CN102111137A

CN102111137A - Safe control time-base circuit

Info

Publication number: CN102111137A
Application number: CN2010101429389A
Authority: CN
Inventors: 刘圣平
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-09
Filing date: 2010-04-09
Publication date: 2011-06-29
Anticipated expiration: 2030-04-09
Also published as: CN102111137B

Abstract

The invention belongs to a safe control time-base circuit guaranteeing the safety of an over-limitation control circuit or an timing control circuit in case of breakdown through preventing out-of-control, and the safe control time-base circuit is applied to temperature control electric apparatus, pressure control electric apparatus, water stage control electric apparatus and timing control electric apparatus, for improving the safety performance and avoiding serious accidents (fire, for example) during use. The following technical measure is taken for realizing the excellent function: most importantly, electronic devices are connected in a smart way to simply constitute a base-assembled master control circuit, a base-supported top-shielded protection and control circuit, a series-control propel executive circuit and a protection and control display circuit, wherein the base-assembled master control circuit and the base-supported top-shielded protection and control circuit are connected in parallel with signals output by a detection sensing circuit or a timing circuit. The protect loading of the base-supported top-shielded protection and control circuit monitors the control level output by the base-assembled master control circuit, so as to close the out-of-control level output by the master control circuit at first in case of breakdown and force the executive circuit to cut loading supply, thus the safety is guaranteed. Therefore, the safe control time-base circuit can be widely used in the field of electric application, and enables the electric apparatus to have high performance-price ratio.

Description

The security control time-base circuit

Technical field

The present invention relates to a kind of control circuit/time-base circuit, relate in particular to a kind of master control (up and down super spacing control) or timing control circuit security control time-base circuit not out of control when fault of guaranteeing, be applied in temperature, pressure, water level, the timing controlled electrical equipment, can improve security performance, serious accident (as fire) takes place when avoiding using.Therefore, the present invention at small household appliances and ordinary surveying, regularly, electronic application field purposes such as control, security protection is wider, and makes electric equipment products/price ratio high.

Background technology

In order to examine novelty of the present invention, the designer has consulted a large amount of correlation technique data (professional book, newpapers and periodicals), has retrieved relevant patent documentation.All have only discovery only to finish the circuit more (is exactly its classical representative as 555 time-base circuits) of master control (super spacing control up and down) function, never find to relate to abnormal failure is monitored, governor circuit is monitored (protection control), prevented unusual correlation technique data out of control.

At present, electronic application field be used widely through canonical form 555 time-base circuits, as most basic versatility function element, enjoy electronic application professional designer and electrophile's favor, and now having obtained the common approval of academia, its structure and principle have become the most important theories in university's electronics specialty " digital circuit " textbook.

Though it is, of many uses through canonical form 555 time-base circuit highly versatiles.But have only single master control (super spacing control up and down) function, internal structure is complicated, roughly is made up of five parts such as voltage divider, comparator, R-S trigger, rp-drive, discharge switch.8 of leading foot positions are if CMOS type 555 circuit are also wanted many two inverters (is used to reset, and another is located between R-S trigger Q end and the driver).Its principle is: voltage divider is provided with upper and lower bound; comparator will import current potential and upper and lower bound is made comparisons; if the input current potential exceeds the upper limit or lower limit current potential; two comparators trigger the R end or the S end of R-S trigger respectively; Q end output respective electrical mean longitude driver output control load; this control procedure and principle; can only finish super spacing controlled function up and down; there is not the error protection controlled function fully; be void item, have not good part in addition on performance, it is improper that reset terminal MR (the 4th pin) reset potential is provided with; and discreteness is too big, can not make comparisons with the input current potential again.Control end VC (the 5th pin) upper limit of can only transfering to other localities, lower limit is built-in fixing, and the VC direct-to-ground capacitance is essential.

Summary of the invention

The present invention mainly solve original master control (transfinite position control) circuit and timing circuit often out of control because of abnormal failure, can not in time cut off electric, have the technical problem of hidden danger safe in utilization; A kind of error protection controlled function that has is provided, can monitors abnormal failure and in time cut off electric, guarantee that governor circuit is not out of control, avoid a nasty accident (as fire) takes place, and guarantees security control time-base circuit safe in utilization.

The present invention solves original realization reset potential of the reset terminal of controlled function circuit that transfinites simultaneously and is provided with improperly, and discreteness is too big, the technical problem that performance is not good; A kind of defencive function double as reset function is provided, need not other ad hoc reset function pin, save the pin resource, reduce discreteness, improve the security control time-base circuit of performance.

Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: the present invention includes sensing circuit or integrating circuit (1), comprise that also joining end formula governor circuit (6), backing protects that control circuit (8) is protected on the top, the string control promotes executive circuit and protects control display circuit (9); Described sensing circuit or (RC) output of integrating circuit connect and to join the input (V of end formula governor circuit _i) and backing protect the input (V that control circuit is protected on the top _i), the described output (V that joins end formula governor circuit _O) connect backing and protect the top and protect the lowest limit of control circuit the control input end that control input end and string control promote executive circuit and protect the control display circuit is set, backing protects the output (V that control circuit is protected on the top _C) promote executive circuit and protect another control input end of controlling display circuit to link to each other with the string control, the output of executive circuit (relay) links to each other with the power supply circuits of electrothermal load.

Described sensing circuit can be that temperature sensor or pressure sensor or liquid level sensor are the circuit that main part constitutes, and described integrating circuit is the resistance RC integrating circuit that charging constitutes to electric capacity; The described end formula governor circuit of joining can be with operational amplifier or voltage comparator, perhaps XOR gate or with door or or door or homophase door be the circuit that main part constitutes, also can be that other device with its function equivalent is the circuit that main part constitutes; Described backing protects the top, and to protect control circuit be to be the circuit that main part constitutes with operational amplifier or voltage comparator or XOR gate or biconditional gate, also can be that other device with its function equivalent is the circuit that main part constitutes; It is by two triodes series connection control relay power supplys or by a triode and operational amplifier or voltage comparator output string controlled relay power supply or by two analog switches series connection control relay power supplys or directly to go here and there the controlled relay power supply by two operational amplifiers or voltage comparator output be the circuit that main part constitutes that described string control promotes executive circuit; It is the circuit that is made of a resistance series connection LED that described guarantor is controlled display circuit, and the described end formula governor circuit threshold value reference voltage (Vm) of joining also can be controlled by semistor PTC; Described end formula governor circuit and the backing of joining protects the top to protect the supply voltage of control circuit is V+1, and the external circuit supply voltage is V+, establishes voltage V+ and is higher than voltage V+1.

When the circuit operate as normal, when sensing circuit or integrating circuit output signal current potential in setting range (between upper and lower limit is spacing) change, backing protects the top and protects control circuit along with joining end formula governor circuit circulation output high-low level, make string control promote executive circuit and be in the normal circulation state of a control, and backing protects the top and protects control circuit and be in the garrison monitor state at any time.

When sensing circuit or integrating circuit generation abnormal failure (as transducer or charging capacitor short circuit or open circuit); its output signal current potential fell that to join end formula governor circuit be that backing protects the top and protects the lowest limit that control circuit sets or surpass the top limit; make governor circuit output out-of-control signal; and backing protects the top and protects control circuit and be triggered; transfer the priority protection state of a control to by the garrison state; close the out-of-control signal of joining end formula governor circuit; force the string control to promote executive circuit and protect and control display circuit; show fault; and cut-out load power source; effectively reliably prevent and governor circuit phenomenon out of control when having avoided abnormal failure to take place, guaranteed control safety.

When the input and output side open fault took place circuit itself, this circuit also had the control of guarantor effect.Allow and join end formula governor circuit and backing and protect the top and protect control circuit and meet supply voltage V+1 less than external circuit (sensing circuit or integrating circuit and string control promote executive circuit and protect to control display circuit) supply voltage V+, in order to prevent that unusual disconnection of the input of circuit own from causing out of control and design, further improved the fail safe of controlling.

