CN105788200A - Smoke alarm sensitivity detection device - Google Patents
Smoke alarm sensitivity detection device Download PDFInfo
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- CN105788200A CN105788200A CN201610330170.5A CN201610330170A CN105788200A CN 105788200 A CN105788200 A CN 105788200A CN 201610330170 A CN201610330170 A CN 201610330170A CN 105788200 A CN105788200 A CN 105788200A
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- operational amplifier
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- smog
- resistance
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/12—Checking intermittently signalling or alarm systems
- G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
- G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits
Abstract
The invention discloses a smoke alarm sensitivity detection device, comprising a case body whose lower end is provided with an opening, a smog generating device, a concentration detection circuit, a control circuit and a blowing device. The concentration detection circuit is connected to the control circuit; the control circuit is connected with the blowing device; the control circuit is provided with a concentration reference range; the case body is mounted on an assembly line which seals the lower end opening of the case body, and a sealed smog chamber is formed in the case body; a lower part of a front end of the case body is provided with an entrance where a first flexible door is arranged, and a lower part of a rear end of the case body is provided with an exit where a second flexible door is arranged; the smog generating device is arranged at the rear part of the smog chamber; the case body is provided with a separator plate therein; a distance is kept between the front end of the separator plate and the case body; a distance is kept between the rear part of the separator plate and the smog generating device; an upper flue is formed between the separator plate and the top of the case body; a lower flue is formed between the separator plate and the assembly line. The detection device has advantages such as high detection precision, strong operability and high detection efficiency.
Description
Technical field
The present invention relates to a kind of sensitivity technique equipment, especially relate to the sensitivity technique equipment of a kind of smoke alarm.
Background technology
Sensitivity is an important technology index of smoke alarm, and the quality of the sensitivity of smoke alarm directly determines the quality of smoke alarm quality.The manufacturer of smoke alarm is when producing smoke alarm, it is necessary to each smoke alarm carries out the detection of sensitivity.But, owing to the detection environment of the sensitivity of smoke alarm is the smoky environment of constant density, in the environment closed, it being easily able to the constant of smokescope, but be difficult to make smokescope controlled in open environment, smoky environment is difficult to.The sensitivity technique equipment closed box of existing a kind of smoke alarm realizes the smoky environment of alarm sensitivity technique, this sensitivity technique equipment is to mosquito incense cigarette in closed box, the general concentration in closed box is read by easy device, when detection, product is put into closed box, product is taken out again after having tested, but this sensitivity technique equipment smoky environment error is bigger, sensitivity technique precision is relatively low, and manual type picks and places product, operability is poor, and detection efficiency is relatively low.
Summary of the invention
It is high that the technical problem to be solved is to provide a kind of accuracy of detection, workable, and the sensitivity technique equipment of the higher smoke alarm of detection efficiency.
This invention address that the technical scheme that above-mentioned technical problem adopts is: the sensitivity technique equipment of a kind of smoke alarm, including the housing of lower ending opening, smoke generating device, Concentration Testing circuit, control circuit and blowing device, described Concentration Testing circuit and described control circuit connect, described control circuit and described blowing device connect, and are provided with concentration reference value scope in described control circuit；Described housing is arranged on streamline, and the lower ending opening of described housing is closed by described streamline, forms the smog chamber closed in now described housing；nullThe front lower portion of described housing is provided with entrance，The rear end lower of described housing is provided with outlet，Described porch is provided with the first flexible door，Described exit is provided with the second flexible door，Described smoke generating device is arranged on the rear portion of described smog chamber，Horizontally disposed in described housing have dividing plate，Between front end and the front end of described housing of described dividing plate, there is a segment distance，Between rear end and the described smoke generating device of described dividing plate, there is a segment distance，Upper flue is formed between the top of described dividing plate and described housing，Lower flue is formed between described dividing plate and described streamline，Described blowing device for blowing to the front portion of described smog chamber by the smog of described smoke generating device generation along described upper flue from the rear portion of described smog chamber，The rear portion of described smog chamber is blowed to again along described lower flue from the front portion of described smog chamber；nullWhen detecting the sensitivity of smoke alarm，Described smoke generating device produces smog，Described blowing device blows smog in order makes the smog in described smog chamber balanced，Described Concentration Testing circuit detects the smokescope in described smog chamber in real time and generates the real-time detected value of concentration and be sent to described control circuit，Described control circuit judges whether the real-time detected value of concentration falls within the scope of concentration reference value，If whether the real-time detected value of concentration falls within the scope of concentration reference value，Described control circuit controls described smoke generating device and closes，If the real-time detected value of concentration does not fall within the scope of concentration reference value，Described control circuit controls described smoke generating device and opens，Smoke alarm to be measured is delivered to first flexible door described in the extruding of porch of described housing and enters in described smog chamber by streamline，Described smog chamber is left then through being extruded the second described flexible door by the exit of described housing，Realize the Aulomatizeted Detect of smoke alarm sensitivity.
