CN101259449B - Automatically power-off system of paper chipper and automatically power-off method - Google Patents
Automatically power-off system of paper chipper and automatically power-off method Download PDFInfo
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- CN101259449B CN101259449B CN2008100612996A CN200810061299A CN101259449B CN 101259449 B CN101259449 B CN 101259449B CN 2008100612996 A CN2008100612996 A CN 2008100612996A CN 200810061299 A CN200810061299 A CN 200810061299A CN 101259449 B CN101259449 B CN 101259449B
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Abstract
The invention provides an automatic shutoff system of a paper shredder and an automatic shutoff method, which belongs to the technical field of office equipment and solves the problems that the automatic shutoff system and the automatic shutoff method of the existing paper shredder can not realize complete shutoff and much higher standby energy consumption. The automatic shutoff system of the paper shredder provided by the invention comprises a switching circuit M0 as well as a switching signal circuit M1 and a control circuit M2 which are connected with each other. The switching circuit M0 is respectively connected with the switching signal circuit M1 and the control circuit M2; the control circuit M2 can switch the on-off state of the switching circuit M0 and cut off the switching circuit M0 when the standby time of the paper shredder exceeds a setting time. The automatic shutoff method of the paper shredder comprises the following steps: a, the paper shredder switches to a standby and timing state; b, a power switch S1 is detected; c, the operation of the motor is required to be detected; d, time comparison is carried out; e, a power supply is cut off. The system and the method of the invention have the advantages of low energy consumption and high safety performance, etc.
Description
Technical field
The invention belongs to the office equipment technical field, relate to a kind of automatic outage system of shredder, also relate to a kind of automatic power off method of shredder simultaneously.
Background technology
Shredder is one of office equipment of using always, the function that present shredder has is more and more, and the consumer is also more and more higher to the functional requirement of shredder, has power saving, safety and automatic circuit break function are exactly the special partial function of paying attention to of consumer, also are the targets that shredder manufacturer is pursued.Therefore, can realize power saving and purpose of safety, have the technical matters that must solve when automatic circuit break function becomes present manufacturing shredder again.
For this reason, people have designed some at the existing the problems referred to above of shredder and have had the shredder of automatic circuit break function.As Chinese patent disclosed " a kind of control system of shredder " (its publication number is CN101062486A), this system comprises power supply, sensor, motor and control circuit, under the state of shredder energized, if shredder is in holding state, and when stand-by time surpasses the automatic power-off time set, control system automatic cutout shredder power supply.
Automatic outage control system in the above-mentioned patent adopts digital processing chip to control, and detects and control the break-make of power switch.In the process of this system's operation, no matter the power switch on-off, digital processing chip is in not off-position fully all the time owing to will detect whether pressing of power switch.It promptly is in "on" position for digital processing chip provides the weakness part of power supply under the state that power switch is not pressed, can't reach security requirement and the zero of system's energy that system cuts off the power supply fully under the situation that power switch disconnects and consume.
Because market is under the more and more higher requirement of shredder Product Safety and energy resource consumption, present automatic outage system exists the serious potential safety hazard and the wasting of resources.
Summary of the invention
First purpose of the present invention is the existing the problems referred to above of automatic outage system at existing shredder, cut off the power supply fully and proposed a kind of shredder of realizing, lower the system standby energy resource consumption, improve the automatic outage system of security behind the system cut-off and reliability.
Second purpose of the present invention is at the existing the problems referred to above of the automatic power off method of existing shredder, cuts off the power supply fully and put forward a kind of shredder of realizing, reduces the automatic power off method of system standby energy resource consumption.
