CN108646126B - Line sequence detection device - Google Patents
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- CN108646126B CN108646126B CN201810338139.5A CN201810338139A CN108646126B CN 108646126 B CN108646126 B CN 108646126B CN 201810338139 A CN201810338139 A CN 201810338139A CN 108646126 B CN108646126 B CN 108646126B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The utility model provides a line preface detection device, including detecting the socket, analog multiplexer circuit, relay conversion passageway circuit, first threshold compares the isolation circuit, second threshold compares the isolation circuit, first reference voltage supply circuit, second reference voltage supply circuit, singlechip microcomputer electrical judgement circuit, infrared signal receiving circuit, display screen and 232 serial ports circuit and infrared remote controller, analog multiplexer circuit is connected with relay conversion passageway circuit electricity, relay conversion passageway circuit is connected with first threshold compares the isolation circuit electricity and second threshold compares the isolation circuit electricity respectively, first threshold compares the isolation circuit and second threshold compares the isolation circuit and is connected with first reference voltage supply circuit and second reference voltage supply circuit electricity, analog multiplexer circuit, relay conversion passageway circuit, infrared signal receiving circuit, first threshold compares the isolation circuit and second threshold compares the isolation circuit and all is connected with singlechip microcomputer electrical judgement circuit electricity. The invention has high production efficiency and is not easy to cause personal injury.
Description
Technical Field
The invention relates to a line sequence detection device.
Background
At present, a BMS (battery management system) is basically adopted for detecting the voltage of a single battery of a power battery pack, and a voltage acquisition line is required to be inspected for the line sequence before being connected into a BMS detection plate. Otherwise, the BMS detection plate is burnt out due to misconnection or misconnection. At present, the line sequence is mainly checked by a producer through visual inspection one by one according to an electrical drawing or the voltage of the connector end is measured one by using a universal meter according to the electrical drawing. The two methods have low efficiency in actual production, and have short circuit phenomenon in the process of measuring by a universal meter, so that the risk of personal injury is caused.
Disclosure of Invention
The invention aims to provide a line sequence detection device which is high in production efficiency and not easy to cause personal injury.
In order to achieve the above purpose, the invention adopts the following technical scheme: the line sequence detection device comprises a detection socket, an analog multiplexer circuit, a relay conversion channel circuit, a first threshold comparison isolation circuit, a second threshold comparison isolation circuit, a first reference voltage supply circuit, a second reference voltage supply circuit, a singlechip microcomputer electrical judgment circuit, an infrared signal receiving circuit, a display screen, a 232 serial port circuit and an infrared remote controller;
the detection socket is provided with a voltage input end and a voltage output end; the analog multiplexer circuit has a voltage input, a voltage output, and a signal input; the relay conversion channel circuit is provided with a voltage input end, a first voltage output end, a second voltage output end and a signal input end; the first threshold comparison isolation circuit is provided with a first voltage input end, a second voltage input end, a third voltage input end and a signal output end; the second threshold comparison isolation circuit is provided with a first voltage input end, a second voltage input end, a third voltage input end and a signal output end; the first reference voltage supply circuit is provided with a first voltage output end and a second voltage output end; the second reference voltage supply circuit has a first voltage output terminal and a second voltage output terminal; the singlechip microcomputer computer judgment circuit is provided with a first signal input end, a second signal input end, a third signal input end, a signal output end and a communication end; the infrared signal receiving circuit is provided with a wireless communication end and a signal output end; the display screen and 232 serial port circuit is provided with a communication end; the infrared remote controller is provided with a wireless communication end;
the voltage output end of the detection socket is electrically connected with the voltage input end of the analog multiplexer circuit; the voltage output end of the analog multiplexer circuit is electrically connected with the voltage input end of the relay conversion channel circuit, and the signal input end of the analog multiplexer circuit is electrically connected with the signal output end of the singlechip electronic control judgment circuit; the first voltage output end of the relay conversion channel circuit is electrically connected with the first voltage input end of the first threshold comparison isolation circuit, the second voltage output end of the relay conversion channel circuit is electrically connected with the first voltage input end of the second threshold comparison isolation circuit, and the signal input end of the relay conversion channel circuit is electrically connected with the signal output end of the singlechip electronic judgment circuit; the second voltage input end and the third voltage input end of the first threshold comparison isolation circuit are respectively and electrically connected with the first voltage output end and the second voltage output end of the first reference voltage supply circuit, and the signal output end of the first threshold comparison isolation circuit is electrically connected with the first signal input end of the singlechip microcomputer electric judgment circuit; the second voltage input end and the third voltage input end of the second threshold comparison isolation circuit are respectively and electrically connected with the first voltage output end and the second voltage output end of the second reference voltage supply circuit, and the signal output end of the second threshold comparison isolation circuit is electrically connected with the second signal input end of the singlechip microcomputer electrical judgment circuit through signals; the third signal input end of the singlechip microcomputer computer judging circuit is electrically connected with the signal output end of the infrared signal receiving circuit in a signal mode, and the communication end of the singlechip microcomputer computer judging circuit is electrically connected with the display screen and the communication end of the 232 serial port circuit in a two-way signal mode; the wireless communication end of the infrared remote controller is in wireless communication connection with the wireless communication end of the infrared signal receiving circuit.