In addition, can also allow two element circuits work side by side, divide the open string control to promote executive circuit (relay) input signal potential, the output of surveying sensing circuit or integrating circuit output in parallel, improve the reliability of control again greatly.

Beneficial effect of the present invention:

1. owing to adopt backing to protect the top to protect control circuit and protect and carry monitoring and join end formula governor circuit signal, make guarantor's control circuit preferential control be arranged to governor circuit, when sensing circuit or integrating circuit generation open circuit or short trouble, force the string control to promote to carry out and guarantor's control display circuit, show fault, and cut-out load power source, can prevent effectively reliably governor circuit because of abnormal failure cause out of control, improved the security performance of control circuit, have important practical value, therefore, the present invention has very strong comprehensively anti-ability out of control, surmount 555 time-base circuit function and performances, versatility is stronger, performance is more superior, purposes is more extensive.

2. because circuit connects ingenious, simple in structure, the principle novelty, the function uniqueness, one 8 pin circuitry module can be held two separate unit circuit, because of each separate unit circuit has only three ends (goes into scene 2), an end multipotency: a signal input part also has the upper limit, the spacing setting of lower limit and reset function concurrently, need not the ad hoc spacing end that is provided with in addition; An important output is that backing protects the output that control circuit is protected on the top, has anti-function out of control; Another output is to join end formula (spacing up and down) master control output (all functions of compatible 555 time-base circuits fully), go back the double as backing simultaneously and protect the reseting controling end that control circuit is protected on the top, therefore, but the present invention's flexible adaptation various control is required, bring great convenience to Application Design, make that the electronic system product cost is extremely low, property/price ratio is higher.

Description of drawings

Fig. 1 is a schematic block circuit diagram of the present invention.

Fig. 2 is the physical circuit schematic diagram of the embodiment of the invention 1

Fig. 3 is the physical circuit schematic diagram of the embodiment of the invention 2.

Fig. 4 is the physical circuit schematic diagram of the embodiment of the invention 3.

Fig. 5 is the physical circuit schematic diagram of the embodiment of the invention 4.

Fig. 6 is the physical circuit schematic diagram of the embodiment of the invention 5.

Among Fig. 1: (1) is sensing circuit or integrating circuit, and (6) for joining end formula governor circuit, (8) protect control circuit for backing protects the top, and (9) promote executive circuit and protect the control display circuit for the string control.

Embodiment

Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.

The schematic block circuit diagram of embodiment 1 to 5, as shown in Figure 1, (1) is sensing circuit or integrating circuit, and (6) for joining end formula governor circuit, (8) protect control circuit for backing protects the top, and (9) promote executive circuit and protect the control display circuit for the string control.Described end formula governor circuit (6) and the backing of joining protects the tie point (V that the signal input part of control circuit (8) is protected on the top _i) be connected the described output (V that joins end formula governor circuit (6) with the output of sensing circuit or integrating circuit (1) _O) connect backing and protect the top and protect the lowest limit of control circuit (8) control input end that control input end and string control promote executive circuit and protect control display circuit (9) is set, backing protects the output (V that control circuit (8) is protected on the top _C) promote executive circuit and protect another control input end of controlling display circuit (9) to link to each other with the string control; The output of executive circuit (relay) links to each other with the power supply circuits of load.

Embodiment 1:

The physical circuit schematic diagram of present embodiment, as shown in Figure 2, sensing circuit or integrating circuit (1) comprise thermistor NTC2 series resistor R21, or resistance R p2 serial connection capacitor C 21, join end formula governor circuit (6) and comprise integrated operational amplifier or voltage comparator B 21 and resistance R 22, R26, R27, R28, thermistor PTC2, backing protects top guarantor's control circuit (8) and comprises operational amplifier or voltage comparator B 22, resistance R 211, string control promote executive circuit and protect control display circuit (9) to comprise triode VT21, VT22, resistance R 23, R24, R25, R29, R210, relay J 2, diode D21, LED 2.

Fig. 2 circuit connecting mode: the thermistor NTC2 one termination power V+ utmost point, other end connecting resistance R21, resistance R 21 other end ground connection, or resistance R p2 one termination power V+, another termination capacitor C 21 positive poles, capacitor C 21 minus earths, it connects dividing point (V _I20) the tie point (V of anti-phase (-) input through being connected in series spacing positive (+) input that is connected to operational amplifier or voltage comparator B 21 after resistance R 22 is set again and operational amplifier or voltage comparator B 22 _I21) on; Resistance R 27 1 end ground connection, other end connecting resistance R28, resistance R 28 another termination thermistor PTC2, another termination power of thermistor PTC2 V+1 utmost point, resistance R 27 and R28 tie point (V _M2) be connected to anti-phase (-) input of operational amplifier or voltage comparator B 21; The output of operational amplifier or voltage comparator B 21 is connected to same potential point (V with positive (+) input of operational amplifier or voltage comparator B 22 and resistance R 24, R25, R26 again after serial connection lowest limit configuration resistance R 212 _O2) on, as the output (V that joins end formula governor circuit (6) _O2), another termination power V+ utmost point of resistance R 24 wherein, another termination triode VT21 base stage of resistance R 25, positive (+) input (V of another termination operational amplifier of resistance R 26 or voltage comparator B 21 _I21) on; Anti-phase (-) input (V of operational amplifier or voltage comparator B 22 _I21) series resistor R211 over the ground, the output (V of operational amplifier or voltage comparator B 22 _C2) connect resistance R 29, R210, another termination power V+ utmost point of resistance R 210, resistance R 29 another termination triode VT22 base stages; Triode VT21 emitter connects the power supply V+ utmost point, triode VT21 collector connecting transistor VT22 emitter, and triode VT22 collector connecting relay J2 coil and diode D21 negative pole, the diode D21 positive pole and the relay J 2 coil other ends are ground connection all; Resistance R 23 connects triode VT22 emitter, resistance R 23 other end sending and receiving optical diode LED2 positive poles, and LED 2 negative poles connect triode VT22 collector electrode; It is spacing that the ratio of the resistance of adjusting resistance R 22, R26 can be set governor circuit B21 upper and lower bound, the dividing point (V of resistance R 27, R28 _M2) can set governor circuit B21 threshold value reference voltage; Operational amplifier or voltage comparator B 21, the B22 power supply termination power V+1 utmost point, external circuit connects the power supply V+ utmost point, and power supply V+ pole tension is higher than power supply V+1 pole tension.

Fig. 2 circuit working principle: at the beginning of circuit powered on, because of thermistor NTC2 is in the low temperature high-impedance state, or capacitor C 21 both end voltage were lower, make dividing point V _I20Above earth potential is lower, through spacing setting resistance R 22 liftings, still makes circuit input end (Vi21) current potential also lower, anti-phase (-) input (V of less-than operation amplifier B21 _M2) current potential, its output (V _O2) output LOW voltage, through resistance R 25 pulling triode VT21 conductings, this moment, operational amplifier or voltage comparator B 22 were lower than the input (V of its anti-phase (-) because of positive (+) input terminal voltage _I21) voltage, its output (Vc ₂) output low level, pulling triode VT22 conducting makes relay J 2 adhesives, its contacting load power source, and load begins to heat up.Triode VT22 conducting, LED 2 is not luminous, indication circuit operate as normal fault-free, backing protects top guarantor's control circuit and is in the garrison state.

Behind the power on circuitry certain hour, NTC2 rises with load temperature because of thermistor, and resistance diminishes, dividing point V _I20Current potential rises, or capacitor C 21 the two poles of the earth also can make dividing point V along with charging voltage rises in the integrating circuit _I20Current potential rises, V _I21Current potential also rises to greater than V thereupon _M2During voltage, operational amplifier or voltage comparator B 21 output V _O2The output high potential, operational amplifier or voltage comparator B 22 are also along with output V _C2The output high potential all ends triode VT21, VT22, and resistance R 24, R210 more help output V _O2, V _C2The current potential lifting ends the triode degree of depth, and relay J 2 coil blackouts discharge (back-emf is eliminated by D21) normally opened contact and cut off load power source, and temperature descends, and the NTC2 resistance becomes greatly gradually, V _I20Voltage descends, and works as V _I21Current potential descends less than V _M2During voltage, output V _O2, V _C2The intensification of switching on again of output low level again, pulling triode VT21, all conductings of VT22, relay J 2 adhesives, load, circuit enters next temperature control cyclic process.Between upper and lower limit, carry out in the normal circulation temperature control process, or regularly, protect control circuit and be in the garrison state all the time.