Purpose of the present invention can realize by following technical proposal: a kind of automatic outage system of shredder, be connected on the machine operation circuit M3 of shredder, this system comprises the on-off circuit M0 that is used for the commutation circuit on off operating mode and the switching signal circuit M1 that is linked together and control circuit M2, and on-off circuit M0 links with switching signal circuit M1 and control circuit M2 respectively; Power supply input back powers to switch signal circuit M1 and control circuit M2 by on-off circuit M0, switching signal circuit M1 is used to control circuit M2 that expression on-off circuit M0 is provided the control signal of on off operating mode, control circuit M2 can come the on off operating mode of switching switch circuit M0 according to this control signal, and control circuit M2 can cut off on-off circuit M0 when the holding state of shredder surpasses setting-up time, it is characterized in that, described on-off circuit M0 comprises that a two-way is not with the power switch S1 and the relay J of self-locking, above-mentioned relay J includes contact sets one J1 and contact sets two J2, the positive pole of power supply and negative pole respectively with the two ends that are connected on machine operation circuit M3 after the second normally opened contact J23 of the first normally opened contact J11 of contact sets one J1 and contact sets two J2 is connected; Described power switch S 1 includes and is connected in the different circuits and first switch S 11 and the second switch S12 of synchronous working, first switch S 11 and the two ends that are connected in parallel on the first normally opened contact J11 after the first normally closed contact J12 among contact sets one J1 is connected in series, second switch S12 and the two ends that are connected in parallel on the second normally opened contact J23 after the second normally closed contact J24 among contact sets two J2 is connected in series, the input end of above-mentioned switching signal circuit M1 is connected between first switch S 11 and the first normally closed contact J12, described switching signal circuit M1 comprises a photoelectrical coupler U2 and the first divider resistance R1 that is serially connected, the second divider resistance R11, one end of photoelectrical coupler U2 primitive plane is connected with the common port of the second normally opened contact J23 and the second normally closed contact J24, and the other end is connected between the first normally closed contact J12 and first switch S 11; Secondary side is connected in series back ground connection with the first divider resistance R1 and the second divider resistance R11, the input end of above-mentioned control circuit M2 is connected the common port of the first divider resistance R1 and the second divider resistance R11, also be provided with a filter capacitor C1 among the described switching signal circuit M1, above-mentioned filter capacitor C1 is in parallel with the first divider resistance R1.
When on-off circuit M0 connects, can make the machine operation circuit M3 of shredder enter duty, and according to the break-make situation of on-off circuit M0 control circuit M2 be sent control signal by switching signal circuit M1.Control circuit M2 receives the state that is positioned in conjunction with shredder itself again after the control signal that switching signal circuit M1 sends and makes logical process, according to the break-make of the circuit of the gauge tap as a result M0 that handles and the circulation circuit of electric current.Simultaneously, the time that shredder is in holding state surpasses default during the time, and control circuit M2 can cut off on-off circuit M0, can make total system be in complete off-position equally.
Relay J includes two groups of single-pole double-throw (SPDT) contacts, is respectively contact sets one J1 and contact sets two J2, and every group of contact sets all includes a normally opened contact and a normally closed contact.Power switch S1 is a two-way switch, and the staff is when operating power switch S 1, and switch S 11 on two circuit and switch S 12 are carried out synchronous working, and can automatically reset after the staff looses one's grip.
When shredder is not opened, normally closed contact J12, J24 closure among two contact sets J1, the J2 of relay J, when power switch S1 presses, the switch S 11 and the S12 closure that are connected in series with normally closed contact J12 and J24 respectively on two circuits of power switch S1, electric current is at first powered to machine operation circuit M3 by S11, J12 and S12, J24, makes machine startup.Meanwhile switching signal circuit M1 sends a control signal to control circuit M2, this control signal is representing that power switch S1 is in closure state and machine is in starting state, control circuit M2 receives two normally opened contact J11 and the J23 adhesive that makes relay J after this control signal, and power supply will change into by relay J after the adhesive normally opened contact J11 and J23 give machine operation circuit M3 power supply.After unclamping power switch S1, machine normally starts.
When system is in starting state, this moment relay J two normally opened contact J11 and J23 adhesive, after the adhesive in power switch S1 do not press, electric current can't pass through switching signal circuit M1, switching signal circuit M1 also can't send control signal to control circuit M2, so the machine operate as normal; In case power switch S1 is pressed, electric current flows among the switching signal circuit M1 by switch S 11, switching signal circuit M1 produces control signal notice control circuit M2, under state after normal the startup, control circuit M2 is automatic cutout normally opened contact J11 and J23, the normally closed contact J12 of relay J and J24 adhesive, and control circuit M2 refusal is carried out other orders simultaneously, in case after unclamping power switch S1, system can reach the outage purpose.
