CN102568227A - ARM (Advanced Reduced Instruction Set Computer Machine)-based electronic police front-end platform comprehensive management system - Google Patents
ARM (Advanced Reduced Instruction Set Computer Machine)-based electronic police front-end platform comprehensive management system Download PDFInfo
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- CN102568227A CN102568227A CN2011104531218A CN201110453121A CN102568227A CN 102568227 A CN102568227 A CN 102568227A CN 2011104531218 A CN2011104531218 A CN 2011104531218A CN 201110453121 A CN201110453121 A CN 201110453121A CN 102568227 A CN102568227 A CN 102568227A
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Abstract
The invention relates to an ARM (Advanced Reduced Instruction Set Computer Machine)-based electronic police front-end platform comprehensive management system, comprising a microprocessor circuit, a power supply circuit, a coil information acquisition circuit, a red light information acquisition circuit, a host communication circuit and a power supply comprehensive management circuit, wherein the microprocessor circuit is taken as a control core and used for receiving signals of the coil information acquisition circuit and the red light acquisition circuit and communicates with an upper computer through the host communication circuit; the power supply comprehensive management circuit receives a control instruction of the upper computer through the host communication circuit to control the power supply of all parts in a front-end platform; and the power supply circuit s used for supplying working power for all the parts. According to the system disclosed by the invention, jaywalking information and coil speed measurement information are acquired synchronously, the instantaneity for data acquisition is increased largely, the integral performance of an electronic police system is promoted, an electronic police snap-shot effect is enhanced, meanwhile the power supply of front-end equipment is managed intelligently, and thus, the system is guaranteed to run reliably.
Description
Technical field
The present invention relates to a kind of electronic police front end management system that is applied in the field of traffic control, a kind of specifically electronic police front-end platform total management system based on ARM.
Background technology
In recent years, vehicle flowrate increases substantially, and over-speed vehicles, vehicles running red light number also significantly increase thereupon, have caused many traffic hazards, have constituted the serious threat to life property safety of people.And vehicle supervision department can not monitor all crossings because the traffic police is limited one by one, and this just presses for a kind ofly can safeguard automatically that the traffic-police of traffic safety and order monitors the crossing; Electronic police produces along with this needs and development of science and technology, as the effective means of modern traffic safety management, is monitoring rapidly; Capture, handle traffic offence, obtain illegal evidence; Effective monitoring means is provided; To the containment overspeed of vehicle, the vital role of having made a dash across the red light has become requisite important member in the control of traffic and road troop.Its social benefit is very obvious, and formed powerful deterrent force impels the numerous drivers dare not be arbitrarily illegal, thereby has both guaranteed traffic safety, has reduced traffic police's labour intensity, has liberated a large amount of volume police strength again and has been used to deal with contingencies.
As everyone knows; Electronic police system is by forming in the on-the-spot front-end platform of the rear end of traffic control center platform and crossing; The reliability of its front-end platform equipment work is most important, and front-end platform functional structure in the past is single, makes a dash across the red light and the coil information acquisition of testing the speed separates design; Do not have versatility and unitarity, and the equipment that front-end platform uses is not had management function.The host computer that for example generally uses in the electronic police is program crashing sometimes, and when only depending on software watchdog can not recover its function, the entire front end system just breaks down; Video camera breaks down for another example; Only depend on upper computer software control to throw away and to recover its function, at this moment just have only and safeguard, not only wasted manpower and materials to the scene by the maintainer; But also caused the blind area on the monitoring period, can not complete technical support be provided for traffic administration.
Summary of the invention
Front-end platform to electronic police system in the prior art lacks versatility and unitarity; And the problem that does not have managing functions of equipment, the technical matters that the present invention will solve provide a kind of equipment that front-end platform is used of can realizing and carry out the electronic police front-end platform total management system based on ARM of general management.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
The present invention is based on the electronic police front-end platform total management system of ARM; Comprise microcontroller circuit, power circuit, coil information acquisition circuit, red light information acquisition circuit, host communication circuit and power supply integrated management circuit; It wherein is the control core with the microcontroller circuit; The signal of its receiving coil information acquisition circuit and red light information acquisition circuit communicates through host communication circuit and host computer; Power supply integrated management circuit is controlled the power supply of each parts in the front-end platform through the steering order that host communication circuit receives host computer; Power circuit is that each several part provides working power.
