CN208284084U - A kind of alarm device - Google Patents
A kind of alarm device Download PDFInfo
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- CN208284084U CN208284084U CN201821022559.4U CN201821022559U CN208284084U CN 208284084 U CN208284084 U CN 208284084U CN 201821022559 U CN201821022559 U CN 201821022559U CN 208284084 U CN208284084 U CN 208284084U
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Abstract
The utility model relates to the warning technologies of the communications field, it discloses a kind of alarm devices, different state instructions is realized with pure hardware mode, solves the problems, such as to realize that alarm needs to be participated in by processor and existing occupancy processor resource and reliability are low in traditional technology.The program can be summarized as follows: a kind of simple alarm device, including the first to the 7th resistance, first to fourth triode, first capacitor, the second capacitor, buzzer and indicator light；This programme utilizes triode, resistance, capacitor, indicator light, the discrete component such as buzzer is built into easy alarm device, in addition the status signal of system output is combined with three kinds of different state instructions of pure hardware realization: logically high, logic low and pulse signal, so as to realize that indicator light is bright, lamp goes out, flash and buzzing alarm indicates.
Description
Technical field
The utility model relates to the alarm devices of the communications field, and in particular to a kind of alarm device.
Background technique
With the development of electronic technology, the structure of the circuit system of various electronic products becomes increasingly complex, whole system fortune
It is higher and higher to the requirement of hardware link in row, it is more and more important that alarm instruction is externally provided after hardware fault occurs in system.
All big enterprises' equipment of the industry communications field is all when needing externally to provide LED, buzzer alert instruction at present
Control is participated in by the processor of system, the program has the following deficiencies:
1) Software Coding, is handled and is needed by processor participation, entire alarm process, which has, occupies processor money
Source, such processor resource, for handling alarm control output, are unfavorable for processor resource optimization with regard to invisible distribution.
2), when hardware or software failure occurs in processor, externally the alarm after exports coding signal can not be controlled, thus
LED flashing can not be provided in addition, and buzzer alert etc. indicates that reliability is low.
Utility model content
The technical problem to be solved by the utility model is to proposing a kind of alarm device, realized with pure hardware mode different
State instruction, solve traditional technology in realize alarm need by processor participate in and existing occupancys processor resource and reliably
The low problem of property.
The technical scheme in the invention for solving the above technical problem is:
A kind of alarm device, including the first to the 7th resistance, first to fourth triode, first capacitor, the second capacitor, bee
Ring device and indicator light；The base stage of first triode crosses the collector of second the second triode of capacitance connection；One or three pole
The emitter of pipe is grounded；The base stage of second triode by first capacitor connect the first triode collector, the two or three
The emitter of pole pipe is grounded；The first resistor and second resistance are connected in the both ends and the three or three pole of first capacitor in parallel
Between the collector of pipe；The 3rd resistor and the 4th resistor coupled in parallel be connected to the second capacitor both ends and the third transistor
Collector between；The emitter of the third transistor connects power supply, and the base stage of third transistor connects the four or three pole
The base stage of pipe simultaneously connects the first control point by the 5th resistance, and the collector of the 4th triode passes through the second control of the 6th resistance connection
Processed, the emitter of the 4th triode connects the collector of the second triode；The buzzer connects after connecting with the 7th resistance
Between the collector and ground of first triode；The indicator light is connected between the collector and ground of the 4th triode.
As advanced optimizing, the power supply is VCC.
As advanced optimizing, the indicator light is LED light.
As advanced optimizing, first triode, the second triode are NPN type triode.
As advanced optimizing, the third transistor, the 4th triode are PNP type triode.
As advanced optimizing, the first capacitor and the second capacitor are polar capacitor, the anode and first of first capacitor
The collector of triode is connected, and the cathode of first capacitor is connected with the base stage of the second triode；The anode and second of second capacitor
The collector of triode is connected, and the cathode of the second capacitor is connected with the base stage of the first triode.
As advanced optimizing, the resistance value of the first resistor is less than the resistance value of second resistance.