Further, the detection socket comprises a plurality of sockets, and each socket is connected with a fuse in series.
Further, the voltage input end of the detection socket is P1, and the voltage output ends are Bat1 to Bat11 and Bat15;
the analog multiplexer circuit adopts a MUX36S16 chip scheme, pins S1-S16 are 16-path voltage input ends, pin D is a voltage output end, and pins EN, A0, A1, A2 and A3 are signal input ends for switching channels; the control signal of the singlechip microcomputer electronic judgment circuit is connected into 5 signal input ends for controlling channel switching after being isolated by an optical coupler.
Further, the analog multiplexer circuit employs the S1-S11 channels of two MUXs 36S16.
Further, the voltage input ends of the relay conversion channel circuit are V+ and GND1, the first voltage output end of the relay conversion channel circuit is a normally closed end V1 of the relay K1, the second voltage output end of the relay conversion channel circuit is a normally open end V2 of the relay K1, and switching between the normally open end V2 and the normally closed end V1 is controlled by a singlechip level judgment circuit; when the voltage of a single battery is detected, namely channels S1-S10 of two MUXs 36S16 are detected, the singlechip microcomputer electronic judgment circuit controls a relay K1 of the relay conversion channel circuit to be kept at a normally closed end; when the continuous five battery voltages are detected, i.e., the channels S11 of the two muxes 36S16 are detected, the singlechip microcomputer processor control circuit controls the relay K1 of the relay switching channel circuit to switch to the normal start.
Furthermore, the first threshold comparison isolation circuit adopts an LM393 scheme, pins 2 and 5 are a second voltage input end and a third voltage input end of the first threshold comparison isolation circuit, pins 3 and 6 are a first voltage input end of the first threshold comparison isolation circuit, 3.1V-3.4V is a voltage comparison range of the first threshold comparison isolation circuit, when the voltage of a V < 1+ > of the first voltage input end is in a range of 3.1V-3.4V, pins 1 and 7 are high level, signals are isolated by an optical coupler, and a signal output end Sig1 of the first threshold comparison isolation circuit outputs high level; when the voltage of V < 1+ > is not in the range of 3.1V-3.4V, the pins 1 and 7 are low level, signals are isolated by an optical coupler, and a signal output end Sig1 of the first threshold comparison isolation circuit outputs low level; r33 is a pull-up resistor arranged for guaranteeing the stability of the levels of pins 1 and 7;
the second threshold comparison isolation circuit adopts an LM393 scheme, pins 2 and 5 are a second voltage input end and a third voltage input end of the second threshold comparison isolation circuit, pins 3 and 6 are a first voltage input end of the second threshold comparison isolation circuit, 15.5V-17V is a voltage comparison range of the threshold comparison circuit 2, when the voltage of the first voltage input end V < 2+ > is in the range of 15.5V-17V, pins 1 and 7 are high levels, signals are isolated through an optical coupler, and a signal output end Sig2 of the second threshold comparison isolation circuit outputs high levels; when the voltage of V < 2+ > is not in the range of 15.5V-17V, the pins 1 and 7 are in low level, signals are isolated by an optical coupler, and a signal output end Sig2 of the second threshold comparison isolation circuit outputs low level; r42 is a pull-up resistor provided to ensure stability of the levels of pins 1 and 7.
Further, R27, R28, R29, R30, R31, R32 of the first reference voltage providing circuit are fixed values, so that two voltage values of 3.1V and 3.4V can be obtained; 3.1V and 3.4V are a first voltage output end and a second voltage output end of the first reference voltage supply circuit, and if two voltage values of 3.1V and 3.4V are required to be adjusted in the detection process, parameters of R27, R28, R29, R30, R31 and R32 are changed;
r36, R37, R38, R39, R40 and R41 of the second reference voltage supply circuit are all fixed values, and can obtain two voltage values of 15.5V and 17V; the 15.5V and 17V are the first voltage output end and the second voltage output end of the second reference voltage providing circuit, and if two voltage values of 15.5V and 17V need to be adjusted in the detection process, parameters of R36, R37, R38, R39, R40 and R41 are changed.