Said power supply integrated management circuit comprises triode and relay (K4); Wherein, The base stage of triode connects the signal output part of microcontroller circuit through optocoupler; The emitter of triode links to each other with working power, and collector links to each other with the coil of relay, and the contact of relay is located in the power control loop of front-end equipment.
Said power circuit has the DC-DC module, is located between power supply integrated management circuit, red light information acquisition circuit, host communication circuit, coil information acquisition circuit and microcontroller circuit and the power supply separately.
Said coil information acquisition circuit comprises the two-stage amplifying circuit that is formed by first triode and second triode; The base stage of first triode is connected to the coil status signal of wagon detector output, and the collector of second triode is connected to the inspection car signal input part of microcontroller through optocoupler.
Said red light information acquisition circuit comprises rectifier, reducing transformer, wave filter, voltage comparator and triode; Wherein the input end of rectifier receives the signal lamp state of traffic signaling equipment output; Output terminal inputs to voltage comparator through reducing transformer, wave filter; The high level or the low level of voltage comparator output link to each other with transistor base, and the collector of triode is connected to the red light information input port of microcontroller through optocoupler.
Said host communication circuit comprises two optic coupling elements, and when system's transmission information was given host computer, the input end of first optocoupler received the Transistor-Transistor Logic level signal of microcontroller circuit, and output terminal is exported 232 level signals to host computer; When system received the information of host computer transmission, second optocoupler was through pull-up resistor output Transistor-Transistor Logic level.
Microprocessor adopts the 512KB in-chip FLASH, 32 arm processor chips of 64KB ram in slice, and based on the CORTEX-M3 of ARM family kernel, operating frequency is 100MHz.
Having the integrated management of electronic police front-end platform in the microprocessor is control flow chart, and its control procedure is:
When upper computer detection when video camera can not normally be captured, send order B and give microprocessor;
Microprocessor interrupts receiving the order that host computer sends through serial ports;
Microprocessor receives orders behind the B, and video camera is carried out power-off restarting, withdraws from serial ports and interrupts, and finishes once the power control procedure to video camera.
The B if microprocessor does not receive orders then judges whether to receive order C;
If receive order C, promptly host computer need be opened the light filling unit, and then microprocessor is connected the power supply of light filling unit, withdraws from serial ports and interrupts, and finishes once the power control procedure to the light filling unit.
If microprocessor does not receive order C, then break off the power supply of light filling unit;
Continue and judge whether to receive order A;
If do not receive order A at the appointed time, then microprocessor thinks that fault has appearred in host computer, to its power-off restarting;
Withdraw from serial ports and interrupt, finish once power control procedure host computer.
The present invention has following beneficial effect and advantage:
1. the present invention adopts operating frequency to reach 32 embedded-type ARM microprocessors of 100MHZ, makes a dash across the red light and the coil information acquisition of testing the speed is carried out synchronously, has improved the real-time of image data greatly; Promoted the overall performance of electronic police system; Improved the effect of electric police grasp shoot, the power supply to front-end equipment has had intelligent management simultaneously, guarantees system's reliability service; Especially to the control of light filling unit, when using the LED lamp, has remarkable energy saving effect.
Description of drawings
Fig. 1 is the electronic police front-end platform total management system structural representation that the present invention is based on ARM;
Fig. 2 is a system electrical block diagram of the present invention;
Fig. 3 is power circuit diagram in the system of the present invention;
Fig. 4 is coil information acquisition circuit figure in the system of the present invention;
Fig. 5 is red light information acquisition circuit figure in the system of the present invention;
Fig. 6 is host communication circuit figure in the system of the present invention;
Fig. 7 is front end power supply integrated management circuit diagram in the system of the present invention;
Fig. 8 A～8D is the software flow pattern of system applies of the present invention.