Another kind of situation, when system is in starting state and when disobeying the moving outage of armrest, utilisation system cuts off the power supply after entering holding state automatically.When system enters holding state, normally opened contact J11 and J23 adhesive, switch S 11 and switch S 12 still are in off-state, in case the system standby time surpasses the time that system sets, control circuit M2 can disconnect normally opened contact J11 and J23, though and this moment normally closed contact J12 and J24 closure because switch S 11 and switch S 12 are in off-state, system still can realize cutting off the power supply fully.
After switch S 11 closures, electric current is input to the primitive plane of photoelectrical coupler U2 by switch S 11, and and power cathode between form the loop, make the luminous end of photoelectrical coupler U2 luminous, with this with the input electrical signal conversion be the receiving end that light signal is passed to photoelectrical coupler U2 secondary side.The receiving end of photoelectrical coupler U2 secondary side converts light signal to electric signal output again, be not electrically connected in the whole conversion process, so both coupled transfer signal, buffer action is arranged again.When each switch S 11 is pressed, all can under the effect of divider resistance R1 and R11, also be in the control signal of down state to an expression of the input end output switch S 11 of control circuit M2.
In the automatic outage system of above-mentioned a kind of shredder, described control circuit M2 comprises central processing unit U1 and coil driver, above-mentioned central processing unit U1 includes switching signal input end RA3 and the control signal output ends RA2 that is connected with coil driver, and switching signal input end RA3 is connected with switching signal circuit M1.
In the automatic outage system of above-mentioned a kind of shredder, described coil driver includes the coil J3 of triode Q and relay J, the base stage of triode Q is connected on the control signal output ends RA2, and the collector of triode Q is connected in series grounded emitter with the coil J3 of relay J.
After the switching signal input end RA3 of control circuit M2 receives the control signal of the representative power switch S1 state that switching signal circuit M1 sends, the state that is in conjunction with machine itself is done logical process again, when central processing unit U1 judges residing state, high level or low level that can corresponding change control signal output ends RA2 be controlled the conducting of triode Q or are blocked with this.When control signal output ends RA2 is high level, the collector of triode Q and emitter conducting, the coil J3 conducting of corresponding relays J, thereby control normally opened contact J11 and normally opened contact J23 adhesive.On the contrary, when control signal output ends RA2 was low level, the coil J3 of relay J disconnected, and normally opened contact J11 and normally opened contact J23 disconnect, and normally closed contact J12 and J24 adhesive.
As a kind of scheme preferably, in the automatic outage system of above-mentioned a kind of shredder, also be provided with the initialization circuit of an automatic power-off time among the described control circuit M2, U1 links to each other with central processing unit.This initialization circuit can be drawn external key on shredder, make things convenient for user oneself to set the time of outage automatically.
In the automatic outage system of above-mentioned a kind of shredder, also be parallel with a silicon diode D2 on the coil J3 of described relay J, the forward ground connection of silicon diode D2.The effect of silicon diode D2 is to remove the reverse impulse interference power that the coil J3 of relay J produces when discharge, prevents that relay J is in the reverse voltage misoperation.
A kind of automatic power off method of shredder, described shredder comprises power supply, the motor that is linked together and control system, power supply is to motor and control system power supply, be provided with the power switch S1 of control circuit break-make situation in the described control system, it is characterized in that, under the state of shredder energized, the operation that described control system is carried out outage automatically comprises the steps:
A, shredder enter the standby time status: open the shutdown timing, carry out next step simultaneously;
B, power switch S1 detect: if power switch S1 is in closure state, and the automatic cutout machine power; If power switch S1 disconnects, enter next step;
C, machine operation require to detect: if the shredded paper order is arranged, enter duty, return step a after work order is finished; If do not have the shredded paper order, enter next step;
D, time ratio be: the logic size relation of the automatic power-off time T1 that stores in motor stand-by time T2 and the control system relatively, if stand-by time T2 then returns step b less than automatic power-off time T1; If stand-by time T2 then enters next step greater than automatic power-off time T1;
E, deenergization: control system is sent timeout signal, the automatic cutout machine power.
Have two circuits to power to motor in the control system, when shredder entered duty or holding state, control system control power supply was powered to motor from circuit wherein, and power switch S1 is positioned on another circuit and is in off-state.In case control system detects power switch S1 closure, control system will temporarily be powered to motor by the circuit that is provided with power switch S1, after power switch S1 disconnects originally to the circuit disconnection of motor power supply, article two, circuit all can't be powered to motor, and shredder is realized outage fully.Equally, when shredder is in holding state, in case when stand-by time T2 surpasses automatic power-off time T1, can trigger control system equally and will be originally the circuit of motor power supply be disconnected, and power switch S1 there is no any action this moment, was in off-state all the time.So, shredder can rely on automatic outage to realize cutting off the power supply fully equally.
