CN208805537U - A kind of warning circuit and monitoring device - Google Patents
A kind of warning circuit and monitoring device Download PDFInfo
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- CN208805537U CN208805537U CN201821478221.XU CN201821478221U CN208805537U CN 208805537 U CN208805537 U CN 208805537U CN 201821478221 U CN201821478221 U CN 201821478221U CN 208805537 U CN208805537 U CN 208805537U
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Abstract
The utility model provides a kind of warning circuit and monitoring device, is related to monitoring equipment field.Warning circuit includes detection unit, input unit and connection unit, and connection unit one end is connect with a power supply, and other end ground connection, input unit and connection unit are electrically connected to a test point, and detection unit is electrically connected with test point；Input unit is for receiving fault message, wherein when input unit receives fault message, the voltage value at input unit both ends changes to change the voltage value of test point；Detection unit is used to detect the voltage value of test point, and voltage value is sent to a control unit, so that control unit triggers warning information.In the present invention, the survivability of failure input function can be improved to detect whether failure information by detecting the voltage value of test point.
Description
Technical field
The utility model relates to monitoring equipment fields, in particular to a kind of warning circuit and monitoring device.
Background technique
In monitoring device, alarm input function is a relatively conventional basic function.General 1 group of alarm input is by 1
Root alarm line and 1 ground wire are constituted, and there are 2 kinds of alarm input modes.Mode 1 is switching value, alarm line and ground wire short circuit/disconnection
2 kinds of states as internal identification；Mode 2 is level amount, and 2 kinds of states that 5V and 0V level is added on alarm line are known as internal
Not.This simple alarm input realizes that survivability is lower.
Utility model content
The purpose of this utility model is to provide a kind of warning circuits, can be improved the collapse resistance energy of failure input function
Power.
The purpose of this utility model is to provide a kind of monitoring devices, can be improved the collapse resistance energy of failure input function
Power.
The utility model provides a kind of technical solution:
A kind of warning circuit, comprising: detection unit, input unit and connection unit, described connection unit one end and an electricity
Source connection, other end ground connection, the input unit and the connection unit are electrically connected to a test point, the detection unit and institute
State test point electrical connection；
The input unit is for receiving fault message, wherein when the input unit receives the fault message,
The voltage value at the input unit both ends changes to change the voltage value of the test point；
The detection unit is used to detect the voltage value of the test point, and the voltage value is sent to a control list
Member, so that described control unit triggers warning information.
Further, in the utility model preferred embodiment, the connection unit includes first resistor and the second electricity
Resistance, the first resistor and the second resistance are series between the power supply and ground, and the test point is formed in described first
Between resistance and the second resistance.
Further, in the utility model preferred embodiment, the input unit includes input switch and third electricity
Resistance, the input switch and the 3rd resistor are series between the test point and ground.
Further, in the utility model preferred embodiment, when the input switch disconnects, the detection unit
The first preset value is detected in the test point, and described control unit triggers the first alarm signal.
Further, in the utility model preferred embodiment, when the input switch and the 3rd resistor are short
When connecing, the detection unit detects the second preset value in the test point, and described control unit triggers the second alarm signal.
A kind of monitoring device, including warning circuit and control unit, the warning circuit include detection unit, input unit
And connection unit, described connection unit one end are connect with a power supply, other end ground connection, the input unit and the connection unit
It is electrically connected to a test point, the detection unit is electrically connected with the test point；
The input unit is for receiving fault message, wherein when the input unit receives the fault message,
The voltage value at the input unit both ends changes to change the voltage value of the test point；
The detection unit is used to detect the voltage value of the test point, and the voltage value is sent to the control list
Member；
Described control unit is used for foundation and receives the voltage value triggering warning information.
Further, in the utility model preferred embodiment, the connection unit includes first resistor and the second electricity
Resistance, the first resistor and the second resistance are series between the power supply and ground, and the test point is formed in described first
Between resistance and the second resistance.
Further, in the utility model preferred embodiment, the input unit includes input switch and third electricity
Resistance, the input switch and the 3rd resistor are series between the test point and ground.
