CN115311884A - Novel traffic signal lamp fault detection system - Google Patents
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Abstract
The application discloses novel traffic signal lamp fault detection system relates to electron measurement technical field. The system comprises a power supply module, a rectifier circuit module, a current transformer module, a digital control analog switch module, a shaping circuit module, a single chip microcomputer and a central node; the rectifying circuit module rectifies the accessed signal lamp circuit; the current transformer module is electrically connected with the rectifying circuit module and is used for collecting the consumption current of the rectified signal lamp circuit; the current transformer module is electrically connected with the digital control analog switch module, and the digital control analog switch module switches signals of the signal lamp circuit; the digital control analog switch module is electrically connected with the shaping circuit module, and the shaping circuit module shapes the signals switched by the digital control analog switch module to form shaped signals; the single chip microcomputer receives the shaping signal; the central node is electrically connected with the singlechip. By adopting the system, the aim of timely and accurately acquiring the working state of the traffic signal lamp is fulfilled.
Description
Technical Field
The application relates to the technical field of electronic measurement, in particular to a novel traffic signal lamp fault detection system.
Background
Traffic lights are generally composed of red, green, and yellow lights. The red light represents no traffic, the green light represents permission, the yellow light represents warning, color signals which are changed alternately at specified time are used for assigning road traffic right to drivers and pedestrians, controlling the traffic stop and the steering, indicating the stopping, the advancing and the attention of the vehicles and the pedestrians, and the traffic light is usually arranged at a crossing or other special places and plays a role in guiding traffic. However, any device has a certain lifespan or service life, and its reliability index is expressed as mean time between failures. When a traffic signal lamp breaks down, if the maintenance support personnel cannot be informed in time, a traffic accident can be caused, and even a major traffic accident can happen.
At present, the signal lamps of urban road intersections in China are controlled in a centralized control mode mostly, namely, a traffic signal machine is arranged at one intersection, an independent control signal line is arranged from the signal machine to each signal lamp, and the traffic signal machine controls the on and off of the corresponding signal lamp through the control signal lines. During practical use, the centralized control system is high in construction difficulty, high in signal cable laying cost and difficult in signal lamp working state detection, and cannot detect the working states of the signal lamps respectively, so that whether the signal lamps break down or not cannot be known in time.
Therefore, a device which is simple to install, reasonable in design and capable of timely and accurately knowing the working state of the traffic signal lamp is required to be found, so that maintenance management personnel can timely know whether the signal lamps are in a fault state or not.
Disclosure of Invention
The embodiment of the application provides a novel traffic signal lamp fault detection system, solves the problems that a traffic signal lamp fault detection device in the prior art is complex in structure, inconvenient to install and unsatisfactory in detection effect, and achieves the purpose of timely and accurately acquiring the working state of a traffic signal lamp.
The embodiment of the invention provides a novel traffic signal lamp fault detection system which comprises a power supply module, a rectifier circuit module, a current transformer module, a digital control analog switch module, a shaping circuit module, a single chip microcomputer and a central node, wherein the power supply module is connected with the rectifier circuit module;
the rectifying circuit module rectifies the accessed signal lamp circuit;
the current transformer module is electrically connected with the rectifying circuit module and is used for collecting the rectified consumption current of the signal lamp circuit;
the current transformer module is electrically connected with the digital control analog switch module, and the digital control analog switch module switches signals of the signal lamp circuit;
the digital control analog switch module is electrically connected with the shaping circuit module, and the shaping circuit module shapes the signals switched by the digital control analog switch module to form shaped signals;
the single chip microcomputer receives the shaping signal, judges whether the current value of the shaping signal is normal or not and sends information to the central node;
the central node is electrically connected with the single chip microcomputer and analyzes and integrates the fault state of the signal lamp of the intersection according to the logic address of the signal lamp;
and the power supply module supplies power to the traffic signal lamp fault detection system.
Furthermore, the system also comprises an acquisition circuit module, and the acquisition circuit module acquires the voltage of the power supply module and the temperature information in the traffic signal lamp fault detection system.
