CN206128884U - Commodity circulation electronic lock and commodity circulation security personnel case - Google Patents

Abstract

The utility model discloses a commodity circulation electronic lock and commodity circulation security personnel case, the unable problem of using when electroless provides following technical scheme to the power of electronic lock, including unlocking means, unlocking means includes backup battery group, is used for supplying power for unlocking means when needs, comparison circuit, be coupled in unlocking means's power and relatively the size of magnitude of voltage and the benchmark value of power with the output compare signal, switch circuit is coupled in comparison circuit in order to receive the comparison signal to organize with control backup battery in response to the comparison signal break -make and supply power for unlocking means, when the magnitude of voltage of unlocking means power was less than the benchmark value, switch circuit control backup battery group began to supply power for unlocking means, it organizes to backup battery to have realized when the electroless or trouble of power the automatic switch -over to make unlocking means can continue to use, avoid because the trouble that the power problem caused the commodity circulation electronic lock to open has strengthened the stability that the commodity circulation electronic lock used, give people and offer convenience.

Description

Logistics electronic lock and logistics safety box

Technical field

This utility model is related to logistics transportation field, more specifically, it relates to a kind of logistics electronic lock and logistics security personnel Case.

Background technology

In logistics field, especially for bank or security company, often when vital document or article is transported, adopt Casing made by metal material carries out locking process as safety box, such as applied mechanical lockset, padlock, embedded mechanical lock etc., With the safety of the transported article of strict guarantee, but the key of traditional Mechanical ring latch or embedded mechanical lock is easily answered System, safety is not high, and Mechanical ring latch or embedded mechanical lock are also impossible to record unpacking information, are difficult to enter safety box Row management, more also precisely due to Mechanical ring latch is generally positioned at outside casing, is easily pried open, i.e., this guarantor by violence Peace case due to being only one individually individual, from administrative convenience and safety for, all compare shortcoming；Although existing There is some that there is the safety box of simple electronic lock, but because its electronic lock structure is complicated, box weight ratio when causing empty van It is higher, and production cost is higher that the input modules such as keyboard need to be also configured on each safety box, and power supply is powered, such as long-time Transport causes electric power to exhaust, and gently cannot then open safety box, and heavy then electronic lock fails, and this safety box is not only in use Very inconvenient, safety is also poor.

At present, the Chinese patent of Application No. CN201020661615.6 discloses a kind of thing with Powerless electronic lock Stream safety box system, it includes：Including the Powerless electronic locking device and unlocking apparatus that are arranged in safety box, Powerless electronic Locking device is electrically connected with unlocking apparatus by connected structure, and unlocking apparatus include the power supply mould powered for Powerless electronic locking device Block and provide Password Input input equipment, supply module include power supply battery, electrically connect with battery respectively for managing Manage the Charge Management unit of battery charging state and be powered out-put supply administrative unit for controlling battery.

Although this electronic lock can effectively reduce the volume and weight of safety box, unlocking apparatus are independently of electricity Outside sub- locking device, only powered by battery, if charging causes not in time dead battery or cell damage to break down, opened Locking device cannot be used, then cause timely open electronic lock, bring inconvenience, therefore need improvement badly.

Utility model content

In view of the shortcomings of the prior art, main purpose of the present utility model is to provide a kind of power supply in electronic lock The logistics electronic lock that still can be used during without electric or power failure.

For achieving the above object, this utility model provides following technical scheme：

A kind of logistics electronic lock, including unlocking apparatus, the unlocking apparatus include

Battery backup, when needed for being powered to unlocking apparatus；

Comparison circuit, with one with open battery backup when voltage corresponding to reference value, be coupled to unlocking apparatus Power supply and compare the magnitude of voltage of power supply and the size of reference value to export comparison signal；

On-off circuit, is coupled to comparison circuit to receive comparison signal, and standby to control in response to comparison signal break-make Set of cells is powered to unlocking apparatus；

When the magnitude of voltage of unlocking apparatus power supply is less than the reference value of comparison circuit, on-off circuit control battery backup is opened Begin to be powered to unlocking apparatus.

