Control and protection switch circuit for high-pole lamp

Abstract

The invention belongs to the technical field of high-pole lamp control devices, and particularly relates to a control and protection switch circuit for a high-pole lamp. The circuit comprises a main loop, the main loop comprises a power switch module and a relay module which are sequentially connected, and the input end of the power switch module is used for being externally connected with a power supply; the control loop comprises a single-chip microcomputer and an input module connected with the single-chip microcomputer. The single-chip microcomputer is used for controlling on-off and switching of the relay module. The rectification module is used for converting low-voltage direct current from the main loop and providing the low-voltage direct current to the control loop. The high-pole lamp control device is used for solving the problems that the high-pole lamp control device is high in cost, poor in reliability and prone to misoperation. A main loop and a control loop are modularized to replace a conventional relay for connection, complicated parts are avoided, the overall size is smaller, a single-chip microcomputer is used in the control loop to replace a relay, a time switch and the like in the conventional control loop, a large amount of wiring labor cost is saved, the single-chip microcomputer provides current through a rectification module, and the cost is reduced. And stability and higher safety can be ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of high pole lamp control devices, and in particular relates to a control and protection switch circuit for a high pole lamp. Background Art

[0002] High pole lamps are lighting devices composed of combined lamp racks with a general height of 15-40 meters. The lighting radius can reach 60 meters. They are widely used in squares, stadiums, airports, overpasses, etc. High pole lamps are generally liftable, which consists of a lamp panel with lamps, a lamp pole, a lifting structure, and an electrical control device.

[0003] The lamp panel can be raised or lowered, and the lamps on the lamp panel can be turned on and off. The lamp panel is the main part of the high pole lamp for daily maintenance. The opening and closing of the lighting fixtures on the lamp panel, as well as the rising hook and unhooking and lowering, are all controlled by the electrical control device; At present, the electrical control boards of high pole lamps on the market are assembled from a variety of conventional circuit components, which have the following defects and problems: the secondary control circuit is cumbersome, the circuit board assembly is large, the labor cost and material cost of the primary and secondary lines are high, there are many fault nodes, the reliability is poor, and the on-site installation, operation, and maintenance are not simple. There is no fool-proof design, which is easy to operate incorrectly and has poor safety. When the high pole lamp panel is lowered, the power circuit breaker of the lamp group must be turned off and the wiring of the lamp panel on the control circuit must be removed. Because the lamp panel must be raised and unhooked before it is lowered, if it is operated incorrectly and the winch is started directly, it is easy to cause the cable to break or the circuit control panel to be damaged, and cause safety accidents. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a control and protection switch circuit for a high pole lamp, which is used to solve the problems of high cost, poor reliability and easy misoperation of the high pole lamp control device.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: A control and protection switch circuit for a high pole lamp, comprising: A main circuit, the main circuit comprising a power switch module and a relay module connected in sequence, the input end of the power switch module is used for external power supply, and the output end of the relay module is used for outputting driving power; A control circuit, the control circuit comprising a single-chip microcomputer and an input module connected to the single-chip microcomputer, the single-chip microcomputer being used to control the on / off and switching of the relay module; The rectifier module is connected between the main circuit and the control circuit, and is used for converting low-voltage direct current from the main circuit to provide to the control circuit.

[0006] Compared with the prior art, the above technical solution has the following beneficial effects: By modularizing the main circuit and the control circuit, instead of the previous connection using relays, complicated parts are avoided and the overall volume is smaller. In addition, a single-chip microcomputer is used in the control circuit to replace the relays, time-controlled switches, etc. in the previous control circuit, saving a lot of wiring labor costs. The single-chip microcomputer provides current through the rectifier module, which can ensure stability and safety.

[0007] Based on the above technical solution, the embodiment of the present application can also be improved as follows: In one embodiment, a combined mutual inductor is further connected to the main circuit, the combined mutual inductor is connected to the single chip microcomputer, and the single chip microcomputer is used to control the on and off of the driving motor of the high pole lamp according to the change of the signal collected by the combined mutual inductor.

[0008] The mutual inductor is used to collect signal changes during the operation of the main circuit. When the change is abnormal or a jump occurs, the single-chip microcomputer is used to control the drive motor to stop. On the one hand, it can ensure the safe operation of the drive motor. On the other hand, when the drive motor is blocked from driving the lamp panel to descend, a signal jump occurs, and it can be judged that the lamp panel has reached the position hook. In this way, there is no need to use a travel switch, which avoids the problem of the travel switch contacts being easily lost due to long-term pressure without resetting.

