CN217717961U - Fault detection circuit for industrial air conditioner - Google Patents
Fault detection circuit for industrial air conditioner Download PDFInfo
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- CN217717961U CN217717961U CN202221745582.2U CN202221745582U CN217717961U CN 217717961 U CN217717961 U CN 217717961U CN 202221745582 U CN202221745582 U CN 202221745582U CN 217717961 U CN217717961 U CN 217717961U
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000013024 troubleshooting Methods 0.000 abstract description 7
- 238000011835 investigation Methods 0.000 abstract 1
- 238000005070 sampling Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model relates to an industry air conditioner circuit technical field, the technical problem of artifical investigation inefficiency when solving the communication problem, the utility model provides a fault detection circuit for industrial air conditioner, including setting up the current detection resistance on the antenna power supply line, the one end of detecting the current resistance is passed through resistance R18 and is connected with triode Q8's projecting pole, the other end of detecting the current resistance passes through resistance R20 and is connected with triode Q7's projecting pole, triode Q8's collecting electrode passes through resistance R15 ground connection, triode Q7's collecting electrode passes through resistance R14 ground connection, triode Q8's base is connected with triode Q7's base, triode Q7's base is connected with its collecting electrode, triode Q8's collecting electrode passes through resistance R16 and is connected with the singlechip, triode Q7 and triode Q8 are PNP type triode. When the antenna breaks down, the fault can be detected, the fault reason is clear, and the problem of low manual troubleshooting efficiency is avoided. Meanwhile, the fault detection circuit is easy to realize and low in cost.
Description
Technical Field
The utility model relates to an industry air conditioner circuit technical field, concretely relates to fault detection circuit for industry air conditioner.
Background
In order to facilitate remote management of the industrial air conditioner, the industrial air conditioner is networked, a communication module is arranged on the industrial air conditioner, for example, a 4G wireless communication module is arranged, a GPS positioning module is arranged, an antenna needs to be arranged no matter the communication module or the GPS positioning module, and due to installation reasons or antenna reasons or other external reasons, the problem that the antenna is opened or short-circuited to cause abnormal signal receiving exists, so that abnormal communication is caused. The manual troubleshooting is low in efficiency, time and labor are wasted in step troubleshooting if a universal meter is used for checking power supply everywhere, and accordingly a fault detection circuit for an industrial air conditioner is provided to solve related problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that manual troubleshooting is inefficient when the communication goes wrong, the utility model provides a fault detection circuit for industrial air conditioner.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides a fault detection circuit for industrial air conditioner, is including setting up the current detection resistance on the antenna power supply line, the one end of detecting the current resistance is passed through resistance R18 and is connected with triode Q8's projecting pole, the other end of detecting the current resistance passes through resistance R20 and is connected with triode Q7's projecting pole, triode Q8's collecting electrode passes through resistance R15 ground connection, triode Q7's collecting electrode passes through resistance R14 ground connection, triode Q8's base is connected with triode Q7's base, triode Q7's base is connected rather than the collecting electrode, triode Q8's collecting electrode passes through resistance R16 and is connected with the singlechip, triode Q7 and triode Q8 are PNP type triode. When the antenna is in different states, a series voltage division circuit consisting of a resistor R18 and a resistor R15 obtains divided voltage for detection of the single chip microcomputer, a triode Q8 which can be switched on and off is arranged in the series voltage division circuit, and the other series voltage division circuit consisting of a resistor R20 and a resistor R14 can control the state of the triode Q8. When the antenna breaks down, the fault can be detected, the fault reason is clear, and the problem of low manual troubleshooting efficiency is avoided. Meanwhile, the circuit structure optimizes a fault detection circuit, has simple structure, is easy to realize, does not need to use an expensive integrated circuit and has low cost.
Further, a resistor R19 is arranged between the base electrode of the triode Q7 and the collector electrode thereof.
Furthermore, a thermal fuse tube is arranged on the antenna power supply circuit.
Implement the utility model discloses the beneficial effect who brings is:
when the antenna is in different states, a series voltage division circuit consisting of a resistor R18 and a resistor R15 obtains divided voltage for detection of the single chip microcomputer, a triode Q8 which can be switched on and off is arranged in the series voltage division circuit, and the other series voltage division circuit consisting of a resistor R20 and a resistor R14 can control the state of the triode Q8. When the antenna breaks down, the fault can be detected, the fault reason is clear, and the problem of low manual troubleshooting efficiency is avoided. Meanwhile, the circuit structure optimizes a fault detection circuit, has a simple structure, is easy to realize, does not need to use an expensive integrated circuit, and has low cost.
Drawings
Fig. 1 is a circuit structure diagram for detecting faults of an industrial air conditioner according to an embodiment of the present invention.
In the figure: r13, a current detection resistor; f1, a thermal fuse.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, an industrial air conditioner, be equipped with communication module and orientation module, communication module and orientation module are provided with external antenna, in order to realize the fault monitoring when the antenna is opened a way or the short circuit, the utility model discloses still supply a fault detection circuit for industrial air conditioner, including setting up the current detection resistance R13 on the antenna power supply line, current detection resistance R13's one end is passed through resistance R18 and is connected with triode Q8's projecting pole, current detection resistance R13's the other end is passed through resistance R20 and is connected with triode Q7's projecting pole, triode Q8's collecting electrode passes through resistance R15 ground connection, triode Q7's collecting electrode passes through resistance R14 ground connection, triode Q8's base is connected with triode Q7's base, triode Q7's base is connected with its collecting electrode, triode Q8's collecting electrode passes through resistance R16 and is connected with the singlechip. The triode Q7 and the triode Q8 are PNP type triodes.
