CN106054015A - Navigation aid lamp isolation transformer open-circuit state monitoring device and control method - Google Patents

Abstract

A navigation light isolation transformer open-circuit state monitoring device. The device includes an upper computer system and a transformer state monitoring unit; the upper computer system uses an industrial control computer and is installed in the navigation light workstation, and the transformer state monitoring unit is installed in the transformer bucket with the isolation transformer (the secondary side is composed of the main winding and the auxiliary winding) , used for information collection and transmission of the isolation transformer, and the transformer status monitoring unit communicates with the upper computer system through wireless. The open-circuit state monitoring device and control method of the navigation light isolation transformer provided by the present invention can effectively detect whether the main winding on the secondary side of the isolation transformer is open, and can detect whether there is current in the navigation light circuit, thereby further judging that the fault occurs in the isolation transformer It is also a navigation light, and it will report to the upper computer system in real time, so as to avoid the problem that the navigation light circuit cannot be dealt with in time due to the failure of the isolation transformer winding.

Description

An open-circuit state monitoring device and control method for an isolation transformer of navigation lights

technical field

The invention belongs to the technical field of state monitoring of navigation lights, and in particular relates to a monitoring device and a control method for the open circuit state of an isolation transformer of navigation lights.

Background technique

The airport navigation light system is a necessary visual aid to ensure the normal takeoff, landing and taxiing of aircraft at night, low visibility and other complex weather conditions. At present, the commonly used airport navigation light system generally uses a series circuit to provide power to the navigation light. In the airport navigation light circuit, the isolation transformer for the navigation light is one of the important components of the power supply and dimming system for the navigation light. 1. Its primary winding is in the series constant current main circuit, and the dimmer is set according to the light levels of the airport navigation light system, and the secondary winding supplies power to the navigation lights; the isolation transformers are connected to each other through plugs and sockets, In this way, the power supply network of navigation lights is formed. The working reliability of the airport navigation light system is closely related to the safety of the aircraft, but the performance of the navigation light will have problems due to factors such as the surrounding environment and its own life, which will affect the normal operation of the airport, so it is very important to monitor the working status of the navigation light important. The open-circuit fault detection of the secondary side of the isolation transformer is a difficult point in the status monitoring of the navigation lights. The current detection device for the navigation lights cannot realize the open-circuit fault detection of the secondary side of the transformer. At present, the navigation light detection device generally shares the secondary winding of the isolation transformer with the navigation light. Once the navigation light detection device fails, it will directly affect the normal operation of the navigation light. In addition, if the secondary side of the isolation transformer is open, the auxiliary It is impossible to monitor the state of the navigation light with the navigation light detection device.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a monitoring device and a control method for the open circuit state of the isolation transformer of the navigation light.

In order to achieve the above object, the open-circuit state monitoring device for the navigation light isolation transformer provided by the present invention includes: a host computer system and a transformer state monitoring unit; wherein: the host computer system selects an industrial control computer and is arranged in the navigation light workstation; The unit is installed in the transformer barrel together with the isolation transformer, and is used for information collection and transmission of the isolation transformer. Multiple transformer status monitoring units) communicate with the upper computer system through wireless.

The transformer state monitoring unit includes: a wireless communication module, a microprocessor module, a power supply module, a power switch, and a sensor module; wherein: the navigation lights are connected to the secondary main winding of the isolation transformer through the power switch and the sensor module in turn, and the This constitutes a navigation light circuit; the microprocessor module is connected with the power switch, sensor module, wireless communication module and power supply module respectively; the wireless communication module is connected with the upper computer system; the power supply module is connected with the secondary auxiliary winding of the isolation transformer; The primary side of the transformer is connected to the main circuit of the constant current power supply; the detection circuit is composed of the isolation transformer, the wireless communication module, the microprocessor module and the power supply module. The sensor module is a Hall current sensor; the wireless communication module is a 2.4GHz general frequency band wireless data transmission module.

The upper computer system includes: a host computer and a wireless transmission module; wherein: the host computer is connected to a plurality of transformer state monitoring units through the wireless transmission module.

