CN107346004A - A kind of signal lamp failure detection means based on voltage effective value - Google Patents
A kind of signal lamp failure detection means based on voltage effective value Download PDFInfo
- Publication number
- CN107346004A CN107346004A CN201710677719.2A CN201710677719A CN107346004A CN 107346004 A CN107346004 A CN 107346004A CN 201710677719 A CN201710677719 A CN 201710677719A CN 107346004 A CN107346004 A CN 107346004A
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- signal lamp
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- control circuit
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- 238000001514 detection method Methods 0.000 title claims abstract description 44
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims 2
- 238000007405 data analysis Methods 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/44—Testing lamps
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/02—Measuring effective values, i.e. root-mean-square values
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to a kind of signal lamp failure detection means based on voltage effective value, including controller, ON-OFF control circuit, I/O expansion module, detection module and voltage conversion circuit, ON-OFF control circuit input connects controller, its output end connection alternating current L lines；The alternating current L lines and N lines at voltage transformation module input connection signal lamp both ends, the input of its output end connection detection module, the output end connection controller of detection module, SPI communication connects between controller, I/O expansion module and detection module.The present invention is realized and bright, virtual pressure failure, effective monitoring of on-off circuit failure is missed to signal lamp and is precisely judged by signal lamp terminal voltage RMS to DC and judgement；Controller can be with the terminal voltage virtual value of real time output lamp, big data analysis and processing for the later stage；Accuracy of judgement of the present invention, securely and reliably, it is easy to extend, cost of implementation is low.
Description
Technical field
The present invention relates to traffic signal control system technology, and in particular to a kind of signal lamp failure based on voltage effective value
Detection means.
Background technology
To ensure the normal work of belisha beacon, traffic controller is while normal control signal lamp on/off, also
The working condition of signal lamp need to be detected in real time, to ensure the normal finger of the normal work of signal lamp and crossing traffic signal
Show.Bright detection method is currently missed to signal lamp and is generally the both end voltage state that signal lamp is judged by exchanging optocoupler, according to
Whether optocoupler turns on the light on and off state for judging signal lamp, and this method is higher to the type selecting of device and required precision, sometimes also
The situation of erroneous judgement occurs；Because when signal lamp extinguishes, signal lamp both ends can have certain virtual pressure, and the virtual pressure exceeds sometimes
National standard permissible value, the method for optocoupler detection can not make correct judgement to the virtual pressure at signal lamp both ends；Simultaneously this method also without
Method is judged the running status of controller itself control circuit；When judging the working condition of signal lamp, reality can not be provided
The voltage effective value on border carries out deep data analysis for the later stage to signal lamp or wiring condition.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide a kind of signal lamp detection based on voltage effective value
Device, detected and judged by signal lamp voltage effective value based on SPI communication, realize signal lamp is missed bright, virtual pressure failure,
Effective monitoring of on-off circuit failure and precisely judge, controller can with the terminal voltage virtual value of real time output lamp, with
It is easy to the big data in later stage to analyze and handle.
To realize above-mentioned technical purpose, a kind of signal lamp detection means based on voltage effective value provided by the present invention,
Including controller, ON-OFF control circuit, detection module and voltage conversion circuit, the ON-OFF control circuit input connection control
Device processed, alternating current L lines connect signal lamp through ON-OFF control circuit；ON-OFF control circuit receives controller command control signal lamp
Upper electricity and power-off；The alternating current L lines and N lines at the voltage transformation module input connection signal lamp both ends, the connection of its output end
The input of detection module, the output end connection controller of detection module, the controller, ON-OFF control circuit and detection mould
SPI communication connects between block.
As a further improvement on the present invention, present invention additionally comprises using extended chip MCP23S17 I/O expansion module,
The I/O expansion module input connects controller, its output end connecting valve control circuit, the I/O expansion module and control
Device SPI communication connects.
Specifically, the controller uses STM32 micro controllers.
Specifically, the detection module uses BL6522B chips.
Specifically, the transformer of the voltage conversion circuit uses current mode voltage transformer TV1005-1M.
From above technical scheme, a kind of signal lamp detection means based on voltage effective value provided by the present invention,
Based on SPI communication, detection module transmits signal lamp terminal voltage virtual value to controller, the control of controller combination current demand signal lamp
State processed and the terminal voltage virtual value, judge the failure mode of the signal lamp, and the terminal voltage virtual value is exported in real time, just
In the big data analysis and processing in later stage；, can be flexible according to the quantity of signal lamp to be detected present invention additionally comprises I/O expansion module
Extension, improve the scalability of the present invention；Voltage conversion circuit uses current mode voltage transformer in the present invention, achievable pair
Being effectively isolated and being depressured for alternating voltage, improves the security of test.
Brief description of the drawings
Fig. 1 is the circuit block diagram of the present invention.
