CN112345971B - FFC wire rod detection circuitry and detection frock - Google Patents

FFC wire rod detection circuitry and detection frock Download PDF

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Publication number
CN112345971B
CN112345971B CN202011167727.0A CN202011167727A CN112345971B CN 112345971 B CN112345971 B CN 112345971B CN 202011167727 A CN202011167727 A CN 202011167727A CN 112345971 B CN112345971 B CN 112345971B
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unit
switch
normally closed
ffc wire
display unit
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CN112345971A (en
Inventor
孟祥威
王杰
羊学耀
魏茜
马晨阳
姚超萍
王旭亮
孙振江
黎丽
韩胜利
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Shenzhen Skyworth RGB Electronics Co Ltd
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Shenzhen Skyworth RGB Electronics Co Ltd
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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
    • G01R31/55—Testing for incorrect line connections
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
    • G01R1/206—Switches for connection of measuring instruments or electric motors to measuring loads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

The invention discloses an FFC wire detection circuit and a detection tool. The FFC wire detection circuit comprises a first switch unit, a second switch unit, a first protection unit, a second protection unit, a first display unit and a second display unit; the first end of the first switch unit is connected with the power supply unit, the second end of the first switch unit is connected with the first end of the first protection unit, the third end of the first switch unit is connected with the first end of the second protection unit, and the first switch unit is connected with the first metal shell of the FFC wire rod during detection; the first end of the second switch unit is connected with the power supply unit, the second end of the second switch unit is connected with the second end of the first protection unit and the first end of the second display unit respectively, and the third end of the second switch unit is connected with the second end of the second protection unit and the first end of the first display unit respectively and is connected with the second metal shell of the FFC wire rod during detection. Wherein, because the FFC wire rod inserts when normal or unusual, the circuit can automatic access different display element and show, avoids artifical the detection, has improved detection efficiency.

Description

FFC wire rod detection circuitry and detection frock
Technical Field
The invention relates to the technical field of televisions, in particular to an FFC wire detection circuit and a detection tool.
Background
Flexible Flat Cable (FFC) is one kind with PET insulating material and extremely thin tin-plated Flat copper line, through the novel data Cable that high-tech automation equipment production line pressfitting formed, has advantages such as softness, bending folding at will, thickness is thin, small, connect simple, dismantle convenient, the easy electromagnetic shield that solves.
Most of television products in the current market carry FFC wires, and when the FFC wires are not connected well or not connected in place, the complete machine is abnormal, for example, the television has abnormal pictures such as black screen, screen splash and the like. In order to realize the plug-in detection of the FFC wire, a production unit needs to arrange professional detection personnel for manual inspection, and the detection efficiency is low.
Disclosure of Invention
The invention mainly aims to provide an FFC wire detection circuit and detection tooling, and aims to solve the technical problem of low detection efficiency caused by manual FFC wire plugging detection in the prior art.
In order to achieve the above object, the present invention provides an FFC wire detection circuit, which includes a first switch unit, a second switch unit, a first protection unit, a second protection unit, a first display unit and a second display unit; wherein the content of the first and second substances,
the first end of the first switch unit is connected with a power supply unit, the second end of the first switch unit is connected with the first end of the first protection unit, the third end of the first switch unit is connected with the first end of the second protection unit, and the third end of the first switch unit is also used for being connected with a first metal shell of an FFC wire during FFC wire detection;
the first end of the second switch unit is connected with the power supply unit, the second end of the second switch unit is respectively connected with the second end of the first protection unit and the first end of the second display unit, the third end of the second switch unit is respectively connected with the second end of the second protection unit and the first end of the first display unit, and the third end of the second switch unit is also used for being connected with the second metal shell of the FFC wire during FFC wire detection;
the second end of the first display unit and the second end of the second display unit are grounded.
Preferably, the first switching unit includes a first normally closed switch; the normally open contact of first normally closed switch does the third end of first switch unit, the first end of the normally closed contact of first normally closed switch does the first end of first switch unit, the second end of the normally closed contact of first normally closed switch does the second end of first switch unit.
