CN202422325U - Wire break alarm - Google Patents
Wire break alarm Download PDFInfo
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- CN202422325U CN202422325U CN2011205613437U CN201120561343U CN202422325U CN 202422325 U CN202422325 U CN 202422325U CN 2011205613437 U CN2011205613437 U CN 2011205613437U CN 201120561343 U CN201120561343 U CN 201120561343U CN 202422325 U CN202422325 U CN 202422325U
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Abstract
The utility model relates to the field of burglary prevention in private houses and public occasions, in particular to a wire break alarm. The wire break alarm comprises a signal acquisition and control module, wherein the output end of the signal acquisition and control module is electrically connected with the input end of a boosting module, the output end of the boosting module is electrically connected with the input end of a trigger and drive module, and the output end of the trigger and drive module is electrically connected with the input end of an alarm module; and the signal acquisition and control module is further electrically connected with a voltage detection alarm module. A metal wire can be arranged in a metal pipe or a metal wire with a shield is used, so that when the metal wire works, the metal wire is not influenced by an external environment, and is reliable in work and long in service life, thus when the wire break alarm is used, the wire break alarm has the advantages of good elusive property, free maintenance and non-obstructive building appearance. The wire break alarm, provided by the utility model, is extremely low in power consumption, long in service life and high in working reliability. The wire break alarm is further provided with a voltage detection alarm module used for prompting an owner or the relative personnel to pay attention so as to further ensure the safety property of the utility model.
Description
Technical field
The utility model relates to the antitheft field of private Residence and public arena, is specifically related to a kind of wire break alarm.
Background technology
Improving constantly of Along with people's living standard, the security precautions of home dwelling and common occasion progressively strengthens.For home dwelling; In today that high building towers; Burglary-resisting window is seen everywhere, but traditional " iron cage " burglary-resisting window of formula can only play the function of passive protection, can not play good antitheft effect; Because thief only need utilize instruments such as tongs, lifting jack just can promptly destroy burglary-resisting window, thereby makes traditional burglary-resisting window lose its function; And for public places such as market, museums, because its floor area is big, therefore conventional anti-theft measure complex structure, with high costs, not only wrong report easily, and poor effect.
The utility model content
The purpose of the utility model provides a kind of wire break alarm, this burglary-resisting system simple structure, advantages of small volume good concealment, reliable operation and highly sensitive.
For realizing above-mentioned purpose, the utility model has adopted following technical scheme: a kind of wire break alarm, this wire break alarm comprise signals collecting and control module, and said signals collecting is electrically connected with the input end of boost module with the output terminal of control module; The output terminal of said boost module is electrically connected with the input end of driver module with triggering; Said triggering is electrically connected with the input end of alarm module with the output terminal of driver module; Said signals collecting also is electrically connected with the voltage detecting alarm module with control module.
The utility model can also be able to further realization in the following manner simultaneously:
Said signals collecting and control module comprise power supply, CS, resistance R 1, capacitor C 1, triode Q1 and triode Q2; The positive pole of said power supply links to each other with the emitter of triode Q2 and an end of resistance R 1 respectively, and the other end of resistance R 1 is provided with the tinsel that is used to guard against theft, and said CS is arranged between the negative pole and tinsel of power supply; The end that said resistance R 1 links to each other with tinsel also links to each other with the base stage of triode Q1 and an end of capacitor C 1 respectively; The collector of triode Q1 links to each other with the base stage of triode Q2; The equal ground connection of the other end of the emitter of triode Q1 and capacitor C 1, the collector of said triode Q2 is electrically connected with the input end of boost module.
Preferably, said CS is three driving switch, is arranged with 8 pin, and wherein the 1st, 8 pin are oppositely arranged and constitute the gear of withdrawing a garrison; 2nd, 7 be oppositely arranged and the 2nd pin links to each other with power cathode, the 7th pin links to each other with tinsel; 3rd, 6 pin are oppositely arranged and constitute the test gear; 4th, 5 pin are oppositely arranged and constitute the gear of deploying troops on garrison duty; Above-mentioned the 1st, 6,8 pin are neutral, are between the 2nd pin and the 3rd pin and between the 2nd pin and the 4th pin and are electrically connected the equal ground connection of the 3rd, 4,5 pin.