In the automatic power off method of above-mentioned a kind of shredder, the automatic power-off time that is stored in the control system described in the steps d also comprises step:
I, setting-up time are drawn the external key of shredder and are set automatic power-off time T1 by initialization circuit;
II, storage time, the automatic power-off time T1 that initialization circuit is set by control system stores.
The user can freely set after the shredder standby power-off time T1 automatically according to different needs.
In the automatic power off method of above-mentioned a kind of shredder, the automatic power-off time T1 that sets in the steps d is 0～30 minute.It is comparatively rational that the setting range of automatic power-off time T1 was between 0～30 minute.
Compared with prior art, the beneficial effect of this automatic outage system provided by the present invention and power-off method is:
1, energy resource consumption is low, and this system has really realized the outage fully of system under the state that power switch S1 disconnects, and has improved security of products, reliability and has realized product is reduced the requirement of energy resource consumption.
2, security performance height, switching signal circuit M1 adopt photoelectrical coupler U2 transmission of electric signals, are not electrically connected in the whole conversion process, and input, output electric signal are had the good isolation effect, have strengthened the security of total system simultaneously greatly.
3, diverse in function, control circuit M2 is realized by one-chip computer, diverse in function can be cut off the power supply the stand-by period automatically according to the customer requirement change.
Description of drawings
Fig. 1 is the circuit block diagram of the automatic outage system of this shredder.
Fig. 2 is the circuit diagram of the automatic outage system of this shredder.
Fig. 3 is the logic flow synoptic diagram of the automatic power off method of this shredder.
Embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
Consult Fig. 1, Fig. 1 is cut off the power supply the automatically circuit block diagram of system of this shredder, as shown in the figure, this automatic outage system is connected on the machine operation circuit M3 of shredder, comprise the on-off circuit M0 that is used for the commutation circuit on off operating mode and the switching signal circuit M1 that is linked together and control circuit M2, on-off circuit M0 links with switching signal circuit M1 and control circuit M2 respectively; To switch signal circuit M1 and control circuit M2 power supply, in the present embodiment, system adopts civil power to power as power supply by on-off circuit M0 in civil power input back.
Switching signal circuit M1 is used to control circuit M2 that expression on-off circuit M0 is provided the control signal of on off operating mode, control circuit M2 can come the circulation circuit of switching switch circuit M0 according to this control signal, and control circuit M2 can cut off on-off circuit M0 when the stand-by time of the machine operation circuit M3 of shredder surpasses setting-up time.
Fig. 2 is the physical circuit figure of the automatic outage system of this shredder, as shown in the figure, on-off circuit M0 comprises that a two-way is not with the power switch S1 and the relay J of self-locking, relay J includes normally opened contact J11, J23 and normally closed contact J12, J24, power switch S1 includes switch S 11 and the switch S 12 that is connected in the different circuits, and switch S 11 and switch S 12 be synchronous working all the time.Behind the live wire process knife switch S2 and fuse F1 of civil power, by inserting behind the normally opened contact J11 among the machine operation circuit M3, its zero line is by inserting behind the normally opened contact J23 among the machine operation circuit M3 again.Live wire can also be linked into via the tandem link of switch S 11 and normally closed contact J12 among the machine operation circuit M3 simultaneously.Equally, zero line also can be connected among the machine operation circuit M3 via switch S 12 and normally closed contact J24.
Switching signal circuit M1 comprises a photoelectrical coupler U2, divider resistance R1 and R11, be provided with a current-limiting resistance R2 between on-off circuit M0 and the switching signal circuit M1, the end of this current-limiting resistance R2 is connected between switch S 11 and the normally closed contact J12, the other end is connected with the input end of photoelectrical coupler U2 primitive plane, is connected on the zero line of civil power behind silicon diode D1 of output terminal forward serial connection of photoelectrical coupler U2 primitive plane.The output terminal of photoelectrical coupler U2 secondary side is connected in series ground connection behind divider resistance R11 and the R1 successively, also is provided with signal output part KEY end between divider resistance R11 and the R1.Divider resistance R1 goes up also and is connected with a filter capacitor C1, and filter capacitor C1 plays the effect of impurity elimination wave interference.D1 is used to limit the civil power way flow and crosses switching signal circuit M1, prevents that the luminous end of photoelectrical coupler U2 from being smashed by the civil power reverse voltage.
