Subway energy-saving system

Abstract

The utility model provides a subway energy-saving system, and belongs to the technical field of energy-saving control. The subway energy-saving system comprises an illumination detection module, a voltage control module, a voltage regulation module and an illumination module, the illumination detection module is connected with the input end of the voltage control module; the output end of the voltage control module is connected with the control end of the voltage regulation module; the first end of the lighting module is connected with a live wire, the second end of the lighting module is connected with the first end of the voltage regulation module, and the second end of the voltage regulation module is connected with a zero wire; the illumination detection module is configured to detect the ambient light intensity of the subway platform, and the voltage adjusting module is configured to adjust the working voltage of the illumination module. The energy waste of the subway lighting system can be reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of energy-saving control, and particularly relates to a subway energy-saving system. BACKGROUND

[0002] With the continuous expansion of the scale of urban subways, the energy consumption problem of subway operation is increasingly prominent. Among the many power-consuming devices of the subway, the lighting system, as a part that continuously operates, consumes a large amount of electric energy. The traditional subway lighting system often adopts a fixed brightness setting, and no matter how the ambient light changes on the platform, the lighting lamps always work at a constant power. This leads to excessive light emission of the lighting lamps during the day or in a well-lit period, causing great waste of energy. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present disclosure provide a subway energy-saving system to reduce the energy waste of the subway lighting system.

[0004] Embodiments of the present disclosure provide a subway energy-saving system, comprising: an illumination detection module, a voltage control module, a voltage regulation module and a lighting module;

[0005] The input end of the voltage control module is connected to the illumination detection module, and the output end of the voltage control module is connected to the control end of the voltage regulation module;

[0006] The first end of the lighting module is used for connecting a live wire, the second end of the lighting module is connected to the first end of the voltage regulation module, and the second end of the voltage regulation module is used for connecting a neutral wire;

[0007] The illumination detection module is configured to detect the ambient light intensity of the subway platform, and the voltage regulation module is configured to adjust the working voltage of the lighting module.

[0008] In an exemplary embodiment of the present disclosure, a passenger detection module and a lighting control module are further included;

[0009] The control end of the lighting control module is connected to the passenger detection module, the first end of the lighting control module is used for connecting a live wire, and the second end of the lighting control module is connected to the first end of the lighting module;

[0010] The passenger detection module is configured to detect the passengers on the subway platform.

[0011] In an exemplary embodiment of the present disclosure, the illumination detection module comprises:

[0012] a photodiode U3, a rheostat RP2, a rheostat RP3, a voltage stabilizing tube VD1 and an operational amplifier U2;

[0013] The cathode of the photodiode U3 is connected to the VCC power supply, the anode of the photodiode U3 is grounded through the rheostat RP2, the sliding end of the rheostat RP2 is connected to the inverting input of the operational amplifier U2, the first end of the rheostat RP3 is connected to the VCC power supply, the second end of the rheostat RP3 is grounded, the sliding end of the rheostat RP3 is respectively connected to the non-inverting input of the operational amplifier U2 and the cathode of the voltage stabilizing tube VD1, the anode of the voltage stabilizing tube VD1 is grounded, and the output of the operational amplifier U2 is connected to the input of the voltage control module.

[0014] In an exemplary embodiment of the present disclosure, the voltage control module comprises:

[0015] a triode Q2, a triode Q3, a triode Q4, a triode Q5 and a motor U4;

[0016] The bases of the triode Q2, the triode Q3, the triode Q4 and the triode Q5 are connected to the output of the light detection module, the collector of the triode Q2 is connected to the VDD power supply, the emitter of the triode Q2 is connected to the emitter of the triode Q4, the emitter of the triode Q2 is connected to the first end of the motor U4, and the collector of the triode Q4 is grounded.

[0017] The emitter of the triode Q5 is connected to the VDD power supply, the collector of the triode Q5 is connected to the collector of the triode Q3, the collector of the triode Q5 is connected to the second end of the motor U4, and the emitter of the triode Q3 is grounded; the output shaft of the motor U4 is connected to the control end of the voltage regulation module.

