CN109951669A - Building talkback indoor terminal and its security detection method - Google Patents
Building talkback indoor terminal and its security detection method Download PDFInfo
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- CN109951669A CN109951669A CN201910314982.4A CN201910314982A CN109951669A CN 109951669 A CN109951669 A CN 109951669A CN 201910314982 A CN201910314982 A CN 201910314982A CN 109951669 A CN109951669 A CN 109951669A
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- switching value
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Abstract
The invention discloses a kind of building talkback indoor terminals to realize that building talkback equipment and security device combine in the sending alarm when in an abnormal state of external switching value.The output end of a kind of building talkback indoor terminal, including security alarm module, analog switch unit accesses the successional switching value analog signal of multichannel, and the output end of analog switch unit is electrically connected with the input terminal of dual comparator unit；The output end of dual comparator unit is electrically connected with processing module；Wherein, it opens to the analog switch unit poll every path analoging switch and sequentially seriatim inputs switching value analog signal to dual comparator, switching value analog signal is compared by dual comparator with threshold range, and comparison result is supplied to security alarm processing unit；Comparison result alert of the security alarm processing unit according to switching value analog signal not in threshold range.The invention also discloses a kind of security detection methods for building talkback indoor terminal.
Description
Technical field
The invention belongs to the technical fields of building gate control system, concretely relate to a kind of building talkback indoor terminal.
Background technique
Building talkback is mounted on the buildings such as residential quarters, unit building, office building or groups of building, is identified with image and sound
Visiting guest, the equipment for controlling door lock and realizing other miscellaneous functions.
Building talkback includes building talkback indoor terminal (indoor unit) and doorway machine.Currently, publication number CN103745559A,
Publication date is that on 04 23rd, 2014 Chinese invention patent applications disclose in a kind of video intercom room with safety protection function
Terminal, in combination with multiple sensors, to judge the alerts such as fire, gas leakage.However, can not be tied for passive switching value
Close application.
Summary of the invention
The object of the present invention is to provide a kind of building talkback indoor terminals, in external switching value hair when in an abnormal state
It alarms out, realizes that building talkback equipment and security device combine.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of building talkback indoor terminal, comprising: processing module,
Speech processing module, simulation information collection when for speech talkback, the speech processing module and the processing
Module communication connection；
Display module, for man-machine interface interaction, the display module and the processing module are communicated to connect；
Key module, for man-machine interface interaction, the key module and the processing module are communicated to connect；
It further include security alarm module, security alarm module and the processing module communicate to connect；The security alarm mould
Block includes analog switch unit, dual comparator unit and security alarm processing unit；
The output end of analog switch unit accesses the successional switching value analog signal of multichannel, the output of analog switch unit
End is electrically connected with the input terminal of dual comparator unit；The output end of dual comparator unit is electrically connected with processing module；
Wherein, open to the analog switch unit poll every path analoging switch and sequentially one by one by switching value analog signal
Ground is inputted to dual comparator, and switching value analog signal is compared by dual comparator with threshold range, and by comparison result
It is supplied to security alarm processing unit；Comparison of the security alarm processing unit according to switching value analog signal not in threshold range
As a result alert.
Preferred embodiment on the basis of above scheme and as above scheme: when switching value analog signal is in threshold range
When interior, the output end of dual comparator forms high level；When switching value analog signal is beyond in threshold range, dual comparator
Output end formed low level.
Preferred embodiment on the basis of above scheme and as above scheme: switching value include open type switching value and/
Or normally closed switch amount, it is connect through resistance one with operating voltage after open type switching value is in parallel with parallel resistance, in resistance one
Low-voltage end acquires switching value analog signal；Normally closed switch amount connects after connecting with series resistance through resistance two and operating voltage
It connects, acquires switching value analog signal in the low-voltage end of resistance two.