When sensing circuit breaks down (as thermistor NTC2 open circuit or resistance R 21 short circuits), or timing capacitor C21 is when being short-circuited, V _I20And V _I21Potential pole is low, output V _O2Also be electronegative potential, triode VT21 conducting out of control, but owing to join the output (V of end formula governor circuit (6) _O2) current potential (having certain substrate to add resistance R 212 hovers) is a little more than input (V _I21) current potential, so operational amplifier or voltage comparator B 22 output Vc ₂The output high level ends triode VT22, forces the release of still cutting off the power supply of relay J 2 coils; cut off load power source, reached the purpose that prevents that triode VT21 is out of control, guaranteed security control; LED 2 is luminous simultaneously, shows that backing protects top guarantor's control circuit and is in the error protection state.

When NTC2 short circuit of sensing circuit generation thermistor or resistance R 21 open faults, or open fault is when taking place in timing capacitor C21, and input Vi20 and Vi21 current potential are high, output (V _O2) current potential is also high, triode VT21 ends, and at this moment, the effect of resistance R 211 is that input Vi21 current potential is dragged down slightly, makes operational amplifier or voltage comparator B 22 output (V _C2) the output high potential, triode VT22 is also ended simultaneously, force relay J 2 reliable outages to discharge, its normally opened contact cuts off load power source, reaches to prevent purpose out of control, has guaranteed security control.

When the input and output side open fault took place circuit itself, this circuit also had the control of guarantor effect.Operational amplifier or voltage comparator B 21, B22 meet supply voltage V+1 less than external circuit supply voltage V+, cause out of control and designs in order to prevent unusual disconnection of the input of circuit own, have further improved the fail safe of controlling.

As seen, present embodiment has comprehensively anti-ability out of control, surmounts the function and the performance of 555 time-base circuits, so be called the security control time-base circuit.

Embodiment 2:

The physical circuit schematic diagram of present embodiment, as shown in Figure 3, sensing circuit or integrating circuit (1) comprise thermistor NTC3 series resistor R31, or resistance R p3 serial connection capacitor C 31, join that end formula governor circuit (6) comprises or door, perhaps with door, perhaps homophase door H3 and resistance R 32, R36, backing protects top guarantor's control circuit (8) and comprises voltage comparator exclusive disjunction amplifier A3, resistance R 38, string control promote executive circuit and protect control display circuit (9) to comprise triode VT31, VT32, diode D31, resistance R 35, R37, relay J 3, resistance R 33, LED 3.

Fig. 3 circuit connecting mode: thermistor NTC3 one end ground connection, other end connecting resistance R31, resistance R 31 another termination power V+ utmost points, or resistance R p3 one end ground connection, another termination capacitor C 31 negative poles, capacitor C 31 positive poles connect the power supply V+ utmost point, and it connects dividing point (V _I30) through spacing be provided with that resistance R 32 is connected to or door or with anti-phase (-) input (V of door or two inputs of homophase door H3 and voltage comparator exclusive disjunction amplifier A3 _I31), voltage comparator exclusive disjunction amplifier A3 positive (+) input termination or door H3 output (V _O3), anti-phase (-) input (V of resistance R 38 1 termination voltage comparator exclusive disjunction amplifier A3 _I31), another termination power V+1 utmost point, resistance R 36 cross-over connections in or the door H3 input (V _I31) and output (Vo ₃) between, resistance R 35 cross-over connections are in operational amplifier A 3 output (Vc ₃) and triode VT32 base stage between, resistance R 37 cross-over connections in or door H3 output (V _O3) and triode VT31 base stage between, triode VT32 grounded emitter, collector connecting transistor VT31 emitter, triode VT31 collector connecting relay J3 coil and diode D31 positive pole, the diode D31 negative pole and the relay J 3 coil other ends all are connected on the power supply V+ utmost point, and LED 3 negative poles meet operational amplifier A 3 output (V _C3), LED 3 anodal connecting resistance R33, resistance R 33 another terminations or door H3 output (V _O3), it is spacing that the ratio of resistance R 32 and R36 is set the upper and lower bound of H3, operational amplifier A 3 and or the door H3 power supply termination power V+1 utmost point, external circuit connects the power supply V+ utmost point, power supply V+ pole tension is higher than power supply V+1 pole tension.

Fig. 3 circuit working principle: at the beginning of circuit powered on, because of thermistor NTC3 is in the low temperature high-impedance state, or capacitor C 31 both end voltage were lower, make dividing point V _I31Above earth potential is higher, through spacing resistance R 32 liftings, the input V of being provided with _I31Current potential is also higher, greater than or door H3 input threshold voltage (≈ 1/2V ₊), or door H3 output V _O3The output high level feeds back to V through feedback resistance R36 on the one hand _I31, make V _I31Current potential is higher, and locks this state, V on the other hand _O3High level promotes triode VT31 conducting through resistance R 37, also makes operational amplifier A 3 output high level simultaneously, promotes triode VT32 conducting through resistance R 35, so load power source is connected in relay J 3 energising adhesives, load temperature raises.Output V _O3And V _C3All be high level, LED3 is not luminous, and the expression backing protects top guarantor's control circuit and is in the garrison state.

Circuit powers on behind the certain hour, and NTC3 rises with load temperature because of thermistor, and resistance diminishes, dividing point V _I30Current potential descends, or 31 liang of pole tensions increases of capacitor C, also can make V _I30Current potential descends, V _I31Current potential also drop to thereupon less than or door H3 threshold voltage (≈ 1/2V ₊) time, or door H3 output electronegative potential is locked through resistance R 36 and to be made V _I31Current potential is lower, and locks this state.Vo ₃On the one hand triode VT31 is ended, relay J 3 discharges (back-emf is eliminated by D31), cuts off load power source, and load begins cooling, and the NTC3 resistance becomes again greatly, input V _I31Current potential rise greater than or door H3 threshold voltage (≈ 1/2V ₊) time, or a door H3 exports high level again, makes the conductings simultaneously of two triodes, promotes relay J 3 adhesives, the load intensification of switching on again, and circuit enters next temperature control cyclic process.Between upper and lower limit, carry out in the normal circulation temperature control process, or regularly, backing protects top guarantor's control circuit and is in the garrison state all the time.

When sensing circuit generation abnormal failure (as thermistor NTC3 open circuit or resistance R 31 short circuits), or timing capacitor C31 is when being short-circuited, V _I30And V _I31Potential rise is to high (near V+), operational amplifier A 3 input (V _I31) current potential is higher than its output (V _O3) current potential, operational amplifier A 3 output (V _C3) the output electronegative potential, triode VT32 is ended, relay J 3 discharges, and load is cut off the power supply, and still reaches anti-purpose out of control, has guaranteed security control, and LED 3 is luminous simultaneously, shows that backing protects top guarantor's control circuit and is in the error protection state.

When NTC3 short circuit of sensing circuit generation thermistor or resistance R 31 open faults, or open fault is when taking place in timing capacitor C31, and input Vi30 and Vi31 potential pole are low, output (V _O3) current potential also is electronegative potential, triode VT31 ends, and at this moment, the effect of resistance R 38 is input Vi31 current potential to be promoted slightly (make the Vi31 terminal potential a little more than V _O3Terminal potential), make operational amplifier or voltage comparator A3 output (V _C3) also export electronegative potential, triode VT32 is also ended simultaneously, force relay J 3 reliable outages to discharge, its normally opened contact cuts off load power source, reaches to prevent purpose out of control, has guaranteed security control.