[0018] In an exemplary embodiment of the present disclosure, the voltage regulation module comprises: a rheostat RP1, a capacitor C2 and a bidirectional thyristor Q1;

[0019] The first end of the rheostat RP1 is connected to the second end of the lighting module, the second end of the rheostat RP1 is connected to the zero line through the capacitor C2, the second end of the rheostat RP1 is connected to the control end of the bidirectional thyristor Q1, the first anode of the bidirectional thyristor Q1 is connected to the first end of the rheostat RP1, the second end of the bidirectional thyristor Q1 is used to connect the zero line, and the sliding end of the rheostat RP1 is connected to the output of the voltage control module.

[0020] In an exemplary embodiment of the present disclosure, the passenger detection module comprises: an infrared sensor U7, a resistor R5, a resistor R6, an operational amplifier U5 and a resistor R7;

[0021] The power supply end of the infrared sensor U7 is connected with a VCC power supply, the grounding end of the infrared sensor U7 is grounded, the output end of the infrared sensor U7 is connected with the non-inverting input end of the operational amplifier U5 through the resistor R5, the output end of the operational amplifier U5 is grounded through the resistor R6, the output end of the operational amplifier U5 is connected with the inverting input end of the operational amplifier U5 through the resistor R7, and the output end of the operational amplifier U5 is connected with the control end of the lighting control module.

[0022] In an example embodiment of the present disclosure, the lighting control module comprises a voltage stabilizing tube VD2, a triode Q6 and a relay K1.

[0023] The cathode of the voltage stabilizing tube VD2 is connected with the output end of the operational amplifier U5, the anode of the voltage stabilizing tube VD2 is connected with the base of the triode Q6, the collector of the triode Q6 is connected with a VCC power supply, the emitter of the triode Q6 is connected with the first input end of the relay K1, the second input end of the relay K1 is grounded, the first end of the relay K1 is used for connecting a live wire, and the second end of the relay K1 is connected with the first end of the lighting module.

[0024] The example embodiment of the present disclosure provides a subway energy-saving system, which has the following beneficial effects: the light detection module in the example embodiment of the present disclosure can sense the light intensity of the subway platform environment in real time, and provide a basis for the adjustment of the energy-saving system. The voltage control module can accurately output a control signal according to the light detection result, and control the voltage adjustment module to work. The voltage adjustment module can adjust the working voltage of the lighting module according to the demand, so that the lighting brightness is adapted to the ambient light. When the light is sufficient, the lighting voltage is reduced to avoid excessive lighting and waste of electric energy; when the light is insufficient, the voltage is appropriately increased to guarantee the lighting effect. Therefore, the energy consumption of the subway lighting system is effectively reduced, and the operating cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is a structural schematic diagram of a subway energy-saving system provided by an embodiment of the present disclosure;

[0027] Figure 2 is a circuit diagram of a subway energy-saving system provided by an embodiment of the present disclosure;

[0028] Figure 3 is a circuit diagram of a subway energy-saving system provided by another embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] In order to better understand the present solution, the technical solutions in the embodiments of the present solution will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present solution. Obviously, the described embodiments are only a part of the embodiments of the present solution, rather than all the embodiments. Based on the embodiments in the present solution, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the scope of the present solution.

[0030] The terms "include", "comprise" and any variations thereof in the specification and claims of the present solution and the above-described accompanying drawings mean "including but not limited to", and are intended to cover non-exclusive inclusion, and are not limited to the examples listed in the text. In addition, the terms "first" and "second" and the like are used to distinguish different objects, rather than to describe a specific order.

[0031] The implementations of the present disclosure are described in detail below in conjunction with specific accompanying drawings:

[0032] Figure 1 A structural schematic diagram of a subway energy-saving system is provided for the embodiments of the present disclosure. Referring to Figure 1 The subway energy-saving system comprises an illumination detection module, a voltage control module, a voltage adjustment module and a lighting module.

[0033] The illumination detection module is connected to the input end of the voltage control module, and the output end of the voltage control module is connected to the control end of the voltage adjustment module.

[0034] The first end of the lighting module is used to connect a live wire, the second end of the lighting module is connected to the first end of the voltage adjustment module, and the second end of the voltage adjustment module is used to connect a neutral wire.