Preferably, the second switching unit includes a second normally-closed switch; the normally open contact of the second normally closed switch is the third end of the second switch unit, the first end of the normally closed contact of the second normally closed switch is the first end of the second switch unit, and the second end of the normally closed contact of the second normally closed switch is the second end of the second switch unit.
Preferably, the first protection unit includes a first diode; the anode of the first diode is connected with the second end of the normally closed contact of the first normally closed switch, and the cathode of the first diode is respectively connected with the second end of the normally closed contact of the second normally closed switch and the first end of the second display unit.
Preferably, the second protection unit includes a second diode; the anode of the second diode is connected with the normally open contact of the first normally closed switch, and the cathode of the second diode is respectively connected with the normally open contact of the second normally closed switch and the first end of the first display unit.
Preferably, the FFC wire detection circuit further includes the power supply unit, and the power supply unit includes a power supply and a main switch; the positive pole of the power supply is connected with the first end of the main switch, and the negative pole of the power supply is grounded; and the second end of the main switch is respectively connected with the first end of the normally closed contact of the first normally closed switch and the first end of the normally closed contact of the second normally closed switch.
Preferably, the first display unit includes a first color lamp; the first end of the first color lamp is the first end of the first display unit, and the second end of the first color lamp is grounded.
Preferably, the second display unit includes a second color lamp; the first end of the second color lamp is the first end of the second display unit, and the second end of the second color lamp is grounded.
Preferably, the FFC wire detection circuit further comprises a control unit and an alarm unit; the control unit is respectively connected with the first end of the second display unit and the alarm unit; wherein the content of the first and second substances,
the control unit is used for detecting the display state of the second display unit and sending a starting signal to the alarm unit when detecting that the display state is started;
and the alarm unit is used for giving an alarm prompt when receiving the starting signal.
The invention further provides an FFC wire detection tool which comprises the FFC wire detection circuit.
The FFC wire detection circuit comprises a first switch unit, a second switch unit, a first protection unit, a second protection unit, a first display unit and a second display unit; the first end of the first switch unit is connected with a power supply unit, the second end of the first switch unit is connected with the first end of the first protection unit, the third end of the first switch unit is connected with the first end of the second protection unit, and the third end of the first switch unit is also used for being connected with a first metal shell of an FFC wire during FFC wire detection; the first end of the second switch unit is connected with the power supply unit, the second end of the second switch unit is respectively connected with the second end of the first protection unit and the first end of the second display unit, the third end of the second switch unit is respectively connected with the second end of the second protection unit and the first end of the first display unit, and the third end of the second switch unit is also used for being connected with the second metal shell of the FFC wire during FFC wire detection; the second end of the first display unit and the second end of the second display unit are grounded. Wherein, because the FFC wire rod inserts when normal or unusual, the circuit can automatic access different display element and show, has avoided arranging the professional to carry out artifical the detection, has improved detection efficiency.
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 description of the embodiments or 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 structures shown in the drawings without creative efforts.
FIG. 1 is a functional block diagram of an embodiment of an FFC wire detection circuit of the present invention;
FIG. 2 is an alternative schematic diagram of the FFC wire detection circuit of FIG. 1;
fig. 3 is a schematic structural view of an embodiment of the FFC wire inspection tool of the present invention.
The reference numbers illustrate:
reference numerals Name (R) Reference numerals Name (R)
100 Power supply unit K0 Main switch
200 First switch unit K1 The first normally closed switch
300 Second switch unit K2 Second normally closed switch
400 A first protection unit D1 First diode
500 Second protection unit D2 Second diode
600 A first display unit L1 First color lamp
700 Second display unit L2 The second color lamp
VCC Power supply
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides an FFC wire detection circuit.