Further, in the utility model preferred embodiment, when the input switch disconnects, the input unit
The first preset value is detected in the test point, and described control unit is for triggering the first alarm signal.
Further, in the utility model preferred embodiment, when the input switch and the 3rd resistor are short
When connecing, the input unit detects the second preset value in the test point, and described control unit is for triggering the second alarm letter
Number.
The beneficial effect of warning circuit provided by the utility model and monitoring device is: warning circuit include detection unit,
Input unit and connection unit, connection unit one end are connect with a power supply, and other end ground connection, input unit is electrically connected with connection unit
It is connected to a test point, detection unit is electrically connected with test point；Input unit is for receiving fault message, wherein works as input unit
When receiving fault message, the voltage value at input unit both ends changes to change the voltage value of test point；Detection unit is used
In the voltage value of detection test point, and voltage value is sent to a control unit, so that control unit triggers warning information.
In the present invention, after input unit receives fault message, the voltage value at input unit both ends can occur
Variation, changes so as to cause the voltage value of test point, and detection unit detects the voltage value of test point, and will change voltage value hair
Control unit is given, control unit is made to trigger warning information.In the present invention, the voltage value of detection test point can be passed through
Variation, to detect whether failure information, improves the survivability of failure input function.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the composition block diagram for the warning circuit that the utility model embodiment one provides.
Fig. 2 is the composition block diagram of the utility model embodiment one warning circuit provided and control unit.
Fig. 3 is the circuit diagram for the warning circuit that the utility model embodiment one provides.
Fig. 4 is the composition block diagram for the monitoring device that the utility model embodiment two provides.
Icon: 10- monitoring device；100- warning circuit；110- detection unit；120- input unit；122- input switch；
130- connection unit；200- control unit.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be understood that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or
The utility model product using when the orientation or positional relationship usually put or those skilled in the art usually understand
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified sets
Standby or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, it is not understood to indicate or imply
Relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
Embodiment one
Referring to Fig. 1, present embodiments providing a kind of warning circuit 100, warning circuit 100 provided in this embodiment can
Improve the survivability of failure input function.
Whether warning circuit 100 provided in this embodiment is mainly for detection of breaking down, when there is emergency alarm, meeting
Trigger warning information.
Alarm input mode in the prior art is for switch one resistance of series connection and with alarm input and systematically
Form alarm circuit.It when there is warning information, closes the switch, alerts and generate alarm electric current in circuit, receive alarm input
Electric current is alerted, to issue alarm signal.However thering is criminal to be directly shorted resistance and switch, make to accuse when closing the switch
Alert input can not detect alarm electric current, to can not identify whether warning information.
Under normal conditions, switch is together with circuit integration, and is generally arranged at interior, passes through very long transmission line and alarm
Input connection.It destroys intelligence to destroy on the route of nobody's management, therefore, is directly shorted resistance and switch.
Please refer to Fig. 1 and Fig. 2, in the present embodiment, warning circuit 100 include detection unit 110, input unit 120 and
Connection unit 130,130 one end of connection unit are connect with a power supply VCC, other end ground connection, input unit 120 and connection unit
130 are electrically connected to a test point, and detection unit 110 is electrically connected with test point；
Input unit 120 is for receiving fault message, wherein when input unit 120 receives fault message, input is single
The voltage value at first 120 both ends changes to change the voltage value of test point；
Detection unit 110 is used to detect the voltage value of test point, and voltage value is sent to a control unit 200, so that
Control unit 200 triggers warning information.
In the present embodiment, after input unit 120 receives fault message, the voltage value meeting at 120 both ends of input unit
It changes, changes so as to cause the voltage value of test point, detection unit 110 detects the voltage value of test point, and will change
Voltage value is sent to control unit 200, and control unit 200 is made to trigger warning information.In the present embodiment, it can be detected by detection
The variation of the voltage value of point improves the survivability of failure input function to detect whether failure information.
Referring to Fig. 3, in the present embodiment, connection unit 130 includes first resistor R1 and second resistance R2, first resistor
R1 and second resistance R2 are series between power supply VCC and ground, and test point is formed between first resistor R1 and second resistance R2.