Said boost module comprises capacitor C 2, capacitor C 3, voltage multiplication chip U1 and capacitor C 4; Said voltage multiplication chip U1 is the MAX1682/MAX1683 chip; The collector of said triode Q2 links to each other with the voltage input pin of voltage multiplication chip U1 and an end of capacitor C 2 respectively; The equal ground connection of the other end of the grounding leg of voltage multiplication chip U1 and capacitor C 2; The voltage output pin of voltage multiplication chip U1 links to each other the other end ground connection of capacitor C 4 with triggering with the input end of driver module and an end of capacitor C 4 respectively; Said capacitor C 3 is an electrochemical capacitor, and the positive pole of capacitor C 3 links to each other with the C1+ pin of voltage multiplication chip U1, and the negative pole of capacitor C 3 links to each other with the C1-pin of voltage multiplication chip U1.
Said triggering and driver module comprise resistance R 2, resistance R 3, capacitor C 5, capacitor C 6 and chip for driving U2, and said chip for driving U2 is 555 chips; The voltage output pin of said voltage multiplication chip U1 links to each other with the supply voltage pin of chip for driving U2 and an end of resistance R 2 respectively; The other end of resistance R 2 links to each other with the discharge pin of chip for driving U2 and an end of resistance R 3 respectively; The other end of resistance R 3 then links to each other with the triggering pin of chip for driving U2, the thresholding pin of chip for driving U2 and an end of capacitor C 5 respectively; The resetting pin of chip for driving U2 links to each other with the collector of said triode Q2; The control voltage pin of chip for driving U2 links to each other with an end of capacitor C 6, the equal ground connection of the other end of the other end of said capacitor C 5, the grounding leg of chip for driving U2 and capacitor C 6; The output pin of said chip for driving U2 is electrically connected with the input end of alarm module.
Preferably, said capacitor C 4 is an electrochemical capacitor.
Said alarm module comprises resistance R 4, light emitting diode L1 and hummer; The output pin of said chip for driving U2 links to each other with an end of hummer and an end of resistance R 4 respectively; The other end of resistance R 4 links to each other with the anode of light emitting diode L1, the negative electrode of light emitting diode L1 and the equal ground connection of the other end of hummer.
Said voltage detecting alarm module comprises resistance R 5, resistance R 6, resistance R 7, light emitting diode L2, voltage checking chip U4 and capacitor C 7; Said voltage checking chip U4 is the XC61C family chip; The positive pole of power supply links to each other with an end of resistance R 5 and an end of resistance R 6 respectively; The other end of resistance R 5 links to each other with the anode of light emitting diode L2, and the negative electrode of light emitting diode L2 links to each other with the voltage output pin of voltage checking chip U4; The other end of resistance R 6 then links to each other the equal ground connection of the other end of the other end of the grounding leg of voltage checking chip U4, capacitor C 7 and resistance R 7 with the voltage input pin of voltage checking chip U4, an end of capacitor C 7 and an end of resistance R 7 respectively.
Said power supply is lithium battery or dry cell batteries, and the positive terminal of power supply is provided with fuse, and described tinsel S material can be conductive materials such as iron, copper, aluminium.
The beneficial effect of the utility model:
1), during actual the use, the tinsel in the utility model also is that signal wire can be chosen suitable length and diameter according to the object of deploying troops on garrison duty, and has enough physical strengths to guarantee tinsel.After tinsel is chosen and is finished; Can tinsel be set up into anti-theft net separately; Perhaps with tinsel be located in pipeline especially in the metal tube to constitute anti-theft net; Then when anti-theft net suffered that thief adopts the violence damage of instruments such as clamp, lifting jack, tinsel will rupture, and triggers this wire break alarm sound and light alarm thus.Hence one can see that; This wire break alarm has overcome the defective that traditional burglary-resisting installation can only passive protection; Can in time give the alarm to remind owner and security personnel, not only make owner and security personnel obtain the sufficient prevention time, also greatly frighten the offender to make timely reply; Home dwelling and the common issuable loss of occasion are dropped to minimum level, thereby improved the safety index of security protection greatly.