Being provided with disturbing flow device in described upper flue, described disturbing flow device includes multiple first spoilers that interval is inclined on described dividing plate upper surface and multiple second spoilers that interval is inclined in described case top；Along clockwise direction, the described angle between the first spoiler and described dividing plate is acute angle, and the angle between the second described spoiler and the top of described housing is acute angle.
Described Concentration Testing circuit includes infrared transmission module, infrared receiving module, amplifier and converter；Described infrared transmission module is for driving described infrared receiving module, the outfan of described infrared receiving module and the input of described amplifier connect, the outfan of described amplifier and the input of described converter connect, and the outfan of described converter and described control circuit connect.
Described amplifier includes electrical switch, the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the 5th electric capacity；The model of described electrical switch is ADG409BR, and the model of the first described operational amplifier, the second described operational amplifier and the 3rd described operational amplifier is AD708AH；nullOne end of the first described resistance、One end of the 4th described electric capacity and the 2nd foot connection of the first described operational amplifier and its link are the input of described amplifier，3rd foot of the first described operational amplifier accesses the first reference voltage，1st foot of the first described operational amplifier、The other end of the first described resistance、The other end of the 4th described electric capacity and one end of the second described resistance connect，The other end of the second described resistance and the 8th foot of described electrical switch connect，4th foot of described electrical switch、5th foot of the first described operational amplifier and one end of the first described electric capacity connect，5th foot of described electrical switch、One end of the second described electric capacity and the 3rd foot of the second described operational amplifier connect，The other end of the first described electric capacity、The other end of the second described electric capacity、4th foot of the first described operational amplifier、4th foot of the second described operational amplifier and the 4th equal ground connection of foot of the 3rd described operational amplifier，6th foot of the first described operational amplifier、7th foot of the first described operational amplifier and one end of the 3rd described resistance connect，The other end of the 3rd described resistance and the 5th foot of the second described operational amplifier connect，2nd foot of the second described operational amplifier、1st foot of the second described operational amplifier and one end of the 5th described resistance connect，The other end of the 5th described resistance、6th foot of the second described operational amplifier、One end of the 4th described resistance and one end of the 3rd described electric capacity connect，The other end of the 4th described resistance、The other end of the 3rd described electric capacity、One end of the 6th described resistance and the 7th foot of the second described operational amplifier connect，The other end of the 6th described resistance and the 5th foot of the 3rd described operational amplifier connect，6th foot of the 3rd described operational amplifier、One end of the 7th described resistance、One end of the 8th described resistance and one end of the 5th described electric capacity connect，Another beginning of the 8th described resistance accesses the second reference voltage，The other end of the 5th described electric capacity、The other end of the 7th described resistance and the 7th foot connection of the 3rd described operational amplifier and its link are the outfan of described amplifier，8th foot of the first described operational amplifier、8th foot of the second described operational amplifier and the 8th foot of the 3rd described operational amplifier all access supply voltage.In this structure, model is the switching that the electrical switch of ADG409BR realizes internal double switch under outside pulse signal controls, the internal double switch of electrical switch is connected with the first operational amplifier and the second operational amplifier respectively, the pulse signal that thus amplifier receives amplified according to the order of sequence by the first operational amplifier and the second operational amplifier after again through the 3rd operational amplifier by combined amplifier, it is ensured that the degree of accuracy that signal amplifies.
Described supply voltage is 5V, and the first described reference voltage is 0.6V, and the second described reference voltage is 2V.
Described smoke generating device includes air pump and liquid paraffin bottle, and described air pump is for gasifying the liquid paraffin in described liquid paraffin bottle as smog.
Described blowing device includes the first fan and the second fan, the first described fan is arranged on above the rear end of described dividing plate, the first described fan for blowing to the front portion of described smog chamber by the smog of described smoke generating device generation along described upper flue from the rear portion of described smog chamber, the second described fan is arranged on the lower section of described dividing plate front end, and the second described fan for blowing to the rear portion of described smog chamber by smog along described lower flue from the front portion of described smog chamber.