As advanced optimizing, the resistance value of the resistance value of the 3rd resistor less than the 4th resistance.
As advanced optimizing, the resistance value of the resistance value of the 4th resistance less than the 6th resistance.
The beneficial effects of the utility model are: using triode, resistance, capacitor, indicator light, discrete first device such as buzzer
The alarm device that part is built into, in addition the status signal of system output is combined with three kinds of different state instructions of pure hardware realization:
Logically high, logic low and pulse signal, so as to realize that indicator light is bright, lamp goes out, flash and buzzing alarm indicates.
Due to do not need processor participate in realize alarm instruction, do not need occupy processor resource, will not occur because
There is software in processor or hardware fault leads to not the case where normally alerting, and has high reliability.
Detailed description of the invention
Fig. 1 is the alarm device circuit structure diagram in the utility model embodiment；
In figure, R1~R7 is respectively the first to the 7th resistance, and Q1~Q4 is respectively first to fourth triode, and C1, C2 divide
It Wei not first capacitor and the second capacitor.
Specific embodiment
The utility model is directed to a kind of alarm device, and different state instructions is realized with pure hardware mode, solves to pass
It realizes that alarm needs to be participated in by processor in system technology and existing occupies processor resource and the low problem of reliability.
The embodiment of the utility model is further described with reference to the accompanying drawings and embodiments:
Embodiment:
As shown in Figure 1, the alarm device in the present embodiment, comprising:
First to the 7th resistance R1~R7, first to fourth triode Q1~Q4, first capacitor C1, the second capacitor C2, bee
Ring device and LED light；The base stage of the first triode Q1 passes through the collector of second capacitor C2 the second triode of connection Q2；The
The emitter of one triode Q1 is grounded；The base stage of the second triode Q2 passes through the first triode of first capacitor C1 connection Q1's
Collector, the emitter ground connection of the second triode Q2；The first resistor R1 and second resistance R2 are connected in first capacitor in parallel
Between the both ends of C1 and the collector of the third transistor Q3；The 3rd resistor R3 and the 4th resistance R4 is connected in parallel
Between the both ends of two capacitor C2 and the collector of the third transistor Q3；The emitter of the third transistor Q3 connects power supply
VCC, the base stage of third transistor Q3 connect the base stage of the 4th triode Q4 and pass through the 5th resistance R5 connection control point A,
The emitter connection the two or three that the collector of 4th triode Q4 passes through the 6th resistance R6 connection control point B, the 4th triode Q4
The collector of pole pipe Q2；The buzzer is connected after connecting with the 7th resistance R7 between the collector and ground of the first triode Q1；
The LED light is connected between the collector and ground of the 4th triode Q4.
The function declaration for forming each component of above-mentioned alarm device is as follows:
Using third transistor Q3, the switching function of the 4th triode Q4, when control point A input low level, the three or three
Pole pipe Q3 and the 4th triode Q4 conducting, when input high level, is then closed；
Using resistance itself current limliting principle, when electric current flows through third triode Q3 and passes through first resistor R1, second resistance
R2,3rd resistor R3 and the 4th resistance R4 realize the function of slowly being charged to first capacitor C1 and the second capacitor C2；
Utilize the first triode Q1, the switching function of the second triode Q2；Quickly to first capacitor C1 and the second capacitor C2
Electric discharge；
Using buzzer, external buzzing prompt is realized；
It externally provides that lamp is bright, and lamp goes out using LED light, flashes three kinds of states；
Using the 5th resistance R5, the 6th resistance R6, the current limliting principle of the 7th resistance R7 plays current limliting work in actual circuit
With.
The working principle of above-mentioned alarm device is:
1) when control point A is set to high level:
Third transistor Q3 and the 4th triode Q4 works in cut-off (OFF) state, and VCC cannot pass through third transistor
Q3 enters first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4 and realizes to first capacitor C1, the second capacitor
C2 charges.
Due to first capacitor C1, the second both ends capacitor C2 do not have voltage difference, so the first triode Q1, the second triode Q2
Work is in cut-off (OFF) state.