Referring to fig. 1, in an embodiment, the FFC wire detecting circuit includes a first switch unit 200, a second switch unit 300, a first protection unit 400, a second protection unit 500, a first display unit 600, and a second display unit 700; a first end of the first switch unit 200 is connected to the power supply unit 100, a second end of the first switch unit 200 is connected to a first end of the first protection unit 400, a third end of the first switch unit 200 is connected to a first end of the second protection unit 500, and the third end of the first switch unit 200 is further used for being connected to a first metal shell of an FFC wire during FFC wire detection; a first end of the second switch unit 300 is connected to the power supply unit 100, a second end of the second switch unit 300 is connected to a second end of the first protection unit 400 and a first end of the second display unit 700, respectively, a third end of the second switch unit 300 is connected to a second end of the second protection unit 500 and a first end of the first display unit 600, respectively, and the third end of the second switch unit 300 is further used for being connected to a second metal housing of the FFC wire during FFC wire detection; the second terminal of the first display unit 600 and the second terminal of the second display unit 700 are grounded.
It should be noted that, when the first metal housing and the second metal housing of the FFC wire are plugged normally, the first switch unit 200 disconnects the power supply unit 100 from the first protection unit 400, and connects the power supply unit 100 to the second protection unit 500 and the first display unit 600; the second switch unit 300 disconnects the power supply unit 100 from the second display unit 700, and at this time, the current passes through the first switch unit 200, the second protection unit 500 and the first display unit 600 to form a loop, and the first display unit 600 performs the first display.
When the first metal housing and the second metal housing of the FFC wire are not normally plugged, the first switch unit 200 switches on the connection between the power supply unit 100 and the first protection unit 400, and switches off the connection between the power supply unit 100 and the second protection unit 500 as well as the connection between the power supply unit 100 and the first display unit 600; the second switch unit 300 turns on the connection between the power supply unit 100 and the second display unit 700, and at this time, the current respectively passes through the second switch unit 300, the first switch unit 200, the first protection unit 400 and the second display unit 700 to form a loop, and the second display unit 700 performs the second display.
When the plug of the first metal shell of the FFC wire is normal and the plug of the second metal shell is abnormal, the first switch unit 200 disconnects the power supply unit 100 from the first protection unit 400, and connects the power supply unit 100 to the second protection unit 500 and the first display unit 600; the second switch unit 300 switches on the connection between the power supply unit 100 and the second display unit 700, the current passes through the first switch unit 200, the second protection unit 500 and the first display unit 600 to form a loop, and passes through the second switch unit 300 and the second display unit 700 to form a loop, and the first display unit 600 and the second display unit 700 both perform display.
When the first metal housing of the FFC wire is not plugged normally and the second metal housing is plugged normally, the first switch unit 200 switches on the connection between the power supply unit 100 and the first protection unit 400, and switches off the connection between the power supply unit 100 and the second protection unit 500 and the first display unit 600; the second switch unit 300 disconnects the power supply unit 100 from the second display unit 700, the current forms a loop through the first switch unit 200, the first protection unit 400 and the second display unit 700, and forms a loop through the second switch unit 300 and the first display unit 600, and the first display unit 600 and the second display unit 700 both display.
It should be understood that, because the FFC wire rod inserts when normal or unusual, the circuit can automatic access different display element and show, can confirm the condition that the FFC wire rod inserted through the display element's demonstration condition, has avoided arranging the professional to carry out artifical the detection, reduces the production manual work, has improved detection efficiency, also can in time discover simultaneously because of the FFC wire rod inserts unusual and the hidden quality danger of poor electron product quality that leads to of inserting.
Further, referring to fig. 1 and fig. 2, fig. 2 is a schematic diagram of an optional structure of the FFC wire detection circuit of fig. 1.
In this embodiment, the first switch unit 200 includes a first normally closed switch K1; the normally open contact of the first normally closed switch K1 is the third end of the first switch unit 200, the first end of the normally closed contact of the first normally closed switch K1 is the first end of the first switch unit 200, and the second end of the normally closed contact of the first normally closed switch K1 is the second end of the first switch unit 200.
The second switch unit 300 includes a second normally-closed switch K2; the normally open contact of the second normally closed switch K2 is the third end of the second switch unit 300, the first end of the normally closed contact of the second normally closed switch K2 is the first end of the second switch unit 300, and the second end of the normally closed contact of the second normally closed switch K2 is the second end of the second switch unit 300.
