CN100546847C - A kind of flasher flash controller and control method thereof - Google Patents
A kind of flasher flash controller and control method thereof Download PDFInfo
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- CN100546847C CN100546847C CNB2007100096339A CN200710009633A CN100546847C CN 100546847 C CN100546847 C CN 100546847C CN B2007100096339 A CNB2007100096339 A CN B2007100096339A CN 200710009633 A CN200710009633 A CN 200710009633A CN 100546847 C CN100546847 C CN 100546847C
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Abstract
The invention discloses a kind of flasher flash controller and control method thereof, be to be provided with MCU control circuit and voltage in controller inside, current sampling circuit and be used for voltage to certain loads, the control interface that current characteristics is provided with and stores, current parameters value in can the memory controller operating voltage range under the steering indicating light load specific voltage, and according to different steering indicating light load request adjustment data values, thereby can in operating voltage range, discern the open fault of little electric current steering indicating light load (as the LED lamp load), avoid traditional flash controller in operating voltage range, can't discern little electric current lamp load and changed the drawback of being brought, desired turn sign flash of light of automobile and the flash of light of king light indicating fault have been realized, satisfied the functional requirement that little current loading is applied to flasher, had simple in structure, easily realize, convenient and practical characteristics.
Description
Technical field
The present invention relates to a kind of car light control setup, particularly relate to a kind of flasher flash controller and control method thereof.
Background technology
Flasher is power actuated vehicle gives bulletin when turning or overtaking other vehicles to the front and back vehicle a kind of signal of interest device, its working condition directly has influence on safety traffic, therefore, the control of steering indicating light is required both to have comprised the flash of light control of turn sign, comprised that also the fault of king light shows.
At present, the flasher flash controller of generally acknowledging generally adopts special-purpose flash of light IC module, adopt the variation of sample resistance monitoring load electric current, external RC control output flash rate, thus realize desired turn sign flash of light of automobile and the flash of light of king light indicating fault.
Fig. 1 is the schematic diagram of the present motor turning lamp controller of using always.In Fig. 1, the special-purpose control of flash controller 1 ' mainly comprise flash of light IC module 2 ', output relay 3 ', sample resistance Rs, hunting of frequency be with resistance R1 and capacitor C 1, leading foot 49, leading foot 49a and leading foot 31.Peripheral circuit is connected to leading foot 49 and connects dc power anode, and leading foot 31 connects dc power cathode, and leading foot 49a switches through to signal controlled switch K1, and is connected with the steering indicating light load by K switch 1.
When turn signal swich K1 connects steering indicating light, flash controller 1 ' can detect this signal and start flash of light output.Flash controller 1 ' can export two kinds of flash raties is respectively turn sign flash rate f1 and king light indicating fault flash rate f2.Flash rate f1 and flash rate f2 are by the value decision of resistance R 1 and capacitor C 1.
The special-purpose control of flash of light IC module 2 ' gather load current by sample resistance Rs, by internal comparator decision output frequency, as load current output turn sign flash rate f1 during greater than a certain value I, when king light generation open fault, cause load current less than particular magnitude I, thereby output king light indicating fault flash rate f2 ≈ is 2.2 * f1.Flash rate output is by the special-purpose control IC module 2 of glistening ' send control signal to drive output relay 3 ' realization.
In traditional 12V voltage automotive system, the power of monolateral front and back steering indicating light is respectively 21W, side steering indicating light installed power is 5W, under the 12V voltage condition, front and back steering indicating light electric current is respectively 21W/12V=1.75A, side steering indicating light installed electric current is 5W/12V=0.42A, and monolateral steering indicating light total current is 1.75A+1.75A+0.42A=3.92A.Because, the operating voltage range of 12V voltage automotive system is generally 9V～16V, the monolateral total steering indicating light of actual measurement electric current under the 9V voltage condition is about 1.51A+1.51A+0.36A=3.38A, and electric current is about 2.1A+2.1A+0.47A=4.67A under the 16V voltage condition.When a 21W king light generation open fault occurring, under the voltage of 9V, 12V, 16V, fault current is respectively 1.87A, 2.17A, 2.57A.Be not more than at the car light power deviation ± 3%, sample resistance Rs deviation is not more than ± 3% situation under, we can be by adjusting the size of sample resistance Rs, choose a suitable sampling value, make when the load current of gathering be no king light open fault during greater than a certain value I, when the load current of gathering during less than a certain value I for the king light open fault is arranged, thereby make flasher relay can realize in 9V～16V voltage range that the desired turn sign of automobile glistens and the king light indicating fault glistens.