Preferred embodiment on the basis of above scheme and as above scheme: the dual comparator includes twin voltage ratio
Compared with device, the first reverse side of twin voltage comparator is electrically connected with the output end of analog switch unit, and the first of twin voltage comparator
In-phase end accesses the first fixed voltage, and the second in-phase end of twin voltage comparator is electrically connected with the output end of analog switch unit,
Second reverse side of twin voltage comparator accesses the second fixed voltage, and the first output end of twin voltage comparator is through pull-up resistor
R215 connects positive supply, and the second output terminal of twin voltage comparator connects positive supply through pull-up resistor R216, and the of twin voltage comparator
Common end between one output end and pull-up resistor R215 is electrically connected with the cathode of switching diode D3, and the of twin voltage comparator
Common end between two output ends and pull-up resistor R216 is electrically connected with the cathode of switching diode D4, and switching diode D3 is just
Pole connects positive supply through resistance R2, and the anode of switching diode D4 meets positive supply, switching diode D3, switch two through pull-up resistor R2
Common end between pole pipe D4 and resistance R2 is the output end of dual comparator.
Preferred embodiment on the basis of above scheme and as above scheme: the analog switch unit includes model
The chip of 74HC4051.
The invention also discloses a kind of multichannel security detection methods for building talkback indoor terminal, including acquisition signal
Step accesses the switching value of multichannel security device and forms the successional switching value analog signal of multichannel；
Signal switch step, poll opens every path analoging switch so that the multi-way switching values analog signal of access is opened from simulation
The output end for closing unit sequentially seriatim exports；
Switching value analog signal is compared with threshold range, and exports comparison result information by voltage comparison step；
Information handling step according to comparison result, and issues alarm when switching value analog signal is not in threshold range
Information.
Preferred embodiment on the basis of above scheme and as above scheme: when switching value analog signal is in threshold range
When interior, the output end of dual comparator forms high level；When switching value analog signal is beyond in threshold range, dual comparator
Output end formed low level.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that
Building talkback indoor terminal of the invention makes comparisons switching value analog signal and fixed threshold range, due to
The voltage value size of switching value analog signal is associated with the state of corresponding switching value, when the state peanut of switching value changes
When, corresponding switching value analog signal changes, exceed threshold range, thus judge that the state of switching value changes,
Cause alarm accordingly.
Detailed description of the invention
Fig. 1 is the circuit diagram of analog switch unit of the invention.
Fig. 2 is the circuit diagram of dual comparator of the invention.
Fig. 3 is the circuit diagram of On-off signal of the invention.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the attached drawing in embodiment, to reality
The technical solution applied in example is clearly and completely described, it is clear that described embodiment is only that the application a part is implemented
Example, rather than whole embodiments.Based on the embodiment provided, those of ordinary skill in the art are not before making creative work
Every other embodiment obtained is put, shall fall in the protection scope of this application.
In the description of the present application, it is to be understood that the orientation or positional relationship of the instructions such as term " on ", "lower" is base
In orientation or positional relationship shown in the drawings, it is merely for convenience of description the application and simplifies description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of application.
In the description of the present application, term " first ", " second " etc. are used for description purposes only, and should not be understood as instruction or
It implies relative importance or implicitly indicates the quantity of indicated technical characteristic.
A kind of building talkback indoor terminal, comprising: processing module, speech processing module, display module, key module, mould
Quasi- switch unit, dual comparator unit.
In one embodiment, processing module uses ITE9856 chip.
Wherein, speech processing module, simulation information collection when for speech talkback.In one embodiment, speech processes
Modular unit is also used to modulus and digital-to-analogue conversion, echo cancellor.The speech processing module and the processing module communication link
It connects.
Display module, for man-machine interface interaction, the display module and the processing module are communicated to connect.
Key module, for man-machine interface interaction, the key module and the processing module are communicated to connect.
It should be pointed out that speech processing module, display module and key module are the prior art, it is commonly used in the art
, no longer its structure is repeated here.
It further include security alarm module, security alarm module and the processing module communicate to connect.
The security alarm module includes analog switch unit, dual comparator unit and security alarm processing unit.
The output end of analog switch unit accesses the successional switching value analog signal of multichannel.
In the present embodiment, switching value analog signal is associated with security device.Security device for example can be smoke alarm,
Hygrosensor, combustible gas probe, curtain-type infrared detector, gate inhibition.Security device has switching value.In switching value
It can get the closed state and off-state of switching value on auxiliary contact.
