CN217007518U - Integrated AC fan drive arrangement's fault detection device - Google Patents
Integrated AC fan drive arrangement's fault detection device Download PDFInfo
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- CN217007518U CN217007518U CN202123149566.5U CN202123149566U CN217007518U CN 217007518 U CN217007518 U CN 217007518U CN 202123149566 U CN202123149566 U CN 202123149566U CN 217007518 U CN217007518 U CN 217007518U
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- fan
- alternating current
- detection device
- relay
- current fan
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Abstract
The utility model discloses a fault detection device of an integrated alternating current fan driving device, which comprises an alternating current fan detection device, wherein an MCU (microprogrammed control unit) in an alternating current fan current driving circuit of the alternating current fan detection device is connected with a coil of a relay, a live wire of an alternating current fan is connected with the relay, and the relay is connected with one end of a primary side of a small mutual inductor; the other end of the primary side of the small mutual inductor is connected with an alternating current fan; the small-size mutual-inductor is connected to fortune and is put and resistance by the vice limit, and the output voltage value that fortune was put is passed to MCU, and MCU carries out information transmission through communication chip and outside. Compared with the prior art, the integrated alternating current fan driving device and the fault detection method thereof are combined with the reality, the detection requirements of the alternating current fan can be reasonably distributed, the installation and detection modes are more flexible, the reliability is high, and the realization is convenient.
Description
Technical Field
The utility model relates to the technical field of fault detection of alternating current fan driving devices, in particular to a fault detection device of an integrated alternating current fan driving device.
Background
With the development of science and technology, high-power electrical equipment is widely applied to various industries of society, such as energy, machinery, metallurgy and the like, because high-power equipment has high power level and large heat productivity, a plurality of cooling fans are arranged in the equipment to cool the equipment, but under certain severe environments, when the cooling fans of the high-power electrical equipment need to be opened for a long time, individual failure can be avoided, in this time, if the high-power electrical equipment continues to work, the internal temperature can be increased, and under the condition that a temperature fault value is not reached, the service life of the high-power electrical equipment can be shortened, so that unnecessary loss is caused. Fan failure detection is especially important. The existing detection circuit cannot monitor whether the used alternating current fan is damaged or not through a simple circuit.
To solve this problem, it is necessary to develop a fault detection device of an integrated ac fan driving device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fault detection device of an integrated alternating current fan driving device, which reasonably distributes the detection requirements of alternating current fans, has more flexible installation and detection modes, high reliability and convenient implementation and is used for solving the technical problem that the existing detection circuit cannot monitor whether the used alternating current fan is damaged or not through a simple circuit.
The technical problem to be solved by the present invention is to provide a fault detection device of an integrated ac fan driving device, which includes an ac fan detection device, wherein the ac fan detection device includes a relay, a communication chip, an MCU, a resistor, a small-sized transformer, and an operational amplifier; the MCU in the alternating current fan current driving circuit of the alternating current fan detection device is connected with a coil of the relay, a live wire of the alternating current fan is connected with the relay, and the relay is connected with one end of the primary side of the small mutual inductor; the other end of the primary side of the small mutual inductor is connected with an alternating current fan; the secondary side of the small mutual inductor is connected with an operational amplifier and a resistor, the output voltage value of the operational amplifier is transmitted to the MCU, and the MCU performs information transmission with the outside through a communication chip;
preferably, the alternating current fan detection device is connected with the alternating current fan to detect the current of the alternating current fan, the alternating current fan detection device is connected with the control core unit in a CAN bus communication mode, and the control core unit is connected with the PC;
preferably, a live wire L of the alternating current fan is connected to the alternating current fan detection device, passes through a COM end of the relay, an NO end of the relay and a primary side of the small-sized mutual inductor, and then is connected to the alternating current fan, and the other end of the alternating current fan is connected to a zero line N;
preferably, the MCU outputs a signal through the IO interface to drive a coil of the relay to attract, an NO contact of the relay is contacted with a COM end, an alternating current fan loop is formed, and the alternating current fan runs;
preferably, the current in the alternating current fan loop passes through the primary side of the small-sized mutual inductor, the current induced by the secondary side passes through a resistor and an operational amplifier to generate voltage, and the voltage value is fed back to the MCU;
preferably, the MCU transmits the voltage value to the control core unit in a CAN bus communication mode, the control core unit compiles a set variable ratio relation between the alternating current fan current value and the voltage value output by the operational amplifier according to a software program, and is connected with the PC in an RS422 communication mode, and the real-time alternating current fan current value is displayed on the PC;
if the current value of the alternating current fan transmitted by the MCU of the alternating current fan detection device is smaller than the threshold value of the alternating current fan disconnection, the control core unit displays the alternating current fan disconnection fault on the PC; if the current value of the alternating current fan transmitted by the MCU of the alternating current fan detection device is larger than the locked-rotor threshold value of the alternating current fan, the control core unit displays the locked-rotor fault of the alternating current fan on the PC;
when the alternating current fan detection demand of the high-power electrical equipment is large, the current value of the alternating current fan CAN be collected in a centralized manner by adding a plurality of alternating current fan detection devices, and all the current values are transmitted to the control core unit through communication modes such as a CAN bus, the control core unit CAN feed all the fault states of all the alternating current fans back to the PC for display through communication modes such as RS422 according to the disconnection and locked-rotor threshold logic of the alternating current fan preset by a software program; compared with the prior art, the utility model combines the reality, can reasonably distribute the detection requirements of the alternating current fan, has more flexible installation and detection modes, high reliability and convenient realization.