[0009] In one embodiment, the combined transformer includes a current transformer and a leakage transformer for collecting current signals and leakage signals.

[0010] In one embodiment, the output end of the relay module is connected to a first plug-in module, and the first plug-in module is used to connect to the lighting device or the driving motor of the high pole lamp.

[0011] By setting up the first plug-in module, the first plug-in module can be connected to the lighting and the drive motor, but when turned on, only one of them can be connected to the first plug-in module, avoiding the dangerous situation caused by the drive motor and the lighting device being connected at the same time. In addition, setting up the first plug-in module can make it unnecessary to set up two branches of the main circuit corresponding to the lighting device and the drive motor, saving the cost of the main circuit.

[0012] In one embodiment, the driving motor and the lighting device are both provided with plugs matching the first plug-in module.

[0013] In one embodiment, the input end of the power switch module is connected to a second plug-in module, and the socket of the second plug-in module is configured differently from the socket of the first plug-in module.

[0014] The second plug-in module is used to insert an external power source. The jacks of the two plug-in modules are set to be different, which can prevent the external power source from being mistakenly inserted into the first plug-in module.

[0015] In one embodiment, the relay module comprises: Relay J1, relay J2 and relay J3 are respectively arranged corresponding to the three phases of the main circuit; A relay J4, one end of which is connected to the input end of the relay J1, and the other end of which is connected to the output end of the relay J3; The relay J5 has one end connected to the input end of the relay J3 and the other end connected to the output end of the relay J1.

[0016] In one embodiment, the input module includes a conversion switch, and the conversion switch is used to switch the main circuit to connect to the lighting device or the drive motor.

[0017] When the first plug-in module is used to selectively plug in the lighting device and the drive motor, a conversion switch is provided and electric control redundancy is achieved through the single-chip microcomputer.

[0018] In one embodiment, a communication module connected to the single chip microcomputer is further included, and the communication module includes a network cable interface and / or a USB interface.

[0019] In one embodiment, a display module connected to the single chip microcomputer is also included.

[0020] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. In the control circuit, various electrical components were previously designed and processed in an intensive manner using single-chip microcomputers, and the overall electrical control was greatly reduced in size; the three commonly used execution actions of lighting and motor forward and reverse were made into two groups of electrical components from three groups, which are shared by the lighting circuit and the lifting motor circuit, greatly simplifying the circuit structure and electrical components; these two aspects have made the overall structure intensive, and the functions diversified and the cost minimized have been achieved.

[0021] 2. Focus on simplification to prevent misoperation, such as the simple and foolproof design of power switches, lighting and lifting sockets.

[0022] 3. Use mutual inductor to detect current jump, and the single chip computer judges and controls the position of lamp panel according to the set threshold program, so as to realize fully automatic control of the hook positioning of high pole lamp panel, replace the control method of travel switch, and avoid the high failure rate of existing travel switch used in the open air. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is an overall block diagram of the present invention.

[0025] Figure 2 It is a circuit schematic diagram of the present invention. DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention. It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example like Figure 1-2As shown, a control and protection switch circuit for a high pole lamp provided by the present invention includes: a main circuit, a control circuit and a rectifier module, the main circuit is used to transfer electric energy connected to an external power supply to the high pole lamp, and provide electric energy for the lighting device and the drive motor in the high pole lamp, wherein the drive motor is a winch.

[0031] Specifically, the main circuit is connected to three-phase electricity, and the main circuit includes a power switch module and a relay module connected in sequence, wherein the power switch module can use a circuit breaker as the main switch of the main circuit, the input end of the power switch module is used for an external power supply, and the output end of the relay module is used to output driving power.

[0032] The control circuit is connected to the main circuit through a rectifier module, the rectifier module is connected between the main circuit and the control circuit, the input end of the rectifier module is connected to the output end of the power switch module, and is used to convert low-voltage direct current from the main circuit to the control circuit; the control circuit includes a single-chip microcomputer and an input module connected to the single-chip microcomputer, the single-chip microcomputer is used to control the on-off and switching of the relay module, specifically, the single-chip microcomputer sends out a current to control the coil of the relay module to realize the on-off control of the relay module, and realizes the integration of the functions of separate electrical components such as circuit breakers and contactors through the single-chip microcomputer; The input module includes multiple switches, such as an up switch, a down switch, a stop switch and a setting switch for motor control.

[0033] By modularizing the main circuit and the control circuit, instead of the previous connection using relays, complicated parts are avoided and the overall volume is smaller. In addition, a single-chip microcomputer is used in the control circuit to replace the relays, time-controlled switches, etc. in the previous control circuit, saving a lot of wiring labor costs. The single-chip microcomputer provides current through the rectifier module, which can ensure stability and safety.