In fig. 1, the DET port is connected to the single chip microcomputer; the ANT port can be connected with a GPS or 4G antenna, and when the antenna is short-circuited, the current flowing through the current detection resistor R13 is the maximum; when the antenna is open, the current flowing through the current detection resistor R13 is minimum; when the antenna is working normally, the current flowing through the current detection resistor R13 is normal.
When the base of the triode Q8 is at a low level, the triode Q8 is conducted, the resistor R18 and the resistor R15 form a series voltage division circuit, the divided voltage is sent to the single chip microcomputer to be sampled by AD, and therefore voltage is obtained, and the antenna is judged to be in an open circuit, a short circuit or a normal state according to the voltage value.
When the antenna is open-circuited, the sampling voltage is set as V1, and the sampling voltage V1 is higher due to the disconnection of the antenna load;
when the antenna is normal, the sampling voltage is set as V2, and the sampling voltage V2 is moderate due to normal connection of the antenna load;
when the antenna is in short circuit, the sampling voltage is set as V3, the voltage is pulled down by the load due to the short circuit of the antenna load, and the sampling voltage V3 is lower in voltage.
Similarly, the resistor R20 and the resistor R14 also form a serial voltage dividing circuit, the divided voltage of the serial voltage dividing circuit is input to the base electrodes of the triode Q7 and the triode Q8, and when the divided voltage changes, the saturation of the triode Q7 and the saturation of the triode Q8 are adjusted, so that the consumption of large electric energy is avoided, and the electric energy loss is caused.
Further, the base of the triode Q7 is connected with the collector thereof through a resistor R19, and is adjusted through the resistor R19.
Further, in order to prevent the current from being excessively large when the entire circuit is short-circuited, a thermal fuse F1 is provided on the antenna power supply line, one end of the thermal fuse F1 is connected to the resistor R13 and the resistor R20, and the other end of the thermal fuse F1 is used for connecting a power supply.
Further, in order to ensure the stability of the single chip microcomputer AD sampling, the DET port is grounded through a resistor R17 and a capacitor C13 which are used for filtering respectively.
Implement the utility model provides a beneficial effect that a fault detection circuit for industrial air conditioner brought does:
when the antenna is in different states, a series voltage division circuit consisting of a resistor R18 and a resistor R15 obtains divided voltage for detection of the single chip microcomputer, a triode Q8 which can be switched on and off is arranged in the series voltage division circuit, and the other series voltage division circuit consisting of a resistor R20 and a resistor R14 can control the state of the triode Q8. When the antenna breaks down, the fault can be detected, the fault reason is clear, and the problem of low manual troubleshooting efficiency is avoided. Meanwhile, the circuit structure optimizes a fault detection circuit, has simple structure, is easy to realize, does not need to use an expensive integrated circuit and has low cost.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides a fault detection circuit for industrial air conditioner, a serial communication port, including setting up current detection resistance (R13) on the antenna power supply circuit, the one end of current detection resistance (R13) is passed through resistance R18 and is connected with triode Q8's projecting pole, the other end of current detection resistance (R13) passes through resistance R20 and is connected with triode Q7's projecting pole, triode Q8's collecting electrode passes through resistance R15 ground connection, triode Q7's collecting electrode passes through resistance R14 ground connection, triode Q8's base and triode Q7's base are connected, triode Q7's base is connected with its collecting electrode, triode Q8's collecting electrode passes through resistance R16 and is connected with the singlechip, triode Q7 and triode Q8 are PNP type triode.
2. The fault detection circuit for the industrial air conditioner as claimed in claim 1, wherein a resistor R19 is disposed between the base of the triode Q7 and the collector thereof.
3. A fault detection circuit for industrial air conditioners according to claim 2 characterized in that a thermal fuse (F1) is also provided on the antenna supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221745582.2U CN217717961U (en) | 2022-07-05 | 2022-07-05 | Fault detection circuit for industrial air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221745582.2U CN217717961U (en) | 2022-07-05 | 2022-07-05 | Fault detection circuit for industrial air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217717961U true CN217717961U (en) | 2022-11-01 |
Family
ID=83776332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221745582.2U Active CN217717961U (en) | 2022-07-05 | 2022-07-05 | Fault detection circuit for industrial air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217717961U (en) |
-
2022
- 2022-07-05 CN CN202221745582.2U patent/CN217717961U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240926 Address after: Building 1, 5500 Yuanjiang Road, Minhang District, Shanghai 201100 Patentee after: Shanghai Great Wall Deli Engineering Co.,Ltd. Country or region after: China Address before: Room 301, No. 7, Zhongtai Road, Loucun Community, Xinhu Street, Guangming District, Shenzhen, Guangdong, China (Caspree Factory) Patentee before: Shenzhen OnePlus Energy Saving Technology Co.,Ltd. Country or region before: China |