Further, the single-chip microcomputer model of the single-chip microcomputer computer judging circuit is MC9S12XET, pins PP0 and PP1 are a first signal input end and a second signal input end of the single-chip microcomputer computer judging circuit and are used for detecting the level of a signal output end Sig1 of the first threshold comparison isolating circuit and a signal output end Sig2 of the second threshold comparison isolating circuit, and the fact that the signal output end Sig1 of the first threshold comparison isolating circuit is high indicates that the voltage of a target wire harness is the voltage of a single battery, namely the wire harness is correct in line sequence; the low level indicates that the voltage of the target wire harness is not in the single battery voltage range, namely the wire harness is wrong in wire sequence; the signal output end Sig2 of the second threshold comparison isolation circuit is in a high level, which means that the voltage of the target wire harness is the voltage of 5 batteries, namely the wire harness wire sequence is correct; the low level indicates that the voltage of the target wire harness is not within the 5-cell voltage range, namely the wire harness is wrong in wire sequence; the pins PA 0-PA 4 of the first signal output end of the singlechip microcomputer electric judgment circuit are respectively and electrically connected with the signals C1-C5 of the signal input end of the analog multiplexer circuit, and are used for controlling the switching of channels of the two MUXs 36S 16; the PA5 pin of the first signal output end of the singlechip microcomputer control judgment circuit is electrically connected with the C6 signal of the signal input end of the relay conversion channel circuit and used for controlling the switching of the normally open end and the normally closed end of the relay K1 of the relay conversion channel circuit; the PT1 pin of the third signal input end of the singlechip microcomputer electronic judgment circuit is electrically connected with the INT0 signal of the signal output end of the infrared signal receiving circuit and is used for receiving a signal sent by the infrared receiving probe HS0038B of the infrared signal receiving circuit; PS0 and PS1 pins of the communication end of the singlechip microcomputer circuit judgment circuit are electrically connected with the display screen and the communication ends TX and RX of the 232 serial port circuit, and are used for communicating with the serial port chip MAX 3232E;
the model of an infrared signal receiving probe of the infrared signal receiving circuit is HS0038B, which is used for receiving a control signal sent by an infrared remote controller;
p2 is the display screen power and signal interface, and the detection data of singlechip level decision circuit is sent to P2 mouth through serial port chip MAX3232E, accomplishes the display of testing result on the display screen.
Furthermore, when the line sequence detection device is used, a plug with a battery voltage acquisition line is inserted into a P1 of a detection socket, if a detection signal sent by an infrared remote controller is received, two multiplexer channels S1 are simultaneously opened, after a proper delay is carried out, after the channel state is stable, a singlechip detects the level of a signal output end Sig1 of a first threshold comparison isolation circuit, if the level is high, data is sent to a display screen to display the correct wiring harness 1, otherwise, the wiring sequence is displayed incorrectly; the detection process of the channels S2-S10 is the same as that of the channel S1; when the channel S11 is detected, the relay K1 is switched to a normally open end, two MUX36S16 channels S11 are opened at the same time, after the channel state is stable through proper delay, the singlechip detects the level of the signal output end Sig2 of the second threshold comparison isolation circuit, if the level is high, data is sent to the display screen to display the correct line sequence, otherwise, the line sequence is displayed in error; after the detection of the channels S1-S11 is completed, all the channels are closed, the relay K1 is switched to be normally closed, and the detection of the next group of acquisition lines is waited.
The invention has the following positive effects: (1) The voltage output end of the detection socket is electrically connected with the voltage input end of the analog multiplexer circuit; the voltage output end of the analog multiplexer circuit is electrically connected with the voltage input end of the relay conversion channel circuit, and the signal input end of the analog multiplexer circuit is electrically connected with the signal output end of the singlechip microcomputer electrical judgment circuit; the first voltage output end of the relay conversion channel circuit is electrically connected with the first voltage input end of the first threshold comparison isolation circuit, the second voltage output end of the relay conversion channel circuit is electrically connected with the first voltage input end of the second threshold comparison isolation circuit, and the signal input end of the relay conversion channel circuit is electrically connected with the signal output end of the singlechip electronic judgment circuit; the second voltage input end and the third voltage input end of the first threshold comparison isolation circuit are respectively and electrically connected with the first voltage output end and the second voltage output end of the first reference voltage supply circuit, and the signal output end of the first threshold comparison isolation circuit is electrically connected with the first signal input end of the singlechip microcomputer electrical judgment circuit; the second voltage input end and the third voltage input end of the second threshold comparison isolation circuit are respectively and electrically connected with the first voltage output end and the second voltage output end of the second reference voltage supply circuit, and the signal output end of the second threshold comparison isolation circuit is electrically connected with the second signal input end of the singlechip microcomputer electrical judgment circuit; the third signal input end of the singlechip microcomputer computer judging circuit is electrically connected with the signal output end of the infrared signal receiving circuit in a signal mode, and the communication end of the singlechip microcomputer computer judging circuit is electrically connected with the display screen and the communication end of the 232 serial port circuit in a two-way signal mode; the wireless communication end of the infrared remote controller is in wireless communication connection with the wireless communication end of the infrared signal receiving circuit. Therefore, when the voltage of the single battery of the power battery pack of the new energy vehicle is required to be detected, only a plug with a battery voltage acquisition line is required to be inserted into the P1 of the detection socket, detection signals sent by the infrared remote controller are operated, two multiplexer channels S1 can be opened simultaneously, after the channel state is stable through proper delay, the single chip microcomputer detects the level of the signal output end Sig1 of the first threshold comparison isolation circuit, if the level is high, data is sent to the display screen to display the correct wiring harness 1, otherwise, the display line sequence is wrong. The detection process of the channels S2-S10 is the same as that of the channel S1. When the channel S11 is detected, the relay K1 is switched to the normally open end, the two MUX36S16 channels S11 are opened simultaneously, after the channel state is stable through proper delay, the singlechip detects the level of the signal output end Sig2 of the second threshold comparison isolation circuit, if the level is high, data is sent to the display screen to display the correct line sequence, and otherwise, the line sequence is displayed in error. Therefore, the line sequence detection device for checking the line sequence does not need to be visually checked one by a producer according to an electrical drawing, and is high in production efficiency and not easy to cause personal injury.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic diagram of a test socket of the present invention.