Embodiment
Below in conjunction with Figure of description the present invention is done further elaboration.
As shown in Figure 1; The electronic police front-end platform total management system that the present invention is based on ARM comprises microcontroller circuit, power circuit, coil information acquisition circuit, red light information acquisition circuit, host communication circuit and power supply integrated management circuit; It wherein is the control core with the microcontroller circuit; The signal of its receiving coil information acquisition circuit and red light information acquisition circuit communicates through host communication circuit and host computer; Power supply integrated management circuit is controlled the power supply of each parts in the front-end platform through the steering order that host communication circuit receives host computer; Power circuit is that each several part provides working power.
As shown in Figure 7; Power supply integrated management circuit comprises triode Q5 and relay K 4; Wherein, the base stage of triode Q5 is through the signal output part of optocoupler U17 connection microcontroller circuit, and the emitter of triode Q5 links to each other with working power; Collector links to each other with the coil of relay K 4, and the contact of relay K 4 is located in the power control loop of front-end equipment.When system carried out power management as required, microprocessor was through power management output port OUT1 output low level, optocoupler U17 action; The 4 pin states of optocoupler U17 are low level; Triode Q5 conducting, coil input end 2 pin and 4 pin of relay K 4 flow through electric current, relay K 4 actions; When the power supply of front end equipment (for example light filling unit, temperature conditioning unit, video camera and host computer etc.) was received terminal U4, power connection/disconnection had just been accomplished in the closure/disconnection of relay.
As shown in Figure 3, power circuit has the DC-DC module, is located between power supply integrated management circuit, red light information acquisition circuit, host communication circuit, coil information acquisition circuit and microcontroller circuit and the power supply separately.
In order to reach electric independence, the power supply that uses in each circuit of system is all isolated next, has guaranteed wherein a certain circuit like this because reasons such as high pressure cause when damaging, and other circuit can not be damaged, and reduce loss.Employing+12V of system and the input of+5V two-way.+ 12V is through two DC-DC module H1, H2; With front end power supply integrated management circuit power (A group); Red light information acquisition circuit power supply (B group); Main-machine communication unit (C group) isolates each other, and+5V isolates coil information acquisition circuit power supply and microcontroller circuit power supply through DC-DC module of H3 each other.
As shown in Figure 4; Said coil information acquisition circuit comprises the two-stage amplifying circuit that is formed by the first triode Q200 and the second triode Q202; The base stage of the first triode Q200 is connected to the coil status signal of wagon detector output, and the collector of the second triode Q202 is connected to the inspection car signal input part of microcontroller through optocoupler U200.
The coil state of wagon detector output is through J3 mouth switch-on coil information acquisition circuit, if on the coil during no vehicle, the state of J3 mouth is a high level, the first triode Q200 conducting; The second triode Q202 ends, and optocoupler U200 is failure to actuate, and the coil information input port IO1 of microcontroller is a high level; If when on the coil vehicle being arranged, the state that vehicle checker outputs to the J3 mouth is a low level, Q200 ends; The Q202 conducting, optocoupler U200 action, the coil information input port IO1 of microcontroller is a low level.Microcontroller has judged whether the car process through the height state that detects IO1; Produce a status information unit; Program is according to the difference of mode of operation; Use this status information unit to accomplish unicoil respectively and trigger, the triple coil speed measurement treatment, and result sent to host computer through host communication circuit.Shown in Figure 4 is the circuit diagram of the 1st passage of coil information acquisition, and the 2nd passage～the 32nd passage is identical with the 1st channel circuit.
As shown in Figure 5; Said red light information acquisition circuit comprises rectifier D9, reducing transformer, wave filter, voltage comparator U1 and triode Q1; Wherein the input end of rectifier D9 receives the signal lamp state of traffic signaling equipment output; Output terminal inputs to voltage comparator U1 through reducing transformer, wave filter, and the high level or the low level of voltage comparator U1 output link to each other with triode Q1 base stage, and the collector of triode Q1 is connected to the red light information input port of microcontroller through optocoupler U2.