Using above-mentioned technical proposal, comparison circuit compares the magnitude of voltage of power supply and compares letter to export with the size of reference value Number, on-off circuit is coupled to comparison circuit to receive comparison signal and in response to comparison signal control battery backup to dress of unlocking Power supply is put, when the supply voltage value of unlocking apparatus is more than reference value, is now supplied to unlocking apparatus without the need for battery backup Electricity, comparison circuit exports the comparison signal of high level, and on-off circuit is standby so as to control in response to the comparison signal conducting of high level Stopped being powered to unlocking apparatus with set of cells, when the supply voltage value of unlocking apparatus is less than reference value, now needed standby It is powered to unlocking apparatus with set of cells, comparison circuit exports low level comparison signal, and on-off circuit is in response to low level Comparison signal disconnect start to be powered to unlocking apparatus so as to control battery backup, by comparison circuit and on-off circuit Control, realize and automatically switch to battery backup without electricity or during failure in power supply, so that unlocking apparatus can continue Use, it is to avoid because power issue causes the trouble that logistics electronic lock cannot be opened, enhance that logistics electronic lock uses is steady It is qualitative, while bringing conveniently.

Preferably, the on-off circuit include be coupled to comparison circuit with receive comparison signal transistor switching circuit, The first FET switch circuit for being coupled to transistor switching circuit and second effect for being coupled to transistor switching circuit Should pipe on-off circuit；

First FET switch circuit carries out break-make to control power supply in response to the control of transistor switching circuit Start and stop being powered to unlocking apparatus；

It is standby to control that second FET switch circuit carries out break-make in response to the control of transistor switching circuit Set of cells starts and stops being powered to unlocking apparatus；

The transistor switching circuit is in response to comparison signal break-make controlling the first FET switch circuit and The break-make of two FET switch circuits；

When transistor switching circuit is turned on, the first FET switch circuit is turned on and the second FET switch circuit Disconnection is powered with controlling only power supply to unlocking apparatus；

When transistor switching circuit disconnects, the first FET switch circuit disconnects and being stopped to dress of unlocking with controlling power supply Power supply is put, and the conducting of the second FET switch circuit starts to be powered to unlocking apparatus to control battery backup.

Using above-mentioned technical proposal, on-off circuit include transistor switching circuit, the first FET switch circuit and Second FET switch circuit, the first FET switch circuit and are controlled by the break-make of transistor switching circuit The break-make of two FET switch circuits, the first FET switch circuit controls power supply by the break-make of itself to dress of unlocking Power supply is put, the second FET switch circuit controls battery backup and powers to unlocking apparatus by the break-make of itself, so as to Realize by transistor switching circuit to control the work of power supply and battery backup；Whole circuit structure is simple, cost Cheap, easy to maintenance, transistor switching circuit response immediate stability, and opening and closing moment in addition will not produce spark and cause dangerous situation, It is more safe and reliable.

Preferably, also including be coupled to the first FET switch circuit and while be coupled to the second fet switch electricity First instruction unit on road, first instruction unit is opened in response to the first FET switch circuit and the second field effect transistor simultaneously The control on powered-down road is available to point out unlocking apparatus to be powered.

Using above-mentioned technical proposal, it is parallel with the load circuit of logistics electronic lock for pointing out unlocking apparatus to lead to The first instruction unit that electricity can be used, i.e. the first instruction unit is coupled to the first fet switch electricity for control power supply simultaneously Road and the second FET switch circuit, when the conducting of the first FET switch circuit and the second FET switch circuit is disconnected When opening, now power supply is powered to unlocking apparatus, and makes the first instruction unit work to point out while power supply is powered to the first instruction unit People's tripper now can be used, when the first FET switch circuit disconnects and the conducting of the second FET switch circuit When, now battery backup is powered to unlocking apparatus, and while battery backup is powered to the first instruction unit makes the first instruction unit Work pointing out people's tripper now can use, if during the non-normal work of the first instruction unit, illustrate unlocking apparatus this Carve unpowered power supply i.e. cannot normal work, and then can point out whether people's unlocking apparatus can make by the first instruction unit With bringing facility.

Preferably, also including being coupled to comparison circuit to receive comparison signal and in response to comparison signal to indicate standby electricity The second enabled instruction unit of pond group.