When the input and output side open fault took place circuit itself, this circuit also had the control of guarantor effect.Operational amplifier or voltage comparator A3 and or a door H3 meet supply voltage V+1 less than external circuit supply voltage V+, cause out of control and design in order to prevent unusual disconnection of the input of circuit own, further improved the fail safe of controlling.

Embodiment 3:

The physical circuit schematic diagram of present embodiment, as shown in Figure 4, sensing circuit or integrating circuit (1) comprise thermistor NTC4 series resistor R41, or resistance R P4 serial connection capacitor C 41, join that end formula governor circuit (6) comprises or door, perhaps with door, perhaps homophase door buffer H4 and resistance R 42, R46, backing protects top guarantor's control circuit (8) and is operational amplifier or voltage comparator B 4, resistance R 48, the string control promotes executive circuit and protects the control display circuit to comprise triode VT41, VT42, diode D41, relay J 4, resistance R 43, R44, R45, R47, LED 4, joining end formula governor circuit (6) and backing protects the top and protects control circuit (8) and connect power supply V+1 end, sensing circuit or integrating circuit (1) and string control promote executive circuit and protect control display circuit (9) to connect power supply V+ end, and power supply V+ terminal potential is higher than power supply V+1 terminal potential.

Fig. 4 circuit connecting mode: thermistor NTC4 one end ground connection, other end connecting resistance R41, resistance R 41 another termination power V+ utmost points, or resistance R P4 one end ground connection, another termination capacitor C 41 negative poles, capacitor C 41 positive poles connect the power supply V+ utmost point, and it connects dividing point (V _I40) through spacing be provided with that resistance R 42 is connected to or door or with positive (+) input (V of door or two inputs of homophase door H4 and operational amplifier or voltage comparator B 4 _I41), resistance R 46 cross-over connections in or the door H4 input (V _I41) and output (V _O4) between, anti-phase (-) input of operational amplifier or voltage comparator B 4 connects or door H4 output (V _O4), resistance R 48 cross-over connections are in positive (+) input (V of operational amplifier or voltage comparator B 4 _I41) and the power supply V+1 utmost point between, resistance R 45 cross-over connections are in voltage comparator B 4 output (V _C4) and triode VT42 base stage between, resistance R 47 cross-over connections in or door H4 output (Vo ₄) and triode VT41 base stage between, resistance R 44 is connected to voltage comparator B 4 output (V _C4) and the power supply V+ utmost point between.Relay J 4 coils are connected between triode VT41 and VT42 two collector electrodes, diode D41 positive pole connects triode VT41 collector electrode, negative pole connects triode VT42 collector electrode, resistance R 43 1 termination triode VT42 collector electrodes, other end sending and receiving optical diode LED4 negative pole, luminous tube two utmost point LED4 positive poles connect the power supply V+ utmost point, the ratio of resistance R 42 and R46 resistance is set or door, perhaps with door, perhaps the upper and lower bound of homophase door H4 is spacing, operational amplifier or voltage comparator B 4 and or door, perhaps with door, perhaps the power end of homophase door H4 all meets power end V+1, external circuit connects the power supply V+ utmost point, and power end V+ voltage is higher than power end V+1 voltage.

Fig. 4 circuit working principle: at the beginning of circuit powered on, because of thermistor NTC4 is in the low temperature high-impedance state, or capacitor C 41 both end voltage were lower, make dividing point V _I40Above earth potential is higher, through spacing resistance R 42 liftings, the input V of being provided with _I41Current potential is also higher, greater than or the threshold voltage (≈ 1/2V+) of door H4 input, or door H4 output V _O4The output high level feeds back to V through feedback resistance R46 on the one hand _I41, make V _I41Current potential is higher, joins end formula governor circuit and is locked as high output state, V on the other hand _O4High level promotes triode VT41 conducting through resistance R 47, also has output V on the one hand _O4High level makes operational amplifier B4 output Vc4 output electronegative potential, and through resistance R 45 pulling triode VT42 conductings, two triode conductings simultaneously make relay J 4 energising adhesives, and the J4 normally opened contact is connected load power source, and load heats up.Triode VT42 conducting makes the LED4 can not be luminous, and the expression backing protects the top and protects control circuit and be in the garrison state.

Circuit powers on behind the certain hour, and NTC4 rises with load temperature because of thermistor, and resistance diminishes, dividing point V _I40Current potential descends, or 41 liang of pole tensions increases of capacitor C, also can make V _I40Current potential descends, V _I41Current potential also drop to thereupon less than or the door H4 threshold voltage (≈ 1/2V ₊) time, or door H4 output electronegative potential, making voltage comparator B 4 output high level, triode VT42 ends, output V _O4Be electronegative potential, through resistance R 46 feedbacks, make input V on the one hand _I41Current potential is lower, and locks this state, and VT41 is ended, and two triode string controlled relay J4 as long as there is one to end, just can make relay discharge, and cut off load current, and load begins cooling, and it is big that the NTC4 resistance begins again to become, V _I40Current potential begins again to rise, and works as V _I40Current potential rise greater than or door H4 threshold voltage (≈ 1/2V ₊) time, or door H4 output V _O4Export high level again, make the conductings simultaneously of two triodes, promote relay J 4 adhesives, the load intensification of switching on again, circuit enters next temperature control cyclic process.Carry out in the normal circulation temperature control process between spacing upper and lower, perhaps regularly before and after, backing protects the top and protects control circuit and be in the garrison state all the time.

When sensing circuit generation abnormal failure (as thermistor NTC4 open circuit or resistance R 41 short circuits), when perhaps timing capacitor C41 is short-circuited, V _I40And V _I41The two-end-point potential rise makes positive (+) input (V of voltage comparator B 4 to high (near V+) _I41) current potential is higher than its output (V _O4) current potential, although triode VT41 conducting out of control, voltage comparator B 4 output (V _C4) the output high potential can make triode VT42 end, relay J 4 discharges, and the load outage still reaches anti-purpose out of control, has guaranteed security control, and LED 4 is luminous simultaneously, shows that backing protects the top and protects control circuit and be in the error protection state.

When NTC4 short circuit of sensing circuit generation thermistor or resistance R 41 open faults, or open fault is when taking place in timing capacitor C41, input V _I40And V _I41Potential pole is low, output (V _O4) current potential also is electronegative potential, triode VT41 ends, and at this moment, the effect of resistance R 48 is with input V _I41Current potential promotes slightly and (makes V _I41Terminal potential is a little more than V _O4Terminal potential), make operational amplifier or voltage comparator A4 output (V _C4) the output high potential, triode VT42 is also ended simultaneously, force relay J 4 reliable outages to discharge, its normally opened contact cuts off load power source, reaches to prevent purpose out of control, has guaranteed security control.

When the input and output side open fault took place circuit itself, this circuit also had the control of guarantor effect.Operational amplifier or voltage comparator A4 and or a door H4 meet supply voltage V+1 less than external circuit supply voltage V+, cause out of control and design in order to prevent unusual disconnection of the input of circuit own, further improved the fail safe of controlling.

Embodiment 4:

The physical circuit schematic diagram of present embodiment, as shown in Figure 5, sensing circuit or integrating circuit (1) comprise thermistor NTC5 series resistor R51, or resistance R P5 serial connection capacitor C 51, join end formula governor circuit (6) and comprise operational amplifier or voltage comparator A51 and resistance R 52, R56, R57, R58, thermistor PTC5, backing protects top guarantor's control (8) and comprises operational amplifier or voltage comparator A52, resistance R 511, string control promote executive circuit and protect control display circuit (9) to comprise triode VT51, VT52, resistance R 53, R54, R55, R59, R510, relay J 5, diode D51, LED 5.