In the present embodiment, second resistance R2 connects with after 120 parallel connection of input unit with first resistor R1, input unit
After 120 receive fault message, the voltage value at 120 both ends of input unit can change, so that the voltage value of test point be made to send out
Changing.
In the present embodiment, input unit 120 includes input switch 122 and 3rd resistor R3, input switch 122 and third
Resistance R3 is series between test point and ground.
In the present embodiment, after input switch 122 and 3rd resistor R3 are in parallel with second resistance R2 again with first resistor R1
Series connection when the disconnection of input switch 122 or is closed, the voltage of test point can be made to change.
In the present embodiment, make specifically so that first resistor R1 is equal to second resistance R2 equal to 3rd resistor R3 as an example
It is bright.
When input switch 122 disconnects, there is open circuit in 3rd resistor R3, and the voltage at test point is equal to the electricity of power supply VCC
The half of pressure value after second resistance R2 is in parallel with 3rd resistor R3, is connected when input switch 122 is closed with first resistor R1,
The voltage of test point is the one third of the voltage of power supply VCC.After input switch 122 and 3rd resistor R3 are shorted, detection
Point ground connection, makes the voltage zero at test point.
In the present embodiment, when input switch 122 disconnects, indicate that equipment breaks down.When input switch 122 and third
Resistance R3 is shorted, and is indicated that warning circuit 100 is destroyed, is broken down.
In the present embodiment, when input switch 122 disconnects, detection unit 110 detects the first preset value in test point,
Control unit 200 is for triggering the first alarm signal.
In the present embodiment, when indicating that equipment breaks down, input switch 122 is disconnected, and detection unit 110 is in test point
The voltage value detected is the half of the voltage of power supply VCC.First preset value is half power supply VCC voltage.Control unit
200 issue the first alarm signal according to the first preset value again, and user is reminded equipment failure occur.
In the present embodiment, input switch 122 is disconnected, can be artificially by lower button, disconnect input switch 122, also
It can be after receiving fault message, triggering input switch 122 disconnects.
In the present embodiment, when input switch 122 and 3rd resistor R3 are shorted, detection unit 110 is examined in test point
The second preset value is measured, control unit 200 is for triggering the second alarm signal.
In the present embodiment, when warning circuit 100 is destroyed, input switch 122 and 3rd resistor R3 are shorted, detection
Point ground connection, detection unit 110 is zero in the voltage value that test point detects.Second preset value is zero.The foundation again of control unit 200
Second preset value triggers the second alarm signal, reminds user's warning circuit 100 by artificial destruction.
The working principle of warning circuit 100 provided in this embodiment: in the present embodiment, input switch 122 and third electricity
Resistance R3 is series between test point and ground, between first resistor R1 and second resistance R2 series connection and power supply VCC and ground, when expression is set
When standby failure, input switch 122 is disconnected, the electricity that detection unit 110 is power supply VCC in the voltage value that test point detects
The half of pressure.First preset value is half power supply VCC voltage.Control unit 200 issues first according to the first preset value again
Alarm signal reminds user equipment to break down.When warning circuit 100 is destroyed, input switch 122 and 3rd resistor R3 quilt
It is shorted, test point ground connection, detection unit 110 is zero in the voltage value that test point detects.Second preset value is zero.Control unit
200 trigger the second alarm signal according to the second preset value again, remind user's warning circuit 100 by artificial destruction.
In conclusion warning circuit 100 provided in this embodiment, in the present embodiment, when equipment works normally, detection
Unit 110 is in the one third that the voltage value that test point detects is power supply VCC voltage, and when equipment breaks down, detection is single
Member 110 is in the half that the voltage value that test point detects is power supply VCC voltage, when warning circuit 100 is destroyed, detection
Unit 110 is zero in the voltage value that test point detects.In the present embodiment, when warning circuit 100 is destroyed, equally can
It identifies failure, enhances the alarm function of warning circuit 100.
Embodiment two
Referring to Fig. 4, present embodiments providing a kind of monitoring device 10, monitoring device 10 provided in this embodiment can be mentioned
The survivability of high failure input function.
In order to briefly describe, the present embodiment does not refer to place, can refer to embodiment one.