The top of described housing is provided with draft fan, and described draft fan is for discharging the remaining smog in described smog chamber outside described smog chamber before detection.
The first described flexible door and the second described flexible door adopt bristle to be prepared from.
Compared with prior art, it is an advantage of the current invention that by arranging the housing of lower ending opening, smoke generating device, Concentration Testing circuit, control circuit and blowing device, Concentration Testing circuit and control circuit connect, control circuit and blowing device connect, and are provided with concentration reference value scope in control circuit；Housing is arranged on streamline, and the lower ending opening of housing is closed by streamline, now forms the smog chamber closed in housing；The front lower portion of housing is provided with entrance, the rear end lower of housing is provided with outlet, porch is provided with the first flexible door, exit is provided with the second flexible door, smoke generating device is arranged on the rear portion of smog chamber, horizontally disposed in housing have dividing plate, between front end and the front end of housing of dividing plate, there is a segment distance, between rear end and the smoke generating device of dividing plate, there is a segment distance, upper flue is formed between dividing plate and the top of housing, lower flue is formed between dividing plate and streamline, blowing device for blowing to the front portion of smog chamber by the smog of smoke generating device generation along upper flue from the rear portion of smog chamber, the rear portion of smog chamber is blowed to again along lower flue from the front portion of smog chamber；nullWhen detecting the sensitivity of smoke alarm，Smoke generating device produces smog，Blowing device blows smog in order makes the smog in smog chamber balanced，Concentration Testing circuit detects the smokescope in smog chamber in real time and generates the real-time detected value of concentration and be sent to control circuit，Control circuit judges whether the real-time detected value of concentration falls within the scope of concentration reference value，If whether the real-time detected value of concentration falls within the scope of concentration reference value，Control circuit controls smoke generating device and closes，If the real-time detected value of concentration does not fall within the scope of concentration reference value，Control circuit controls smoke generating device and opens，Thereby guarantee that the smokescope in smog chamber is within the scope of concentration reference value，Make the smoky environment that sensitivity technique environment is constant density of smoke alarm，The porch that smoke alarm to be measured is delivered to housing by streamline extrudes in the first flexible door entrance smog chamber，Smog chamber is left then through being extruded the second flexible door by the exit of housing，It is achieved in the Aulomatizeted Detect of smoke alarm sensitivity，Accuracy of detection is high，The detection process of automatization，Workable，Detection efficiency is higher；
When being provided with disturbing flow device in upper flue, disturbing flow device includes multiple first spoilers that interval is inclined on dividing plate upper surface and interval is obliquely installed multiple second spoilers on top of the housing；Along clockwise direction, angle between first spoiler and dividing plate is acute angle, when angle between second spoiler and the top of housing is acute angle, by smog and air ordered mixing, ensure that smog circulates according to fixed-direction, improve velocity of liquid assets and the mixing uniformity of smog indoor smog, improve the accuracy of smokescope in smog chamber further, improve the sensitivity technique precision of smoke alarm；
When Concentration Testing circuit includes infrared transmission module, infrared receiving module, amplifier and converter, the outfan of infrared receiving module and the input of amplifier connect, the outfan of amplifier and the input of converter connect, when the outfan of converter and control circuit connect, infrared transmission module drives infrared receiving module work, infrared receiving module work gathers smokescope signal and is sent to amplifier, amplifier is converted to digital signal (i.e. the real-time detected value of smokescope) again through converter after being amplified by the smokescope signal received and is sent to control circuit, control circuit is turned on or off smoke generating device according to the real-time detected value of smokescope, it is achieved in the detection in real time of smokescope and adjusts in real time, circuit structure is simple；
Include air pump and liquid paraffin bottle when smoke generating device, when air pump is for gasifying the liquid paraffin in liquid paraffin bottle as smog, simple in construction, liquid paraffin atomizing effect is good；
The first fan and the second fan is included when blowing device, first fan is arranged on above the rear end of dividing plate, first fan for blowing to the front portion of smog chamber by the smog of smoke generating device generation along upper flue from the rear portion of smog chamber, second fan is arranged on the lower section of dividing plate front end, when second fan is used for the rear portion that smog blows to smog chamber along lower flue from the front portion of smog chamber, realize the orderly of smog by the first fan and the second fan to circulate, simple in construction, less costly.
When the top of housing is provided with draft fan, draft fan is for time before detection by remaining smog vapour discharge outdoor in smog chamber, draft fan can be passed through before detection the remaining smog vapour discharge in smog chamber is outdoor, avoid remaining smog that smoky environment causes bad interference, improve sensitivity technique precision；
When the first flexible door and the second flexible door adopt bristle to be prepared from, simple in construction, less costly, ensure that, the basis of enclosed environment of smog chamber ensures the current smoothly of smoke alarm.