Fig. 5 circuit connecting mode: the thermistor NTC5 one termination power V+ utmost point, other end connecting resistance R51, resistance R 51 other end ground connection, or resistance R P5 one termination power V+, another termination capacitor C 51 positive poles, capacitor C 51 minus earths, it connects dividing point (V _I50) through being connected in series the spacing tie point (V that is connected to two positives (+) input of operational amplifier or voltage comparator A51 and A52 after resistance R 52 is set again _I51) on; Resistance R 57 1 end ground connection, other end connecting resistance R58, resistance R 58 another termination thermistor PTC5, another termination power of thermistor PTC5 V+1 utmost point, resistance R 57 and R58 tie point (Vm ₅) be connected to anti-phase (-) input of operational amplifier or voltage comparator A51; The output of operational amplifier or voltage comparator A51 is connected to same potential point (V with anti-phase (-) input of operational amplifier or voltage comparator A52 and resistance R 54, R55, R56 again after serial connection lowest limit configuration resistance R 512 _O5) on, as the output (V that joins end formula governor circuit (6) _O5), another termination power V+ utmost point of resistance R 54 wherein, another termination triode VT51 base stage of resistance R 55, positive (+) input (V of another termination operational amplifier of resistance R 56 or voltage comparator A51 _I51) on; Positive (+) input (V of operational amplifier or voltage comparator A52 _I51) series resistor R511 over the ground, the output (V of operational amplifier or voltage comparator A52 _C5) connect resistance R 59, R510, another termination power V+ utmost point of resistance R 510, resistance R 59 another termination triode VT52 base stages; Triode VT51 emitter connects the power supply V+ utmost point, triode VT51 collector connecting relay J5 coil and diode D51 negative pole, and the diode D51 positive pole and the relay J 5 coil other ends all connect triode VT52 collector electrode, triode VT52 grounded emitter; Resistance R 53 connects triode VT52 collector electrode, resistance R 53 other end sending and receiving optical diode LED5 positive poles, LED 5 minus earths; It is spacing that the ratio of the resistance of adjusting resistance R 52, R56 can be set governor circuit A51 upper and lower bound, the dividing point (V of resistance R 57, R58 _M5) can set governor circuit A51 threshold value reference voltage; Operational amplifier or voltage comparator A51, the A521 power supply termination power V+1 utmost point, external circuit connects the power supply V+ utmost point, and power supply V+ pole tension is higher than power supply V+1 pole tension.

Fig. 5 circuit working principle: at the beginning of circuit powered on, because of thermistor NTC5 is in the low temperature high-impedance state, or capacitor C 51 both end voltage were lower, make dividing point V _I50Above earth potential is lower, through spacing setting resistance R 52 liftings, still makes circuit input end (V _I51) current potential is also lower, anti-phase (-) input (V of less-than operation amplifier or voltage comparator A51 _M5) current potential, its output (V _O5) output LOW voltage, through resistance R 55 pulling triode VT51 conductings, this moment, operational amplifier or voltage comparator A52 were because of positive (+) input (V _I51) voltage is higher than the input (V of its anti-phase (-) _O5) voltage, its output (V _C5) the output high potential, promote triode VT52 conducting through resistance R 59 (resistance R 510 is pull-up resistors of voltage comparator A51), make relay J 5 adhesives, its contacting load power source, load begins to heat up.Triode VT52 conducting, LED 5 is not luminous, indication circuit operate as normal fault-free, backing protects top guarantor's control circuit and is in the garrison state.

Behind the power on circuitry certain hour, NTC5 rises with load temperature because of thermistor, and resistance diminishes, dividing point V _I50Current potential rises, or capacitor C 51 the two poles of the earth also can make dividing point V along with charging voltage rises in the integrating circuit _I50Current potential rises, V _I51Current potential also rises to greater than V thereupon _M5During voltage, operational amplifier or voltage comparator A51 output V _O5The output high potential, operational amplifier or voltage comparator A52 output V _C5Along with the output electronegative potential, triode VT51, VT52 are ended, resistance R 54, R510 more help triode VT51, VT52 and reliably end, relay J 5 coil blackouts discharge (back-emf is eliminated by D51) normally opened contact and cut off load power source, temperature descends, and the NTC5 resistance becomes greatly gradually, V _I50Voltage descends, and works as V _I51Current potential descends less than V _M5During voltage, operational amplifier or voltage comparator A51 output V _O5Export electronegative potential again, operational amplifier or voltage comparator A52 output VC5 output high level makes all conductings of triode VT51, VT52, relay J 5 adhesives, the load intensification of switching on again, and circuit enters next temperature control cyclic process.Between upper and lower limit, carry out in the normal circulation temperature control process, or regularly, protect control circuit and be in the garrison state all the time.

When sensing circuit breaks down (as thermistor NTC5 open circuit or resistance R 51 short circuits), or timing capacitor C51 is when being short-circuited, V _I50And V _I51Potential pole is low, output V _O5Also be electronegative potential, triode VT51 conducting out of control,, but owing to join the output (V of end formula governor circuit (6) _O5) current potential (having certain substrate to add resistance R 512 hovers) is a little more than input (V _I51) current potential, so operational amplifier or voltage comparator A52 output (V _C5) output low level, triode VT52 ends, and makes the release of still cutting off the power supply of relay J 5 coils; cut off load power source, reached the purpose that prevents that triode VT51 is out of control, guaranteed security control; LED 5 is luminous simultaneously, shows that backing protects top guarantor's control circuit and is in the error protection state.

When NTC5 short circuit of sensing circuit generation thermistor or resistance R 51 open faults, or open fault is when taking place in timing capacitor C51, and input Vi50 and Vi51 current potential are high, output (V _O5) current potential is also high, triode VT51 ends, and at this moment, the effect of resistance R 511 is that input Vi51 current potential is dragged down slightly, makes operational amplifier or voltage comparator A52 output (V _C5) the output electronegative potential, triode VT52 is also ended, force relay J 2 reliable outages to discharge, its normally opened contact cuts off load power source, reaches to prevent purpose out of control, has guaranteed security control.

When the input and output side open fault took place circuit itself, this circuit also had the control of guarantor effect.Operational amplifier or voltage comparator A51, A52 meet supply voltage V+1 less than external circuit supply voltage V+, cause out of control and designs in order to prevent unusual disconnection of the input of circuit own, have further improved the fail safe of controlling.

Embodiment 5:

Present embodiment is made of side by side two element circuits, each element circuit theory diagram wherein, all as shown in Figure 1, its physical circuit schematic diagram, as shown in Figure 6, first module circuit input end (V _I61) and the second element circuit input (V _I62) in parallel (and connecing) on one point, a shared sensing circuit or integrating circuit (1), the output (V of two element circuits ₀₆₁, V ₀₆₂) also (and connecing) in parallel, the shared guarantor's control display circuit (luminous tube LED6 crosstalk resistance R63) and the lowest limit are transferred the output (V that establishes 65, two element circuits of resistance R _C61) (V _C62) then separately directly go here and there and control promotion executive circuit (relay J 6) and protect control display circuit (LED 6); Sensing circuit or integrating circuit (1) comprise thermistor NTC6 and resistance R 61 or resistance R P6 and capacitor C 61, join end formula governor circuit (6) for two and comprise voltage comparator B 61, B62, resistance R 65, R611, R612, R62, R66, R69, R67, R68, thermistor PTC6, two backings protect top guarantor's control circuit (8) and comprise operational amplifier A 61, A62 and resistance R 610, the string control promotes executive circuit and comprises relay J 6 and diode D61, D62, protects the control display circuit and comprises LED 6 and resistance R 63.