Fig. 3 is a schematic diagram of an analog multiplexer circuit.
Fig. 4 is a schematic diagram of a relay switching channel circuit.
Fig. 5 is a schematic diagram of the threshold comparison circuit 1.
Fig. 6 is a schematic diagram of the threshold comparison circuit 2.
Fig. 7 is a schematic diagram of a first reference voltage supply circuit.
Fig. 8 is a schematic diagram of a second reference voltage supply circuit.
Fig. 9 is a schematic diagram of a monolithic computer electrical determination circuit.
Fig. 10 is a schematic diagram of an infrared signal receiving circuit.
Fig. 11 is a schematic diagram of a display screen and 232 serial circuit.
Fig. 12 is a program operation flowchart of the present invention.
Detailed Description
Example 1
Referring to fig. 1 to 11, a line sequence detecting device includes a detecting socket, an analog multiplexer circuit, a relay conversion channel circuit, a first threshold comparison isolation circuit, a second threshold comparison isolation circuit, a first reference voltage providing circuit, a second reference voltage providing circuit, a singlechip electrical determination circuit, an infrared signal receiving circuit, a display screen and 232 serial port circuit, and an infrared remote controller;
the detection socket is provided with a voltage input end and a voltage output end; the analog multiplexer circuit has a voltage input, a voltage output, and a signal input; the relay conversion channel circuit is provided with a voltage input end, a first voltage output end, a second voltage output end and a signal input end; the first threshold comparison isolation circuit is provided with a first voltage input end, a second voltage input end, a third voltage input end and a signal output end; the second threshold comparison isolation circuit is provided with a first voltage input end, a second voltage input end, a third voltage input end and a signal output end; the first reference voltage supply circuit is provided with a first voltage output end and a second voltage output end; the second reference voltage supply circuit has a first voltage output terminal and a second voltage output terminal; the singlechip microcomputer computer judgment circuit is provided with a first signal input end, a second signal input end, a third signal input end, a signal output end and a communication end; the infrared signal receiving circuit is provided with a wireless communication end and a signal output end; the display screen and 232 serial port circuit is provided with a communication end; the infrared remote controller is provided with a wireless communication end;
the voltage output end of the detection socket is electrically connected with the voltage input end of the analog multiplexer circuit; the voltage output end of the analog multiplexer circuit is electrically connected with the voltage input end of the relay conversion channel circuit, and the signal input end of the analog multiplexer circuit is electrically connected with the signal output end of the singlechip electronic control judgment circuit; the first voltage output end of the relay conversion channel circuit is electrically connected with the first voltage input end of the first threshold comparison isolation circuit, the second voltage output end of the relay conversion channel circuit is electrically connected with the first voltage input end of the second threshold comparison isolation circuit, and the signal input end of the relay conversion channel circuit is electrically connected with the signal output end of the singlechip electronic judgment circuit; the second voltage input end and the third voltage input end of the first threshold comparison isolation circuit are respectively and electrically connected with the first voltage output end and the second voltage output end of the first reference voltage supply circuit, and the signal output end of the first threshold comparison isolation circuit is electrically connected with the first signal input end of the singlechip microcomputer electric judgment circuit; the second voltage input end and the third voltage input end of the second threshold comparison isolation circuit are respectively and electrically connected with the first voltage output end and the second voltage output end of the second reference voltage supply circuit, and the signal output end of the second threshold comparison isolation circuit is electrically connected with the second signal input end of the singlechip microcomputer electrical judgment circuit through signals; the third signal input end of the singlechip microcomputer computer judging circuit is electrically connected with the signal output end of the infrared signal receiving circuit in a signal mode, and the communication end of the singlechip microcomputer computer judging circuit is electrically connected with the display screen and the communication end of the 232 serial port circuit in a two-way signal mode; the wireless communication end of the infrared remote controller is in wireless communication connection with the wireless communication end of the infrared signal receiving circuit.