Accompanying drawing explanation
Fig. 1 is the structural representation of the sensitivity technique equipment of the smoke alarm of the present invention；
Fig. 2 is the side view of the sensitivity technique equipment of the smoke alarm of the present invention；
Fig. 3 is the connection figure of the Concentration Testing circuit of the sensitivity technique equipment of the smoke alarm of the present invention of the present invention, control circuit and smoke generating device；
Fig. 4 is the circuit diagram of the amplifier of the sensitivity technique equipment of the smoke alarm of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one: as shown in the figure, a kind of sensitivity technique equipment of smoke alarm, including the housing 1 of lower ending opening, smoke generating device 2, Concentration Testing circuit 3, control circuit 4 and blowing device, Concentration Testing circuit 3 and control circuit 4 connect, control circuit 4 and blowing device connect, and are provided with concentration reference value scope in control circuit 4；Housing 1 is arranged on streamline, and the lower ending opening of housing 1 is closed by streamline, now forms, in housing 1, the smog chamber closed；The front lower portion of housing 1 is provided with entrance, the rear end lower of housing 1 is provided with outlet, porch is provided with the first flexible door 5, exit is provided with the second flexible door (not shown), smoke generating device 2 is arranged on the rear portion of smog chamber, horizontally disposed in housing 1 have dividing plate 6, between front end and the front end of housing 1 of dividing plate 6, there is a segment distance, between rear end and the smoke generating device 2 of dividing plate 6, there is a segment distance, upper flue 7 is formed between the top of dividing plate 6 and housing 1, lower flue 8 is formed between dividing plate 6 and streamline, blowing device blows to the front portion of smog chamber for the smog produced by smoke generating device 2 along upper flue 7 from the rear portion of smog chamber, the rear portion of smog chamber is blowed to again along lower flue 8 from the front portion of smog chamber；nullWhen detecting the sensitivity of smoke alarm，Smoke generating device 2 produces smog，Blowing device blows smog in order makes the smog in smog chamber balanced，Concentration Testing circuit 3 detects the smokescope in smog chamber in real time and generates the real-time detected value of concentration and be sent to control circuit 4，Control circuit 4 judges whether the real-time detected value of concentration falls within the scope of concentration reference value，If whether the real-time detected value of concentration falls within the scope of concentration reference value，Control circuit 4 controls smoke generating device 2 and closes，If the real-time detected value of concentration does not fall within the scope of concentration reference value，Control circuit 4 controls smoke generating device 2 and opens，Smoke alarm to be measured is delivered to the porch of housing 1 by streamline and extrudes the first flexible door 5 and enter in smog chamber，Smog chamber is left then through being extruded the second flexible door by the exit of housing 1，Realize the Aulomatizeted Detect of smoke alarm sensitivity.
In the present embodiment, being provided with disturbing flow device in upper flue 7, disturbing flow device includes multiple first spoilers 9 that interval is inclined on dividing plate 6 upper surface and multiple second spoilers 10 that interval is inclined on housing 1 top；Along clockwise direction, the angle between the first spoiler 9 and dividing plate 6 is acute angle, and the angle between the second spoiler 10 and the top of housing 1 is acute angle.
In the present embodiment, Concentration Testing circuit 3 includes infrared transmission module, infrared receiving module, amplifier and converter；Infrared transmission module is used for driving infrared receiving module, and the outfan of infrared receiving module and the input of amplifier connect, and the outfan of amplifier and the input of converter connect, and outfan and the control circuit 4 of converter connect.
In the present embodiment, blowing device includes the first fan 11 and the second fan 12, first fan 11 is arranged on above the rear end of dividing plate 6, first fan 11 blows to the front portion of smog chamber for the smog produced by smoke generating device 2 along upper flue 7 from the rear portion of smog chamber, second fan 12 is arranged on the lower section of dividing plate 6 front end, and the second fan 12 for blowing to the rear portion of smog chamber by smog along lower flue 8 from the front portion of smog chamber.
In the present embodiment, the top of housing 1 is provided with draft fan 13, and draft fan 13 is for outdoor by the remaining smog vapour discharge in smog chamber before detection.