2), because tinsel can be arranged in the metal tube; Therefore tinsel can not receive the influence of external environment when work; So reliable operation and long service life are the advantage that the utility model has good concealment, Maintenance free in use and do not hinder facade.
3), the utility model is in when deploying troops on garrison duty state normally; Described signal amplification module, boost module, triggering and driver module and alarm module are not all worked; And only after tinsel is by violence damage and fracture; Signal amplification module, boost module, triggering and driver module and alarm module just can be worked and sound and light alarm, so the power consumption of the utility model is extremely low, and long service life and functional reliability are high.
4), the power supply in the utility model can adopt lithium battery or dry cell batteries; Such as adopting No. 5 dry cells of 3 joints or high-performance 3.7V lithium battery, because the power consumption of this wire break alarm is extremely low, so the serviceable life of dry cell batteries or lithium battery is all longer; Such as the sustainable use of dry cell batteries 1 year; Lithium cell charging once then can use 40 months, thereby the utility model has overcome the shortcoming that like product needs frequent charge, serviceable life of greatly having improved power supply.
5), also be provided with the voltage detecting alarm module in the utility model; Then reach that limit or power supply can not provide enough voltage because of a variety of causes serviceable life so that this wire break alarm is when keeping operate as normal when power supply; The voltage detecting alarm module alerting signal that will flash then; Reminding owner or related personnel to note, thereby further guaranteed the security performance of the utility model.
6), the switch in the utility model provides the gear of deploying troops on garrison duty, test gear and withdraw a garrison gear totally three gears supply clients to use, when switch is in when deploying troops on garrison duty gear, this wire break alarm is in the state of normally deploying troops on garrison duty; When switch was in the test gear, this wire break alarm was in alarm condition, and whether the state of testing the utility model for the client is good; When switch is in when withdrawing a garrison gear, this wire break alarm is in off position, is engaged in maintenance or other operations for the client.
Description of drawings
Fig. 1 is the whole block scheme of the utility model;
Fig. 2 is the circuit structure diagram of the utility model.
The implication of label symbol is following among the figure:
10-signals collecting and control module 20-boost module
30-triggers and driver module 40-alarm module 50-voltage detecting alarm module
Embodiment
As shown in Figure 1, a kind of wire break alarm, this wire break alarm comprise signals collecting and control module 10; Said signals collecting is electrically connected with the input end of boost module 20 with the output terminal of control module 10; The output terminal of boost module 20 is electrically connected with the input end of triggering with driver module 30; Said triggering is electrically connected with the input end of alarm module 40 with the output terminal of driver module 30; Said signals collecting also is electrically connected with voltage detecting alarm module 50 with control module 10.
Further, as shown in Figure 2, said signals collecting and control module 10 comprise power supply ST1, CS P1, resistance R 1, capacitor C 1, triode Q1 and triode Q2; The positive pole of said power supply ST1 links to each other with the emitter of triode Q2 and an end of resistance R 1 respectively, and the other end of resistance R 1 is provided with the tinsel S that is used to guard against theft, and said CS P1 is arranged between the negative pole and tinsel S of power supply ST1; The end that said resistance R 1 links to each other with tinsel S also links to each other with the base stage of triode Q1 and an end of capacitor C 1 respectively; The collector of triode Q1 links to each other with the base stage of triode Q2; The equal ground connection of the other end of the emitter of triode Q1 and capacitor C 1, the collector of said triode Q2 is electrically connected with the input end of boost module 20.
Preferably, as shown in Figure 2, said CS P1 is three driving switch, is arranged with 8 pin, and wherein the 1st, 8 pin are oppositely arranged and constitute the gear of withdrawing a garrison; 2nd, 7 be oppositely arranged and the 2nd pin links to each other with power supply ST1 negative pole, the 7th pin links to each other with tinsel S; 3rd, 6 pin are oppositely arranged and constitute the test gear; 4th, 5 pin are oppositely arranged and constitute the gear of deploying troops on garrison duty; Above-mentioned the 1st, 6,8 pin are neutral, are between the 2nd pin and the 3rd pin and between the 2nd pin and the 4th pin and are electrically connected the equal ground connection of the 3rd, 4,5 pin.