Control circuit M2 includes central processing unit U1, the coil J3 of triode Q and relay J, central processing unit U1 is provided with switching signal input end RA3 and control signal output ends RA2, be connected on the base stage of triode Q behind current-limiting resistance R3 of control signal output ends RA2 serial connection, the collector of triode Q is connected in series with the coil J3 of relay J, and grounded emitter; KEY end among switching signal input end RA3 and the switching signal circuit M1 is connected.
In the present embodiment, the D.C. regulated power supply that the target VDD of the institute AC low-tension electricity that to be civil power come out by transformer produces after bridge heap rectification and capacitor filtering voltage stabilizing among Fig. 2, voltage be about+12V about.Because wiring needs, in the reception termination of photoelectrical coupler U2 VDD; Owing to could drive about relay needs+12V, thus the relay coil termination VDD.
When shredder was not opened, normally opened contact J11, J23 and normally closed contact J12, the J24 of relay J were in state as shown in Figure 2, normally closed contact J12, J24 adhesive, and normally opened contact J11, J23 disconnect, and the coil J3 of relay J does not switch on, and the KEY end is low level.
Closed shutter switch S 2, when power switch S1 pressed, switch S 11 on two circuits of power switch S1 and switch S 12 were closed simultaneously, and civil power is at first powered to machine operation circuit M3 by S11, J12 and S12, J24, makes machine startup.Civil power can also be by the high-level control signal of this road of current-limiting resistance R2 about 5V of KEY end generation simultaneously, and notice central processing unit U1 switch S 11 and switch S 12 also are in down state.After the switching signal input end RA3 of central processing unit U1 receives this control signal, the state that is in conjunction with machine itself is done logical process again, when central processing unit U1 judges residing state, make control signal output ends RA2 be in high level, the collector of triode Q and emitter conducting, coil J3 conducting.After the coil J3 conducting, make normally opened contact J11 and J23 adhesive.Normally closed contact J12 and J24 disconnect, and civil power will change into by relay J this moment normally opened contact J11 and J23 give machine operation circuit M3 power supply.After unclamping power switch S1, machine normally starts.
When system is in starting state, this moment relay J two normally opened contact J11 and J23 adhesive, in power switch S1 do not press, civil power can't produce high-level control signal at the KEY end by this road of current-limiting resistance R2, so the machine operate as normal after the adhesive; In case power switch S1 is pressed, the civil power switch S 11 of flowing through, and the control signal notice central processing unit U1 power switch S1 that makes this road circulation of current-limiting resistance R2, KEY end produce high level is in down state.Central processing unit U1 sends low level in conjunction with the duty of machine operation circuit M3 to the base stage of triode Q, and Q blocks with triode.After coil J3 was disconnected, normally opened contact J11 and J23 disconnected, corresponding normally closed contact J12 and J24 adhesive, and central processing unit U1 refusal is carried out other orders simultaneously, in case after unclamping power switch S1, system can reach the outage purpose.
Above-described is exactly that system relies on manual operation to realize the complete power process of system fully, and another kind of situation, system can also be cut off the power supply after entering holding state automatically.When system works during at holding state, to begin the timing of shutting down automatically, this moment normally opened contact J11 and J23 adhesive, switch S 11 and switch S 12 still are in off-state, in case the system standby time surpasses the time that system sets, the control signal output ends RA2 output low level of central processing unit U1, coil J3 disconnects, normally opened contact J11 and J23 disconnect, though and this moment normally closed contact J12 and J24 adhesive, but because switch S 11 and switch S 12 are in off-state, system still can realize outage fully.
With reference to figure 3, Fig. 3 is the logic flow synoptic diagram of the automatic power off method of this shredder.Described shredder adopts civil power to power, and has two circuits by relay contact control break-make that motor is powered in the control system, the adhesive and the disconnection of control system pilot relay contact, and wherein a circuit is provided with power switch S1.