In one embodiment, switching value includes open type switching value and/or normally closed switch amount.Open type switching value with simultaneously
It is connect through resistance one with operating voltage after connection resistor coupled in parallel, acquires switching value analog signal in the low-voltage end of resistance one.It is normally closed
Type switching value is connect through resistance two with operating voltage after connecting with series resistance, acquires switching value mould in the low-voltage end of resistance two
Quasi- signal.
In the present invention, the branch after open type switching value is in parallel with parallel resistance, switching value are converted to by off-state
When closed state, the resistance value of the branch changes, corresponding obtained current potential, i.e. the voltage value hair of switching value analog signal
Changing.Similarly, the branch after normally closed switch amount is connected with series resistance, switching value are converted to off-state by closed state
When, the voltage value of pass amount analog signal changes.
The output end of analog switch unit is electrically connected with the input terminal of dual comparator unit；Dual comparator unit it is defeated
Outlet is electrically connected with processing module.
Wherein, open to the analog switch unit poll every path analoging switch and sequentially one by one by switching value analog signal
Ground is inputted to dual comparator, and switching value analog signal is compared by dual comparator with threshold range, and by comparison result
It is supplied to security alarm processing unit；Comparison of the security alarm processing unit according to switching value analog signal not in threshold range
As a result alert.
Warning message is transferred to processing module, after processing module information processing, is sent out alarm by network module
Information.Warning message receiving end can be supervisor and/or mobile terminal.
In the present invention, switching value analog signal and fixed threshold range are made comparisons, due to switching value analog signal
Voltage value size and the state of corresponding switching value it is associated, when the variation of the state peanut of switching value, corresponding switching value
Analog signal changes, and exceeds threshold range, to judge that the state of switching value changes, causes alarm accordingly.
The analog switch unit includes the chip of model 74HC4051.It is inputted with 8 way switch amounts.In contrast
It answers, one branch of resistance has 8 tunnels, and resistance one is respectively R217, R218, R219, R220, R221, R222, R223, R224.This
Sample correspondingly can access 8 way switch amounts.It should be pointed out that in specific application, can only access all the way or a few roads.
The dual comparator includes twin voltage comparator, the model LM393 of twin voltage comparator, twin voltage comparator
The first reverse side be electrically connected with the output end of analog switch unit, the first in-phase end of twin voltage comparator access first is fixed
Second in-phase end of voltage, twin voltage comparator is electrically connected with the output end of analog switch unit, and the second of twin voltage comparator
Reverse side accesses the second fixed voltage, and the first output end of twin voltage comparator connects positive supply, twin voltage through pull-up resistor R215
The second output terminal of comparator connects positive supply, the first output end and pull-up resistor of twin voltage comparator through pull-up resistor R216
Common end between R215 is electrically connected with the cathode of switching diode D3, the second output terminal and pull-up resistor of twin voltage comparator
Common end between R216 is electrically connected with the cathode of switching diode D4, and the anode of switching diode D3 connects positive electricity through resistance R2
The anode in source, switching diode D4 connects positive supply through pull-up resistor R2, switching diode D3, switching diode D4 and resistance R2 it
Between common end be dual comparator output end.Wherein, the first fixed voltage is greater than the second solid voltage.First fixed voltage and
The range of voltage values of second fixed voltage is threshold range.In one embodiment, resistance R204, resistance R205, resistance R206
After series connection, a termination+5V operating voltage of resistance R204, one end ground connection of resistance R206, in first resistor R204 and resistance
Common end between R205 obtains the first fixed voltage, and the common end between first resistor R205 and resistance R206 obtains second
Fixed voltage.
When switching value analog signal is in threshold range, the output end of dual comparator forms high level；Work as switching value
When analog signal is beyond in threshold range, the output end of dual comparator forms low level.