Fig. 6 circuit connecting mode: thermistor NTC6 one termination power V+1, other end connecting resistance R61, resistance R 61 other end ground connection, or the resistance R P6 one termination power V+1 utmost point, another termination capacitor C 61 positive poles, capacitor C 61 minus earths, it connects dividing point (V _I60) connecting the spacing end that resistance R 62 is set, the other end of resistance R 62 is attempted by the 1st element circuit input (V simultaneously _I61) and the 2nd element circuit input (V _I62), the input (V of the 1st element circuit wherein _I61) be exactly the tie point (V of two positives (+) input of voltage comparator B 61 and operational amplifier A 61 _I61), the input (V of the 2nd element circuit _I62) be exactly the tie point (V of positive (+) input of anti-phase (-) input of operational amplifier A 62 and voltage comparator B 62 _I62); The output of voltage comparator B 61 is parallel to same potential point (V through anti-phase (-) input of serial connection lowest limit configuration resistance R 611 back and resistance R 65, R66, operational amplifier A 61 ₀₆₁) as the output (V that joins end formula governor circuit (6) of first module circuit ₀₆₁), wherein the other end of resistance R 66 connects first module circuit input end (V _I61), the other end of resistance R 65 connects the power supply V+ utmost point; The output of voltage comparator B 62 is parallel to the output (V that join end formula governor circuit (6) of same potential point as second element circuit through positive (+) input of series connection lowest limit configuration resistance R 612 back and resistance R 69, luminous tube LED6 negative pole, operational amplifier A 62 ₀₆₂), wherein the other end of resistance R 69 is connected on the input (V of second element circuit _I62), be connected the output (V of operational amplifier A 62 behind the LED 6 cathode series resistance R63 _C62); Input (the V of the first module and second element circuit _I61And V _I62) go back series resistor R610 over the ground; Anti-phase (-) input of voltage comparator B 61, B62 all is connected the dividing point (V of thermistor PTC6 series resistor R67 _M6) on, wherein, the thermistor PTC6 other end also is connected to the power supply V+ utmost point behind series resistance R68, resistance R 67 other end ground connection; Executive circuit is by relay J 6 coil two ends and meet diode D61, and diode D61 negative pole is connected with diode D62 negative pole and combines, the anodal output (V with operational amplifier A 61 of diode D62 _C61) be connected the output (V of diode D61 positive pole and operational amplifier A 62 _C62) be connected, this protects two output (V that control circuit (8) is protected on the top with regard to the backing that constitutes by the first module circuit and second element circuit _C61, V _C62) directly go here and there and control promotion executive circuit (relay J 6) and protect control display circuit (LED 6), this requires two output (V of operational amplifier A 61, A62 certainly _C61, V _C62) bigger promotion ability all will be arranged.

Fig. 6 circuit working principle: at the beginning of circuit powered on, because of thermistor NTC6 is in the low temperature high-impedance state, or capacitor C 61 both end voltage were lower, make dividing point V _I60Above earth potential is lower, through spacing setting resistance R 62 liftings, still makes circuit input end (V _I61, V _I62) current potential is also lower, less than anti-phase (-) input (V of voltage comparator B 61, B62 _M6) current potential, the output (V of voltage comparator B 61, B62 _O61, V _O62) output LOW voltage, make positive (+) input (V of operational amplifier A 61 _I61) current potential is higher than the input (V of its anti-phase (-) _O61) current potential, its output (V _C61) export high potential to diode D62 positive pole, the output (V of voltage comparator B 61, B62 _O61, V _O62) electronegative potential of output, also make positive (+) input (V of operational amplifier A 62 simultaneously _O62) current potential is lower than the input (V of its anti-phase (-) _I62) current potential, its output (V _C62) the output electronegative potential, make relay J 6 energising adhesives, its contacting load power source, load begins to heat up.Because output V _O62And V _C62All be electronegative potential, so LED 6 is not luminous, indication circuit operate as normal fault-free, backing protects top guarantor's control circuit and is in the garrison state.

Behind the power on circuitry certain hour, NTC6 rises with load temperature because of thermistor, and resistance diminishes, dividing point V _I60Current potential rises, or capacitor C 61 the two poles of the earth also can make dividing point V along with charging voltage rises in the integrating circuit _I60Current potential rises, input V _I61, V _I62Current potential also rises thereupon, as input V _I61, V _I62Current potential is greater than V _M6During voltage, voltage comparator B 61, B62 output (V _O61, V _O62) the output high potential, operational amplifier A 61 output electronegative potentials, operational amplifier A 62 output high potentials, diode D62 reverse blocking relay J 6 coil currents, the J6 outage discharges (back-emf is eliminated by D61), and its normally opened contact cuts off load power source, temperature descends, and the NTC6 resistance becomes greatly gradually, V _I60Current potential descends, and works as V _I61, V _I62Current potential descends less than V _M6During voltage, voltage comparator B 61, B62 output (V _O61, V _O62) export electronegative potential again, make operational amplifier A 61 output (V _C61) the output high level, make operational amplifier A 62 output (V _C62) output low level, the adhesive so relay J 6 coils are switched on again, its contacting load power source, the load intensification of switching on again, circuit enters next temperature control cyclic process.Carry out in the normal circulation temperature control process between spacing upper and lower, or regularly, backing protects the top and protects control circuit and be in the garrison state all the time.

When sensing circuit generation thermistor NTC6 open circuit or resistance R 61 short troubles, or timing capacitor C61 is when being short-circuited fault, input V _I60And V _I61Potential pole is low, the output (V of voltage comparator B 61, B62 _O61, V _O62) output LOW voltages all, the lifting through lowest limit configuration resistance R 611, R612 guarantees output (V _O61, V _O62) current potential is a little more than input V _I60And V _I61Current potential makes operational amplifier A 61 output (V _C61) the output electronegative potential, operational amplifier A 62 output (V _C62) the output high potential, forcing relay J 6 outage releases, its normally opened contact cuts off load power source, reaches to prevent purpose out of control, has guaranteed security control, and LED 6 is luminous simultaneously, shows that backing protects top guarantor's control circuit and is in the error protection state.

When NTC6 short circuit of sensing circuit generation thermistor or resistance R 61 open faults, or open fault is when taking place in timing capacitor C61, input V _I60And V _I61Current potential is high, output (V _O61, V _O62) current potential is also high, at this moment, the effect of resistance R 610 is with input V _I61And V _I62Current potential drags down slightly, makes operational amplifier A 61 output (V _C61) the output electronegative potential, operational amplifier A 62 output (V _C62) the output high potential, force relay J 6 outages to discharge, its normally opened contact cuts off load power source, reaches to prevent purpose out of control, has guaranteed security control.

When the input and output side open fault took place circuit itself, this circuit also had the control of guarantor effect.Operational amplifier A 61, A62 and voltage comparator B 61, B62 meet supply voltage V+1 less than external circuit supply voltage V+, cause out of control and designs in order to prevent unusual disconnection of the input of circuit own, have further improved the fail safe of controlling.

In addition, present embodiment is by the side by side work of two element circuits, and input is in parallel to be surveyed sensing circuit or integrating circuit, output and divide open string control load, has improved the reliability of control again greatly.

As seen, present embodiment has very strong comprehensively anti-ability out of control, surmounts 555 time-base circuit function and performances, so be called the security control time-base circuit.Circuit structure is simple, and cost is extremely low, and is of many uses.

Claims

1. a security control time-base circuit comprises sensing circuit or integrating circuit (1), it is characterized in that: comprise that also joining end formula governor circuit (6), backing protects that control circuit (8) is protected on the top, the string control promotes executive circuit and protects control display circuit (9); Described end formula governor circuit (6) and the backing of joining protects the tie point (V that the signal input part of control circuit (8) is protected on the top _i) be connected the described output (V that joins end formula governor circuit with the output of sensing circuit or integrating circuit (1) _O) connect backing and protect the top and protect the lowest limit of control circuit (8) control input end that control input end and string control promote executive circuit and protect control display circuit (9) is set, backing protects the output (V that control circuit (8) is protected on the top _C) promote executive circuit and protect another control input end of controlling display circuit (9) to link to each other with the string control; Described sensing circuit or integrating circuit (1) can be the sensing circuits of temperature sensor or pressure sensor or liquid level sensor series resistor formation, or the resistance integrating circuit that charging constitutes to electric capacity; The described end formula governor circuit of joining can be with operational amplifier or voltage comparator, perhaps XOR gate or with door or or door or homophase door be the circuit that main part constitutes, also can be that other device with its function equivalent is the circuit that main part constitutes; Described backing protects the top, and to protect control circuit be to be the circuit that main part constitutes with operational amplifier or voltage comparator or XOR gate or biconditional gate, also can be that other device with its function equivalent is the circuit that main part constitutes; Described string control promotes executive circuit and protects control display circuit (9) is by two triodes series connection control relay power supplys or by a triode and operational amplifier or voltage comparator output string controlled relay power supply or by two analog switches series connection control relay power supplys or directly to go here and there the controlled relay power supply by two operational amplifiers or voltage comparator output be the executive circuit that main part constitutes, and controls display circuit by the guarantor that a resistance series connection light-emitting diode constitutes; The described end formula governor circuit threshold value reference voltage of joining also can be controlled by semistor; Described end formula governor circuit and the backing of joining protects the top to protect the supply voltage of control circuit is V+1, and the external circuit supply voltage is V+, and voltage V+ is higher than voltage V+1.