Said boost module 20 comprises capacitor C 2, capacitor C 3, voltage multiplier U1 and capacitor C 4; Said voltage multiplication chip U1 is the MAX1682/MAX16863 chip; The collector of said triode Q2 also is that an end of VIN pin and capacitor C 2 links to each other with the voltage input pin of voltage multiplication chip U1 respectively; The grounding leg of voltage multiplication chip U1 also is the equal ground connection of the other end of GND pin and capacitor C 2; The voltage output pin of voltage multiplication chip U1 also is that the OUT pin links to each other the other end ground connection of capacitor C 4 with triggering with the input end of driver module 30 and an end of capacitor C 4 respectively; Said capacitor C 3 is an electrochemical capacitor, and the positive pole of capacitor C 3 links to each other with the C1+ pin of voltage multiplication chip U1, and the negative pole of capacitor C 3 links to each other with the C1-pin of voltage multiplication chip U1.
As shown in Figure 2, said triggering and driver module 30 comprise resistance R 2, resistance R 3, capacitor C 5, capacitor C 6 and chip for driving U2, and said chip for driving U2 is 555 chips; The voltage output pin of said voltage multiplication chip U1 also is that the OUT pin also is that an end of VCC pin and resistance R 2 links to each other with the supply voltage input pin of chip for driving U2 respectively; The other end of resistance R 2 also is that an end of DISCHARGE pin and resistance R 3 links to each other with the discharge pin of chip for driving U2 respectively; The other end of resistance R 3 also is that the thresholding pin of TRIGGER pin, chip for driving U2 also is that an end of CONTROL THRESHOLD pin and capacitor C 5 links to each other with the triggering pin of chip for driving U2 respectively then; The resetting pin of chip for driving U2 also is that the RESET pin links to each other with the collector of said triode Q2; The control voltage pin of chip for driving U2 also is that the VOLTAGE pin links to each other with an end of capacitor C 6, and the other end of said capacitor C 5, the grounding leg of chip for driving U2 also are the equal ground connection of the other end of GND pin and capacitor C 6; The output pin of said chip for driving U2 also is that the OUTPUT pin is electrically connected with the input end of alarm module 40.
Preferably, said capacitor C 4 is an electrochemical capacitor.
Further; Said alarm module 40 comprises resistance R 4, light emitting diode L1 and hummer; The output pin of said chip for driving U2 also is that the OUTPUT pin links to each other with an end of hummer and an end of resistance R 4 respectively; The other end of resistance R 4 links to each other with the anode of light emitting diode L1, the negative electrode of light emitting diode L1 and the equal ground connection of the other end of hummer.
Said voltage detecting alarm module 50 comprises resistance R 5, resistance R 6, resistance R 7, light emitting diode L2, voltage checking chip U4 and capacitor C 7; Said voltage checking chip U4 is the XC61C family chip; One end of resistance R 5 and an end of resistance R 6 link to each other with the positive pole of power supply ST1 respectively; The other end of resistance R 5 links to each other with the anode of light emitting diode L2, and the negative electrode of light emitting diode L2 also is that the OUT pin links to each other with the voltage output pin of voltage checking chip U4; The other end of resistance R 6 also is that an end of VIN pin, capacitor C 7 and an end of resistance R 7 link to each other with the voltage input pin of voltage checking chip U4 respectively then, and the grounding leg of voltage checking chip U4 also is the other end of GND pin, capacitor C 7 and the equal ground connection of the other end of resistance R 7.
From the above, said voltage detecting alarm module 50 is different with the warning message that alarm module 40 sends, and person easy to use distinguishes and make corresponding operation.
As the preferred version of the utility model, said power supply ST1 is lithium battery or dry cell batteries, and the positive terminal of power supply ST1 is provided with fuse, and described tinsel S material can be conductive materials such as iron, copper, aluminium.
Below in conjunction with Fig. 2 the course of work of the utility model is described further.