[0035] The illumination detection module is configured to detect the ambient light intensity of the subway platform, and the voltage adjustment module is configured to adjust the working voltage of the lighting module.

[0036] In the present embodiment, the illumination detection module is used to detect the ambient light intensity of the subway platform. A photosensitive sensor can be used to detect the ambient light, and the illumination detection module can convert the ambient light intensity of the subway platform into a suitable electrical signal output.

[0037] The voltage control module is used to receive the electrical signal output by the illumination detection module. The voltage control module can control the voltage adjustment module according to the received electrical signal.

[0038] For example, a voltage threshold can be preset. When the ambient light intensity corresponding to the received electrical signal is higher than the voltage threshold, the voltage control module can output a control signal, which can control the voltage regulation module to reduce the operating voltage of the lighting module. When the ambient light intensity is lower than the voltage threshold, a corresponding control signal is output to control the voltage regulation module to increase the operating voltage of the lighting module.

[0039] The voltage regulation module receives control signals from the voltage control module. The voltage regulation module can be a circuit capable of adjusting the output voltage, such as using a variable resistor or thyristor. Based on the received control signals, the voltage regulation module can adjust its internal circuit parameters, thereby changing the operating voltage output to the lighting module.

[0040] For example, when a control signal to reduce voltage is received, the voltage regulation module can reduce the output voltage, thereby reducing the brightness of the lighting module; when a control signal to increase voltage is received, the voltage regulation module can increase the output voltage, thereby increasing the brightness of the lighting module.

[0041] Lighting modules can be various types of lamps (such as LED lamps, fluorescent lamps, etc.). The brightness of a lighting module depends on its operating voltage. When the voltage regulator module outputs a higher voltage, the lighting module receives more electrical energy, resulting in higher brightness; conversely, when the voltage regulator module outputs a lower voltage, the lighting module receives less electrical energy, resulting in lower brightness. In this way, the lighting module can adjust its brightness appropriately according to changes in ambient light intensity under the control of the voltage regulator module, thereby achieving energy savings.

[0042] As can be seen from the above, this embodiment uses a light detection module to sense the ambient light intensity of the subway platform in real time, providing a basis for adjusting the energy-saving system. The voltage control module accurately outputs control signals based on the light detection results, controlling the operation of the voltage regulation module. The voltage regulation module can adjust the operating voltage of the lighting module according to demand, adapting the lighting brightness to the ambient light. When there is sufficient light, the lighting voltage is reduced to avoid excessive lighting and wasting energy; when there is insufficient light, the voltage is appropriately increased to ensure lighting effect. This effectively reduces the energy consumption of the subway lighting system and lowers operating costs.

[0043] like Figure 1 As shown, in one embodiment of this disclosure, a passenger detection module and a lighting control module are also included;

[0044] The passenger detection module is connected to the control terminal of the lighting control module. The first terminal of the lighting control module is used to connect to the live wire, and the second terminal of the lighting module is connected to the first terminal of the lighting module.

[0045] The passenger detection module is configured to detect passengers on the subway platform.

[0046] In the embodiment, the passenger detection module is used to detect passengers on the subway platform, which can be realized by infrared detection technology.

[0047] The passenger detection module can continuously detect whether there are passengers on the subway platform. When passengers are detected, the passenger detection module can send a corresponding signal to the lighting control module. After receiving the signal from the passenger detection module, the lighting control module works according to the signal state.

[0048] When the lighting control module receives the signal that there are passengers, the first end connected to the fire line and the second end connected to the first end of the lighting module remain in the pass-through state, so that the current can flow from the fire line to the lighting module through the lighting control module, allowing the lighting module to work normally and providing lighting for the platform. During the night subway off-peak hours, the passenger detection module cannot detect passengers, and the passenger detection module sends a no-passenger signal to the lighting control module. After receiving this signal, the lighting control module automatically cuts off the connection with the lighting module, thereby cutting off the power supply of the lighting module, effectively avoiding energy waste.

[0049] As can be seen from the above, the passenger detection module can detect passengers on the platform in real time. If passengers are detected, the lighting control module is notified to turn on the lighting to ensure passenger safety. When there are no passengers, the lighting control module cuts off the lighting to avoid unnecessary energy consumption.