Drawings
FIG. 1 is a schematic diagram of the operation of AC fan driving and detection in the present invention;
FIG. 2 is a schematic diagram of the AC fan detection device and the control core unit for controlling and detecting the AC fan;
the labels in the figures are: the system comprises a 1-alternating current fan detection device, a 2-control core unit, a 3-PC emergency, a 4-alternating current fan, a 11-relay, a 12-communication chip, a 13-MCU, a 14-resistor, a 15-small mutual inductor and a 16-operational amplifier.
Detailed Description
The present invention will be further described with reference to FIGS. 1-2 and the detailed description thereof; the following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the utility model in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the utility model. All falling within the scope of the present invention.
Referring to fig. 1-2, an integrated ac fan driving apparatus and a fault detection method thereof, an ac fan detection apparatus, and a control core unit are disclosed. The alternating current fan detection device comprises an alternating current fan driving circuit, an alternating current fan current detection circuit and an alternating current fan state feedback circuit, wherein the alternating current fan driving circuit is used for connecting a live wire of an alternating current fan into the alternating current fan detection device and driving the alternating current fan to start and stop through a control core unit; the alternating current fan current detection circuit is characterized in that a live wire of an alternating current fan is connected in series with a primary side of a small mutual inductor, and an induced current of a secondary side of the small mutual inductor passes through a resistor and an operational amplifier to generate voltage; the AC fan state feedback circuit is characterized in that the secondary side induced current of the small mutual inductor is connected to an ADC pin of an MCU of the fan driving detection device through a resistor and a voltage generated by an operational amplifier, the MCU transmits the voltage to a control core unit through communication modes such as a CAN bus, the control core unit controls logic of starting and stopping an AC fan, the AC fan collects data, and whether the fault occurs or not is judged through the data.
Specifically, the fault detection device of the integrated alternating current fan driving device comprises an alternating current fan detection device 1, wherein the alternating current fan detection device 1 comprises a relay 11, a communication chip 12, an MCU13, a resistor 14, a small mutual inductor 15 and an operational amplifier 16; the MCU13 in the alternating current fan current driving circuit of the alternating current fan detection device 1 is connected with a coil of the relay 11, a live wire of the alternating current fan 4 is connected with the relay 11, and the relay 11 is connected with one end of the primary side of the small mutual inductor 15; the other end of the primary side of the small mutual inductor 15 is connected with the alternating current fan 4; the secondary side of the small mutual inductor 15 is connected with the operational amplifier 16 and the resistor 14, the output voltage value of the operational amplifier 16 is transmitted to the MCU13, and the MCU13 carries out information transmission with the outside through the communication chip 12;
the alternating current fan detection device 1 is connected with the alternating current fan 4 to detect the current of the alternating current fan 4, the alternating current fan detection device 1 is connected with the control core unit 2 in a CAN bus communication mode, and the control core unit 2 is connected with the PC 3; a live wire L of the alternating current fan 4 is connected to the alternating current fan detection device 1, passes through a COM end of the relay 11, an NO end of the relay 11 and a primary side of the small mutual inductor 15, and then is connected to the alternating current fan 4, and the other end of the alternating current fan 4 is connected to a zero line N; the MCU13 drives a coil of the relay 11 to suck through an IO interface output signal, an NO contact of the relay 11 is contacted with a COM end, a loop of the alternating current fan 4 is formed, and the alternating current fan runs; the current in the loop of the alternating current fan 4 passes through the primary side of the small mutual inductor 15, the current induced by the secondary side passes through the resistor 14 and the operational amplifier 16 to generate voltage, and the voltage value is fed back to the MCU 13; the MCU13 transmits the voltage value to the control core unit 2 through the CAN bus communication mode, the control core unit 2 compiles the ratio relation between the set alternating current fan current value and the voltage value output by the operational amplifier 16 according to a software program, and is connected with the PC 3 through the RS422 communication mode, and the real-time alternating current fan current value is displayed on the PC 3;