Using above-mentioned technical proposal, comparison circuit is coupled with the second instruction unit, when the magnitude of voltage of power supply is more than reference value, Power supply is powered to unlocking apparatus, the second instruction unit start working to point out power supply normally to use, when the magnitude of voltage of power supply it is little When reference value, battery backup starts to be powered to unlocking apparatus, and the second instruction unit quits work and points out people now to open The power supply of locking device is without electricity or breaks down, and needs are charged or keep in repair, while when the second instruction unit does not work, the Two instruction units also have the enabled effect of prompting user battery backup.

Preferably, also including the charging circuit for being coupled to battery backup to charge to battery backup.

Using above-mentioned technical proposal, battery backup is coupled with charging circuit, such that it is able to give battery backup benefit in time Charge volume, it is to avoid the long-term uncharged shortening for causing its service life of battery backup, can cause the battery backup to use It is more long.

Preferably, also including being coupled to comparison circuit to adjust the regulation circuit of the reference value size of comparison circuit.

Using above-mentioned technical proposal, comparison circuit is coupled with regulation circuit, by adjusting benchmark of the circuit to comparison circuit Value is adjusted, due to reference value with enable corresponding to the voltage of battery backup, such that it is able to standby to opening as needed The magnitude of voltage of set of cells is set, and reference value can be adjusted accordingly in power supply of the unlocking apparatus using different voltages Section, so the voltage of various different voltages can be used, meets the different demands of user, convenient.

Preferably, also including be coupled to comparison circuit with receive comparison signal and in response to comparison signal with send power supply dimension The power-source maintenance of shield wireless warning signal is wirelessly warned circuit.

Using above-mentioned technical proposal, comparison circuit is coupled with power-source maintenance and wirelessly warns circuit, when the magnitude of voltage of power supply it is little When reference value, power-source maintenance circuit of wirelessly warning starts to send power-source maintenance and wirelessly warns letter in response to comparison signal now Number, people know after by timely power supply produced problem is processed, it is to avoid long-time is not to power issue process And cause more serious problem so that the more stability and security of unlocking apparatus operation.

Preferably, the power-source maintenance wirelessly warn circuit include be coupled to comparison circuit to receive comparison signal and respond In comparison signal with the switch portion of break-make and be coupled to switch portion and in response to the break-make of switch portion with send power-source maintenance without The ZIGBEE wireless modules of line warning signal.

Using above-mentioned technical proposal, switch portion is coupled to comparing unit to receive comparison signal, when comparison signal is high electricity At ordinary times, switch portion conducting make ZIGBEE wireless modules work, i.e., ZIGBEE wireless modules start send power-source maintenance wirelessly warn Signal, when comparison signal is low level, switch portion disconnects makes ZIGBEE wireless modules stopping transmission power-source maintenance wirelessly warn Signal, realizes and controls whether power-source maintenance circuit of wirelessly warning sends power-source maintenance wireless warning signal by comparison circuit, ZIGEBEE wireless modules are low in energy consumption, save energy, at the same it is stable, it is safe and reliable.

Preferably, the comparison circuit is voltage detector.

Using above-mentioned technical proposal, the accuracy of detection of voltage detector is high, and strong interference immunity, output is stable, and it is carried sentences The standard value of disconnected output level, and by connecting outer circuits be capable of achieving that various criterion value is compared and is judged, price is low It is honest and clean, it is easy to use.

In view of the shortcomings of the prior art, secondary objective of the present utility model is to provide a kind of without electricity or to send out in power supply Still openable logistics safety box during raw failure.

A kind of logistics safety box, including logistics electronic lock as above.

Using above-mentioned technical proposal, the locking of logistics safety box is carried out by logistics electronic lock, it is safe and reliable, and operate It is convenient, battery backup is automatically switched to without electricity or during failure in the power supply of logistics electronic lock, so that unlocking apparatus can be with It is continuing with, it is to avoid because power issue causes the trouble that logistics electronic lock cannot be opened, enhance logistics electronic lock and use Stability, while bringing conveniently.

In sum, this utility model has the advantages that：

1. battery backup is automatically switched to when the power supply of logistics electronic lock is without electric or failure, so that unlocking apparatus Can be continuing with, it is to avoid because power issue causes the trouble that logistics electronic lock cannot be opened, enhance logistics electronic lock The stability for using, while bringing conveniently；

2., when power supply is without electricity or during failure, power-source maintenance circuit of wirelessly warning starts to send in response to comparison signal now Power-source maintenance wireless warning signal, people know after by timely power supply produced problem is processed, it is to avoid when long Between more serious problem is not caused to power issue process so that the more stability and security of unlocking apparatus operation；

3. whole circuit structure is simple, and components and parts are cheap, stable, will not produce electric spark and cause dangerous situation, make Obtain logistics safety box safer in transit.