As shown in the figure, shredder is when carrying out practical operation, and it realizes that the method step of outage is as follows automatically: a, closed civil power input gate; B, closed power switch S1; C, carry out power switch S1 and detect: detect power switch S1 and whether be in closure state, if off-state is returned step b; If closure state, civil power is powered to machine operation circuit M3 by power supply S1 and normally closed contact, makes machine startup and initialization, and carries out next step; Control system also can receive a high-level control signal simultaneously, and expression power switch S1 also is in down state.D, relay circuit switch: control system disconnects normally closed contact, and the adhesive normally opened contact makes civil power pass through another circuit motor is powered, and carries out wait command simultaneously; E, carry out power switch S1 once more and detect: if closure state returns steps d; If be in off-state, enter next step; F, unlatching shutdown timing: system enters holding state, carries out next step simultaneously; G, carry out power switch S and detect: if power switch S1 is in closure state, closing machine power supply automatically; If power switch S1 disconnects, enter next step; H, carry out job requirement and detect: if the shredded paper order is arranged, enter duty, return step f after work order is finished; If do not have the shredded paper order, enter next step; I, time ratio be: set automatic power-off time T1, by control system the automatic power-off time T1 that sets is stored simultaneously, relatively the logic size relation of the automatic power-off time T1 that stores in motor stand-by time T2 and the control system less than time T 1, is then returned step g as if time T 2; If time T 2 greater than time T 1, then enters next step; In the present embodiment, the time T 1 of outage is 30 minutes automatically; J, deenergization: control system is sent timeout signal, the automatic cutout machine power.
As a kind of scheme preferably, also be connected with the initialization circuit of an automatic power-off time on the central processing unit U1, this initialization circuit can be drawn external key on shredder, make things convenient for user oneself to set the time T 1 of outage automatically.
Also can be parallel with a silicon diode D2 on the coil J3 of relay J, the forward ground connection of silicon diode D2.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (7)
1. the automatic outage system of a shredder, be connected on the machine operation circuit (M3) of shredder, this system comprises the on-off circuit (M0) that is used for the commutation circuit on off operating mode and the switching signal circuit (M1) that is linked together and control circuit (M2), and on-off circuit (M0) links with switching signal circuit (M1) and control circuit (M2) respectively; Power supply input back powers to switch signal circuit (M1) and control circuit (M2) by on-off circuit (M0), switching signal circuit (M1) is used to control circuit (M2) that the control signal of expression on-off circuit (M0) on off operating mode is provided, control circuit (M2) can come the on off operating mode of switching switch circuit (M0) according to this control signal, and control circuit (M2) can cut off on-off circuit (M0) when the holding state of shredder surpasses setting-up time, it is characterized in that, described on-off circuit (M0) comprises that a two-way is not with the power switch (S1) and the relay (J) of self-locking, above-mentioned relay (J) includes contact sets one (J1) and contact sets two (J2), the positive pole of power supply and negative pole respectively with the two ends that are connected on machine operation circuit (M3) after second normally opened contact (J23) of first normally opened contact (J11) of contact sets one (J1) and contact sets two (J2) is connected; Described power switch (S1) includes and is connected in the different circuits and first switch (S11) and the second switch (S12) of synchronous working, first switch (S11) and the two ends that are connected in parallel on first normally opened contact (J11) after first normally closed contact (J12) in the contact sets one (J1) is connected in series, second switch (S12) and the two ends that are connected in parallel on second normally opened contact (J23) after second normally closed contact (J24) in the contact sets two (J2) is connected in series, the input end of above-mentioned switching signal circuit (M1) is connected between first switch (S11) and first normally closed contact (J12), first divider resistance (R1) that described switching signal circuit (M1) comprises a photoelectrical coupler (U2) and is serially connected, second divider resistance (R11), one end of photoelectrical coupler (U2) primitive plane is connected with the common port of second normally opened contact (J23) with second normally closed contact (J24), and the other end is connected between first normally closed contact (J12) and first switch (S11); Secondary side is connected in series back ground connection with first divider resistance (R1) and second divider resistance (R11), the input end of above-mentioned control circuit (M2) is connected the common port of first divider resistance (R1) and second divider resistance (R11), also be provided with a filter capacitor (C1) in the described switching signal circuit (M1), above-mentioned filter capacitor (C1) is in parallel with first divider resistance (R1).