[0034] In one embodiment, a combined mutual inductor is further connected to the main circuit, the combined mutual inductor is connected to the single chip microcomputer, and the single chip microcomputer is used to control the on and off of the driving motor of the high pole lamp according to the change of the signal collected by the combined mutual inductor.

[0035] Specifically, the combined transformer includes a current transformer and a leakage transformer for collecting current signals and leakage signals.

[0036] The entire control circuit has functions such as overload protection, leakage protection, three-phase unbalance (phase loss) protection of the motor, stall protection, over-voltage and under-voltage protection, and short-circuit protection.

[0037] By using the mutual inductor to collect the signal changes during the operation of the main circuit, when the change is abnormal or jumps, the single-chip microcomputer controls the drive motor to stop. On the one hand, it can ensure the safe operation of the drive motor. On the other hand, in the operation of the lamp panel hook, the current mutual inductor is used to detect the current jump, and the threshold is compared to determine that the winch has reached the mechanical position. After the lamp panel is hooked, the reverse drive of the motor is blocked, and the current value jumps, and then it can be determined that the lamp panel has reached the hook position; the signal is converted into a stop control for the motor. In this way, the travel switch used for hooking is replaced without the need to use the travel switch, solving the difficult problem that the existing travel switch touch point is compressed and does not reset, making the travel switch easily ineffective.

[0038] A fool-proof design is provided in the main circuit to avoid simultaneous operation of the lighting and the winch. The output end of the relay module is connected to a first plug-in module, which is used to connect the lighting device or the drive motor of the high pole lamp.

[0039] By setting up the first plug-in module, the first plug-in module can connect the lighting and the drive motor, but when connected, only one of them can be connected to the first plug-in module, avoiding the dangerous situation that the drive motor and the lighting device are connected at the same time. Specifically, the first plug-in module is shared in the switching process of the lighting and the lamp panel lifting motor operation, ensuring that the output power is not switched when the plug is: when lighting, the lamp panel lifting system cannot be operated; when the lamp panel is lifted, the lighting system cannot be operated. Its simple and error-free switching design is the primary guarantee for the safe operation of the high pole lamp, and the setting of the first plug-in module can make the main circuit do not need to set up two branches corresponding to the lighting device and the drive motor, saving the cost of the main circuit.

[0040] Specifically, the first plug-in module may be implemented in the form of a socket; Correspondingly, the driving motor and the lighting device are both provided with plugs matching the first plug-in module, and when either one is needed, the plug is plugged into the first plug-in module to obtain power.

[0041] Furthermore, the input end of the power switch module is connected to a second plug-in module, and the second plug-in module and the first plug-in module also use a socket, but the difference is that the socket of the second plug-in module is configured differently from the socket of the first plug-in module.

[0042] The second plug-in module is used to insert an external power supply. Setting the sockets of the two plug-in modules to be different can prevent the external power supply from being mistakenly inserted into the first plug-in module, and can also prevent the plug of the drive motor or the plug of the lighting device from being inserted into the second plug-in module.

[0043] In this embodiment, the relay module includes: relay J1, relay J2, relay J3, relay J4, and relay J5.

[0044] Relay J1, relay J2 and relay J3 are respectively arranged corresponding to the three phases of the main circuit; Relays J1, J2 and J3 work as a group, which is dual-purpose. They can be used as a lighting circuit when the control circuit is connected to the lighting circuit, and can also be used as a motor forward drive when the control circuit is connected to the motor circuit.

[0045] A relay J4, one end of which is connected to the input end of the relay J1, and the other end of which is connected to the output end of the relay J3; The relay J5 has one end connected to the input end of the relay J3 and the other end connected to the output end of the relay J1.

[0046] When the control circuit is connected to the motor circuit, the three relays J4, J2 and J5 work as a group and are used as the reverse drive of the motor.

[0047] The method is to switch J1, J2, J3 and J4, J2, J5, replacing the switching method of the three-way contactor in the existing high pole lamp circuit, saving one line and device in the original three-way power supply in the circuit. The high pole lamp integration cost reduction and intensive development are achieved.

[0048] In this embodiment, the input module further includes a conversion switch, and the conversion switch is used to switch the main circuit to connect to the lighting device or the drive motor.

[0049] When the first plug-in module is used to selectively plug in a lighting device and a drive motor, electrical control redundancy is achieved through the single-chip microcomputer by setting a conversion switch; that is, when the drive motor is inserted into the first plug-in module, the conversion switch is switched to a corresponding gear at the same time, so that the main circuit can be connected to the drive motor; on the contrary, when the lighting device is inserted into the first plug-in module, the conversion switch needs to be switched to another gear at the same time, so that the main circuit can be connected to the lighting device.