The signal lamp state of traffic signaling equipment output inputs to the red light information acquisition circuit through HD_L and two terminals of HD_N, when signal lamp is red light, produces the alternating voltage of 220V between HD_L and the HD_N; Through becoming into DC voltage, R23, R25 after the D9 full-bridge rectification; R27 carries out step-down to this DC voltage, and the low-voltage that obtains is passed through L29 again, the filtering of C21; Be input in the U1 voltage comparator, compare with the red light reference voltage that is provided with, if greater than reference voltage.The 4 pin output low levels of U1 then, the Q1 conducting, optocoupler U2 action, the red light information input port HD1 of microcontroller is a low level, microcontroller will be formed the red light information data, pass through host communication circuit and send to host computer.When signal lamp is green light, there is not voltage between HD_L and the HD_N, 1 pin of U1 is lower than reference voltage; 4 pin output high level; Q1 ends, and optocoupler U2 is failure to actuate, and the red light information input port HD1 of microcontroller is a high level; Microcontroller will be formed the green light information data, send to host computer through host communication circuit
The advantage of this circuit: the AC relay mode is used in traditional red light information acquisition; Because relay is to lean on the mechanical action of spring leaf to accomplish triggering; So easy ageing is damaged (the almost annual replacing primary relay that just needs); When the red light voltage of exporting because external voltage is unstable when teleseme was lower than 220V, relay detected less than red light information sometimes, has reduced the correctness of red light information.And this circuit is electronization design fully, uses the mechanical system of contact to compare with relay, has more reliability; And can realize wide voltage detecting; Through actual measurement, the red light information acquisition circuit can collect the red light voltage between 130V～275V, has guaranteed the correctness of red light information.
Shown in Figure 5 is the circuit diagram of the 1st passage of red light information acquisition, and the 2nd passage～the 16th passage is identical with the 1st channel circuit.
Show that like Fig. 6 said host communication circuit comprises two optic coupling elements, when system's transmission information was given host computer, the input end of the first optocoupler U4 received the Transistor-Transistor Logic level signal of microcontroller circuit, and output terminal is exported 232 level signals to host computer; When system received the information of host computer transmission, the second optocoupler U7 was through pull-up resistor R7 output Transistor-Transistor Logic level.
232 traditional communications use the MAX232 chip to accomplish the conversion between Transistor-Transistor Logic level and 232 level, but work as 232 chip operations in two-forty, under the high-level efficiency, are easy to damage, and for example baud rate is 115200, sends when being spaced apart 20ms.And the host communication circuit among the present invention is accomplished the conversion between Transistor-Transistor Logic level and 232 level through the mode of light-coupled isolation, because the photoelectricity blanketing effect of optic coupling element, so under the two-forty high-level efficiency, still can move reliably.When system's transmission information is given host computer, through the TXD0 mouth information is outputed to host communication circuit, first optocoupler U4 process is used C_-12V, C_+12V, C_GND accomplishes the conversion of Transistor-Transistor Logic level to 232 level; When system received the information of host computer transmission, the second optocoupler U7 exported Transistor-Transistor Logic level through using pull-up resistor R7 on 6 pin.
As shown in Figure 2, what microprocessor adopted is to contain the 512KB in-chip FLASH, 32 arm processor chip LPC1768 of 64KB ram in slice.The corresponding reset circuit that has been equipped with, the JTAG debug circuit.Microprocessor receives the coil status signal from the output of coil information acquisition circuit through IO1～IO32 input port; After perhaps receiving the red signal of red light information acquisition circuit output through HD1～HD16 input port; According to the mode of operation of setting; Signal is carried out classification processing, then result is added sign after, send host computer to through telecommunication circuit.
The effect of toggle switch S1 is the mode of operation that system is set, and 16 kinds of mode of operations can be set altogether.