2. according to the automatic outage system of right 1 described a kind of shredder, it is characterized in that, described control circuit (M2) comprises central processing unit (U1) and coil driver, above-mentioned central processing unit (U1) includes switching signal input end (RA3) and the control signal output ends that is connected with coil driver (RA2), and switching signal input end (RA3) is connected with switching signal circuit (M1).
3. according to the automatic outage system of right 2 described a kind of shredders, it is characterized in that, described coil driver includes the coil (J3) of triode (Q) and relay (J), the base stage of triode (Q) is connected on the control signal output ends (RA2), the collector of triode (Q) is connected in series grounded emitter with the coil (J3) of relay (J).
4. according to the automatic outage system of right 2 or 3 described a kind of shredders, it is characterized in that also be provided with the initialization circuit of an automatic power-off time in the described control circuit (M2), (U1) links to each other with central processing unit.
5. according to the automatic outage system of right 3 described a kind of shredders, it is characterized in that, also be parallel with a silicon diode (D2) on the coil (J3) of described relay (J), the forward ground connection of silicon diode (D2).
6. the automatic power off method of a shredder, described shredder comprises power supply, the motor that is linked together and control system, power supply is to motor and control system power supply, be provided with the power switch (S1) of control circuit break-make situation in the described control system, it is characterized in that, under the state of shredder energized, the operation that described control system is carried out outage automatically comprises the steps:
A, shredder enter the standby time status: open the shutdown timing, carry out next step simultaneously;
B, power switch (S1) detect: if power switch (S1) is in closure state, the automatic cutout machine power; If power switch (S1) disconnects, enter next step;
C, machine operation require to detect: if the shredded paper order is arranged, enter duty, return step a after work order is finished; If do not have the shredded paper order, enter next step;
D, time ratio be: the logic size relation of the automatic power-off time T1 that stores in motor stand-by time T2 and the control system relatively, if stand-by time T2 then returns step b less than automatic power-off time T1; If stand-by time T2 then enters next step greater than automatic power-off time T1;
E, deenergization: control system is sent timeout signal, the automatic cutout machine power.
7. the automatic power off method of a kind of shredder according to claim 6 is characterized in that, the automatic power-off time that is stored in the control system described in the steps d also comprises step:
I, setting-up time are drawn the external key of shredder and are set automatic power-off time T1 by initialization circuit;
II, storage time, the automatic power-off time T1 that initialization circuit is set by control system stores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100612996A CN101259449B (en) | 2008-03-24 | 2008-03-24 | Automatically power-off system of paper chipper and automatically power-off method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100612996A CN101259449B (en) | 2008-03-24 | 2008-03-24 | Automatically power-off system of paper chipper and automatically power-off method |
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| CN101259449A CN101259449A (en) | 2008-09-10 |
| CN101259449B true CN101259449B (en) | 2011-10-05 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103092121B (en) * | 2011-11-02 | 2015-04-15 | 浙江伟星实业发展股份有限公司 | Power saving device of separating device |
| CN104062929A (en) * | 2013-03-22 | 2014-09-24 | 鸿富锦精密工业(武汉)有限公司 | Fixed-time switching on/off control system |
| CN104117423B (en) * | 2013-04-24 | 2016-03-02 | 上海震旦办公设备有限公司 | Energy-saving paper shredder operating circuit |
| CN107213977A (en) * | 2017-06-30 | 2017-09-29 | 合肥久能图文科技有限公司 | A kind of shredder power supply smart control system |
| CN112945998A (en) * | 2020-10-19 | 2021-06-11 | 佛山格捷锐信息技术有限公司 | Method and device for automatically turning off power supply of handheld XRF spectrometer in standby state |
| CN112462659A (en) * | 2020-11-26 | 2021-03-09 | 佛山格捷锐信息技术有限公司 | Method and device for controlling spectrum analyzer, spectrum analyzer and storage medium |
| CN112606396B (en) * | 2020-11-30 | 2023-01-10 | 深圳市创想三维科技股份有限公司 | Automatic power-off holding device for printing platform and 3D printing equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201214070Y (en) * | 2008-03-24 | 2009-04-01 | 三木控股集团有限公司 | Auto-power-off system of paper chipper |
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| CN201214070Y (en) * | 2008-03-24 | 2009-04-01 | 三木控股集团有限公司 | Auto-power-off system of paper chipper |
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