Furthermore, the system also comprises a display module, the acquisition circuit module is electrically connected with the display module, and the acquisition circuit module displays acquired information through the display module.
Furthermore, the acquisition circuit module comprises three groups of acquisition circuit sub-modules, each group of acquisition circuit sub-module comprises two resistors connected in series, and a circuit to be acquired is connected between the two resistors in parallel.
Furthermore, the rectifier circuit module comprises a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a seventh diode and an eighth diode;
the first diode and the second diode are connected in series to form a first group of rectifier circuit sub-modules, the third diode and the fourth diode are connected in series to form a second group of rectifier circuit sub-modules, the fifth diode and the sixth diode are connected in series to form a third group of rectifier circuit sub-modules, and the seventh diode and the eighth diode are connected in series to form a fourth group of rectifier circuit sub-modules; the first group of rectifying circuit sub-modules, the second group of rectifying circuit sub-modules, the third group of rectifying circuit sub-modules and the fourth group of rectifying circuit sub-modules are connected in parallel.
Further, the current transformer module comprises three groups of current transformer sub-modules;
the access ends of the three groups of current transformer sub-modules are respectively connected with the output ends of three groups of rectifier circuit sub-modules in the rectifier circuit module;
and the output ends of the three groups of current transformer sub-modules are respectively connected with corresponding pins on the digital control analog switch module.
Further, the shaping circuit module comprises a first operational amplifier, a second operational amplifier and a third operational amplifier;
the inverting input end of the first operational amplifier is connected with the output end of the digital control analog switch module, the non-inverting input end of the first operational amplifier is grounded, the pin of the positive electrode of the power supply is connected with the IC1B, and the output ends of the first operational amplifier are respectively connected with the positive electrode of the ninth diode and the negative electrode of the twelfth diode;
the inverting input end of the second operational amplifier is connected with the anode of the twelfth diode, the non-inverting input end of the second operational amplifier is connected with the cathode of the ninth diode, the pin of the anode of the power supply is connected with the IC1A, the pin of the cathode of the power supply is grounded, and the output end of the second operational amplifier is connected with the non-inverting input end of the third operational amplifier;
and the inverting input end of the third operational amplifier is grounded, the positive pin of the power supply is connected with the IC1C, and the output end of the third operational amplifier is connected with the singlechip.
Furthermore, an eleventh resistor is connected between the inverting input end of the first operational amplifier and the anode of the twelfth diode; and a fifth resistor is connected between the inverting input end of the first operational amplifier and the negative electrode of the ninth diode.
Furthermore, a twelfth resistor is connected between the inverting input end of the second operational amplifier and the anode of the twelfth diode; and a tenth resistor is connected between the inverting input end of the second operational amplifier and the output end of the second operational amplifier.
Furthermore, a ninth resistor is connected between the non-inverting input terminal of the third operational amplifier and the output terminal of the second operational amplifier; and a seventh resistor is connected between the inverting input end of the third operational amplifier and the output end of the third operational amplifier.
One or more technical schemes provided in the embodiments of the present invention have at least the following technical effects or advantages:
the invention provides a novel traffic signal lamp fault detection system, which supplies power to the detection system of the scheme through a power supply module, then connects a circuit of a traffic signal lamp into the system, collects the consumed current of the rectified signal lamp circuit through a current transformer after rectification through a rectification circuit module, shapes the collected current through a shaping circuit module through a digital control analog switch module, completes switching and shaping of three paths of traffic signal lamp signals, finally transmits the signal shaped by each path of signal lamp to a single chip microcomputer to complete digital-to-analog conversion, compares the current signal collected in real time with a normal current value for realizing storage through the single chip microcomputer, judges the working condition of each path of signal lamp, and sends the final result, namely a fault code, to a central node, and the central node analyzes and integrates the fault state of the intersection signal lamp according to the logic address of the lamp. The traffic signal lamp fault detection system effectively solves the problems of complex structure, inconvenient installation and unsatisfactory detection effect of the traffic signal lamp fault detection device in the prior art, and achieves the purpose of timely and accurately acquiring the working state of the traffic signal lamp.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a traffic signal light detection system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a rectifying circuit module according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a digitally controlled analog switch module according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a current transformer module provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of an acquisition circuit module according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a shaping circuit module according to an embodiment of the present disclosure.
