CN209640435U - A kind of detection circuit and detecting tool - Google Patents
A kind of detection circuit and detecting tool Download PDFInfo
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- CN209640435U CN209640435U CN201822169739.1U CN201822169739U CN209640435U CN 209640435 U CN209640435 U CN 209640435U CN 201822169739 U CN201822169739 U CN 201822169739U CN 209640435 U CN209640435 U CN 209640435U
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Abstract
It includes first terminal, Second terminal, first diode, the second diode, first resistor, second resistance, first capacitor, the first voltage-stabiliser tube, the first light emitting diode and the second light emitting diode that the embodiment of the present application, which provides a kind of detection circuit and detecting tool, the detection circuit,.The detection circuit can determine whether the wiring of air-conditioner controller is correct by the different working condition of the first light emitting diode and the second light emitting diode.
Description
Technical field
This application involves circuit detection technique fields, and in particular to a kind of detection electricity for detecting air-conditioner controller wiring
Road and detecting tool.
Background technique
Electrical equipment frequently includes terminals, and under normal circumstances, the voltage of terminals can be in a certain range.For having
For the electrical equipment of multiple connecting terminals, the voltage range of each terminals may not be identical.For example, air-conditioning is as common electricity
Device is widely used in the every aspect of life.The interior machine of air-conditioning and the communication scheme of outer machine are frequently with zero Fire Wire communication circuit (string
Row half-duplex current ring communication loop), firewire/zero curve/communication line (L/ is generally comprised on the controller of air-conditioning internal machine or outer machine
N/S) three terminals.
Utility model content
In view of this, the embodiment of the present application provides a kind of detection circuit and detection device, it is able to detect the wiring of air-conditioning
It is whether correct.
To achieve the goals above, this application provides following technical characteristics:
A kind of detection circuit, including first terminal, Second terminal, first diode, the second diode, first resistor,
Two resistance, first capacitor, the first voltage-stabiliser tube, the first light emitting diode and the second light emitting diode；
The anode of first light emitting diode is connected to the first terminal, and the cathode of first light emitting diode connects
It is connected to the anode of second diode, the cathode of second diode is connected to the Second terminal；
The anode of the first diode is connected to the first terminal, and the cathode of the first diode is connected to described
The first end of first resistor, the second end of the first resistor are connected to the cathode of first voltage-stabiliser tube, first pressure stabilizing
The anode of pipe is connected to the anode of second light emitting diode, and the cathode of second light emitting diode is connected to described second
The anode of diode；
After the first capacitor and second resistance are in parallel, be connected to first voltage-stabiliser tube cathode and the two or two pole
Between the anode of pipe.
Optionally, the detection circuit further includes the second capacitor, and the first end of second capacitor is connected to described first
Terminal, the second capacitor second end are connected to the anode of second diode.
Optionally, the detection circuit further includes the 4th resistance, and the cathode of first light emitting diode passes through described the
Four resistance are connected to the anode of second diode or the first terminal by the 4th resistance is connected to described
The anode of one light emitting diode.
Optionally, the detection circuit further includes 3rd resistor, and the anode of first voltage-stabiliser tube passes through the third electricity
Resistance is connected to the anode of second light emitting diode.
Optionally, the pressure stabilizing value of first zener diode is greater than the first voltage value；When the first voltage value applies
When between the first terminal and the Second terminal, illuminating state, second hair is presented in first light emitting diode
OFF state is presented in optical diode.
A kind of detecting tool, including above-mentioned detection circuit.
Optionally, whether the zero curve, firewire and communication line that the detecting tool is used to detect air-conditioner controller connect correctly.
