CN211955770U - Signal lamp state detection device capable of collecting multiple states - Google Patents
Signal lamp state detection device capable of collecting multiple states Download PDFInfo
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- CN211955770U CN211955770U CN202020346223.4U CN202020346223U CN211955770U CN 211955770 U CN211955770 U CN 211955770U CN 202020346223 U CN202020346223 U CN 202020346223U CN 211955770 U CN211955770 U CN 211955770U
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Abstract
The utility model provides a can gather signal lamp state detection device of multiple state, include: the power-down control circuit comprises an AC-DC circuit, an MCU, a communication module, a power-down storage module, a voltage and current acquisition circuit and an operation panel; the AC-DC circuit comprises an AC-DC power supply circuit and a three-way power failure detection circuit; the input end of the AC-to-DC power supply circuit is respectively connected with a red light signal line R, a yellow light signal line Y and a green light signal line G, the output end of the AC-to-DC power supply circuit outputs direct current power supply voltage, and the output end of the AC-to-DC power supply circuit is connected with an energy storage element; the input end of each circuit breaking detection circuit is respectively connected with the signal line of the corresponding color lamp, and the output end of each circuit breaking detection circuit is connected with the corresponding I/O port of the MCU; the red light signal line R, the yellow light signal line Y and the green light signal line G are respectively connected with a red light, a yellow light and a green light in the signal light group through the voltage and current acquisition sub-circuits; the utility model discloses can detect out the multiple state information and the phase place outage trouble of signal lamp.
Description
Technical Field
The utility model belongs to intelligent transportation control field, especially a signal lamp state detection device.
Background
At present, the fault detection of the traffic signal lamp mainly comprises video detection and electrical parameter detection. The video detection is more intuitive and reliable, the state of the signal lamp can be observed manually, the method is relatively accurate, but the cost is relatively high, and the observation range is influenced when the special weather is met.
The electrical parameter detection is a development direction of intelligent detection of signal lamps at present.
Disclosure of Invention
To exist not enough among the prior art, the utility model provides a can gather signal lamp state detection device of multiple state can detect out multiple state information and the phase place outage trouble of signal lamp. The utility model adopts the technical proposal that:
a signal lamp state detection device capable of acquiring multiple states comprises:
the power-down control circuit comprises an AC-DC circuit, an MCU, a communication module, a power-down storage module, a voltage and current acquisition circuit and an operation panel;
the AC-DC circuit comprises an AC-DC power supply circuit and a three-way power failure detection circuit; the input end of the AC-to-DC power supply circuit is respectively connected with a red light signal line R, a yellow light signal line Y and a green light signal line G, the output end of the AC-to-DC power supply circuit outputs direct current power supply voltage, and the output end of the AC-to-DC power supply circuit is connected with an energy storage element;
the input end of each circuit breaking detection circuit is respectively connected with the signal line of the corresponding color lamp, and the output end of each circuit breaking detection circuit is connected with the corresponding I/O port of the MCU;
the voltage and current acquisition circuit comprises three voltage and current acquisition sub-circuits; the red light signal line R, the yellow light signal line Y and the green light signal line G are respectively connected with a red light, a yellow light and a green light in the signal light group through the voltage and current acquisition sub-circuits; the output of each voltage and current collecting sub-circuit is respectively connected with the corresponding ADC port of the MCU;
the MCU is connected with the communication module and is communicated with the upper computer through the communication module;
the MCU is connected with the power-down storage module; the power failure storage module is used for storing set parameters, signal lamp state information and phase power failure information;
the MCU is connected with an operation panel, and the operation panel is used for displaying the running condition of the detection device and setting parameters.
Furthermore, the MCU is also connected with an expansion interface, and is connected with an expansion module through the expansion interface.
Furthermore, the expansion module adopts a temperature and humidity sensor.
Further, the AC-to-DC power supply circuit comprises a full-bridge rectifying circuit, an AC/DC voltage reduction circuit and an energy storage capacitor C1; the input end of the full-bridge rectification circuit is connected with a red light signal line R, a yellow light signal line Y and a green light signal line G, the output end of the full-bridge rectification circuit is connected with the input end of the AC/DC voltage reduction circuit, and an energy storage capacitor C1 is connected between the positive output end and the negative output end of the AC/DC voltage reduction circuit.
Further, the power failure detection circuit comprises resistors R1 and R2, a bidirectional TVS (transient voltage suppressor) DT1, an optical coupler U1 and a capacitor C2;
one end of the resistor R1 is connected with a signal wire of a corresponding color lamp, the other end of the resistor R1 is connected with one end of the bidirectional TVS tube DT1, the other end of the bidirectional TVS tube DT1 is connected with one input end of the optocoupler U1, and the other input end of the optocoupler U1 is connected with a zero line N; the collector of the output end of the optocoupler U1 is connected with a power supply voltage VCC, the emitter of the output end of the optocoupler U1 is connected with one end of a resistor R2 and one end of a capacitor C2 and feeds a power-off signal back to the MCU, and the other end of the resistor R2 and the other end of the capacitor C2 are grounded.