The control method of the open-circuit state monitoring device of the navigation light isolation transformer provided by the present invention includes the following steps executed in sequence:

Step 1, S1 stage of system initialization: system initialization includes the initialization of the upper computer system and each transformer status monitoring unit;

Step 2, the S2 stage of collecting current information: the microprocessor module on the transformer state monitoring unit collects the current information of the navigation light circuit through the sensor module;

Step 3, the S3 stage of judging whether the sensor module detects the current: the microprocessor module judges whether there is current according to the current information detected by the sensor module, if the judgment result is "yes", then returns to the S2 stage and continues to collect current signals, otherwise enters The next step is the S4 stage;

Step 4, the S4 stage in which the power switch is closed for 3 seconds and then disconnected: under the control of the microprocessor module, the power switch is closed for 3 seconds and then disconnected. During this period, the sensor module is used to detect whether there is current in the circuit of the navigation light;

Step 5, the S5 stage of judging whether the sensor module detects the current: the microprocessor module judges whether there is current according to the current information detected by the sensor module during the closing period of the power switch again, and if the judgment result is "yes", then enters the next step S6 stage, Otherwise, enter the next step S7 stage;

Step 6, the S6 stage of the navigation light open circuit alarm: it is proved that the navigation light is open circuit, and enter the next step S8 stage;

Step 7. The S7 stage of the isolation transformer open circuit alarm: it is proved that the secondary main winding of the isolation transformer is open circuit, and enter the next step S9 stage;

Step 8, the S8 stage in which the power switch is closed: control the power switch to close, and then enter the S9 stage;

Step 9, the S9 stage of data upload: the transformer state monitoring unit sends the relevant information of this current detection to the host computer system through the wireless communication module;

Step 10. The S10 stage of starting the alarm: After receiving the information uploaded by the transformer status monitoring unit, the upper computer system will prompt according to the type of fault, so that the staff of the navigation light workstation can perform maintenance in time.

The open-circuit state monitoring device and control method of the navigation light isolation transformer provided by the present invention can effectively detect whether the main winding on the secondary side of the isolation transformer is open, and can detect whether there is current in the navigation light circuit, thereby further judging where the fault occurs The isolation transformer is also a navigation light, and it will report to the upper computer system in real time, so that the problem that the navigation light circuit cannot be dealt with in time due to the failure of the main winding can be avoided.

Description of drawings

Fig. 1 is a composition block diagram of an open-circuit state monitoring device for an isolation transformer of a navigation light provided by the present invention.

Figure 2 is a schematic diagram of the structure of the transformer state monitoring unit.

Fig. 3 is a flow chart of the control method of the open-circuit state monitoring device for the isolation transformer of the navigation light provided by the present invention.

detailed description

The open-circuit state monitoring device and control method of the navigation light isolation transformer provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the open-circuit state monitoring device of the navigation light isolation transformer provided by the present invention includes:

The upper computer system 20 and the transformer state monitoring unit 10; wherein: the upper computer system 20 selects an industrial control computer and is set in the navigation light workstation; the transformer state monitoring unit 10 is the same as the isolation transformer 106 (the secondary winding is composed of a main winding and an auxiliary winding ) are installed together in the transformer bucket for information collection and transmission of the isolation transformer 106, and multiple transformer state monitoring units 10 communicate with the upper computer system 20 through wireless.

As shown in Figure 2, the transformer state monitoring unit 10 includes: a wireless communication module 101, a microprocessor module 102, a power supply module 103, a power switch 104, and a sensor module 105;

Wherein: the navigation light 107 is connected with the secondary main winding of the isolation transformer 106 through the power switch 104 and the sensor module 105 in turn, thus forming the navigation light circuit; the microprocessor module 102 is respectively connected with the power switch 104, the sensor module 105, the wireless The communication module 101 is connected to the power supply module 103; the wireless communication module 101 is connected to the upper computer system 20; the power supply module 103 is connected to the secondary auxiliary winding of the isolation transformer 106; the primary side of the isolation transformer 106 is connected to the constant current power supply; the isolation transformer 106 , the sensor module 105 , the wireless communication module 101 , the microprocessor module 102 and the power supply module 103 form a detection loop.