Due to first resistor R1 and the 7th resistance R7 be connected with first capacitor C1 anode contact not with buzzer negative polarity
Voltage difference is embodied, then buzzer does not work, i.e., not in alarm condition.
Since the 4th triode Q4 triode operation is in cut-off (OFF) state, then LED light cannot receive any VCC
Signal, thus be in close state.
Since Q4 is in cut-off (OFF) state, when control point B exports high level, high level signal passes through the 6th resistance
The 4th triode Q4 is not flowed through after R6, but can only flow to anode by LED cathode, realizes that LED illuminating state (often refers to system
It works normally).
If control point B is exported low level at this time, the cathode of LED light and anode both ends are without pressure difference at this time, and LED light is without electricity
Stream flows through, then LED is in OFF state (normal finger system does not work normally).
It can be seen that, by the way that control point B is set to high level, LED may be implemented when control point A is set to high level
LED light closed state may be implemented by the way that control point B is set to low level in lamp illuminating state.
2) when control point A is set to low level:
Third transistor Q3 and the 4th triode Q4 work at saturation state (ON), then VCC power supply passes through the three or three
Pole pipe Q3 enters first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4 and realizes to first capacitor C1, and second
Capacitor C2 charges.Since the Electric parameter characteristics of the first triode Q1, the second triode Q2 can not be identical, it is assumed that the
The current gain of one triode Q1 is than the second triode Q2 high, then the first triode Q1 can be introduced into saturation than the second triode Q2
(ON) state, and when the first triode Q1 saturation, ce pole of the first capacitor C1 by VCC through the first triode Q1, second resistance
R2 electric discharge forms a reverse bias in the pole be of the second triode Q2, the second triode Q2 is promoted to end.Second capacitor C2 simultaneously
The pole be through the 4th resistance R4 and the first triode Q1 charges to VCC in completion in the short time.
After the completion of first capacitor C1 electric discharge, first capacitor C1 is by VCC through second resistance R2, the pole ce of the first triode Q1
Reverse charging, when being charged to the base stage cut-in voltage of the second triode Q2, the second triode Q2 enters saturated mode (ON), the second electricity
Hold C2 and discharged by VCC by the pole ce of the second triode Q2,3rd resistor R3, equally, causes the first triode Q1 at this time
The pole be reverse blas, the first triode Q1 ends (OFF), then be of the first capacitor C1 through first resistor R1 and the second triode Q2
Pole charges to VCC in the short time.
Due to first capacitor C1, the constantly alternate charge and discharge of the second capacitor C2, the first triode Q1, the second triode Q2 is not
It is disconnected to alternately enter cut-off (OFF)/saturation (ON) state, thus realize the pole c of the first triode Q1 and the c of the second triode Q2
There is the phase difference waveform (cyclic pulse signal) of reversed 180 degree in pole:
When the first triode Q1 enters off-state (OFF), VCC is by first resistor R1 and the 7th resistance R7 using buzzing
Device anode is realized to cathode and is alarmed.
Conversely, the first triode Q1 enters saturated mode (ON), since the internal resistance of the first triode Q1 is far smaller than the 7th electricity
The resistance value of R7 is hindered, VCC flows to ground by the pole ce of first resistor R1 and the first triode Q1, is equivalent to buzzer and is shorted, then
Buzzer can not achieve alarm.
Similarly, when the second triode Q2 enters off-state (OFF), this programme sets the 4th resistance R4 resistance value less than the 6th electricity
The resistance value of R6 is hindered, and since LED internal resistance is far smaller than the resistance value of the 6th resistance R6, then regardless of control point B is in high level also
Low level, VCC can pass through the 4th resistance R4, the pole ce of the 4th triode Q4 using LED cathode and anode, thus point
Bright LED.
Conversely, VCC passes through the 4th resistance R4, the ce of the second triode Q2 when the second triode Q2 enters saturated mode (ON)
Pole flow direction ground, and since the internal resistance of the first triode Q1 is far smaller than the internal resistance of LED, so VCC is no longer pass through LED, then close
LED light.