Optionally, the air-conditioner controller is communicated using serial half-duplex current ring, and the air-conditioner controller includes communication
Power supply unit
Based on the above-mentioned technical proposal, a kind of detection circuit provided by the utility model, including first terminal, Second terminal,
First diode, the second diode, first resistor, second resistance, first capacitor, the first voltage-stabiliser tube, the first light emitting diode and
Second light emitting diode；The anode of first light emitting diode is connected to the first terminal, first light emitting diode
Cathode be connected to the anode of second diode, the cathode of second diode is connected to the Second terminal；It is described
The anode of first diode is connected to the first terminal, and the cathode of the first diode is connected to the of the first resistor
One end, the second end of the first resistor are connected to the cathode of first voltage-stabiliser tube, the anode connection of first voltage-stabiliser tube
Cathode to the anode of second light emitting diode, the second light emitting diode connection is connected to second diode
Anode；After the first capacitor and second resistance are in parallel, it is connected to the cathode and second diode of first voltage-stabiliser tube
Anode between.When inputting different voltages between first terminal and Second terminal, the first light emitting diode and second luminous two
Different working condition is presented in pole pipe；Connecting terminal electricity when terminal voltage and air conditioning wiring mistake when air conditioning wiring is correct
Pressure is different, therefore is capable of detecting when whether air conditioning wiring is correct using detection circuit provided by the utility model.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of electrical block diagram of detection circuit disclosed in one embodiment of the application；
Fig. 2 is a kind of electrical block diagram of detection circuit disclosed in another embodiment of the application；
Fig. 3 is a kind of electrical block diagram of the serial half-duplex current ring communication loop of air-conditioner controller.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, the embodiment of the present application provides a kind of detection circuit, which includes first terminal CN1,
Two-terminal CN2, first diode D1, the second diode D2, first resistor R1, second resistance R2, first capacitor C1, the first pressure stabilizing
Pipe ZD1, the first Light-emitting diode LED 1 and the second Light-emitting diode LED 2；
The anode of first Light-emitting diode LED 1 is connected to first terminal CN1, and the cathode of the first Light-emitting diode LED 1 connects
It is connected to the anode of the second diode D2, the cathode of the second diode D2 is connected to Second terminal CN2；
The anode of first diode D1 is connected to first terminal CN1, and the cathode of first diode D1 is connected to first resistor
The first end of R1, the second end of first resistor R1 are connected to the cathode of the first voltage-stabiliser tube ZD1, and the anode of the first voltage-stabiliser tube ZD1 connects
It is connected to the anode of the second Light-emitting diode LED 2, the cathode of the second Light-emitting diode LED 2 is connected to the sun of the second diode D2
Pole；
After first capacitor C1 and second resistance R2 are in parallel, it is connected to the cathode and the second diode D2 of the first voltage-stabiliser tube ZD1
Anode between.
In the present embodiment, when applying voltage between first terminal CN1 and Second terminal CN2, LED1 is lighted；And LED2
Working condition (light or extinguish) determines by the voltage value Vin and ZD1 applied between first terminal CN1 and Second terminal CN2,
When Vin is greater than the pressure stabilizing value of ZD1, there is electric current to flow through by the access that ZD1 and LED2 are formed, LED2 is lighted；When Vin is less than ZD1
Pressure stabilizing value when, there is no electric current to flow through by the access that ZD1 and LED2 are formed, LED2 extinguish.First terminal CN1 and Second terminal
The voltage value applied between CN2 is different, LED1 with LED2 working condition is different；It is empty when air-conditioner controller wiring is correct and wrong
Adjust the voltage between controller connecting terminal different, when air-conditioner controller connecting terminal, which is linked into CN1 and CN2, to be detected,
The voltage accessed between CN1 and CN2 is also just different；Therefore, LED1 and LED2 different working conditions correspond to different CN1 and
Voltage value between CN2, and then can judge whether the wiring of air-conditioner controller is correct by the working condition of LED1 and LED2.
In one embodiment, further, as shown in Fig. 2, detection circuit further includes the 4th resistance R4, first shines two
The cathode of pole pipe LED1 is by the 4th resistance R4 anode for being connected to the second diode D2 or first terminal CN1 by the 4th
Resistance R4 is connected to the anode of the first Light-emitting diode LED 1.