Description of the drawings

Fig. 1 is the structural representation of Powerless electronic lock and unlocking apparatus in this utility model；

Fig. 2 is the circuit theory diagrams of unlocking apparatus embodiment one in this utility model；

Fig. 3 is the circuit theory diagrams of unlocking apparatus embodiment two in this utility model；

Fig. 4 is that power-source maintenance is wirelessly warned the circuit theory diagrams of circuit in unlocking apparatus embodiment three.

In figure：1st, unlocking apparatus；11st, comparison circuit；12nd, on-off circuit；121st, transistor switching circuit；122nd, first Effect pipe on-off circuit；123rd, the second FET switch circuit；13rd, charging circuit；14th, the first instruction unit；15th, second indicate Portion；16th, circuit is adjusted；17th, power-source maintenance is wirelessly warned circuit；171st, switch portion；172nd, ZIGBEE wireless modules；2nd, passive electrical Sub- locking device；3rd, USB data line.

Specific embodiment

Below in conjunction with the accompanying drawings and embodiment, this utility model is described in detail.

Embodiment one：

A kind of logistics safety box, reference Fig. 1, including logistics electronic lock, logistics electronic lock includes being arranged in safety box Powerless electronic locking device and unlocking apparatus 1, Powerless electronic locking device is electrically connected with unlocking apparatus 1 by connected structure, is inserted Binding structure is the plug connector of the direct grafting on being respectively arranged at the Powerless electronic locking device and unlocking apparatus 1, Huo Zhewu Power supply electronic locking device and unlocking apparatus 1 pass through data wire grafting；Directly the plug connector of grafting can be the USB interface for cooperating Plug connector, serial ports plug connector etc., unlocking apparatus 1 are directly plugged on passive electronic locking device 2 by plug-in unit, it is convenient fast It is prompt, it is also possible to arrange self-defining phase interworking and meet data transfer between Powerless electronic locking device and unlocking apparatus 1 will The plug connector interface of summation power reguirements, reducing the versatility of plug connector interface can further improve the thing of Powerless electronic lock The safety of stream safety box；The connected structure that the present embodiment is adopted is the grafting of USB data line 3.

With reference to Fig. 2, unlocking apparatus 1 include power supply, battery backup, comparison circuit 11, on-off circuit 12, charging circuit 13rd, the first instruction unit 14 and the second instruction unit 15, the break-make of the controlling switch circuit 12 of comparison circuit 11 with realize power supply without Electricity or fail-open battery backup are powered to unlocking apparatus 1, and when unlocking apparatus 1 have electricity to use, first refers to Show that the work of portion 14 prompting people unlocking apparatus 1 can be used, when battery backup is opened, the work prompter of the second instruction unit 15 Battery backup enable, while point out people's power supply to appear as topic Xu solve in time, additionally, be provided with charging circuit 13 can be with Battery backup is charged.

With reference to Fig. 2, the reference value corresponding to voltage when comparison circuit 11 has one and opens battery backup, comparison is electric Road 11 is coupled to power supply and compares the magnitude of voltage of power supply with the size of reference value to export comparison signal, and comparison circuit 11 can be Comparator circuit, voltage detector, the present embodiment is preferably voltage detector, and comparison circuit 11 is specifically connected as：Including electricity Pressure detector IC1, voltage detector IC1 have a reference value, and the reference value is corresponding with the magnitude of voltage for opening battery backup, Wherein, the positive test side of voltage detector IC1 is connected to the positive pole of power supply, and negative test side is connected to the negative pole of power supply, defeated Go out end output comparison signal.