At work, when the voltage value of switching value analog signal is in the range of the first fixed voltage and the second fixed voltage
When, the first output pin of twin voltage comparator exports high level, switching diode D3 cut-off, the second output of twin voltage comparator
Foot exports high level, switching diode D4 cut-off, and the output end of dual comparator obtains high level.When switching value analog signal
When voltage value is greater than the first fixed voltage, the first output pin output low level of twin voltage comparator, and twin voltage comparator
Second output pin exports high level, in this way, switching diode D3 is connected, and switching diode D4 ends, in dual comparator
Output end obtains low level.When the voltage value of switching value analog signal is less than the second fixed voltage, correspondingly, switching diode
D3 cut-off, and switching diode D4 is connected, and obtains low level in the output end of dual comparator.
The every 100ms of analog switch unit opens every path analoging switch by poll, so that it is outer to detect to allow dual comparator
The state of portion's security device, i.e., when security device is in normal condition, dual comparator exports high level, at security device
When abnormality, the voltage value of dual comparator is inputted not in threshold range, and at this moment dual comparator exports low level.
Invention additionally discloses a kind of multichannel security detection methods for building talkback indoor terminal, including acquisition signal step
Suddenly, it accesses the switching value of multichannel security device and forms the successional switching value analog signal of multichannel；Signal switch step, poll
Open every path analoging switch so that access multi-way switching values analog signal from the output end of analog switch unit sequentially seriatim
Output；Switching value analog signal is compared with threshold range, and exports comparison result information by voltage comparison step；Information
Processing step, foundation comparison result, and the alert when switching value analog signal is not in threshold range.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore: it is all according to
The equivalence changes that structure of the invention, shape, principle are done, should all be covered by within protection scope of the present invention.
Claims (7)
1. a kind of building talkback indoor terminal, comprising: processing module,
Speech processing module, simulation information collection when for speech talkback, the speech processing module and the processing module
Communication connection；
Display module, for man-machine interface interaction, the display module and the processing module are communicated to connect；
Key module, for man-machine interface interaction, the key module and the processing module are communicated to connect；
It is characterized by also including security alarm module, security alarm module and the processing module are communicated to connect；The security protection
Alarm module includes analog switch unit, dual comparator unit and security alarm processing unit；
The output end of analog switch unit accesses the successional switching value analog signal of multichannel, the output end of analog switch unit with
The input terminal of dual comparator unit is electrically connected；The output end of dual comparator unit is electrically connected with processing module；
Wherein, open to the analog switch unit poll every path analoging switch and by switching value analog signal sequentially seriatim to
Dual comparator input, switching value analog signal is compared by dual comparator with threshold range, and comparison result is provided
Give security alarm processing unit；Comparison result of the security alarm processing unit according to switching value analog signal not in threshold range
Alert.
2. building talkback indoor terminal according to claim 1, it is characterised in that: when switching value analog signal is in threshold value model
When enclosing interior, the output end of dual comparator forms high level；When switching value analog signal is beyond in threshold range, double comparisons are electric
The output end on road forms low level.
3. building talkback indoor terminal according to claim 1, it is characterised in that: switching value includes open type switching value
And/or normally closed switch amount, it is connect through resistance one with operating voltage after open type switching value is in parallel with parallel resistance, in resistance one
Low-voltage end acquire switching value analog signal；Normally closed switch amount connects after connecting with series resistance through resistance two and operating voltage
It connects, acquires switching value analog signal in the low-voltage end of resistance two.
4. building talkback indoor terminal according to claim 2, it is characterised in that: the dual comparator includes twin voltage
First reverse side of comparator, twin voltage comparator is electrically connected with the output end of analog switch unit, and the of twin voltage comparator
It is mutually terminated together into the first fixed voltage, the second in-phase end of twin voltage comparator and the output end of analog switch unit are electrically connected
It connects, the second reverse side of twin voltage comparator accesses the second fixed voltage, and the first output end of twin voltage comparator is through pull-up electricity
Resistance R215 connects positive supply, and the second output terminal of twin voltage comparator connects positive supply through pull-up resistor R216, twin voltage comparator
Common end between first output end and pull-up resistor R215 is electrically connected with the cathode of switching diode D3, twin voltage comparator
Common end between second output terminal and pull-up resistor R216 is electrically connected with the cathode of switching diode D4, switching diode D3's
Anode connects positive supply through resistance R2, and the anode of switching diode D4 meets positive supply, switching diode D3, switch through pull-up resistor R2
Common end between diode D4 and resistance R2 is the output end of dual comparator.