Port J112 is the open alarm interface; When needing this function; Can this terminal be inserted at the two ends of cabinet door contact switch, whether microprocessor detects cabinet door through 91 pin and opens or close, and sends to host computer to the state of cabinet door then and reminds operating personnel to note.
Shown in Fig. 8 A, its system software flow process of electronic police front end total management system based on ARM disclosed by the invention is after system powers on; Software carries out initial work, comprises the microprocessor relevant device that configuration uses, and the initial value of variable is set; Read the setting of code switch then, judge which kind of mode of operation of entering according to being provided with, under the pattern of making a dash across the red light; Software reads the state of signal information input port HD1～HD16; Different according to state then, form red signal information and green light signals information respectively, send to host computer after having formed.
Under the unicoil pattern, the state of software read coil information input port IO1～IO32 if wherein the IO state of certain passage is a low level, is formed the corresponding trigger message of this passage so, sends to host computer after having formed.
Shown in Fig. 8 B, under the triple coil pattern, it is a track that per three coils are compiled, and 32 coils can be weaved into 10 tracks altogether, with the coil 1 in a track, and coil 2, coil 3 is an example, vehicle passes through coil 1, coil 2, coil 3 successively.When vehicle sailed coil 1 into, IO1 was low, and actuating coil 1 counter begins counting, and when vehicle sailed coil 2 into, IO2 was low.Stop the counting of coil 1 counter, and the value in current coil 1 counter under preserving, actuating coil 2 counters begin counting simultaneously.When vehicle sailed coil 3 into, IO3 was low, stopped coil 2 rolling counters forwards; And the value of coil 2 counters and coil 1 counter compared, get wherein higher value as time value, because the distance of coil is fixed; Obtained vehicle just can calculate vehicle through time interval of two coils speed; After system draws the time interval, will form the 1st track information that tests the speed the time interval, send to host computer after having formed.
Shown in Fig. 8 C, the temperature conditioning unit power supply control program is all arranged under every kind of mode of operation, system is through the value of reading temperature sensor; Obtain current temperature value; Compare with upper temperature limit and lowest temperature again,, then connect fan power supply if current temperature value is higher than upper temperature limit; If current temperature is lower than lowest temperature, then connect heater power source.
Shown in Fig. 8 D, the Power Supply Monitoring program is all arranged under every kind of mode of operation in operation.Microprocessor communicates through host communication circuit and host computer, and microprocessor is to interrupt receiving the order that host computer sends through serial ports, and host computer is under situation in proper working order; Every interval can be sent a subcommand A in 5 minutes and given microprocessor, after microprocessor is received order A, thought that host computer is in proper working order at present; Need not cut off the power supply to it; If the software of host computer breaks down, in the time of can not sending order A, microprocessor did not receive order A in 10 minutes; Microprocessor thinks that fault has appearred in host computer so, be to restarting after its 5 seconds of cutting off the power supply.When upper computer detection when video camera can not normally be captured, send order B and give microprocessor, microprocessor receives orders behind the B, video camera is cut off the power supply restart after 5 seconds.When host computer need be opened light filling unit (adopting the LED lamp to carry out light filling), microprocessor can be received the order C from host computer, connects the power supply of light filling unit.
Claims (10)
1. electronic police front-end platform total management system based on ARM; It is characterized in that: comprise microcontroller circuit, power circuit, coil information acquisition circuit, red light information acquisition circuit, host communication circuit and power supply integrated management circuit; It wherein is the control core with the microcontroller circuit; The signal of its receiving coil information acquisition circuit and red light information acquisition circuit communicates through host communication circuit and host computer; Power supply integrated management circuit is controlled the power supply of each parts in the front-end platform through the steering order that host communication circuit receives host computer; Power circuit is that each several part provides working power.
2. by the described electronic police front-end platform total management system of claim 1 based on ARM; It is characterized in that: said power supply integrated management circuit comprises triode (Q5) and relay (K4); Wherein, the base stage of triode (Q5) is through the signal output part of optocoupler (U17) connection microcontroller circuit, and the emitter of triode (Q5) links to each other with working power; Collector links to each other with the coil of relay (K4), and the contact of relay (K4) is located in the power control loop of front-end equipment.