The utility model has the advantages that:
1) the signal lamp state detection device adopts the internet of things module NB-IoT module to perform information interaction with the remote monitoring platform, the detection device can actively upload information, and the remote monitoring platform can also send the information to realize bidirectional control.
2) The signal lamp state detection device can be arranged at a plurality of positions, and can realize more comprehensive control on each signal lamp of the intersection by matching with a remote monitoring platform.
3) The state information of the signal lamp with the failure proportion of the LED tube core is increased, and managers can predict the fault change trend of the signal lamp in advance and replace the signal lamp with hidden danger as soon as possible.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is a schematic block diagram of the AC-to-DC power supply circuit of the present invention.
Fig. 3 is a schematic diagram of the power-off detection circuit of the present invention.
Detailed Description
The invention is further described with reference to the following specific drawings and examples.
In one embodiment, a signal lamp state detection device capable of collecting a plurality of states includes:
the power-down control circuit comprises an AC-DC circuit, an MCU, a communication module, a power-down storage module, a voltage and current acquisition circuit and an operation panel; the system can further comprise an expansion interface;
the AC-DC circuit comprises an AC-DC power supply circuit and a three-way power failure detection circuit; the input end of the AC-to-DC power supply circuit is respectively connected with a red light signal line R, a yellow light signal line Y and a green light signal line G, and the output end of the AC-to-DC power supply circuit outputs direct-current power supply voltage for supplying power to the rest parts in the signal lamp state detection device;
the output end of the AC-to-DC power supply circuit is connected with an energy storage element, so that power supply can be maintained for 2-3 seconds when a phase power failure occurs, and phase power failure information can be stored in a power failure storage module in the time;
the input end of each circuit breaking detection circuit is respectively connected with the signal line of the corresponding color lamp, and the output end of each circuit breaking detection circuit is connected with the corresponding I/O port of the MCU; the power-off detection circuit can feed back a power-off signal of the signal lamp to the MCU;
the red light signal line R, the yellow light signal line Y and the green light signal line G are connected out of the traffic signal controller, and the voltage and current acquisition circuit comprises three voltage and current acquisition sub-circuits; the red light signal line R, the yellow light signal line Y and the green light signal line G are respectively connected with a red light, a yellow light and a green light in the signal light group through the voltage and current acquisition sub-circuits; the output of each voltage and current collecting sub-circuit is respectively connected with the corresponding ADC port of the MCU;
the MCU is connected with the communication module, is communicated with the upper computer through the communication module and can send fault information of the signal lamp to the upper computer; in the embodiment, the communication module adopts an NB-IoT module and adopts a CoAP protocol to access the remote monitoring platform;
the MCU is connected with the power-down storage module; the power failure storage module can store set parameter information such as a lamp group ID, a reference power value and the like, and can also store signal lamp state information and phase power failure information;
the MCU is connected with an operation panel, and the operation panel can adopt a touch screen; the operation panel is used for displaying the running condition of the detection device and setting parameters, such as lamp group ID and reference power value; the set parameters are stored in a power-down storage module;
the MCU is connected with the expansion interface, the expansion interface can adopt an IIC module interface so as to be connected with various expansion modules, for example, a temperature and humidity sensor arranged at the signal lamp group is connected, and the temperature and the environment humidity of the signal lamp group during working can be obtained; the expansion module is not limited to a temperature and humidity sensor and can be determined according to the requirement;
as shown in FIG. 2, in one embodiment, the AC-to-DC power supply circuit comprises a full bridge rectification circuit, an AC/DC voltage reduction circuit and an energy storage capacitor C1; the input end of the full-bridge rectification circuit is connected with a red light signal line R, a yellow light signal line Y and a green light signal line G, the output end of the full-bridge rectification circuit is connected with the input end of the AC/DC voltage reduction circuit, and an energy storage capacitor C1 is connected between the positive output end and the negative output end of the AC/DC voltage reduction circuit;
as shown in fig. 3, in an embodiment, the all-circuit power failure detection circuit includes resistors R1, R2, a bidirectional TVS transistor DT1, an optical coupler U1, and a capacitor C2;
one end of the resistor R1 is connected with a signal wire of a corresponding color lamp, the other end of the resistor R1 is connected with one end of the bidirectional TVS tube DT1, the other end of the bidirectional TVS tube DT1 is connected with one input end of the optocoupler U1, and the other input end of the optocoupler U1 is connected with a zero line N; the collector of the output end of the optocoupler U1 is connected with a power supply voltage VCC, the emitter of the output end of the optocoupler U1 is connected with one end of a resistor R2 and one end of a capacitor C2, a power-OFF signal (a power-OFF signal R _ OFF of a red light in the example of fig. 3) is fed back to the MCU, and the other end of the resistor R2 and the other end of the capacitor C2 are grounded.