The first protection unit 400 includes a first diode D1; an anode of the first diode D1 is connected to a second end of the normally-closed contact of the first normally-closed switch K1, and a cathode of the first diode D1 is connected to a second end of the normally-closed contact of the second normally-closed switch K2 and a first end of the second display unit 700, respectively.
The second protection unit 500 includes a second diode D2; an anode of the second diode D2 is connected to the normally open contact of the first normally closed switch K1, and a cathode of the second diode D2 is connected to the normally open contact of the second normally closed switch K2 and the first end of the first display unit 600, respectively.
Further, the FFC wire detection circuit further includes the power supply unit 100, and the power supply unit 100 includes a power supply VCC and a main switch K0; the positive electrode of the power supply VCC is connected with the first end of the main switch K0, and the negative electrode of the power supply VCC is grounded; the second end of the main switch K0 is respectively connected with the first end of the normally closed contact of the first normally closed switch K1 and the first end of the normally closed contact of the second normally closed switch K2.
The first display unit 600 includes a first color lamp L1; a first end of the first color lamp L1 is a first end of the first display unit 600, and a second end of the first color lamp L1 is grounded.
The second display unit 700 includes a second color lamp L2; the first end of the second color lamp L2 is the first end of the second display unit 700, and the second end of the second color lamp L2 is grounded.
Taking the first color light L1 as a green light and the second color light L2 as a red light as an example, please refer to fig. 3 together, in a specific implementation, after an FFC wire is plugged into a T-CON board of an electronic device, a detection tool integrated with an FFC wire detection circuit in fig. 3 vertically corresponds to a plugging position of the FFC wire and the T-CON board, if the tool can completely correspond to the plugging position of the FFC wire and the T-CON board, the main switch K0 is in a closed state at this time, the first normally closed switch K1 is in an open state, the second normally closed switch K2 is in an open state, a current passes through 2 normally closed switches and the first color light L1 to form a loop, and the cathode of the second diode D2 is at a high level and is in a cut-off state, so as to prevent a direct short circuit between the normally closed switches. Namely, when the first metal shell and the second metal shell of the FFC wire are inserted into the T-CON plate normally, the green light starts to emit light.
If the FFC wire rod is inserted into the T-CON board, the detection tool cannot normally correspond to the FFC wire rod and the T-CON board, the main switch K0 is in a closed state, the first normally-closed switch K1 is in a normally-closed state, the second normally-closed switch K2 is in a normally-closed state, current passes through the 2 normally-closed switches and the second color lamp L2 to form a loop, the cathode of the first diode D1 is at a high level and is in a cut-off state, and direct short circuit between the normally-closed switches is prevented. Namely, when the first metal shell and the second metal shell of the FFC wire are abnormally inserted and connected with the T-CON plate, the red light starts to emit light.
If one end of the FFC wire is normally connected and the other end of the FFC wire is abnormally connected, the power main switch K0 is in a closed state, and current respectively passes through the 2 normally closed switches, the first color lamp L1 and the second color lamp L2 to form two loops. Namely, when any end of the first metal shell and the second metal shell of the FFC wire is abnormally connected with the T-CON plate, the red light and the green light start to emit light.
Further, the FFC wire detection circuit further includes a control unit (not shown) and an alarm unit (not shown); the control unit is respectively connected with the first end of the second display unit 700 and the alarm unit; the control unit is configured to detect a display state of the second display unit 700, and send an activation signal to the alarm unit when detecting that the display state is activated; and the alarm unit is used for giving an alarm prompt when receiving the starting signal.
It should be noted that, when the plugging at both ends or any end of the FFC wire is abnormal, the display state of the second display unit 700 is turned on, and therefore, when the control unit detects that the display state of the second display unit 700 is turned on, the control unit can control the alarm unit to give an alarm prompt to inform a producer that the FFC wire is abnormally plugged, so that the producer can timely perform the wire plugging adjustment, and the problems of abnormal product quality and increased maintenance cost in the subsequent production are avoided.
It should be understood that the alarm unit may be a buzzer, an alarm indicator, or the like, and the embodiment is not limited thereto.