Embodiment two: as shown in the figure, a kind of sensitivity technique equipment of smoke alarm, including the housing 1 of lower ending opening, smoke generating device 2, Concentration Testing circuit 3, control circuit 4 and blowing device, Concentration Testing circuit 3 and control circuit 4 connect, control circuit 4 and blowing device connect, and are provided with concentration reference value scope in control circuit 4；Housing 1 is arranged on streamline, and the lower ending opening of housing 1 is closed by streamline, now forms, in housing 1, the smog chamber closed；The front lower portion of housing 1 is provided with entrance, the rear end lower of housing 1 is provided with outlet, porch is provided with the first flexible door 5, exit is provided with the second flexible door (not shown), smoke generating device 2 is arranged on the rear portion of smog chamber, horizontally disposed in housing 1 have dividing plate 6, between front end and the front end of housing 1 of dividing plate 6, there is a segment distance, between rear end and the smoke generating device 2 of dividing plate 6, there is a segment distance, upper flue 7 is formed between the top of dividing plate 6 and housing 1, lower flue 8 is formed between dividing plate 6 and streamline, blowing device blows to the front portion of smog chamber for the smog produced by smoke generating device 2 along upper flue 7 from the rear portion of smog chamber, the rear portion of smog chamber is blowed to again along lower flue 8 from the front portion of smog chamber；nullWhen detecting the sensitivity of smoke alarm，Smoke generating device 2 produces smog，Blowing device blows smog in order makes the smog in smog chamber balanced，Concentration Testing circuit 3 detects the smokescope in smog chamber in real time and generates the real-time detected value of concentration and be sent to control circuit 4，Control circuit 4 judges whether the real-time detected value of concentration falls within the scope of concentration reference value，If whether the real-time detected value of concentration falls within the scope of concentration reference value，Control circuit 4 controls smoke generating device 2 and closes，If the real-time detected value of concentration does not fall within the scope of concentration reference value，Control circuit 4 controls smoke generating device 2 and opens，Smoke alarm to be measured is delivered to the porch of housing 1 by streamline and extrudes the first flexible door 5 and enter in smog chamber，Smog chamber is left then through being extruded the second flexible door by the exit of housing 1，Realize the Aulomatizeted Detect of smoke alarm sensitivity.
In the present embodiment, being provided with disturbing flow device in upper flue 7, disturbing flow device includes multiple first spoilers 9 that interval is inclined on dividing plate 6 upper surface and multiple second spoilers 10 that interval is inclined on housing 1 top；Along clockwise direction, the angle between the first spoiler 9 and dividing plate 6 is acute angle, and the angle between the second spoiler 10 and the top of housing 1 is acute angle.
In the present embodiment, Concentration Testing circuit 3 includes infrared transmission module, infrared receiving module, amplifier and converter；Infrared transmission module is used for driving infrared receiving module, and the outfan of infrared receiving module and the input of amplifier connect, and the outfan of amplifier and the input of converter connect, and outfan and the control circuit 4 of converter connect.
In the present embodiment, smoke generating device 2 includes air pump and liquid paraffin bottle, and air pump is for gasifying the liquid paraffin in liquid paraffin bottle as smog.
In the present embodiment, blowing device includes the first fan 11 and the second fan 12, first fan 11 is arranged on above the rear end of dividing plate 6, first fan 11 blows to the front portion of smog chamber for the smog produced by smoke generating device 2 along upper flue 7 from the rear portion of smog chamber, second fan 12 is arranged on the lower section of dividing plate 6 front end, and the second fan 12 for blowing to the rear portion of smog chamber by smog along lower flue 8 from the front portion of smog chamber.
In the present embodiment, the top of housing 1 is provided with draft fan 13, and draft fan 13 is for outdoor by the remaining smog vapour discharge in smog chamber before detection.