An icon: 1. an incoming terminal; 2. a power supply module; 3. a rectifier circuit module; 4. a current transformer module; 5. a digital control analog switch module; 6. a shaping circuit module; 7. a single chip microcomputer; 8. an outlet terminal; 9. a central node; 10. a first operational amplifier; 11. a second operational amplifier; 12. a third operational amplifier; r1, a first resistor; r3 and a third resistor; r4, a fourth resistor; r5 and a fifth resistor; r6 and a sixth resistor; r7 and a seventh resistor; r8 and an eighth resistor; r9 and a ninth resistor; r10, tenth resistance; r11 and an eleventh resistor; r12 and a twelfth resistor; r13 and a thirteenth resistor; r14, fourteenth resistance; r15, a fifteenth resistor; r18, eighteenth resistor; r19, nineteenth resistor; r22 and a twenty-second resistor; d1, a first diode; d2, a second diode; d3, a third diode; d4, a fourth diode; d5, a fifth diode; d6, a sixth diode; d7, a seventh diode; d8, an eighth diode; d9, a ninth diode; d10, a twelfth polar tube; c9, ninth capacitor; c11, an eleventh capacitor; c13, a thirteenth capacitor; c15, a fifteenth capacitor.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
With reference to fig. 1, an embodiment of the present invention provides a novel traffic signal lamp fault detection system, which includes a power module 2, a rectifier circuit module 3, a current transformer module 4, a digital control analog switch module 5, a shaping circuit module 6, a single chip 7, and a central node 9; the rectifying circuit module 3 rectifies the connected signal lamp circuit; the current transformer module 4 is electrically connected with the rectifier circuit module 3 and collects the consumed current of the rectified signal lamp circuit; the current transformer module 4 is electrically connected with the digital control analog switch module 5, and the digital control analog switch module 5 switches signals of the signal lamp circuit; the digital control analog switch module 5 is electrically connected with the shaping circuit module 6, and the shaping circuit module 6 shapes the signals switched by the digital control analog switch module 5 to form shaped signals; the single chip microcomputer 7 receives the shaping signal, the single chip microcomputer 7 judges whether the current value of the shaping signal is normal or not, and information is sent to the central node 9; the central node 9 is electrically connected with the single chip microcomputer 7, and the central node 9 analyzes and integrates the fault state of the signal lamp of the intersection according to the logic address of the signal lamp; and the power supply module 2 supplies power to the traffic signal lamp fault detection system.
The novel traffic signal lamp fault detection system provided by the embodiment of the invention supplies power to the detection system of the scheme through the power supply module 2, then the circuit of a traffic signal lamp is connected into the system through the incoming line terminal 1, after rectification is carried out through the rectification circuit module 3, the consumed current of the rectified signal lamp circuit is collected through the current transformer, the collected current is shaped through the shaping circuit module 6 through the digital control analog switch module 5, switching and shaping of three paths of traffic signal lamp signals are completed, finally, the signal shaped by each path of signal lamp is transmitted to the single chip microcomputer 7 to complete digital-to-analog conversion, the current signal collected in real time is compared with the stored normal current value through the single chip microcomputer 7, the working condition of each path of signal lamp is judged, the result is output through the outgoing line terminal 8, finally, fault information is sent to the central node 9 through LOAR communication, and the central node 9 analyzes and integrates the fault state of the intersection according to the logic address of the lamp. Compared with the traditional signal lamp detection mode, the traffic signal lamp fault detection system adopts distributed detection, and the system is directly installed at the wiring terminal of a lamp without changing a lamp circuit, so that the problems of complex structure, inconvenience in installation and unsatisfactory detection effect of a traffic signal lamp fault detection device in the prior art are effectively solved, and the purpose of timely and accurately acquiring the working state of the traffic signal lamp is realized.