2. security control time-base circuit according to claim 1, it is characterized in that: described sensing circuit or integrating circuit (1) comprise negative tempperature coefficient thermistor NTC2 series resistor R21, or resistance R p2 serial connection capacitor C 21, the described end formula governor circuit (6) of joining comprises integrated operational amplifier or voltage comparator B 21 and resistance R 22, R26, R27, R28, semistor PTC2, described backing protects top guarantor's control circuit (8) and comprises operational amplifier or voltage comparator B 22, resistance R 211, string control promote executive circuit and protect control display circuit (9) to comprise triode VT21, VT22, resistance R 23, R24, R25, R29, R210, relay J 2, diode D21, LED 2; The negative tempperature coefficient thermistor NTC2 one termination power V+ utmost point, other end connecting resistance R21, resistance R 21 other end ground connection, or resistance R p2 one termination power V+, another termination capacitor C 21 positive poles, capacitor C 21 minus earths, it connects dividing point (V _I20) the tie point (V of anti-phase (-) input through being connected in series spacing positive (+) input that is connected to operational amplifier or voltage comparator B 21 after resistance R 22 is set again and operational amplifier or voltage comparator B 22 _I21) on; Resistance R 27 1 end ground connection, other end connecting resistance R28, resistance R 28 another termination semistor PTC2, another termination power of semistor PTC2 V+1 utmost point, resistance R 27 and R28 tie point (V _M2) be connected to anti-phase (-) input of operational amplifier or voltage comparator B 21; The output of operational amplifier or voltage comparator B 21 is connected to same potential point (V with positive (+) input of operational amplifier or voltage comparator B 22 and resistance R 24, R25, R26 again after serial connection lowest limit configuration resistance R 212 _O2) on, as the output (V that joins end formula governor circuit (6) _O2), another termination power V+ utmost point of resistance R 24 wherein, another termination triode VT21 base stage of resistance R 25, positive (+) input (V of another termination operational amplifier of resistance R 26 or voltage comparator B 21 _I21) on; Anti-phase (-) input (V of operational amplifier or voltage comparator B 22 _I21) series resistor R211 over the ground, the output (V of operational amplifier or voltage comparator B 22 _C2) connect resistance R 29, R210, another termination power V+ utmost point of resistance R 210, resistance R 29 another termination triode VT22 base stages; Triode VT21 emitter connects the power supply V+ utmost point, triode VT21 collector connecting transistor VT22 emitter, and triode VT22 collector connecting relay J2 coil and diode D21 negative pole, the diode D21 positive pole and the relay J 2 coil other ends are ground connection all; Resistance R 23 connects triode VT22 emitter, resistance R 23 other end sending and receiving optical diode LED2 positive poles, and LED 2 negative poles connect triode VT22 collector electrode; It is spacing that the ratio of the resistance of adjusting resistance R 22, R26 can be set governor circuit B21 upper and lower bound, the dividing point (V of resistance R 27, R28 _M2) can set governor circuit B21 threshold value reference voltage; Operational amplifier or voltage comparator B 21, the B22 power supply termination power V+1 utmost point, external circuit connects the power supply V+ utmost point, and power supply V+ pole tension is higher than power supply V+1 pole tension.

3. security control time-base circuit according to claim 1, it is characterized in that: described sensing circuit or integrating circuit (1) comprise negative tempperature coefficient thermistor NTC3 series resistor R31, or resistance R p3 serial connection capacitor C 31, describedly join that end formula governor circuit (6) comprises or door, perhaps with door, perhaps homophase door H3 and resistance R 32, R36, described backing protects top guarantor's control circuit (8) and comprises voltage comparator exclusive disjunction amplifier A3, resistance R 38, described string control promote executive circuit and protect control display circuit (9) to comprise triode VT31, VT32, diode D31, resistance R 35, R37, relay J 3, resistance R 33, LED 3; Negative tempperature coefficient thermistor NTC3 one end ground connection, other end connecting resistance R31, resistance R 31 another termination power V+ utmost points, or resistance R p3 one end ground connection, another termination capacitor C 31 negative poles, capacitor C 31 positive poles connect the power supply V+ utmost point, and it connects dividing point (V _I30) through spacing be provided with that resistance R 32 is connected to or door or with anti-phase (-) input (V of door or two inputs of homophase door H3 and voltage comparator exclusive disjunction amplifier A3 _I31), voltage comparator exclusive disjunction amplifier A3 positive (+) input termination or door H3 output (V _O3), anti-phase (-) input (V of resistance R 38 1 termination voltage comparator exclusive disjunction amplifier A3 _I31), another termination power V+1 utmost point, resistance R 36 cross-over connections in or the door H3 input (V _I31) and output (V _O3) between, resistance R 35 cross-over connections are in operational amplifier A 3 output (V _C3) and triode VT32 base stage between, resistance R 37 cross-over connections in or door H3 output (V _O3) and triode VT31 base stage between, triode VT32 grounded emitter, collector connecting transistor VT31 emitter, triode VT31 collector connecting relay J3 coil and diode D31 positive pole, the diode D31 negative pole and the relay J 3 coil other ends all are connected on the power supply V+ utmost point, and LED 3 negative poles meet operational amplifier A 3 output (V _C3), LED 3 anodal connecting resistance R33, resistance R 33 another terminations or door H3 output (V _O3), it is spacing that the ratio of resistance R 32 and R36 is set the upper and lower bound of H3, operational amplifier A 3 and or the door H3 power supply termination power V+1 utmost point, external circuit connects the power supply V+ utmost point, power supply V+ pole tension is higher than power supply V+1 pole tension.

4. security control time-base circuit according to claim 1, it is characterized in that: described sensing circuit or integrating circuit (1) comprise negative tempperature coefficient thermistor NTC4 series resistor R41, or resistance R P4 serial connection capacitor C 41, describedly join that end formula governor circuit (6) comprises or door, perhaps with door, perhaps homophase door buffer H4 and resistance R 42, R46, described backing protects top guarantor's control circuit (8) and is operational amplifier or voltage comparator B 4, resistance R 48, described string control promotes executive circuit and protects the control display circuit to comprise triode VT41, VT42, diode D41, relay J 4, resistance R 43, R44, R45, R47, LED 4, described end formula governor circuit (6) and the backing of joining protects the top and protects control circuit (8) and connect power supply V+1 end, described sensing circuit or integrating circuit (1) and string control promote executive circuit and protect control display circuit (9) to connect power supply V+ end, and power supply V+ terminal potential is higher than power supply V+1 terminal potential; Negative tempperature coefficient thermistor NTC4 one end ground connection, other end connecting resistance R41, resistance R 41 another termination power V+ utmost points, or resistance R P4 one end ground connection, another termination capacitor C 41 negative poles, capacitor C 41 positive poles connect the power supply V+ utmost point, and it connects dividing point (V _I40) through spacing be provided with that resistance R 42 is connected to or door or with positive (+) input (V of door or two inputs of homophase door H4 and operational amplifier or voltage comparator B 4 _I41), resistance R 46 cross-over connections in or the door H4 input (V _I41) and output (V _O4) between, anti-phase (-) input of operational amplifier or voltage comparator B 4 connects or door H4 output (V _O4), resistance R 48 cross-over connections are in positive (+) input (V of operational amplifier or voltage comparator B 4 _I41) and the power supply V+1 utmost point between, resistance R 45 cross-over connections are in voltage comparator B 4 output (V _C4) and triode VT42 base stage between, resistance R 47 cross-over connections in or door H4 output (V _O4) and triode VT41 base stage between, resistance R 44 is connected to voltage comparator B 4 output (V _C4) and the power supply V+ utmost point between, relay J 4 coils are connected to triode VT41, between VT42 two collector electrodes, diode D41 positive pole connects triode VT41 collector electrode, negative pole connects triode VT42 collector electrode, resistance R 43 1 termination triode VT42 collector electrodes, other end sending and receiving optical diode LED4 negative pole, luminous tube two utmost point LED4 positive poles connect the power supply V+ utmost point, the ratio of resistance R 42 and R46 resistance is set or door, perhaps with door, perhaps the upper and lower bound of homophase door H4 is spacing, operational amplifier or voltage comparator B 4 reach or door, perhaps with door, perhaps the power end of homophase door H4 all meets power end V+1, external circuit connects the power supply V+ utmost point, and power end V+ voltage is higher than power end V+1 voltage.