1), when wire break alarm is in when deploying troops on garrison duty state, also be that CS P1 is in when deploying troops on garrison duty gear, this moment, the 2nd pin of CS P1 was connected with the 4th pin; The 5th pin is connected with the 7th pin; If tinsel is not broken by extraneous violence damage, this moment, triode Q1 and triode Q2 all ended, to such an extent as to triode Q2 collector is output as 0; So the boost module of back, triggering and driver module and alarm module are not all worked, resistance R 1 and the work of voltage detecting alarm module only there is this moment.
After tinsel is by extraneous violence damage and disconnection; This moment triode Q1 and equal conducting of triode Q2; Triode Q2 collector promptly can output voltage and is driven boost module, triggering and driver module and the alarm module work of back, notes and takes counter-measure with the prompting stakeholder.
2), when wire break alarm is in test mode; Also be that CS P1 is in when testing gear, this moment, the 2nd pin of CS P1 was connected with the 3rd pin, and the 6th pin is connected with the 7th pin; Because the 6th pin is a neutral; Then the tinsel no power is equivalent to tinsel S by the state of violence damage, and triode Q1 and all conductings of triode Q2 at this moment; Triode Q2 collector promptly can output voltage and is driven boost module, triggering and driver module and the alarm module work of back, whether is in comparatively good working order thereby make operating personnel can clearly understand whole wire break alarm.
3), be in when withdrawing a garrison state when wire break alarm; Also be that CS P1 is in when withdrawing a garrison gear; This moment, the 2nd pin of CS P1 was connected with the 1st pin, and the 8th pin is connected with the 7th pin, because the 1st, 8 pin are neutral; Whole wire break alarm is in off-position, therefore helps the client and is engaged in maintenance or other operations.
Claims (10)
1. wire break alarm, it is characterized in that: this wire break alarm comprises signals collecting and control module (10); Said signals collecting is electrically connected with the input end of boost module (20) with the output terminal of control module (10); The output terminal of said boost module (20) is electrically connected with the input end of triggering with driver module (30); Said triggering is electrically connected with the input end of alarm module (40) with the output terminal of driver module (30); Said signals collecting is electrically connected with voltage detecting alarm module (50) again with control module (10).
2. wire break alarm according to claim 1 is characterized in that: said signals collecting and control module (10) comprise power supply, CS, resistance R 1, capacitor C 1, triode Q1 and triode Q2; The positive pole of said power supply links to each other with the emitter of triode Q2 and an end of resistance R 1 respectively, and the other end of resistance R 1 is provided with the tinsel (S) that is used to guard against theft, and said CS is arranged between the negative pole and tinsel (S) of power supply; The end that said resistance R 1 links to each other with tinsel (S) also links to each other with the base stage of triode Q1 and an end of capacitor C 1 respectively; The collector of triode Q1 links to each other with the base stage of triode Q2; The equal ground connection of the other end of the emitter of triode Q1 and capacitor C 1, the collector of said triode Q2 is electrically connected with the input end of boost module (20).
3. wire break alarm according to claim 2 is characterized in that: said CS is three driving switch, is arranged with 8 pin, and wherein the 1st, 8 pin are oppositely arranged and constitute the gear of withdrawing a garrison; 2nd, 7 be oppositely arranged and the 2nd pin links to each other with power cathode, the 7th pin links to each other with tinsel (S); 3rd, 6 pin are oppositely arranged and constitute the test gear; 4th, 5 pin are oppositely arranged and constitute the gear of deploying troops on garrison duty; Above-mentioned the 1st, 6,8 pin are neutral, are between the 2nd pin and the 3rd pin and between the 2nd pin and the 4th pin and are electrically connected the equal ground connection of the 3rd, 4,5 pin.