3. by the described electronic police front-end platform total management system of claim 1 based on ARM; It is characterized in that: said power circuit has the DC-DC module, is located between power supply integrated management circuit, red light information acquisition circuit, host communication circuit, coil information acquisition circuit and microcontroller circuit and the power supply separately.
4. by the described electronic police front-end platform total management system of claim 1 based on ARM; It is characterized in that: said coil information acquisition circuit comprises the two-stage amplifying circuit that is formed by first triode (Q200) and second triode (Q202); The base stage of first triode (Q200) is connected to the coil status signal of wagon detector output, and the collector of second triode (Q202) is connected to the inspection car signal input part of microcontroller through optocoupler (U200).
5. by the described electronic police front-end platform total management system of claim 1 based on ARM; It is characterized in that: said red light information acquisition circuit comprises rectifier (D9), reducing transformer, wave filter, voltage comparator (U1) and triode (Q1); Wherein the input end of rectifier (D9) receives the signal lamp state of traffic signaling equipment output; Output terminal inputs to voltage comparator (U1) through reducing transformer, wave filter; The high level or the low level of voltage comparator (U1) output link to each other with triode (Q1) base stage, and the collector of triode (Q1) is connected to the red light information input port of microcontroller through optocoupler (U2).
6. by the described electronic police front-end platform total management system of claim 1 based on ARM; It is characterized in that: said host communication circuit comprises two optic coupling elements; When system's transmission information is given host computer; The input end of first optocoupler (U4) receives the Transistor-Transistor Logic level signal of microcontroller circuit, and output terminal is exported 232 level signals to host computer; When system received the information of host computer transmission, second optocoupler (U7) was through pull-up resistor (R7) output Transistor-Transistor Logic level.
7. by the described electronic police front-end platform total management system of claim 1 based on ARM; It is characterized in that: microprocessor adopts the 512KB in-chip FLASH; 32 arm processor chips of 64KB ram in slice, based on the CORTEX-M3 of ARM family kernel, operating frequency is 100MHz.
8. by the described electronic police front-end platform total management system based on ARM of claim 1, it is characterized in that: having the integrated management of electronic police front-end platform in the microprocessor is control flow chart, and its control procedure is:
When upper computer detection when video camera can not normally be captured, send order B and give microprocessor;
Microprocessor interrupts receiving the order that host computer sends through serial ports;
Microprocessor receives orders behind the B, and video camera is carried out power-off restarting, withdraws from serial ports and interrupts, and finishes once the power control procedure to video camera.
9. by the described electronic police front-end platform total management system of claim 8, it is characterized in that based on ARM:
The B if microprocessor does not receive orders then judges whether to receive order C;
If receive order C, when promptly host computer need be opened the light filling unit, then microprocessor was connected the power supply of light filling unit, withdrawed from serial ports and interrupted, and finished once the power control procedure to the light filling unit.
10. by the described electronic police front-end platform total management system of claim 9, it is characterized in that based on ARM:
If microprocessor does not receive order C, then break off the power supply of light filling unit;
Continue and judge whether to receive order A;
If do not receive order A at the appointed time, then microprocessor thinks that fault has appearred in host computer, to its power-off restarting;
Withdraw from serial ports and interrupt, finish once power control procedure host computer.
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| CN201159943Y (en) * | 2007-12-19 | 2008-12-03 | 中国科学院自动化研究所 | Road traffic signal controller |
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| CN102097005A (en) * | 2011-02-01 | 2011-06-15 | 吉林大学 | Intelligent and integrated traffic signal controller |
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| CN201159943Y (en) * | 2007-12-19 | 2008-12-03 | 中国科学院自动化研究所 | Road traffic signal controller |
| CN101246644A (en) * | 2007-12-28 | 2008-08-20 | 北京航空航天大学 | Fixed intersection electric police grasp shoot device |
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Application publication date: 20120711 |