Further, as shown in Fig. 2, detection circuit further includes 3rd resistor R3, the anode of the first voltage-stabiliser tube ZD1 passes through the
Three resistance R3 are connected to the anode of the second Light-emitting diode LED 2.
In the above-described embodiments, the pressure stabilizing value that the first zener diode is arranged is greater than the first voltage value；Work as the first voltage value
When being applied between first terminal CN1 and Second terminal CN2, illuminating state is presented in the first Light-emitting diode LED 1, and second shines
OFF state is presented in diode (LED) 2.Specifically, terminals when the first voltage value can correspond to air-conditioner controller correct wiring
The voltage of son.In a specific embodiment, as shown in figure 3, the wiring of air-conditioner controller includes zero curve, firewire and communication
Line, air-conditioner controller are communicated using serial half-duplex current ring, and in the present embodiment, it is airconditioning control that the first voltage value, which can be set,
When the normal wiring of device, the voltage between zero curve and communication line.As shown in figure 3, the outdoor communicated using serial half-duplex current ring
The working principle of the communication loop of controller and indoor controller is as follows:
1) communication voltage takes electricity at the negative half-wave of interior machine input AC220V power supply L line, i.e. and N → R203//ZD201//
C201//E201 → R202 → R201 → D201 → L forming circuit, R203, ZD201, C201, E201, R202, R201 and D201
Power communications unit is formed, the negative value size that power communications unit takes out determines that (example: when selecting 24V, communication is electric by ZD1
Pressure is -24V), and be powered using this voltage as communication unit.
2) it (is combined by the driving of optocoupler PC4, PC1) after the conducting of indoor and outdoor communication loop, communication voltage is by N → PC3
→ PC4 → R207 → D204 → S → S → D203 → R205 → PC2 → PC1 → (- 24V) → R202 → R201 → D201 → L shape
At loop, the voltage (i.e. voltage on S line) between S-N is divided by the p- 24V of R207 and R205 to be formed, and is typically designed R205=R207
When, then S line forms the PWM voltage waveform of 0V/-12V/-24V variation in communication.
3) when " indoor → outdoor " communication, ON is connected PC4 always, and PC1 sends pwm signal, then communication voltage is on S line
The PWM voltage waveform of 0V/-12V variation；When " outdoor → indoor " communication, ON is connected PC1 always, and PC4 sends pwm signal, then
Communication voltage is the PWM voltage waveform of -12V/-24V variation on S line；It is outdoor i.e. regardless of indoor signalling or outdoor signalling
Voltage difference on plate between N-S is maintained at 12V.
In the embodiment shown in fig. 3, the first voltage value can be set to 12V, and the pressure stabilizing value of ZD1 is greater than 12V.
It should be noted that Fig. 3 is that controller takes electricity to power communications unit indoors, inspection provided by the present application can use
Whether the wiring (zero curve/firewire/communication line) that slowdown monitoring circuit detects indoor controller is correct；If power communications unit is in outdoor control
Device takes electricity, i.e. power communications unit is located outside controller, can use and controls outside detection circuit sensing chamber provided by the present application
Whether the wiring (zero curve/firewire/communication line) of device is correct.
In the present embodiment, 3 terminals (zero/fire/communication line) of indoor controller and the end detection circuit CN1 and CN2 are total
There is 6 connections (such as table one: correct a kind, 5 kinds of mistake), the corresponding CN1 of every kind of connection is different from the input voltage vin of CN2,
The working condition that LED1 and LED2 is presented is also different；
| No. | Connection | CN1 | CN2 | Vin/V | LED1 | LED2 |
| 1 | Correctly | N | S | 12 | It is bright | It goes out |
| 2 | Mistake 1 | L | S | 110 | It is bright | It is bright |
| 3 | Mistake 2 | S | N | 0 | It goes out | It goes out |
| 4 | Mistake 3 | S | L | 0 | It goes out | It goes out |
| 5 | Mistake 4 | L | N | 220 | It is bright | It is bright |
| 6 | Mistake 5 | N | L | 220 | It is bright | It is bright |
Table one
The zero curve of indoor controller and communication line are respectively connected to the end CN1 and CN2 of detection circuit, work as indoor controller
Zero/fire/communication line wiring it is correct when, indicate the actual zero curve of indoor controller and communication line be connected respectively to CN1 and
CN2, Vin=12V do not have electric current to flow through, LED2 is put out because the pressure stabilizing value of ZD1 is greater than 12V by the access that ZD1 and LED2 are formed
It goes out, and LED1 is lighted under the driving of Vin.