[0050] In one embodiment, it also includes a communication module connected to the single-chip microcomputer, and the communication module includes a network cable interface and / or a USB interface, which are reserved for line connection and software upgrade for communication and remote control operations.

[0051] In this embodiment, a display module connected to the single chip microcomputer is also included. The display module can synchronously display the same situation of the relay module, the forward and reverse rotation of the drive motor, lighting and other information.

[0052] When using the specific operation: 1. Lighting operation control: ① Insert the lighting device circuit plug into the first plug-in module; ② Close the power switch module to connect the lighting circuit of the lighting device; ③ Adjust the energy-saving and timed switch parameters of the lighting circuit through the input module; ④ The lighting fixture circuit starts and operates according to the set mode; ⑤Confirm that all lighting fixtures are on and in good condition; 2. Light panel lowering maintenance operation control: ① Turn off the power switch module; ② Unplug the lighting device circuit plug on the first plug-in module; ③Replace the wiring plug of the lifting motor; ④Close the power switch module; ⑤Control the lamp panel to rise, confirm that the lamp panel rises and is unhooked, then stop; ⑥When the control lamp panel rises to the designated position or maintenance bracket, it stops; ⑦Turn off the power switch.

[0053] 3. Operation and control of lamp panel rising hook: ① Insert the wiring plug of the lifting motor into the first plug-in module; ② Turn on the power control switch; ③When the control lamp panel rises to the middle of the hook, it stops automatically; ④ Control the lamp panel to slowly descend. When the lamp panel frame enters the hook groove, the action stops. If it is controlled to descend again, the motor current will rise and exceed the set circuit jump value range, then the motor stops, indicating that the hook action is completed.

[0054] ⑤ (When the high pole lamp is required to work) Operate according to the steps of the clear operation control.

[0055] The above three operation steps, except for the plugging and unplugging of the power switch and the plug, can realize wireless remote control or remote control within a radius of 60 meters, and personnel can operate in a safe area. If the on-site wire control operation is completed, remove the remote control cable plug from the switch device.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control and protection switch circuit for a high pole lamp, characterized in that: include: A main circuit, the main circuit comprising a power switch module and a relay module connected in sequence, the input end of the power switch module is used for external power supply, and the output end of the relay module is used for outputting driving power; A control circuit, the control circuit comprising a single-chip microcomputer and an input module connected to the single-chip microcomputer, the single-chip microcomputer being used to control the on / off and switching of the relay module; The rectifier module is connected between the main circuit and the control circuit, and is used for converting low-voltage direct current from the main circuit to provide to the control circuit.

2. The control and protection switch circuit according to claim 1, characterized in that: A combined mutual inductor is also connected to the main circuit, and the combined mutual inductor is connected to the single-chip microcomputer. The single-chip microcomputer is used to control the on and off of the driving motor of the high pole lamp according to the change of the signal collected by the combined mutual inductor.

3. The control and protection switch circuit according to claim 2, characterized in that: The combined transformer comprises a current transformer and a leakage transformer for collecting current signals and leakage signals.

4. The control and protection switch circuit according to claim 1, characterized in that: The output end of the relay module is connected to a first plug-in module, and the first plug-in module is used to connect the lighting device or the driving motor of the high pole lamp.

5. The control and protection switch circuit according to claim 4, characterized in that: The driving motor and the lighting device are both provided with plugs matching the first plug-in module.

6. The control and protection switch circuit according to claim 4, characterized in that: The input end of the power switch module is connected to a second plug-in module, and the socket of the second plug-in module is configured differently from the socket of the first plug-in module.

7. The control and protection switch circuit according to claim 1, characterized in that: The relay module comprises: Relay J1, relay J2 and relay J3 are respectively arranged corresponding to the three phases of the main circuit; A relay J4, one end of which is connected to the input end of the relay J1, and the other end of which is connected to the output end of the relay J3; The relay J5 has one end connected to the input end of the relay J3 and the other end connected to the output end of the relay J1.

8. The control and protection switch circuit according to claim 1, characterized in that: The input module includes a conversion switch, and the conversion switch is used to switch the main circuit to connect to the lighting device or the driving motor.

9. The control and protection switch circuit according to claim 1, characterized in that: It also includes a communication module connected to the single-chip microcomputer, and the communication module includes a network cable interface and / or a USB interface.

10. The control and protection switch circuit according to claim 1, characterized in that: Also included is a display module connected to the single chip microcomputer.

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