With reference to Fig. 2, on-off circuit 12 is coupled to comparison circuit 11 to receive comparison signal and in response to comparison signal break-make It is powered to unlocking apparatus 1 with controlling battery backup, it includes being coupled to comparison circuit 11 to receive the three of comparison signal Pole pipe on-off circuit 121, the first FET switch circuit 122 for being coupled to transistor switching circuit 121 and it is coupled to three Second FET switch circuit 123 of pole pipe on-off circuit 121；First FET switch circuit 122 is in response to audion The control of on-off circuit 121 carries out break-make to control power supply and start and stop being powered to unlocking apparatus 1；Second field effect transistor On-off circuit 123 carry out break-make in response to the control of transistor switching circuit 121 with control battery backup and start and stop to Unlocking apparatus 1 are powered；Transistor switching circuit 121 is electric to control the first fet switch in response to comparison signal break-make The break-make of the FET switch circuit 123 of road 122 and second；

With reference to Fig. 2, the physical circuit circuit of on-off circuit 12 is connected as：

Transistor switching circuit 121 includes the audion VT1 and resistance R1 of NPN type；First FET switch circuit 122 field effect transistor VT2, the diode D1 and resistance R3 for including N-channel enhancement mode；Second FET switch circuit 123 is wrapped Include field effect transistor VT3 of P-channel enhancement type；

Wherein, one end of resistance R1 is connected to the outfan of voltage detector IC1 to receive comparison signal, and resistance R1 will compare Export to the base stage of audion VT1 compared with the Jing phase other ends after signal blood pressure lowering, the colelctor electrode of audion VT1 is connected to field effect transistor The grid of VT2, the grounded emitter of audion VT1, the drain electrode of field effect transistor VT2 is connected to power supply, the drain electrode of field effect transistor VT2 The source electrode of field effect transistor VT2 is connected to after positive series diode D1, is connected to after the source series resistance R3 of field effect transistor VT2 The grid of field effect transistor VT3, the drain electrode of field effect transistor VT3 is connected to the negative pole of battery backup, and the source electrode of field effect transistor VT3 connects Ground.

With reference to Fig. 2, charging circuit 13 is coupled to battery backup to charge to battery backup, specific circuit connection For：

Including diode D2 and resistance R5, the anode of wherein diode D2 is connected to the source electrode of field effect transistor VT3, two poles The negative electrode of pipe D2 is connected to the drain electrode of field effect transistor VT3, the resistance R5 two ends with diode D2 in parallel.

With reference to Fig. 2, the first instruction unit 14 is coupled to the first FET switch circuit 122 and while is coupled to second effect Should pipe on-off circuit 123, the first FET switch circuit 122 and the second FET switch circuit 123 give first simultaneously The power supply of instruction unit 14 allows it to light to point out unlocking apparatus 1 to use, and the physical circuit of the first instruction unit 14 is connected as：

Including resistance R4, LED 2 and electric capacity C1, wherein one end of electric capacity C1 is connected to standby electricity simultaneously The positive pole of pond group and the source electrode of field effect transistor VT2, the other end ground connection of electric capacity C1, one end of resistance R4 is while be connected to standby The positive pole of set of cells and the source electrode of field effect transistor VT2, are grounded after the positive series connection LED 2 of the other end of resistance R4.

With reference to Fig. 2, the second instruction unit 15 be coupled to comparison circuit 11 with receive comparison signal and in response to comparison signal with Indicate that battery backup is enabled, the physical circuit of the second instruction unit 15 is connected as：

Including resistance R2 and LED 1, one end of wherein resistance R2 is connected to the defeated of voltage detector IC1 Go out end to receive comparison signal, be grounded after the positive series connection LED 1 of the other end of resistance R2.

The operation principle and the course of work of the present embodiment：

With reference to Fig. 2, when the supply voltage value of unlocking apparatus 1 is more than the reference value of voltage detector IC1, voltage detector The outfan of IC1 exports the comparison signal of high level, and then the comparison signal of high level makes LED 1 luminous to carry Let others have a look at now power supply normal work, the base stage of audion VT1 receives and turned on after the comparison signal of high level, then power supply Jing bis- Pole pipe D1, resistance R3, audion VT1 form loop, and its pressure drop after triode ON is about 0, then the grid of field effect transistor VT2 with Voltage between drain electrode is about VCC-0.7V, and the voltage between the grid of field effect transistor VT3 and drain electrode is about 0, such field effect Pipe VT2 is turned on and field effect transistor VT3 is ended, the conducting resistance very little of field effect transistor VT2, and its tube voltage drop VDS is than in parallel two The positive pressure drop of pole pipe D1 is much smaller, so VCC is being supplied to load for Jing field effect transistor VT2 after the conducting of field effect transistor VT2 Electricity, while LED 2 carries out luminous prompting user now unlocking apparatus 1 can be used because power supply is powered.