Referring to fig. 2, the detecting socket includes a plurality of sockets, each of which is connected in series with a fuse. This can be used for overcurrent and short-circuit protection. P1 in fig. 2 is a voltage input terminal, and Bat1 to Bat11, bat15 are voltage output terminals.
Referring to fig. 3, the analog multiplexer circuit adopts a MUX36S16 chip scheme, which is equivalent to a single-pole multi-throw switch, pins S1 to S16 are 16 voltage inputs, pin D is a voltage output, and pins EN, A0, A1, A2, A3 are signal inputs for switching channels. In the embodiment, S1-S11 channels of two MUXs 36S16 are used, and if more threads need to be detected, S12-S16 channels are used or MUXs 36S16 are added in pairs. The singlechip controls the two MUX36S16 channels to be switched simultaneously, so that the voltage of the single battery at the two voltage output ends V+ and GND1 is ensured.
Referring to fig. 4, the voltage input ends of the relay switching channel circuit are v+ and GND1, the first voltage output end of the relay switching channel circuit is a normally closed end V1 of the relay K1, the second voltage output end of the relay switching channel circuit is a normally open end V2 of the relay K1, and the switching between the normally open end V2 and the normally closed end V1 is controlled by the singlechip electronic circuit. When the voltage of a single battery is detected, namely channels S1-S10 of two MUXs 36S16 are detected, the singlechip microcomputer electronic judgment circuit controls a relay K1 of the relay conversion channel circuit to be kept at a normally closed end; when the continuous five battery voltages are detected, i.e., the channels S11 of the two muxes 36S16 are detected, the singlechip microcomputer processor control circuit controls the relay K1 of the relay switching channel circuit to switch to the normal start.
Referring to fig. 5, the first threshold comparison isolation circuit adopts an LM393 scheme, pins 2 and 5 are a second voltage input end and a third voltage input end of the first threshold comparison isolation circuit, pins 3 and 6 are a first voltage input end of the first threshold comparison isolation circuit, 3.1V-3.4V is a voltage comparison range of the first threshold comparison isolation circuit, when the voltage of the first voltage input end v1+ is within the range of 3.1V-3.4V, pins 1 and 7 are high level, signals are isolated by an optical coupler, and the signal output end Sig1 of the first threshold comparison isolation circuit outputs high level; when the voltage of the V < 1+ > is not in the range of 3.1V-3.4V, the pins 1 and 7 are low level, the signal is isolated by the optical coupler, and the signal output end Sig1 of the first threshold comparison isolation circuit outputs the low level. R33 is a pull-up resistor provided to ensure the stability of the pin 1 and 7 levels.
Referring to fig. 6, the second threshold comparison isolation circuit adopts an LM393 scheme, pins 2 and 5 are a second voltage input end and a third voltage input end of the second threshold comparison isolation circuit, pins 3 and 6 are a first voltage input end of the second threshold comparison isolation circuit, 15.5V-17V is a voltage comparison range of the threshold comparison circuit 2, when the voltage of the first voltage input end v2+ is in the range of 15.5V-17V, pins 1 and 7 are high level, signals are isolated by an optical coupler, and the signal output end Sig2 of the second threshold comparison isolation circuit outputs high level; when the voltage of V < 2+ > is not in the range of 15.5V-17V, the pins 1 and 7 are in low level, signals are isolated by the optical coupler, and the signal output end Sig2 of the second threshold comparison isolation circuit outputs low level. R42 is a pull-up resistor provided to ensure stability of the levels of pins 1 and 7.
Referring to fig. 7, R27, R28, R29, R30, R31, R32 of the first reference voltage supply circuit are fixed values, and two voltage values of 3.1V and 3.4V can be obtained. And 3.1V and 3.4V are a first voltage output end and a second voltage output end of the first reference voltage supply circuit, and if two voltage values of 3.1V and 3.4V are required to be adjusted in the detection process, parameters of R27, R28, R29, R30, R31 and R32 are changed.
Referring to fig. 8, R36, R37, R38, R39, R40, R41 of the second reference voltage supply circuit are fixed values, and two voltage values of 15.5V and 17V can be obtained. The 15.5V and 17V are the first voltage output end and the second voltage output end of the second reference voltage providing circuit, and if two voltage values of 15.5V and 17V need to be adjusted in the detection process, parameters of R36, R37, R38, R39, R40 and R41 are changed.