Embodiment three: as shown in the figure, a kind of sensitivity technique equipment of smoke alarm, including the housing 1 of lower ending opening, smoke generating device 2, Concentration Testing circuit 3, control circuit 4 and blowing device, Concentration Testing circuit 3 and control circuit 4 connect, control circuit 4 and blowing device connect, and are provided with concentration reference value scope in control circuit 4；Housing 1 is arranged on streamline, and the lower ending opening of housing 1 is closed by streamline, now forms, in housing 1, the smog chamber closed；The front lower portion of housing 1 is provided with entrance, the rear end lower of housing 1 is provided with outlet, porch is provided with the first flexible door 5, exit is provided with the second flexible door (not shown), smoke generating device 2 is arranged on the rear portion of smog chamber, horizontally disposed in housing 1 have dividing plate 6, between front end and the front end of housing 1 of dividing plate 6, there is a segment distance, between rear end and the smoke generating device 2 of dividing plate 6, there is a segment distance, upper flue 7 is formed between the top of dividing plate 6 and housing 1, lower flue 8 is formed between dividing plate 6 and streamline, blowing device blows to the front portion of smog chamber for the smog produced by smoke generating device 2 along upper flue 7 from the rear portion of smog chamber, the rear portion of smog chamber is blowed to again along lower flue 8 from the front portion of smog chamber；nullWhen detecting the sensitivity of smoke alarm，Smoke generating device 2 produces smog，Blowing device blows smog in order makes the smog in smog chamber balanced，Concentration Testing circuit 3 detects the smokescope in smog chamber in real time and generates the real-time detected value of concentration and be sent to control circuit 4，Control circuit 4 judges whether the real-time detected value of concentration falls within the scope of concentration reference value，If whether the real-time detected value of concentration falls within the scope of concentration reference value，Control circuit 4 controls smoke generating device 2 and closes，If the real-time detected value of concentration does not fall within the scope of concentration reference value，Control circuit 4 controls smoke generating device 2 and opens，Smoke alarm to be measured is delivered to the porch of housing 1 by streamline and extrudes the first flexible door 5 and enter in smog chamber，Smog chamber is left then through being extruded the second flexible door by the exit of housing 1，Realize the Aulomatizeted Detect of smoke alarm sensitivity.
In the present embodiment, being provided with disturbing flow device in upper flue 7, disturbing flow device includes multiple first spoilers 9 that interval is inclined on dividing plate 6 upper surface and multiple second spoilers 10 that interval is inclined on housing 1 top；Along clockwise direction, the angle between the first spoiler 9 and dividing plate 6 is acute angle, and the angle between the second spoiler 10 and the top of housing 1 is acute angle.
In the present embodiment, Concentration Testing circuit 3 includes infrared transmission module, infrared receiving module, amplifier and converter；Infrared transmission module is used for driving infrared receiving module, and the outfan of infrared receiving module and the input of amplifier connect, and the outfan of amplifier and the input of converter connect, and outfan and the control circuit 4 of converter connect.
In the present embodiment, amplifier includes electrical switch S3, the first operational amplifier U1, the second operational amplifier U2, the 3rd operational amplifier U3, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4 and the five electric capacity C5；The model of electrical switch S3 is ADG409BR, the first operational amplifier U1, the second operational amplifier U2 and the three operational amplifier U3 model be AD708AH；nullOne end of first resistance R1、One end of 4th electric capacity C4 and the 2nd foot connection of the first operational amplifier U1 and its link are the input of amplifier，3rd foot of the first operational amplifier U1 accesses the first reference voltage RefV1，1st foot of the first operational amplifier U1、The other end of the first resistance R1、The other end of the 4th electric capacity C4 and one end of the second resistance R2 connect，The other end of the second resistance R2 and the 8th foot of electrical switch S3 connect，4th foot of electrical switch S3、5th foot of the first operational amplifier U1 and one end of the first electric capacity C1 connect，5th foot of electrical switch S3、One end of second electric capacity C2 and the 3rd foot of the second operational amplifier U2 connect，The other end of the first electric capacity C1、The other end of the second electric capacity C2、4th foot of the first operational amplifier U1、4th foot of the second operational amplifier U2 and the 4th equal ground connection of foot of the 3rd operational amplifier U3，6th foot of the first operational amplifier U1、7th foot of the first operational amplifier U1 and one end of the 3rd resistance R3 connect，The other end of the 3rd resistance R3 and the 5th foot of the second operational amplifier U2 connect，2nd foot of the second operational amplifier U2、1st foot of the second operational amplifier U2 and one end of the 5th resistance R5 connect，The other end of the 5th resistance R5、6th foot of the second operational amplifier U2、One end of 4th resistance R4 and one end of the 3rd electric capacity C3 connect，The other end of the 4th resistance R4、The other end of the 3rd electric capacity C3、One end of 6th resistance R6 and the 7th foot of the second operational amplifier U2 connect，The other end of the 6th resistance R6 and the 5th foot of the 3rd operational amplifier U3 connect，6th foot of the 3rd operational amplifier U3、One end of 7th resistance R7、One end of 8th resistance R8 and one end of the 5th electric capacity C5 connect，Another beginning of 8th resistance R8 accesses the second reference voltage RefV2，The other end of the 5th electric capacity C5、The other end of the 7th resistance R7 and the 7th foot connection of the 3rd operational amplifier U3 and its link are the outfan of amplifier，8th foot of the first operational amplifier U1、8th foot of the second operational amplifier U2 and the 8th foot of the 3rd operational amplifier U3 all access supply voltage VCC.