4. wire break alarm according to claim 3; It is characterized in that: said boost module (20) comprises capacitor C 2, capacitor C 3, voltage multiplication chip U1 and capacitor C 4; Said voltage multiplication chip U1 is the MAX1682/MAX1683 chip; The collector of said triode Q2 links to each other with the voltage input pin of voltage multiplication chip U1 and an end of capacitor C 2 respectively; The equal ground connection of the other end of the grounding leg of voltage multiplication chip U1 and capacitor C 2, the voltage output pin of voltage multiplication chip U1 link to each other the other end ground connection of capacitor C 4 with triggering with the input end of driver module (30) and an end of capacitor C 4 respectively; Said capacitor C 3 is an electrochemical capacitor, and the positive pole of capacitor C 3 links to each other with the C1+ pin of voltage multiplication chip U1, and the negative pole of capacitor C 3 links to each other with the C1-pin of voltage multiplication chip U1.
5. wire break alarm according to claim 4 is characterized in that: said triggering and driver module (30) comprise resistance R 2, resistance R 3, capacitor C 5, capacitor C 6 and chip for driving U2, and said chip for driving U2 is 555 chips; The voltage output pin of said voltage multiplication chip U1 links to each other with the supply voltage pin of chip for driving U2 and an end of resistance R 2 respectively; The other end of resistance R 2 links to each other with the discharge pin of chip for driving U2 and an end of resistance R 3 respectively; The other end of resistance R 3 then links to each other with the triggering pin of chip for driving U2, the thresholding pin of chip for driving U2 and an end of capacitor C 5 respectively; The resetting pin of chip for driving U2 links to each other with the collector of said triode Q2; The control voltage pin of chip for driving U2 links to each other with an end of capacitor C 6, the equal ground connection of the other end of the other end of said capacitor C 5, the grounding leg of chip for driving U2 and capacitor C 6; The output pin of said chip for driving U2 is electrically connected with the input end of alarm module (40).
6. wire break alarm according to claim 4 is characterized in that: said capacitor C 4 is electrochemical capacitor.
7. wire break alarm according to claim 5; It is characterized in that: said alarm module (40) comprises resistance R 4, light emitting diode L1 and hummer; The output pin of said chip for driving U2 links to each other with an end of hummer and an end of resistance R 4 respectively; The other end of resistance R 4 links to each other with the anode of light emitting diode L1, the negative electrode of light emitting diode L1 and the equal ground connection of the other end of hummer.
8. according to each described wire break alarm of claim 2～7, it is characterized in that: said power supply is lithium battery or dry cell batteries, and the positive terminal of power supply is provided with fuse, and the material of described tinsel (S) is iron or copper or aluminium.
9. according to each described wire break alarm of claim 2～7; It is characterized in that: said voltage detecting alarm module (50) comprises resistance R 5, resistance R 6, resistance R 7, light emitting diode L2, voltage checking chip U4 and capacitor C 7; Said voltage checking chip U4 is the XC61C family chip; One end of resistance R 5 and an end of resistance R 6 link to each other with the positive pole of power supply simultaneously; The other end of resistance R 5 links to each other with the anode of light emitting diode L2, and the negative electrode of light emitting diode L2 links to each other with the voltage output pin of voltage checking chip U4; The other end of resistance R 6 then links to each other the equal ground connection of the other end of the other end of the grounding leg of voltage checking chip U4, capacitor C 7 and resistance R 7 with the voltage input pin of voltage checking chip U4, an end of capacitor C 7 and an end of resistance R 7 respectively.
10. wire break alarm according to claim 9 is characterized in that: said power supply is lithium battery or dry cell batteries, and the positive terminal of power supply is provided with fuse, and the material of described tinsel (S) is iron or copper or aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205613437U CN202422325U (en) | 2011-12-28 | 2011-12-28 | Wire break alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205613437U CN202422325U (en) | 2011-12-28 | 2011-12-28 | Wire break alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202422325U true CN202422325U (en) | 2012-09-05 |
Family
ID=46747063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205613437U Expired - Fee Related CN202422325U (en) | 2011-12-28 | 2011-12-28 | Wire break alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202422325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169648A (en) * | 2018-02-07 | 2018-06-15 | 上海健康医学院 | A kind of electrosurgical equipment insulation defect detector |
-
2011
- 2011-12-28 CN CN2011205613437U patent/CN202422325U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169648A (en) * | 2018-02-07 | 2018-06-15 | 上海健康医学院 | A kind of electrosurgical equipment insulation defect detector |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20171228 |