5. building talkback indoor terminal according to claim 1, it is characterised in that: the analog switch unit includes model
For the chip of 74HC4051.
6. a kind of multichannel security detection method for building talkback indoor terminal, it is characterised in that: including acquiring signals step,
It accesses the switching value of multichannel security device and forms the successional switching value analog signal of multichannel；Signal switch step, poll are beaten
Every path analoging switch is opened so that the output end of multi-way switching values analog signal from the analog switch unit of access is sequentially seriatim defeated
Out；
Switching value analog signal is compared with threshold range, and exports comparison result information by voltage comparison step；
Information handling step, foundation comparison result, and the alert when switching value analog signal is not in threshold range.
7. the multichannel security detection method according to claim 6 for building talkback indoor terminal, it is characterised in that: when
When switching value analog signal is in threshold range, the output end of dual comparator forms high level；When switching value analog signal is super
When out in threshold range, the output end of dual comparator forms low level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314982.4A CN109951669B (en) | 2019-04-18 | 2019-04-18 | Building intercom indoor terminal and security detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314982.4A CN109951669B (en) | 2019-04-18 | 2019-04-18 | Building intercom indoor terminal and security detection method thereof |
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| CN109951669A true CN109951669A (en) | 2019-06-28 |
| CN109951669B CN109951669B (en) | 2021-08-06 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1979000087A1 (en) * | 1977-08-05 | 1979-02-22 | L Wern | Touch control switch |
| GB2165651A (en) * | 1984-09-24 | 1986-04-16 | Electromatic | Inductive loop detector |
| DE4220460A1 (en) * | 1992-06-23 | 1994-01-05 | Sel Alcatel Ag | Mains AC-powered load protection appts. against unauthorised removal of household power tool - exploits sensitivity of transformer-coupled circuit to residual current through 150-nanofarad interference suppression capacitor, when tool is switched off yet plugged in using active rectifier, comparator and relay. |
| CN103474953A (en) * | 2013-09-11 | 2013-12-25 | 张成虎 | Single-phase mains voltage controller |
| CN205019039U (en) * | 2015-08-18 | 2016-02-10 | 北京理工大学珠海学院 | Multi -functional electronic monitor |
| US20160070281A1 (en) * | 2014-09-10 | 2016-03-10 | Richtek Technology Corporation | Control circuit of power converter |
| CN206162235U (en) * | 2016-11-07 | 2017-05-10 | 郑州华力信息技术有限公司 | Electric current adjustable constant current source is used in electric power control |
| CN206629188U (en) * | 2017-02-21 | 2017-11-10 | 珠海三润电子有限公司 | A kind of door phones of building with security alarm |
-
2019
- 2019-04-18 CN CN201910314982.4A patent/CN109951669B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1979000087A1 (en) * | 1977-08-05 | 1979-02-22 | L Wern | Touch control switch |
| GB2165651A (en) * | 1984-09-24 | 1986-04-16 | Electromatic | Inductive loop detector |
| DE4220460A1 (en) * | 1992-06-23 | 1994-01-05 | Sel Alcatel Ag | Mains AC-powered load protection appts. against unauthorised removal of household power tool - exploits sensitivity of transformer-coupled circuit to residual current through 150-nanofarad interference suppression capacitor, when tool is switched off yet plugged in using active rectifier, comparator and relay. |
| CN103474953A (en) * | 2013-09-11 | 2013-12-25 | 张成虎 | Single-phase mains voltage controller |
| US20160070281A1 (en) * | 2014-09-10 | 2016-03-10 | Richtek Technology Corporation | Control circuit of power converter |
| CN205019039U (en) * | 2015-08-18 | 2016-02-10 | 北京理工大学珠海学院 | Multi -functional electronic monitor |
| CN206162235U (en) * | 2016-11-07 | 2017-05-10 | 郑州华力信息技术有限公司 | Electric current adjustable constant current source is used in electric power control |
| CN206629188U (en) * | 2017-02-21 | 2017-11-10 | 珠海三润电子有限公司 | A kind of door phones of building with security alarm |
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| CN109951669B (en) | 2021-08-06 |
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