Because of energy-conservation needs, at present increasing flasher adopts LED lamp (a kind of little electric current lamp load), LED lamp load electric current may diminish to below the 0.3A, when front directional or rear directional are the LED lamp, we are example with the 12V electrical voltage system still, getting the LED electric current is constant current 0.4A, at 9V, 12V, under the voltage of 16V, monolateral steering indicating light total current is respectively 2.27A, 2.57A, 2.97A, when LED king light generation open fault, at 9V, 12V, under the voltage of 16V, fault current is respectively 1.87A, 2.17A, 2.57A, because of monolateral steering indicating light total current and fault current exist alternately, can't choose suitable sampling value and in 9V～16V voltage range, realize LED king light fault recognition.
Therefore, the flash controller of prior art can't be discerned the open fault of little electric current steering indicating light in the operating voltage range of automobile, thus the limitation that has caused flash controller to use.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of flasher flash controller and control method thereof are provided, current parameters value in can the memory controller operating voltage range under the steering indicating light load specific voltage, and according to different steering indicating light load request adjustment data values, to discern the open fault of little electric current master steering indicating light load, avoid traditional flash controller in operating voltage range, can't discern little electric current lamp load and changed the drawback of being brought, desired turn sign flash of light of automobile and the flash of light of king light indicating fault have been realized, thereby improved the applicability of flash controller, had simple in structure, easily realize, convenient and practical characteristics.
The technical solution adopted for the present invention to solve the technical problems is: a kind of flasher flash controller, the leading foot that comprises housing, is installed in the electronic circuit part in the housing and is arranged on the housing and partly is connected with described electronic circuit;
Its leading foot comprises first pin, second pin that are used to connect the direct supply positive and negative electrode, is used for connecting the 3rd pin of steering indicating light load and being used to accept to import the 4th pin that control signal is set by switch;
Its electronic circuit partly comprises:
One MCU control circuit its role is to the signal of input is calculated, analyzes, handles, and exports cooresponding control signal, and it is built-in with memory cell to realize the storage to steering indicating light on-load voltage, current characteristics;
One voltage sampling circuit its role is to gather the on-load voltage data;
One current sampling circuit its role is to gather the load current data;
One sample resistance, its role is to provides the sample rate current signal to current sampling circuit;
One output relay, its role is to provides out/breaks control to the steering indicating light load circuit;
The input of MCU control circuit is provided with control end and is connected with the 4th pin, to accept to be provided with the input of control signal; Voltage sampling circuit is connected between the MCU control circuit and first pin, and voltage sampling circuit is by gathering load voltage signal from first pin, and this load voltage signal is converted to digital signal is defeated by the MCU control circuit; Sample resistance is connected and first pin and the 3rd pin in power supply, steering indicating light loop that load constitutes between, to gather load current signal; Current sampling circuit is connected between the input of the output of sample resistance and MCU control circuit, and current sampling circuit is defeated by the MCU control circuit after the output signal of sample resistance is converted to digital signal; The input coil of output relay is connected with the output of MCU control circuit, the sound contact of output relay is connected and the sample resistance and the 3rd pin in power supply, steering indicating light loop that load constitutes between, be subjected to the control of MCU control circuit output signal, control opening/breaking of power supply, steering indicating light load circuit with the adhesive/disconnection of sound contact.
A kind of method of controlling based on the motor turning flick of lamp of above-mentioned controller comprises being provided with and two processes of real control:
At setting up procedure, it comprises the steps:
A. preset have turn sign flash rate f1, the two group pulse control signals of king light indicating fault flash rate f2 are stored in the memory cell of MCU control circuit;
B. the positive pole of power supply is connected in first pin of controller, the negative pole of power supply is connected in second pin of controller, specific load is connected between the 3rd pin and second pin of controller, and applies the control signal that is used to be provided with at the 4th pin place of controller;
C. the voltage sampling circuit of controller is gathered load voltage signal, the current sampling circuit of controller obtains the loaded work piece current signal by sample resistance Rs, and the load voltage signal of voltage sampling circuit output becomes one group of data that become corresponding relation about on-load voltage value and loaded work piece current value by the processing unit processes of MCU control circuit respectively with the loaded work piece current signal of current sampling circuit output;
D. in operating voltage range, constantly change the size of on-load voltage value, repeating step c, obtain many groups of the different loads magnitude of voltage and become the data of one-to-one relationship about on-load voltage value and loaded work piece current value, these data are temporarily stored in the memory cell of MCU control circuit;
E. a wherein little electric current master steering indicating light of certain loads is arranged to open fault;
F. the voltage sampling circuit of controller is gathered load voltage signal, the current sampling circuit of controller obtains the load faulty current signal by sample resistance Rs, and the load voltage signal of voltage sampling circuit output becomes one group of data that become corresponding relation about on-load voltage value and load faulty current value by the processing unit processes of MCU control circuit respectively with the load faulty current signal of current sampling circuit output;