If when indoor controller wrong line, there are 5 kinds of modes of connection for detection circuit (CN1, CN2)；Detection electricity shown in Fig. 2
The working principle on road is as follows:
1) circuit is constituted: design has two groups of circuits between CN1/CN2；Circuit be 1. " CN1 → LED1 → R4 → D2 →
CN2 ", the circuit carry out the driving and display of LED1；2. circuit is " CN1 → D1 → R1 → ZD1//C1//R2 → D2 → CN2 ",
Carry out the voltage Uo that partial pressure pressure stabilizing obtains the both ends C1；Circuit be 3. be added in the circuit ZD1 one group " driving circuit of LED2 lamp,
Be made of R3/LED2 " carry out LED2 driving and display.It is formed under the pressure stabilizing of ZD1 and C1 electrolysis smoothing effect stable defeated
Voltage Uo out.
2) principle of work and power: the voltage between CN1/CN2 be under the different modes of connection it is different, in table one: working as wiring
When " correct ", that is, interface 1 (N)/interface 2 (S) between voltage be U1, partial pressure pressure stabilizing obtain the both ends C1 voltage be Uo1；Work as wiring
When " mistake 1 ", that is, interface 1 (L)/interface 2 (S) between voltage be U2, partial pressure pressure stabilizing obtain the both ends C1 voltage be Uo2；In conjunction with figure
Voltage U2 > U1 and Uo2 > Uo1 known to 3 circuits, according to the difference of Uo2, Uo1 voltage value, design adjusts the value of ZD1/R5, so that
Uo2>Uo>Uo1；
Uo > Uo1 when the mode of connection is " correct ", no electric current flow through ZD1/R3, so that LED2 is not turned on lamp and go out, return simultaneously
1. bright light is connected in LED1 under U1 voltage on road；
Uo2 > Uo when the mode of connection is " mistake 1 ", has electric current to flow through ZD1/R3, makes LED2 that bright light, coincidence circuit be connected
1. bright light is connected in LED1 under U2 voltage；
Based on same principle analysis, " 4/ mistake 5 of mistake " mode of connection in table one all makes LED2 conducting, and lamp is bright, LED1
Bright light is connected；" 2/ mistake 3 of mistake " mode of connection in table one all makes LED2 and LED1 be not turned on lamp to go out.
Therefore, in 6 kinds of modes of connection, only under " correct " mode of connection, LED1 bright light, LED2 lamp can just be made to go out；Other
Under " mistake " mode of connection, LED1, LED2 can only all be made bright light or LED1, LED2 while to turn off the light simultaneously.It accordingly can be accurate
Judge whether connecting line L/N/S is reversed.
Further, as shown in Fig. 2, detection circuit can also connect including the first end of the second capacitor C2, the second capacitor C2
It is connected to first terminal CN1, the second end of the second capacitor C2 is connected to the anode of the second diode D2.When indoor and outdoor controller into
When row communication, indoor unit driving makes to cause the unstable of measure loop datum mark when S line signal ON/OFF, and C1 can be to S line benchmark
The instantaneous abrupt change of point plays stabilization.
Zero Fire Wire communication connecting line of measurement circuit design provided by the embodiments of the present application hardware type is reversely connected measure loop,
This circuit is not using FG (the earth) as datum mark, but the point on the basis of CN2 (i.e. communication S line)；And it does not need using MCU software
Design program and carry out signal detection and processing, also do not need design MCU chip periphery circuit, with fairly simple hardware-in-the-loop and
Lower design cost realizes the detection whether correct function of air conditioning wiring.