[0050] As shown in FIG. 1, Figure 2 In an embodiment of the present disclosure, the light detection module comprises:

[0051] a photodiode U3, a rheostat RP2, a rheostat RP3, a voltage stabilizing tube VD1, and an operational amplifier U2;

[0052] The cathode of the photodiode U3 is connected to the VCC power supply, the anode of the photodiode U3 is grounded through the rheostat RP2, the sliding end of the rheostat RP2 is connected to the inverting input end of the operational amplifier U2, the first end of the rheostat RP3 is connected to the VCC power supply, the second end of the rheostat RP3 is grounded, the sliding end of the rheostat RP3 is respectively connected to the non-inverting input end of the operational amplifier U2 and the cathode of the voltage stabilizing tube VD1, the anode of the voltage stabilizing tube VD1 is grounded, and the output end of the operational amplifier U2 is connected to the input end of the voltage control module.

[0053] In the embodiment, the photodiode U3 can generate different sizes of current according to the light intensity. When the ambient light becomes stronger, the current generated by the photodiode U3 increases; when the light becomes weaker, the current generated decreases. After the current passes through the rheostat RP2, a voltage is formed on the rheostat RP2. By adjusting the sliding end of the rheostat RP2, the voltage input to the inverting input end of the operational amplifier U2 can be changed, and the voltage of the sliding end of the rheostat RP2 reflects the intensity of the ambient light.

[0054] The rheostat RP3 and the voltage stabilizing tube VD1 constitute a voltage stabilizing circuit, the rheostat RP3 divides the voltage of the VCC power supply, and the voltage stabilizing tube VD1 ensures that the voltage of the non-inverting input end of the operational amplifier U2 is stable, thereby providing a fixed reference voltage for the operational amplifier U2.

[0055] The operational amplifier U2 constitutes a comparator, compares the voltage of the non-inverting input end with the reference voltage of the inverting input end, and outputs a high-level signal when the voltage of the non-inverting input end is higher than the reference voltage due to strong ambient light, and outputs a low-level signal when the voltage of the non-inverting input end is lower than the reference voltage due to weak ambient light. The output signal is transmitted to the input end of the voltage control module for subsequent voltage control.

[0056] As shown in FIG. 1, in an embodiment of the present disclosure, the voltage control module comprises: Figure 2

[0057] a triode Q2, a triode Q3, a triode Q4, a triode Q5 and a motor U4;

[0058] The base of the triode Q2, the triode Q3, the triode Q4 and the triode Q5 is connected with the output end of the light detection module, the collector of the triode Q2 is connected with the VDD power supply, the emitter of the triode Q2 is connected with the emitter of the triode Q4, the emitter of the triode Q2 is connected with the first end of the motor U4, and the collector of the triode Q4 is grounded.

[0059] The emitter of the triode Q5 is connected with the VDD power supply, the collector of the triode Q5 is connected with the collector of the triode Q3, the collector of the triode Q5 is connected with the second end of the motor U4, and the emitter of the triode Q3 is grounded; the output shaft of the motor U4 is connected with the control end of the voltage adjusting module.

[0060] In the embodiment, the NPN triode can be used as the triode Q2 and the triode Q3, and the PNP triode can be used as the triode Q4 and the triode Q5.

[0061] The light detection module can output different electrical signals according to the intensity of the ambient light. When the ambient light is strong, the light detection module outputs a high-level signal; when the ambient light is weak, the light detection module outputs a low-level signal. The voltage control module receives the electrical signal, controls the forward and reverse rotation of the motor U4 according to the high and low levels of the signal, and adjusts the voltage adjusting module.

[0062] ​When the light is strong, the light detection module outputs a high level, and the high level signal makes the triode Q2 and the triode Q3 conduct. The VDD power supply flows to the first end of the motor U4 through the triode Q2, and then is grounded through the triode Q3. The high level signal makes the triode Q4 and the triode Q5 cut off. At this time, the current direction formed between the two ends of the motor U4 makes the motor U4 rotate forward. When the motor U4 rotates forward, the output shaft thereof can adjust the voltage adjustment module, so that the working voltage of the lighting module is reduced, thereby achieving energy saving.