In the present embodiment, supply voltage VCC is 5V, first reference voltage Ref_V1 is 0.6V, second reference voltage Ref_V2 is 2V, 1st foot of electrical switch S3, the 2nd foot and the 16th foot connect a pulse signal generator respectively, pulse signal generator is Tong Bu with the tranmitting frequency of infrared transmission module, thus realizes the switching of the internal double switch of electrical switch S3 under pulse signal control, it is ensured that the orderly work of the first operational amplifier U1 and the second operational amplifier U2.
In the present embodiment, smoke generating device 2 includes air pump and liquid paraffin bottle, and air pump is for gasifying the liquid paraffin in liquid paraffin bottle as smog.
In the present embodiment, blowing device includes the first fan 11 and the second fan 12, first fan 11 is arranged on above the rear end of dividing plate 6, first fan 11 blows to the front portion of smog chamber for the smog produced by smoke generating device 2 along upper flue 7 from the rear portion of smog chamber, second fan 12 is arranged on the lower section of dividing plate 6 front end, and the second fan 12 for blowing to the rear portion of smog chamber by smog along lower flue 8 from the front portion of smog chamber.
In the present embodiment, the top of housing 1 is provided with draft fan 13, and draft fan 13 is for outdoor by the remaining smog vapour discharge in smog chamber before detection.
In the present embodiment, the first flexible door 5 and the second flexible door adopt bristle to be prepared from.
Claims (9)
1. the sensitivity technique equipment of a smoke alarm, it is characterized in that including the housing of lower ending opening, smoke generating device, Concentration Testing circuit, control circuit and blowing device, described Concentration Testing circuit and described control circuit connect, described control circuit and described blowing device connect, and are provided with concentration reference value scope in described control circuit；Described housing is arranged on streamline, and the lower ending opening of described housing is closed by described streamline, forms the smog chamber closed in now described housing；nullThe front lower portion of described housing is provided with entrance，The rear end lower of described housing is provided with outlet，Described porch is provided with the first flexible door，Described exit is provided with the second flexible door，Described smoke generating device is arranged on the rear portion of described smog chamber，Horizontally disposed in described housing have dividing plate，Between front end and the front end of described housing of described dividing plate, there is a segment distance，Between rear end and the described smoke generating device of described dividing plate, there is a segment distance，Upper flue is formed between the top of described dividing plate and described housing，Lower flue is formed between described dividing plate and described streamline，Described blowing device for blowing to the front portion of described smog chamber by the smog of described smoke generating device generation along described upper flue from the rear portion of described smog chamber，The rear portion of described smog chamber is blowed to again along described lower flue from the front portion of described smog chamber；
nullWhen detecting the sensitivity of smoke alarm，Described smoke generating device produces smog，Described blowing device blows smog in order makes the smog in described smog chamber balanced，Described Concentration Testing circuit detects the smokescope in described smog chamber in real time and generates the real-time detected value of concentration and be sent to described control circuit，Described control circuit judges whether the real-time detected value of concentration falls within the scope of concentration reference value，If whether the real-time detected value of concentration falls within the scope of concentration reference value，Described control circuit controls described smoke generating device and closes，If the real-time detected value of concentration does not fall within the scope of concentration reference value，Described control circuit controls described smoke generating device and opens，Smoke alarm to be measured is delivered to first flexible door described in the extruding of porch of described housing and enters in described smog chamber by streamline，Described smog chamber is left then through being extruded the second described flexible door by the exit of described housing，Realize the Aulomatizeted Detect of smoke alarm sensitivity.
2. the sensitivity technique equipment of a kind of smoke alarm according to claim 1, it is characterized in that being provided with in described upper flue disturbing flow device, described disturbing flow device includes multiple first spoilers that interval is inclined on described dividing plate upper surface and multiple second spoilers that interval is inclined in described case top；Along clockwise direction, the described angle between the first spoiler and described dividing plate is acute angle, and the angle between the second described spoiler and the top of described housing is acute angle.
3. the sensitivity technique equipment of a kind of smoke alarm according to claim 1, it is characterised in that described Concentration Testing circuit includes infrared transmission module, infrared receiving module, amplifier and converter；Described infrared transmission module is for driving described infrared receiving module, the outfan of described infrared receiving module and the input of described amplifier connect, the outfan of described amplifier and the input of described converter connect, and the outfan of described converter and described control circuit connect.