With reference to Fig. 2, when the supply voltage value of unlocking apparatus 1 is less than the reference value of voltage detector IC1, voltage detector The outfan of IC1 exports low level comparison signal, and then low level comparison signal can not make LED 1 light, Fluorescent tube extinguishes prompting people, and now power supply fails normal work, and the base stage of audion VT1 is received after the flat comparison signal of height Cut-off, this results in the grid and the same current potential of drain electrode of field effect transistor VT2, then field effect transistor VT2 cut-off, the grid of field effect transistor VT3 Pole provides bias voltage, the conducting of field effect transistor VT3, and then battery backup and starts to unlocking by the positive pole of battery backup with R3 The load of device 1 is powered, and because the diode in field effect transistor VT2 is reverse-biased, battery backup is not supplied to other loads Electricity, while LED 2 continues luminous due to the power supply of battery backup, now unlocking apparatus 1 are still to point out user Can use.

Embodiment two：

A kind of logistics safety box, with reference to Fig. 3, its unlocking apparatus 1 is also more electric to adjust including comparison circuit 11 is coupled to The regulation circuit 16 of the reference value size on road 11, adjusts specifically being connected as circuit 16：

Including Zener diode D3, potentiometer RP and resistance R6, the negative electrode of wherein Zener diode D3 is connected to power supply, The anode of Zener diode D3 is connected to the normal phase input end of voltage detector IC1, Zener diode D3 parallel connection potentiometer RP, surely It is grounded after anode series resistance R6 of pressure diode D3.

The operation principle and the course of work of the present embodiment：

With reference to Fig. 3, one Zener diode D3 of adjunction between power supply VCC and voltage detector IC1（VZ is its voltage stabilizing Value）, then meet VCC=reference value+VZ, so the size of reference value can be set by adjusting VZ, due to reference value with open With corresponding to the voltage of battery backup, set such that it is able to the magnitude of voltage as needed to opening battery backup, Unlocking apparatus 1 using different voltages power supply when reference value can accordingly be adjusted, so various differences can be used The voltage of voltage, meets the different demands of user, convenient.

Embodiment three：

A kind of logistics safety box, with reference to Fig. 3 and Fig. 4, be based on embodiment two and where different from embodiment two, Unlocking apparatus 1 also include be coupled to comparison circuit 11 with receive comparison signal and in response to comparison signal with send power-source maintenance without The power-source maintenance of line warning signal is wirelessly warned circuit 17, power-source maintenance wirelessly warn circuit 17 including switch portion 171 and ZIGBEE wireless modules 172, switch portion 171 is coupled to comparison circuit 11 to receive comparison signal and in response to comparison signal with logical Disconnected, ZIGBEE wireless modules 172 are coupled to switch portion 171 and wireless to send power-source maintenance in response to the break-make of switch portion 171 Warning signal, power-source maintenance is wirelessly warned specifically being connected as of circuit 17：

Switch portion 171 includes audion VT4, resistance R7, relay KM1 open in usual and the sustained diode 4 of positive-negative-positive, The base stage of wherein audion VT4 is connected to the outfan of voltage detector IC1 to receive comparison signal, the base stage of audion VT4 Series resistance R7 is connected to colelctor electrode, and the colelctor electrode of audion VT4 is connected to power supply, the emitter stage series connection relay of audion VT4 It is grounded after device KM1, the negative electrode of sustained diode 4 is connected to the emitter stage of audion VT4, the plus earth of sustained diode 4, One end of ZIGBEE wireless modules 172 is connected to power supply, and the other end is series at after switch KM1-1 and is grounded.

The operation principle and the course of work of the present embodiment：

With reference to Fig. 3 and Fig. 4, when the base stage of PNP type triode VT4 receives the comparison signal of high level, audion VT4 ends, so power-source maintenance is wirelessly warned, circuit 17 does not work；

With reference to Fig. 3 and Fig. 4, after the base stage of PNP type triode VT4 receives low level comparison signal, audion VT4 conductings make relay KM1 open in usual work, then relay KM1 controlling switches KM1-1 closure, make after switch KM1-1 closures ZIGBEE wireless modules 172 obtain electric work, and ZIGBEE wireless modules 172 start to send power-source maintenance wireless warning signal, use Person is gone wrong by the power supply that receiving terminal receives the i.e. can be known unlocking apparatus 1 of power-source maintenance wireless warning signal needs dimension Shield, it is to avoid long-time does not cause more serious problem to power issue process so that the operation of unlocking apparatus 1 it is more stable With safety.

