contact (KV42) is connected, the 4th voltage-type relay Normally opened contact (KV43) disconnects；

4) when the 3rd switch module (K3) switch in an ON state, no matter whether the switch of first switch module (K1) is in It disconnects, i.e., no matter whether the contact of the 4th voltage-type relay is in static state, the 5th equal no power of voltage-type relay, the 5th electricity The contact of die mould relay is in static state, and control signal is not generated to tertiary voltage type relay, and controls the 5th indicating fault Lamp (MIL5) is extinguishing；

5) when the switch of the 3rd switch module (K3) is off, and the switch of first switch module (K1) is in and disconnects, I.e. the contact of the 4th voltage-type relay is in static state, then the 5th voltage-type relay no power, the 5th voltage-type relay Contact is in static state, and control signal is not generated to tertiary voltage type relay, and controls the 5th malfunction indicator lamp (MIL5) to put out It goes out；

6) when the switch of the 3rd switch module (K3) is off, and the switch of first switch module (K1) is in and connects, I.e. the contact of the 4th voltage-type relay is in dynamic, then the 5th voltage-type relay power, and the 5th voltage-type relay touches Point is in dynamic：

(1) the 5th voltage-type relay normally open contact (KV52) is connected, and control signal is generated to tertiary voltage type relay, if the Three voltage-type relays are in energization self-locking, then tertiary voltage type relay remains powered on self-locking, otherwise, trigger tertiary voltage type Relay power and self-locking,

(2) the 5th voltage-type relay normally open contact (KV53) is connected, and lights the 5th malfunction indicator lamp (MIL5), and user is prompted to exist The switch failure short circuit of first switch module (K1) during non-emergent parking；

7) when the 3rd switch module (K3) switch in an ON state when, if the 4th voltage-type relay normally closed contact (KV42) It connects, then lights the 4th malfunction indicator lamp (MIL4), prompt the switch failure open circuit of user's first switch module (K1)；

8) when the second current relay detects the maximum allowed current more than solenoid valve (HV1) coil that stops in emergency, the The contact of two current relay enters dynamic, i.e. the second current relay normally opened contact (KI22) is connected, to tertiary voltage Type relay generates control signal, if tertiary voltage type relay is in energization self-locking, tertiary voltage type relay keeps logical Electric self-locking, otherwise, triggering tertiary voltage type relay power and self-locking；

9) when the second current relay does not detect the maximum allowed current more than solenoid valve (HV1) coil that stops in emergency When, the contact of the second current relay is in static state, i.e. the second current relay normally opened contact (KI22) disconnection, not to the Three voltage-type relays generate control signal；

10) it is powered when tertiary voltage type relay is in, i.e., the contact of tertiary voltage type relay is in dynamic：

(1) the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, to promptly stopping Vehicle Electromagnetic Valve Circuit carries out physical break protection,

(2) the common port of tertiary voltage type relay two-way contact (KV34) is connected with normally open end, lights the second malfunction indicator lamp (MIL2), prompting user stop in emergency solenoid valve (HV1) coil overcurrent or/and first switch module (K1) switch failure it is short Road：

1. when the second malfunction indicator lamp (MIL2) is lit during diesel engine stops in emergency by extinguishing, illustrate the electromagnetism that stops in emergency The coil overcurrent of valve (HV1),

2. when the second malfunction indicator lamp (MIL2) is lit during the non-emergent parking of diesel engine by extinguishing, illustrate first switch mould The switch failure short circuit of block (K1),

3. stopping in emergency when in diesel engine with during non-emergent parking, the 5th malfunction indicator lamp (MIL5) is always maintained at extinguishing shape State, then, the second malfunction indicator lamp (MIL2) lighted, the coil overcurrent for the solenoid valve (HV1) that illustrates to stop in emergency,

4. after the second malfunction indicator lamp (MIL2) is lighted during diesel engine stops in emergency by extinguishing, the 5th malfunction indicator lamp (MIL5) can be lit during non-emergent parking, then it is follow-up in the second malfunction indicator lamp (MIL2) lighted, illustrate urgent The switch failure short circuit of the coil overcurrent and first switch module (K1) of electromagnetic valve for braking (HV1),

5. after the second malfunction indicator lamp (MIL2) is lighted during the non-emergent parking of diesel engine by extinguishing, then follow-up be in is lighted The second malfunction indicator lamp (MIL2), illustrate first switch module (K1) switch failure short circuit；

11) when stop in emergency Electromagnetic Valve Circuit by electric current be less than the minimum of solenoid valve (HV1) coil that stops in emergency and maintain electricity During stream, the contact of the first current relay is in static state, and the first current relay normally-closed contact (KI12) is connected, the first electricity Flow pattern relay normally closed contact (KI13) is connected：

First current relay normally-closed contact (KI12) connect and second switch module (K2) switch in an ON state When, second voltage type relay coil (KV21) must be electric, and the contact of second voltage type relay is become dynamically from static state, i.e., and second Voltage-type relay normally open contact (KV22) is connected, and spare solenoid valve (HV2) obtains magnetic, and control diesel engine stops in emergency,

First current relay normally-closed contact (KI13) connect, the switch of the 3rd switch module (K3) in an ON state, And the contact of tertiary voltage type relay is in static state, i.e., the common port of tertiary voltage type relay two-way contact (KV34) with it is normal When closed end is connected, then Fisrt fault indicator light (MIL1) is lighted, tertiary voltage type relay is normal during prompting user is stopped in emergency Closed contact (KV33) is in connect in the case of stop in emergency the coil undercurrent of solenoid valve (HV1),

(3) the first current relay normally-closed contact (KI13) is connected, if the contact of tertiary voltage type relay is in dynamic, i.e., The common port of tertiary voltage type relay two-way contact (KV34) is disconnected with normal-closed end, no matter the switch of the 3rd switch module (K3) Whether connection, Fisrt fault indicator light (MIL1) extinguishes；

12) when flow through the solenoid valve that stops in emergency (HV1) coil electric current be less than or equal to its maximum allowed current, more than or equal to it most During small maintenance electric current, the solenoid valve that stops in emergency (HV1) obtains magnetic, and control diesel engine stops in emergency.
9. the implementation method of a kind of circuit that stops in emergency according to claim 8, which is characterized in that further include following step Suddenly:

In stand-by power supply (DC2) to during parking loop power supply, when power supply (DC1) output of stopping reverts to normal, first is electric Die mould relay coil (KV11) obtains electric, the contact action of first voltage type relay：

(1) the common port of first voltage type relay two-way contact (KV12) and normally open end are connected, recover parking power supply (DC1) to Stop loop power supply；

(2) first voltage type relay normally closed contact (KV13) disconnects, and the 3rd malfunction indicator lamp (MIL3) lighted is extinguished.
A kind of 10. implementation method of circuit that stops in emergency according to claim 8, which is characterized in that the 3rd electricity After die mould relay power self-locking, wait to remove parking power supply (DC1) and stand-by power supply (DC2), tertiary voltage type relay touches Point is static state by Dynamic- Recovery.