[0063] When the light is weak, the light detection module outputs a low level, and the low level signal makes the triode Q2 and the triode Q3 cut off, and makes the triode Q4 and the triode Q5 conduct. At this time, the current direction formed between the two ends of the motor U4 is opposite to that when the light is strong, and the motor U4 reverses. When the motor U4 reverses, the output shaft thereof adjusts the voltage adjustment module, so that the working voltage of the lighting module is increased, thereby ensuring that the platform has sufficient lighting.

[0064] As can be seen from the above, the voltage control module controls the forward and reverse rotation of the motor U4 according to the electrical signal output by the light detection module through the conduction and cut-off states of the triode Q2, the triode Q3, the triode Q4 and the triode Q5. The forward and reverse rotation of the motor U4 adjusts the voltage adjustment module through the output shaft, thereby dynamically adjusting the working voltage of the lighting module, achieving the purpose of energy saving and meeting the lighting demand.

[0065] As shown in FIG. 1, Figure 2 In an embodiment of the present disclosure, the voltage adjustment module comprises a variable resistor RP1, a capacitor C2 and a bidirectional thyristor Q1.

[0066] The first end of the variable resistor RP1 is connected to the second end of the lighting module, the second end of the variable resistor RP1 is connected to the zero line through the capacitor C2, the second end of the variable resistor RP1 is connected to the control end of the bidirectional thyristor Q1, the first anode of the bidirectional thyristor Q1 is connected to the first end of the variable resistor RP1, the second end of the bidirectional thyristor Q1 is used to connect the zero line, and the sliding end of the variable resistor RP1 is connected to the output end of the voltage control module.

[0067] In the present embodiment, a transmission structure can be arranged between the output shaft of the motor U4 and the sliding end of the variable resistor RP1, and the movement of the sliding end of the variable resistor RP1 can be realized through the forward and reverse rotation of the motor U4, thereby realizing the adjustment of the resistance value of the variable resistor RP1. For example, when the sliding end slides to the right, the access resistance increases, so that the voltage between the two ends of the lighting module decreases; on the contrary, when the sliding end slides to the left, the access resistance decreases, so that the voltage between the two ends of the lighting module increases. The capacitor C2 plays a role of filtering and phase shifting, can filter out high-frequency interference signals in the circuit, and makes the circuit work more stably; at the same time, by changing the phase relationship of voltage and current, the bidirectional thyristor Q1 is used to realize the adjustment of the voltage.

[0068] When the AC current is in the positive half-cycle, the voltage charges capacitor C2 through the variable resistor RP1. When the voltage across capacitor C2 reaches the conduction threshold of the bidirectional thyristor Q1, Q1 conducts. At this point, the voltage passes through the lighting module and Q1 to the neutral wire. The same logic applies when the AC current is in the negative half-cycle. By adjusting the resistance of RP1, the conduction angle of Q1 can be changed, thus achieving AC voltage regulation.

[0069] As can be seen from the above, the light detection module detects the ambient light intensity and outputs a corresponding electrical signal to the voltage control module. The voltage control module controls the forward and reverse rotation of motor U4 based on the electrical signal, which in turn moves the sliding contact of rheostat RP1. The change in the resistance of rheostat RP1, together with capacitor C2, controls the conduction angle of the bidirectional thyristor Q1, ultimately adjusting the input voltage of the lighting module to adapt to different lighting requirements, achieving energy saving and meeting lighting effect requirements.

[0070] like Figure 3 As shown, in one embodiment of this disclosure, the passenger detection module includes: an infrared sensor U7, a resistor R5, a resistor R6, an operational amplifier U5, and a resistor R7;

[0071] The power supply terminal of infrared sensor U7 is connected to VCC power supply, the ground terminal of infrared sensor U7 is grounded, the output terminal of infrared sensor U7 is connected to the non-inverting input terminal of operational amplifier U5 through resistor R5, the output terminal of operational amplifier U5 is grounded through resistor R6, the output terminal of operational amplifier U5 is connected to the inverting input terminal of operational amplifier U5 through resistor R7, and the output terminal of operational amplifier U5 is connected to the control terminal of lighting control module.