The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to Above-described embodiment, all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.Should refer to Go out, for those skilled in the art, some improvement under the premise of without departing from this utility model principle and Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (10)

1. a kind of logistics electronic lock, including unlocking apparatus (1), is characterized in that：The unlocking apparatus (1) include

Battery backup, when needed for being powered to unlocking apparatus (1)；

Comparison circuit (11), with one with open battery backup when voltage corresponding to reference value, be coupled to unlocking apparatus (1) power supply simultaneously compares the magnitude of voltage of power supply with the size of reference value to export comparison signal；

On-off circuit (12), is coupled to comparison circuit (11) to receive comparison signal, and in response to comparison signal break-make controlling Battery backup is powered to unlocking apparatus (1)；

When the magnitude of voltage of unlocking apparatus (1) power supply is less than the reference value of comparison circuit (11), on-off circuit (12) control is standby Set of cells starts to be powered to unlocking apparatus (1).

2. logistics electronic lock according to claim 1, is characterized in that：The on-off circuit (12) is electric including comparison is coupled to Transistor switching circuit (121), be coupled to transistor switching circuit (121) first effect of the road (11) to receive comparison signal Pipe on-off circuit (122) and second FET switch circuit (123) of transistor switching circuit (121) should be coupled to；

First FET switch circuit (122) carries out break-make to control in response to the control of transistor switching circuit (121) Power supply processed starts and stops being powered to unlocking apparatus (1)；

Second FET switch circuit (123) carries out break-make to control in response to the control of transistor switching circuit (121) Battery backup processed starts and stops being powered to unlocking apparatus (1)；

The transistor switching circuit (121) is in response to comparison signal break-make controlling the first FET switch circuit (122) And second FET switch circuit (123) break-make；

When transistor switching circuit (121) is turned on, the first FET switch circuit (122) is turned on and the second field effect transistor is opened Powered-down road (123) disconnects and being powered to unlocking apparatus (1) with controlling only power supply；

When transistor switching circuit (121) disconnects, the first FET switch circuit (122) disconnect with control power supply stop to Unlocking apparatus (1) are powered, and the second FET switch circuit (123) conducting is started to unlocking apparatus with controlling battery backup (1) it is powered.

3. logistics electronic lock according to claim 2, is characterized in that：Also include being coupled to the first FET switch circuit (122) and while be coupled to first instruction unit (14) of the second FET switch circuit (123), first instruction unit (14) Simultaneously in response to the control of the first FET switch circuit (122) and the second FET switch circuit (123) pointing out Unlocking apparatus (1) have been powered available.

4. logistics electronic lock according to claim 2, is characterized in that：Also include being coupled to comparison circuit (11) to receive ratio Compared with signal and in response to comparison signal second instruction unit (15) enabled to indicate battery backup.

5. logistics electronic lock according to claim 1, is characterized in that：Also include being coupled to battery backup with to standby electricity The charging circuit (13) that pond group charges.

6. logistics electronic lock according to claim 1, is characterized in that：Also include being coupled to comparison circuit (11) to adjust ratio Compared with the regulation circuit (16) of the reference value size of circuit (11).

7. logistics electronic lock according to claim 1, is characterized in that：Also include being coupled to comparison circuit (11) to receive ratio Wirelessly warned circuit (17) with the power-source maintenance for sending power-source maintenance wireless warning signal compared with signal and in response to comparison signal.

8. logistics electronic lock according to claim 7, is characterized in that：Power-source maintenance circuit (17) of wirelessly warning includes It is coupled to comparison circuit (11) to receive comparison signal and with the switch portion (171) of break-make and be coupled in response to comparison signal Switch portion (171) and in response to switch portion (171) break-make with the wireless moulds of the ZIGBEE for sending power-source maintenance wireless warning signal Block (172).

9. logistics electronic lock according to claim 1, is characterized in that：The comparison circuit (11) is voltage detector.

10. a kind of logistics safety box, is characterized in that：Including the arbitrary described logistics electronic lock of claim 1 to 9.