G. in operating voltage range, constantly change the size of on-load voltage value, repeating step f, obtain many groups of the different loads magnitude of voltage and become the data of one-to-one relationship about on-load voltage value and load faulty current value, these data are temporarily stored in the memory cell of MCU control circuit;
H. in the MCU of controller control circuit, the processing unit of MCU control circuit is transferred loaded work piece current value data and the load faulty current value data under the same on-load voltage value respectively from memory cell, and be used as duty ratio than the current value data, and then obtain one group of data that become corresponding relation about on-load voltage value and duty ratio than current value with getting intermediate value after loaded work piece current value and the addition of load faulty current value;
I. in operating voltage range, the processing unit of MCU control circuit reads loaded work piece current value data and the load faulty current value data under the different loads magnitude of voltage respectively one by one from memory cell, and be used as corresponding to the duty ratio under the different loads magnitude of voltage than the current value data getting intermediate value after loaded work piece current value data and the addition of load faulty current value data one by one, and then obtain many groups of the different loads magnitude of voltage and become the data of one-to-one relationship than current value about on-load voltage value and duty ratio, and with these data storage in the memory cell of MCU control circuit;
J. after setting up procedure is finished, the control signal that is used to be provided with that the 4th pin place of controller applies is removed;
In real control process, it comprises the steps:
K. the positive pole of power supply is connected in first pin of controller, the negative pole of power supply is connected in second pin of controller, specific load is connected between the 3rd pin and second pin of controller, when the K switch 1 of steering indicating light load is closed, the detection port of MCU control circuit can detect this signal and start flash of light output, when output relay is in on-state, current sampling circuit obtains the actual current value of steering indicating light load by sample resistance Rs, and input to the MCU control circuit, simultaneously, voltage sampling circuit sampling power line voltage also inputs to the MCU control circuit as the actual load voltage value;
1. in the MCU control circuit, the processing unit of MCU control circuit is transferred the DS Data Set that becomes one-to-one relationship about on-load voltage value and duty ratio than current value one by one from memory cell, wherein on-load voltage value and actual load voltage value are compared, find out identical with the actual load voltage value one group and become the data of corresponding relation or close two groups of data that become corresponding relation about on-load voltage value and duty ratio than current value in front and back with duty ratio than current value about the on-load voltage value, when the on-load voltage value of transferring in actual load voltage value and the memory cell is consistent, continue next step, otherwise go to step n;
The processing unit of m.MCU control circuit compares with the duty ratio of being chosen the actual current value of steering indicating light load than current value, when actual current value greater than duty ratio during than current value, the MCU control circuit is exported the pulse control signal with turn sign flash rate f1 to output relay, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f1; When actual current value less than duty ratio during than current value, the MCU control circuit is exported the pulse control signal with king light indicating fault flash rate f2 to output relay, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f2;
The processing unit of n.MCU control circuit is according to the two groups of data that become corresponding relation about on-load voltage value and duty ratio than current value in close front and back, calculate the load faulty electric current computing value that is in two groups of data centres corresponding to this actual load voltage according to the linear algorithm mode, and the actual current value and the load faulty electric current computing value of steering indicating light load compared, when actual current value during greater than load faulty electric current computing value, the MCU control circuit is exported the pulse control signal with turn sign flash rate f1 to output relay, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f1; When actual current value during less than load faulty electric current computing value, the MCU control circuit is exported the pulse control signal with king light indicating fault flash rate f2 to output relay, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f2.
A kind of flasher flash controller of the present invention and control method thereof, be to be provided with MCU control circuit and voltage in controller inside, current sampling circuit, can be provided with the recording controller operating voltage range in load current size under each voltage, and can be according to different steering indicating light load request adjustment data values, compare by actual steering lamp load electric current under each operating voltage and MCU control circuit internal record current value during flash controller work, when actual current when setting electric current, judge that then open fault appears in the steering indicating light load, thereby the flash of light of output king light indicating fault realizes desired turn sign flash of light of automobile and the flash of light of king light indicating fault.
A kind of flasher flash controller of the present invention and control method thereof, in controller, be provided with load current characteristic interface is set, control by interface, realized voltage to certain loads, the setting of current characteristics and storage, compare by actual steering lamp load current characteristics in operating voltage range and set current characteristics, decide to output relay and export the pulse control signal that the pulse control signal with turn sign flash rate f1 still has king light indicating fault flash rate f2, realized the requirement of desired turn sign flash of light of automobile and the flash of light of king light indicating fault.