5. security control time-base circuit according to claim 1, it is characterized in that: described sensing circuit or integrating circuit (1) comprise negative tempperature coefficient thermistor NTC5 series resistor R51, or resistance R P5 serial connection capacitor C 51, the described end formula governor circuit (6) of joining comprises operational amplifier or voltage comparator A51 and resistance R 52, R56, R57, R58, semistor PTC5, described backing protects top guarantor's control circuit (8) and comprises operational amplifier or voltage comparator A52, resistance R 511, described string control promote executive circuit and protect control display circuit (9) to comprise triode VT51, VT52, resistance R 53, R54, R55, R59, R510, relay J 5, diode D51, LED 5; The negative tempperature coefficient thermistor NTC5 one termination power V+ utmost point, other end connecting resistance R51, resistance R 51 other end ground connection, or resistance R P5 one termination power V+, another termination capacitor C 51 positive poles, capacitor C 51 minus earths, it connects dividing point (V _I50) through being connected in series the spacing tie point (V that is connected to two positives (+) input of operational amplifier or voltage comparator A51 and A52 after resistance R 52 is set again _I51) on; Resistance R 57 1 end ground connection, other end connecting resistance R58, resistance R 58 another termination semistor PTC5, another termination power of semistor PTC5 V+1 utmost point, resistance R 57 and R58 tie point (V _M5) be connected to anti-phase (-) input of operational amplifier or voltage comparator A51; The output of operational amplifier or voltage comparator A51 is connected to same potential point (V with anti-phase (-) input of operational amplifier or voltage comparator A52 and resistance R 54, R55, R56 again after serial connection lowest limit configuration resistance R 512 _O5) on, as the output (V that joins end formula governor circuit (6) _O5), another termination power V+ utmost point of resistance R 54 wherein, another termination triode VT51 base stage of resistance R 55, positive (+) input (V of another termination operational amplifier of resistance R 56 or voltage comparator A51 _I51) on; Positive (+) input (V of operational amplifier or voltage comparator A52 _I51) series resistor R511 over the ground, the output (V of operational amplifier or voltage comparator A52 _C5) connect resistance R 59, R510, another termination power V+ utmost point of resistance R 510, resistance R 59 another termination triode VT52 base stages; Triode VT51 emitter connects the power supply V+ utmost point, triode VT51 collector connecting relay J5 coil and diode D51 negative pole, and the diode D51 positive pole and the relay J 5 coil other ends all connect triode VT52 collector electrode, triode VT52 grounded emitter; Resistance R 53 connects triode VT52 collector electrode, resistance R 53 other end sending and receiving optical diode LED5 positive poles, LED 5 minus earths; It is spacing that the ratio of the resistance of adjusting resistance R 52, R56 can be set governor circuit A51 upper and lower bound, the dividing point (V of resistance R 57, R58 _M5) can set governor circuit A51 threshold value reference voltage; Operational amplifier or voltage comparator A51, the A52 power supply termination power V+1 utmost point, external circuit connects the power supply V+ utmost point, and power supply V+ pole tension is higher than power supply V+1 pole tension.

6. security control time-base circuit according to claim 1, it is characterized in that: described sensing circuit or integrating circuit (1) comprise negative tempperature coefficient thermistor NTC6 and resistance R 61, or resistance R P6 and capacitor C 61, join end formula governor circuit (6) and comprise voltage comparator B 61 for described two, B62, resistance R 65, R611, R612, R62, R66, R69, R67, R68, semistor PTC6, described two backings protect top guarantor's control circuit (8) and comprise operational amplifier A 61, A62 and resistance R 610, described string control promote executive circuit and protect control display circuit (9) to comprise relay J 6 and diode D61, D62, LED 6 and resistance R 63; Constitute the first module circuit by operational amplifier A 61 and voltage comparator B 61 for main part, constitute second element circuit by operational amplifier A 62 and voltage comparator B 62 for main part, first module circuit input end (V _I61) and the second element circuit input (V _I62) in parallel (and connecing) on one point, connect (shared) sensing circuit or integrating circuit (1), join the output (V of end formula governor circuit (6) in two element circuits ₀₆₁, V ₀₆₂) also parallel connection (and connecing), guarantor of connection (shared) controls display circuit (luminous tube LED6 crosstalk resistance R63) and lowest limit accent is established, and backing protects the output (V that pushes up guarantor's control circuit (8) in 65, two element circuits of resistance R _C61, V _C62) then separately directly go here and there and control promotion executive circuit (relay J 6) and protect control display circuit (LED 6); Negative tempperature coefficient thermistor NTC6 one termination power V+1, other end connecting resistance R61, resistance R 61 other end ground connection, or the resistance R P6 one termination power V+1 utmost point, another termination capacitor C 61 positive poles, capacitor C 61 minus earths, it connects dividing point (V _I60) connecting the spacing end that resistance R 62 is set, the other end of resistance R 62 is attempted by first module circuit input end (V simultaneously _I61) and the second element circuit input (V _I62), the input (V of first module circuit wherein _I61) be exactly the tie point (V of two positives (+) input of voltage comparator B 61 and operational amplifier A 61 _I61), the input (V of second element circuit _I62) be exactly the tie point (V of positive (+) input of anti-phase (-) input of operational amplifier A 62 and voltage comparator B 62 _I62); The output of voltage comparator B 61 is parallel to same potential point (V through anti-phase (-) input of serial connection lowest limit configuration resistance R 611 back and resistance R 65, R66, operational amplifier A 61 ₀₆₁) as the output (V that joins end formula governor circuit (6) of first module circuit ₀₆₁), wherein the other end of resistance R 66 connects first module circuit input end (V _I61), the other end of resistance R 65 connects the power supply V+ utmost point; The output of voltage comparator B 62 is parallel to the output (V that join end formula governor circuit (6) of same potential point as second element circuit through positive (+) input of series connection lowest limit configuration resistance R 612 back and resistance R 69, luminous tube LED6 negative pole, operational amplifier A 62 ₀₆₂), wherein the other end of resistance R 69 is connected on the input (V of second element circuit _I62), be connected the output (V of operational amplifier A 62 behind the LED 6 cathode series resistance R63 _C62); Input (the V of the first module and second element circuit _I61, V _I62) go back series resistor R610 over the ground; Anti-phase (-) input of voltage comparator B 61, B62 all is connected the dividing point (V of semistor PTC6 series resistor R67 _M6) on, wherein the other end of semistor PTC6 also is connected to the power supply V+ utmost point behind series resistance R68, resistance R 67 other end ground connection; Executive circuit is by relay J 6 coil two ends and meet diode D61, and diode D61 negative pole and diode D62 negative pole connect and compose, the output (V of diode D62 positive pole and operational amplifier A 61 _C61) be connected the output (V of diode D61 positive pole and operational amplifier A 62 _C62) be connected.