[0072] In this embodiment, the infrared sensor U7 detects changes in the surrounding environment by receiving infrared light. The human body can emit infrared signals. When there are passengers on the platform, the infrared sensor U7 can detect these infrared signals and convert them into a corresponding electrical signal output, although this signal is relatively weak.

[0073] Resistors R5 and R6, operational amplifier U5, and resistor R7 constitute an amplifier circuit. This circuit amplifies the weak signal input to the non-inverting input of operational amplifier U5. The amplified signal is output from the output of operational amplifier U5. When a passenger is detected, the amplified signal reaches a certain threshold, triggering the lighting control module to turn on the lighting module and provide illumination to the platform. When no passenger is detected, the output signal falls below the threshold, and the lighting control module cuts off the power to the lighting module to achieve energy saving.

[0074] like Figure 3 As shown, in one embodiment of this disclosure, the lighting control module includes: a Zener diode VD2, a transistor Q6, and a relay K1;

[0075] The cathode of the voltage stabilizing tube VD2 is connected to the output of the operational amplifier U5, the anode of the voltage stabilizing tube VD2 is connected to the base of the triode Q6, the collector of the triode Q6 is connected to the VCC power supply, the emitter of the triode Q6 is connected to the first input of the relay K1, the second input of the relay K1 is grounded, and the first end of the relay K1 is used for connecting the live wire, and the second end of the relay K1 is connected to the first end of the lighting module.

[0076] In the embodiment, when it is detected that there is a passenger, the voltage signal output by the operational amplifier is greater than the breakdown voltage of the voltage stabilizing tube VD2, and the voltage stabilizing tube VD2 is turned on; when it is detected that there is no passenger, the voltage signal output by the operational amplifier is less than the breakdown voltage of the voltage stabilizing tube VD2, and the voltage stabilizing tube VD2 is turned off.

[0077] When the passenger detection module detects that there is a passenger, the voltage signal output by the operational amplifier U5 is greater than the breakdown voltage of the voltage stabilizing tube VD2. The voltage stabilizing tube VD2 is in the on state. The voltage stabilizing tube VD2 transmits the voltage signal output by the operational amplifier U5 to the base of the triode Q6, so that the triode Q6 meets the on condition and is turned on. After the triode Q6 is turned on, a path is formed between the collector and the emitter of the triode Q6, and the current of the VCC power supply can flow to the first input of the relay K1 through the triode Q6. At this time, there is current passing through the relay K1, and the electromagnetic coil in the relay K1 generates a magnetic field, so that the contacts of the relay K1 are attracted. The first end of the relay K1 is connected to the live wire, and the second end is connected to the first end of the lighting module. After the contacts are attracted, the live wire is connected to the lighting module, the lighting module is powered on and emits light, and the platform is provided with illumination.

[0078] When the passenger detection module detects that there is no passenger, the voltage signal output by the operational amplifier U5 is less than the breakdown voltage of the voltage stabilizing tube VD2. The voltage stabilizing tube VD2 is in the off state. The triode Q6 does not meet the on condition and is in the off state. A path cannot be formed between the collector and the emitter of the triode Q6. The contacts of the relay K1 are in the off state. The connection between the live wire and the lighting module is cut off, and the lighting module stops working, thereby avoiding waste of energy.

[0079] In the embodiment, in order to improve the stability and accuracy of passenger detection, multiple lighting control modules can be provided, and the outputs of the multiple lighting control modules are subjected to logical calculation of AND. As long as one lighting control module detects that there is a passenger, the platform can be provided with illumination.

[0080] From the above, it can be concluded that the lighting control module of the embodiment can realize intelligent control of the power supply of the lighting module according to the output signal of the passenger detection module through the cooperative work of the voltage stabilizing tube VD2, the triode Q6 and the relay K1.

[0081] The above examples are only used to illustrate the technical solutions of the present disclosure, rather than limit them; although the present disclosure has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A subway energy saving system, characterized by, The application relates to a lighting control device for a subway platform, which comprises a light detection module, a voltage control module, a voltage regulation module and a lighting module. The light detection module is connected to the input end of the voltage control module, and the output end of the voltage control module is connected to the control end of the voltage regulation module. The first end of the lighting module is used for connecting a live wire, the second end of the lighting module is connected to the first end of the voltage regulation module, and the second end of the voltage regulation module is used for connecting a zero line. The light detection module is configured to detect the ambient light intensity of a subway platform, and the voltage regulation module is configured to regulate the working voltage of the lighting module. The application further comprises a passenger detection module and a lighting control module.