The invention has the beneficial effects as follows, owing to adopted in controller inside and be provided with MCU control circuit and voltage, current sampling circuit and be used for voltage to certain loads, the control interface that current characteristics is provided with and stores, current parameters value in can the memory controller operating voltage range under the steering indicating light load specific voltage, and according to different steering indicating light load request adjustment data values, thereby can in operating voltage range, discern the open fault of little electric current steering indicating light load (as the LED lamp load), avoid traditional flash controller in operating voltage range, can't discern little electric current lamp load and changed the drawback of being brought, desired turn sign flash of light of automobile and the flash of light of king light indicating fault have been realized, satisfied the functional requirement that little current loading is applied to flasher, had simple in structure, easily realize, convenient and practical characteristics.
Below in conjunction with drawings and Examples the present invention is described in further detail; But a kind of flasher flash controller of the present invention and control method thereof are not limited to embodiment.
Description of drawings
Fig. 1 is the schematic circuit diagram of existing flasher flash controller
Fig. 2 is the schematic circuit diagram according to flasher flash controller embodiment of the present invention;
Fig. 3 is the schematic circuit diagram of current sampling circuit of the present invention.
The specific embodiment
Referring to shown in Figure 2, a kind of flasher flash controller of the present invention, the leading foot that comprises housing, is installed in the electronic circuit part in the housing and is arranged on the housing and partly is connected with described electronic circuit;
The 3rd pin that the leading foot of this controller 1 comprises that first pin that is used to connect dc power anode is a leading foot 49, second pin that is used to connect dc power cathode is a leading foot 31, be used for connecting by steering indicating light master cock K1 the steering indicating light load is leading foot 49a, to be used to accept to import the 4th pin that control signal is set be leading foot C1;
The electronic circuit of this controller 1 partly comprises:
One MCU control circuit 2 its role is to the signal of input is calculated, analyzes, handles, and exports cooresponding control signal, and it is built-in with memory cell to realize the storage to steering indicating light on-load voltage, current characteristics;
One voltage sampling circuit 5 its role is to gather the on-load voltage data;
One current sampling circuit 4 its role is to gather the load current data;
One sample resistance Rs, its role is to provides the sample rate current signal to current sampling circuit 4;
One output relay 3, its role is to provides out/breaks control to the steering indicating light load circuit;
It is that leading foot C1 is connected with the 4th pin that the input of MCU control circuit 2 is provided with control end, to accept to be provided with the input of control signal; Voltage sampling circuit 5 is connected MCU control circuit 2 and first pin is between the leading foot 49, voltage sampling circuit 5 is by being that leading foot 49 is gathered load voltage signals from first pin, and this load voltage signal is converted to digital signal is defeated by MCU control circuit 2; Sample resistance Rs is connected and first pin in power supply, steering indicating light loop that load constitutes is that leading foot 49 and the 3rd pin are between the leading foot 49a, to gather load current signal; Current sampling circuit 4 is connected between the input of the output of sample resistance Rs and MCU control circuit 2, and current sampling circuit 4 is defeated by MCU control circuit 2 after the output signal of sample resistance Rs is converted to digital signal; The input coil of output relay 3 is connected with the output of MCU control circuit 2, the sound contact of output relay 3 is connected and the sample resistance Rs and the 3rd pin 49a in power supply, steering indicating light loop that load constitutes between, be subjected to the control of MCU control circuit 2 output signals, control opening/breaking of power supply, steering indicating light load circuit with the adhesive/disconnection of sound contact.
As shown in Figure 3, current sampling circuit 4 mainly comprises resistance R in1, Rin2, Rf1, Rf2, amplifier IC1 and A/D convertor circuit 7, and the load 6 of peripheral circuit is the steering indicating light load.Resistance R in1=Rin2 can be set, Rf1=Rf2, when load 6 is connected, the voltage at sample resistance Rs two ends is Vs, IC1 output voltage V out=Vs (Rin1/Rf1) then, A/D convertor circuit 7 converts the Vout value to digital signal and exports to 2 processing of MCU control circuit, thereby realizes the sampling to load current.
Leading foot C1 is provided with the control pin for the steering indicating light load current characteristic, when carrying out load current characteristic when being provided with, requirement according to flash controller 1 applies control signal at leading foot C1 place, and the requirement according to leading foot C1 sequential simultaneously applies voltage, the electric current that meets the steering indicating light load characteristic by leading foot 49, leading foot 49a, leading foot 31.On-load voltage is applied between leading foot 49 and the leading foot 31, load current flows to: positive source → leading foot 49 → sample resistance Rs → output relay 3 → leading foot 49a → turn signal swich K1 → steering indicating light load → leading foot 31 → power cathode, at this moment, MCU control circuit 2 is stored voltage, the current characteristics of steering indicating light load by voltage, current sample, finishes the setting of load current characteristic.