Fig. 2 is the schematic diagram of voltage transformer in the present invention.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
Signal lamp failure detection means based on voltage effective value in embodiment as shown in Figure 1, including controller, I/O expansion mould
Block, ON-OFF control circuit, detection module and voltage conversion circuit, ON-OFF control circuit input connection I/O expansion module, its
Output end connect alternating current L lines, ON-OFF control circuit receive controller control instruction, by control exchange L lines connection with
Disconnect, realize the control to signal lamp；I/O expansion module input connection controller, its output end connecting valve control circuit,
The signal lamp quantity that can be controlled as needed is extended, the L lines and N at voltage transformation module input connection signal lamp both ends
The terminal voltage of signal lamp is reduced into by line, the input of its output end connection detection module, voltage transformation module by a certain percentage
Low AC voltage, and transmit to detection module；The output end connection controller of detection module, the signal lamp terminal voltage that will be detected
Virtual value is transferred to controller and carries out breakdown judge；SPI communication connects between controller, ON-OFF control circuit and detection module
Connect.
In the present embodiment, controller uses STM32 micro controllers, and the micro controller has SPI communication interface, passes through SPI communication
The chip communication of interface and detection module connects, can be realized to the Time-sharing controls of multiple voltage checking chips by enabling pin and
Communication.
In the present embodiment, detection module uses the BL6522B chips of SPI communication, can input the low electricity of 6 road AC analogues simultaneously
Pressure is detected, and passes through SPI communication output AC voltage virtual value；Detection chip can detect way according to signal lamp and be expanded
Exhibition；Because controller need to carry out switch control to signal lamp first, the detection of state, therefore controller pair then can be just carried out
The control of signal lamp and state-detection can be by realizing with SPI communication all the way.
In the present embodiment, I/O expansion chip uses the MCP23S17 of SPI communication, and the chip can be by extending 16 IO outputs
Interface, each IO outputs control the switch of signal lamp all the way by ON-OFF control circuit；I/O expansion chip can also be believed according to control
The number of signal lamp is extended.
As shown in Fig. 2 in the present embodiment, to realize ac high-voltage and the friendship of detection chip detection to signal lamp terminal voltage
Stream low pressure is effectively isolated, and voltage conversion circuit carries out the conversion of voltage, the exchange of transformer using current mode voltage transformer
Input series resistance R by alternating voltage to be converted to current signal, and the output-parallel resistance r of transformer is with by the electricity of transformer
Stream signal is converted to the ac voltage signal of low-voltage.The circuit can realize being effectively isolated and being depressured to alternating voltage, improve
The security of test.The transformer of voltage conversion circuit uses current mode voltage transformer TV1005-1M, and the transformer can be realized
To the alternating voltage detection conversion output less than AC1000V, resistance R uses 51K Ω 5W power resistor, can turn input voltage
Current signal is changed to, and same current value is exported by transformer, output resistance r uses 200 Ω resistance, can be by transformer
The current signal of output is converted to voltage signal, so that detection chip carries out voltage detecting.The exchange that detection chip will detect
Magnitude of voltage, proportionality coefficient is obtained by calculating input and output resistance ratio, so as to the terminal voltage virtual value of output signal light.
Specifically deterministic process is：
After controller control signal lamp switch, by time delay 0.1s, after stable working condition is entered after signal lamp, detection
The magnitude of voltage at signal lamp both ends, by the state of a control of the magnitude of voltage binding signal lamp detected, failure judgement species can be defeated in real time
Go out corresponding malfunction and voltage effective value, be easy to overhaul signal lamp or circuit accordingly.Specifically：
When controller control signal lamp extinguishes, the terminal voltage for such as detecting signal lamp is the AC value more than AC90V, then
Judge signal lamp for by mistake bright malfunction；The terminal voltage such as detected is AC30V-90V AC value, is judged as signal
Abnormal virtual pressure be present in lamp both ends；The AC value such as detected is not more than AC30V, then judges that signal lamp normally extinguishes.When
When controller control signal lamp is lighted, the terminal voltage for such as detecting signal lamp is the AC value more than AC90V, then judges letter
Signal lamp normal work；The terminal voltage such as detected is AC30V-90V AC value, is judged as that controller exports failure；Such as
The AC value detected is not more than AC30V, then judges on-off circuit failure or signal lamp short circuit；For more than AC264V's
High pressure, it can determine whether as high voltage fault.
Wherein, according to engineering experience, general virtual pressure can influence the light on and off of signal lamp in more than AC30V；Signal lamp is normally located
When the state lighted, terminal voltage is in more than AC90V.Therefore, in the present embodiment, controller is obtained by SPI communication and detected
If signal lamp terminal voltage value be more than AC90V, judge signal lamp for illuminating state, if terminal voltage value between AC30V-90V,
Then judge that signal lamp has the virtual pressure of over range, if terminal voltage value is less than AC30V, judge signal lamp for OFF state.