The power module 2 in this embodiment supplies power by using an AC-DC5V2A power supply. The digital control analog switch module 5 adopts a digital control analog switch of a CD4052 model.
With reference to fig. 5, the system further includes an acquisition circuit module, and the acquisition circuit module acquires the voltage of the power module 2 and the temperature information in the traffic signal lamp fault detection system.
The acquisition circuit module in this scheme can gather power module 2's voltage and the temperature information among the traffic signal lamp fault detection system to the staff is convenient for each item data in the operating personnel monitoring system better.
More optimally, the system in the embodiment further comprises a display module, the acquisition circuit module is electrically connected with the display module, and the acquisition circuit module displays the acquired information through the display module.
In this embodiment, connect the acquisition circuit module in the display module electricity, carry out audio-visual demonstration through the information that display module gathered in to the acquisition circuit module and come out, can be convenient for each item data in the operating personnel monitoring system better. Wherein, the display module can adopt an LED display screen or a liquid crystal display screen.
As shown in fig. 5, the acquisition circuit module includes three sets of acquisition circuit submodules, each set of acquisition circuit submodule includes two resistors connected in series, and a circuit to be acquired is connected in parallel between the two resistors.
Specifically, in this embodiment, the three sets of acquisition circuit sub-modules are respectively a fifteenth resistor R15 and an eighteenth resistor R18 connected in series with each other, a thirteenth resistor R13 and a fourteenth resistor R14 connected in series with each other, and a nineteenth resistor R19 and a twenty-second resistor R22 connected in series with each other, the three sets of acquisition circuit sub-modules are connected in parallel, and each set of acquisition circuit sub-module connected in series is respectively connected in parallel with TEMPERAD, battery, and VCCAD, and is used for measuring the temperature, the battery voltage, and the acquisition circuit voltage in the system.
Referring to fig. 2, the rectifier circuit module 3 includes a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a fifth diode D5, a sixth diode D6, a seventh diode D7, and an eighth diode D8; the first diode D1 and the second diode D2 are connected in series to form a first group of rectifier circuit sub-modules, the third diode D3 and the fourth diode D4 are connected in series to form a second group of rectifier circuit sub-modules, the fifth diode D5 and the sixth diode D6 are connected in series to form a third group of rectifier circuit sub-modules, and the seventh diode D7 and the eighth diode D8 are connected in series to form a fourth group of rectifier circuit sub-modules; the first group of rectifying circuit sub-modules, the second group of rectifying circuit sub-modules, the third group of rectifying circuit sub-modules and the fourth group of rectifying circuit sub-modules are connected in parallel.
In the practical application process, specifically, in the rectifier circuit module 3 of this embodiment, the rectifier circuit module 3 formed by connecting the first set of rectifier circuit sub-modules, the second set of rectifier circuit sub-modules, the third set of rectifier circuit sub-modules, and the fourth set of rectifier circuit sub-modules in parallel is respectively connected to the current transformer module 4 and the red-green Huang Sanlu circuit of the traffic signal lamp, and the rectifier circuit module 3 rectifies the current in the red-green Huang Sanlu circuit of the traffic signal lamp, so that the rectified current in the red-green Huang Sanlu circuit of the traffic signal lamp can be received and collected by the current transformer module 4.
As shown in fig. 4, the current transformer module 4 includes three sets of current transformer sub-modules; the access ends of the three groups of current transformer sub-modules are respectively connected with the output ends of three groups of rectifier circuit sub-modules in the rectifier circuit module 3; the output ends of the three groups of current transformer sub-modules are respectively connected with corresponding pins on the digital control analog switch module 5.
In this embodiment, the current transformer module 4 is configured to collect current consumption of red and green Huang Sanlu, and specifically, the three sets of current transformer submodules of this embodiment are respectively connected to the first resistor R1, the third resistor R3, and the fourth resistor R4, so as to protect the current transformer module 4. The current transformer module 4 in this embodiment is preferably a current transformer of the ZHT107A type.