Be example with traditional 12V voltage automotive system below, further specify the method for the motor turning flick of lamp control of controller of the present invention, specific load is a LED steering indicating light, 21W and the common steering indicating light of 5W, certainly the specific load of indication also can be the lamp of other configuration mode, to different certain loads, can be by controller of the present invention and control method thereof, the current characteristics of this certain loads in operating voltage range is provided with and stored, the control of then actual value and the value of setting being glistened after relatively.
A kind of method of controlling based on the motor turning flick of lamp of above-mentioned controller comprises being provided with and two processes of real control:
At setting up procedure, it comprises the steps:
A. preset have turn sign flash rate f1, the two group pulse control signals of king light indicating fault flash rate f2 are stored in the memory cell of MCU control circuit 2;
B. the positive pole of power supply is connected in first pin 49 of controller, the negative pole of power supply is connected in second pin 31 of controller, with a specific load (selected LED steering indicating light, 21W and the common steering indicating light of 5W) be connected between the 3rd pin 49a and second pin 31 of controller, and apply the control signal that is used to be provided with at the 4th pin C1 place of controller; Steering indicating light has left and right steering indicating light usually, therefore, the LED steering indicating light, the common steering indicating light of 21W and 5W has two groups respectively, when K switch 1 is closed, can select left side winding logical or the right winding logical since left and right two groups identical, therefore, only need be provided with one group and get final product;
C. the voltage sampling circuit 5 of controller is gathered load voltage signal, the current sampling circuit 4 of controller obtains the loaded work piece current signal by sample resistance Rs, and the load voltage signal of voltage sampling circuit 5 outputs becomes one group of data that become corresponding relation about on-load voltage value and loaded work piece current value by the processing unit processes of MCU control circuit respectively with the loaded work piece current signal of current sampling circuit 4 outputs; Such as, power line voltage is 12V, and the LED lamp current is made as constant current 0.4A, and then monolateral total steering indicating light electric current is 2.57A;
D. in operating voltage range (as constantly changing the size of on-load voltage value in the 9V～16V), repeating step c, obtain many groups of the different loads magnitude of voltage and become the data of one-to-one relationship about on-load voltage value and loaded work piece current value, these data are temporarily stored in the memory cell of MCU control circuit 2; Such as, under 9V, 12V, 16V voltage, monolateral total steering indicating light electric current is respectively 2.27A, 2.57A, 2.97A, then obtains three groups of data (9V, 2.27A), (12V, 2.57A), (16V, 2.97A) that become one-to-one relationship about the on-load voltage value with the loaded work piece current value; Certainly, in the actual setting up procedure more data group can be set;
E. a wherein little electric current master steering indicating light (LED steering indicating light) of certain loads is arranged to open fault;
F. the voltage sampling circuit 5 of controller is gathered load voltage signal, the current sampling circuit 4 of controller obtains the load faulty current signal by sample resistance Rs, and the load voltage signal of voltage sampling circuit 5 outputs becomes one group of data that become corresponding relation about on-load voltage value and load faulty current value by the processing unit processes of MCU control circuit 2 respectively with the load faulty current signal of current sampling circuit 4 outputs; Such as, power line voltage is 12V, and the LED lamp current is made as constant current 0.4A, and then monolateral total steering indicating light fault current is 2.17A;
G. in operating voltage range, constantly change the size of on-load voltage value, repeating step f, obtain many groups of the different loads magnitude of voltage and become the data of one-to-one relationship about on-load voltage value and load faulty current value, these data are temporarily stored in the memory cell of MCU control circuit 2; Such as, under 9V, 12V, 16V voltage, monolateral total steering indicating light fault current is respectively 1.87A, 2.17A, 2.57A, then obtains three groups of data (9V, 1.87A), (12V, 2.17A), (16V, 2.57A) that become one-to-one relationship about the on-load voltage value with the load faulty current value; Certainly, in the actual setting up procedure more data group can be set, still, should become being provided with of corresponding relation corresponding with on-load voltage value and loaded work piece current value, identical such as selected on-load voltage value;
H. in the MCU of controller control circuit 2, the processing unit of MCU control circuit 2 is transferred loaded work piece current value data and the load faulty current value data under the same on-load voltage value respectively from memory cell, and be used as duty ratio than the current value data, and then obtain one group of data that become corresponding relation about on-load voltage value and duty ratio than current value with getting intermediate value after loaded work piece current value and the addition of load faulty current value; Such as, under 12V voltage, the loaded work piece current value is 2.57A, and the load faulty current value is 2.17A, and then duty ratio is 2.37A just than current value;
I. in operating voltage range, the processing unit of MCU control circuit 2 reads loaded work piece current value data and the load faulty current value data under the different loads magnitude of voltage respectively one by one from memory cell, and be used as corresponding to the duty ratio under the different loads magnitude of voltage than the current value data getting intermediate value after loaded work piece current value data and the addition of load faulty current value data one by one, and then obtain many groups of the different loads magnitude of voltage and become the data of one-to-one relationship than current value about on-load voltage value and duty ratio, and with these data storage in the memory cell of MCU control circuit 2; Such as, under 9V, 12V, 16V voltage, the duty ratio that calculates is 2.07A, 2.37A, 2.77A than current value, then obtains three groups of data (9V, 2.07A), (12V, 2.37A), (16V, 2.77A) that become one-to-one relationship about on-load voltage value and duty ratio than current value;
J. after setting up procedure is finished, the control signal that is used to be provided with that the 4th pin C1 place of controller applies is removed;
In real control process, it comprises the steps:
K. the positive pole of power supply is connected in first pin 49 of controller, the negative pole of power supply is connected in second pin 31 of controller, specific load is connected between the 3rd pin 49a and second pin 31 of controller, when the K switch 1 of steering indicating light load is closed, the detection port of MCU control circuit 2 can detect this signal and start flash of light output, when output relay 3 is in on-state, current sampling circuit 4 obtains the actual current value of steering indicating light load by sample resistance Rs, and input to the MCU control circuit, simultaneously, voltage sampling circuit 5 sampling power line voltages also input to the MCU control circuit as the actual load voltage value;
1. in MCU control circuit 2, the processing unit of MCU control circuit 2 is transferred the DS Data Set that becomes one-to-one relationship about on-load voltage value and duty ratio than current value one by one from memory cell, wherein on-load voltage value and actual load voltage value are compared, find out identical with the actual load voltage value one group and become the data of corresponding relation or close two groups of data that become corresponding relation about on-load voltage value and duty ratio than current value in front and back with duty ratio than current value about the on-load voltage value, when the on-load voltage value of transferring in actual load voltage value and the memory cell is consistent, when being 12V as actual magnitude of voltage, continue next step, otherwise go to step n;
The processing unit of m.MCU control circuit 2 is that 2.37A compare with the duty ratio of being chosen than current value with the actual current value of steering indicating light load, when actual current value greater than duty ratio during than current value 2.37A, MCU control circuit 2 is exported the pulse control signal with turn sign flash rate f1 to output relay 3, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f1; When actual current value less than duty ratio during than current value 2.37A, there is the steering indicating light open fault, MCU control circuit 2 is exported the pulse control signal with king light indicating fault flash rate f2 to output relay 3, carries out adhesive/open circuited action with the sound contact of control output relay 3 according to flash rate f2;
N. in this case, such as, actual magnitude of voltage is 11V, the processing unit of MCU control circuit is according to the two groups of data (9V that become corresponding relation about on-load voltage value and duty ratio than current value in close front and back, 2.07A), (12V, 2.37A), calculate the load faulty electric current computing value that is in two groups of data centres corresponding to this actual load voltage according to the linear algorithm mode, and the actual current value and the load faulty electric current computing value of steering indicating light load compared, when actual current value during greater than load faulty electric current computing value, MCU control circuit 2 is exported the pulse control signal with turn sign flash rate f1 to output relay 3, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f1; When actual current value during less than load faulty electric current computing value, MCU control circuit 2 is exported the pulse control signal with king light indicating fault flash rate f2 to output relay 3, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f2.
A kind of flasher flash controller of the present invention and control method thereof, be to be provided with MCU control circuit 2 and voltage sampling circuit 5 in controller 1 inside, current sampling circuit 4, can be provided with the recording controller operating voltage range in load current size under each voltage, and can be according to different steering indicating light load request adjustment data values, compare by actual steering lamp load electric current under each operating voltage and MCU control circuit internal record current value during flash controller 1 work, when actual current when setting electric current, judge that then open fault appears in the steering indicating light load, thereby the flash of light of output king light indicating fault realizes desired turn sign flash of light of automobile and the flash of light of king light indicating fault.
A kind of flasher flash controller of the present invention and control method thereof, in controller, be provided with load current characteristic i.e. the 4th pin C1 of interface is set, control by interface, realized voltage to certain loads, the setting of current characteristics and storage, compare by actual steering lamp load current characteristics in operating voltage range and set current characteristics, decide to output relay 3 and export the pulse control signal that the pulse control signal with turn sign flash rate f1 still has king light indicating fault flash rate f2, realized the requirement of desired turn sign flash of light of automobile and the flash of light of king light indicating fault.
The foregoing description only is used for further specifying a kind of flasher flash controller of the present invention and control method thereof; but the present invention is not limited to embodiment; every foundation technical spirit of the present invention all falls in the protection domain of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. flasher flash controller, the leading foot that comprises housing, is installed in the electronic circuit part in the housing and is arranged on the housing and partly is connected with described electronic circuit;
Its leading foot comprises first pin, second pin that is used to connect dc power cathode that is used to connect dc power anode, the 3rd pin that is used for connecting by switch the steering indicating light load;
It is characterized in that: leading foot also comprises and is used to accept to import the 4th pin that control signal is set;
Its electronic circuit partly comprises:
One MCU control circuit its role is to the signal of input is calculated, analyzes, handles, and exports cooresponding control signal, and it is built-in with memory cell to realize the storage to steering indicating light on-load voltage, current characteristics;
One voltage sampling circuit its role is to gather the on-load voltage data;
One current sampling circuit its role is to gather the load current data;
One sample resistance, its role is to provides the sample rate current signal to current sampling circuit;
One output relay, its role is to provides out/breaks control to the steering indicating light load circuit;
The input of MCU control circuit is provided with control end and is connected with the 4th pin, to accept to be provided with the input of control signal; Voltage sampling circuit is connected between the MCU control circuit and first pin, and voltage sampling circuit is by gathering load voltage signal from first pin, and this load voltage signal is converted to digital signal is defeated by the MCU control circuit; Sample resistance is connected and first pin and the 3rd pin in power supply, steering indicating light loop that load constitutes between, to gather load current signal; Current sampling circuit is connected between the input of the output of sample resistance and MCU control circuit, and current sampling circuit is defeated by the MCU control circuit after the output signal of sample resistance is converted to digital signal; The input coil of output relay is connected with the output of MCU control circuit, the sound contact of output relay is connected and the sample resistance and the 3rd pin in power supply, steering indicating light loop that load constitutes between, be subjected to the control of MCU control circuit output signal, control opening/breaking of power supply, steering indicating light load circuit with the adhesive/disconnection of sound contact.
2. the method for the motor turning flick of lamp of a controller as claimed in claim 1 control is characterized in that: comprise being provided with and two processes of real control:
At setting up procedure, it comprises the steps:
A. preset have turn sign flash rate f1, the two group pulse control signals of king light indicating fault flash rate f2 are stored in the memory cell of MCU control circuit;
B. the positive pole of power supply is connected in first pin of controller, the negative pole of power supply is connected in second pin of controller, load is connected between the 3rd pin and second pin of controller, and applies the control signal that is used to be provided with at the 4th pin place of controller;
C. the voltage sampling circuit of controller is gathered load voltage signal, the current sampling circuit of controller obtains the loaded work piece current signal by sample resistance Rs, and the load voltage signal of voltage sampling circuit output becomes one group of data that become corresponding relation about on-load voltage value and loaded work piece current value by the processing unit processes of MCU control circuit respectively with the loaded work piece current signal of current sampling circuit output;
D. in operating voltage range, constantly change the size of on-load voltage value, repeating step c, obtain many groups of the different loads magnitude of voltage and become the data of one-to-one relationship about on-load voltage value and loaded work piece current value, these data are temporarily stored in the memory cell of MCU control circuit;
E. a wherein little electric current master steering indicating light of load is arranged to open fault;
F. the voltage sampling circuit of controller is gathered load voltage signal, the current sampling circuit of controller obtains the load faulty current signal by sample resistance Rs, and the load voltage signal of voltage sampling circuit output becomes one group of data that become corresponding relation about on-load voltage value and load faulty current value by the processing unit processes of MCU control circuit respectively with the load faulty current signal of current sampling circuit output;
G. in operating voltage range, constantly change the size of on-load voltage value, repeating step f, obtain many groups of the different loads magnitude of voltage and become the data of one-to-one relationship about on-load voltage value and load faulty current value, these data are temporarily stored in the memory cell of MCU control circuit;
H. in the MCU of controller control circuit, the processing unit of MCU control circuit is transferred loaded work piece current value data and the load faulty current value data under the same on-load voltage value respectively from memory cell, and be used as duty ratio than the current value data, and then obtain one group of data that become corresponding relation about on-load voltage value and duty ratio than current value with getting intermediate value after loaded work piece current value and the addition of load faulty current value;