Referring to fig. 9, the single-chip microcomputer model of the single-chip microcomputer computer determining circuit is MC9S12XET, pins PP0 and PP1 are a first signal input end and a second signal input end of the single-chip microcomputer computer determining circuit, and are used for detecting the level of the signal output end Sig1 of the first threshold comparison isolating circuit and the level of the signal output end Sig2 of the second threshold comparison isolating circuit, and the signal output end Sig1 of the first threshold comparison isolating circuit is high level to indicate that the voltage of the target wire harness is the voltage of a single cell, namely the wire harness is correct in line sequence; a low level indicates that the voltage of the target harness is not within a single battery voltage range, i.e., the harness is misordered. The signal output end Sig2 of the second threshold comparison isolation circuit is in a high level, which means that the voltage of the target wire harness is the voltage of 5 batteries, namely the wire harness wire sequence is correct; a low level indicates that the voltage of the target harness is not within the 5-cell voltage range, i.e., the harness is misordered. The pins PA 0-PA 4 of the first signal output end of the singlechip microcomputer electric judgment circuit are respectively and electrically connected with the signals C1-C5 of the signal input end of the analog multiplexer circuit, and are used for controlling the switching of the channels of the two MUXs 36S16. The PA5 pin of the first signal output end of the singlechip microcomputer electric judgment circuit is electrically connected with the C6 signal of the signal input end of the relay conversion channel circuit and used for controlling the switching of the normally open end and the normally closed end of the relay K1 of the relay conversion channel circuit. The PT1 pin of the third signal input end of the singlechip microcomputer electric judgment circuit is electrically connected with the INT0 signal of the signal output end of the infrared signal receiving circuit, and is used for receiving a signal sent by the infrared receiving probe HS0038B of the infrared signal receiving circuit. The PS0 and PS1 pins of the communication end of the singlechip microcomputer electric judgment circuit are electrically connected with the communication ends TX and RX of the display screen and 232 serial port circuit, and are used for communicating with the serial port chip MAX 3232E.
Referring to fig. 10, an infrared signal receiving probe of the infrared signal receiving circuit is of a model HS0038B for receiving a control signal sent by an infrared remote controller.
Referring to fig. 11, P2 is a power supply and signal interface of the display screen, and the detection data of the single-chip microcomputer level judgment circuit is sent to the P2 port through the serial port chip MAX3232E, so as to complete the display of the detection result on the display screen.
The system is initialized after the power-on, the initialization process comprises the initialization of a singlechip phase-locked loop and the initialization of a timer, and the EN level of the pins of the two MUXs 36S16 is pulled down, namely, all channels are in a closed state. U13 optocoupler C6 high. When the invention is used, a plug with a battery voltage acquisition line is inserted into a P1 of a detection socket, if a detection signal sent by an infrared remote controller is received, two multiplexer channels S1 are simultaneously opened, after the channel state is stable by proper delay, a singlechip detects the level of a signal output end Sig1 of a first threshold comparison isolation circuit, if the level is high, data is sent to a display screen to display that the wiring harness 1 is correct, otherwise, the wiring harness is displayed in error. The detection process of the channels S2-S10 is the same as that of the channel S1. When the channel S11 is detected, the relay K1 is switched to the normally open end, the two MUX36S16 channels S11 are opened simultaneously, after the channel state is stable through proper delay, the singlechip detects the level of the signal output end Sig2 of the second threshold comparison isolation circuit, if the level is high, data is sent to the display screen to display the correct line sequence, and otherwise, the line sequence is displayed in error. After the detection of the channels S1-S11 is completed, all the channels are closed, the relay K1 is switched to be normally closed, and the detection of the next group of acquisition lines is waited. Therefore, the inspection line sequence does not need to be visually inspected one by a producer according to an electrical drawing. The line sequence detection device has high production efficiency and is not easy to cause personal injury.
The above examples and application examples are illustrative of specific embodiments of the present invention, but not limiting, and those skilled in the relevant art can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention, so that all equivalent technical solutions shall fall into the scope of the present invention.