Referring to fig. 6, the shaping circuit module 6 includes a first operational amplifier 10, a second operational amplifier 11, and a third operational amplifier 12; the inverting input end of the first operational amplifier 10 is connected with the output end of the digital control analog switch module 5, the non-inverting input end is grounded, the pin of the positive electrode of the power supply is connected with the IC1B, and the output ends are respectively connected with the positive electrode of the ninth diode D9 and the negative electrode of the twelfth diode D10; the inverting input end of the second operational amplifier 11 is connected with the anode of a twelfth diode D10, the non-inverting input end is connected with the cathode of a ninth diode D9, the pin of the anode of the power supply is connected with the IC1A, the pin of the cathode of the power supply is grounded, and the output end is connected with the non-inverting input end of a third operational amplifier 12; the inverting input end of the third operational amplifier 12 is grounded, the positive pin of the power supply is connected with the IC1C, and the output end is connected with the singlechip 7.
The shaping circuit module 6 in this embodiment selects an LM224 four operational amplifier, and includes a first operational amplifier 10, a second operational amplifier 11, and a third operational amplifier 12 that are connected to each other, where an IC1B connected to a power supply positive pin of the first operational amplifier 10 is used to perform small signal rectification on a voltage signal acquired by the current transformer module 4, a power supply positive pin of the second operational amplifier 11 is connected to an IC1A used to perform rectification filtering on the rectified voltage signal, and an IC1C connected to a power supply positive pin of the third operational amplifier 12 is used to amplify and filter the rectified voltage signal, and after three times of rectification filtering is performed by the three operational amplifiers, an ac small signal is converted into a dc signal to be output, and the ADIN shown in fig. 6 is the shaped dc voltage.
As shown in fig. 6, an eleventh resistor R11 is connected between the inverting input terminal of the first operational amplifier 10 and the anode of the twelfth diode D10; a fifth resistor R5 is connected between the inverting input terminal of the first operational amplifier 10 and the negative electrode of the ninth diode D9.
In the present embodiment, specifically, an eleventh resistor R11 is connected between the inverting input terminal of the first operational amplifier 10 and the anode of the twelfth diode D10, and a fifth resistor R5 is connected between the inverting input terminal of the first operational amplifier 10 and the cathode of the ninth diode D9, wherein the purpose of the external resistor is to determine the amplification factor of the first operational amplifier 10, so as to be able to manually control the amplification factor of the first operational amplifier 10.
In addition, a sixth resistor R6 is connected between the output terminal of the model CD4052 digital control analog switch module 5 and the inverting input terminal of the first operational amplifier 10 in the shaping circuit module 6, and the sixth resistor R6, the eleventh resistor R11 and the fifth resistor R5 jointly determine the amplification factor of the first operational amplifier 10. The ninth diode D9 and the twelfth diode D10 connected to the output terminal of the first operational amplifier 10 perform a rectifying function.
Referring to fig. 6, a twelfth resistor R12 is connected between the inverting input terminal of the second operational amplifier 11 and the anode of the twelfth diode D10; a tenth resistor R10 is connected between the inverting input terminal of the second operational amplifier 11 and the output terminal of the second operational amplifier 11.
In the present embodiment, a twelfth resistor R12 is connected between the inverting input terminal of the second operational amplifier 11 and the anode of the twelfth diode D10, and a tenth resistor R10 is connected between the inverting input terminal of the second operational amplifier 11 and the output terminal of the second operational amplifier 11, wherein the purpose of the external resistors, i.e., the twelfth resistor R12 and the tenth resistor R10, is to determine the amplification factor of the second operational amplifier 11, so that the amplification factor of the second operational amplifier 11 can be manually controlled.
In addition, a ninth capacitor C9 is further connected to the power supply positive terminal of the second operational amplifier 11, an eleventh capacitor C11 is further connected to the power supply negative terminal of the second operational amplifier 11, and the ninth capacitor C9 and the eleventh capacitor C11 are coupling capacitors.