Phase power-off detection principle: when a certain path of the traffic signal controller can not output 220v voltage, a certain phase of the signal lamp group and the signal lamp state detection device are in a power-off state in the phase; in the presence of the energy storage capacitor C1, the MCU can obtain a power-off signal through a corresponding power-off detection circuit, then record phase power-off information into a power-off storage module, read the phase power-off information in the power-on initialization process when the power supply of the next phase is normal, and then report the phase power-off fault to a remote monitoring platform;
signal lamp state detection principle: working voltage and working current of each color lamp (red lamp, yellow lamp or green lamp) in the signal lamp group can be respectively obtained through three voltage and current acquisition sub-circuits in the voltage and current acquisition circuit; therefore, a real-time power value can be obtained through calculation, and the failure proportion of the LED tube core in each color lamp can be obtained by comparing the real-time power value with a reference power value;
MCU just can obtain signal lamp status information through three routes power failure detection circuitry's output signal and three routes voltage current acquisition subcircuit's output signal, includes: undervoltage, overvoltage, undercurrent, overcurrent, signal lamp LED tube core failure proportion, state conflict and the like; the state information of the signal lamps can be reported to a remote monitoring platform;
finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a signal lamp state detection device that can gather multiple state which characterized in that includes:
the power-down control circuit comprises an AC-DC circuit, an MCU, a communication module, a power-down storage module, a voltage and current acquisition circuit and an operation panel;
the AC-DC circuit comprises an AC-DC power supply circuit and a three-way power failure detection circuit; the input end of the AC-to-DC power supply circuit is respectively connected with a red light signal line R, a yellow light signal line Y and a green light signal line G, the output end of the AC-to-DC power supply circuit outputs direct current power supply voltage, and the output end of the AC-to-DC power supply circuit is connected with an energy storage element;
the input end of each circuit breaking detection circuit is respectively connected with the signal line of the corresponding color lamp, and the output end of each circuit breaking detection circuit is connected with the corresponding I/O port of the MCU;
the voltage and current acquisition circuit comprises three voltage and current acquisition sub-circuits; the red light signal line R, the yellow light signal line Y and the green light signal line G are respectively connected with a red light, a yellow light and a green light in the signal light group through the voltage and current acquisition sub-circuits; the output of each voltage and current collecting sub-circuit is respectively connected with the corresponding ADC port of the MCU;
the MCU is connected with the communication module and is communicated with the upper computer through the communication module;
the MCU is connected with the power-down storage module; the power failure storage module is used for storing set parameters, signal lamp state information and phase power failure information;
the MCU is connected with an operation panel, and the operation panel is used for displaying the running condition of the detection device and setting parameters.
2. The signal lamp status detecting apparatus capable of collecting a plurality of statuses according to claim 1,
the MCU is also connected with an expansion interface and is connected with an expansion module through the expansion interface.
3. The signal lamp status detecting apparatus capable of collecting a plurality of statuses according to claim 2,
the expansion module adopts a temperature and humidity sensor.
4. The signal lamp status detecting apparatus capable of collecting a plurality of statuses according to claim 1,
the AC-DC power supply circuit comprises a full-bridge rectifying circuit, an AC/DC voltage reduction circuit and an energy storage capacitor C1; the input end of the full-bridge rectification circuit is connected with a red light signal line R, a yellow light signal line Y and a green light signal line G, the output end of the full-bridge rectification circuit is connected with the input end of the AC/DC voltage reduction circuit, and an energy storage capacitor C1 is connected between the positive output end and the negative output end of the AC/DC voltage reduction circuit.
5. The signal lamp status detecting apparatus capable of collecting a plurality of statuses according to claim 1,
the power failure detection circuit comprises resistors R1 and R2, a bidirectional TVS (transient voltage suppressor) DT1, an optocoupler U1 and a capacitor C2;
one end of the resistor R1 is connected with a signal wire of a corresponding color lamp, the other end of the resistor R1 is connected with one end of the bidirectional TVS tube DT1, the other end of the bidirectional TVS tube DT1 is connected with one input end of the optocoupler U1, and the other input end of the optocoupler U1 is connected with a zero line N; the collector of the output end of the optocoupler U1 is connected with a power supply voltage VCC, the emitter of the output end of the optocoupler U1 is connected with one end of a resistor R2 and one end of a capacitor C2 and feeds a power-off signal back to the MCU, and the other end of the resistor R2 and the other end of the capacitor C2 are grounded.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735158A (en) * | 2020-12-29 | 2021-04-30 | 武汉微创光电股份有限公司 | Signal lamp red-yellow-green lamp fault monitoring method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735158A (en) * | 2020-12-29 | 2021-04-30 | 武汉微创光电股份有限公司 | Signal lamp red-yellow-green lamp fault monitoring method and device |
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