In the present embodiment, monitoring device 10 includes the warning circuit 100 that control unit 200 and embodiment one provide, control
Unit 200 processed is connect with detection unit 110.
In the present embodiment, when input switch 122 disconnects, input unit 120 detects the first preset value in test point,
Control unit 200 triggers the first alarm signal.
In the present embodiment, it can be control unit 200 and issue the first alarm signal, be also possible to the control of control unit 200
It makes other modules and issues the first alarm signal.
In the present embodiment, the first alarm signal can be acoustical signal, be also possible to optical signal.
Summarize in the present embodiment, when input switch 122 and 3rd resistor R3 are shorted, input unit 120 is in test point
Detect the second preset value, control unit 200 triggers the second alarm signal.
In the present embodiment, it can be control unit 200 and issue the second alarm signal, be also possible to the control of control unit 200
It makes other modules and issues the second alarm signal.
In the present embodiment, the second alarm signal can be acoustical signal, be also possible to optical signal.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of warning circuit characterized by comprising detection unit, input unit and connection unit, the connection unit one
End is connect with a power supply, and other end ground connection, the input unit and the connection unit are electrically connected to a test point, the detection
Unit is electrically connected with the test point；
The input unit is for receiving fault message, wherein described when the input unit receives the fault message
The voltage value at input unit both ends changes to change the voltage value of the test point；
The detection unit is used to detect the voltage value of the test point, and the voltage value is sent to a control unit, with
Described control unit is set to trigger warning information.
2. warning circuit according to claim 1, which is characterized in that the connection unit includes first resistor and the second electricity
Resistance, the first resistor and the second resistance are series between the power supply and ground, and the test point is formed in described first
Between resistance and the second resistance.
3. warning circuit according to claim 1, which is characterized in that the input unit includes input switch and third electricity
Resistance, the input switch and the 3rd resistor are series between the test point and ground.
4. warning circuit according to claim 3, which is characterized in that when the input switch disconnects, the detection is single
Member detects the first preset value in the test point, and described control unit is for triggering the first alarm signal.
5. warning circuit according to claim 3, which is characterized in that when the input switch and the 3rd resistor are short
When connecing, the detection unit detects the second preset value in the test point, and described control unit is for triggering the second alarm letter
Number.
6. a kind of monitoring device, which is characterized in that including warning circuit and control unit, the warning circuit includes that detection is single
Member, input unit and connection unit, described connection unit one end connects with a power supply, and the other end is grounded, the input unit and
The connection unit is electrically connected to a test point, and the detection unit is electrically connected with the test point；
The input unit is for receiving fault message, wherein described when the input unit receives the fault message
The voltage value at input unit both ends changes to change the voltage value of the test point；
The detection unit is used to detect the voltage value of the test point, and the voltage value is sent to described control unit；
Described control unit is used for foundation and receives the voltage value triggering warning information.
7. monitoring device according to claim 6, which is characterized in that the connection unit includes first resistor and the second electricity
Resistance, the first resistor and the second resistance are series between the power supply and ground, and the test point is formed in described first
Between resistance and the second resistance.
8. monitoring device according to claim 6, which is characterized in that the input unit includes input switch and third electricity
Resistance, the input switch and the 3rd resistor are series between the test point and ground.
9. monitoring device according to claim 8, which is characterized in that when the input switch disconnects, the detection is single
Member detects the first preset value in the test point, and described control unit triggers the first alarm signal.
10. monitoring device according to claim 8, which is characterized in that when the input switch and the 3rd resistor quilt
When short circuit, the detection unit detects the second preset value in the test point, and described control unit triggers the second alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821478221.XU CN208805537U (en) | 2018-09-10 | 2018-09-10 | A kind of warning circuit and monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821478221.XU CN208805537U (en) | 2018-09-10 | 2018-09-10 | A kind of warning circuit and monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208805537U true CN208805537U (en) | 2019-04-30 |
Family
ID=66237883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821478221.XU Active CN208805537U (en) | 2018-09-10 | 2018-09-10 | A kind of warning circuit and monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208805537U (en) |
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2018
- 2018-09-10 CN CN201821478221.XU patent/CN208805537U/en active Active
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