As shown in fig. 6, a ninth resistor R9 is connected between the non-inverting input terminal of the third operational amplifier 12 and the output terminal of the second operational amplifier 11; a seventh resistor R7 is connected between the inverting input terminal of the third operational amplifier 12 and the output terminal of the third operational amplifier 12.
In this embodiment, a ninth resistor R9 is connected between the non-inverting input terminal of the third operational amplifier 12 and the output terminal of the second operational amplifier 11, and a seventh resistor R7 is connected between the inverting input terminal of the third operational amplifier 12 and the output terminal of the third operational amplifier 12, wherein an eighth resistor R8 is further connected to the inverting input terminal of the third operational amplifier 12, the other end of the eighth resistor R8 is grounded, and the external resistors, i.e., the seventh resistor R7, the eighth resistor R8, and the ninth resistor R9, are used for determining the amplification factor of the second operational amplifier 11, so that the amplification factor of the third operational amplifier 12 can be manually controlled.
In addition, a thirteenth capacitor C13 is connected to the non-inverting input terminal of the third operational amplifier 12, the other end of the thirteenth capacitor C13 is grounded, and the thirteenth capacitor C13 is a coupling capacitor.
In the above embodiment, the fifth resistor R5, the sixth resistor R6, the eighth resistor R8, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14, the fifteenth resistor R15, the eighteenth resistor R18, the nineteenth resistor R19, and the twenty-second resistor R22 have resistance values of 10K Ω, the first resistor R1, the third resistor R3, and the fourth resistor R4 have resistance values of 200 Ω, and the seventh resistor R7 has resistance values of 30K Ω.
Although the present application provides method steps as described in an embodiment or flowchart, additional or fewer steps may be included based on conventional or non-inventive efforts. The sequence of steps recited in this embodiment is only one of many steps performed and does not represent a unique order of execution. When the device or the client product in practice executes, it can execute sequentially or in parallel according to the method shown in the embodiment or the figures (for example, in the context of parallel processors or multi-thread processing).
The apparatuses or modules illustrated in the above embodiments may be specifically implemented by a computer chip or an entity, or implemented by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. The functionality of the modules may be implemented in the same one or more software and/or hardware implementations of the present application. Of course, a module that implements a certain function may also be implemented by a plurality of sub-modules or a combination of sub-units.
The methods, apparatus or modules described herein may be implemented in a computer readable program code means for a controller in any suitable manner, for example, the controller may take the form of, for example, a microprocessor or processor and a computer readable medium storing computer readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, application Specific Integrated Circuits (ASICs), programmable logic controllers and embedded microcontrollers, examples of which include, but are not limited to, the following microcontrollers: ARC 625D, atmel AT91SAM, microchip PIC18F26K20, and Silicone Labs C8051F320, the memory controller may also be implemented as part of the control logic for the memory. Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
Some of the modules in the apparatus described herein may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary hardware. Based on such understanding, the technical solutions of the present application may be embodied in the form of software products or in the implementation process of data migration, which essentially or partially contributes to the prior art. The computer software product may be stored in a storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, mobile terminal, server, or network device, etc.) to perform the methods described in the various embodiments or portions of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment is described with emphasis on the difference from the other embodiments. All or portions of the present application are operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, mobile communication terminals, multiprocessor systems, microprocessor-based systems, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.
Claims (10)
1. A novel traffic signal lamp fault detection system is characterized by comprising a power supply module, a rectification circuit module, a current transformer module, a digital control analog switch module, a shaping circuit module, a single chip microcomputer and a central node;
the rectifying circuit module rectifies the accessed signal lamp circuit;
the current transformer module is electrically connected with the rectifying circuit module and is used for collecting the consumption current of the rectified signal lamp circuit;
the current transformer module is electrically connected with the digital control analog switch module, and the digital control analog switch module switches signals of the signal lamp circuit;
the digital control analog switch module is electrically connected with the shaping circuit module, and the shaping circuit module shapes the signals switched by the digital control analog switch module to form shaped signals;
the single chip microcomputer receives the shaping signal, judges whether the current value of the shaping signal is normal or not and sends information to the central node;
the central node is electrically connected with the single chip microcomputer and analyzes and integrates the fault state of the signal lamp of the intersection according to the logic address of the signal lamp;
and the power supply module supplies power to the traffic signal lamp fault detection system.