Based on above-mentioned detection circuit, the embodiment of the present application also discloses a kind of detecting tool, which includes above-mentioned
Detection circuit in any embodiment.The detecting tool can be used for detecting the zero curve, firewire and communication line of air-conditioner controller
Whether connect correct.Serial half-duplex current ring communication can be used in air-conditioner controller, and detected air-conditioner controller includes communication
Power supply unit.In air conditioner production process or when end user location is installed, there can be zero/fire/communication line (L/N/S) and connect
The case where being reversely connected wrong line is able to detect whether zero/fire/communication line reversed or wrong by detecting tool provided by the present application,
To prevent zero firewire (L/N/S) reversed or wrong.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment is identical to like partially may refer to each other between each embodiment.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (8)
1. a kind of detection circuit, which is characterized in that including first terminal, Second terminal, first diode, the second diode,
One resistance, second resistance, first capacitor, the first voltage-stabiliser tube, the first light emitting diode and the second light emitting diode；
The anode of first light emitting diode is connected to the first terminal, and the cathode of first light emitting diode is connected to
The cathode of the anode of second diode, second diode is connected to the Second terminal；
The anode of the first diode is connected to the first terminal, and the cathode of the first diode is connected to described first
The first end of resistance, the second end of the first resistor are connected to the cathode of first voltage-stabiliser tube, first voltage-stabiliser tube
Anode is connected to the anode of second light emitting diode, and the cathode of second light emitting diode is connected to the two or two pole
The anode of pipe；
After the first capacitor and second resistance are in parallel, it is connected to the cathode and second diode of first voltage-stabiliser tube
Between anode.
2. detection circuit according to claim 1, which is characterized in that the detection circuit further includes the second capacitor, described
The first end of second capacitor is connected to the first terminal, and the second end of second capacitor is connected to second diode
Anode.
3. detection circuit according to claim 1, which is characterized in that the detection circuit further includes the 4th resistance, described
The cathode of first light emitting diode by the 4th resistance be connected to second diode anode or the first end
Son is connected to the anode of first light emitting diode by the 4th resistance.
4. detection circuit according to claim 1, which is characterized in that the detection circuit further includes 3rd resistor, described
The anode of first voltage-stabiliser tube is connected to the anode of second light emitting diode by the 3rd resistor.
5. detection circuit according to claim 1-4, which is characterized in that the pressure stabilizing value of first voltage-stabiliser tube is big
In the first voltage value；When the first voltage value is applied between the first terminal and the Second terminal, described first
Illuminating state is presented in light emitting diode, and OFF state is presented in second light emitting diode.
6. a kind of detecting tool, which is characterized in that including detection circuit as described in any one in claim 1-5.
7. detecting tool according to claim 6, which is characterized in that for detect the zero curve of air-conditioner controller, firewire and
Whether wiring is correct for communication line.
8. detecting tool according to claim 7, which is characterized in that the air-conditioner controller uses serial half-duplex current
Ring communication, the air-conditioner controller includes power communications unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822169739.1U CN209640435U (en) | 2018-12-24 | 2018-12-24 | A kind of detection circuit and detecting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822169739.1U CN209640435U (en) | 2018-12-24 | 2018-12-24 | A kind of detection circuit and detecting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209640435U true CN209640435U (en) | 2019-11-15 |
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ID=68475206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822169739.1U Active CN209640435U (en) | 2018-12-24 | 2018-12-24 | A kind of detection circuit and detecting tool |
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| CN (1) | CN209640435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859267A (en) * | 2022-07-06 | 2022-08-05 | 广东科伺智能科技有限公司 | Circuit on-off detection circuit |
-
2018
- 2018-12-24 CN CN201822169739.1U patent/CN209640435U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859267A (en) * | 2022-07-06 | 2022-08-05 | 广东科伺智能科技有限公司 | Circuit on-off detection circuit |
| CN114859267B (en) * | 2022-07-06 | 2022-10-28 | 广东科伺智能科技有限公司 | Circuit on-off detection circuit |
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