4. the sensitivity technique equipment of a kind of smoke alarm according to claim 3, it is characterised in that described amplifier includes electrical switch, the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the 5th electric capacity；The model of described electrical switch is ADG409BR, and the model of the first described operational amplifier, the second described operational amplifier and the 3rd described operational amplifier is AD708AH；
nullOne end of the first described resistance、One end of the 4th described electric capacity and the 2nd foot connection of the first described operational amplifier and its link are the input of described amplifier，3rd foot of the first described operational amplifier accesses the first reference voltage，1st foot of the first described operational amplifier、The other end of the first described resistance、The other end of the 4th described electric capacity and one end of the second described resistance connect，The other end of the second described resistance and the 8th foot of described electrical switch connect，4th foot of described electrical switch、5th foot of the first described operational amplifier and one end of the first described electric capacity connect，5th foot of described electrical switch、One end of the second described electric capacity and the 3rd foot of the second described operational amplifier connect，The other end of the first described electric capacity、The other end of the second described electric capacity、4th foot of the first described operational amplifier、4th foot of the second described operational amplifier and the 4th equal ground connection of foot of the 3rd described operational amplifier，6th foot of the first described operational amplifier、7th foot of the first described operational amplifier and one end of the 3rd described resistance connect，The other end of the 3rd described resistance and the 5th foot of the second described operational amplifier connect，2nd foot of the second described operational amplifier、1st foot of the second described operational amplifier and one end of the 5th described resistance connect，The other end of the 5th described resistance、6th foot of the second described operational amplifier、One end of the 4th described resistance and one end of the 3rd described electric capacity connect，The other end of the 4th described resistance、The other end of the 3rd described electric capacity、One end of the 6th described resistance and the 7th foot of the second described operational amplifier connect，The other end of the 6th described resistance and the 5th foot of the 3rd described operational amplifier connect，6th foot of the 3rd described operational amplifier、One end of the 7th described resistance、One end of the 8th described resistance and one end of the 5th described electric capacity connect，Another beginning of the 8th described resistance accesses the second reference voltage，The other end of the 5th described electric capacity、The other end of the 7th described resistance and the 7th foot connection of the 3rd described operational amplifier and its link are the outfan of described amplifier，8th foot of the first described operational amplifier、8th foot of the second described operational amplifier and the 8th foot of the 3rd described operational amplifier all access supply voltage.
5. the sensitivity technique equipment of a kind of smoke alarm according to claim 4, it is characterised in that described supply voltage is 5V, the first described reference voltage is 0.6V, and the second described reference voltage is 2V.
6. the sensitivity technique equipment of a kind of smoke alarm according to claim 1, it is characterised in that described smoke generating device includes air pump and liquid paraffin bottle, described air pump is for gasifying the liquid paraffin in described liquid paraffin bottle as smog.
7. the sensitivity technique equipment of a kind of smoke alarm according to claim 1, it is characterized in that described blowing device includes the first fan and the second fan, the first described fan is arranged on above the rear end of described dividing plate, the first described fan for blowing to the front portion of described smog chamber by the smog of described smoke generating device generation along described upper flue from the rear portion of described smog chamber, the second described fan is arranged on the lower section of described dividing plate front end, the second described fan for blowing to the rear portion of described smog chamber by smog along described lower flue from the front portion of described smog chamber.
8. the sensitivity technique equipment of a kind of smoke alarm according to claim 1, it is characterized in that the top of described housing is provided with draft fan, described draft fan is for discharging the remaining smog in described smog chamber outside described smog chamber before detection.
9. the sensitivity technique equipment of a kind of smoke alarm according to claim 1, it is characterised in that the first described flexible door and the second described flexible door adopt bristle to be prepared from.
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| CN201610330170.5A CN105788200B (en) | 2016-05-18 | 2016-05-18 | A kind of sensitivity technique equipment of smoke alarm |
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| CN201610330170.5A CN105788200B (en) | 2016-05-18 | 2016-05-18 | A kind of sensitivity technique equipment of smoke alarm |
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| CN105788200A true CN105788200A (en) | 2016-07-20 |
| CN105788200B CN105788200B (en) | 2017-10-10 |
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Cited By (1)
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| CN110579431A (en) * | 2019-09-17 | 2019-12-17 | 宁波科赛迪电子科技有限公司 | Self-adaptive dimmer and dimming measuring method thereof |
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|---|---|
| CN105788200B (en) | 2017-10-10 |
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