2. The system of claim 1, further comprising a collection circuit module, wherein the collection circuit module collects the voltage of the power module and the temperature information in the system.
3. The system of claim 2, further comprising a display module, wherein the collection circuit module is electrically connected to the display module, and the collection circuit module displays the collected information through the display module.
4. The system according to claim 2, wherein the collection circuit module comprises three sets of collection circuit submodules, each set of collection circuit submodules comprises two resistors connected in series, and a circuit to be collected is connected between the two resistors in parallel.
5. The novel traffic signal lamp fault detection system of claim 1, wherein the rectifier circuit module includes a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a sixth diode, a seventh diode, and an eighth diode;
the first diode and the second diode are connected in series to form a first group of rectifier circuit sub-modules, the third diode and the fourth diode are connected in series to form a second group of rectifier circuit sub-modules, the fifth diode and the sixth diode are connected in series to form a third group of rectifier circuit sub-modules, and the seventh diode and the eighth diode are connected in series to form a fourth group of rectifier circuit sub-modules; the first group of rectifying circuit sub-modules, the second group of rectifying circuit sub-modules, the third group of rectifying circuit sub-modules and the fourth group of rectifying circuit sub-modules are connected in parallel.
6. The novel traffic signal lamp fault detection system of claim 1, wherein the current transformer module comprises three sets of current transformer sub-modules;
the access ends of the three groups of current transformer sub-modules are respectively connected with the output ends of three groups of rectifier circuit sub-modules in the rectifier circuit module;
and the output ends of the three groups of current transformer sub-modules are respectively connected with corresponding pins on the digital control analog switch module.
7. The novel traffic signal lamp fault detection system of claim 1, wherein the shaping circuit module comprises a first operational amplifier, a second operational amplifier, and a third operational amplifier;
the inverting input end of the first operational amplifier is connected with the output end of the digital control analog switch module, the non-inverting input end of the first operational amplifier is grounded, the pin of the positive electrode of the power supply is connected with the IC1B, and the output ends of the first operational amplifier are respectively connected with the positive electrode of the ninth diode and the negative electrode of the twelfth diode;
the inverting input end of the second operational amplifier is connected with the anode of the twelfth diode, the non-inverting input end of the second operational amplifier is connected with the cathode of the ninth diode, the pin of the anode of the power supply is connected with the IC1A, the pin of the cathode of the power supply is grounded, and the output end of the second operational amplifier is connected with the non-inverting input end of the third operational amplifier;
and the inverting input end of the third operational amplifier is grounded, the positive pin of the power supply is connected with the IC1C, and the output end of the third operational amplifier is connected with the singlechip.
8. The novel traffic signal lamp fault detection system as claimed in claim 7, wherein an eleventh resistor is connected between the inverting input terminal of the first operational amplifier and the anode of the twelfth pole tube; and a fifth resistor is connected between the inverting input end of the first operational amplifier and the negative electrode of the ninth diode.
9. The novel traffic signal lamp fault detection system as claimed in claim 7, wherein a twelfth resistor is connected between the inverting input terminal of the second operational amplifier and the anode of the twelfth diode; and a tenth resistor is connected between the inverting input end of the second operational amplifier and the output end of the second operational amplifier.
10. The novel traffic signal lamp fault detection system as claimed in claim 7, wherein a ninth resistor is connected between the non-inverting input terminal of the third operational amplifier and the output terminal of the second operational amplifier; and a seventh resistor is connected between the inverting input end of the third operational amplifier and the output end of the third operational amplifier.
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