Controller can the working condition of output signal light and the terminal voltage value that detects simultaneously, for later data analysis and
Processing.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, it all should fall into the protection domain of claims of the present invention determination.
Claims (5)
1. a kind of signal lamp failure detection means based on voltage effective value, including controller, ON-OFF control circuit, detection module
And voltage conversion circuit, it is characterised in that：The ON-OFF control circuit input connects controller, and alternating current L lines are through switch
Control circuit connects signal lamp, and ON-OFF control circuit receives upper electricity and the power-off of controller command control signal lamp；The voltage
The alternating current L lines and N lines at modular converter input connection signal lamp both ends, the input of its output end connection detection module, inspection
The output end connection controller of module is surveyed, SPI communication connects between the controller, ON-OFF control circuit and detection module.
2. the signal lamp failure detection means according to claim 1 based on voltage effective value, it is characterised in that：Also include
Using extended chip MCP23S17 I/O expansion module, the I/O expansion module input connects controller, the connection of its output end
ON-OFF control circuit.
3. the signal lamp failure detection means according to claim 1 based on voltage effective value, it is characterised in that：The control
Device processed uses STM32 micro controllers.
4. the signal lamp failure detection means according to claim 1 based on voltage effective value, it is characterised in that：The inspection
Survey module and use BL6522B chips.
5. the signal lamp failure detection means according to claim 1 based on voltage effective value, it is characterised in that：The electricity
The transformer of voltage conversion circuit uses current mode voltage transformer TV1005-1M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710677719.2A CN107346004B (en) | 2017-08-09 | 2017-08-09 | Signal lamp fault detection device based on voltage effective value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710677719.2A CN107346004B (en) | 2017-08-09 | 2017-08-09 | Signal lamp fault detection device based on voltage effective value |
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| Publication Number | Publication Date |
|---|---|
| CN107346004A true CN107346004A (en) | 2017-11-14 |
| CN107346004B CN107346004B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710677719.2A Active CN107346004B (en) | 2017-08-09 | 2017-08-09 | Signal lamp fault detection device based on voltage effective value |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933740A (en) * | 2021-09-02 | 2022-01-14 | 广明源光科技股份有限公司 | Pulse xenon lamp testing method |
| CN114613183A (en) * | 2022-03-21 | 2022-06-10 | 安徽硕牌通信科技有限公司 | Signal lamp adjusting system based on wisdom traffic |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0207922A1 (en) * | 1985-06-20 | 1987-01-07 | Siemens Aktiengesellschaft | Process and apparatus for the surveillance of beacon lights |
| CN101782632A (en) * | 2010-02-02 | 2010-07-21 | 青岛海信网络科技股份有限公司 | Testing system for optical feedback faults of signal lamp terminal |
| US8072223B1 (en) * | 2011-07-31 | 2011-12-06 | Sioma Edward M | Monitoring circuit for determining if an electric element has failed before the electric element is powered |
| CN204856917U (en) * | 2015-07-29 | 2015-12-09 | 杭州云正科技有限公司 | Traffic signal lamp trouble intellectual detection system , alarm system |
| CN207440266U (en) * | 2017-08-09 | 2018-06-01 | 安徽科力信息产业有限责任公司 | A kind of signal lamp failure detection device based on voltage effective value |
-
2017
- 2017-08-09 CN CN201710677719.2A patent/CN107346004B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0207922A1 (en) * | 1985-06-20 | 1987-01-07 | Siemens Aktiengesellschaft | Process and apparatus for the surveillance of beacon lights |
| CN101782632A (en) * | 2010-02-02 | 2010-07-21 | 青岛海信网络科技股份有限公司 | Testing system for optical feedback faults of signal lamp terminal |
| US8072223B1 (en) * | 2011-07-31 | 2011-12-06 | Sioma Edward M | Monitoring circuit for determining if an electric element has failed before the electric element is powered |
| CN204856917U (en) * | 2015-07-29 | 2015-12-09 | 杭州云正科技有限公司 | Traffic signal lamp trouble intellectual detection system , alarm system |
| CN207440266U (en) * | 2017-08-09 | 2018-06-01 | 安徽科力信息产业有限责任公司 | A kind of signal lamp failure detection device based on voltage effective value |
Non-Patent Citations (1)
| Title |
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| 孔领领: "交通信号灯故障检测***设计与实现", 《测控技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933740A (en) * | 2021-09-02 | 2022-01-14 | 广明源光科技股份有限公司 | Pulse xenon lamp testing method |
| CN114613183A (en) * | 2022-03-21 | 2022-06-10 | 安徽硕牌通信科技有限公司 | Signal lamp adjusting system based on wisdom traffic |
| CN114613183B (en) * | 2022-03-21 | 2023-03-28 | 河南云帆电子科技有限公司 | Signal lamp adjusting system based on wisdom traffic |
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| CN107346004B (en) | 2023-10-27 |
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