The secondary winding of the isolation transformer 106 is a dual-winding output, and the two windings are isolated from each other, one of which is the main winding for powering the navigation lights 107, and the other winding is an auxiliary winding for powering the microprocessor The two ends of the primary side of the isolation transformer 106 are respectively connected to the two terminals of the main loop of the constant current power supply. The open-circuit fault of the main winding of the isolation transformer 106 is determined through the cooperation of the sensor module 105 and the power switch 104; the detection circuit is powered independently, so the normal operation of the main circuit of the navigation light will not be affected when a fault occurs.

The power supply module 103 is used to provide +3.3V operating voltage for the microprocessor module 102, the sensor module 105 and the wireless communication module 101; the sensor module 105 is a Hall current sensor connected in series in the navigation light circuit, when isolated When the transformer 106 is open circuit or the navigation light 107 is open circuit, the sensor module 105 detects that there is no current in the navigation light circuit, and it is preliminarily determined that the isolation transformer 106 is open circuit or the navigation light 107 is open circuit; further control the power under the control of the microprocessor module 102 Switch 104 is closed, if there is still no current in the navigation light circuit, it is determined that the isolation transformer 106 is open, otherwise, the navigation light 107 is open; if the navigation light 107 is open, then close the power switch 104 to reduce the number of navigation lights. 107 open circuit affects the main circuit of constant current power supply. The wireless communication module 101 is a communication unit based on a wireless sensor network, and uses a common frequency band of 2.4 GHz for communication. The microprocessor module 102 adopts an embedded microprocessor chip, which is used to control the data collection of the sensor module 105, turn on or turn off the power switch 104, determine the status of the isolation transformer 106, and send and receive monitoring information.

As shown in Figure 1, the host computer system 20 includes: a host computer 201 and a wireless transmission module 202; wherein: the host computer 201 is connected to a plurality of transformer state monitoring units 10 through the wireless transmission module 202;

The host computer 201 is set in the navigation light workstation for processing and displaying the collected information, providing the status of the isolation transformer 106 in the navigation light circuit for the staff of the navigation light workstation, and the wireless transmission module 202 receives the transformer status monitoring unit 10 The detected and uploaded status information of the isolation transformer 106 is sent to the host 201 .

Both the wireless communication module 101 and the wireless transmission module 202 use a 2.4GHz general frequency band wireless data transmission module, and realize data exchange through the GPRS wireless network.

As shown in Figure 3, the control method of the open-circuit state monitoring device of the navigation light isolation transformer provided by the present invention includes the following steps executed in sequence:

Step 1, the S1 stage of system initialization: system initialization includes the initialization of host computer system (20) and each transformer state monitoring unit 10;

Step 2, the S2 stage of collecting current information: the microprocessor module 102 on the transformer state monitoring unit 10 collects the current information of the navigation light loop through the sensor module 105;

Step 3, the S3 stage of judging whether the sensor module detects the current: the microprocessor module 102 judges whether there is current according to the current information detected by the sensor module 105, if the judgment result is "yes", then returns to the S2 stage, and continues to collect the current signal, Otherwise, enter the next step S4 stage;

Step 4, the S4 stage in which the power switch is closed for 3 seconds and then disconnected: under the control of the microprocessor module 102, the power switch 104 is closed for 3 seconds and then disconnected. During this period, the sensor module 105 is used to detect whether there is current;

Step 5, the S5 stage of judging whether the sensor module detects the current: the microprocessor module 102 judges whether there is current according to the current information detected by the sensor module (105) during the closed period of the power switch 104 again, and if the judgment result is "yes", then enters The next step is the S6 stage, otherwise enter the next step S7 stage;

Step 6, the S6 stage of the navigation light open circuit alarm: it is proved that the navigation light 107 is open, and enters the next step S8 stage;

Step 7, the S7 stage of the isolation transformer open circuit alarm: it is proved that the secondary main winding of the isolation transformer 106 is open circuit, and enter the next step S9 stage;

Step 8, the S8 stage of power switch closing: control the power switch 104 to close, and then enter the S9 stage;

Step 9, the S9 stage of data upload: the transformer state monitoring unit 10 sends the current detection related information to the upper computer system 20 through the wireless communication module 201;

Step 10: Stage S10 of starting the alarm: After receiving the information uploaded by the transformer status monitoring unit 10, the upper computer system 20 will prompt according to the type of fault, so that the staff of the navigation light workstation can perform maintenance in time.