This embodiment passes through power supply unit, first switch unit, second switch unit, first protection unit, second protection unit, first display element and second display element's specific design, adopts simple electronic components can realize the real-time supervision that FFC wire rod connects and insert, has avoided arranging the professional to carry out artifical the detection, has improved detection efficiency.
The invention also provides an FFC wire detection tool, which comprises the FFC wire detection circuit, wherein the circuit structure of the FFC wire detection circuit of the FFC wire detection tool can refer to the embodiment and is not repeated herein; it can be understood that, since the FFC wire detection tool of the present embodiment adopts the above-mentioned technical solution of the FFC wire detection circuit, the FFC wire detection tool has all the above-mentioned beneficial effects.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An FFC wire detection circuit is characterized by comprising a first switch unit, a second switch unit, a first protection unit, a second protection unit, a first display unit and a second display unit; wherein the content of the first and second substances,
the first end of the first switch unit is connected with a power supply unit, the second end of the first switch unit is connected with the first end of the first protection unit, the third end of the first switch unit is connected with the first end of the second protection unit, and the third end of the first switch unit is also used for being connected with a first metal shell of an FFC wire during FFC wire detection;
the first end of the second switch unit is connected with the power supply unit, the second end of the second switch unit is respectively connected with the second end of the first protection unit and the first end of the second display unit, the third end of the second switch unit is respectively connected with the second end of the second protection unit and the first end of the first display unit, and the third end of the second switch unit is also used for being connected with the second metal shell of the FFC wire during FFC wire detection;
the second end of the first display unit and the second end of the second display unit are grounded.
2. The FFC wire detection circuit of claim 1, wherein the first switching unit comprises a first normally closed switch; the normally open contact of first normally closed switch does the third end of first switch unit, the first end of the normally closed contact of first normally closed switch does the first end of first switch unit, the second end of the normally closed contact of first normally closed switch does the second end of first switch unit.
3. The FFC wire detection circuit of claim 2, wherein the second switching unit comprises a second normally closed switch; the normally open contact of the second normally closed switch is the third end of the second switch unit, the first end of the normally closed contact of the second normally closed switch is the first end of the second switch unit, and the second end of the normally closed contact of the second normally closed switch is the second end of the second switch unit.
4. The FFC wire detection circuit of claim 3, wherein the first protection unit comprises a first diode; the anode of the first diode is connected with the second end of the normally closed contact of the first normally closed switch, and the cathode of the first diode is respectively connected with the second end of the normally closed contact of the second normally closed switch and the first end of the second display unit.
5. The FFC wire detection circuit of claim 4, wherein the second protection unit comprises a second diode; the anode of the second diode is connected with the normally open contact of the first normally closed switch, and the cathode of the second diode is respectively connected with the normally open contact of the second normally closed switch and the first end of the first display unit.
6. The FFC wire detection circuit of claim 5, further comprising the power supply unit, the power supply unit comprising a power supply and a master switch; the positive pole of the power supply is connected with the first end of the main switch, and the negative pole of the power supply is grounded; and the second end of the main switch is respectively connected with the first end of the normally closed contact of the first normally closed switch and the first end of the normally closed contact of the second normally closed switch.
7. The FFC wire detection circuit of claim 6, wherein the first display unit comprises a first color light; the first end of the first color lamp is the first end of the first display unit, and the second end of the first color lamp is grounded.
8. The FFC wire detection circuit of claim 7, wherein the second display unit comprises a second color light; the first end of the second color lamp is the first end of the second display unit, and the second end of the second color lamp is grounded.
9. The FFC wire detection circuit of any one of claims 1 to 8, further comprising a control unit and an alarm unit; the control unit is respectively connected with the first end of the second display unit and the alarm unit; wherein the content of the first and second substances,
the control unit is used for detecting the display state of the second display unit and sending a starting signal to the alarm unit when detecting that the display state is started;
and the alarm unit is used for giving an alarm prompt when receiving the starting signal.
10. An FFC wire detection tool is characterized by comprising the FFC wire detection circuit of any one of claims 1-9.
CN202011167727.0A 2020-10-27 2020-10-27 FFC wire rod detection circuitry and detection frock Active CN112345971B (en)

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