if a software program of the control core unit 2 is preset with an ac fan disconnection and rotation blockage current threshold, if it is desired to visually find out whether the ac fan 4 has a fault, the control core unit 2 only needs to compare an ac fan current value transmitted by the MCU13 of the ac fan detection device 1 with an ac fan disconnection and rotation blockage current threshold preset in the control core unit 2, and if the ac fan current value transmitted by the MCU13 of the ac fan detection device 1 is smaller than the ac fan disconnection threshold value, the control core unit 2 displays the ac fan disconnection fault on the PC 3; if the value of the current of the alternating current fan transmitted by the MCU13 of the alternating current fan detection device 1 is larger than the value of the locked-rotor threshold of the alternating current fan, the control core unit 2 displays the locked-rotor fault of the alternating current fan on the PC 3; when the alternating current fan detection demand of the high-power electrical equipment is large, the current value of the alternating current fan CAN be collected in a centralized mode by adding a plurality of alternating current fan detection devices, all the current values are transmitted to the control core unit through communication modes such as a CAN bus, the control core unit CAN feed all the fault states of all the alternating current fans back to the PC for display through communication modes such as RS422 according to the preset alternating current fan disconnection and locked-rotor threshold logic of a software program. Compared with the prior art, the utility model combines the reality, can reasonably distribute the detection requirements of the alternating current fan, has more flexible installation and detection modes, high reliability and convenient realization.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention/utility model.
The foregoing description has described specific embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model.
Claims (6)
1. The fault detection device of the integrated alternating current fan driving device is characterized by comprising an alternating current fan detection device (1), wherein the alternating current fan detection device (1) comprises a relay (11), a communication chip (12), an MCU (13), a resistor (14), a small mutual inductor (15) and an operational amplifier (16);
an MCU (13) in an alternating current fan current driving circuit of the alternating current fan detection device (1) is connected with a coil of a relay (11), a live wire of an alternating current fan (4) is connected with the relay (11), and the relay (11) is connected with one end of the primary side of a small mutual inductor (15); the other end of the primary side of the small mutual inductor (15) is connected with the alternating current fan (4); the small-sized mutual inductor (15) is connected with the operational amplifier (16) and the resistor (14) on the secondary side, the output voltage value of the operational amplifier (16) is transmitted to the MCU (13), and the MCU (13) is in information transmission with the outside through the communication chip (12).
2. The fault detection device of an integrated ac fan driving device according to claim 1, wherein the ac fan detection device (1) is connected to the ac fan (4) to detect the current of the ac fan (4), the ac fan detection device (1) is connected to the control core unit (2) through a CAN bus communication manner, and the control core unit (2) is connected to the PC (3).
3. An integrated ac fan drive fault detection device as claimed in claim 1 or 2, wherein the live line L of the ac fan (4) is connected to the ac fan detection device (1), passes through the COM terminal of the relay (11), the NO terminal of the relay (11), the primary side of the small mutual inductor (15), and is connected to the ac fan (4), and the other terminal of the ac fan (4) is connected to the neutral line N.
4. An integrated AC fan driving device fault detection device as claimed in claim 3, wherein the MCU (13) outputs a signal through the IO interface to drive the coil of the relay (11) to close, the NO contact of the relay (11) is contacted with the COM end, the AC fan (4) loop is formed, and the AC fan is operated.
5. An integrated ac fan drive fault detection device as claimed in claim 4, characterized in that the current in the ac fan (4) loop is passed through the primary side of a small transformer (15), and the current induced in the secondary side is passed through a resistor (14) and an operational amplifier (16) to generate a voltage, the value of which is fed back to the MCU (13).
6. The fault detection device of an integrated ac fan driving apparatus according to claim 5, wherein the MCU (13) transmits the voltage value to the control core unit (2) through the CAN bus communication method, the control core unit (2) compiles the ratio relationship between the set ac fan current value and the voltage value output by the operational amplifier (16) according to the software program, and connects the PC (3) through the RS422 communication method, and displays the real-time ac fan current value on the PC (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123149566.5U CN217007518U (en) | 2021-12-15 | 2021-12-15 | Integrated AC fan drive arrangement's fault detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123149566.5U CN217007518U (en) | 2021-12-15 | 2021-12-15 | Integrated AC fan drive arrangement's fault detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217007518U true CN217007518U (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123149566.5U Active CN217007518U (en) | 2021-12-15 | 2021-12-15 | Integrated AC fan drive arrangement's fault detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217007518U (en) |
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2021
- 2021-12-15 CN CN202123149566.5U patent/CN217007518U/en active Active
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