Claims (9)
1. A line sequence detection device is characterized in that: the device comprises a detection socket, an analog multiplexer circuit, a relay conversion channel circuit, a first threshold comparison isolation circuit, a second threshold comparison isolation circuit, a first reference voltage supply circuit, a second reference voltage supply circuit, a singlechip microcomputer computer judgment circuit, an infrared signal receiving circuit, a display screen, a 232 serial port circuit and an infrared remote controller;
the detection socket is provided with a voltage input end and a voltage output end; the analog multiplexer circuit has a voltage input, a voltage output, and a signal input; the relay conversion channel circuit is provided with a voltage input end, a first voltage output end, a second voltage output end and a signal input end; the first threshold comparison isolation circuit is provided with a first voltage input end, a second voltage input end, a third voltage input end and a signal output end; the second threshold comparison isolation circuit is provided with a first voltage input end, a second voltage input end, a third voltage input end and a signal output end; the first reference voltage supply circuit is provided with a first voltage output end and a second voltage output end; the second reference voltage supply circuit has a first voltage output terminal and a second voltage output terminal; the singlechip microcomputer computer judgment circuit is provided with a first signal input end, a second signal input end, a third signal input end, a signal output end and a communication end; the infrared signal receiving circuit is provided with a wireless communication end and a signal output end; the display screen and 232 serial port circuit is provided with a communication end; the infrared remote controller is provided with a wireless communication end;
the voltage output end of the detection socket is electrically connected with the voltage input end of the analog multiplexer circuit; the voltage output end of the analog multiplexer circuit is electrically connected with the voltage input end of the relay conversion channel circuit, and the signal input end of the analog multiplexer circuit is electrically connected with the signal output end of the singlechip electronic control judgment circuit; the first voltage output end of the relay conversion channel circuit is electrically connected with the first voltage input end of the first threshold comparison isolation circuit, the second voltage output end of the relay conversion channel circuit is electrically connected with the first voltage input end of the second threshold comparison isolation circuit, and the signal input end of the relay conversion channel circuit is electrically connected with the signal output end of the singlechip electronic judgment circuit; the second voltage input end and the third voltage input end of the first threshold comparison isolation circuit are respectively and electrically connected with the first voltage output end and the second voltage output end of the first reference voltage supply circuit, and the signal output end of the first threshold comparison isolation circuit is electrically connected with the first signal input end of the singlechip microcomputer electric judgment circuit; the second voltage input end and the third voltage input end of the second threshold comparison isolation circuit are respectively and electrically connected with the first voltage output end and the second voltage output end of the second reference voltage supply circuit, and the signal output end of the second threshold comparison isolation circuit is electrically connected with the second signal input end of the singlechip microcomputer electrical judgment circuit through signals; the third signal input end of the singlechip microcomputer computer judging circuit is electrically connected with the signal output end of the infrared signal receiving circuit in a signal mode, and the communication end of the singlechip microcomputer computer judging circuit is electrically connected with the display screen and the communication end of the 232 serial port circuit in a two-way signal mode; the wireless communication end of the infrared remote controller is in wireless communication connection with the wireless communication end of the infrared signal receiving circuit.
2. The line sequence detection apparatus according to claim 1, wherein: the detection socket comprises a plurality of sockets, and each socket is connected with a fuse in series.
3. The line sequence detection apparatus according to claim 1, wherein: the voltage input end of the detection socket is P1, and the voltage output ends are Bat1 to Bat11 and Bat15;
the analog multiplexer circuit adopts a MUX36S16 chip scheme, pins S1-S16 are 16-path voltage input ends, pin D is a voltage output end, and pins EN, A0, A1, A2 and A3 are signal input ends for switching channels; the control signal of the singlechip microcomputer electronic judgment circuit is connected into 5 signal input ends for controlling channel switching after being isolated by an optical coupler.
4. A line sequence detection apparatus according to claim 3, wherein: the analog multiplexer circuit employs the S1-S11 channels of two MUXs 36S16.
5. The line sequence detection apparatus according to claim 4, wherein: the voltage input end of the relay conversion channel circuit is V+ and GND1, the first voltage output end of the relay conversion channel circuit is a normally closed end V1 of the relay K1, the second voltage output end of the relay conversion channel circuit is a normally open end V2 of the relay K1, and the switching between the normally open end V2 and the normally closed end V1 is controlled by a singlechip electronic control judgment circuit; when the voltage of a single battery is detected, namely channels S1-S10 of two MUXs 36S16 are detected, the singlechip microcomputer electronic judgment circuit controls a relay K1 of the relay conversion channel circuit to be kept at a normally closed end; when the continuous five battery voltages are detected, i.e., the channels S11 of the two muxes 36S16 are detected, the singlechip microcomputer processor control circuit controls the relay K1 of the relay switching channel circuit to switch to the normal start.
6. The line sequence detection apparatus according to claim 5, wherein: the first threshold comparison isolation circuit adopts an LM393 scheme, pins 2 and 5 are a second voltage input end and a third voltage input end of the first threshold comparison isolation circuit, pins 3 and 6 are the first voltage input end of the first threshold comparison isolation circuit, 3.1V-3.4V is the voltage comparison range of the first threshold comparison isolation circuit, when the voltage of a V < 1+ > of the first voltage input end is in the range of 3.1V-3.4V, pins 1 and 7 are high levels, signals are isolated through an optical coupler, and a signal output end Sig1 of the first threshold comparison isolation circuit outputs high levels; when the voltage of V < 1+ > is not in the range of 3.1V-3.4V, the pins 1 and 7 are low level, signals are isolated by an optical coupler, and a signal output end Sig1 of the first threshold comparison isolation circuit outputs low level; r33 is a pull-up resistor arranged for guaranteeing the stability of the levels of pins 1 and 7;
the second threshold comparison isolation circuit adopts an LM393 scheme, pins 2 and 5 are a second voltage input end and a third voltage input end of the second threshold comparison isolation circuit, pins 3 and 6 are a first voltage input end of the second threshold comparison isolation circuit, 15.5V-17V is a voltage comparison range of the threshold comparison circuit 2, when the voltage of the first voltage input end V < 2+ > is in the range of 15.5V-17V, pins 1 and 7 are high levels, signals are isolated through an optical coupler, and a signal output end Sig2 of the second threshold comparison isolation circuit outputs high levels; when the voltage of V < 2+ > is not in the range of 15.5V-17V, the pins 1 and 7 are in low level, signals are isolated by an optical coupler, and a signal output end Sig2 of the second threshold comparison isolation circuit outputs low level; r42 is a pull-up resistor provided to ensure stability of the levels of pins 1 and 7.