It can be seen that no matter control point B is high level or low level, this programme when control point A is set to low level
LED light flashing and buzzing alarm prompt may be implemented.
Claims (8)
1. a kind of alarm device, which is characterized in that including the first to the 7th resistance (R1-R7), first to fourth triode (Q1-
Q4), first capacitor (C1), the second capacitor (C2), buzzer and indicator light；The base stage of first triode (Q1) passes through the
Two capacitors (C2) connect the collector of the second triode (Q2)；The emitter of first triode (Q1) is grounded；Two or three pole
Manage collector of the base stage of (Q2) by first capacitor (C1) connection the first triode (Q1), the emitter of the second triode (Q2)
Ground connection；The first resistor (R1) and second resistance (R2) are connected in the both ends and the three or three pole of first capacitor (C1) in parallel
Between the collector for managing (Q3)；The 3rd resistor (R3) and the 4th resistance (R4) are connected in the both ends of the second capacitor (C2) in parallel
Between the collector of the third transistor (Q3)；The emitter of the third transistor (Q3) connects power supply (VCC), third
The base stage of triode (Q3) connects the base stage of the 4th triode (Q4) and connects the first control point by the 5th resistance (R5),
The collector of 4th triode (Q4) connects the second control point by the 6th resistance (R6), and the emitter of the 4th triode (Q4) connects
Connect the collector of the second triode (Q2)；The buzzer connects the collection of the first triode (Q1) after connecting with the 7th resistance (R7)
Between electrode and ground；The indicator light is connected between the collector and ground of the 4th triode (Q4).
2. alarm device as described in claim 1, which is characterized in that the indicator light is LED light.
3. alarm device as described in claim 1, which is characterized in that first triode (Q1), the second triode (Q2)
For NPN type triode.
4. alarm device as claimed in claim 3, which is characterized in that the third transistor (Q3), the 4th triode (Q4)
For PNP type triode.
5. a kind of alarm device as claimed in claim 4, which is characterized in that the first capacitor (C1) and the second capacitor (C2)
Anode for polar capacitor, first capacitor (C1) is connected with the collector of the first triode (Q1), the cathode of first capacitor (C1)
It is connected with the base stage of the second triode (Q2)；The anode of second capacitor (C2) is connected with the collector of the second triode (Q2), the
The cathode of two capacitors (C2) is connected with the base stage of the first triode (Q1).
6. alarm device as described in claim 1, which is characterized in that the resistance value of the first resistor (R1) is less than second resistance
(R2) resistance value.
7. alarm device as described in claim 1, which is characterized in that the resistance value of the 3rd resistor (R3) is less than the 4th resistance
(R4) resistance value.
8. alarm device as described in claim 1, which is characterized in that the resistance value of the 4th resistance (R4) is less than the 6th resistance
(R6) resistance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821022559.4U CN208284084U (en) | 2018-06-29 | 2018-06-29 | A kind of alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821022559.4U CN208284084U (en) | 2018-06-29 | 2018-06-29 | A kind of alarm device |
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| Publication Number | Publication Date |
|---|---|
| CN208284084U true CN208284084U (en) | 2018-12-25 |
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ID=64704844
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821022559.4U Active CN208284084U (en) | 2018-06-29 | 2018-06-29 | A kind of alarm device |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412376A (en) * | 2019-07-29 | 2019-11-05 | 云南晨鸣电器有限公司 | A kind of energy-efficient electrical power distribution switches cabinet of convenient environment friendly |
-
2018
- 2018-06-29 CN CN201821022559.4U patent/CN208284084U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412376A (en) * | 2019-07-29 | 2019-11-05 | 云南晨鸣电器有限公司 | A kind of energy-efficient electrical power distribution switches cabinet of convenient environment friendly |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 610041 nine Xing Xing Road 16, hi tech Zone, Sichuan, Chengdu Patentee after: MAIPU COMMUNICATION TECHNOLOGY Co.,Ltd. Address before: 610041, 17 floor, maple building, 1 building, 288 Tianfu street, Chengdu, Sichuan. Patentee before: MAIPU COMMUNICATION TECHNOLOGY Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |