CN105843717B - Interface detection protection circuit of lane controller - Google Patents
Interface detection protection circuit of lane controller Download PDFInfo
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- CN105843717B CN105843717B CN201610205780.2A CN201610205780A CN105843717B CN 105843717 B CN105843717 B CN 105843717B CN 201610205780 A CN201610205780 A CN 201610205780A CN 105843717 B CN105843717 B CN 105843717B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2294—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing by remote test
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
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Abstract
The invention provides a detection protection circuit for a lane controller interface, which comprises a driving circuit and a wiring terminal connected with the driving circuit, wherein the wiring terminal is connected with an external computer, the wiring terminal is connected with a test circuit, the test circuit and the external computer are connected with a selection circuit, the selection circuit is connected with a switch circuit, the switch circuit is connected with an industrial personal computer, the selection circuit selects the test circuit and/or the external computer to be connected with the switch circuit, and the selection circuit controls the on and off of the switch circuit.
Description
Technical Field
The invention belongs to the technical field of remote traffic monitoring, and particularly relates to a detection protection circuit for a lane controller interface.
Background
Currently, in the field of remote traffic monitoring, when abnormal conditions occur in the field computer operating peripheral, it is difficult for maintenance personnel to determine that the condition is "system" failure? Or "peripheral" failure? Of course, "peripheral failure" also includes wiring to the peripheral, etc.; because the testing device adopts the singlechip to operate, the danger of 'crash' exists inevitably, and once the danger occurs, the normal operation of the whole system is influenced due to local faults.
Therefore, there is a need for a lane controller interface detection protection circuit that can automatically implement the turning when an external device fails or a computer system crashes, so as to avoid the limitation of the system operation.
Disclosure of Invention
The invention provides a detection protection circuit for a lane controller interface, which solves the problem that the whole remote monitoring system is broken down due to local faults in the prior art.
The technical scheme of the invention is realized as follows: vehicle lane controller interface detects protection circuit, include drive circuit and the binding post of being connected with drive circuit, binding post connects external computer, binding post is connected with test circuit, test circuit and external computer are connected with selection circuit, selection circuit is connected with switch circuit, switch circuit is connected with the industrial computer, selection circuit selects test circuit and/or external computer to connect switch circuit, just selection circuit control switch circuit switch on and close.
As a preferred embodiment, the terminal is a twenty-five pin terminal: the first needle to the twenty-fifth needle.
In a preferred embodiment, the switch circuit includes a monostable gate circuit, the monostable gate circuit is connected to the circuit voltage through a first resistor, the monostable gate is connected to a sixth crystal oscillator, and the monostable gate circuit is connected to the circuit voltage through a twentieth capacitor, a twenty-fifth capacitor and a ground terminal.
As a preferred embodiment, the selection circuit comprises three data selectors: the first data selector is connected with the fourteenth pin to the seventeenth pin of the wiring terminal; the second data selector connects the eighteenth pin to the twenty-first pin of the connecting terminal; the third data selector connects the twenty-second pin to the twenty-fifth pin of the connection terminal.
As a preferred embodiment, the test circuit includes three photo-couplers: the first photoelectric coupler is connected with the first plug and the power supply voltage through a fifty-ninth resistor, a sixty-first resistor and a sixty-second resistor; the second photoelectric coupler is connected with a second plug and power supply voltage through a sixty-three resistor, a sixty-four resistor, a sixty-five resistor and a sixty-six resistor; the third photoelectric coupler is connected with a third plug and power supply voltage through a sixty-seventh resistor, a sixty-eighth resistor, a sixty-ninth resistor and a seventy resistor; the first photoelectric coupler is connected with the first data selector, the second photoelectric coupler is connected with the second data selector, and the third photoelectric coupler is connected with the third data selector.
In a preferred embodiment, the first photocoupler, the second photocoupler, and the third photocoupler are connected with thirteenth through twenty-fourth diodes through seventy-first through eighty-second resistors, respectively.
As a preferred embodiment, the driving circuit includes a three-terminal regulator and a power isolator, a first crystal oscillator is disposed between an input terminal of the three-terminal regulator and a ground terminal, a second crystal oscillator is disposed between an output terminal of the three-terminal regulator and the ground terminal, and an input terminal of the three-terminal regulator is connected to a power voltage; and a twenty-ninth capacitor and a fourth crystal oscillator are arranged between the output end of the power supply isolator and the grounding end, and the input end of the power supply isolator is connected with power supply voltage.
As a preferred embodiment, the driving circuit is connected with an indicating circuit, the indicating circuit comprises a first indicating diode connected between a power supply voltage and an analog ground, the anode of the first indicating diode is connected with the power supply voltage through a second resistor, and the cathode of the first indicating diode is connected with the analog ground; a second indicator diode is connected between the analog ground end and the negative voltage power supply, a third resistor is connected between the anode of the second indicator diode and the analog ground end, and the cathode of the second indicator diode is connected with the negative voltage power supply; and a third indicating diode is connected between the circuit voltage and the grounding end, the anode of the third indicating diode is connected with the circuit voltage through a fourth resistor, and the cathode of the third indicating diode is connected with the grounding end.
As a preferred embodiment, be provided with control circuit between switching circuit and the industrial computer, control circuit includes the fourth photoelectric coupler, the fourth photoelectric coupler is connected with four-pin connection socket's wherein third contact pin and fourth contact pin, four-pin connection socket's first contact pin passes through fourth indicator diode and fifth resistance connection circuit voltage, the positive pole of fourth indicator diode is connected to fifth resistance, four-pin connection socket's first contact pin still passes through fifth indicator diode and sixth resistance connection circuit voltage, the positive pole of fifth indicator diode is connected to sixth resistance, four-pin connection socket's second needle is connected the projecting pole of first triode, the eighth resistance is connected to the base of first triode, the ground is connected to the collecting electrode of first triode, an output earthing terminal of fourth photoelectric coupler, the other end passes through sixth indicator diode and seventh resistance connection circuit voltage, the positive pole of sixth indicator diode is connected to seventh resistance.
After the technical scheme is adopted, the invention has the beneficial effects that: the circuit is connected with the drive of the input and output interface of the computer, and supports the test drive of the local singlechip to the output circuit, when the field computer operates the peripheral equipment, the maintenance personnel can control the peripheral equipment through the local operation to determine the system fault or the peripheral equipment fault, and the computer system and the test system adopt an alternative logic circuit to be divided into two parts, when the test is needed, the test system selects the test part to close the computer system part, and after the test is finished, the control of the computer control system is recovered by using the switch circuit; once the crash situation occurs, the turning is automatically realized, the control of the computer system is switched to, and the system operation is not influenced no matter the 'crash' or 'no reset' of the test system, including 'no plug-in CPU', 'no programming of a CPU chip' and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block circuit diagram of the present invention;
fig. 2 is a schematic view of the terminal of fig. 1;
FIG. 3 is a circuit diagram of the switching circuit of FIG. 1;
FIG. 4 is a circuit diagram of the select circuit of FIG. 1;
FIG. 5 is a circuit diagram of the driving circuit of FIG. 1;
FIG. 6 is a circuit diagram of the indicating circuit of FIG. 1;
FIG. 7 is a circuit diagram of the test circuit of FIG. 1;
fig. 8 is a circuit diagram of the control circuit of fig. 1.
In the figure, J1-twenty-five pin wiring terminals; u1-power isolator; a U2-three terminal regulator; U3A-monostable gate circuit; u4-first data selector; u5-second data selector; u6-third data selector; u7-a first photoelectric coupler; u8-a second photoelectric coupler; u9-a third photoelectric coupler; u10-a fourth photocoupler; c1-a first crystal oscillator; c2-a second crystal oscillator; c3-third crystal oscillator; c4-fourth crystal oscillator; c29-a twenty-ninth capacitor; c30-thirtieth capacitance; c31-thirty-first capacitance; r1-a first resistor; r2-a second resistor; r3-a third resistor; r4-a fourth resistor; r5-a fifth resistor; r6-sixth resistor; r7-seventh resistor; r8-eighth resistance; r59 — fifty-ninth resistance; r60 — sixty-th resistance; r61-sixty-first resistance; r62-sixty-second resistance; r63-sixty-three resistors; r64 — sixty-fourth resistance; r65-sixty-five resistance; r66-sixty-sixth resistance; r67-sixty-seventh resistor; r68-sixty-eight resistance; r69 — sixty-ninth resistor; r70 — seventy resistance; D1-D12-thirteenth through twenty-fourth diodes; R71-R82-seventy-first to eighty-second resistors; LV1 — first indicator diode; LV2 — second indicator diode; LV3 — third indicator diode; LV4 — fourth indicator diode; LV 5-fifth indicator diode; LV 6-sixth indicator diode; q1-a first triode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-8, this lane controller interface detection protection circuit, its characterized in that includes drive circuit and the binding post of being connected with drive circuit, binding post connects the external computer, binding post is connected with test circuit, test circuit and external computer are connected with the selection circuit, the selection circuit is connected with switch circuit, switch circuit is connected with the industrial computer, selection circuit selection test circuit and/or external computer are connected switch circuit, just selection circuit control switch circuit's switching on and closing.
Specifically, binding post is twenty-five needle binding post J1: the first needle to the twenty-fifth needle.
The switch circuit comprises a monostable gate circuit U3A, the monostable gate circuit U3A accesses the circuit voltage through a first resistor R1, the monostable gate is connected with a sixth crystal oscillator, and the monostable gate circuit U3A passes through a twentieth capacitor, a twenty-fifth capacitor grounding end and the circuit voltage.
The selection circuit includes three data selectors: the first data selector U4 is connected with the fourteenth pin to the seventeenth pin of the wiring terminal, and the second data selector U5 is connected with the third data selector U6; the second data selector U5 connects the eighteenth pin to the twenty-first pin of the wiring terminal; the third data selector U6 connects the twenty-second pin to the twenty-fifth pin of the connection terminal.
The test circuit comprises three photoelectric couplers: the first photoelectric coupler U7 is connected with a first plug and a power supply voltage through a fifty-ninth resistor R59, a sixty resistor R60, a sixty-first resistor R61 and a sixty-second resistor R62; the second photoelectric coupler U8 is connected with a second plug and a power supply voltage through a sixteenth resistor R63, a sixtieth-fourth resistor R64, a sixtieth-fifth resistor R65 and a sixtieth-sixth resistor R66; the third photocoupler U9 is connected with a third plug and a power supply voltage through a sixty-seventh resistor R67, a sixty-eighth resistor R68, a sixty-ninth resistor R69 and a seventy resistor R70; the first photoelectric coupler U7 is connected with the first data selector U4, the second photoelectric coupler U8 is connected with the second data selector U5, and the third photoelectric coupler U9 is connected with the third data selector U6.
And the first photoelectric coupler U7, the second photoelectric coupler U8 and the third photoelectric coupler U9 are respectively connected with a thirteenth diode to a twenty-fourth diode through a seventeenth resistor to an eighty-second resistor.
The driving circuit comprises a three-terminal regulator U2 and a power supply isolator U1, a first crystal oscillator C1 is arranged between the input end of the three-terminal regulator U2 and the grounding end, a second crystal oscillator C2 is arranged between the output end of the three-terminal regulator U2 and the grounding end, and the input end of the three-terminal regulator U2 is connected with power supply voltage; a third crystal oscillator C3, a thirtieth capacitor C30 and a thirty-first capacitor C31 are arranged between the input end of the power isolator U1 and the grounding end, a twenty-ninth capacitor C29 and a fourth crystal oscillator C4 are arranged between the output end of the power isolator U1 and the grounding end, and the input end of the power isolator U1 is connected with a power supply voltage.
The driving circuit is connected with an indicating circuit, the indicating circuit comprises a first indicating diode LV1 connected between a power supply voltage and an analog ground end, the anode of the first indicating diode LV1 is connected with the power supply voltage through a second resistor R2, and the cathode of the first indicating diode LV1 is connected with the analog ground end; a second indication diode LV2 is connected between the analog ground end and the negative voltage power supply, a third resistor R3 is connected between the anode of the second indication diode LV2 and the analog ground end, and the cathode of the second indication diode is connected with the negative voltage power supply; and a third indicating diode LV3 is connected between the circuit voltage and the grounding end, the anode of the third indicating diode LV3 is connected with the circuit voltage through a fourth resistor R4, and the cathode of the third indicating diode is connected with the grounding end.
The control circuit is arranged between the switch circuit and the industrial personal computer and comprises a fourth photoelectric coupler U10, the fourth photoelectric coupler U10 is connected with a third contact pin and a fourth contact pin of a four-pin wiring socket, the first contact pin of the four-pin wiring socket is connected with circuit voltage through a fourth indicating diode LV4 and a fifth resistor R5, the fifth resistor R5 is connected with the anode of the fourth indicating diode LV4, the first contact pin of the four-pin wiring socket is also connected with circuit voltage through a fifth indicating diode LV5 and a sixth resistor R6, the sixth resistor R6 is connected with the anode of the fifth indicating diode, the second pin of the four-pin wiring socket is connected with the emitter of a first triode Q1, the base of the first triode Q1 is connected with an eighth resistor R8, the collector of the first triode Q1 is connected with the ground, one output end of the fourth photoelectric coupler U10 is grounded, the other end of the fourth photoelectric coupler U10 is connected with circuit voltage through the sixth indicating diode LV6 and a seventh resistor R7, and the seventh resistor R7 is connected with the anode of the sixth indicating diode LV 6.
The working principle of the interface detection protection circuit of the lane controller is as follows: the circuit is connected with the drive of the input and output interface of the computer and supports the test drive of the local singlechip on the output circuit, when the field computer operates the peripheral equipment, a maintenance worker can control the peripheral equipment through the local operation to determine whether the system fault or the peripheral equipment fault, the computer system and the test system adopt an alternative logic circuit to be divided into two parts, when the test is needed, the test system selects the test part, thereby closing the computer system part, and after the test is finished, the control of the computer control system is recovered by using the switch circuit; once the crash situation occurs, the overturning is automatically realized, the control is switched to the computer system, and f) no matter the test system is crashed or not reset, the system operation is not influenced by the conditions of ' no CPU plug-in connection ', no programming of a CPU chip ' and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A lane controller interface detection protection circuit is characterized by comprising a driving circuit and a wiring terminal connected with the driving circuit, wherein the wiring terminal is connected with an external computer, the wiring terminal is connected with a test circuit, the test circuit and the external computer are connected with a selection circuit, the selection circuit is connected with a switch circuit, the switch circuit is connected with an industrial personal computer, the selection circuit selects the test circuit and/or the external computer to be connected with the switch circuit, and the selection circuit controls the on and off of the switch circuit;
the switch circuit comprises a monostable gate circuit, the monostable gate circuit is connected with circuit voltage through a first resistor, the monostable gate is connected with a sixth crystal oscillator, and the monostable gate circuit is connected with circuit voltage through a twentieth capacitor, a twenty-fifth capacitor and a ground terminal;
the selection circuit includes three data selectors: the first data selector is connected with the fourteenth pin to the seventeenth pin of the wiring terminal; the second data selector connects the eighteenth pin to the twenty-first pin of the connecting terminal; the third data selector is connected with the twenty-second pin to the twenty-fifth pin of the wiring terminal;
the test circuit comprises three photoelectric couplers: the first photoelectric coupler is connected with the first plug and the power supply voltage through a fifty-ninth resistor, a sixty-first resistor and a sixty-second resistor; the second photoelectric coupler is connected with a second plug and power supply voltage through a sixty-three resistor, a sixty-four resistor, a sixty-five resistor and a sixty-six resistor; the third photoelectric coupler is connected with a third plug and power supply voltage through a sixty-seventh resistor, a sixty-eighth resistor, a sixty-ninth resistor and a seventy resistor; the first photoelectric coupler is connected with the first data selector, the second photoelectric coupler is connected with the second data selector, and the third photoelectric coupler is connected with the third data selector;
when abnormal conditions occur, the peripheral equipment is controlled through local operation to determine whether the system fault or the peripheral equipment fault, the computer system and the test system are divided into two parts by adopting an alternative logic circuit, during testing, the test part is selected by the test system, so that the computer system part is closed, after the test is finished, the control of the computer control system is recovered by utilizing a switch circuit, and if the crash condition occurs, the turnover is automatically realized, and the control is switched to the control of the computer system.
2. The lane controller interface detection protection circuit of claim 1, wherein the terminals are twenty-five pin terminals: the first needle to the twenty-fifth needle.
3. The interface detection protection circuit of the lane controller according to claim 2, wherein the first photocoupler, the second photocoupler, and the third photocoupler are respectively connected to a thirteenth diode to a twenty-fourth diode through a seventy-first resistor to an eighty-second resistor.
4. The interface detection protection circuit of the lane controller according to claim 1, wherein the driving circuit comprises a three-terminal regulator and a power isolator, a first crystal oscillator is arranged between an input terminal of the three-terminal regulator and a ground terminal, a second crystal oscillator is arranged between an output terminal of the three-terminal regulator and the ground terminal, and an input terminal of the three-terminal regulator is connected with a power supply voltage; and a twenty-ninth capacitor and a fourth crystal oscillator are arranged between the output end of the power supply isolator and the grounding end, and the input end of the power supply isolator is connected with power supply voltage.
5. The interface detection protection circuit of the lane controller according to claim 1, wherein the driving circuit is connected to an indication circuit, the indication circuit includes a first indication diode connected between a power supply voltage and an analog ground, an anode of the first indication diode is connected to the power supply voltage through a second resistor, and a cathode of the first indication diode is connected to the analog ground; a second indicator diode is connected between the analog ground end and the negative voltage power supply, a third resistor is connected between the anode of the second indicator diode and the analog ground end, and the cathode of the second indicator diode is connected with the negative voltage power supply; and a third indicating diode is connected between the circuit voltage and the grounding end, the anode of the third indicating diode is connected with the circuit voltage through a fourth resistor, and the cathode of the third indicating diode is connected with the grounding end.
6. The interface detection protection circuit of the lane controller according to claim 1, wherein a control circuit is disposed between the switching circuit and the industrial personal computer, the control circuit includes a fourth photoelectric coupler, the fourth photoelectric coupler is connected with a third contact pin and a fourth contact pin of a four-pin junction socket, the first contact pin of the four-pin junction socket is connected with circuit voltage through a fourth indicator diode and a fifth resistor, the fifth resistor is connected with an anode of the fourth indicator diode, the first contact pin of the four-pin junction socket is further connected with circuit voltage through the fifth indicator diode and a sixth resistor, the sixth resistor is connected with the anode of the fifth indicator diode, the second pin of the four-pin junction socket is connected with an emitter of the first triode, a base of the first triode is connected with an eighth resistor, a collector of the first triode is connected with a ground terminal, an output terminal of the fourth photoelectric coupler is grounded, the other end of the fourth photoelectric coupler is connected with circuit voltage through the sixth indicator diode and a seventh resistor, and the seventh resistor is connected with the anode of the sixth indicator diode.
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| CN201610205780.2A CN105843717B (en) | 2016-04-05 | 2016-04-05 | Interface detection protection circuit of lane controller |
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| CN201610205780.2A CN105843717B (en) | 2016-04-05 | 2016-04-05 | Interface detection protection circuit of lane controller |
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| CN105843717A (en) | 2016-08-10 |
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Inventor after: Feng Fengjiang Inventor after: Zhang Jialong Inventor after: Cheng Xinping Inventor after: Gao Haixiang Inventor after: Bian Yuchang Inventor after: Yang Chunshuo Inventor after: Gong Litian Inventor after: Xiao Feng Inventor after: Gao Juncheng Inventor before: Feng Fengjiang Inventor before: Zhang Jialong Inventor before: Cheng Zhiheng Inventor before: Wang Zhitian |
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Denomination of invention: A Lane Controller Interface Detection and Protection Circuit Effective date of registration: 20230731 Granted publication date: 20230228 Pledgee: Bank of Communications Co.,Ltd. Hebei Branch Pledgor: HEBEI SHANGYUAN INTELLIGENT TECHNOLOGY CO.,LTD. Registration number: Y2023980050543 |