7. The line sequence detection apparatus according to claim 6, wherein: r27, R28, R29, R30, R31 and R32 of the first reference voltage supply circuit are all fixed values, and can obtain two voltage values of 3.1V and 3.4V; 3.1V and 3.4V are a first voltage output end and a second voltage output end of the first reference voltage supply circuit, and if two voltage values of 3.1V and 3.4V are required to be adjusted in the detection process, parameters of R27, R28, R29, R30, R31 and R32 are changed;
r36, R37, R38, R39, R40 and R41 of the second reference voltage supply circuit are all fixed values, and can obtain two voltage values of 15.5V and 17V; the 15.5V and 17V are the first voltage output end and the second voltage output end of the second reference voltage providing circuit, and if two voltage values of 15.5V and 17V need to be adjusted in the detection process, parameters of R36, R37, R38, R39, R40 and R41 are changed.
8. The line sequence detection apparatus according to claim 7, wherein: the single chip microcomputer model of the single chip microcomputer computer judging circuit is MC9S12XET, pins PP0 and PP1 are a first signal input end and a second signal input end of the single chip microcomputer computer judging circuit and are used for detecting the level of a signal output end Sig1 of the first threshold comparison isolating circuit and a signal output end Sig2 of the second threshold comparison isolating circuit, and the fact that the signal output end Sig1 of the first threshold comparison isolating circuit is high indicates that the voltage of a target wire harness is the voltage of a single cell, namely the wire harness is correct; the low level indicates that the voltage of the target wire harness is not in the single battery voltage range, namely the wire harness is wrong in wire sequence; the signal output end Sig2 of the second threshold comparison isolation circuit is in a high level, which means that the voltage of the target wire harness is the voltage of 5 batteries, namely the wire harness wire sequence is correct; the low level indicates that the voltage of the target wire harness is not within the 5-cell voltage range, namely the wire harness is wrong in wire sequence; the pins PA 0-PA 4 of the first signal output end of the singlechip microcomputer electric judgment circuit are respectively and electrically connected with the signals C1-C5 of the signal input end of the analog multiplexer circuit, and are used for controlling the switching of channels of the two MUXs 36S 16; the PA5 pin of the first signal output end of the singlechip microcomputer control judgment circuit is electrically connected with the C6 signal of the signal input end of the relay conversion channel circuit and used for controlling the switching of the normally open end and the normally closed end of the relay K1 of the relay conversion channel circuit; the PT1 pin of the third signal input end of the singlechip microcomputer electronic judgment circuit is electrically connected with the INT0 signal of the signal output end of the infrared signal receiving circuit and is used for receiving a signal sent by the infrared receiving probe HS0038B of the infrared signal receiving circuit; PS0 and PS1 pins of the communication end of the singlechip microcomputer circuit judgment circuit are electrically connected with the display screen and the communication ends TX and RX of the 232 serial port circuit, and are used for communicating with the serial port chip MAX 3232E;
the model of an infrared signal receiving probe of the infrared signal receiving circuit is HS0038B, which is used for receiving a control signal sent by an infrared remote controller;
p2 is the display screen power and signal interface, and the detection data of singlechip level decision circuit is sent to P2 mouth through serial port chip MAX3232E, accomplishes the display of testing result on the display screen.
9. The line sequence detection apparatus according to claim 8, wherein: when the line sequence detection device is used, a plug with a battery voltage acquisition line is inserted into a P1 of a detection socket, if a detection signal sent by an infrared remote controller is received, two multiplexer channels S1 are simultaneously opened, after a proper delay is carried out, the channel state is stable, a singlechip detects the level of a signal output end Sig1 of a first threshold comparison isolation circuit, if the level is high, data is sent to a display screen to display that the wiring harness 1 is correct, otherwise, the line sequence is displayed in error; the detection process of the channels S2-S10 is the same as that of the channel S1; when the channel S11 is detected, the relay K1 is switched to a normally open end, two MUX36S16 channels S11 are opened at the same time, after the channel state is stable through proper delay, the singlechip detects the level of the signal output end Sig2 of the second threshold comparison isolation circuit, if the level is high, data is sent to the display screen to display the correct line sequence, otherwise, the line sequence is displayed in error; after the detection of the channels S1-S11 is completed, all the channels are closed, the relay K1 is switched to be normally closed, and the detection of the next group of acquisition lines is waited.
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