Claims (5)

1. A navigation light isolation transformer open circuit state monitoring device is characterized in that: the navigation light isolation transformer open circuit state monitoring device comprises a host computer system (20) and a transformer state monitoring unit (10); wherein: the host computer The system (20) selects an industrial control computer and is installed in the navigation light workstation. The transformer state monitoring unit (10) is installed in the transformer bucket together with the isolation transformer, and is used for information collection and transmission of the isolation transformer (106) and transformer state monitoring. The unit (10) communicates with the upper computer system (20) in a wireless manner. 2. The open-circuit state monitoring device of the navigation light isolation transformer according to claim 1, characterized in that: the transformer state monitoring unit (10) comprises: a wireless communication module (101), a microprocessor module (102), Power supply module (103), power switch (104), sensor module (105); Wherein: the navigation light (107) is connected with the secondary main winding of the isolation transformer (106) through the power switch (104) and the sensor module (105) in turn, thus forming the navigation light circuit; the microprocessor module (102) respectively It is connected with the power switch (104), the sensor module (105), the wireless communication module (101) and the power supply module (103); the wireless communication module (101) is connected with the upper computer system (20); the power supply module (103) is isolated from the The secondary auxiliary winding of the transformer (106) is connected; the primary side of the isolation transformer (106) is connected to the constant current power supply; the isolation transformer (106), the wireless communication module (101), the microprocessor module (102) and the power supply module ( 103) Form a detection loop. 3. The open-circuit state monitoring device for the isolation transformer of navigation lights according to claim 2, characterized in that: the sensor module (105) is a Hall current sensor; the wireless communication module (101) is a 2.4GHz general frequency band wireless data Transport module. 4. The open-circuit state monitoring device for the isolation transformer of navigation lights according to claim 1, characterized in that: the host computer system (20) includes: a host (201) and a wireless transmission module (202); wherein: the host ( 201) Connect with the transformer state monitoring unit (10) through the wireless transmission module (202). 5. A control method for an open-circuit state monitoring device for an isolation transformer of navigation lights as claimed in claim 1, wherein said control method comprises the following steps executed in order: Step 1, the S1 stage of system initialization: system initialization includes the initialization of the upper computer system (20) and each transformer state monitoring unit (10); Step 2, the S2 stage of collecting current information: the microprocessor module (102) on the transformer state monitoring unit (10) collects the current information of the navigation light circuit through the sensor module (105); Step 3, the S3 stage of judging whether the sensor module detects the current: the microprocessor module (102) judges whether there is current according to the current information detected by the sensor module (105), if the judgment result is "yes", then returns to the S2 stage and continues Collect the current signal, otherwise enter the next step S4 stage; Step 4, the S4 stage that the power switch is closed and disconnected after 3 seconds: under the control of the microprocessor module (102), the power switch (104) is closed and disconnected after 3 seconds, during which the sensor module (105) is used to detect the auxiliary Whether there is current in the navigation light circuit; Step 5, the S5 stage of judging whether the sensor module detects the current: the microprocessor module (102) judges whether there is current according to the current information detected by the sensor module (105) during the closed period of the power switch (104) again, if the judgment result is "Yes ", enter the next step S6, otherwise enter the next step S7; Step 6, the S6 stage of the navigation light open circuit alarm: it is proved that the navigation light (107) is open, and enters the next step S8 stage; Step 7, the S7 stage of the isolation transformer open circuit alarm: it is proved that the secondary side main winding of the isolation transformer (106) is open circuit, and enters the next step S9 stage; Step 8, the S8 stage in which the power switch is closed: control the power switch (104) to close, and then enter the S9 stage; Step 9, the S9 stage of data uploading: the transformer state monitoring unit (10) sends relevant information of this current detection to the upper computer system (20) through the wireless communication module (201); Step 10: Stage S10 of starting the alarm: After receiving the information uploaded by the transformer status monitoring unit (10), the upper computer system (20) will prompt according to the fault type, so that the staff of the navigation light workstation can perform maintenance in time.