2. The subway energy saving system of claim 1, wherein, The passenger detection module is connected to the control end of the lighting control module, the first end of the lighting control module is used for connecting a live wire, and the second end of the lighting control module is connected to the first end of the lighting module. The passenger detection module is configured to detect passengers on a subway platform. The light detection module comprises a photodiode U3, a variable resistor RP2, a variable resistor RP3, a voltage stabilizing tube VD1 and an operational amplifier U2.

3. The subway energy saving system of claim 1, wherein, The cathode of the photodiode U3 is connected to a VCC power supply, the anode of the photodiode U3 is grounded through the variable resistor RP2, the sliding end of the variable resistor RP2 is connected to the inverting input end of the operational amplifier U2, the first end of the variable resistor RP3 is connected to a VCC power supply, the second end of the variable resistor RP3 is grounded, the sliding end of the variable resistor RP3 is respectively connected to the non-inverting input end of the operational amplifier U2 and the cathode of the voltage stabilizing tube VD1, the anode of the voltage stabilizing tube VD1 is grounded, and the output end of the operational amplifier U2 is connected to the input end of the voltage control module. The voltage control module comprises a triode Q2, a triode Q3, a triode Q4, a triode Q5 and a motor U4. The bases of the triode Q2, the triode Q3, the triode Q4 and the triode Q5 are all connected to the output end of the light detection module, the collector of the triode Q2 is connected to a VDD power supply, the emitter of the triode Q2 is connected to the emitter of the triode Q4, the emitter of the triode Q2 is connected to the first end of the motor U4, and the collector of the triode Q4 is grounded.

4. The subway energy saving system of claim 1, wherein, The emitter of the triode Q5 is connected to a VDD power supply, the collector of the triode Q5 is connected to the collector of the triode Q3, the collector of the triode Q5 is connected to the second end of the motor U4, and the emitter of the triode Q3 is grounded; the output shaft of the motor U4 is connected to the control end of the voltage regulation module. The voltage regulation module comprises a variable resistor RP1, a capacitor C2 and a bidirectional thyristor Q1. The first end of the variable resistor RP1 is connected to the second end of the lighting module, the second end of the variable resistor RP1 is connected to a zero line through the capacitor C2, the second end of the variable resistor RP1 is connected to the control end of the bidirectional thyristor Q1, the first anode of the bidirectional thyristor Q1 is connected to the first end of the variable resistor RP1, the second end of the bidirectional thyristor Q1 is used for connecting a zero line, and the sliding end of the variable resistor RP1 is connected to the output end of the voltage control module. ​ 5. The subway energy saving system of claim 1, wherein, ​ ​ 6. The subway energy saving system of claim 2, wherein, The passenger detection module comprises: an infrared sensor U7, a resistor R5, a resistor R6, an operational amplifier U5 and a resistor R7; The power supply end of the infrared sensor U7 is connected to a VCC power supply, the grounding end of the infrared sensor U7 is grounded, the output end of the infrared sensor U7 is connected to the non-inverting input end of the operational amplifier U5 through the resistor R5, the output end of the operational amplifier U5 is grounded through the resistor R6, the output end of the operational amplifier U5 is connected to the inverting input end of the operational amplifier U5 through the resistor R7, and the output end of the operational amplifier U5 is connected to the control end of the lighting control module.

7. The subway energy saving system of claim 6, wherein, The lighting control module comprises: a voltage stabilizing tube VD2, a triode Q6 and a relay K1; The cathode of the voltage stabilizing tube VD2 is connected to the output end of the operational amplifier U5, the anode of the voltage stabilizing tube VD2 is connected to the base of the triode Q6, the collector of the triode Q6 is connected to a VCC power supply, the emitter of the triode Q6 is connected to the first input end of the relay K1, the second input end of the relay K1 is grounded, the first end of the relay K1 is used for connecting a live wire, and the second end of the relay K1 is connected to the first end of the lighting module.

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