I. in operating voltage range, the processing unit of MCU control circuit reads loaded work piece current value data and the load faulty current value data under the different loads magnitude of voltage respectively one by one from memory cell, and be used as corresponding to the duty ratio under the different loads magnitude of voltage than the current value data getting intermediate value after loaded work piece current value data and the addition of load faulty current value data one by one, and then obtain many groups of the different loads magnitude of voltage and become the data of one-to-one relationship than current value about on-load voltage value and duty ratio, and with these data storage in the memory cell of MCU control circuit;
J. after setting up procedure is finished, the control signal that is used to be provided with that the 4th pin place of controller applies is removed;
In real control process, it comprises the steps:
K. the positive pole of power supply is connected in first pin of controller, the negative pole of power supply is connected in second pin of controller, load is connected between the 3rd pin and second pin of controller, when the K switch 1 of steering indicating light load is closed, the detection port of MCU control circuit can detect this signal and start flash of light output, when output relay is in on-state, current sampling circuit obtains the actual current value of steering indicating light load by sample resistance Rs, and input to the MCU control circuit, simultaneously, voltage sampling circuit sampling power line voltage also inputs to the MCU control circuit as the actual load voltage value;
L. in the MCU control circuit, the processing unit of MCU control circuit is transferred the DS Data Set that becomes one-to-one relationship about on-load voltage value and duty ratio than current value one by one from memory cell, wherein on-load voltage value and actual load voltage value are compared, find out identical with the actual load voltage value one group and become the data of corresponding relation or close two groups of data that become corresponding relation about on-load voltage value and duty ratio than current value in front and back with duty ratio than current value about the on-load voltage value, when the on-load voltage value of transferring in actual load voltage value and the memory cell is consistent, continue next step, otherwise go to step n;
The processing unit of m.MCU control circuit compares with the duty ratio of being chosen the actual current value of steering indicating light load than current value, when actual current value greater than duty ratio during than current value, the MCU control circuit is exported the pulse control signal with turn sign flash rate f1 to output relay, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f1; When actual current value less than duty ratio during than current value, the MCU control circuit is exported the pulse control signal with king light indicating fault flash rate f2 to output relay, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f2;
The processing unit of n.MCU control circuit is according to the two groups of data that become corresponding relation about on-load voltage value and duty ratio than current value in close front and back, calculate the load faulty electric current computing value that is in two groups of data centres corresponding to this actual load voltage according to the linear algorithm mode, and the actual current value and the load faulty electric current computing value of steering indicating light load compared, when actual current value during greater than load faulty electric current computing value, the MCU control circuit is exported the pulse control signal with turn sign flash rate f1 to output relay, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f1; When actual current value during less than load faulty electric current computing value, the MCU control circuit is exported the pulse control signal with king light indicating fault flash rate f2 to output relay, carries out adhesive/open circuited action with the sound contact of control output relay according to flash rate f2.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100096339A CN100546847C (en) | 2007-09-30 | 2007-09-30 | A kind of flasher flash controller and control method thereof |
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| CNB2007100096339A CN100546847C (en) | 2007-09-30 | 2007-09-30 | A kind of flasher flash controller and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102109583B (en) * | 2009-12-25 | 2013-09-18 | 上海康耐司信号设备有限公司 | Dummy load system for integrated LED (Light Emitting Diode) steering lamp |
| CN102452352A (en) * | 2010-10-28 | 2012-05-16 | 比亚迪股份有限公司 | Detection and control circuit of LED (light-emitting diode) steering lamps and detection method thereof |
| CN102076145B (en) * | 2010-11-02 | 2014-03-26 | 深圳市航盛电子股份有限公司 | Accurate detection and control method for automobile LED steering lamp |
| CN102098856A (en) * | 2010-12-09 | 2011-06-15 | 河南天海科技有限公司 | Method for detecting falling of automotive steering lamp |
| CN102039840B (en) * | 2010-12-10 | 2013-05-22 | 芜湖罗比汽车照明***有限公司 | Automatic control system and control method of auto steering lamp |
| CN102390323B (en) * | 2011-08-09 | 2013-11-06 | 联合汽车电子有限公司 | Fault detection method for vehicle steering lamp |
| CN102915101B (en) * | 2012-09-29 | 2016-01-13 | 惠州Tcl移动通信有限公司 | A kind of device of intelligent monitoring mobile terminal download state |
| CN107071960B (en) * | 2017-01-17 | 2018-09-07 | 宁波光谷智能科技有限公司 | A kind of intelligent LED lamp |
| CN107846753B (en) * | 2017-11-24 | 2019-05-31 | 重庆和诚电器有限公司 | A kind of flashing relay of control LED turn signal flashing |
| CN108834278A (en) * | 2018-06-30 | 2018-11-16 | 北京东方英卡数字信息技术有限公司 | A kind of wireless street lamp micro-base station controller |
| CN109118910B (en) * | 2018-09-07 | 2020-12-15 | 华南理工大学广州学院 | Direct current direction detection device |
| CN111003639A (en) * | 2019-12-17 | 2020-04-14 | 三一汽车起重机械有限公司 | Integrated control system and engineering machinery |
| CN113543427B (en) * | 2021-06-16 | 2022-09-13 | 东风柳州汽车有限公司 | Flash unit |
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